:root {
    --bg: #0a0a0b;
    --bg-raised: #131315;
    --bg-panel: #17181a;
    --bg-deep: #050506;
    --bg-elevated: #1e1f22;
    --ink: #e8e9eb;
    --ink-dim: #8b8d93;
    --ink-faint: #5a5c62;
    --ink-ghost: #2d2e32;
    --accent: #5b8def;
    --accent-bright: #7ba6ff;
    --accent-dim: #2c4a85;
    --accent-glow: rgba(91, 141, 239, 0.15);
    --accent-b: #f59e0b;
    --accent-b-dim: #78350f;
    --success: #22c55e;
    --warn: #f59e0b;
    --danger: #ef4444;
    --line: #26272b;
    --line-bright: #35363a;
    --split-line: #ffffff;
    /* Viewer (canvas background + chips flotantes sobre el scan) */
    --viewer-bg: #000000;
    --chip-bg: rgba(10, 10, 11, 0.85);
    --chip-bg-solid: rgba(10, 10, 11, 0.9);
  }

  /* ============ LIGHT THEME ============
     Activá con: <body data-theme="light"> (o sin atributo = dark por default).
     Solo re-mapea superficies y tinta; los accents/semánticos se mantienen. */
  [data-theme="light"] {
    --bg: #f5f6f8;
    --bg-raised: #eceef2;
    --bg-panel: #ffffff;
    --bg-deep: #fafbfc;
    --bg-elevated: #e2e5ea;
    --ink: #1a1b1f;
    --ink-dim: #5a5c62;
    --ink-faint: #8b8d93;
    --ink-ghost: #d0d2d7;
    --accent-dim: #b3c5ed;
    --accent-glow: rgba(91, 141, 239, 0.12);
    --line: #d8dade;
    --line-bright: #b8babe;
    --split-line: #1a1b1f;
    --viewer-bg: #2a2d33;
    --chip-bg: rgba(255, 255, 255, 0.88);
    --chip-bg-solid: rgba(255, 255, 255, 0.94);
  }

  body, .topbar, .sidebar-left, .sidebar-right, .statusbar, .panel, .bottom-bar, .load-strip {
    transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  }

  /* Toggle de tema en sidebar-left top-actions */
  .theme-toggle {
    background: transparent;
    border: 1px solid var(--line-bright);
    color: var(--ink-dim);
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
    font-size: 0;
  }
  .theme-toggle::before {
    content: '🌙';
    font-size: 14px;
  }
  [data-theme="light"] .theme-toggle::before {
    content: '☀';
  }
  .theme-toggle:hover {
    background: var(--bg-raised);
    border-color: var(--ink-faint);
    color: var(--ink);
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html, body { height: 100%; }

  body {
    background: var(--bg);
    color: var(--ink);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 13px;
    line-height: 1.45;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    user-select: none;
  }

  .mono { font-family: 'JetBrains Mono', monospace; }

  .app {
    display: grid;
    grid-template-rows: 52px 1fr 28px;
    height: 100vh;
  }

  /* ============ TOP BAR ============ */
  .topbar {
    background: var(--bg-deep);
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
    font-size: 13px;
    min-height: 52px;
    flex-wrap: nowrap;
  }
  .topbar > .brand { flex-shrink: 0; }
  .topbar > .nav-main { flex: 1 1 auto; justify-content: center; min-width: 0; overflow: hidden; }
  .topbar > .topbar-actions { flex-shrink: 0; margin-left: auto; }
  .topbar > button.user-area { flex-shrink: 0; margin-left: 8px; }
  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .brand-logo {
    width: 28px; height: 28px;
    background: var(--accent);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
  }
  .brand-logo::before {
    content: '';
    width: 12px; height: 12px;
    background: var(--bg-deep);
    border-radius: 50%;
  }
  .brand-logo::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    left: 50%;
    width: 1px;
    background: var(--accent-bright);
  }
  .brand-name { font-weight: 600; letter-spacing: -0.01em; color: var(--ink); }
  .brand-name .sub { color: var(--ink-dim); font-weight: 400; margin-left: 4px; }

  .nav-main { display: flex; gap: 2px; }
  .nav-main button {
    background: transparent; border: none;
    color: var(--ink-dim); font-family: inherit;
    font-size: 13px; font-weight: 500;
    padding: 8px 16px; border-radius: 6px;
    cursor: pointer; transition: all 0.15s;
  }
  .nav-main button:hover { color: var(--ink); background: var(--bg-raised); }
  .nav-main button.active { color: var(--ink); background: var(--bg-elevated); }

  .user-area { display: flex; align-items: center; gap: 14px; color: var(--ink-dim); font-size: 12px; }
  .tenant-chip {
    padding: 4px 10px; border: 1px solid var(--line-bright);
    border-radius: 6px; color: var(--ink); font-size: 11px;
    font-weight: 500; background: var(--bg-raised);
  }
  .user-avatar {
    width: 30px; height: 30px;
    background: linear-gradient(135deg, var(--accent), #7ba6ff);
    color: #fff; display: flex;
    align-items: center; justify-content: center;
    font-weight: 600; font-size: 11px; border-radius: 50%;
  }

  /* ============ MAIN LAYOUT ============ */
  .main {
    display: grid;
    grid-template-columns: var(--sidebar-l-w, 300px) 1fr var(--sidebar-r-w, 320px);
    overflow: hidden;
    transition: grid-template-columns 0.22s ease;
  }
  /* Modo inmersivo: colapsa ambos sidebars a 0 para que el viewer ocupe
     todo el ancho. Activable desde botón en top-actions o tecla F. */
  body[data-immersive="true"] .main {
    --sidebar-l-w: 0px;
    --sidebar-r-w: 0px;
  }

  /* ============ LEFT SIDEBAR - CONTROLS ============ */
  .sidebar-left {
    background: var(--bg-deep);
    border-right: 1px solid var(--line);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    transition: opacity 0.16s ease;
  }
  body[data-immersive="true"] .sidebar-left,
  body[data-immersive="true"] .sidebar-right {
    opacity: 0;
    pointer-events: none;
  }
  /* Botón flotante para salir del modo inmersivo. Sin esto quedás atrapado
     porque el botón que toggleaba vivía en el sidebar izquierdo (oculto). */
  .immersive-exit {
    display: none;
    position: fixed;
    top: 14px;
    right: 14px;
    z-index: 1000;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(22, 22, 26, 0.82);
    color: rgba(255, 255, 255, 0.92);
    font-family: inherit;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.02em;
    cursor: pointer;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
    transition: background 120ms ease, transform 120ms ease;
  }
  .immersive-exit:hover { background: rgba(40, 40, 46, 0.92); transform: translateY(-1px); }
  .immersive-exit svg { opacity: 0.9; }


  .panel {
    border-bottom: 1px solid var(--line);
  }
  .panel-header {
    padding: 10px 16px 8px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-dim);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
  }
  .panel-header::after {
    content: '▾';
    font-size: 10px;
    transition: transform 0.15s;
    color: var(--ink-faint);
  }
  .panel.collapsed .panel-header::after { transform: rotate(-90deg); }
  .panel-body { padding: 0 16px 16px; }
  .panel.collapsed .panel-body { display: none; }

  .top-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
  }
  .top-actions button {
    padding: 6px 4px;
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    border-radius: 5px;
    color: var(--ink);
    font-family: inherit;
    font-size: 10px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
  }
  .top-actions button:hover {
    background: var(--bg-panel);
    border-color: var(--accent);
    color: var(--accent);
  }

  /* LIGHT GIZMO */
  .light-row {
    display: grid;
    grid-template-columns: 1fr 96px;
    gap: 14px;
    align-items: center;
    margin-bottom: 12px;
  }
  .light-inputs .label {
    font-size: 11px;
    font-weight: 500;
    color: var(--ink-dim);
    margin-bottom: 6px;
  }
  .xy-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
  }
  .xy-row label {
    font-weight: 600;
    font-size: 10px;
    color: var(--ink-dim);
    width: 14px;
    font-family: 'JetBrains Mono', monospace;
  }
  .xy-row input {
    flex: 1;
    padding: 4px 8px;
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--ink);
    text-align: center;
  }
  .xy-row input:focus {
    outline: 1px solid var(--accent);
    border-color: var(--accent);
  }

