/* Theme, settings, sim chrome */

  :root {
    --bg: #071020;
    --panel: #0f1c35;
    --accent: #4fd1ff;
    --accent-soft: #9be7ff;
    --text: #e5ecff;
    --muted: #9aa8cc;
    --radius: 14px;
    --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  }
  * { box-sizing: border-box; }
  html, body {
    margin: 0;
    height: 100%;
    background: radial-gradient(circle at top, #172554 0, #020617 55%, #000 100%);
    color: var(--text);
    font-family: var(--sans);
    overflow: hidden;
  }
  body {
    display: flex;
    flex-direction: row;
  }
  .app {
    flex: 1;
    display: flex;
    flex-direction: row;
    padding: 8px;
    gap: 8px;
    height: 100%;
    width: 100vw;
    max-width: 100vw;
    box-sizing: border-box;
    overflow-x: hidden;
  }
  .simulation-area {
    flex: 1 1 0;
    min-width: 0;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .simulation-panel {
    width: 100%;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    aspect-ratio: 57 / 34;
    background: transparent;
    border-radius: var(--sim-panel-radius-pct-h, 2.0619%);
    border: var(--sim-panel-border-pct-h, 0.2946%) solid #00bfff;
    box-shadow:
      0 0 var(--sim-panel-glow-inner-blur-pct-h, 10px) rgba(0, 191, 255, 0.6),
      0 0 var(--sim-panel-glow-outer-blur-pct-h, 22px) rgba(0, 191, 255, 0.35);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    --sim-scale-w: 1;
    --sim-scale-h: 1;
    --sim-scale: 1;
  }
  .settings-panel {
    flex: 0 0 25vw;
    width: 25vw;
    min-width: 25vw;
    max-width: 25vw;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    /* Extra bottom space so the Scarecrow corner logo does not cover controls. */
    padding: 31px 16px 5.5rem;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(15,23,42,0.96), rgba(15,23,42,0.99));
    border: 1px solid #1f2937;
    box-shadow: 0 8px 20px rgba(0,0,0,0.55);
    gap: 16px;
    position: relative;
    overflow-y: auto;
    --settings-scale: 1;
    font-size: calc(1rem * var(--settings-scale));
  }
  .settings-panel button,
  .settings-panel input,
  .settings-panel select,
  .settings-panel label {
    font-size: inherit;
  }
  .settings-panel button {
    padding: calc(10px * var(--settings-scale)) calc(12px * var(--settings-scale));
  }
  .settings-panel .instructions-button,
  .settings-panel .se-button {
    padding: calc(8px * var(--settings-scale)) calc(12px * var(--settings-scale));
  }
  .settings-panel .mode-toggle button {
    font-size: calc(20px * var(--settings-scale));
    padding: calc(8px * var(--settings-scale)) calc(6px * var(--settings-scale));
  }
  .settings-panel .seg button {
    font-size: calc(13px * var(--settings-scale));
    padding: calc(8px * var(--settings-scale)) calc(12px * var(--settings-scale));
  }
  .settings-panel .system-bulk-btn,
  .settings-panel .system-grid-btn {
    border-radius: 0;
  }
  .settings-panel input[type="range"] {
    height: calc(18px * var(--settings-scale));
  }
  .model-sex-control {
    display: none;
  }
  .mode-toggle {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    margin-top: 18px;
    margin-bottom: 10px;
  }
  .mode-toggle button {
    flex: 1;
    border: none;
    background: transparent;
    color: rgba(79,209,255,0.65);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 1.5px;
    padding: 8px 6px;
    text-transform: uppercase;
    text-shadow: 0 0 8px rgba(79,209,255,0.45);
    cursor: default;
  }
  .mode-toggle button.active {
    color: #9be7ff;
    text-shadow: 0 0 12px rgba(155,231,255,0.85), 0 0 24px rgba(79,209,255,0.6);
    border-bottom: 2px solid rgba(79,209,255,0.8);
  }
  .top-buttons {
    position: absolute;
    top: 5px;
    left: 10px;
    right: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    z-index: 100;
    pointer-events: none;
    max-width: 100%;
  }
  .top-buttons > * {
    pointer-events: auto;
  }
  .instructions-container {
    position: static;
    display: flex;
    align-items: center;
    min-width: 0;
    max-width: 100%;
  }
  .instructions-button {
    padding: 8px 12px;
    border-radius: 6px;
    background: #1f2937;
    border: 1px solid #1f2937;
    color: var(--text);
    font-size: 13px;
    font-family: var(--sans);
    cursor: pointer;
    font-weight: 600;
  }
  .se-container {
    position: static;
    display: flex;
    align-items: center;
    min-width: 0;
    max-width: 100%;
  }
  .se-button {
    padding: 8px 12px;
    border-radius: 6px;
    background: #1f2937;
    border: 1px solid #1f2937;
    color: var(--text);
    font-size: 13px;
    font-family: var(--sans);
    cursor: pointer;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-shadow: 0 0 10px rgba(79, 209, 255, 0.35);
    box-shadow: 0 0 16px rgba(79, 209, 255, 0.35);
  }
  .top-buttons .instructions-button,
  .top-buttons .se-button {
    white-space: nowrap;
    min-height: calc(32px * var(--settings-scale));
    max-width: 100%;
    flex-shrink: 1;
    font-size: clamp(11px, 1.15vw, 13px);
  }
  .se-button .se-icon {
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 0 6px rgba(255, 230, 120, 0.8));
  }
  .instructions-button.active {
    border-color: #4fd1ff;
    box-shadow: 0 0 0 2px rgba(79, 209, 255, 0.35);
  }
  .instructions-popup {
    display: none;
    position: fixed;
    top: 50px;
    right: 20px;
    width: 680px;
    max-width: 85vw;
    min-width: 360px;
    max-height: calc(100dvh - 72px);
    background: rgba(7, 16, 32, 0.95);
    border: 1px solid #4fd1ff;
    border-radius: 8px;
    padding: 14px 16px 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.6);
    color: var(--text);
    font-size: 13px;
    line-height: 1.55;
    z-index: 4501;
    white-space: normal;
    overflow: auto;
  }
  .instructions-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 4500;
    margin: 0;
    padding: 0;
    border: 0;
    background: rgba(3, 8, 18, 0.72);
    cursor: pointer;
  }
  body.instructions-open {
    overflow: hidden;
  }
  body.instructions-open .app {
    pointer-events: none;
  }
