.nav-help.svelte-15wy3qb {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    padding: 10px 12px 10px;
    min-width: 210px;
    color: #e2e8f0;
    font-size: 0.72rem;
    pointer-events: all;
    animation: svelte-15wy3qb-fadeInUp 180ms ease both;
  }

  /* Absolute-positioned mode used by the 3D Viewer (visible prop driven) */
  .nav-help.positioned.svelte-15wy3qb {
    position: absolute;
    right: calc(16px + var(--help-right-offset, 0px));
    bottom: 16px;
    width: min(240px, calc(100vw - 48px));
    z-index: 100;
    animation: none;
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
    transition:
      opacity 180ms ease,
      transform 180ms ease,
      right 180ms ease;
  }

  .nav-help.positioned.is-visible.svelte-15wy3qb {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
  }

  @media (max-width: 1200px) {
    .nav-help.positioned.svelte-15wy3qb {
      width: min(220px, calc(100vw - 42px));
    }
  }

  @keyframes svelte-15wy3qb-fadeInUp {
    from {
      opacity: 0;
      transform: translateY(6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .nav-help-header.svelte-15wy3qb {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
  }

  .nav-help-title.svelte-15wy3qb {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #8da1b9;
  }

  .nav-help-close.svelte-15wy3qb {
    background: none;
    border: none;
    color: #8da1b9;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0 2px;
    border-radius: 4px;
    transition: color 120ms ease;
  }
  .nav-help-close.svelte-15wy3qb:hover {
    color: #f8fafc;
  }

  .nav-section.svelte-15wy3qb {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .nav-row.svelte-15wy3qb {
    display: grid;
    grid-template-columns: 86px 12px 1fr;
    align-items: center;
    gap: 8px;
    min-height: 20px;
  }

  .nav-action-label.svelte-15wy3qb {
    display: flex;
    align-items: center;
    gap: 7px;
    color: #94a3b8;
    font-size: 0.68rem;
  }

  .mouse-icon.svelte-15wy3qb {
    color: #475569;
    flex-shrink: 0;
  }
  .mouse-icon.left-click.svelte-15wy3qb,
  .mouse-icon.double-click.svelte-15wy3qb {
    color: #3fa6d1;
  }
  .mouse-icon.right-click.svelte-15wy3qb {
    color: #8b5cf6;
  }

  .nav-arrow.svelte-15wy3qb {
    color: #475569;
    font-size: 0.65rem;
    text-align: center;
  }

  .nav-desc.svelte-15wy3qb {
    color: #e2e8f0;
    white-space: nowrap;
  }

  .nav-help-divider.svelte-15wy3qb {
    height: 1px;
    background: rgba(255, 255, 255, 0.07);
    margin: 8px 0;
  }

  /* Keyboard shortcuts */
  .shortcuts.svelte-15wy3qb {
    gap: 4px;
  }

  .shortcut-row.svelte-15wy3qb {
    display: grid;
    grid-template-columns: 86px 12px 1fr;
    align-items: center;
    gap: 8px;
    min-height: 22px;
    color: #cbd5e1;
  }

  .shortcut-desc.svelte-15wy3qb {
    grid-column: 3;
  }

  .shortcut-keys.svelte-15wy3qb {
    display: flex;
    justify-content: flex-start;
    padding-left: 2px;
  }

  kbd.svelte-15wy3qb {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-bottom-width: 2px;
    border-radius: 4px;
    padding: 1px 5px;
    font-family: inherit;
    font-size: 0.65rem;
    color: #e2e8f0;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .kbd-group.svelte-15wy3qb {
    display: flex;
    gap: 2px;
  }

  .nav-section-label.svelte-15wy3qb {
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: #64748b;
    padding: 2px 0;
  }

  .bg-picker.svelte-17tqkgb {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 200px;
  }

  .bg-presets.svelte-17tqkgb {
    display: flex;
    gap: 6px;
  }

  .bg-preset.svelte-17tqkgb {
    width: 32px;
    height: 24px;
    padding: 0;
    border: 1px solid var(--viewer-panel-border);
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.15s ease;
  }