  /* El gizmo - diseño dark modern */
  .gizmo-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
  }
  .gizmo {
    width: 90px;
    height: 90px;
    position: relative;
    background:
      radial-gradient(circle at 32% 30%, rgba(255,255,255,0.08) 0%, transparent 50%),
      radial-gradient(circle at center, var(--bg-elevated) 0%, var(--bg-panel) 100%);
    border: 1.5px solid var(--line-bright);
    border-radius: 50%;
    cursor: crosshair;
    touch-action: none;
    box-shadow:
      inset 0 2px 6px rgba(0,0,0,0.4),
      0 0 0 3px rgba(91, 141, 239, 0.05);
  }
  /* Ecuador (línea horizontal azul) */
  .gizmo::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 6px;
    right: 6px;
    height: 1px;
    background: var(--accent);
    opacity: 0.5;
    transform: translateY(-0.5px);
  }
  /* Meridiano (línea vertical ámbar/roja) */
  .gizmo::after {
    content: '';
    position: absolute;
    top: 6px;
    bottom: 6px;
    left: 50%;
    width: 1px;
    background: var(--accent-b);
    opacity: 0.55;
    transform: translateX(-0.5px);
  }
  /* Arco superior */
  .gizmo-arc {
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    height: 50%;
    border: 1px solid var(--accent);
    border-bottom: none;
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
    opacity: 0.35;
  }
  /* Setpoints */
  .gizmo-setpoint {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--ink-faint);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 2;
  }
  .gizmo-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--ink);
    border: 2px solid var(--accent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    cursor: grab;
    box-shadow: 0 0 12px rgba(91, 141, 239, 0.6);
    transition: transform 0.05s;
  }
  .gizmo-handle:active {
    cursor: grabbing;
    transform: translate(-50%, -50%) scale(1.15);
  }
  .gizmo-hint {
    font-size: 9px;
    color: var(--ink-faint);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 500;
  }

  /* Checkbox rows */
  .check-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 10px;
    margin-bottom: 10px;
  }
  .check {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 2px 0;
    font-size: 11px;
    color: var(--ink);
  }
  .check input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent);
    cursor: pointer;
    margin: 0;
  }

  /* Sliders */
  .slider-row {
    display: grid;
    grid-template-columns: 75px 1fr 45px;
    gap: 8px;
    align-items: center;
    margin-bottom: 10px;
    font-size: 11px;
  }
  .slider-row label {
    color: var(--ink-dim);
    font-size: 11px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .slider-row label input[type="checkbox"] {
    width: 12px; height: 12px;
    accent-color: var(--accent);
  }
  .slider-row input[type="range"] {
    width: 100%;
    accent-color: var(--accent);
    height: 4px;
    cursor: pointer;
  }
  .slider-row button {
    padding: 3px 6px;
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    border-radius: 4px;
    color: var(--ink-dim);
    font-family: inherit;
    font-size: 10px;
    cursor: pointer;
  }
  .slider-row button:hover {
    border-color: var(--accent);
    color: var(--accent);
  }

  /* Select */
  .select-row {
    display: grid;
    grid-template-columns: 75px 1fr;
    gap: 8px;
    align-items: center;
    margin-bottom: 10px;
    font-size: 11px;
  }
  .select-row label { color: var(--ink-dim); font-size: 11px; font-weight: 500; }
  .select-row select {
    padding: 5px 8px;
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    border-radius: 4px;
    color: var(--ink);
    font-family: inherit;
    font-size: 11px;
    cursor: pointer;
  }
  .select-row select:focus {
    outline: 1px solid var(--accent);
    border-color: var(--accent);
  }
  .select-full { grid-template-columns: 1fr; }

  /* Sync scope toggle */
  .sync-scope {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3px;
    padding: 3px;
    background: var(--bg-raised);
    border-radius: 6px;
    border: 1px solid var(--line);
    margin-top: 8px;
  }
  .sync-scope button {
    padding: 6px 8px;
    background: transparent;
    border: none;
    color: var(--ink-dim);
    font-family: inherit;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
  }
  .sync-scope button.active {
    background: var(--accent);
    color: #fff;
  }
  .sync-scope button .dot {
    width: 6px; height: 6px;
    border-radius: 50%;
  }

  /* Scan Information */
  .scan-info {
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    line-height: 1.5;
  }
  .scan-info .legacy-warn {
    color: var(--warn);
    font-weight: 700;
    font-family: 'Inter', sans-serif;
    padding: 6px 10px;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 4px;
    margin-bottom: 10px;
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .scan-info-row {
    display: grid;
    grid-template-columns: 115px 1fr;
    padding: 2px 0;
    font-size: 11px;
  }
  .scan-info-row .key { color: var(--ink-dim); font-size: 10px; }
  .scan-info-row .val { color: var(--ink); font-size: 10px; word-break: break-word; }
  .scan-info-row .val.warn { color: #e9b949; }
  .scan-info-row.wide { grid-template-columns: 1fr; gap: 2px; }
  .scan-info-row.wide .val { white-space: pre-wrap; font-size: 10.5px; }

  /* ============ CENTER VIEWER ============ */
  .viewers {
    background: var(--bg);
    display: grid;
    grid-template-rows: 48px 1fr 40px;
    overflow: hidden;
  }

  .viewers-toolbar {
    background: var(--bg-deep);
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    padding: 0 14px;
    gap: 8px;
  }

  .mode-toggle {
    display: flex;
    background: var(--bg-raised);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
  }
  .mode-btn {
    padding: 8px 14px;
    background: transparent;
    border: none;
    color: var(--ink-dim);
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 6px;
    border-right: 1px solid var(--line);
  }
  .mode-btn:last-child { border-right: none; }
  .mode-btn:hover { color: var(--ink); }
  .mode-btn.active {
    color: #fff;
    background: var(--accent);
  }
  .mode-btn svg { width: 14px; height: 14px; }

  .tool-group {
    display: flex;
    gap: 2px;
    padding: 3px;
    background: var(--bg-raised);
    border-radius: 8px;
    border: 1px solid var(--line);
  }
  .tool {
    width: 32px; height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink-dim);
    cursor: pointer;
    border-radius: 5px;
    background: transparent;
    border: none;
    transition: all 0.15s;
  }
  .tool:hover { color: var(--ink); background: var(--bg-elevated); }
  .tool.active { color: #fff; background: var(--accent); }
  .tool svg { width: 15px; height: 15px; }

  /* Indicador flotante del ángulo durante la rotación libre (estilo iPhone
     Photos). Aparece centrado sobre el scan mientras el drag está activo. */
  .rotate-angle-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 92px;
    height: 92px;
    border-radius: 50%;
    background: var(--chip-bg-solid);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--line-bright);
    color: var(--ink);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.12s ease, transform 0.12s ease;
  }
  .rotate-angle-indicator.visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  .rotate-angle-indicator .ring-arc {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid var(--line);
    border-top-color: var(--accent);
    transform: rotate(var(--ring-rot, 0deg));
    transition: transform 0.06s linear;
  }
  .rotate-angle-indicator .ring-value {
    font: 600 18px/1 'JetBrains Mono', monospace;
    color: var(--ink);
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
  }

  /* Segmented control para aplicar zoom/rotación a ambos scans o solo uno.
     Ligado a state.toolTarget — se sincroniza con el select del panel
     Ajustes de imagen pero queda visible en la toolbar. */
  .target-toggle {
    display: inline-flex;
    background: var(--bg-raised);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    padding: 3px;
    gap: 2px;
  }
  .target-toggle button {
    padding: 6px 12px;
    background: transparent;
    border: none;
    color: var(--ink-dim);
    font-family: inherit;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: 5px;
    cursor: pointer;
    transition: color 0.12s, background 0.12s;
    min-width: 36px;
  }
  .target-toggle button:hover { color: var(--ink); background: var(--bg-elevated); }
  .target-toggle button.active {
    color: #fff;
    background: var(--accent);
  }

  .sync-indicator {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--ink-dim);
    font-size: 11px;
    font-weight: 500;
    background: var(--bg-raised);
    cursor: pointer;
    transition: color 0.12s, border-color 0.12s, background 0.12s;
    user-select: none;
  }
  .sync-indicator:hover {
    color: var(--ink);
    border-color: var(--line-bright);
  }
  .sync-indicator .dot {
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
  }
  .sync-indicator.off { opacity: 0.72; }
  .sync-indicator.off .dot { background: var(--ink-faint); }

  /* ========================================================================
     VIEWER AREA — full-width, layers A/B stacked + septum
     ======================================================================== */
  .viewer-area {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    background: var(--bg-deep);
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    align-items: stretch;
    justify-content: stretch;
    padding: 0;
  }

  /* Contenedor del cotejo: ocupa toda el área disponible del viewer */
  .scan-canvas {
    position: relative;
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    background: var(--viewer-bg);
    overflow: hidden;
  }

  /* Layers A/B: ambas ocupan 100% del contenedor y se superponen.
     - Layer A: z-index 1 (fondo, siempre visible)
     - Layer B: z-index 2 (encima; en split mode se recorta con clip-path
       según el septum, que se setea vía --septum-x). */
  .scan-layer {
    position: absolute;
    inset: 0;
    overflow: hidden;
  }
  .scan-layer.layer-a { z-index: 1; }
  .scan-layer.layer-b { z-index: 2; }

