.caesar-visual {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  margin: 14px 0;
}

.caesar-row {
  display: grid;
  grid-template-columns: 120px repeat(6, 44px);
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  min-width: 440px;
}

.caesar-label {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 700;
}

.caesar-row > div:not(.caesar-label) {
  text-align: center;
  font-weight: 700;
  font-size: 1.05rem;
}

.caesar-label-row {
  border-top: 2px solid #f2b6b6;
  border-bottom: 1px solid #e5e7eb;
  padding-top: 10px;
  padding-bottom: 10px;
}

.caesar-operator-row {
  color: var(--accent);
}

.caesar-result-row {
  border-top: 2px solid #f2b6b6;
  margin-top: 4px;
  padding-top: 10px;
}


.caesar-table {
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 1rem;
  width: auto;
  min-width: 460px;
}

.caesar-table th {
  text-align: left;
  padding: 6px 12px 6px 0;
  color: #f4f7ff;
  font-weight: 700;
  white-space: nowrap;
}

.caesar-table td {
  text-align: center;
  padding: 6px 10px;
  font-weight: 700;
  color: #f4f7ff;
}

.caesar-letters {
  border-top: 2px solid #f2b6b6;
  border-bottom: 1px solid var(--line);
}

.caesar-shift td {
  color: var(--accent);
}

.caesar-result {
  border-top: 2px solid #f2b6b6;
}

.caesar-example-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.caesar-example-main,
.caesar-example-wheel {
  min-width: 0;
}

.caesar-example-wheel .caesar-wheel-embed {
  background: rgba(10, 20, 38, 0.72);
  border: 1px solid rgba(132, 163, 214, 0.34);
  border-radius: 14px;
  padding: 16px;
}

.caesar-wheel-embed h4 {
  margin: 0 0 8px;
}

.caesar-wheel-embed p {
  margin-top: 0;
}

.caesar-wheel-embed .wheel-controls {
  margin: 12px 0;
}

/* ===========================
   Technische Bereichs-Hooks (Vorbereitung)
=========================== */

.tech-code-input,
.tech-code-view,
.tech-code-output,
.tech-status {
  font-family: var(--font-mono);
}

.tech-code-input,
.tech-code-view,
.tech-code-output {
  font-size: 0.92rem;
  line-height: 1.48;
}

.tech-status {
  letter-spacing: 0.01em;
}

/* Konsistente Dark-Inputs in den Tool-Sektionen (SQL/Java/Struktogramm) */
.tool-shell :is(.ui-input, .ui-textarea, .ui-select) {
  background: rgba(6, 15, 29, 0.95);
  color: #eef5ff;
  border-color: rgba(122, 150, 198, 0.3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 10px 18px rgba(2, 8, 20, 0.2);
}

.tool-shell :is(.ui-input, .ui-textarea, .ui-select)::placeholder {
  color: rgba(206, 222, 246, 0.72);
}

.tool-shell :is(.ui-input, .ui-textarea, .ui-select):focus-visible {
  outline: none;
  border-color: rgba(142, 173, 228, 0.78);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 0 0 3px rgba(74, 108, 176, 0.38), 0 12px 22px rgba(3, 10, 24, 0.26);
}

.tool-shell :is(.ui-input, .ui-textarea, .ui-select):disabled {
  background: rgba(8, 16, 30, 0.78);
  border-color: rgba(122, 150, 198, 0.22);
  color: rgba(203, 216, 238, 0.68);
}
/* ===========================
   Werkzeuge: Caesar-Chiffre (Split-Ziel: tools.css)
=========================== */

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 12px 0;
}

.accordion--tool-flat {
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.accordion--tool-flat .accordion-body {
  border-top: 0;
  padding: 0;
}

/* Legacy-Kontextregel: Übergang zu .ui-input/.ui-textarea */
:is(.block-tool, .tool-shell) textarea:not(.ui-textarea),
:is(.block-tool, .tool-shell) input[type="range"] {
  width: 100%;
}

:is(.block-tool, .tool-shell) textarea:not(.ui-textarea) {
  border: 1px solid rgba(122, 150, 198, 0.3);
  border-radius: 10px;
  padding: 10px;
  font: inherit;
  resize: vertical;
  min-height: 110px;
  color: #eef5ff;
  background: rgba(6, 15, 29, 0.95);
}

.shift-controls,
.wheel-controls {
  display: grid;
  grid-template-columns: auto auto minmax(160px, 1fr) auto;
  align-items: center;
  gap: 12px;
  margin: 14px 0;
}

.shift-controls .caesar-arrow-btn {
  --ui-btn-height: 36px;
  --ui-btn-padding-x: 0;
  --ui-btn-radius: 10px;
  width: 36px;
  min-width: 36px;
  min-height: var(--ui-btn-height);
  padding-inline: 0;
  font-family: var(--font-sans);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1;
}

.shift-controls .caesar-arrow-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  line-height: 1;
}

.tool-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 10px 0 4px;
}

.tool-actions.single {
  margin-top: 12px;
}

.caesar-tool-actions {
  align-items: center;
  gap: 8px;
}

.caesar-icon-button {
  --ui-btn-height: 38px;
  --ui-btn-padding-x: 0;
  position: relative;
  width: 38px;
  min-width: 38px;
  min-height: 38px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-color: rgba(122, 146, 190, 0.38);
  background: rgba(13, 24, 44, 0.52);
  color: #f4f8ff;
}

.caesar-icon-button:hover {
  background: rgba(22, 37, 66, 0.65);
  border-color: rgba(145, 177, 234, 0.42);
}

.caesar-icon-button svg {
  width: 17px;
  height: 17px;
  stroke: currentColor;
}

.caesar-icon-button:focus-visible {
  box-shadow: var(--ui-focus-ring);
}

.caesar-action-tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translate(-50%, 4px);
  border: 1px solid rgba(120, 153, 206, 0.45);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.2;
  color: #eff5ff;
  white-space: nowrap;
  background: rgba(4, 12, 24, 0.96);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.14s ease, transform 0.14s ease;
  z-index: 4;
}

.caesar-icon-button:hover .caesar-action-tooltip,
.caesar-icon-button:focus-visible .caesar-action-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.caesar-key-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  min-height: 38px;
  padding: 7px 10px;
  border: 1px solid rgba(122, 146, 190, 0.32);
  border-radius: 10px;
  background: rgba(9, 19, 36, 0.72);
  color: #d8e6ff;
  font-size: 0.8rem;
  letter-spacing: 0.01em;
}

.caesar-key-badge strong {
  color: #f7fbff;
  font-size: 0.92rem;
}

/* ===========================
   Werkzeuge: generische Struktur (layout-neutral)
=========================== */

.block-tool .tool-shell {
  margin-top: 0;
}

.tool-header,
.tool-controls,
.tool-workspace,
.tool-output {
  display: grid;
  gap: 10px;
}

.tool-output > h4 {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid rgba(111, 139, 190, 0.38);
  border-bottom-color: rgba(118, 146, 196, 0.3);
  border-radius: 12px 12px 0 0;
  background: linear-gradient(180deg, rgba(10, 23, 42, 0.72), rgba(7, 17, 33, 0.68));
  color: #eaf2ff;
  box-shadow: inset 0 1px 0 rgba(210, 225, 255, 0.06);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
}

/* Legacy-Kontextregel: Übergang zu .ui-button */
:is(.block-tool, .tool-shell) button:not(.ui-button),
.example-box button {
  background: #d1d5db;
  color: #1f2937;
  border: 1px solid #cbd5e1;
  border-radius: var(--ui-radius-control);
  transition: background-color var(--ui-motion-duration) var(--ui-motion-ease), border-color var(--ui-motion-duration) var(--ui-motion-ease), transform var(--ui-motion-press-duration) var(--ui-motion-ease), box-shadow var(--ui-motion-duration) var(--ui-motion-ease);
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
}

:is(.block-tool, .tool-shell) button:not(.ui-button):hover,
.example-box button:hover {
  background: #c4cbd4;
  transform: var(--ui-lift-hover);
}

:is(.block-tool, .tool-shell) button:not(.ui-button):active,
.example-box button:active {
  transform: scale(var(--ui-press-scale));
}

.freq-table {
  margin-top: 8px;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.freq-results {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-items: start;
  margin-top: 10px;
}

.freq-chart {
  min-height: 220px;
  background: rgba(6, 15, 29, 0.92);
  border: 1px solid rgba(111, 139, 190, 0.34);
  border-radius: 12px;
  padding: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.freq-chart-grid {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 8px;
  min-height: 196px;
}

.freq-y-axis {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
  font-size: 0.72rem;
  color: #c5d6f5;
  padding: 2px 0 20px;
}

.freq-bars-area {
  display: grid;
  grid-template-columns: repeat(26, minmax(10px, 1fr));
  align-items: end;
  gap: 3px;
  min-height: 196px;
  border-left: 1px solid rgba(122, 149, 198, 0.34);
  border-bottom: 1px solid rgba(122, 149, 198, 0.34);
  padding: 0 4px 2px;
  background-image:
    linear-gradient(to top, rgba(125, 150, 196, 0.2) 0, rgba(125, 150, 196, 0.2) 1px, transparent 1px),
    linear-gradient(to top, rgba(125, 150, 196, 0.16) 50%, rgba(125, 150, 196, 0.16) calc(50% + 1px), transparent calc(50% + 1px));
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

.freq-bar-wrap {
  display: grid;
  grid-template-rows: auto 1fr auto;
  justify-items: center;
  height: 100%;
}

.freq-bar-value {
  font-size: 0.6rem;
  color: #d8e5ff;
  line-height: 1.2;
  margin-bottom: 4px;
}

.freq-bar {
  width: 100%;
  min-height: 0;
  background: linear-gradient(180deg, #4a7ff0 0%, #8360f6 100%);
  border-radius: 4px 4px 0 0;
}

.freq-bar-wrap span {
  font-size: 0.64rem;
  color: #d4e2fb;
}

.caesar-wheel-box {
  margin-top: 6px;
}

.shift-controls input[type="range"] {
  appearance: none;
  height: 8px;
  border-radius: 999px;
  border: 1px solid rgba(122, 150, 198, 0.36);
  background: linear-gradient(90deg, rgba(135, 170, 235, 0.86) var(--range-progress, 12%), rgba(14, 24, 42, 0.96) var(--range-progress, 12%));
}

.shift-controls input[type="range"]::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: 999px;
  background: transparent;
}

.shift-controls input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -5px;
  border-radius: 50%;
  border: 1px solid rgba(226, 237, 255, 0.92);
  background: #f2f7ff;
  box-shadow: 0 1px 6px rgba(4, 10, 22, 0.46);
}

.shift-controls input[type="range"]::-moz-range-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(14, 24, 42, 0.96);
}

.shift-controls input[type="range"]::-moz-range-progress {
  height: 8px;
  border-radius: 999px;
  background: rgba(135, 170, 235, 0.86);
}

.shift-controls input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid rgba(226, 237, 255, 0.92);
  background: #f2f7ff;
  box-shadow: 0 1px 6px rgba(4, 10, 22, 0.46);
}

.shift-controls input[type="range"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(74, 108, 176, 0.38);
}

.caesar-wheel {
  width: min(100%, 420px);
  display: block;
  margin: 12px auto 4px;
}

.wheel-ring {
  fill: transparent;
  stroke: #d4deef;
  stroke-width: 1;
}

.wheel-center {
  fill: #eef4ff;
}

.wheel-text {
  font-family: Arial, Helvetica, sans-serif;
  user-select: none;
}

.outer-text {
  font-size: 18px;
  fill: #eef4ff;
}

.inner-text {
  font-size: 16px;
  fill: #9fbfff;
}

@media (max-width: 900px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .caesar-example-layout {
    grid-template-columns: 1fr;
  }

  .shift-controls,
  .wheel-controls {
    grid-template-columns: auto 1fr;
  }

  .freq-results {
    grid-template-columns: 1fr;
  }

  .tool-actions {
    gap: 10px;
  }

  .tool-actions .ui-button,
  .tool-actions button {
    min-height: 42px;
    padding: 9px 12px;
  }

  .shift-controls label,
  .wheel-controls label,
  .shift-controls input[type="range"],
  .wheel-controls input[type="range"] {
    grid-column: 1 / -1;
  }
}

/* ===========================

   Werkzeuge: Java-Code-Runner (tools.css, legacy-spezifisch)
=========================== */

.java-runner-card {
  display: grid;
  gap: 10px;
}

.tool-shell {
  margin-bottom: 0;
  margin-top: 10px;
  display: grid;
  gap: 10px;
}

.tool-shell > h4 {
  margin: 0;
}

.caesar-tool-shell {
  display: grid;
  gap: 10px;
}

.caesar-tool-section {
  display: grid;
  gap: 10px;
}

.java-code-field,
.java-stdin-field {
  width: 100%;
  resize: vertical;
  min-height: 120px;
}

.java-code-field {
  font-family: Consolas, Monaco, monospace;
  line-height: 1.45;
  min-height: 220px;
}

.java-output-wrap {
  margin-top: 4px;
}

.java-output {
  margin: 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  white-space: pre;
  word-break: normal;
}

/* ===========================
   Werkzeuge: SQL-Abfragen (tools.css, legacy-spezifisch)
=========================== */

.sql-runner-card {
  display: grid;
  gap: 10px;
}

.sql-select,
.sql-query-field {
  width: 100%;
  max-width: 100%;
}

.sql-query-field {
  min-height: 220px;
  resize: vertical;
  line-height: 1.45;
}

/* ===========================
   Gemeinsamer Code-Editor (Java / SQL / PHP)
=========================== */

.code-editor {
  --code-editor-font-family: Consolas, Monaco, 'Courier New', monospace;
  --code-editor-font-size: 0.96rem;
  --code-editor-line-height: 1.55;
  --code-editor-block-padding: 12px;
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  border: 1px solid rgba(118, 146, 196, 0.42);
  border-radius: 14px;
  background: transparent;
  box-shadow: inset 0 0 0 1px rgba(156, 182, 228, 0.08), 0 8px 24px rgba(2, 8, 20, 0.2);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.code-editor::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(10, 17, 32, 0.96), rgba(8, 14, 26, 0.98));
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.code-editor:hover {
  border-color: rgba(132, 162, 214, 0.52);
  box-shadow: inset 0 0 0 1px rgba(169, 194, 236, 0.1), 0 10px 28px rgba(2, 8, 20, 0.24);
}

.code-editor:focus-within {
  border-color: rgba(144, 174, 227, 0.66);
  box-shadow:
    inset 0 0 0 1px rgba(178, 201, 241, 0.14),
    0 0 0 3px rgba(74, 108, 176, 0.24),
    0 12px 30px rgba(2, 8, 20, 0.26);
}

.code-editor__gutter {
  position: relative;
  z-index: 1;
  border-right: 1px solid rgba(128, 154, 205, 0.35);
  background: rgba(8, 14, 26, 0.86);
  color: rgba(198, 214, 245, 0.92);
  padding: var(--code-editor-block-padding) 10px;
  min-width: 52px;
  text-align: right;
  user-select: none;
}

.code-editor__gutter-inner {
  display: grid;
  gap: 0;
  font-family: var(--code-editor-font-family);
  font-size: var(--code-editor-font-size);
  line-height: var(--code-editor-line-height);
  transform: translateY(0);
  will-change: transform;
}

.code-editor__gutter-inner > span {
  display: block;
  line-height: inherit;
}

.code-editor__surface {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 220px;
}

.code-editor__preview,
.code-editor__input {
  grid-area: 1 / 1;
  margin: 0;
  padding: var(--code-editor-block-padding) 14px;
  border: 0;
  border-radius: 0;
  font-family: var(--code-editor-font-family);
  font-size: var(--code-editor-font-size);
  line-height: var(--code-editor-line-height);
  tab-size: 2;
  white-space: pre;
  overflow: auto;
}

.code-editor__preview {
  position: relative;
  z-index: 2;
  color: #eaf2ff;
  pointer-events: none;
  user-select: none;
  background: transparent;
  will-change: transform;
  transform: translate(0, 0);
  text-shadow: 0 0 0 rgba(234, 242, 255, 0);
}

.code-editor__input {
  position: relative;
  z-index: 3;
  resize: vertical;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  color: transparent;
  caret-color: #eef4ff;
  outline: none;
  -webkit-text-fill-color: transparent;
  filter: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

.code-editor__input::selection {
  background: rgba(105, 145, 219, 0.35);
  color: transparent;
}

.code-editor__input:focus-visible {
  box-shadow: inset 0 0 0 1px rgba(124, 156, 220, 0.55), inset 0 0 0 2px rgba(24, 41, 74, 0.7);
}

.code-editor__token--keyword { color: #7ec3ff; font-weight: 700; }
.code-editor__token--type { color: #73d0ff; font-weight: 700; }
.code-editor__token--class-name { color: #9ac7ff; }
.code-editor__token--method { color: #ffd38a; }
.code-editor__token--string { color: #b7e88d; }
.code-editor__token--number { color: #ffc987; }
.code-editor__token--literal { color: #ffbe8b; font-weight: 600; }
.code-editor__token--comment { color: #8fa4c7; font-style: italic; }
.code-editor__token--operator { color: #e5eeff; }
.code-editor__token--annotation,
.code-editor__token--tag { color: #ebb8ff; }
.code-editor__token--variable { color: #ffde98; }