  body.instructions-open .instructions-container,
  body.instructions-open .instructions-popup,
  body.instructions-open .instructions-backdrop {
    pointer-events: auto;
  }
  .instructions-body {
    padding-right: 8px;
    padding-top: 4px;
  }
  .instructions-body h3.instructions-heading {
    display: block;
    margin: 1.15em 0 8px;
    font-size: 1.15em;
    font-weight: 800;
    letter-spacing: 0.02em;
  }
  .instructions-body h3.instructions-heading:first-child {
    margin-top: 0;
  }
  .instructions-body h4.instructions-step {
    margin: 1em 0 0.4em;
    font-size: 1.05em;
    font-weight: 700;
    color: var(--text);
  }
  .instructions-body p {
    margin: 0 0 0.75em;
  }
  .instructions-body ul {
    margin: 0 0 0.35em;
    padding-left: 1.25em;
  }
  .instructions-body li {
    margin: 0.4em 0;
  }
  .instructions-body ul ul {
    margin: 0.35em 0 0.15em;
    padding-left: 1.15em;
  }
  body.app-mode-quiz .instructions-body-explore,
  body:not(.app-mode-quiz) .instructions-body-quiz {
    display: none;
  }
  .instructions-ui-term {
    font-weight: 800;
    color: #5ce1ff;
    text-shadow:
      0 0 6px rgba(92, 225, 255, 0.95),
      0 0 14px rgba(79, 209, 255, 0.65),
      0 0 24px rgba(79, 209, 255, 0.35);
  }
  .instructions-close {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid #22306a;
    background: #101a42;
    color: var(--text);
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
  }
  .instructions-container.open .instructions-popup {
    display: block;
  }
  .instructions-container.open .instructions-backdrop {
    display: block;
  }
  .controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
    min-width: 0;
  }
  .button-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  button {
    -webkit-appearance: none;
    appearance: none;
    border-radius: 10px;
    border: 1px solid #22306a;
    padding: 10px 12px;
    background: #132054;
    color: #e6edff;
    cursor: pointer;
    font-weight: 700;
  }
  .control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .seg {
    display: flex;
    border: 1px solid #22306a;
    border-radius: 10px;
    overflow: hidden;
    width: max-content;
  }
  .seg button {
    background: #0f1839;
    color: #dbe7ff;
    border: 0;
    padding: 8px 12px;
    font-weight: 700;
    cursor: pointer;
    flex: 1;
    text-align: center;
    font-size: 13px;
    font-family: var(--sans);
  }
  .seg button + button {
    border-left: 1px solid #22306a;
  }
  .seg button.active {
    background: #1a2a63;
    color: #ffffff;
  }
  .control-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--accent-soft);
  }
  .control-group span {
    color: var(--text);
    font-weight: 700;
  }
  .control-group input[type="range"] {
    flex: 1;
  }
  .control-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
  }
  .settings-subheading {
    margin: 0;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--accent-soft);
  }
  .system-selection,
  .model-level-control,
  .app-mode-control,
  .quiz-system-control,
  .deselection-effect-control,
  .click-to-hide-control,
  .quiz-fade-other-control,
  .show-functions-control,
  .modesty-filter-control {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  .system-selection {
    padding: 10px 0;
    margin: 0;
    width: 100%;
    max-width: 100%;
    border-radius: 8px;
    box-sizing: border-box;
    cursor: default;
  }
  .settings-panel .system-grid,
  .settings-panel .system-bulk-actions {
    width: 100%;
    max-width: 100%;
  }
  .click-to-hide-main-row,
  .deselection-effect-row,
  .quiz-fade-other-row,
  .show-functions-row,
  .modesty-filter-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
  }
  .click-to-hide-main-row .settings-subheading,
  .deselection-effect-row .settings-subheading,
  .show-functions-row .settings-subheading,
  .quiz-fade-other-row .settings-subheading,
  .modesty-filter-row .settings-subheading {
    margin: 0;
    flex: 1 1 auto;
    min-width: 0;
  }
  .click-to-hide-main-controls {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    flex: 0 0 auto;
    margin-left: auto;
  }
  .click-to-hide-main-row .seg,
  .deselection-effect-row .seg,
  .quiz-fade-other-row .seg,
  .show-functions-row .seg,
  .modesty-filter-row .seg {
    flex: 0 0 auto;
    width: max-content;
  }
  .click-to-hide-main-row .seg button,
  .deselection-effect-row .seg button,
  .quiz-fade-other-row .seg button,
  .show-functions-row .seg button,
  .modesty-filter-row .seg button {
    flex: 0 0 auto;
    padding: 6px 10px;
  }
  .click-to-hide-main-row .click-to-hide-btn {
    flex: 0 0 auto;
    padding: 6px 10px;
    font-size: calc(13px * var(--settings-scale, 1));
    line-height: 1.2;
  }
  .deselection-effect-control {
    margin-left: 14px;
    padding-left: 12px;
    border-left: 2px solid rgba(79, 209, 255, 0.28);
    box-sizing: border-box;
  }
  .deselection-effect-control[hidden] {
    display: none !important;
  }
  .model-level-row,
  .app-mode-row {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    flex-wrap: wrap;
  }
  .model-level-label,
  .app-mode-label {
    margin: 0;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--accent-soft);
    white-space: nowrap;
  }
  .app-mode-control .seg {
    flex: 1 1 220px;
    min-width: 0;
    max-width: 100%;
    width: auto;
  }
  body.app-mode-quiz #skeletonBrowserPanel,
  body.app-mode-quiz #anatomySearchPanel,
  body.app-mode-quiz #sliceControlPanel {
    display: none !important;
  }
  body.app-mode-quiz .system-selection {
    display: none !important;
  }
  body.app-mode-quiz .deselection-effect-control,
  body.app-mode-quiz .click-to-hide-control {
    display: none !important;
  }
  body.app-mode-quiz .show-functions-control {
    display: none !important;
  }
  .quiz-system-control {
    display: none;
  }
  .quiz-type-control {
    display: none;
  }
  body.app-mode-quiz .quiz-system-control,
  body.app-mode-quiz .quiz-type-control,
  body.app-mode-quiz .quiz-challenge-control {
    display: flex;
  }