  /* SPLIT (comparison microscope tradicional): ambos scans renderizan su
     imagen completa en TODO el viewer, ambos centrados. Layer A se clipea
     a la mitad izquierda, layer B a la derecha, con el septum como frontera.
     Así el centro de A y el centro de B coinciden en el centro del viewer,
     permitiendo al perito alinear las striaciones que cruzan la frontera. */
  .viewer-area.mode-split .scan-layer.layer-a {
    inset: 0;
    width: auto;
    clip-path: inset(0 calc(100% - var(--septum-x, 50%)) 0 0);
  }
  .viewer-area.mode-split .scan-layer.layer-b {
    inset: 0;
    width: auto;
    clip-path: inset(0 0 0 var(--septum-x, 50%));
  }

  /* SIDE-BY-SIDE: A en cuadrante izquierdo, B en derecho (sin clip) */
  .viewer-area.mode-sidebyside .scan-canvas {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
  }
  .viewer-area.mode-sidebyside .scan-layer {
    position: relative;
    inset: auto;
  }
  .viewer-area.mode-sidebyside .scan-layer.layer-b {
    clip-path: none;
  }

  /* OVERLAY: ambos layers superpuestos con blend, sin clip */
  .viewer-area.mode-overlay .scan-layer.layer-b {
    clip-path: none;
    opacity: 0.55;
    mix-blend-mode: screen;
  }

  /* ========================================================================
     SEPTUM — línea + handle draggable + botón auto-centrar
     ======================================================================== */
  .septum-line,
  .septum-handle,
  .septum-center-btn { display: none; }

  .viewer-area.mode-split .septum-line {
    display: block;
    position: absolute;
    top: 0; bottom: 0;
    left: var(--septum-x, 50%);
    width: 1px;
    background: rgba(255, 255, 255, 0.55);
    transform: translateX(-0.5px);
    pointer-events: none;
    z-index: 5;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.35);
  }
  /* Handle del septum: discreto, gris neutro, ubicado en la parte inferior
     para no obstruir la zona central donde está la evidencia forense. */
  .viewer-area.mode-split .septum-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: auto;
    bottom: 14px;
    left: var(--septum-x, 50%);
    width: 28px; height: 28px;
    border-radius: 50%;
    background: rgba(30, 30, 34, 0.78);
    color: rgba(255, 255, 255, 0.82);
    transform: translateX(-50%);
    cursor: ew-resize;
    z-index: 6;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.35);
    user-select: none;
    touch-action: none;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    font-size: 11px;
    transition: background 120ms ease, transform 120ms ease;
  }
  .viewer-area.mode-split .septum-handle:hover { background: rgba(50, 50, 55, 0.92); transform: translateX(-50%) scale(1.08); }
  .viewer-area.mode-split .septum-handle:active { cursor: grabbing; }
  /* Botón "↔ 50/50" — arriba a la izquierda del swap, fuera del camino
     del septum-handle (centro vertical) y del load-strip (debajo del viewer). */
  .viewer-area.mode-split .septum-center-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(calc(-50% - 120px));  /* a la izquierda del swap-btn */
    background: var(--chip-bg-solid);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border: 1px solid var(--line-bright);
    color: var(--ink);
    font-family: inherit;
    font-size: 11px;
    padding: 6px 14px;
    border-radius: 20px;
    cursor: pointer;
    z-index: 7;
  }
  .viewer-area.mode-split .septum-center-btn:hover { border-color: var(--accent); color: var(--accent); }

  /* ========================================================================
     LABELS A / B (esquinas)
     ======================================================================== */
  .scan-label {
    position: absolute;
    top: 16px;
    z-index: 7;
    padding: 6px 12px;
    background: var(--chip-bg);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border: 1px solid var(--line-bright);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--ink);
    pointer-events: none;
  }
  .scan-label.label-a { left: 16px; }
  .scan-label.label-b { right: 16px; }
  .scan-label .dot-indicator {
    width: 8px; height: 8px;
    border-radius: 50%;
  }
  .viewer-area.mode-overlay .scan-label.label-b { display: none; }

  /* Swap button */
  .swap-btn {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 7;
    background: var(--chip-bg-solid);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border: 1px solid var(--line-bright);
    border-radius: 20px;
    padding: 6px 14px;
    color: var(--ink);
    font-family: inherit;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
  }
  .swap-btn:hover { border-color: var(--accent); color: var(--accent); }
  .swap-btn svg { width: 12px; height: 12px; }
  .viewer-area.mode-overlay .swap-btn { display: none; }

  /* Swap button */
  .swap-btn {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 7;
    background: var(--chip-bg-solid);
    backdrop-filter: blur(8px);
    border: 1px solid var(--line-bright);
    border-radius: 20px;
    padding: 6px 14px;
    color: var(--ink);
    font-family: inherit;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
  }
  .swap-btn:hover { border-color: var(--accent); color: var(--accent); }
  .swap-btn svg { width: 12px; height: 12px; }

  /* Info bar */
  .viewer-info-bar {
    position: absolute;
    bottom: 16px;
    left: 16px;
    right: 16px;
    z-index: 7;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 14px;
    background: var(--chip-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--line-bright);
    border-radius: 6px;
    font-size: 11px;
    color: var(--ink-dim);
  }
  /* El atributo HTML `hidden` es override-able por `display: flex`; forzamos
     el ocultamiento con specificity alta para que la barra no se cuele. */
  .viewer-info-bar[hidden] { display: none !important; }
  .viewer-info-item {
    display: flex;
    gap: 6px;
    align-items: center;
  }
  .viewer-info-item .k { color: var(--ink-faint); font-size: 10px; }
  .viewer-info-item .v { color: var(--ink); font-weight: 500; font-size: 11px; }

  /* Ruler */
  .ruler-wrap {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(92%, calc(100vh - 260px));
    padding-top: 8px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 10px;
    color: var(--ink-dim);
    z-index: 1;
  }
  .ruler {
    flex: 1;
    position: relative;
    height: 14px;
  }
  .ruler-scale {
    width: 100%;
    height: 6px;
    border-bottom: 1px solid var(--ink-dim);
    position: relative;
  }
  .ruler-tick {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--ink-faint);
  }
  .ruler-tick.major { top: -3px; background: var(--ink-dim); }
  .ruler-label {
    position: absolute;
    top: -14px;
    transform: translateX(-50%);
    font-size: 9px;
    color: var(--ink-dim);
    font-family: 'JetBrains Mono', monospace;
  }

  /* BOTTOM CONTROLS */
  .bottom-bar {
    background: var(--bg-deep);
    border-top: 1px solid var(--line);
    padding: 0 16px;
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 11px;
  }
  .bottom-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--ink-dim);
  }
  .bottom-item .v {
    color: var(--ink);
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
  }
  .bottom-item .accent { color: var(--accent); }

  /* ============ RIGHT SIDEBAR ============ */
  .sidebar-right {
    background: var(--bg-deep);
    border-left: 1px solid var(--line);
    overflow-y: auto;
  }

  .side-assign {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    padding: 3px;
    background: var(--bg-raised);
    border-radius: 8px;
    margin-bottom: 10px;
    border: 1px solid var(--line);
  }
  .side-assign button {
    padding: 6px 8px;
    background: transparent;
    border: none;
    color: var(--ink-dim);
    font-family: inherit;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
  }
  .side-assign button.active {
    background: var(--bg-elevated);
    color: var(--ink);
  }
  .side-assign button .dot {
    width: 7px; height: 7px;
    border-radius: 50%;
  }

  .metadata-row {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid var(--line);
    font-size: 11px;
    align-items: center;
  }
  .metadata-row:last-child { border-bottom: none; }
  .metadata-row .key { color: var(--ink-dim); font-size: 10px; }
  .metadata-row .val { color: var(--ink); font-weight: 500; font-size: 11px; }
  .metadata-row .val.match { color: var(--success); display: flex; align-items: center; gap: 4px; }
  .metadata-row .val.warn { color: var(--warn); }
  .metadata-row .val.mono {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--ink-dim);
  }

  .annotation-item {
    padding: 10px 12px;
    background: var(--bg-raised);
    border: 1px solid var(--line);
    border-radius: 8px;
    margin-bottom: 6px;
    cursor: pointer;
    transition: all 0.15s;
    position: relative;
  }
  .annotation-item::before {
    content: '';
    position: absolute;
    left: 0; top: 12px; bottom: 12px;
    width: 3px;
    background: var(--accent);
    border-radius: 0 2px 2px 0;
  }
  .annotation-item:hover { background: var(--bg-panel); }
  .annotation-item .anno-label {
    font-size: 11px;
    color: var(--ink);
    margin-bottom: 3px;
    font-weight: 600;
  }
  .annotation-item .anno-text {
    font-size: 10px;
    color: var(--ink-dim);
    line-height: 1.4;
  }
  .annotation-item .anno-coords {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    color: var(--ink-faint);
    margin-top: 4px;
  }

  .action-button {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    color: var(--ink);
    font-family: inherit;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    margin-bottom: 6px;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 8px;
  }
  .action-button:hover { background: var(--bg-panel); }
  .action-button.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
  }
  .action-button.primary:hover {
    background: var(--accent-bright);
    border-color: var(--accent-bright);
  }
  .action-button .arrow { font-size: 13px; }