.code-editor :is(.code-editor__input, .ui-codefield, .sql-query-field, .java-code-field, .java-stdin-field) {
  position: relative;
  z-index: 3;
  filter: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}


.sql-schema-accordion {
  margin: 6px 0;
}

.sql-schema-accordion summary h5 {
  margin: 0;
  font-size: 1rem;
}

.sql-schema-panel {
  display: grid;
  gap: 12px;
  border: 1px solid rgba(112, 140, 191, 0.42);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(8, 18, 34, 0.74), rgba(6, 15, 30, 0.8));
  box-shadow: inset 0 1px 0 rgba(207, 223, 252, 0.06);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  padding: 12px;
}

.sql-schema-message {
  margin: 0;
}

.sql-er-canvas {
  overflow: auto;
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 0;
}

.sql-er-svg {
  min-width: 1000px;
  height: auto;
}

.sql-er-image-figure {
  margin: 0;
}

.sql-er-image {
  display: block;
  width: min(100%, 1180px);
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}

.sql-er-entity rect {
  fill: rgba(246, 250, 255, 0.96);
  stroke: #d6e6ff;
  stroke-width: 1.4;
  rx: 2;
  ry: 2;
}

.sql-er-entity--weak rect {
  stroke-dasharray: 5 4;
}

.sql-er-entity-title {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  fill: #0f172a;
}

.sql-er-attribute-oval {
  fill: rgba(246, 251, 255, 0.97);
  stroke: #d3e2ff;
  stroke-width: 1.3;
}

.sql-er-attribute-oval--inner {
  fill: none;
}

.sql-er-attribute-label {
  font-family: var(--font-sans);
  font-size: 12px;
  fill: #0f172a;
}

.sql-er-attribute-label--primary {
  text-decoration: underline;
  font-weight: 700;
}

.sql-er-diamond {
  fill: rgba(247, 251, 255, 0.98);
  stroke: #d4e4ff;
  stroke-width: 1.3;
}

.sql-er-diamond--isa {
  fill: rgba(231, 242, 255, 0.98);
}

.sql-er-link {
  stroke: rgba(176, 205, 255, 0.9);
  stroke-width: 1.6;
  fill: none;
}

.sql-er-link--arrow {
  marker-end: url(#sqlErArrow);
}

.sql-er-arrow-marker {
  fill: rgba(176, 205, 255, 0.9);
}

.sql-er-link--attribute {
  stroke-width: 1.2;
  stroke: rgba(188, 213, 255, 0.82);
}

.sql-er-link-label {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  fill: #17253f;
}

.sql-er-cardinality {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  fill: #d9e7ff;
}

.sql-er-optionality {
  font-family: var(--font-sans);
  font-size: 12px;
  fill: #c4d8ff;
}

.sql-relational-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.sql-relational-plain {
  display: grid;
  gap: 8px;
}

.sql-relational-plain__title {
  margin: 0;
  font-weight: 600;
  color: #d9e7ff;
}

.sql-relational-plain__block {
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  color: #e8f1ff;
  font-family: var(--font-mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.sql-relational-item {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid rgba(117, 146, 198, 0.44);
  border-radius: 10px;
  background: rgba(10, 21, 40, 0.72);
  color: #e8f1ff;
  box-shadow: inset 0 1px 0 rgba(211, 225, 251, 0.04);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  font-family: var(--font-mono);
  overflow-x: auto;
}

.sql-key-marker {
  font-weight: 700;
}

.sql-output-wrap {
  margin-top: 4px;
}

.sql-output {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.sql-message-muted {
  margin: 0;
  color: #c4d6f6;
  overflow-wrap: anywhere;
}

.sql-message-error {
  margin: 0;
  color: #ff9ea5;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.sql-table-wrap {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.sql-result-table {
  position: relative;
}

.sql-result-table th {
  position: sticky;
  top: 0;
  z-index: 1;
}

.sql-null {
  color: #b2c6ea;
  font-style: italic;
}

.sql-links-box p {
  margin: 0 0 8px;
}

.sql-links-box p:last-child {
  margin-bottom: 0;
}

.sql-exercise-shell {
  width: min(100%, var(--content-reading-max));
  margin-inline: auto;
  display: grid;
  gap: var(--space-3);
}

.sql-exercise-shell > :is(.subaccordion, .content-block, .box) {
  width: 100%;
  max-width: 100%;
  margin-inline: 0;
  box-sizing: border-box;
}


.sql-exercise-shell + .sql-exercise-model-box,
.sql-exercise-shell + .sql-exercise-model-box + .sql-exercise-model-box,
.sql-exercise-shell + .sql-exercise-model-box + .sql-exercise-model-box + .sql-exercise-sections {
  width: min(100%, var(--content-reading-max));
  margin-inline: auto;
}

.sql-exercise-shell + .sql-exercise-model-box {
  margin-top: var(--space-3);
}

.sql-exercise-shell + .sql-exercise-model-box + .sql-exercise-model-box,
.sql-exercise-shell + .sql-exercise-model-box + .sql-exercise-model-box + .sql-exercise-sections {
  margin-top: var(--space-3);
}

@media (max-width: 1080px) {
  .sql-exercise-shell,
  .sql-exercise-shell + .sql-exercise-model-box,
  .sql-exercise-shell + .sql-exercise-model-box + .sql-exercise-model-box,
  .sql-exercise-shell + .sql-exercise-model-box + .sql-exercise-model-box + .sql-exercise-sections {
    width: 100%;
    max-width: 100%;
    margin-inline: 0;
  }
}

.sql-exercise-intro-box h4 {
  margin: 0 0 8px;
}

.sql-session-menu {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 10px;
  margin: 2px 0 12px;
  padding: 8px 10px;
  border: 1px solid rgba(125, 156, 214, 0.28);
  border-radius: 12px;
  background: rgba(11, 22, 42, 0.36);
}

.sql-session-menu__status {
  font-size: 0.84rem;
  color: #bcd1f4;
}

.sql-session-menu__status.is-active {
  color: #d8e7ff;
}

.sql-session-menu__actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sql-session-menu__actions .ui-button.ui-button--sm {
  min-height: 30px;
  padding-inline: 10px;
}

.sql-exercise-intro-box ul {
  margin: 8px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.sql-exercise-display-title {
  margin: 0;
  font-weight: 700;
  color: #e8f2ff;
}

.sql-exercise-model-box {
  width: 100%;
  margin: 0;
  display: grid;
  gap: 10px;
  border: 0;
  border-radius: 0;
  overflow: visible;
  background: transparent;
  isolation: isolate;
}

.sql-exercise-model-box > .sql-exercise-section__head {
  width: 100%;
}

.sql-exercise-model-box > .sql-exercise-section__head::after {
  display: none;
}

.sql-exercise-model-box[open] > .sql-exercise-section__head .sql-exercise-section__toggle::after {
  display: none;
}

.sql-exercise-model-heading {
  gap: 4px;
}

.sql-exercise-model-body {
  width: 100%;
  margin: 0;
}

.sql-exercise-model-select {
  width: 100%;
  max-width: 100%;
}

.sql-exercise-er-box,
.sql-exercise-relational-box {
  display: grid;
  gap: 10px;
}

.sql-exercise-er-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 10px;
}

.sql-exercise-sections {
  display: grid;
  gap: var(--space-3);
}

.sql-exercise-section {
  width: 100%;
  margin: 0;
  display: grid;
  gap: 10px;
}

.sql-exercise-section__head {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(122, 150, 198, 0.26);
  min-height: 72px;
  padding: 16px 18px;
  background: var(--glass-box-bg);
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: left;
  cursor: pointer;
  transition: border-color 140ms ease;
}

.sql-exercise-section__head:hover {
  border-color: rgba(147, 177, 229, 0.44);
}

.sql-exercise-section__head:focus-visible {
  outline: none;
  border-color: rgba(155, 186, 238, 0.64);
  box-shadow: 0 0 0 3px rgba(79, 118, 188, 0.32);
}

.sql-exercise-section__head-main {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.sql-exercise-section__toggle {
  width: 20px;
  height: 20px;
  min-width: 20px;
  position: relative;
  opacity: 0.9;
}

.sql-exercise-section__toggle::before,
.sql-exercise-section__toggle::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 14px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  transform: translate(-50%, -50%);
}

.sql-exercise-section__toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.sql-exercise-section__head[aria-expanded="true"] .sql-exercise-section__toggle::after {
  display: none;
}

.sql-exercise-section__panel {
  width: 100%;
  border: 1px solid rgba(122, 150, 198, 0.2);
  border-radius: 16px;
  padding: 18px 18px 20px;
  background: var(--glass-box-bg);
  box-sizing: border-box;
  display: grid;
  gap: 12px;
}

.sql-exercise-section__icon {
  width: var(--icon-badge-size, 52px);
  min-width: var(--icon-badge-size, 52px);
  height: var(--icon-badge-size, 52px);
  color: #f4f8ff;
}

.sql-exercise-section__icon .subbadge__icon {
  width: var(--icon-core-size, 40px);
  height: var(--icon-core-size, 40px);
  display: block;
}

.sql-exercise-section__heading {
  min-width: 0;
  display: grid;
  gap: 3px;
  align-content: center;
}

.sql-exercise-section__heading strong {
  display: block;
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: 0.005em;
  color: #f2f7ff;
}

.sql-exercise-section__heading span {
  display: block;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.35;
  font-weight: 500;
  color: #cadcf9;
}

.sql-exercise-section__panel[hidden] {
  display: none;
}

.sql-exercise-section__intro {
  margin-top: 0;
}

.sql-exercise-task-grid {
  display: grid;
  gap: 12px;
}

.exercise-item.sql-exercise-task {
  border: 1px solid rgba(124, 155, 213, 0.3);
  border-radius: 12px;
  padding: 14px 14px 12px;
  background: rgba(9, 21, 40, 0.38);
  box-shadow: inset 0 1px 0 rgba(192, 214, 247, 0.08);
  display: grid;
  gap: 10px;
  margin: 0;
}

.exercise-label {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #eef4ff;
}

.exercise-meta {
  margin: -2px 0 2px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #c7dafb;
  opacity: 0.86;
}

.exercise-divider {
  display: none;
}

.sql-exercise-task__prompt {
  margin: 0;
}

.exercise-hints {
  border: 1px solid rgba(124, 155, 213, 0.42);
  border-radius: 10px;
  background: rgba(12, 24, 46, 0.55);
  padding: 10px 12px;
  display: grid;
  gap: 10px;
}

.exercise-hints.is-visible {
  margin-top: 2px;
}

.exercise-hints .hint-item[hidden] {
  display: none !important;
}

.hint-item strong {
  display: block;
  margin-bottom: 4px;
  color: #eaf2ff;
}

.hint-item p {
  margin: 0;
}

.hint-links {
  margin-top: 6px;
  font-size: 0.86rem;
  color: #c9dbfb;
}

.hint-links a {
  color: #d6e5ff;
}

.hint-links a:hover,
.hint-links a:focus-visible {
  color: #f0f6ff;
}

.sql-evaluation-meta p {
  margin: 0 0 6px;
}

.sql-evaluation-meta p:last-child {
  margin-bottom: 0;
}

.exercise-feedback {
  border: 1px solid rgba(127, 152, 202, 0.36);
  border-radius: 12px;
  padding: 12px;
  background: rgba(11, 21, 40, 0.62);
  display: grid;
  gap: 6px;
}

.exercise-feedback strong,
.exercise-feedback p {
  margin: 0;
}

.exercise-feedback.is-neutral {
  border-color: rgba(127, 152, 202, 0.36);
}

.exercise-feedback.is-correct {
  border-color: rgba(54, 157, 93, 0.72);
  background: rgba(18, 54, 33, 0.55);
}

.exercise-feedback.is-warning {
  border-color: rgba(184, 135, 43, 0.72);
  background: rgba(60, 44, 14, 0.52);
}

.exercise-feedback.is-error {
  border-color: rgba(191, 88, 88, 0.76);
  background: rgba(62, 19, 24, 0.52);
}

.exercise-feedback__refs {
  margin-top: 2px;
  font-size: 0.86rem;
}

.exercise-feedback__refs a {
  color: #d6e6ff;
}

.exercise-feedback__refs a:hover,
.exercise-feedback__refs a:focus-visible {
  color: #f2f7ff;
}

/* ===========================
   D-Book Randnavigation (Prev/Next + Section-Jump)
=========================== */

.page-edge-nav__control {
  position: fixed;
  z-index: 62;
  display: none;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  text-decoration-line: none;
  border: 0;
  padding: 0;
  margin: 0;
  min-width: 42px;
  min-height: 42px;
  background: transparent;
  color: #ecf2ff;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: opacity var(--ui-motion-duration) var(--ui-motion-ease), transform var(--ui-motion-press-duration) var(--ui-motion-ease), text-shadow var(--ui-motion-duration) var(--ui-motion-ease), color var(--ui-motion-duration) var(--ui-motion-ease);
}

.page-edge-nav__control.is-visible {
  display: inline-flex;
}

.page-edge-nav__control--prev {
  left: var(--edge-nav-left, 12px);
  top: 50vh;
  transform: translateY(-50%);
}

.page-edge-nav__control--next {
  right: var(--edge-nav-right, 12px);
  top: 50vh;
  transform: translateY(-50%);
}

.page-edge-nav__control--jump {
  right: var(--edge-nav-right, 12px);
  bottom: calc(26px + env(safe-area-inset-bottom, 0px));
}

.page-edge-nav__symbol {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: clamp(1.95rem, 2.3vw, 2.55rem);
  font-weight: 700;
  line-height: 1;
  text-shadow: 0 1px 0 rgba(8, 10, 18, 0.82), 0 0 14px rgba(20, 42, 86, 0.24);
}

.page-edge-nav__control:is(:link, :visited, :hover, :focus-visible, :active) {
  text-decoration: none;
  text-decoration-line: none;
}

.page-edge-nav__control:hover,
.page-edge-nav__control:focus-visible {
  color: #f7fbff;
  text-shadow: 0 1px 0 rgba(8, 10, 18, 0.92), 0 0 18px rgba(104, 138, 201, 0.42);
}

.page-edge-nav__control:active {
  transform: translateY(-50%) scale(0.96);
}

.page-edge-nav__control--jump:active {
  transform: scale(0.96);
}

.page-edge-nav__control:focus-visible {
  outline: 2px solid rgba(160, 196, 255, 0.95);
  outline-offset: 4px;
}

body.mobile-nav-open .page-edge-nav__control {
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 1080px) {
  .page-edge-nav__control--prev {
    left: 14px;
    top: auto;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    transform: none;
  }

  .page-edge-nav__control--next {
    right: 14px;
    top: auto;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    transform: none;
  }

  .page-edge-nav__control--jump {
    right: 50%;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    transform: translateX(50%);
  }

  .page-edge-nav__control:active {
    transform: scale(0.96);
  }

  .page-edge-nav__control--jump:active {
    transform: translateX(50%) scale(0.96);
  }
}

@media (max-width: 720px) {
  .ui-console__head {
    flex-direction: column;
    align-items: flex-start;
  }

  .sql-result-table {
    min-width: 420px;
  }
}

@media (max-width: 1080px) {
  .caesar-row {
    grid-template-columns: 110px repeat(6, 40px);
    min-width: 390px;
    gap: 6px;
  }

  .caesar-row > div:not(.caesar-label) {
    font-size: 0.98rem;
  }

  .caesar-table {
    min-width: 390px;
    font-size: 0.94rem;
  }

  .caesar-example-wheel .caesar-wheel-embed {
    padding: 12px;
  }

  .java-code-field {
    min-height: 220px;
  }

  .java-stdin-field {
    min-height: 88px;
  }

  .java-output {
    font-size: 0.88rem;
  }

  .sql-query-field {
    min-height: 220px;
  }

  .sql-result-table {
    min-width: 460px;
    font-size: 0.9rem;
  }

  .sql-result-table th,
  .sql-result-table td {
    padding: 7px 8px;
  }

  .sql-result-table th {
    white-space: nowrap;
  }

  .sql-result-table td {
    white-space: normal;
  }
}

@media (max-width: 720px) {
  .tool-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  :is(.block-tool, .tool-shell) textarea:not(.ui-textarea) {
    min-height: 96px;
    padding: 9px;
  }

  .shift-controls .caesar-arrow-btn {
    width: 40px;
    min-width: 40px;
    min-height: 40px;
  }

  .freq-chart {
    min-height: 160px;
    padding: 6px;
  }

  .freq-bars-area {
    min-width: 320px;
  }

  .java-code-field {
    min-height: 160px;
  }

  .java-output {
    font-size: 0.84rem;
    padding: 8px;
    min-height: 96px;
  }

  .sql-query-field {
    min-height: 150px;
  }

  .sql-output {
    padding: 8px;
  }

  .sql-result-table {
    min-width: 380px;
    font-size: 0.86rem;
  }
}

/* ===========================
   Werkzeuge: ER-Diagramm-Editor (Stufe 2)
=========================== */