  .bg-preset.svelte-17tqkgb:hover {
    border-color: var(--viewer-accent-border);
  }

  .bg-preset.selected.svelte-17tqkgb {
    border-color: var(--viewer-accent);
    box-shadow: 0 0 0 2px var(--viewer-accent-fill-soft);
  }

  .bg-row.svelte-17tqkgb {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .bg-label.svelte-17tqkgb {
    flex: 0 0 48px;
    font-size: 11px;
    font-weight: 500;
    color: var(--viewer-panel-dim);
  }

  .bg-segmented.svelte-17tqkgb {
    display: flex;
    border: 1px solid var(--viewer-panel-border);
    border-radius: 4px;
    overflow: hidden;
  }

  .bg-segment.svelte-17tqkgb {
    padding: 3px 10px;
    font-size: 11px;
    background: transparent;
    border: none;
    color: var(--viewer-panel-dim);
    cursor: pointer;
  }

  .bg-segment.svelte-17tqkgb:hover {
    background: var(--viewer-hover-overlay);
  }

  .bg-segment.selected.svelte-17tqkgb {
    background: var(--viewer-accent-fill);
    color: var(--viewer-accent-text);
  }

  /* Not relying on the shared `.viewer-dark-scope input` rules: this component
     also renders on the graph page, which is outside that scope. */
  .bg-hex.svelte-17tqkgb {
    flex: 1 1 0;
    min-width: 0;
    padding: 3px 6px;
    font-size: 11px;
    font-family: monospace;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--viewer-panel-border);
    border-radius: 4px;
    color: var(--viewer-panel-text);
  }

  .bg-hex.svelte-17tqkgb:focus {
    outline: none;
    border-color: var(--viewer-accent-border);
    box-shadow: 0 0 0 2px var(--viewer-accent-fill-soft);
  }

  .bg-preview.svelte-17tqkgb {
    height: 28px;
    border: 1px solid var(--viewer-panel-border);
    border-radius: 4px;
  }

  .bg-reset.svelte-17tqkgb {
    align-self: flex-end;
    padding: 3px 8px;
    font-size: 11px;
    background: transparent;
    border: 1px solid var(--viewer-panel-border);
    border-radius: 4px;
    color: var(--viewer-panel-dim);
    cursor: pointer;
  }

  .bg-reset.svelte-17tqkgb:hover:not(:disabled) {
    background: var(--viewer-hover-overlay);
    color: var(--viewer-panel-text);
  }

  .bg-reset.svelte-17tqkgb:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }

  .viewcube.svelte-o2nae8 {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 148px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  }

  .cube-row.svelte-o2nae8 {
    display: flex;
    gap: 4px;
  }

  .cube-btn.svelte-o2nae8 {
    flex: 1 1 0;
    min-width: 0;
    height: 30px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #8da1b9;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0 4px;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
  }

  /* Full-width TOP / BOT buttons */
  .cube-btn.wide.svelte-o2nae8 {
    width: 100%;
    flex: none;
  }

  /* PORT / STBD share the row evenly */
  .cube-btn.half.svelte-o2nae8 {
    flex: 1 1 0;
  }

  .label.svelte-o2nae8 {
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: 1;
  }

  .hint.svelte-o2nae8 {
    font-size: 0.7rem;
    line-height: 1;
    opacity: 0.55;
  }

  .cube-btn.svelte-o2nae8:hover {
    border-color: rgba(63, 166, 209, 0.4);
    color: #e2e8f0;
    background: rgba(63, 166, 209, 0.12);
  }

  .cube-btn.svelte-o2nae8:hover .hint:where(.svelte-o2nae8) {
    opacity: 0.85;
  }

  .cube-btn.active.svelte-o2nae8 {
    background: rgba(63, 166, 209, 0.25);
    border-color: rgba(63, 166, 209, 0.6);
    color: #3fa6d1;
  }

  .cube-btn.active.svelte-o2nae8 .hint:where(.svelte-o2nae8) {
    opacity: 1;
  }

  .cube-btn.svelte-o2nae8:focus-visible {
    outline: 2px solid rgba(63, 166, 209, 0.7);
    outline-offset: 1px;
  }