  /* STATUS BAR */
  .statusbar {
    background: var(--bg-deep);
    border-top: 1px solid var(--line);
    padding: 0 18px;
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 10px;
    color: var(--ink-dim);
  }
  .status-item { display: flex; align-items: center; gap: 6px; }
  .status-dot { width: 6px; height: 6px; border-radius: 50%; }
  .status-dot.live { background: var(--success); box-shadow: 0 0 6px var(--success); }
  .status-dot.warn { background: var(--warn); }
  .statusbar .right-group { margin-left: auto; display: flex; gap: 18px; }

  ::-webkit-scrollbar { width: 8px; height: 8px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--line-bright); border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

  /* =====================================================================
     UPLOAD / NRBTD / TOASTS — added for X3P + NRBTD integration
     ===================================================================== */

  .topbar-actions { display: flex; gap: 8px; margin-left: 14px; }
  .topbar-btn {
    background: var(--bg-elevated); border: 1px solid var(--line); color: var(--ink);
    font-family: inherit; font-size: 11px; font-weight: 500;
    padding: 6px 12px; border-radius: 5px; cursor: pointer;
    display: inline-flex; align-items: center; gap: 6px;
    transition: background .12s, border-color .12s;
  }
  .topbar-btn:hover { background: var(--bg-panel); border-color: var(--ink-faint); }
  .topbar-btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
  .topbar-btn.primary:hover { background: var(--accent-bright); border-color: var(--accent-bright); }
  .topbar-btn-icon { font-size: 13px; line-height: 1; }

  /* ========================================================================
     Canvas + img fill each layer completamente (object-fit maintiene la
     relación cuadrada del scan dentro del contenedor rectangular).
     ======================================================================== */
  .scan-surface {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
    object-fit: contain; /* no distorsiona scans cuadrados */
  }
  /* Máscara radial con fade suave — el JPG demo trae fondo blanco rectangular
     alrededor del cartucho circular; el gradient lo desvanece hacia el
     viewer-bg sin recorte duro. No aplicamos al <canvas> porque el shader
     WebGL de X3P real ya dibuja transparente/correctamente. */
  img.scan-surface {
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 46%, transparent 60%);
    mask-image: radial-gradient(circle at 50% 50%, #000 46%, transparent 60%);
  }
  img.scan-surface {
    /* cuando no hay src, evitamos el borde/contenido por defecto del browser */
    background: transparent;
  }
  canvas.scan-surface {
    display: none;   /* oculto hasta que se carga un X3P */
    background: transparent;
  }
  canvas.scan-surface.active { display: block; }

  /* Wrapper para zoom/pan/rotación. Siempre rota alrededor del centro
     (center center) — así A y B rotan naturalmente sobre su propio centro. */
  .scan-transform {
    position: absolute;
    inset: 0;
    transform-origin: center center;
    transition: transform 0.08s linear;
    will-change: transform;
    pointer-events: none;
  }
  .scan-transform > canvas,
  .scan-transform > img,
  .scan-transform > .annotation-marker { pointer-events: auto; }
  .scan-layer.panning .scan-transform { cursor: grabbing; transition: none; }
  .scan-layer.rotating .scan-transform { cursor: grabbing; transition: none; }

  /* Empty-pane placeholder (shown when no scan is loaded) */
  .pane-empty {
    position: absolute; inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    pointer-events: none;
    color: var(--ink-dim);
    z-index: 3;
  }
  .pane-empty.hidden { display: none; }
  .pane-empty .pane-empty-icon {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: rgba(91,141,239,0.12);
    border: 1px dashed var(--accent);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
    font-size: 24px;
  }
  .pane-empty .pane-empty-text {
    font-size: 12px;
    text-align: center;
    line-height: 1.5;
  }
  .pane-empty .pane-empty-text strong {
    color: var(--ink);
    font-weight: 500;
  }
  .pane-empty .pane-empty-cta {
    display: flex; gap: 6px;
    pointer-events: auto;
  }
  .pane-empty .pane-empty-cta button {
    padding: 5px 10px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    font-family: inherit;
  }
  .pane-empty .pane-empty-cta button.secondary {
    background: var(--bg-elevated);
    color: var(--ink);
    border: 1px solid var(--line-bright);
  }
  .pane-empty .pane-empty-cta button:hover { filter: brightness(1.15); }

  /* Per-pane source chip: el load-strip de abajo cubre la misma función, así
     que los ocultamos para evitar redundancia visual. Quedan en el DOM para
     que el JS que los usa como ancla no rompa. */
  .pane-source { display: none !important; }
  .pane-source-label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .pane-load-btn {
    background: var(--accent); border: none; color: #fff;
    width: 22px; height: 22px; border-radius: 50%; cursor: pointer;
    font-size: 13px; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: background .12s;
  }
  .pane-load-btn:hover { background: var(--accent-bright); }

  /* Drag-drop overlay */
  .upload-drop-overlay {
    position: absolute; inset: 0;
    background: rgba(91,141,239,0.15);
    border: 2px dashed var(--accent);
    display: none; align-items: center; justify-content: center;
    z-index: 10; pointer-events: none;
  }
  .upload-drop-overlay.active { display: flex; }
  .upload-drop-inner {
    background: var(--bg-panel); border: 1px solid var(--accent);
    border-radius: 10px; padding: 28px 42px; text-align: center; color: var(--ink);
  }
  .upload-drop-icon { font-size: 42px; color: var(--accent); margin-bottom: 8px; }
  .upload-drop-text { font-size: 13px; }
  .upload-drop-text span { display: block; color: var(--ink-dim); font-size: 11px; margin-top: 4px; }

  /* Progress / status toasts */
  .vcm-toasts {
    position: fixed; right: 18px; bottom: 42px;
    display: flex; flex-direction: column-reverse; gap: 8px;
    z-index: 100; pointer-events: none;
  }
  .vcm-toast {
    background: var(--bg-panel); border: 1px solid var(--line);
    border-left: 3px solid var(--accent); color: var(--ink);
    padding: 10px 14px; border-radius: 6px; font-size: 11.5px;
    min-width: 260px; max-width: 380px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.45);
    pointer-events: auto;
    animation: vcm-toast-in .15s ease-out;
  }
  @keyframes vcm-toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
  .vcm-toast-ok { border-left-color: var(--success); }
  .vcm-toast-error { border-left-color: var(--danger); }
  .vcm-toast-progress { min-width: 300px; }
  .vcm-toast-label { font-size: 10px; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
  .vcm-toast-msg { color: var(--ink); margin-bottom: 6px; }
  .vcm-toast-bar { height: 3px; background: var(--bg-deep); border-radius: 2px; overflow: hidden; }
  .vcm-toast-fill { height: 100%; background: var(--accent); transition: width .18s ease-out; }

  /* NRBTD slide-in panel */
  .nrbtd-panel {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: 420px; max-width: 95vw;
    background: var(--bg-raised);
    border-left: 1px solid var(--line);
    box-shadow: -12px 0 32px rgba(0,0,0,0.5);
    transform: translateX(100%);
    transition: transform .2s ease-out;
    z-index: 90;
    display: flex; flex-direction: column; overflow: hidden;
  }
  .nrbtd-panel.open { transform: translateX(0); }

  .nrbtd-header {
    padding: 16px 18px 12px; border-bottom: 1px solid var(--line);
    display: flex; align-items: center; justify-content: space-between;
  }
  .nrbtd-title-main { font-size: 14px; font-weight: 600; color: var(--ink); letter-spacing: 0.02em; }
  .nrbtd-title-sub { display: block; font-size: 10px; color: var(--ink-dim); margin-top: 2px; }
  .nrbtd-close { background: transparent; border: none; color: var(--ink-dim); font-size: 22px; cursor: pointer; padding: 0 8px; line-height: 1; }
  .nrbtd-close:hover { color: var(--ink); }

  .nrbtd-target { padding: 12px 18px; border-bottom: 1px solid var(--line); font-size: 11px; color: var(--ink-dim); }
  .nrbtd-target label { display: block; margin-bottom: 6px; }
  .nrbtd-target-radio { display: flex; gap: 14px; color: var(--ink); }
  .nrbtd-target-radio label { display: inline-flex; align-items: center; gap: 6px; margin: 0; cursor: pointer; }

  .nrbtd-filters {
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    max-height: 60vh;
    overflow-y: auto;
  }
  .nrbtd-filters-grid { display: flex; flex-direction: column; gap: 12px; }
  /* Grid 2-col denso para encajar los 8-10 filtros sin scroll excesivo */
  .nrbtd-fields-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 10px;
  }
  .nrbtd-section-title {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-dim);
    margin-bottom: 8px;
  }
  .nrbtd-field { display: flex; flex-direction: column; gap: 3px; font-size: 10.5px; color: var(--ink-dim); }
  .nrbtd-field > span { line-height: 1.25; min-height: 13px; }
  .nrbtd-field select {
    background: var(--bg-deep); border: 1px solid var(--line); color: var(--ink);
    padding: 5px 6px; border-radius: 4px; font-size: 11.5px; font-family: inherit;
    max-width: 100%;
  }
  .nrbtd-field select:focus { outline: 1px solid var(--accent); border-color: var(--accent); }
  .nrbtd-checks { display: flex; gap: 14px; margin-top: 8px; flex-wrap: wrap; }
  .nrbtd-check { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--ink); cursor: pointer; }