.er-editor-layout {
  display: grid;
  gap: 16px;
}

.er-editor-divider {
  height: 1px;
  background: rgba(147, 172, 214, 0.26);
}

.er-tool-groups {
  display: grid;
  gap: 18px;
}

.tool-action-stack {
  display: grid;
  gap: 18px;
}

.tool-action-section {
  display: grid;
  gap: 12px;
}

.tool-action-section__title {
  margin: 0;
  color: #c5cbd6;
  font-size: 0.95rem;
  font-weight: 600;
}

.tool-action-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.er-editor-label-control {
  max-width: 100%;
}

.er-editor-help {
  margin: 0;
  color: #ebf2ff;
  font-size: 1rem;
  line-height: 1.5;
}

.er-shortcuts {
  border: 1px solid rgba(109, 132, 174, 0.28);
  border-radius: 10px;
  background: rgba(9, 18, 34, 0.36);
}

.er-shortcuts__summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  cursor: pointer;
  color: #dce7fa;
  font-size: 0.88rem;
  font-weight: 600;
}

.er-shortcuts__summary::-webkit-details-marker {
  display: none;
}

.er-shortcuts__summary::after {
  content: '▾';
  font-size: 0.75rem;
  opacity: 0.85;
  transition: transform 0.16s ease;
}

.er-shortcuts[open] .er-shortcuts__summary::after {
  transform: rotate(180deg);
}

.er-shortcuts__summary:focus-visible {
  outline: none;
  box-shadow: var(--ui-focus-ring);
  border-radius: 8px;
}

.er-shortcuts__content {
  padding: 0 10px 9px;
}

.er-shortcuts__list {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 6px 12px;
}

.er-shortcuts__list div {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px;
}

.er-shortcuts__list dt,
.er-shortcuts__list dd {
  margin: 0;
}

.er-shortcuts__list kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  min-height: 24px;
  padding: 0 7px;
  border: 1px solid rgba(140, 169, 220, 0.34);
  border-radius: 6px;
  background: rgba(11, 21, 40, 0.74);
  color: #f4f8ff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
}

.er-shortcuts__list dd {
  font-size: 0.82rem;
  color: #d7e2f6;
}

.er-pattern-loader {
  margin-top: 10px;
  padding: 10px;
  border: 1px solid rgba(109, 132, 174, 0.28);
  border-radius: 10px;
  background: rgba(9, 18, 34, 0.36);
  display: grid;
  gap: 7px;
}

.er-pattern-loader__label {
  font-size: 0.82rem;
  color: #dbe8ff;
  font-weight: 600;
}

.er-pattern-loader__select {
  min-height: 38px;
}

.er-pattern-loader__hint {
  margin: 0;
  font-size: 0.78rem;
  color: rgba(214, 228, 251, 0.85);
}

.er-stage-title {
  margin: 0;
  font-size: 0.98rem;
  color: #e8f0ff;
}

.er-export {
  position: relative;
}

.er-export-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  display: grid;
  gap: 6px;
  min-width: 130px;
  padding: 8px;
  border: 1px solid rgba(114, 136, 174, 0.5);
  border-radius: 12px;
  background: rgba(9, 19, 35, 0.97);
  box-shadow: var(--shadow-soft);
  z-index: 5;
}

.er-export-menu[hidden] {
  display: none !important;
}

.er-export-menu .ui-button {
  justify-content: flex-start;
}

.er-export-menu .ui-button:focus-visible,
.er-export > .ui-button:focus-visible {
  box-shadow: var(--ui-focus-ring);
}

.er-editor-stage {
  border: 1px solid rgba(112, 136, 180, 0.44);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(5, 13, 25, 0.98), rgba(4, 11, 21, 0.96));
  box-shadow: inset 0 0 0 1px rgba(153, 181, 232, 0.08);
  overflow: hidden;
  min-height: 260px;
  padding: 8px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) 14px;
  gap: 2px;
}

.er-editor-overlay {
  display: block;
}

.er-canvas-toolbar {
  justify-self: stretch;
  padding: 6px;
  border: 1px solid rgba(122, 146, 190, 0.34);
  border-radius: 12px;
  background: rgba(7, 17, 32, 0.82);
  box-shadow: inset 0 1px 0 rgba(212, 226, 251, 0.05);
}

.er-context-panel {
  border: 1px solid rgba(112, 138, 184, 0.34);
  border-radius: 12px;
  background: rgba(8, 17, 32, 0.88);
  padding: 9px;
  display: grid;
  gap: 10px;
}

.er-context-sheet-toggle {
  display: none;
}

.er-context-section {
  display: grid;
  gap: 7px;
}

.er-editor-workspace .er-context-panel .er-context-section + .er-context-section {
  border-top: 1px solid rgba(122, 146, 190, 0.24);
  padding-top: 10px;
}

.er-context-title {
  margin: 0;
  font-size: 0.84rem;
  color: #e6f0ff;
}

.er-editor-canvas {
  width: 100%;
  min-height: 280px;
  display: block;
  touch-action: none;
}

.grid-toggle-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px;
  border: 1px solid rgba(132, 156, 202, 0.4);
  border-radius: 999px;
  background: rgba(6, 16, 31, 0.72);
}

.diagram-grid-canvas {
  --diagram-grid-size: 24px;
  --diagram-grid-line: rgba(152, 178, 230, 0.12);
  --diagram-grid-line-strong: rgba(152, 178, 230, 0.18);
  background:
    linear-gradient(to right, var(--diagram-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--diagram-grid-line) 1px, transparent 1px),
    linear-gradient(to right, var(--diagram-grid-line-strong) 1px, transparent 1px),
    linear-gradient(to bottom, var(--diagram-grid-line-strong) 1px, transparent 1px),
    rgba(5, 12, 24, 0.72);
  background-size:
    var(--diagram-grid-size) var(--diagram-grid-size),
    var(--diagram-grid-size) var(--diagram-grid-size),
    calc(var(--diagram-grid-size) * 4) calc(var(--diagram-grid-size) * 4),
    calc(var(--diagram-grid-size) * 4) calc(var(--diagram-grid-size) * 4),
    auto;
  background-position: 0 0, 0 0, 0 0, 0 0, 0 0;
}

.diagram-grid-canvas[data-grid-variant='network'] {
  --diagram-grid-line: rgba(198, 220, 255, 0.16);
  --diagram-grid-line-strong: rgba(198, 220, 255, 0.26);
}

.diagram-grid-canvas[data-grid-variant='er'],
.diagram-grid-canvas[data-grid-variant='uml'] {
  --diagram-grid-line: rgba(166, 189, 235, 0.1);
  --diagram-grid-line-strong: rgba(166, 189, 235, 0.16);
}

.diagram-grid-canvas.is-grid-hidden {
  background: rgba(5, 12, 24, 0.72);
}

.er-editor-resize-handle {
  width: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(122, 149, 195, 0.15), rgba(122, 149, 195, 0.4), rgba(122, 149, 195, 0.15));
  cursor: ns-resize;
  touch-action: none;
  opacity: 0.82;
  transition: opacity 0.15s ease;
}

.er-editor-resize-handle:hover,
.er-editor-resize-handle:focus-visible {
  opacity: 1;
}

.er-editor-status {
  margin: 0;
}

.er-glossary-bridge {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.er-glossary-bridge h4 {
  margin: 0;
}

.er-glossary-bridge__intro {
  margin: 0;
  color: rgba(231, 240, 255, 0.9);
}

.er-glossary-bridge__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 10px;
}

.er-glossary-bridge__group {
  border: 1px solid rgba(126, 157, 212, 0.26);
  border-radius: 10px;
  background: rgba(8, 16, 30, 0.56);
  padding: 10px;
}

.er-glossary-bridge__group h5 {
  margin: 0 0 8px;
  font-size: 0.92rem;
}

.er-glossary-bridge__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.er-glossary-bridge__list li {
  display: grid;
  gap: 2px;
}

.er-glossary-bridge__list a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
}

.er-glossary-bridge__list a:hover {
  text-decoration: underline;
}

.er-glossary-bridge__list span {
  font-size: 0.84rem;
  color: rgba(221, 233, 255, 0.82);
}

.er-unified-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  overflow: visible;
}

.er-action-dropdown {
  position: relative;
  display: inline-flex;
  gap: 4px;
}

.er-icon-button {
  --ui-btn-height: 44px;
  --ui-btn-padding-x: 0;
  position: relative;
  width: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-color: rgba(122, 146, 190, 0.38);
  background: rgba(13, 24, 44, 0.52);
  color: #f4f8ff;
}

.er-icon-button:hover {
  background: rgba(22, 37, 66, 0.65);
  border-color: rgba(145, 177, 234, 0.42);
}

.er-icon-button.ui-button--selected,
.er-icon-button.ui-button--selected:hover {
  background: rgba(63, 97, 163, 0.86);
  border-color: rgba(168, 197, 255, 0.62);
}

.er-icon-button--menu {
  width: 24px;
  min-width: 24px;
  font-size: 0.74rem;
  padding-inline: 0;
}

.er-action-menu {
  position: absolute;
  top: calc(100% + 7px);
  left: 0;
  min-width: 190px;
  z-index: 20;
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 1px solid rgba(114, 136, 174, 0.5);
  border-radius: 12px;
  background: rgba(9, 19, 35, 0.96);
  box-shadow: var(--shadow-soft);
}

.er-action-menu[hidden] {
  display: none !important;
}

.er-action-menu .ui-button {
  justify-content: flex-start;
}

.er-icon-button svg {
  width: 23px;
  height: 23px;
  stroke: currentColor;
}

.er-action-tooltip {
  position: absolute;
  left: 50%;
  top: calc(100% + 10px);
  transform: translate(-50%, 4px);
  border: 1px solid rgba(120, 153, 206, 0.45);
  border-radius: 8px;
  padding: 5px 9px;
  font-size: 0.77rem;
  font-weight: 560;
  line-height: 1.2;
  color: #eff5ff;
  white-space: nowrap;
  background: rgba(4, 12, 24, 0.96);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.14s ease, transform 0.14s ease;
  z-index: 16;
}

.er-icon-button:hover .er-action-tooltip,
.er-icon-button:focus-visible .er-action-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.er-icon-button:focus-visible {
  box-shadow: var(--ui-focus-ring);
}

.er-inline-label-editor {
  display: grid;
  grid-template-columns: minmax(220px, 1fr);
  align-items: start;
  gap: 8px;
  border: 1px solid rgba(112, 138, 184, 0.26);
  border-radius: 10px;
  padding: 8px;
  background: rgba(8, 16, 31, 0.55);
}

.er-selection-indicator {
  margin: 0;
  justify-self: start;
  border: 1px solid rgba(128, 156, 206, 0.32);
  border-radius: 999px;
  padding: 3px 9px;
  color: #deebff;
  background: rgba(12, 24, 45, 0.58);
  font-size: 0.76rem;
  line-height: 1.2;
  min-height: 1.7rem;
  min-width: 84px;
}

.er-selection-indicator[data-type="entity"] {
  border-color: rgba(138, 173, 241, 0.42);
}

.er-selection-indicator[data-type="relationship"] {
  border-color: rgba(165, 188, 245, 0.44);
}

.er-selection-indicator[data-type="attribute"] {
  border-color: rgba(176, 205, 255, 0.42);
}

.er-inline-label-editor .ui-input {
  min-height: 36px;
  justify-self: start;
  width: min(100%, 420px);
}

.er-inline-label-editor .ui-input:disabled {
  opacity: 0.85;
}

.er-attribute-owner {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 0.76rem;
  color: #c9daf8;
}

.er-selection-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.er-node-flags {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.er-flag-toggle {
  --ui-btn-height-sm: 32px;
  border-color: rgba(122, 146, 190, 0.34);
  background: rgba(12, 23, 42, 0.48);
  color: #e8f1ff;
}

.er-flag-toggle[aria-pressed="true"] {
  border-color: rgba(152, 186, 246, 0.52);
  background: rgba(55, 86, 145, 0.62);
  color: #f6faff;
}

.er-connection-inspector-wrap {
  gap: 8px;
  min-height: 232px;
  align-content: start;
}

.er-connection-inspector-hint {
  margin: 0;
  padding: 12px;
  border: 1px dashed rgba(104, 127, 170, 0.28);
  border-radius: 12px;
  color: #c6d6f3;
  background: rgba(9, 18, 34, 0.38);
}

.er-connection-inspector {
  border: 1px solid rgba(104, 127, 170, 0.26);
  border-radius: 10px;
  background: rgba(9, 18, 34, 0.62);
  padding: 9px;
  display: grid;
  gap: 8px;
}

.er-connection-inspector[hidden] {
  display: none !important;
}

.er-connection-inspector__meta {
  margin: 0;
  color: #d3def2;
  font-size: 0.86rem;
}

.er-connection-matrix {
  display: grid;
  grid-template-columns: minmax(110px, 0.72fr) minmax(90px, 1fr) minmax(90px, 1fr);
  gap: 6px 8px;
  align-items: center;
}

.er-connection-matrix__cell {
  margin: 0;
  min-width: 0;
}

.er-connection-matrix__cell--head {
  color: #e9f1ff;
  font-size: 0.78rem;
  font-weight: 600;
}

.er-connection-matrix__cell--label {
  color: #cdd9ef;
  font-size: 0.8rem;
}

.er-connection-matrix__cell--meta {
  justify-self: stretch;
  text-align: left;
  color: #e9f2ff;
  font-size: 0.8rem;
  font-weight: 620;
  letter-spacing: 0.01em;
}

.er-compact-select {
  min-height: 34px;
  padding: 0 28px 0 9px;
  font-size: 0.82rem;
  border-radius: 8px;
  background-size: 12px;
  background-position: right 9px center;
}

.er-participants-editor {
  border: 1px solid rgba(112, 139, 187, 0.3);
  border-radius: 10px;
  padding: 8px;
  background: rgba(8, 17, 32, 0.48);
}

.er-participants-grid {
  display: grid;
  grid-template-columns: minmax(120px, 1.2fr) minmax(86px, 1fr) minmax(86px, 1fr);
  gap: 6px;
  align-items: center;
}

.er-participants-grid > p {
  margin: 0;
  font-size: 0.78rem;
  color: #dbe7fd;
}

.er-participants-grid .er-participants-head {
  font-size: 0.75rem;
  color: #e7f1ff;
  font-weight: 600;
}

.er-editor-guide {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 12px;
}

.er-editor-guide h5 {
  margin: 0 0 8px;
}

.er-editor-guide ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text);
}

.er-relational-output {
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--glass-box-border);
  padding-top: 14px;
  color: #eff5ff;
}

.er-relational-output h4 {
  margin: 0;
  color: #f4f8ff;
}

.er-relational-output__hint {
  margin: 0;
  color: #e3ecfb;
}

.er-relational-output__warning {
  margin: 0;
}

.er-relational-model-output {
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  line-height: 1.5;
  min-height: 180px;
}

.er-processing-output {
  display: grid;
  gap: 10px;
}

.er-processing-output h4 {
  margin: 0;
  color: #eff5ff;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.er-relational-output h4 {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.relation-output-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.relation-card {
  border: 1px solid rgba(123, 152, 201, 0.42);
  border-radius: 12px;
  background: rgba(7, 17, 33, 0.92);
  padding: 12px;
  color: #eef5ff;
}

.relation-card h5 {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #f4f8ff;
}

.relation-card ul {
  margin: 0;
  padding-left: 18px;
}

.relation-card li {
  margin-bottom: 4px;
}

.relation-card li.is-primary-key {
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.er-node {
  cursor: grab;
}

.er-node:active {
  cursor: grabbing;
}

.er-node.is-dragging rect,
.er-node.is-dragging ellipse,
.er-node.is-dragging polygon {
  filter: drop-shadow(0 0 0.45rem rgba(88, 138, 245, 0.45));
}

body.er-dragging {
  overflow: hidden;
  touch-action: none;
}

.er-node rect,
.er-node ellipse,
.er-node polygon {
  fill: #0d223f;
  stroke: #9fbcf2;
  stroke-width: 2;
  transition: fill var(--ui-motion-duration) var(--ui-motion-ease), stroke var(--ui-motion-duration) var(--ui-motion-ease), filter var(--ui-motion-duration) var(--ui-motion-ease);
}

.er-node text {
  fill: #f2f7ff;
  font-weight: 700;
  font-size: 0.92rem;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
}

.er-node text.is-primary-key {
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.er-node--relationship polygon {
  fill: #112c4f;
}

.er-node--attribute ellipse {
  fill: #102946;
}

.er-node.is-selected rect,
.er-node.is-selected ellipse,
.er-node.is-selected polygon {
  stroke: #7ba6f7;
  fill: #1a3761;
  filter: drop-shadow(0 0 0.35rem rgba(56, 111, 221, 0.28));
}

.er-node.is-connecting rect,
.er-node.is-connecting ellipse,
.er-node.is-connecting polygon {
  stroke: #7ba6f7;
  fill: #1a3761;
}