  .quiz-challenge-control {
    display: none;
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  .quiz-challenge-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    flex-wrap: wrap;
  }
  .quiz-challenge-row .settings-subheading {
    margin: 0;
    flex: 1 1 auto;
    min-width: 0;
  }
  .quiz-challenge-start-btn {
    flex: 0 0 auto;
    margin-left: auto;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid #4fd1ff;
    background: #2563eb;
    color: #ffffff;
    font-weight: 700;
    font-family: var(--sans);
    font-size: calc(13px * var(--settings-scale, 1));
    cursor: pointer;
  }
  .quiz-challenge-start-btn.is-cancel {
    background: #7f1d1d;
    border-color: #f87171;
  }
  body.challenge-mode-active .settings-panel .top-buttons,
  body.challenge-mode-active .settings-panel .controls:not(.quiz-challenge-control):not(.quiz-fade-other-control) {
    opacity: 0.45;
    pointer-events: none;
    filter: grayscale(0.35);
  }
  body.challenge-mode-active .quiz-challenge-control,
  body.challenge-mode-active .quiz-fade-other-control {
    opacity: 1;
    pointer-events: auto;
    filter: none;
  }

  .quiz-subsystem-row {
    margin-top: 0.45rem;
    padding-left: 1rem;
  }

  .quiz-subsystem-row .settings-subheading {
    font-size: 0.92em;
    font-weight: 600;
  }

  .quiz-fade-other-control {
    display: none;
  }

  body.app-mode-quiz .quiz-fade-other-control {
    display: flex;
  }
  .quiz-type-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    width: 100%;
    border: 1px solid #22306a;
    border-radius: 10px;
    overflow: hidden;
  }
  .quiz-type-btn {
    min-height: 0;
    margin: 0;
    border: 0;
    border-radius: 0;
    box-shadow: inset -1px 0 0 #22306a, inset 0 -1px 0 #22306a;
    background: #0f1839;
    color: #dbe7ff;
    font-weight: 700;
    font-family: var(--sans);
    font-size: 13px;
    line-height: 1.15;
    text-align: center;
    cursor: pointer;
    padding: 10px 6px;
  }
  .quiz-type-btn.is-on {
    background: #2563eb;
    color: #ffffff;
  }