  /* Sección colapsable de filtros avanzados. <details> nativo para no sumar JS. */
  .nrbtd-advanced {
    border: 1px solid var(--line);
    border-radius: 5px;
    background: var(--bg-deep);
  }
  .nrbtd-advanced > summary {
    cursor: pointer;
    list-style: none;
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 500;
    color: var(--ink);
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .nrbtd-advanced > summary::-webkit-details-marker { display: none; }
  .nrbtd-advanced > summary::before {
    content: '▸';
    font-size: 10px;
    color: var(--ink-dim);
    margin-right: 8px;
    transition: transform 120ms ease;
  }
  .nrbtd-advanced[open] > summary::before { transform: rotate(90deg); display: inline-block; }
  .nrbtd-advanced[open] > summary { border-bottom: 1px solid var(--line); }
  .nrbtd-advanced-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 18px;
    padding: 0 6px;
    border-radius: 9px;
    background: var(--line);
    color: var(--ink-dim);
    font-size: 10px;
    font-weight: 600;
  }
  .nrbtd-section-body { padding: 10px 12px; }
  .nrbtd-hint { font-size: 11px; color: var(--ink-dim); font-style: italic; padding: 4px; }

  .nrbtd-actions { display: flex; gap: 8px; margin-top: 14px; }
  .nrbtd-actions button {
    padding: 8px 14px; border-radius: 5px; border: 1px solid var(--line);
    font-family: inherit; font-size: 11.5px; font-weight: 500; cursor: pointer;
  }
  .nrbtd-actions .btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
  .nrbtd-actions .btn-primary:hover { background: var(--accent-bright); border-color: var(--accent-bright); }
  .nrbtd-actions .btn-ghost { background: transparent; color: var(--ink-dim); }
  .nrbtd-actions .btn-ghost:hover { color: var(--ink); border-color: var(--ink-faint); }

  .nrbtd-results { flex: 1; overflow-y: auto; padding: 12px 18px 20px; }
  .nrbtd-empty, .nrbtd-loading, .nrbtd-error { color: var(--ink-dim); font-size: 12px; padding: 16px 0; }
  .nrbtd-error { color: var(--danger); }
  .nrbtd-results-head { font-size: 10px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-dim); margin-bottom: 8px; }

  .nrbtd-result {
    background: var(--bg-panel); border: 1px solid var(--line);
    border-radius: 6px; padding: 10px 12px; margin-bottom: 8px;
  }
  .nrbtd-result-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
  .nrbtd-result-name { font-size: 12.5px; font-weight: 500; color: var(--ink); flex: 1; }
  .nrbtd-result-badges { display: flex; gap: 4px; }
  .badge { font-size: 9.5px; padding: 2px 6px; border-radius: 3px; background: var(--bg-deep); color: var(--ink-dim); white-space: nowrap; }
  .badge-nist { background: var(--accent-dim); color: var(--accent-bright); }
  .nrbtd-result-meta { font-size: 10.5px; color: var(--ink-dim); margin-top: 6px; display: flex; gap: 8px; flex-wrap: wrap; }
  .nrbtd-result-actions { display: flex; gap: 8px; align-items: center; margin-top: 8px; justify-content: flex-end; }
  .nrbtd-result-actions a { font-size: 10.5px; color: var(--ink-dim); text-decoration: none; }
  .nrbtd-result-actions a:hover { color: var(--accent-bright); }
  .btn-small {
    background: var(--accent); color: #fff; border: none;
    padding: 5px 10px; font-size: 10.5px; border-radius: 4px; cursor: pointer; font-family: inherit;
  }
  .btn-small:hover { background: var(--accent-bright); }

  .nrbtd-manifest-head {
    display: flex; flex-direction: column; gap: 6px;
    margin-bottom: 10px; padding-bottom: 10px; border-bottom: 1px solid var(--line);
  }
  .nrbtd-manifest-head h3 { font-size: 13px; font-weight: 600; color: var(--ink); margin: 0; }
  .nrbtd-manifest-meta { font-size: 10.5px; color: var(--ink-dim); }
  .nrbtd-back { align-self: flex-start; background: transparent; border: none; color: var(--ink-dim); font-size: 11px; cursor: pointer; padding: 0; }
  .nrbtd-back:hover { color: var(--ink); }

  .nrbtd-file-filter {
    width: 100%; padding: 6px 10px; background: var(--bg-deep);
    border: 1px solid var(--line); border-radius: 4px; color: var(--ink);
    font-family: inherit; font-size: 11.5px; margin-bottom: 8px;
  }
  .nrbtd-file-list { display: flex; flex-direction: column; gap: 4px; }
  .nrbtd-file {
    display: flex; justify-content: space-between; align-items: center; gap: 8px;
    padding: 6px 10px; background: var(--bg-panel); border: 1px solid var(--line); border-radius: 4px;
  }
  .nrbtd-file-name { font-size: 11px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }

  .nrbtd-progress { padding: 16px 0; }
  .nrbtd-progress-bar { height: 4px; background: var(--bg-deep); border-radius: 2px; overflow: hidden; }
  .nrbtd-progress-fill { height: 100%; background: var(--accent); transition: width .18s ease-out; }
  .nrbtd-progress-text { color: var(--ink-dim); font-size: 11px; margin-top: 8px; }

  /* =====================================================================
     Sidebar sliders: small "Reiniciar" button attached to the row
     ===================================================================== */
  .slider-row .slider-reset {
    padding: 2px 6px;
    font-size: 9.5px;
    background: transparent;
    border: 1px solid var(--line);
    color: var(--ink-dim);
    border-radius: 3px;
    cursor: pointer;
    font-family: inherit;
  }
  .slider-row .slider-reset:hover { color: var(--ink); border-color: var(--ink-faint); }

  /* Disabled top-bar nav items — muestran chip "Próximamente" para que no
     parezcan rotos. Usamos ::after para el chip en vez de sumar markup. */
  .nav-main .nav-disabled {
    color: var(--ink-faint);
    cursor: not-allowed;
    pointer-events: none;
    position: relative;
    padding-right: 70px;
  }
  .nav-main .nav-disabled::after {
    content: 'Próximamente';
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    font-size: 8.5px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 10px;
    background: var(--bg-raised);
    color: var(--ink-faint);
    border: 1px solid var(--line);
  }

  /* =====================================================================
     Topbar dropdown (Cargar X3P)
     ===================================================================== */
  .topbar-dropdown { position: relative; display: inline-block; }
  .topbar-dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background: var(--bg-panel);
    border: 1px solid var(--line-bright);
    border-radius: 6px;
    min-width: 200px;
    max-width: calc(100vw - 16px);
    padding: 4px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
    display: none;
    z-index: 50;
  }
  .topbar-dropdown.open .topbar-dropdown-menu { display: block; }
  .topbar-dropdown-menu button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 7px 10px;
    background: transparent;
    border: none;
    color: var(--ink);
    font-size: 11.5px;
    font-family: inherit;
    cursor: pointer;
    border-radius: 4px;
  }
  .topbar-dropdown-menu button:hover { background: var(--bg-elevated); }
  .topbar-dropdown-sep {
    height: 1px;
    background: var(--line);
    margin: 4px 2px;
  }

  /* =====================================================================
     Panel accordion: collapsed by default, chip on header
     ===================================================================== */
  .panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    position: relative;
    padding-right: 26px !important;
  }
  .panel-header-static { cursor: default; }
  .panel-header-static::after { display: none !important; }
  .panel-title {
    flex: 0 1 auto;
    min-width: 0;
  }
  .panel-chip {
    flex: 1 1 auto;
    text-align: right;
    font-size: 10px;
    color: var(--ink-dim);
    font-weight: 400;
    letter-spacing: 0;
    text-transform: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
    opacity: 0;
    transition: opacity 0.12s;
  }
  .panel.collapsed .panel-chip { opacity: 1; }
  .panel-header::after {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%) rotate(0deg);
    transition: transform 0.15s ease;
  }
  .panel.collapsed .panel-header::after { transform: translateY(-50%) rotate(-90deg); }

  .panel-compact .panel-body { padding-top: 4px !important; }

  /* =====================================================================
     Side switch: "A ← B" or "B ← A" (posición en pantalla)
     ===================================================================== */
  .side-switch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    background: var(--bg-deep);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 3px;
  }
  .side-switch-opt {
    padding: 6px 8px;
    font-size: 11px;
    text-align: center;
    color: var(--ink-dim);
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.12s, color 0.12s;
    font-weight: 500;
  }
  .side-switch-opt.active {
    background: var(--accent);
    color: #fff;
  }
  .side-switch-opt:not(.active):hover {
    color: var(--ink);
    background: var(--bg-elevated);
  }