.er-connection {
  fill: none;
  stroke: #b2c8ef;
  stroke-width: 2.4;
  stroke-linecap: round;
  cursor: pointer;
}

.er-connection.is-selected {
  stroke: #76a5ff;
  stroke-width: 3;
}

.er-weak-owner-link {
  fill: none;
  stroke: rgba(182, 206, 243, 0.92);
  stroke-width: 2.2;
  stroke-linecap: round;
}

.er-isa-arrow-link {
  fill: none;
  stroke: rgba(201, 222, 255, 0.95);
  stroke-width: 2.4;
  stroke-linecap: round;
  marker-end: url(#er-isa-arrowhead);
}

.er-connection-label {
  fill: #f4f8ff;
  font-weight: 700;
  font-size: 0.82rem;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  paint-order: stroke fill;
  stroke: rgba(5, 12, 22, 0.95);
  stroke-width: 4px;
}

@media (max-width: 720px) {
  .er-connection,
  .er-weak-owner-link,
  .er-isa-arrow-link {
    stroke-width: 3.2;
  }

  .er-connection-label {
    font-size: 0.9rem;
    stroke-width: 5px;
  }

  .er-editor-stage,
  .er-editor-canvas {
    min-height: 170px;
  }

  .er-editor-stage {
    padding: 6px;
    grid-template-rows: auto minmax(0, 1fr) 10px;
    gap: 1px;
  }

  .er-editor-canvas {
    height: auto;
  }

  .er-canvas-toolbar {
    justify-self: stretch;
    padding: 4px;
  }

  .er-context-sheet-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 34px;
    border: 1px solid rgba(132, 162, 214, 0.44);
    border-radius: 999px;
    background: rgba(10, 22, 41, 0.9);
    color: #e6f0ff;
    font: inherit;
    font-size: 0.8rem;
  }

  .er-context-panel {
    position: fixed;
    left: 8px;
    right: 8px;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 8px);
    max-height: min(60vh, 460px);
    overflow: auto;
    z-index: 75;
    box-shadow: 0 -10px 28px rgba(2, 8, 20, 0.52);
    transform: translateY(calc(100% - 42px));
    transition: transform 0.22s ease;
  }

  .er-context-panel::before {
    content: "";
    display: block;
    width: 36px;
    height: 4px;
    border-radius: 999px;
    margin: 0 auto 8px;
    background: rgba(195, 213, 245, 0.6);
  }

  .er-context-panel.is-expanded {
    transform: translateY(0);
  }

  .er-export {
    width: 100%;
  }

  .er-export-menu {
    position: static;
    margin-top: 6px;
  }

  .er-inline-label-editor {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .er-shortcuts__list {
    grid-template-columns: 1fr;
  }

  .er-connection-matrix {
    grid-template-columns: minmax(84px, 0.72fr) 1fr 1fr;
    gap: 6px;
  }
}

@media (max-width: 720px) {
  .er-unified-toolbar {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 6px;
    overflow: visible;
    position: sticky;
    top: 0;
    z-index: 3;
  }

  .er-unified-toolbar .er-icon-button {
    width: 36px;
    min-width: 36px;
    min-height: 36px;
  }
}

.tool-subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  align-items: stretch;
}

.tool-section-divider {
  margin: 14px 0 12px;
  border: 0;
  border-top: 1px solid rgba(188, 206, 236, 0.35);
}

.tool-subnav .ui-button {
  --ui-btn-height-sm: 34px;
  --ui-btn-padding-x: 10px;
  font-size: 0.84rem;
  border-radius: 12px;
  text-decoration: none;
  justify-content: center;
  white-space: nowrap;
  flex: 1 1 152px;
  min-width: 152px;
}

.tool-subnav .ui-button[aria-current="page"] {
  --ui-btn-surface: rgba(20, 42, 82, 0.62);
  --ui-btn-surface-hover: rgba(24, 50, 97, 0.68);
  --ui-btn-surface-active: rgba(17, 35, 72, 0.74);
  --ui-btn-border: rgba(118, 158, 229, 0.38);
  --ui-btn-border-hover: rgba(142, 180, 245, 0.52);
  --ui-btn-highlight: rgba(187, 212, 255, 0.14);
  --ui-btn-focus-ring: rgba(94, 132, 210, 0.4);
}

.tool-subnav .ui-button:hover,
.tool-subnav .ui-button:focus-visible {
  text-decoration: none;
}

/* ===========================
   Werkzeuge: Struktogramm-Editor (V1)
=========================== */

.struktogramm-editor {
  display: grid;
  gap: 10px;
}

.struktogramm-help {
  margin: 0;
  color: #ebf2ff;
}

.strukto-toolbar {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.strukto-toolbar .tool-action-group {
  grid-column: 1 / -1;
}

.strukto-inspector {
  border: 1px solid var(--glass-box-border);
  border-radius: 12px;
  background: var(--glass-box-bg);
  box-shadow: inset 0 1px 0 rgba(210, 225, 255, 0.04);
  backdrop-filter: blur(var(--glass-box-blur));
  -webkit-backdrop-filter: blur(var(--glass-box-blur));
  padding: 12px;
  display: grid;
  gap: 10px;
}

.strukto-stage-title {
  margin: 0;
  font-size: 0.98rem;
  color: #e8f0ff;
}

.strukto-stage {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  min-height: 260px;
  padding: 0;
}

.strukto-canvas {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(123, 148, 196, 0.42);
  background: rgba(10, 20, 36, 0.72);
}

.strukto-block {
  border: 1px solid rgba(123, 148, 196, 0.48);
  border-radius: 8px;
  background: transparent;
  box-shadow: inset 0 1px 0 rgba(211, 226, 252, 0.06);
  overflow: hidden;
  margin-left: calc(var(--depth) * 10px);
  cursor: pointer;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

.strukto-block.is-selected {
  border-color: rgba(151, 182, 238, 0.8);
  box-shadow: inset 0 1px 0 rgba(222, 234, 255, 0.11), 0 0 0 2px rgba(81, 122, 194, 0.25);
}

.strukto-block__header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  border-bottom: 1px solid rgba(125, 153, 204, 0.42);
  padding: 7px 10px;
  min-height: 40px;
  background: transparent;
}

.strukto-block__type {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #d6e7ff;
  background: rgba(50, 76, 121, 0.36);
  border: 1px solid rgba(129, 160, 216, 0.5);
  border-radius: 6px;
  padding: 2px 8px;
}

.strukto-block__text {
  color: #edf3ff;
  font-size: 0.96rem;
  font-weight: 600;
}

.strukto-branch {
  border-top: 1px solid rgba(125, 153, 204, 0.38);
}

.strukto-branch__title {
  margin: 0;
  padding: 5px 10px;
  font-size: 0.82rem;
  color: #ccddfb;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(125, 153, 204, 0.28);
}

.strukto-branch__body {
  display: grid;
  gap: 8px;
  padding: 8px;
}

.strukto-block--placeholder {
  border-style: dashed;
  border-color: rgba(141, 171, 224, 0.54);
  background: rgba(14, 27, 49, 0.52);
}

.strukto-block--placeholder .strukto-block__text {
  color: #95b2df;
  font-style: italic;
  font-weight: 500;
}

.strukto-block--program > .strukto-block__header {
  border-bottom-width: 1.5px;
}

.strukto-block--program > .strukto-block__header .strukto-block__text {
  font-size: 1rem;
  font-weight: 700;
}

.strukto-if-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.strukto-if-branch {
  border-top: 0;
}

.strukto-if-branch + .strukto-if-branch {
  border-left: 1px solid rgba(125, 153, 204, 0.44);
}

.strukto-if-branch .strukto-branch__title {
  font-weight: 700;
  text-align: center;
}

.strukto-if-branch--yes .strukto-branch__title {
  color: #a7ebcd;
}

.strukto-if-branch--no .strukto-branch__title {
  color: #ffb8b8;
}

.strukto-block--loop > .strukto-block__header .strukto-block__type::before {
  content: "↻ ";
}

.strukto-switch {
  border-top: 1px solid rgba(125, 153, 204, 0.38);
}

.strukto-switch__selector {
  position: relative;
  min-height: 32px;
  border-bottom: 1px solid rgba(125, 153, 204, 0.38);
}

.strukto-switch__selector::before {
  content: "";
  position: absolute;
  left: 0;
  right: 25%;
  top: 0;
  bottom: 0;
  border-right: 1px solid rgba(125, 153, 204, 0.38);
  transform: skewX(-32deg);
  transform-origin: right center;
}

.strukto-switch__selector::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 25%;
  bottom: 0;
  border-left: 1px solid rgba(125, 153, 204, 0.38);
  transform: skewX(-38deg);
  transform-origin: left center;
}

.strukto-switch__branches {
  display: grid;
  grid-template-columns: repeat(var(--switch-columns, 2), minmax(0, 1fr));
}

.strukto-switch-branch {
  border-top: 0;
}

.strukto-switch-branch + .strukto-switch-branch {
  border-left: 1px solid rgba(125, 153, 204, 0.44);
}

.strukto-switch-branch .strukto-branch__title {
  text-align: left;
  font-weight: 700;
}

.strukto-switch-branch--default .strukto-branch__title {
  color: #ffd2b2;
}

.strukto-switch-editor {
  border-top: 1px solid rgba(125, 153, 204, 0.28);
  padding-top: 10px;
  display: grid;
  gap: 10px;
}

.strukto-block--call > .strukto-block__header {
  position: relative;
  padding-left: 16px;
  padding-right: 16px;
}

.strukto-block--call > .strukto-block__header::before,
.strukto-block--call > .strukto-block__header::after {
  content: "";
  position: absolute;
  top: 5px;
  bottom: 5px;
  width: 1px;
  background: rgba(143, 172, 226, 0.6);
}

.strukto-block--call > .strukto-block__header::before {
  left: 7px;
}

.strukto-block--call > .strukto-block__header::after {
  right: 7px;
}

.strukto-import-label {
  cursor: pointer;
}

.struktogramm-editor .tool-output {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
}

.struktogramm-editor .tool-output > h4 {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

@media (max-width: 720px) {
  .er-editor-page .hero-intro p:nth-of-type(n + 2) {
    display: none;
  }

  .tool-shell {
    margin-top: 8px;
    gap: 8px;
  }

  .tool-actions {
    gap: 8px;
  }

  .tool-actions .ui-button,
  .tool-actions button {
    min-height: 36px;
    padding: 7px 10px;
  }

  .tool-subnav {
    gap: 6px;
    padding: 0;
    position: static;
    background: none;
    border-radius: 0;
  }

  .tool-subnav .ui-button {
    --ui-btn-height-sm: 32px;
    --ui-btn-padding-x: 8px;
    font-size: 0.8rem;
    flex-basis: calc(50% - 3px);
    min-width: 0;
  }

  .strukto-toolbar {
    grid-template-columns: 1fr;
  }

  .strukto-stage {
    min-height: 210px;
  }

  .strukto-inspector {
    padding: 8px;
    gap: 8px;
  }

  .strukto-canvas {
    gap: 6px;
  }

  .strukto-block {
    margin-left: calc(var(--depth) * 4px);
  }
}

/* ===========================
   Werkzeug: UML-Klassendiagramm-Editor
=========================== */
.uml-tool-shell .er-canvas-toolbar {
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}

.uml-action-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid rgba(122, 150, 198, 0.26);
  border-radius: 10px;
  background: rgba(5, 14, 30, 0.78);
}

.uml-group-label {
  font-size: 0.76rem;
  color: rgba(210, 227, 255, 0.84);
  letter-spacing: 0.03em;
  font-weight: 700;
}

.uml-context-panel {
  margin-top: 14px;
}

.uml-inline-label {
  display: block;
  font-size: 0.82rem;
  color: rgba(210, 227, 255, 0.82);
  margin-bottom: 6px;
}

.uml-checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 0.86rem;
  color: rgba(220, 232, 255, 0.9);
}

.uml-member-list {
  display: grid;
  gap: 8px;
}

.uml-member-editor-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 8px;
}

.uml-member-editor-row.is-constructor .ui-input {
  font-style: italic;
}

.uml-relation-editor {
  display: grid;
  gap: 10px;
}

.uml-relation-multiplicity {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.uml-relation-multiplicity label {
  font-size: 0.8rem;
  color: rgba(210, 227, 255, 0.84);
}

.uml-class-box {
  fill: rgba(11, 24, 43, 0.92);
  stroke: rgba(176, 203, 247, 0.7);
  stroke-width: 1.6;
}

.uml-class.is-selected .uml-class-box {
  stroke: #f9c74f;
  stroke-width: 2.2;
}

.uml-class.is-connect-source .uml-class-box {
  stroke: #67d3ff;
}

.uml-class-divider {
  stroke: rgba(176, 203, 247, 0.66);
  stroke-width: 1.2;
}

.uml-class-title {
  fill: #edf5ff;
  font: 700 16px var(--font-sans);
}

.uml-class-title.is-abstract {
  font-style: italic;
}

.uml-member-text {
  fill: #d9e9ff;
  font: 500 13px var(--font-mono);
}

.uml-member-text.is-constructor {
  font-style: italic;
}

.uml-relation-line {
  stroke: #c2d8ff;
  stroke-width: 2;
}

.uml-relation-line.is-selected {
  stroke: #f9c74f;
  stroke-width: 2.4;
}

.uml-relation-label,
.uml-multiplicity {
  fill: #edf5ff;
  font: 600 12px var(--font-sans);
}

.uml-marker-fill {
  fill: #c2d8ff;
}

.uml-marker-open {
  fill: #0b182b;
  stroke: #c2d8ff;
  stroke-width: 1;
}

.uml-marker-closed {
  fill: #dcecff;
  stroke: #c2d8ff;
  stroke-width: 1;
}

@media (max-width: 960px) {
  .uml-action-group {
    width: 100%;
  }

  .uml-relation-multiplicity {
    grid-template-columns: 1fr;
  }
}

.uml-editor-didactic-note {
  margin: 8px 0 0;
  font-size: 0.88rem;
  color: rgba(215, 230, 255, 0.88);
}

.uml-member-editor-row--attribute {
  grid-template-columns: 64px minmax(110px, 1fr) minmax(90px, 1fr) auto auto auto;
}

.uml-member-editor-row--method {
  grid-template-columns: 64px minmax(100px, 1fr) minmax(120px, 1.1fr) minmax(90px, 0.8fr) auto auto;
  align-items: center;
}

.uml-checkbox-row--inline {
  margin-top: 0;
  font-size: 0.78rem;
}

.uml-role-label {
  fill: #d5e5ff;
  font: 500 11px var(--font-sans);
}

.uml-relation-hit-area {
  stroke: rgba(0, 0, 0, 0);
  stroke-width: 14;
  fill: none;
  pointer-events: stroke;
}

.uml-inline-editor-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 7;
}

.uml-secondary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(122, 150, 198, 0.2);
  opacity: 0.9;
}

.uml-inline-input {
  position: absolute;
  min-height: 26px;
  padding: 4px 8px;
  border-radius: 7px;
  border: 1px solid rgba(103, 211, 255, 0.72);
  background: rgba(7, 18, 34, 0.96);
  color: #eff6ff;
  font: 500 13px var(--font-mono);
  box-shadow: 0 0 0 1px rgba(103, 211, 255, 0.3);
  pointer-events: auto;
}

.uml-micro-hint {
  margin: 0 0 8px;
  font-size: 0.76rem;
  line-height: 1.35;
  color: rgba(205, 222, 249, 0.86);
}

.uml-micro-hint code {
  color: #e8f2ff;
  background: rgba(8, 20, 37, 0.8);
  border: 1px solid rgba(122, 150, 198, 0.25);
  border-radius: 4px;
  padding: 0 4px;
}

@media (max-width: 960px) {
  .uml-member-editor-row--attribute,
  .uml-member-editor-row--method {
    grid-template-columns: 1fr 1fr;
  }

  .uml-member-editor-row--attribute .ui-button,
  .uml-member-editor-row--method .ui-button {
    min-height: 34px;
  }
}

/* ===========================
   Werkzeuge: Netzwerk-Werkzeug
=========================== */

.net-tool-shell {
  gap: 12px;
}

.net-tool-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0;
}

.net-tool-palette__label {
  font-weight: 700;
  color: var(--muted);
  margin-right: 4px;
}

.net-tool-stage {
  min-height: 420px;
}

.net-editor-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 7px;
}

.net-editor-toolbar .er-unified-toolbar {
  justify-content: flex-start;
}

.net-editor-canvas {
  min-height: 420px;
  border-radius: 12px;
}

.net-link {
  stroke: rgba(173, 195, 233, 0.62);
  stroke-width: 3;
  cursor: pointer;
}

.net-link.is-selected {
  stroke: rgba(236, 201, 92, 0.95);
  stroke-width: 4;
}

.net-node {
  cursor: grab;
}

.net-node.is-selected .net-node__body {
  stroke: rgba(236, 201, 92, 0.96);
  stroke-width: 2.5;
}

.net-node__body {
  fill: rgba(13, 26, 48, 0.9);
  stroke: rgba(135, 166, 216, 0.54);
  stroke-width: 1.6;
}

.net-node__icon {
  fill: rgba(130, 170, 238, 0.88);
}

.net-node__title {
  font-size: 13px;
  font-weight: 700;
  fill: #e8f0ff;
}

.net-node__subtitle {
  font-size: 11px;
  fill: rgba(210, 224, 248, 0.88);
}

.net-node__title tspan,
.net-node__subtitle tspan {
  dominant-baseline: hanging;
}

.net-node--router .net-node__icon {
  fill: rgba(253, 167, 104, 0.92);
}

.net-node--switch .net-node__icon {
  fill: rgba(161, 215, 119, 0.9);
}

.net-node--dns .net-node__icon {
  fill: rgba(198, 154, 247, 0.95);
}

.net-node--web .net-node__icon {
  fill: rgba(95, 214, 236, 0.92);
}

.net-context-panel {
  gap: 10px;
}

.net-config-grid {
  display: grid;
  grid-template-columns: minmax(120px, 160px) minmax(180px, 1fr);
  align-items: center;
  gap: 10px 12px;
}

.net-validation-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.net-sim-disclaimer {
  margin: 2px 0 10px;
  font-size: 0.82rem;
  color: rgba(205, 222, 249, 0.86);
}

.net-sim-accordion {
  margin: 0;
}

.net-sim-accordion > .subaccordion-body {
  border-top: 0;
}

.net-sim-accordion .subaccordion-title {
  gap: 0;
}

.net-sim-grid {
  margin-bottom: 4px;
}

.net-dns-records {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(122, 150, 198, 0.2);
}

.net-dns-record-grid {
  margin-top: 8px;
}

.net-web-checkbox {
  justify-self: start;
  width: 18px;
  height: 18px;
  accent-color: #8fb8ff;
}

.net-sim-result {
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid rgba(122, 150, 198, 0.25);
  border-radius: 10px;
  background: rgba(8, 18, 34, 0.72);
  display: grid;
  gap: 7px;
}

.net-sim-outcome {
  margin: 0;
  font-weight: 600;
  color: #e7f0ff;
}

.net-sim-outcome.is-success {
  color: #8fe5b0;
}

.net-sim-outcome.is-error {
  color: #ffb3b3;
}

.net-sim-hint,
.net-sim-next {
  margin: 0;
  font-size: 0.88rem;
  color: rgba(213, 226, 248, 0.94);
}

/* ===========================
   Werkzeuge: Sprintplanung
=========================== */

.sprint-tool-shell {
  display: grid;
  gap: 14px;
}

.sprint-session-bar {
  border: 1px solid rgba(122, 150, 198, 0.25);
  border-radius: 12px;
  padding: 12px;
  background: rgba(6, 15, 29, 0.46);
}

.sprint-session-grid {
  display: grid;
  gap: 6px;
  max-width: 420px;
}

.sprint-session-actions {
  margin-top: 10px;
}

.sprint-last-saved {
  margin: 2px 0 0;
  font-size: 0.84rem;
  color: var(--muted);
}

.sprint-session-meta {
  margin-top: 4px;
  display: grid;
  gap: 4px;
}

.sprint-session-meta__row {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  line-height: 1.35;
}

.sprint-session-meta__sep {
  color: rgba(170, 191, 226, 0.6);
  font-size: 0.82rem;
}

.sprint-collab-hint {
  margin: 8px 0 2px;
  font-size: 0.86rem;
  font-weight: 500;
}

.sprint-remote-pending {
  outline: 1px solid rgba(246, 199, 117, 0.88);
  box-shadow: 0 0 0 2px rgba(246, 199, 117, 0.18);
}

.sprint-collab-notice {
  margin: 4px 0 4px;
  font-size: 0.83rem;
}

.sprint-remote-inline-hint {
  display: block;
  margin-top: 4px;
  font-size: 0.76rem;
  color: #f6c775;
}

.sprint-remote-structural-new {
  animation: sprint-remote-new 2.2s ease;
}

@keyframes sprint-remote-new {
  0% { box-shadow: 0 0 0 2px rgba(122, 227, 182, 0.65); }
  100% { box-shadow: none; }
}

.sprint-help-body {
  display: grid;
  gap: 10px;
}

.sprint-help-body ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.sprint-e4-hint {
  margin: 0;
  border: 1px solid rgba(120, 153, 214, 0.28);
  border-radius: 10px;
  padding: 8px 10px;
  background: rgba(11, 23, 45, 0.52);
  font-size: 0.9rem;
}

.sprint-org-body {
  display: grid;
  gap: 12px;
}

.sprint-org-meta,
.sprint-meta-grid {
  display: grid;
  grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
  gap: 8px 12px;
  align-items: center;
}

.sprint-team-list {
  display: grid;
  gap: 10px;
}

.sprint-team-card {
  border: 1px solid rgba(122, 150, 198, 0.25);
  border-radius: 12px;
  padding: 10px;
  background: rgba(8, 18, 34, 0.6);
  display: grid;
  gap: 10px;
}

.sprint-team-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.sprint-member-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.sprint-member-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(170px, 230px) auto;
  gap: 8px;
  align-items: center;
}

.sprint-section {
  border: 1px solid rgba(122, 150, 198, 0.25);
  border-radius: 12px;
  padding: 12px;
  background: rgba(6, 15, 29, 0.42);
}

.sprint-section-header {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
}

.sprint-section-header h5 {
  margin: 0;
}

.sprint-status-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.sprint-nav-btn--done {
  border-style: dashed;
  opacity: 0.88;
}

.sprint-nav {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sprint-empty-state {
  border: 1px dashed rgba(132, 158, 200, 0.32);
  border-radius: 10px;
  padding: 10px;
  font-size: 0.9rem;
  color: var(--muted);
  background: rgba(8, 17, 33, 0.45);
}

.sprint-hint-list {
  margin-top: 8px;
}

.sprint-hint-items {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 4px;
  color: #d9e6ff;
  font-size: 0.86rem;
}

.sprint-hint-items li::marker {
  color: #95b6f4;
}

.sprint-table-wrap {
  margin-top: 12px;
  overflow-x: auto;
}

.sprint-task-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1020px;
}

.sprint-task-table th,
.sprint-task-table td {
  border-bottom: 1px solid rgba(122, 150, 198, 0.2);
  padding: 7px 8px;
  vertical-align: top;
}

.sprint-task-table th {
  text-align: left;
  font-size: 0.84rem;
  color: #d3def1;
}

.sprint-task-table tr.is-blocked {
  background: rgba(118, 29, 29, 0.28);
}

.sprint-readonly-hint {
  margin: 4px 0 0;
  font-size: 0.88rem;
  color: #c5d6f5;
}

.sprint-reflection-grid {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 8px 12px;
  align-items: start;
}

@media (max-width: 840px) {
  .sprint-org-meta,
  .sprint-meta-grid,
  .sprint-reflection-grid {
    grid-template-columns: 1fr;
  }

  .sprint-team-header,
  .sprint-member-list li {
    grid-template-columns: 1fr;
  }
}

/* ===========================
   Werkzeuge: Relationenalgebra (Q2.5)
=========================== */

.ra-tool-shell {
  display: grid;
  gap: 14px;
}

.ra-layout {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.ra-top-row {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(260px, 1fr) minmax(280px, 1fr);
  align-items: stretch;
}

.ra-panel {
  border: 1px solid rgba(122, 150, 198, 0.34);
  border-radius: 14px;
  background: rgba(8, 18, 34, 0.74);
  padding: 12px;
  min-width: 0;
}

.ra-panel--dataset,
.ra-panel--syntax {
  min-height: 240px;
}

.ra-panel--syntax {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
}

.ra-panel h5 {
  margin: 0 0 8px;
}

.ra-form-group {
  margin-bottom: 8px;
}

.ra-expression {
  width: 100%;
  min-height: 220px;
  font-family: var(--font-mono);
}

.ra-operator-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}

.ra-hint {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.ra-operator-button {
  min-width: 46px;
}

.ra-operator-info {
  margin-top: 2px;
  border: 1px solid rgba(122, 150, 198, 0.24);
  border-radius: 10px;
  background: rgba(6, 15, 29, 0.6);
  padding: 8px 10px;
  display: grid;
  gap: 4px;
  min-height: 104px;
  align-content: start;
}

.ra-operator-info__title {
  margin: 0;
  font-weight: 700;
}

.ra-operator-info__definition,
.ra-operator-info__glossary {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.ra-operator-info__glossary a {
  color: #b6d4ff;
}

.ra-schema {
  margin-top: 8px;
}

.ra-schema__label {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.ra-schema__block {
  margin: 0;
  line-height: 1.65;
  padding: 10px 12px;
  border: 1px solid rgba(117, 146, 198, 0.44);
  border-radius: 10px;
  background: rgba(10, 21, 40, 0.72);
}

.ra-table-card {
  border: 1px solid rgba(122, 150, 198, 0.32);
  border-radius: 12px;
  overflow: hidden;
  background: rgba(6, 15, 29, 0.78);
}

.ra-table-card__head {
  padding: 8px 10px;
  font-weight: 600;
  border-bottom: 1px solid rgba(122, 150, 198, 0.26);
}

.ra-result .ui-data-table {
  min-width: 100%;
}

.ra-console {
  margin-bottom: 12px;
}

.ra-message {
  padding: 8px;
}

.ra-output-section h6 {
  margin: 0 0 8px;
}

.ra-output-section + .ra-output-section {
  margin-top: 14px;
}

.ra-output-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  align-items: start;
}

.ra-steps {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.ra-translation {
  margin-top: 14px;
  border-top: 1px solid rgba(122, 150, 198, 0.26);
  padding-top: 12px;
}

.ra-translation__output {
  margin: 8px 0 0;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(122, 150, 198, 0.3);
  background: rgba(6, 15, 29, 0.78);
  color: #e8f2ff;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  min-height: 56px;
}

@media (max-width: 1080px) {
  .ra-top-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ra-output-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .ra-top-row {
    grid-template-columns: 1fr;
  }

  .ra-panel--dataset,
  .ra-panel--syntax {
    min-height: auto;
  }
}

/* ===========================
   Werkzeuge: Sortieralgorithmen
=========================== */
.sorting-tool-shell {
  display: grid;
  gap: 18px;
}

.sorting-layout-stack {
  display: grid;
  gap: 16px;
}

.sorting-top-bar,
.sorting-visual-panel,
.sorting-analysis-panel {
  background: rgba(6, 15, 29, 0.84);
  border: 1px solid rgba(122, 150, 198, 0.34);
  border-radius: 14px;
  padding: 14px;
}

.sorting-top-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: flex-end;
}

.sorting-top-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
}

.sorting-top-group--algorithm {
  flex: 1 1 220px;
}

.sorting-top-group--algorithm .ui-form-group {
  margin-bottom: 0;
  min-width: 220px;
}

.sorting-top-group--controls {
  flex: 2 1 420px;
}

.sorting-top-group--controls .ui-button {
  flex: 1 1 120px;
}

.sorting-top-group--parameters {
  flex: 2 1 360px;
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 10px 12px;
}

.sorting-top-group--parameters .ui-form-group {
  margin-bottom: 0;
}

.sorting-visual-panel {
  display: grid;
  gap: 10px;
}

.sorting-bars {
  width: 100%;
  height: clamp(300px, 44vh, 420px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16px, 1fr));
  align-items: end;
  gap: 6px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(2, 9, 20, 0.85);
  border: 1px solid rgba(122, 150, 198, 0.25);
}

.sorting-bar {
  position: relative;
  border-radius: 7px 7px 5px 5px;
  background: linear-gradient(180deg, #7ea0dd 0%, #45689e 100%);
  transition: height 0.2s linear;
  min-height: 10px;
}

.sorting-bar-value {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  color: #dbe8ff;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  white-space: nowrap;
}

.sorting-bar.is-compare {
  background: linear-gradient(180deg, #6fc4ff 0%, #2a8ecd 100%);
}

.sorting-bar.is-active {
  background: linear-gradient(180deg, #ffca7b 0%, #ca8a2e 100%);
}

.sorting-bar.is-swap {
  background: linear-gradient(180deg, #f88a9c 0%, #cc4560 100%);
}

.sorting-bar.is-sorted {
  background: linear-gradient(180deg, #6de0b2 0%, #2a8f6a 100%);
}

.sorting-bar.is-found {
  background: linear-gradient(180deg, #ffd5ec 0%, #b43f92 100%);
}

.sorting-bar.is-pivot {
  box-shadow: 0 0 0 2px rgba(255, 213, 236, 0.55);
}

.sorting-step-text {
  margin: 12px 0 8px;
  min-height: 1.5rem;
  color: #dbe8ff;
}

.sorting-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  color: #c2d4f3;
  font-size: 0.9rem;
}

.sorting-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sorting-legend-chip {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  display: inline-block;
}

.sorting-legend-chip--compare { background: #2a8ecd; }
.sorting-legend-chip--active { background: #ca8a2e; }
.sorting-legend-chip--swap { background: #cc4560; }
.sorting-legend-chip--sorted { background: #2a8f6a; }
.sorting-legend-chip--found { background: #b43f92; }

.sorting-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}


.sorting-compare-panel {
  background: rgba(6, 15, 29, 0.84);
  border: 1px solid rgba(122, 150, 198, 0.34);
  border-radius: 14px;
  padding: 14px;
  display: grid;
  gap: 10px;
}

.sorting-compare-header h5 {
  margin: 0 0 4px;
}

.sorting-compare-header p {
  margin: 0;
  color: #bfd2f2;
  font-size: 0.9rem;
}

.sorting-compare-canvas-wrap {
  position: relative;
  border-radius: 12px;
  border: 1px solid rgba(122, 150, 198, 0.25);
  background: rgba(2, 9, 20, 0.78);
  padding: 8px;
}

.sorting-compare-svg {
  width: 100%;
  height: auto;
  display: block;
  min-height: 160px;
}

.sorting-compare-axis {
  stroke: rgba(178, 201, 237, 0.65);
  stroke-width: 1;
}

.sorting-compare-axis-label {
  position: absolute;
  color: #b3caef;
  font-size: 0.76rem;
  font-family: var(--font-mono);
  pointer-events: none;
}

.sorting-compare-axis-label--x {
  right: 12px;
  bottom: 8px;
}

.sorting-compare-axis-label--y {
  left: 10px;
  top: 8px;
}

.sorting-compare-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.sorting-compare-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(122, 150, 198, 0.3);
  background: rgba(6, 15, 29, 0.72);
  color: #dbe8ff;
  font-size: 0.8rem;
}

.sorting-compare-legend-line {
  width: 16px;
  height: 3px;
  border-radius: 2px;
  display: inline-block;
}

.sorting-analysis-panel {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2fr);
  gap: 14px;
  align-items: start;
}

.sorting-info-panel {
  background: rgba(2, 9, 20, 0.78);
  border: 1px solid rgba(122, 150, 198, 0.25);
  border-radius: 12px;
  padding: 12px;
}

.sorting-metric-card {
  background: rgba(2, 9, 20, 0.78);
  border: 1px solid rgba(122, 150, 198, 0.25);
  border-radius: 12px;
  padding: 10px;
}

.sorting-metric-label {
  display: block;
  color: #b3caef;
  font-size: 0.82rem;
  margin-bottom: 4px;
}

.sorting-metric-card strong {
  color: #eef5ff;
  font-size: 1.25rem;
}

@media (max-width: 1200px) {
  .sorting-top-group--parameters {
    grid-template-columns: minmax(0, 1fr);
  }

  .sorting-analysis-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .sorting-bars {
    height: 260px;
  }

  .sorting-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .sorting-bars {
    grid-template-columns: repeat(auto-fit, minmax(12px, 1fr));
    gap: 4px;
  }

  .sorting-bar-value {
    font-size: 0.6rem;
    top: -18px;
  }

  .sorting-top-group--controls .ui-button {
    flex-basis: calc(50% - 8px);
  }

  .sorting-metrics {
    grid-template-columns: minmax(0, 1fr);
  }

  .sorting-top-group--controls .ui-button {
    min-width: 150px;
  }
}

/* ===========================
   Werkzeuge: RSA-Prozess
=========================== */

.rsa-tool-shell {
  display: grid;
  gap: 14px;
}

.rsa-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.rsa-panel--wide {
  grid-column: 1 / -1;
}

.rsa-panel {
  border: 1px solid rgba(120, 152, 206, 0.32);
  border-radius: 14px;
  padding: 14px;
  background: linear-gradient(180deg, rgba(7, 16, 30, 0.94), rgba(5, 12, 24, 0.96));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 10px 24px rgba(0, 0, 0, 0.24);
  display: grid;
  gap: 10px;
}

.rsa-panel--keystep {
  border-color: rgba(136, 172, 224, 0.42);
  background: linear-gradient(180deg, rgba(9, 18, 33, 0.94), rgba(6, 13, 25, 0.96));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 10px 24px rgba(0, 0, 0, 0.24);
}

.rsa-panel h5 {
  margin: 0;
  color: #f3f8ff;
}

.rsa-panel-intro {
  margin: 0;
  color: rgba(208, 223, 246, 0.84);
  font-size: 0.92rem;
}