  /* =====================================================================
     Placeholder central (cuando ambos panes están vacíos en split/overlay)
     ===================================================================== */
  .canvas-empty-central {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    background: var(--chip-bg-solid);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--line-bright);
    border-radius: 10px;
    padding: 22px 28px;
    max-width: 360px;
  }
  .canvas-empty-central.hidden { display: none; }
  .canvas-empty-central .pane-empty-icon {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: rgba(91, 141, 239, 0.15);
    border: 1px dashed var(--accent);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
    font-size: 22px;
  }
  .canvas-empty-central .pane-empty-text {
    font-size: 12.5px;
    text-align: center;
    color: var(--ink);
    line-height: 1.6;
  }
  .canvas-empty-central .pane-empty-text strong { display: block; color: var(--ink); margin-bottom: 3px; }
  .canvas-empty-central .pane-empty-text br + * { color: var(--ink-dim); font-size: 11px; }
  .canvas-empty-central .pane-empty-cta {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .canvas-empty-central .pane-empty-cta button {
    padding: 6px 12px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 11px;
    font-family: inherit;
    cursor: pointer;
  }
  .canvas-empty-central .pane-empty-cta button.secondary {
    background: var(--bg-elevated);
    color: var(--ink);
    border: 1px solid var(--line-bright);
  }

  /* Per-pane placeholder (split-friendly: stack vertical y compacto) */
  .pane-empty {
    padding: 12px;
    gap: 8px;
  }
  .pane-empty .pane-empty-icon {
    width: 38px; height: 38px;
    font-size: 18px;
  }
  .pane-empty .pane-empty-text {
    font-size: 11px;
    line-height: 1.4;
  }
  .pane-empty .pane-empty-text strong {
    display: block;
    font-size: 13px;
    color: var(--ink);
    margin-bottom: 2px;
  }
  .pane-empty .pane-empty-text span {
    color: var(--ink-dim);
    font-size: 10px;
  }
  .pane-empty .pane-empty-cta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
    max-width: 180px;
  }
  .pane-empty .pane-empty-cta button {
    width: 100%;
    padding: 6px 10px;
    font-size: 11px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    text-align: center;
  }
  .pane-empty .pane-empty-cta button.secondary {
    background: var(--bg-elevated);
    color: var(--ink);
    border: 1px solid var(--line-bright);
  }
  .pane-empty .pane-empty-cta button:hover { filter: brightness(1.15); }

  /* Central placeholder: grid de 2 columnas (A / B) */
  .canvas-empty-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 4px;
  }
  .canvas-empty-title strong {
    display: block;
    color: var(--ink);
    font-size: 13px;
    margin-bottom: 2px;
  }
  .canvas-empty-title span {
    color: var(--ink-dim);
    font-size: 11px;
  }
  .canvas-empty-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    width: 100%;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }
  .canvas-empty-side-title {
    font-size: 10px;
    color: var(--ink-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
    text-align: center;
  }
  .canvas-empty-side-buttons {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .canvas-empty-side-buttons button {
    padding: 6px 10px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 11px;
    font-family: inherit;
    cursor: pointer;
  }
  .canvas-empty-side-buttons button.secondary {
    background: var(--bg-elevated);
    color: var(--ink);
    border: 1px solid var(--line-bright);
  }
  .canvas-empty-side-buttons button:hover { filter: brightness(1.15); }

  /* =====================================================================
     Load strip — barra discreta debajo del viewer para cargar A/B sin
     bloquear la imagen. Reemplaza al placeholder central flotante.
     ===================================================================== */
  .load-strip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 7px 14px;
    background: var(--bg-raised);
    border-top: 1px solid var(--line);
    font-size: 11px;
    color: var(--ink-dim);
    flex-wrap: wrap;
  }
  .load-strip.hidden { display: none; }
  .load-strip-label {
    font-size: 10.5px;
    color: var(--ink-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-right: 6px;
  }
  .load-strip-actions { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
  .load-strip-btn {
    padding: 4px 10px;
    background: var(--bg-elevated);
    border: 1px solid var(--line-bright);
    color: var(--ink);
    font-family: inherit;
    font-size: 11px;
    border-radius: 4px;
    cursor: pointer;
  }
  .load-strip-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
  }
  .load-strip-btn.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
  }
  .load-strip-btn.primary:hover {
    background: var(--accent-bright);
    border-color: var(--accent-bright);
  }
  .load-strip-sep { color: var(--ink-faint); padding: 0 4px; }

  /* Shortcuts help modal (tecla ?) */
  #shortcuts-help {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
  }
  .shortcuts-help-inner {
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    border-radius: 8px;
    padding: 18px 22px;
    min-width: 340px;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  }
  .shortcuts-help-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 12px;
  }
  .shortcuts-help-head h3 {
    margin: 0;
    font-size: 14px;
    color: var(--ink);
  }
  #shortcuts-help-close {
    background: transparent;
    border: none;
    color: var(--ink-dim);
    font-size: 22px;
    cursor: pointer;
    padding: 0 6px;
    line-height: 1;
  }
  #shortcuts-help-close:hover { color: var(--ink); }
  .shortcuts-help-inner table { border-collapse: collapse; width: 100%; font-size: 12px; }
  .shortcuts-help-inner td { padding: 5px 8px; color: var(--ink); }
  .shortcuts-help-inner td.key { text-align: right; width: 90px; }
  .shortcuts-help-inner kbd {
    background: var(--bg-deep);
    border: 1px solid var(--line-bright);
    border-bottom-width: 2px;
    border-radius: 3px;
    padding: 2px 6px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10.5px;
    color: var(--ink);
  }

  /* =====================================================================
     Settings modal (click en avatar) — configuración de perito + sesión
     ===================================================================== */
  .settings-modal {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
  }
  .settings-modal.hidden { display: none; }
  .settings-card {
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    border-radius: 10px;
    padding: 20px 24px;
    min-width: 380px;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  }
  .settings-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 14px;
  }
  .settings-head h3 { margin: 0; font-size: 14px; color: var(--ink); }
  #settings-close {
    background: transparent; border: none; color: var(--ink-dim);
    font-size: 22px; cursor: pointer; padding: 0 6px; line-height: 1;
  }
  #settings-close:hover { color: var(--ink); }
  .settings-body {
    display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px;
  }
  .settings-body label {
    display: flex; flex-direction: column; gap: 4px;
    font-size: 11px; color: var(--ink-dim);
  }
  .settings-body input {
    background: var(--bg-deep);
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 7px 10px; border-radius: 4px;
    font-family: inherit; font-size: 12px;
  }
  .settings-body input:focus {
    outline: 1px solid var(--accent); border-color: var(--accent);
  }
  .settings-note {
    font-size: 10.5px; color: var(--ink-faint); margin: 4px 0 0;
    line-height: 1.5;
  }
  .settings-note code {
    background: var(--bg-deep); padding: 1px 5px; border-radius: 3px;
    font-size: 10px; color: var(--ink-dim);
  }
  .settings-actions { display: flex; justify-content: flex-end; gap: 8px; }
  .settings-actions button {
    padding: 7px 14px; border-radius: 5px;
    font-family: inherit; font-size: 11.5px; font-weight: 500;
    cursor: pointer;
    background: var(--bg-elevated);
    border: 1px solid var(--line-bright); color: var(--ink);
  }
  .settings-actions .settings-primary {
    background: var(--accent); border-color: var(--accent); color: #fff;
  }
  .settings-actions .settings-primary:hover { background: var(--accent-bright); border-color: var(--accent-bright); }

  /* Avatar clickable en topbar — el posicionamiento (flex/margin-left:auto)
     vive en la regla base del .topbar para evitar duplicados. */
  button.user-area {
    background: transparent; border: none; cursor: pointer;
    padding: 0; display: flex; align-items: center;
  }
  button.user-area:hover .user-avatar { filter: brightness(1.2); }