.rsa-status {
  margin: 0;
  font-size: 0.86rem;
  color: rgba(199, 217, 244, 0.86);
}

.rsa-status[data-state="ok"] {
  color: #8ae0b0;
}

.rsa-status[data-state="error"] {
  color: #ff9ca6;
}

.rsa-status[data-state="warn"] {
  color: #ffd892;
}

.rsa-prime-target {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.rsa-prime-list {
  max-height: 200px;
  overflow: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-content: flex-start;
  padding: 8px;
  border-radius: 10px;
  border: 1px solid rgba(113, 143, 194, 0.24);
  background: rgba(3, 10, 22, 0.82);
}

.tool-result-scroll {
  max-height: 4.2rem;
  overflow: auto;
  scrollbar-gutter: stable;
}

.rsa-prime-list.tool-result-scroll {
  max-height: 200px;
}

.rsa-prime-chart-wrap.tool-result-scroll {
  max-height: 260px;
}

.rsa-empty {
  margin: 0;
  color: rgba(188, 208, 236, 0.8);
}

.rsa-prime-chip {
  border: 1px solid rgba(132, 162, 215, 0.4);
  border-radius: 999px;
  background: rgba(20, 35, 58, 0.85);
  color: #eaf1ff;
  padding: 4px 10px;
  font: 500 0.84rem/1.3 var(--font-mono);
  cursor: pointer;
}

.rsa-prime-chip:hover {
  background: rgba(36, 58, 91, 0.9);
}

.rsa-disclosure {
  border-top: 1px solid rgba(113, 143, 194, 0.24);
  padding-top: 8px;
}

.rsa-disclosure-toggle {
  width: 100%;
  border: 1px solid rgba(120, 152, 206, 0.28);
  border-radius: 10px;
  background: rgba(7, 15, 28, 0.72);
  color: rgba(232, 241, 255, 0.95);
  font: 600 0.86rem/1.3 var(--font-ui);
  padding: 8px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.rsa-disclosure-toggle__icon {
  transition: transform 0.2s ease;
}

.rsa-disclosure-toggle[aria-expanded="true"] .rsa-disclosure-toggle__icon {
  transform: rotate(180deg);
}

.rsa-disclosure-panel {
  margin-top: 8px;
  display: grid;
  gap: 8px;
}

.rsa-prime-chart-wrap {
  border: 1px solid rgba(113, 143, 194, 0.24);
  border-radius: 10px;
  background: rgba(3, 10, 22, 0.78);
  padding: 6px;
}

.rsa-prime-chart {
  width: 100%;
  min-width: 560px;
  height: 220px;
  display: block;
}

.rsa-prime-chart-axis {
  stroke: rgba(192, 213, 246, 0.76);
  stroke-width: 1.2;
}

.rsa-prime-chart-grid {
  stroke: rgba(192, 213, 246, 0.2);
  stroke-width: 1;
}

.rsa-prime-chart-line {
  fill: none;
  stroke: rgba(182, 218, 255, 0.95);
  stroke-width: 2;
}

.rsa-prime-chart-point {
  fill: rgba(168, 208, 255, 0.7);
}

.rsa-prime-chart-label {
  fill: rgba(192, 213, 246, 0.82);
  font: 500 12px/1.2 var(--font-mono);
}

.rsa-prime-chart-empty {
  fill: rgba(192, 213, 246, 0.76);
  font: 500 13px/1.2 var(--font-ui);
}

.rsa-prime-chart-note {
  margin: 0;
  color: rgba(198, 219, 250, 0.9);
  font-size: 0.8rem;
}

.rsa-prime-chart-meta {
  margin: 0;
  color: rgba(192, 213, 246, 0.84);
  font-size: 0.82rem;
}

.rsa-result-stack {
  display: grid;
  gap: 8px;
}

.rsa-flow-block {
  display: grid;
  gap: 8px;
  padding: 6px 0;
}

.rsa-flow-block + .rsa-flow-block {
  border-top: 1px solid rgba(113, 143, 194, 0.2);
  padding-top: 10px;
}

.rsa-flow-block h6 {
  margin: 0;
  color: rgba(228, 238, 255, 0.95);
  font-size: 0.9rem;
}

.rsa-flow-note {
  margin: 0;
  color: rgba(191, 211, 239, 0.82);
  font-size: 0.82rem;
}

.rsa-result-item {
  border: 1px solid rgba(113, 143, 194, 0.24);
  border-radius: 10px;
  padding: 8px 10px;
  background: rgba(3, 10, 22, 0.82);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.rsa-result-item span {
  color: rgba(189, 208, 236, 0.85);
  font-size: 0.86rem;
}

.rsa-result-item strong {
  display: block;
  max-width: min(100%, 34ch);
  font-family: var(--font-mono);
  color: #f0f6ff;
  word-break: break-word;
  text-align: right;
}

.rsa-key-split {
  display: grid;
  gap: 10px;
}

.rsa-key-block {
  border-radius: 11px;
  padding: 10px;
  border: 1px solid rgba(129, 158, 205, 0.28);
  background: rgba(4, 11, 24, 0.86);
  display: grid;
  gap: 4px;
}

.rsa-key-block span {
  font-size: 0.83rem;
  letter-spacing: 0.01em;
  color: rgba(196, 214, 240, 0.86);
}

.rsa-key-block strong {
  display: block;
  max-width: min(100%, 34ch);
  font-family: var(--font-mono);
  color: #f4f8ff;
  word-break: break-word;
}

.rsa-key-block--public {
  border-color: rgba(84, 160, 255, 0.45);
}

.rsa-key-block--private {
  border-color: rgba(218, 156, 255, 0.4);
}

@media (max-width: 1024px) {
  .rsa-panel-grid {
    grid-template-columns: 1fr;
  }
}

/* ===========================
   Werkzeuge: Sequenzdiagramm-Modellierer
=========================== */

.sequence-tool-shell {
  padding: 22px;
  font-size: 1.03rem;
}

.sequence-didactic-note {
  margin: 8px 0 0;
  color: rgba(218, 230, 252, 0.9);
  font-size: 0.99rem;
  line-height: 1.55;
}

.sequence-layout {
  display: grid;
  gap: 16px;
  align-items: stretch;
}

.sequence-row {
  display: grid;
  gap: 16px;
}

.sequence-row--top,
.sequence-row--bottom {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sequence-card {
  background: rgba(5, 14, 28, 0.84);
  border: 1px solid rgba(116, 151, 211, 0.28);
  border-radius: 12px;
  padding: 14px;
  display: grid;
  gap: 11px;
  min-width: 0;
}

.sequence-card h5 {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.35;
}

.sequence-inline-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.sequence-list {
  display: grid;
  gap: 10px;
}

.sequence-list-row {
  display: grid;
  gap: 10px;
  align-items: start;
  grid-template-columns: minmax(0, 1fr) auto;
  min-width: 0;
}

.sequence-list-row--dense {
  grid-template-columns: minmax(0, 1fr);
}

.sequence-row-text {
  color: #e8f1ff;
  font-size: 0.98rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.sequence-row-actions {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}

.sequence-card--messages {
  gap: 14px;
}

.sequence-list--messages .sequence-list-row {
  padding: 10px 12px;
  border: 1px solid rgba(126, 162, 220, 0.24);
  border-radius: 10px;
  background: rgba(7, 19, 37, 0.62);
}

.sequence-fragment-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sequence-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.96rem;
  color: #d8e7ff;
}

.sequence-export-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.sequence-stage {
  min-height: 680px;
  background: rgba(5, 12, 24, 0.92);
  border: 1px solid rgba(114, 153, 215, 0.3);
  border-radius: 14px;
  padding: 14px;
  display: grid;
  gap: 10px;
  align-content: start;
}

.sequence-canvas {
  width: 100%;
  min-height: 610px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(6, 17, 34, 0.96), rgba(3, 9, 20, 0.96));
}

.sequence-participant-box {
  fill: rgba(13, 30, 58, 0.95);
  stroke: rgba(147, 188, 244, 0.7);
  stroke-width: 1.2;
}

.sequence-participant-label {
  fill: #f2f7ff;
  font-size: 15px;
  font-weight: 600;
}

.sequence-lifeline {
  stroke: rgba(154, 189, 241, 0.72);
  stroke-width: 1.4;
  stroke-dasharray: 7 6;
}

.sequence-message-line {
  stroke: #d8e5ff;
  stroke-width: 1.6;
}

.sequence-message-line.is-async {
  stroke: #8fd3ff;
}

.sequence-message-line.is-return {
  stroke: #ffd38f;
  stroke-dasharray: 6 4;
}

.sequence-message-label {
  fill: #eaf2ff;
  font-size: 14px;
}

.sequence-activation {
  fill: rgba(129, 187, 255, 0.35);
  stroke: rgba(169, 210, 255, 0.7);
}

.sequence-fragment {
  fill: rgba(93, 120, 170, 0.04);
  stroke: rgba(170, 196, 238, 0.52);
  stroke-width: 1;
  stroke-dasharray: 7 5;
}

.sequence-fragment-tag {
  fill: rgba(121, 159, 223, 0.13);
  stroke: rgba(170, 196, 238, 0.58);
}

.sequence-fragment-tag-label,
.sequence-fragment-label {
  fill: #d4e4ff;
  font-size: 12px;
}

.sequence-fragment-divider {
  stroke: rgba(170, 196, 238, 0.44);
  stroke-width: 1;
  stroke-dasharray: 4 5;
}

.sequence-phase-band {
  stroke: none;
}

.sequence-phase-band.is-asymmetric {
  fill: rgba(133, 180, 255, 0.07);
}

.sequence-phase-band.is-symmetric {
  fill: rgba(113, 218, 170, 0.06);
}

.sequence-phase-note {
  fill: rgba(8, 20, 40, 0.78);
  stroke: rgba(160, 190, 235, 0.34);
}

.sequence-phase-note-text {
  fill: #d6e7ff;
  font-size: 13px;
}

.sequence-stage-linkout {
  margin: 0;
  font-size: 0.93rem;
  color: rgba(212, 228, 252, 0.92);
}

.sequence-stage-linkout a {
  color: #a9cbff;
  text-decoration: underline;
}

@media (max-width: 1120px) {
  .sequence-row--top,
  .sequence-row--bottom {
    grid-template-columns: 1fr;
  }

  .sequence-list-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .sequence-stage {
    min-height: 560px;
  }

  .sequence-canvas {
    min-height: 500px;
  }
}

@media (max-width: 720px) {
  .sequence-row-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .sequence-row-actions .ui-button {
    flex: 1 1 128px;
  }
}

/* Graphen-Werkzeug */
.graph-tool-shell {
  margin-top: var(--space-4);
}

.graph-layout-stack {
  display: grid;
  gap: var(--space-4);
}

.graph-control-stack,
.graph-output-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.graph-output-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.graph-panel {
  background: rgba(10, 16, 30, 0.82);
  border: 1px solid rgba(136, 160, 210, 0.24);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.graph-panel h5 {
  margin: 0 0 var(--space-3);
}

.graph-form-grid {
  display: grid;
  gap: var(--space-3);
}

.graph-panel--algorithm {
  border-color: rgba(155, 183, 236, 0.34);
  background: linear-gradient(180deg, rgba(8, 18, 38, 0.9) 0%, rgba(8, 15, 32, 0.85) 100%);
}

.graph-panel-intro {
  margin: 0;
  color: rgba(208, 224, 248, 0.9);
}

.graph-edit-group {
  display: grid;
  gap: var(--space-3);
}

.graph-edit-group h6 {
  margin: 0;
  font-size: 0.95rem;
  color: rgba(214, 228, 248, 0.9);
}

.graph-inline-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.graph-check {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--text);
}

.graph-edge-form {
  border-top: 1px solid var(--line);
  padding-top: var(--space-3);
}

.graph-state-box {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(7, 12, 24, 0.7);
  padding: 10px 12px;
}

.graph-state-box p {
  margin: 0 0 6px;
}

.graph-state-box p:last-child {
  margin-bottom: 0;
}

.graph-canvas-panel svg {
  width: 100%;
  height: auto;
  min-height: 360px;
  border: 1px solid rgba(152, 173, 217, 0.26);
  border-radius: var(--radius-sm);
  background: radial-gradient(circle at top, rgba(28, 40, 70, 0.35), rgba(8, 12, 22, 0.9));
}

.graph-canvas-hint {
  margin: 8px 0 0;
  color: var(--muted);
}

.graph-edge-line {
  stroke-width: 2;
}

.graph-edge-weight {
  fill: #e6eef9;
  font-size: 13px;
}

.graph-node-circle {
  fill: #0f1d33;
  stroke: #9ab0d7;
  stroke-width: 2;
  transition: fill 0.2s ease, stroke 0.2s ease;
}

.graph-node-circle.is-selected {
  stroke: #f7d37a;
}

.graph-node-circle.is-visited {
  fill: #1e4b3a;
  stroke: #74d8aa;
}

.graph-node-label {
  fill: #f7faff;
  font-size: 14px;
  font-weight: 700;
  pointer-events: none;
}

.graph-scroll-box {
  max-height: 240px;
  overflow: auto;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(6, 11, 20, 0.72);
  padding: 10px;
}

.graph-matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.graph-matrix-table th,
.graph-matrix-table td {
  border: 1px solid rgba(148, 171, 214, 0.3);
  padding: 4px 7px;
  text-align: center;
}

.graph-matrix-table th {
  background: rgba(22, 33, 57, 0.84);
}

@media (max-width: 1100px) {
  .graph-output-row {
    grid-template-columns: 1fr;
  }
}

/* Wissensnetz */
.knowledge-net-page .main {
  padding-bottom: 24px;
}

.knowledge-net-page__shell {
  display: grid;
  gap: 16px;
}

.knowledge-net-page__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
}

.knowledge-net-page__subtitle {
  margin-top: 8px;
  color: rgba(244, 246, 255, 0.86);
}

.knowledge-net-page__tool {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.knowledge-net-page__tool-actions {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.chapter-knowledge-net {
  margin-top: 8px;
  display: grid;
  gap: 10px;
}

.knowledge-net-module-slot {
  display: block;
  width: 100%;
  max-width: var(--content-reading-max);
  margin-inline: auto;
  min-height: 280px;
  contain: layout;
}

.knowledge-net-module-slot:empty {
  position: relative;
}

.knowledge-net-module-slot:empty::before {
  content: "";
  display: block;
  min-height: inherit;
}

.chapter-knowledge-net__intro {
  margin: 0;
  color: rgba(224, 234, 251, 0.86);
}

.chapter-knowledge-net__viewer .knowledge-net-page__tool--embedded,
.chapter-knowledge-net__tool {
  padding: 0;
  gap: 10px;
}

.chapter-knowledge-net__viewer .knowledge-net-page__workspace--embedded {
  min-height: 0;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.chapter-knowledge-net__viewer .knowledge-net-page__graph {
  min-height: var(--knowledge-net-active-height);
  border-color: rgba(176, 200, 248, 0.18);
  background: rgba(10, 18, 34, 0.5);
  box-shadow: none;
}

.chapter-knowledge-net__viewer.knowledge-net--idle .knowledge-net-page__graph {
  min-height: var(--knowledge-net-compact-height);
}

.chapter-knowledge-net__context-overlay {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 9;
  max-width: min(460px, calc(100% - 28px));
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(9, 14, 27, 0.46);
  border: 1px solid rgba(165, 188, 232, 0.22);
  backdrop-filter: blur(2px);
  pointer-events: auto;
  display: grid;
  gap: 4px;
}

.chapter-knowledge-net__context-overlay h3,
.chapter-knowledge-net__context-overlay p {
  margin: 0;
}

.chapter-knowledge-net__context-overlay h3 {
  font-size: 0.93rem;
  line-height: 1.25;
  color: rgba(242, 247, 255, 0.92);
}

.chapter-knowledge-net__context-overlay p {
  font-size: 0.8rem;
  line-height: 1.34;
  color: rgba(220, 233, 252, 0.88);
}

.chapter-knowledge-net__context-overlay #knowledge-net-focus-relations {
  display: none;
}

.chapter-knowledge-net__context-overlay.knowledge-net-context-panel--collapsed {
  max-width: min(350px, calc(100% - 28px));
  padding: 7px 10px;
}

.chapter-knowledge-net__context-overlay.knowledge-net-context-panel--collapsed #knowledge-net-focus-description,
.chapter-knowledge-net__context-overlay.knowledge-net-context-panel--collapsed #knowledge-net-focus-relations {
  display: none;
}

.chapter-knowledge-net__viewer .knowledge-net-page__relations {
  margin-top: 0;
}

.chapter-knowledge-net__viewer.knowledge-net--compact-controls .knowledge-net-page__controls {
  display: none;
}

.chapter-knowledge-net__viewer .knowledge-net-controls-toggle[hidden],
.chapter-knowledge-net__viewer #knowledge-net-fullscreen-toggle[hidden] {
  display: none !important;
}

.knowledge-net-controls-toggle {
  justify-self: auto;
}

.knowledge-net-page__controls {
  display: grid;
  grid-template-columns: minmax(190px, 0.8fr) minmax(250px, 1.3fr) minmax(210px, 1fr);
  gap: 10px 12px;
  align-items: end;
  padding: 4px 2px 12px;
  border-bottom: 1px solid rgba(166, 187, 230, 0.18);
}