  /* Anotaciones (markers sobre el canvas) */
  .annotation-marker {
    position: absolute;
    width: 22px; height: 22px;
    border-radius: 50%;
    background: rgba(245, 158, 11, 0.85);
    border: 2px solid #fff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
    color: #000;
    font-weight: 600;
    font-size: 11px;
    display: flex; align-items: center; justify-content: center;
    transform: translate(-50%, -50%);
    pointer-events: auto;
    cursor: help;
    z-index: 5;
    font-family: ui-sans-serif, system-ui, sans-serif;
  }
  .annotation-marker:hover {
    background: rgba(245, 158, 11, 1);
    transform: translate(-50%, -50%) scale(1.15);
  }
  .annotation-item {
    padding: 8px 10px;
    border-bottom: 1px solid var(--line);
    font-size: 11px;
    color: var(--ink);
  }
  .annotation-item:last-child { border-bottom: none; }
  .annotation-label {
    font-weight: 600; color: var(--ink);
    display: flex; align-items: center; justify-content: space-between;
  }
  .annotation-label .anno-side {
    font-size: 9.5px; color: var(--accent-bright); font-weight: 500;
    background: var(--accent-dim); padding: 1px 6px; border-radius: 3px;
  }
  .annotation-label .anno-del {
    background: transparent; border: none; color: var(--ink-faint);
    cursor: pointer; font-size: 12px; padding: 0 4px;
  }
  .annotation-label .anno-del:hover { color: var(--danger); }
  .annotation-text {
    color: var(--ink-dim); margin: 3px 0; font-size: 10.5px;
  }
  .annotation-coords {
    color: var(--ink-faint); font-size: 10px; font-family: 'JetBrains Mono', monospace;
  }

  /* =====================================================================
     TOOL MODES + overlays (medición / alineación / ROI)
     ===================================================================== */
  /* Cursores según modo activo */
  .viewer-area[data-mode="measure"] .scan-layer { cursor: crosshair; }
  .viewer-area[data-mode="align"]   .scan-layer { cursor: copy; }
  .viewer-area[data-mode="roi"]     .scan-layer { cursor: cell; }
  /* Modo normal: el cursor cambia al agarrar. Por default queda "grab" como
     hint visual de que el scan es interactivo (click izq rota, der pansea). */
  .viewer-area[data-mode="normal"] .scan-layer,
  .viewer-area[data-mode="normal"] .scan-surface { cursor: grab; }
  .viewer-area[data-mode="normal"] .half.rotating .scan-layer,
  .viewer-area[data-mode="normal"] .half.rotating .scan-surface,
  .viewer-area[data-mode="normal"] .half.panning .scan-layer,
  .viewer-area[data-mode="normal"] .half.panning .scan-surface { cursor: grabbing; }

  /* SVG overlay común (mediciones, ROI) */
  .overlay-svg {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 6;
  }
  .overlay-svg line.measure-line {
    stroke: #38bdf8;
    stroke-width: 1.6;
    filter: drop-shadow(0 0 2px rgba(0,0,0,0.75));
  }
  .overlay-svg circle.measure-end {
    fill: #38bdf8;
    stroke: #fff;
    stroke-width: 1;
  }
  .overlay-svg text.measure-label {
    fill: #fff;
    font: 600 10px 'JetBrains Mono', ui-monospace, monospace;
    paint-order: stroke;
    stroke: rgba(0,0,0,0.85);
    stroke-width: 3;
  }
  .overlay-svg rect.roi-rect {
    fill: rgba(91,141,239,0.08);
    stroke: var(--accent);
    stroke-width: 1.5;
    stroke-dasharray: 6 4;
  }
  .overlay-svg text.roi-label {
    fill: var(--accent-bright);
    font: 600 11px ui-sans-serif, system-ui, sans-serif;
    paint-order: stroke;
    stroke: rgba(0,0,0,0.75);
    stroke-width: 3;
  }

  /* Marker de anchor de alineación (círculos numerados por pareja) */
  .align-anchor {
    position: absolute;
    width: 18px; height: 18px;
    border-radius: 50%;
    border: 2px solid #fff;
    color: #fff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    transform: translate(-50%, -50%);
    pointer-events: auto;
    cursor: help;
    z-index: 7;
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
  }
  /* Color por par: cada pareja (anchor A + anchor B) comparte color */
  .align-anchor[data-pair="0"] { background: #ef4444; }
  .align-anchor[data-pair="1"] { background: #f97316; }
  .align-anchor[data-pair="2"] { background: #22c55e; }
  .align-anchor[data-pair="3"] { background: #06b6d4; }
  .align-anchor[data-pair="4"] { background: #a855f7; }
  .align-anchor[data-pair="5"] { background: #ec4899; }

  /* Panel: listado de pares / mediciones / ROIs */
  .align-pairs-list, #measurements-body .m-list, #roi-body .roi-list {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .align-pair-row, .m-row, .roi-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 8px;
    background: var(--bg-panel);
    border: 1px solid var(--line);
    border-radius: 4px;
    font-size: 10.5px;
    color: var(--ink);
    gap: 6px;
  }
  .align-pair-row .pair-badge,
  .m-row .m-badge,
  .roi-row .roi-badge {
    width: 14px; height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
  }
  .align-pair-row .pair-coords,
  .m-row .m-val,
  .roi-row .roi-name {
    flex: 1;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--ink);
  }
  .align-pair-row button.del,
  .m-row button.del,
  .roi-row button.del {
    background: transparent;
    border: none;
    color: var(--ink-faint);
    cursor: pointer;
    padding: 0 4px;
    font-size: 13px;
  }
  .align-pair-row button.del:hover,
  .m-row button.del:hover,
  .roi-row button.del:hover { color: var(--danger); }

  .align-actions {
    display: flex;
    gap: 6px;
    margin-top: 10px;
  }
  .align-actions button {
    flex: 1;
    padding: 6px 10px;
    font-size: 11px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
  }
  .align-actions button:disabled {
    background: var(--bg-elevated);
    color: var(--ink-faint);
    cursor: not-allowed;
  }
  .align-actions button.ghost {
    background: transparent;
    color: var(--ink-dim);
    border: 1px solid var(--line-bright);
  }
  .align-actions button.ghost:hover { color: var(--ink); }

  /* Tool-mode active highlight más prominente */
  .tool-group[role="radiogroup"] .tool.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
  }

  /* Campos de datos forenses y conclusión */
  .forensic-hint {
    font-size: 10.5px;
    color: var(--ink-dim);
    line-height: 1.5;
    padding: 6px 0;
  }
  .forensic-hint kbd {
    background: var(--bg-deep);
    border: 1px solid var(--line-bright);
    padding: 1px 5px;
    border-radius: 3px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 9.5px;
  }
  .forensic-field {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-bottom: 8px;
    font-size: 10.5px;
    color: var(--ink-dim);
  }
  .forensic-field span { text-transform: uppercase; letter-spacing: 0.04em; font-size: 9.5px; }
  .forensic-field input,
  .forensic-field select,
  .forensic-field textarea {
    background: var(--bg-deep);
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 5px 8px;
    border-radius: 3px;
    font-family: inherit;
    font-size: 11px;
    width: 100%;
  }
  .forensic-field input:focus,
  .forensic-field select:focus,
  .forensic-field textarea:focus {
    outline: 1px solid var(--accent);
    border-color: var(--accent);
  }
  .forensic-field textarea { resize: vertical; min-height: 80px; font-family: 'JetBrains Mono', monospace; font-size: 10.5px; }

  /* =====================================================================
     LOGIN SCREEN
     ===================================================================== */
  #vcm-login-screen, #vcm-pwd-change {
    position: fixed; inset: 0;
    background: linear-gradient(135deg, #0a0a0b 0%, #131315 100%);
    z-index: 2000;
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
  }
  .login-card {
    background: var(--bg-raised);
    border: 1px solid var(--line-bright);
    border-radius: 12px;
    padding: 32px 36px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 40px 100px rgba(0,0,0,0.6);
  }
  .login-brand {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
  }
  .login-brand .brand-logo {
    width: 40px; height: 40px;
    background: var(--accent);
    border-radius: 8px;
    margin: 0 auto 12px;
  }
  .login-brand h1 { font-size: 20px; margin: 0 0 4px; color: var(--ink); }
  .login-brand p { font-size: 11px; margin: 0; color: var(--ink-dim); }
  .login-card form { display: flex; flex-direction: column; gap: 12px; }
  .login-card label { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.05em; }
  .login-card input {
    background: var(--bg-deep);
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 10px 12px; border-radius: 6px;
    font-family: inherit; font-size: 13px;
  }
  .login-card input:focus { outline: 1px solid var(--accent); border-color: var(--accent); }
  .login-card button[type="submit"] {
    background: var(--accent); color: #fff; border: none;
    padding: 11px; border-radius: 6px;
    font-family: inherit; font-size: 13px; font-weight: 600;
    cursor: pointer;
    margin-top: 6px;
  }
  .login-card button[type="submit"]:hover { background: var(--accent-bright); }
  .login-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: #fecaca;
    padding: 8px 12px;
    border-radius: 5px;
    font-size: 11.5px;
    margin-top: 4px;
  }
  .login-help { color: var(--ink-faint); font-size: 10.5px; text-align: center; margin: 10px 0 0; }
  .login-help strong { color: var(--ink-dim); }