.knowledge-net-page__controls.is-collapsed {
  display: none;
}

.knowledge-net-control {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.knowledge-net-view-mode {
  display: inline-flex;
  gap: 8px;
}

.knowledge-net-view-mode .ui-button.is-active {
  border-color: rgba(173, 210, 255, 0.94);
  background: rgba(110, 152, 224, 0.28);
  box-shadow: inset 0 0 0 1px rgba(214, 231, 255, 0.28);
}

.knowledge-net-view-reset {
  justify-self: start;
  display: none;
}

.knowledge-net-page[data-view-mode="3d"] .knowledge-net-view-reset {
  display: inline-flex;
}

.knowledge-net-page__controls label {
  font-size: 0.84rem;
  color: rgba(233, 240, 255, 0.82);
}

.knowledge-net-control__label {
  font-size: 0.84rem;
  color: rgba(233, 240, 255, 0.82);
}

.knowledge-net-control--toggle {
  align-self: center;
}

.knowledge-net-control--camera-tour {
  grid-column: 1 / -1;
  align-items: center;
  grid-template-columns: minmax(180px, 280px) minmax(260px, 1fr);
  column-gap: 12px;
}

.knowledge-net-control--camera-tour > label {
  margin-bottom: 0;
}

.knowledge-net-camera-tour-actions {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}

.knowledge-net-control--lock-row {
  grid-column: 1 / -1;
  align-items: center;
}

.knowledge-net-lock-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
}

.knowledge-net-toggle-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: rgba(228, 237, 255, 0.92);
  font-size: 0.9rem;
  cursor: pointer;
}

.knowledge-net-page__hint {
  grid-column: 1 / -1;
  margin: 0;
  color: rgba(215, 228, 255, 0.76);
  font-size: 0.84rem;
}

[data-knowledge-net] {
  --knowledge-net-compact-height: 220px;
  --knowledge-net-active-height: 560px;
}

.knowledge-net-page__workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 350px);
  gap: 12px;
  min-height: var(--knowledge-net-active-height);
}

.knowledge-net--idle .knowledge-net-page__workspace {
  min-height: var(--knowledge-net-compact-height);
}

.knowledge-net--main.knowledge-net--ready .knowledge-net-page__workspace,
.knowledge-net--main.knowledge-net--ready .knowledge-net-page__graph {
  min-height: var(--knowledge-net-main-height, var(--knowledge-net-active-height));
}

.knowledge-net-page__graph,

.knowledge-net-focus-overlay-active .knowledge-net-page__workspace {
  grid-template-columns: minmax(0, 1fr);
}

.knowledge-net-focus-overlay {
  position: absolute;
  right: 18px;
  bottom: 18px;
  top: auto;
  left: auto;
  z-index: 9;
  width: min(420px, calc(100% - 28px));
  margin: 0;
  border-radius: 12px;
  border: 1px solid rgba(165, 188, 232, 0.24);
  background: rgba(8, 14, 27, 0.66);
  box-shadow: 0 16px 34px rgba(2, 6, 14, 0.42);
  backdrop-filter: blur(4px);
}

.knowledge-net-focus-overlay.knowledge-net-page__panel {
  min-height: auto;
}

.knowledge-net-focus-overlay .knowledge-net-page__panel-body {
  max-height: min(44vh, 320px);
  overflow: auto;
}

.knowledge-net-focus-overlay.knowledge-net-context-panel--collapsed {
  width: min(340px, calc(100% - 28px));
}

.knowledge-net-focus-overlay.knowledge-net-context-panel--collapsed .knowledge-net-page__panel-body {
  min-height: 0;
  grid-template-rows: auto;
  max-height: none;
}

.knowledge-net-focus-overlay.knowledge-net-context-panel--collapsed #knowledge-net-focus-description,
.knowledge-net-focus-overlay.knowledge-net-context-panel--collapsed #knowledge-net-focus-relations {
  display: none;
}

.knowledge-net-page__panel {
  min-height: 100%;
}

.knowledge-net-page__graph {
  position: relative;
  border: 1px solid rgba(176, 200, 248, 0.24);
  border-radius: 14px;
  padding: 10px;
  background: linear-gradient(158deg, rgba(12, 21, 40, 0.82), rgba(8, 14, 28, 0.9));
  box-shadow: inset 0 1px 0 rgba(232, 240, 255, 0.14), 0 12px 30px rgba(5, 10, 20, 0.34);
}

.knowledge-net-viewer-stack {
  position: relative;
  min-height: 100%;
  height: 100%;
}

.knowledge-net-graph-overlays {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  pointer-events: none;
  z-index: 8;
}

.knowledge-net-graph-overlays--left {
  justify-content: flex-start;
  align-items: flex-start;
  gap: 8px;
}

.knowledge-net-graph-control {
  position: relative;
  top: 0;
  left: 0;
  z-index: 1;
  pointer-events: auto;
}

.knowledge-net-graph-control.is-active {
  border-color: rgba(173, 210, 255, 0.94);
  background: rgba(110, 152, 224, 0.28);
}

.knowledge-net-zoom-controls {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  pointer-events: auto;
  padding: 2px 6px;
  border-radius: 999px;
  border: 1px solid rgba(167, 191, 236, 0.28);
  background: rgba(7, 13, 26, 0.72);
  backdrop-filter: blur(4px);
}

.knowledge-net-zoom-value {
  min-width: 52px;
  text-align: center;
  font-size: 0.78rem;
  color: rgba(237, 243, 255, 0.9);
}

#knowledge-net-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: var(--knowledge-net-active-height);
  cursor: grab;
  background:
    linear-gradient(to right, rgba(116, 151, 218, 0.15) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(116, 151, 218, 0.13) 1px, transparent 1px),
    radial-gradient(circle at 50% 32%, rgba(38, 58, 94, 0.4), rgba(8, 14, 28, 0.82));
  background-size: 32px 32px, 32px 32px, cover;
  border-radius: 10px;
}

#knowledge-net-canvas.is-panning {
  cursor: grabbing;
}

.knowledge-net-canvas-3d {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: var(--knowledge-net-active-height);
  border-radius: 10px;
  overflow: hidden;
  display: none;
  background: radial-gradient(circle at 50% 32%, rgba(38, 58, 94, 0.35), rgba(8, 14, 28, 0.9));
}

.knowledge-net-canvas-3d__edge-focus-overlay {
  position: absolute;
  inset: 0;
  z-index: 6;
  pointer-events: none;
}

.knowledge-net--idle #knowledge-net-canvas,
.knowledge-net--idle .knowledge-net-canvas-3d {
  min-height: var(--knowledge-net-compact-height);
}

.knowledge-net-activation {
  --knowledge-net-activation-icon-size: clamp(64px, 12vw, 84px);
  --knowledge-net-activation-label-offset: 6px;
  position: absolute;
  inset: 10px;
  z-index: 7;
  border: 1px solid rgba(176, 206, 248, 0.34);
  border-radius: 10px;
  background: linear-gradient(168deg, rgba(10, 18, 35, 0.58), rgba(8, 13, 24, 0.72));
  color: rgba(238, 244, 255, 0.95);
  display: grid;
  place-items: center;
  gap: 16px;
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, opacity 160ms ease;
}

.knowledge-net-activation:hover,
.knowledge-net-activation:focus-visible {
  border-color: rgba(201, 223, 255, 0.76);
  background: linear-gradient(168deg, rgba(12, 23, 42, 0.72), rgba(8, 15, 29, 0.84));
}

.knowledge-net-activation:focus-visible {
  outline: 2px solid rgba(192, 218, 255, 0.78);
  outline-offset: 2px;
}

.knowledge-net-activation.is-initializing {
  cursor: progress;
}

.knowledge-net-activation.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.knowledge-net-activation__icon {
  width: var(--knowledge-net-activation-icon-size);
  height: var(--knowledge-net-activation-icon-size);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.knowledge-net-activation__icon img,
.knowledge-net-activation__icon svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.knowledge-net-activation__label {
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(242, 247, 255, 0.88);
  margin-top: var(--knowledge-net-activation-label-offset);
}

.chapter-knowledge-net__viewer .knowledge-net-activation {
  --knowledge-net-activation-icon-size: clamp(52px, 18vw, 72px);
  --knowledge-net-activation-label-offset: 4px;
}

.knowledge-net-edge {
  stroke: rgba(208, 224, 255, 0.74);
  stroke-width: 1.1;
}

.knowledge-net-cluster-shell {
  stroke: rgba(172, 198, 255, 0.32);
  stroke-width: 1.1;
  pointer-events: visiblePainted;
}

.knowledge-net-cluster-title {
  fill: rgba(219, 232, 255, 0.84);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  paint-order: stroke;
  stroke: rgba(7, 13, 27, 0.62);
  stroke-width: 2.2px;
}

.knowledge-net-edge--mid {
  stroke: rgba(160, 188, 255, 0.72);
  stroke-width: 1.8;
}

.knowledge-net-edge--strong {
  stroke: rgba(209, 225, 255, 0.92);
  stroke-width: 2.2;
}

.knowledge-net-edge--salient {
  stroke: rgba(227, 238, 255, 0.96);
  stroke-width: 2.45;
}

.knowledge-net-edge-focus-label {
  pointer-events: none;
}

.knowledge-net-edge-focus-label--3d {
  position: absolute;
  transform: translate(-50%, -50%);
  transform-origin: center center;
  white-space: nowrap;
  z-index: 2;
}

.knowledge-net-edge-focus-label--3d .knowledge-net-edge-focus-label__text {
  display: block;
  font-size: 10.8px;
  line-height: 1;
  color: rgba(242, 248, 255, 0.98);
  letter-spacing: 0.008em;
  font-weight: 600;
  text-shadow:
    0 0 1px rgba(2, 6, 14, 0.99),
    0 0 3px rgba(5, 10, 20, 0.92),
    0 1px 6px rgba(5, 9, 17, 0.76);
}

.knowledge-net-edge-focus-label__text {
  fill: rgba(238, 246, 255, 0.98);
  font-weight: 580;
  letter-spacing: 0.008em;
  paint-order: stroke;
  stroke: rgba(8, 14, 28, 0.88);
  stroke-width: 2.1px;
  stroke-linejoin: round;
}

.knowledge-net-node circle {
  stroke-width: 1.15;
  cursor: pointer;
  filter: url(#knowledge-net-node-shadow);
}

.knowledge-net-node.is-focused circle {
  stroke-width: 1.7;
}

.knowledge-net-node-label {
  fill: rgba(236, 242, 255, 0.9);
  font-size: 11.5px;
  font-weight: 600;
  paint-order: stroke;
  stroke: rgba(8, 14, 28, 0.65);
  stroke-width: 2px;
  stroke-linejoin: round;
  pointer-events: none;
}

.knowledge-net-node-label-highlight {
  fill: rgba(52, 146, 100, 0.34);
  stroke: rgba(75, 187, 131, 0.96);
  stroke-width: 1.4;
  pointer-events: none;
}

.knowledge-net-node-label.is-active {
  fill: #e9fff4;
  stroke: rgba(8, 21, 14, 0.72);
  stroke-width: 2.4px;
  font-weight: 700;
}

.knowledge-net-page__panel {
  margin: 0;
  padding: 0;
  border-color: rgba(176, 201, 247, 0.25);
  background: linear-gradient(170deg, rgba(12, 20, 37, 0.82), rgba(10, 16, 29, 0.88));
  align-self: start;
  position: sticky;
  top: calc(var(--mobile-topbar-height, 68px) + 12px);
  overflow: hidden;
}

.knowledge-net-page__panel-body {
  display: grid;
  gap: 10px;
  padding: 14px 14px 16px;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  min-height: min(68vh, 760px);
}

.knowledge-net-page__panel-body > :first-child {
  margin-top: 0;
}

.knowledge-net-page__panel-body > :last-child {
  margin-bottom: 0;
}

#knowledge-net-focus-relations {
  min-height: 0;
  display: grid;
  gap: 8px;
  align-content: start;
}

.knowledge-net-page__relations {
  margin: 12px 0 0;
  border-color: rgba(176, 201, 247, 0.24);
  background: linear-gradient(170deg, rgba(12, 20, 37, 0.8), rgba(9, 16, 29, 0.9));
}

.knowledge-net-page__relations-title {
  margin: 0;
}

.knowledge-net-page__relations-meta {
  margin: 6px 0 10px;
  color: rgba(205, 223, 255, 0.88);
  font-size: 0.88rem;
}

.knowledge-net-panel-subtitle {
  margin: 14px 0 6px;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  color: rgba(220, 231, 255, 0.88);
}

.knowledge-net-core-terms {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid rgba(170, 197, 255, 0.2);
  border-radius: 10px;
  background: rgba(14, 22, 37, 0.32);
}

.knowledge-net-core-terms .knowledge-net-panel-subtitle {
  margin-top: 0;
}

.knowledge-net-core-terms__select-wrap {
  margin-bottom: 10px;
}

.knowledge-net-core-terms__select-label {
  display: grid;
  gap: 4px;
  font-size: 0.82rem;
  color: rgba(205, 222, 255, 0.86);
}

.knowledge-net-core-terms__select {
  width: 100%;
}

.knowledge-net-core-terms__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.knowledge-net-core-terms__list li {
  display: grid;
  gap: 2px;
}

.knowledge-net-core-terms__link {
  font-weight: 600;
}

.knowledge-net-core-terms__meta {
  font-size: 0.75rem;
  color: rgba(190, 210, 249, 0.84);
}

.knowledge-net-core-terms__summary {
  margin: 10px 0 0;
  font-size: 0.76rem;
  color: rgba(184, 205, 245, 0.82);
}

.knowledge-net-relations-accordion {
  margin-top: 0;
  border: 1px solid rgba(170, 197, 255, 0.22);
  border-radius: 10px;
  background: rgba(14, 22, 37, 0.36);
  overflow: hidden;
}

.knowledge-net-relations-accordion__summary {
  cursor: pointer;
  list-style: none;
  padding: 10px 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(228, 237, 255, 0.92);
}

.knowledge-net-relations-accordion__summary::-webkit-details-marker {
  display: none;
}

.knowledge-net-relations-accordion__summary::before {
  content: '▸';
  display: inline-block;
  margin-right: 8px;
  color: rgba(196, 216, 255, 0.9);
  transition: transform 0.18s ease;
}

.knowledge-net-relations-accordion[open] .knowledge-net-relations-accordion__summary::before {
  transform: rotate(90deg);
}

.knowledge-net-relations-accordion__summary:hover {
  background: rgba(126, 162, 236, 0.12);
}

.knowledge-net-relations-table-wrap {
  border-top: 1px solid rgba(170, 197, 255, 0.2);
  max-height: 280px;
  overflow: auto;
}

.knowledge-net-relations-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.knowledge-net-relations-table th,
.knowledge-net-relations-table td {
  padding: 8px 10px;
  text-align: left;
  vertical-align: middle;
}

.knowledge-net-relations-table th {
  position: sticky;
  top: 0;
  background: rgba(20, 30, 48, 0.98);
  z-index: 1;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: rgba(195, 214, 251, 0.82);
}

.knowledge-net-relations-table tbody tr {
  border-top: 1px solid rgba(160, 186, 243, 0.16);
}

.knowledge-net-relations-table tbody tr:nth-child(even) {
  background: rgba(113, 142, 207, 0.06);
}

.knowledge-net-relations-table tbody tr:hover {
  background: rgba(141, 175, 244, 0.14);
}

.knowledge-net-relations-table__type {
  color: rgba(214, 228, 255, 0.88);
}

.knowledge-net-relations-table__order {
  width: 56px;
  font-variant-numeric: tabular-nums;
  color: rgba(206, 223, 255, 0.86);
}

.knowledge-net-relations-table__source,
.knowledge-net-relations-table__target {
  min-width: 140px;
}

.knowledge-net-relation-target {
  border: 0;
  padding: 0;
  background: none;
  color: rgba(222, 234, 255, 0.94);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.knowledge-net-relation-target:hover {
  color: rgba(246, 251, 255, 0.98);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.knowledge-net-relations-table__weight {
  min-width: 124px;
  color: rgba(211, 226, 255, 0.94);
}

.knowledge-net-relations-table__weight-value {
  display: inline-block;
  min-width: 40px;
  margin-right: 8px;
  font-variant-numeric: tabular-nums;
}

.knowledge-net-relations-table__weight-track {
  display: inline-flex;
  width: 64px;
  height: 5px;
  border-radius: 999px;
  background: rgba(154, 177, 230, 0.28);
  vertical-align: middle;
  overflow: hidden;
}

.knowledge-net-relations-table__weight-bar {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: rgba(214, 232, 255, 0.88);
}

.knowledge-net-relations-table__importance {
  min-width: 132px;
  white-space: nowrap;
  color: rgba(223, 235, 255, 0.94);
}

.knowledge-net-relations-table__importance-value {
  display: inline-block;
  min-width: 40px;
  margin-right: 8px;
  font-variant-numeric: tabular-nums;
}

.knowledge-net-relations-table__badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 8px;
  border-radius: 999px;
  border: 1px solid rgba(188, 209, 252, 0.3);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
}

.knowledge-net-relations-table__badge--normal {
  background: rgba(112, 139, 196, 0.18);
  color: rgba(204, 222, 255, 0.86);
}

.knowledge-net-relations-table__badge--strong {
  background: rgba(130, 164, 225, 0.2);
  color: rgba(220, 236, 255, 0.94);
}

.knowledge-net-relations-table__badge--salient {
  background: rgba(166, 195, 245, 0.24);
  color: rgba(237, 245, 255, 0.98);
  border-color: rgba(205, 224, 255, 0.44);
}

.knowledge-net-relations-table__direction {
  min-width: 112px;
  white-space: nowrap;
  color: rgba(213, 228, 255, 0.9);
}

.knowledge-net-cluster-legend {
  list-style: none;
  margin: 6px 0 4px;
  padding: 0;
  display: grid;
  gap: 6px;
}

.knowledge-net-cluster-legend__item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(228, 237, 255, 0.92);
}

.knowledge-net-legend-marker {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  box-shadow: 0 0 0 1px rgba(7, 13, 27, 0.55), inset 0 0 0 1px rgba(244, 248, 255, 0.22);
}

.knowledge-net-legend-scroll {
  max-height: clamp(140px, 34vh, 420px);
  overflow-y: auto;
  padding-right: 4px;
}

.knowledge-net-legend-scroll::-webkit-scrollbar {
  width: 8px;
}

.knowledge-net-legend-scroll::-webkit-scrollbar-thumb {
  background: rgba(167, 194, 248, 0.35);
  border-radius: 999px;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen {
  overflow: hidden;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .sidebar.rail,
body.knowledge-net-page.knowledge-net-viewer-fullscreen [data-sidebar-mount] {
  display: none !important;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .site-shell {
  --sidebar-width: 0px;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__header,
body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__relations {
  display: none;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-controls-toggle {
  position: absolute;
  top: auto;
  bottom: 14px;
  left: 14px;
  z-index: 15;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__controls {
  position: absolute;
  top: auto;
  bottom: 58px;
  left: 14px;
  right: auto;
  z-index: 14;
  width: min(760px, calc(100vw - 28px));
  max-height: calc(100vh - 132px);
  overflow: auto;
  padding: 10px;
  border: 1px solid rgba(166, 187, 230, 0.24);
  border-radius: 10px;
  background: rgba(10, 17, 31, 0.92);
  backdrop-filter: blur(6px);
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__controls.is-collapsed {
  display: none;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .main {
  padding: 0;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__shell,
body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__tool {
  gap: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__workspace {
  grid-template-columns: 1fr;
  min-height: 100vh;
  height: 100vh;
  gap: 0;
  position: relative;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__graph {
  border-radius: 0;
  border: 0;
  padding: 0;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-graph-overlays {
  z-index: 14;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen #knowledge-net-canvas,
body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-canvas-3d {
  min-height: 100vh;
  border-radius: 0;
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__panel {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 6;
  width: min(360px, calc(100vw - 28px));
  max-height: calc(100vh - 28px);
}

body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-focus-overlay {
  top: auto;
  right: 18px;
  bottom: 18px;
}

@media (max-width: 1180px) {
  .knowledge-net-page__controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .knowledge-net-page__workspace {
    grid-template-columns: 1fr;
  }

  .knowledge-net-page__panel {
    position: static;
  }

  body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__panel {
    position: absolute;
  }

  .chapter-knowledge-net__context-overlay {
    max-width: min(360px, calc(100% - 20px));
    right: 10px;
    bottom: 10px;
    padding: 7px 8px;
  }
}


@media (max-width: 760px) {
  .knowledge-net-page__controls {
    grid-template-columns: 1fr;
  }

  .knowledge-net-page__hint {
    font-size: 0.8rem;
  }

  #knowledge-net-canvas {
    min-height: 480px;
  }
}

@media (min-width: 1200px) {
  body.knowledge-net-page .site-shell {
    --sidebar-width: 56px;
  }

  body.knowledge-net-page .sidebar.rail {
    opacity: 0.7;
    transition: opacity 0.2s ease;
  }

  body.knowledge-net-page .sidebar.rail:hover {
    opacity: 1;
  }

  body.knowledge-net-page .main {
    padding: 10px 10px 14px;
  }

  .knowledge-net-page__header {
    padding: 10px 12px;
    align-items: center;
  }

  .knowledge-net-page__header .eyebrow {
    font-size: 0.73rem;
    margin-bottom: 4px;
  }

  .knowledge-net-page__header :is(h1, h2) {
    margin: 0;
    font-size: 1.15rem;
  }

  .knowledge-net-page__subtitle {
    margin-top: 4px;
    font-size: 0.86rem;
    max-width: 76ch;
  }

  .knowledge-net-page__tool {
    padding: 12px;
    gap: 10px;
  }

  .knowledge-net-page__controls {
    grid-template-columns: minmax(180px, 0.8fr) minmax(230px, 1.2fr) minmax(220px, 1fr);
    padding: 2px 0 10px;
  }

  .knowledge-net-page__workspace {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
    min-height: 600px;
    gap: 10px;
  }

  .knowledge-net--main .knowledge-net-page__workspace {
    min-height: clamp(600px, calc(100vh - 170px), 760px);
  }

  #knowledge-net-canvas {
    min-height: 600px;
  }

  .knowledge-net--main #knowledge-net-canvas {
    min-height: clamp(600px, calc(100vh - 195px), 760px);
  }

  .knowledge-net-page__panel {
    top: 8px;
    max-height: calc(100vh - 20px);
  }

  .knowledge-net-page__panel-body {
    max-height: calc(100vh - 20px);
    overflow: hidden;
  }
}

@media (max-width: 760px) {
  .knowledge-net-graph-overlays {
    top: 10px;
    left: 10px;
    right: 10px;
  }

  .knowledge-net-graph-control {
    top: 0;
    left: 0;
  }

  .knowledge-net-legend-scroll {
    max-height: min(34vh, 280px);
  }

  body.knowledge-net-page.knowledge-net-viewer-fullscreen .knowledge-net-page__panel {
    width: min(350px, calc(100vw - 20px));
    top: 10px;
    right: 10px;
    max-height: calc(100vh - 20px);
  }
}

/* ===========================
   Werkzeug: Bäume / BST
=========================== */
.tree-tool-layout {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tree-control-panel,
.tree-canvas-panel,
.tree-info-panel {
  border: 1px solid rgba(168, 188, 225, 0.32);
  border-radius: 14px;
  padding: 14px;
  background: linear-gradient(165deg, rgba(15, 24, 41, 0.84), rgba(8, 14, 27, 0.76));
  box-shadow: inset 0 1px 0 rgba(245, 250, 255, 0.08), 0 18px 38px rgba(4, 9, 22, 0.32);
  backdrop-filter: blur(2px);
}

.tree-control-panel {
  padding: 10px 12px;
  background: linear-gradient(165deg, rgba(10, 19, 34, 0.66), rgba(7, 13, 25, 0.58));
  border-color: rgba(145, 170, 216, 0.22);
  box-shadow: inset 0 1px 0 rgba(245, 250, 255, 0.05), 0 10px 22px rgba(4, 9, 22, 0.26);
}

.tree-control-groups {
  display: block;
}

.tree-accordion-item {
  border: 1px solid rgba(156, 180, 221, 0.3);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(10, 19, 35, 0.72), rgba(8, 16, 30, 0.64));
  box-shadow: inset 0 1px 0 rgba(240, 246, 255, 0.08), 0 10px 20px rgba(2, 6, 16, 0.24);
}

.tree-accordion-toggle {
  width: 100%;
  border: 0;
  padding: 13px 14px;
  border-radius: 12px;
  background: transparent;
  color: #e8f0ff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 650;
  cursor: pointer;
  text-align: left;
}

.tree-accordion-toggle:hover,
.tree-accordion-toggle:focus-visible {
  background: rgba(28, 46, 73, 0.46);
}

.tree-accordion-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tree-accordion-title::before {
  content: "◌";
  color: rgba(141, 190, 255, 0.88);
  font-size: 0.82rem;
}

.tree-accordion-indicator {
  min-width: 18px;
  font-size: 1rem;
  line-height: 1;
  text-align: center;
  color: #bdd6ff;
  transition: transform 200ms ease, color 180ms ease;
}

.tree-accordion-panel {
  border-top: 1px solid rgba(134, 162, 209, 0.22);
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  visibility: hidden;
  transition: grid-template-rows 240ms ease, opacity 220ms ease;
}

.tree-accordion-panel-inner {
  min-height: 0;
  overflow: hidden;
  padding: 0 14px;
  display: grid;
  gap: 14px;
}

.tree-accordion-item.is-open .tree-accordion-panel {
  grid-template-rows: 1fr;
  opacity: 1;
  visibility: visible;
}

.tree-accordion-item.is-open .tree-accordion-panel-inner {
  padding: 12px 14px 16px;
}

.tree-accordion-item.is-open .tree-accordion-indicator {
  transform: rotate(-180deg);
  color: #d9e9ff;
}

.tree-settings-group {
  display: grid;
  gap: 8px;
}

.tree-settings-group h6 {
  margin: 0;
  color: #aecaef;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-weight: 600;
}

.tree-settings-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.tree-mode-inputs {
  display: grid;
  gap: 10px;
}

.tree-mode-inputs .ui-form-group[hidden] {
  display: none;
}

.tree-canvas-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(130, 157, 202, 0.28);
  border-radius: 10px;
  background: linear-gradient(170deg, rgba(12, 21, 37, 0.68), rgba(8, 15, 27, 0.58));
}

.tree-run-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 0;
}

.tree-canvas-panel {
  border-color: rgba(188, 206, 239, 0.34);
  box-shadow: inset 0 1px 0 rgba(245, 250, 255, 0.1), 0 20px 42px rgba(4, 9, 22, 0.36);
  padding: 16px;
}

.tree-speed-wrap {
  margin-bottom: 0;
  min-width: 180px;
}

.tree-canvas-status {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.tree-canvas-status h5 {
  margin: 0;
  color: #d7e4fb;
}

.tree-canvas-status p {
  margin: 0;
  color: #b9cae8;
  font-size: 0.92rem;
}

.tree-svg {
  width: 100%;
  min-height: 620px;
  border-radius: 12px;
  border: 1px solid rgba(122, 150, 198, 0.24);
  background: radial-gradient(circle at center, rgba(26, 42, 70, 0.18), rgba(6, 12, 23, 0.72));
}

.tree-step-text {
  margin: 10px 0 0;
  color: #d7e4fb;
}

.tree-info-panel h5 {
  margin: 0 0 10px;
  color: #dce9ff;
}

.tree-info-grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.tree-info-grid > div {
  border: 1px solid rgba(122, 150, 198, 0.22);
  border-radius: 10px;
  padding: 10px;
  background: linear-gradient(170deg, rgba(9, 19, 33, 0.78), rgba(7, 14, 25, 0.62));
}

.tree-info-grid > div:last-child {
  grid-column: 1 / -1;
}

.tree-info-grid dt {
  margin: 0 0 4px;
  color: #afc3e9;
  font-size: 0.82rem;
}

.tree-info-grid dd {
  margin: 0;
  color: #e8f0ff;
}

.tree-level-line {
  stroke: rgba(140, 166, 212, 0.2);
  stroke-width: 1;
  stroke-dasharray: 4 6;
}

.tree-edge {
  stroke: rgba(153, 178, 222, 0.56);
  stroke-width: 1.6;
}

.tree-edge.is-path {
  stroke: #8dc7ff;
  stroke-width: 2.6;
}

.tree-node {
  fill: rgba(20, 35, 58, 0.95);
  stroke: rgba(169, 190, 228, 0.85);
  stroke-width: 1.7;
}

.tree-node.is-root {
  stroke: #f8d38a;
  stroke-width: 2.3;
}

.tree-node.is-current {
  fill: rgba(44, 78, 126, 0.95);
  stroke: #9bcfff;
}

.tree-node.is-path {
  fill: rgba(30, 56, 88, 0.95);
}

.tree-node.is-found,
.tree-node.is-insert {
  fill: rgba(29, 103, 78, 0.94);
  stroke: #73f0bf;
}

.tree-node.is-delete {
  fill: rgba(115, 44, 44, 0.92);
  stroke: #ffafaf;
}

.tree-node.is-replacement {
  fill: rgba(115, 89, 34, 0.95);
  stroke: #ffd789;
}

.tree-node-label {
  fill: #f3f7ff;
  font-size: 0.9rem;
  font-weight: 700;
}

.tree-observation-list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: #dbe8ff;
}

.tree-output {
  margin-top: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: #d8e7ff;
  min-height: 24px;
  background: transparent;
}

@media (max-width: 1200px) {
  .tree-svg {
    min-height: 500px;
  }
}

@media (max-width: 900px) {
  .tree-settings-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .tree-canvas-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .tree-speed-wrap {
    min-width: 0;
  }

  .tree-info-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .tree-info-grid > div:last-child {
    grid-column: auto;
  }

  .tree-svg {
    min-height: 440px;
  }
}

/* ===========================
   Werkzeug: Lineare Datenstrukturen
=========================== */
.linear-tool-layout {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.linear-control-panel,
.linear-canvas-panel,
.linear-observation-panel {
  border: 1px solid rgba(122, 150, 198, 0.3);
  border-radius: 14px;
  padding: 14px;
  background: rgba(8, 18, 34, 0.76);
}

.linear-accordion-item {
  border: 1px solid rgba(122, 150, 198, 0.24);
  border-radius: 12px;
  background: rgba(9, 20, 36, 0.5);
}

.linear-accordion-toggle {
  width: 100%;
  border: 0;
  background: transparent;
  color: #eaf1ff;
  padding: 11px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font: inherit;
}

.linear-accordion-toggle:hover,
.linear-accordion-toggle:focus-visible {
  background: rgba(117, 167, 246, 0.14);
}

.linear-accordion-title {
  font-weight: 700;
  letter-spacing: 0.01em;
}

.linear-accordion-indicator {
  font-size: 1.2rem;
  line-height: 1;
  color: #9ec9ff;
}

.linear-accordion-panel {
  border-top: 1px solid rgba(122, 150, 198, 0.2);
  padding: 12px;
}

.linear-canvas-head h5,
.linear-observation-panel h5 {
  margin: 0 0 10px;
  color: #d7e4fb;
}

.linear-settings-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.linear-canvas-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.linear-canvas-head p {
  margin: 0;
  color: #b9cae8;
  font-size: 0.92rem;
}

.linear-input-row {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.linear-canvas-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
  border: 1px solid rgba(122, 150, 198, 0.24);
  border-radius: 12px;
  background: rgba(9, 20, 36, 0.54);
  padding: 10px;
}

.linear-speed-wrap {
  max-width: 280px;
  margin-left: auto;
}

.linear-svg {
  width: 100%;
  min-height: 560px;
  border-radius: 12px;
  border: 1px solid rgba(122, 150, 198, 0.24);
  background: radial-gradient(circle at center, rgba(26, 42, 70, 0.2), rgba(6, 12, 23, 0.72));
}

.linear-observation-grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.linear-observation-grid > div {
  border: 1px solid rgba(122, 150, 198, 0.22);
  border-radius: 10px;
  padding: 10px;
  background: rgba(8, 18, 32, 0.66);
}

.linear-observation-grid dt {
  margin: 0 0 4px;
  color: #afc3e9;
  font-size: 0.82rem;
}

.linear-observation-grid dd {
  margin: 0;
  color: #e8f0ff;
}

.linear-cell {
  fill: rgba(20, 35, 58, 0.95);
  stroke: rgba(169, 190, 228, 0.85);
  stroke-width: 1.7;
}

.linear-cell.is-current {
  fill: rgba(44, 78, 126, 0.95);
  stroke: #9bcfff;
}

.linear-cell.is-new {
  fill: rgba(29, 103, 78, 0.94);
  stroke: #73f0bf;
}

.linear-index-label {
  fill: #adc5eb;
  font-size: 0.84rem;
}

.linear-cell-text {
  fill: #f3f7ff;
  font-size: 1rem;
  font-weight: 700;
}

.linear-cell-subtext {
  fill: #d0def5;
  font-size: 0.9rem;
}

.linear-null-label {
  fill: #9db2d7;
  font-size: 0.86rem;
}

.linear-ref-arrow,
.linear-var-arrow {
  stroke: #9ec9ff;
  stroke-width: 2;
}

.linear-var-label {
  fill: #f8d38a;
  font-size: 0.9rem;
  font-weight: 700;
}

.linear-var-label--subdued {
  fill: #a9bddf;
  opacity: 0.75;
}

.linear-mode-hint {
  fill: #8da4cb;
  font-size: 0.84rem;
}

@media (max-width: 960px) {
  .linear-observation-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .linear-settings-grid,
  .linear-input-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .linear-speed-wrap {
    margin-left: 0;
    max-width: none;
    width: 100%;
  }
}