  /* =====================================================================
     VIEW CONTAINERS — Casos list, Audit log
     ===================================================================== */
  .view-container {
    grid-column: 1 / -1;
    padding: 24px 32px;
    overflow-y: auto;
    background: var(--bg);
  }
  .cases-toolbar {
    display: flex; gap: 10px; align-items: center; margin-bottom: 24px;
  }
  .cases-toolbar input[type="search"] {
    flex: 1;
    background: var(--bg-deep);
    border: 1px solid var(--line-bright);
    color: var(--ink);
    padding: 9px 14px; border-radius: 6px;
    font-family: inherit; font-size: 13px;
  }
  .cases-toolbar select {
    background: var(--bg-deep);
    border: 1px solid var(--line-bright);
    color: var(--ink);
    padding: 9px 12px; border-radius: 6px; font-size: 12px;
  }
  .btn-primary {
    background: var(--accent); color: #fff; border: none;
    padding: 9px 16px; border-radius: 6px;
    font-family: inherit; font-size: 12.5px; font-weight: 500;
    cursor: pointer;
  }
  .btn-primary:hover { background: var(--accent-bright); }

  .cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 14px;
  }
  .case-card {
    background: var(--bg-raised);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px 18px;
    transition: border-color 0.15s, transform 0.15s;
  }
  .case-card:hover { border-color: var(--accent-dim); transform: translateY(-1px); }
  .case-card header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 10px;
  }
  .case-num {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-bright); font-size: 12.5px; font-weight: 600;
  }
  .case-status {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }
  .case-status-open { background: rgba(34,197,94,0.15); color: #86efac; }
  .case-status-in-progress { background: rgba(245,158,11,0.15); color: #fcd34d; }
  .case-status-closed { background: rgba(91,141,239,0.15); color: #93c5fd; }
  .case-status-archived { background: var(--bg-deep); color: var(--ink-faint); }
  /* Override de colores pálidos para modo claro — el texto saturado se lee
     mejor sobre fondo claro que los tonos pastel del modo oscuro. */
  [data-theme="light"] .case-status-open { color: #15803d; }
  [data-theme="light"] .case-status-in-progress { color: #92400e; }
  [data-theme="light"] .case-status-closed { color: #1d4ed8; }

  /* Backdrops de modales: en light mode bajamos la opacidad del velo negro
     para que no se vea excesivamente pesado sobre la interfaz clara. */
  [data-theme="light"] #shortcuts-help,
  [data-theme="light"] .settings-modal {
    background: rgba(20, 22, 28, 0.35);
  }
  [data-theme="light"] .shortcuts-help-inner,
  [data-theme="light"] .settings-card,
  [data-theme="light"] .nrbtd-panel {
    box-shadow: 0 12px 32px rgba(20, 22, 28, 0.15);
  }
  .case-card h3 { font-size: 14px; margin: 0 0 10px; color: var(--ink); line-height: 1.4; }
  .case-card dl {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 4px 10px;
    margin: 0 0 12px;
    font-size: 11px;
  }
  .case-card dt { color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.04em; font-size: 9.5px; }
  .case-card dd { margin: 0; color: var(--ink); }
  .case-card footer { display: flex; justify-content: flex-end; }
  .case-card footer button {
    background: transparent; color: var(--accent-bright); border: 1px solid var(--accent-dim);
    padding: 5px 12px; border-radius: 5px;
    font-family: inherit; font-size: 11.5px; cursor: pointer;
  }
  .case-card footer button:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

  .cases-empty, .cases-loading, .cases-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--ink-dim);
  }
  .cases-empty .btn-primary { margin-top: 12px; }
  .cases-error { color: var(--danger); }

  /* Audit table */
  .audit-toolbar {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px;
  }
  .audit-toolbar h2 { font-size: 18px; margin: 0; color: var(--ink); }
  .audit-toolbar span { color: var(--ink-dim); font-size: 11px; }
  .audit-table { width: 100%; border-collapse: collapse; font-size: 11.5px; }
  .audit-table th, .audit-table td {
    padding: 7px 10px;
    text-align: left;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
  }
  .audit-table th { background: var(--bg-raised); color: var(--ink-dim); font-weight: 500; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.04em; }
  .audit-table tr:hover { background: var(--bg-raised); }
  .audit-table code { color: var(--accent-bright); font-family: 'JetBrains Mono', monospace; font-size: 11px; }
  .audit-table .mono { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--ink-dim); }
  .audit-table td.details { color: var(--ink-dim); font-family: 'JetBrains Mono', monospace; font-size: 10px; max-width: 350px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

  /* (Reglas de layout del topbar consolidadas arriba; eliminamos duplicados.) */

  /* Controles que solo funcionan con X3P cargado: grayed out sin overlay
     que pisaba los sliders. El banner informativo se inyecta desde JS. */
  .shader-only { transition: opacity 0.2s; }
  .shader-only.disabled {
    opacity: 0.35;
    pointer-events: none;
    cursor: not-allowed;
  }
  /* Banner consolidado arriba del panel de Luz cuando no hay scan */
  .shader-hint {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--warn);
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 10.5px;
    margin-bottom: 10px;
    text-align: center;
  }
  .shader-hint.hidden { display: none; }

  /* =====================================================================
     FASE 2 — Histograma + panel "Visualización avanzada"
     ===================================================================== */
  .histogram-container {
    background: var(--bg-deep);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 6px 8px 4px;
    margin-bottom: 6px;
  }
  .histogram-svg {
    display: block;
    width: 100%;
    height: 60px;
    background: transparent;
  }
  .histogram-svg .bar { fill: var(--accent); opacity: 0.85; }
  .histogram-svg .bar.dim { fill: var(--ink-faint); opacity: 0.4; }
  .histogram-svg .window-rect {
    fill: rgba(245, 158, 11, 0.15);
    stroke: var(--warn);
    stroke-width: 0.7;
  }
  .histogram-range {
    display: flex;
    justify-content: space-between;
    font-family: 'JetBrains Mono', monospace;
    font-size: 9.5px;
    color: var(--ink-dim);
    margin-top: 2px;
  }

  /* Grilla visible en el gizmo cuando "Mostrar grilla" está activo */
  .gizmo.show-grid::before {
    content: '';
    position: absolute;
    inset: 6%;
    background-image:
      linear-gradient(to right, rgba(91,141,239,0.25) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(91,141,239,0.25) 1px, transparent 1px);
    background-size: 20% 20%;
    pointer-events: none;
    border-radius: 50%;
    z-index: 1;
  }
  /* Setpoints más visibles cuando snap está activo */
  .gizmo.snap-active .gizmo-setpoint {
    opacity: 1 !important;
    width: 10px; height: 10px;
    background: var(--accent) !important;
    box-shadow: 0 0 0 2px rgba(91,141,239,0.35), 0 0 8px rgba(91,141,239,0.6);
  }
  /* Línea ecuatorial clara cuando "solo horizontal" está activo */
  .gizmo.rotate-plane::after {
    content: '';
    position: absolute;
    left: 8%; right: 8%;
    top: 50%;
    height: 2px;
    background: linear-gradient(to right, transparent, rgba(245,158,11,0.7), transparent);
    transform: translateY(-1px);
    pointer-events: none;
    z-index: 2;
    border-radius: 1px;
  }

  /* Safari/WebKit backdrop-filter prefixes */
  .pane-source, .nrbtd-panel {
    -webkit-backdrop-filter: blur(8px);
  }

  /* Loupe (magnifier) */
  .loupe {
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    box-shadow: 0 0 0 1px #000, 0 10px 30px rgba(0,0,0,0.6);
    pointer-events: none;
    background-color: #000;
    background-repeat: no-repeat;
    z-index: 8;
    display: none;
    overflow: hidden;
  }
  .loupe.active { display: block; }
  .loupe::after {
    content: '';
    position: absolute;
    inset: 48%;
    border: 1px solid rgba(91,141,239,0.5);
    border-radius: 50%;
    pointer-events: none;
  }
  .loupe-crosshair {
    position: absolute;
    inset: 0;
    pointer-events: none;
  }
  .loupe-crosshair::before,
  .loupe-crosshair::after {
    content: '';
    position: absolute;
    background: rgba(91,141,239,0.3);
  }
  .loupe-crosshair::before { left: 0; right: 0; top: 50%; height: 1px; }
  .loupe-crosshair::after { top: 0; bottom: 0; left: 50%; width: 1px; }

  /* NRBTD suggestion hint card */
  .nrbtd-suggestion {
    background: linear-gradient(135deg, rgba(91,141,239,0.12), rgba(91,141,239,0.04));
    border: 1px solid var(--accent-dim);
    border-radius: 6px;
    padding: 10px 12px;
    margin: 0 18px 12px;
    font-size: 11px;
    color: var(--ink);
  }
  .nrbtd-suggestion-title {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-bright);
    margin-bottom: 6px;
  }
  .nrbtd-suggestion-body { color: var(--ink-dim); line-height: 1.5; margin-bottom: 8px; }
  .nrbtd-suggestion-body strong { color: var(--ink); font-weight: 500; }
  .nrbtd-suggestion-apply {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 4px 10px;
    border-radius: 3px;
    font-size: 10.5px;
    cursor: pointer;
    font-family: inherit;
  }
  .nrbtd-suggestion-apply:hover { background: var(--accent-bright); }
