/* =====================================================================
   Theme tokens
   --------------------------------------------------------------------- */
:root {
  color-scheme: light;

  /* Chrome / surfaces */
  --bg: #121821;
  --surface: #1d2634;
  --surface-2: #131b27;
  --surface-3: #2a3447;
  --surface-elev: rgba(29, 38, 52, 0.95);
  --border: #2e3a4d;
  --border-soft: rgba(46, 58, 77, 0.6);
  --border-strong: #36465c;
  --shadow-elev: 0 18px 38px rgba(0, 0, 0, 0.55);
  --shadow-soft: 0 8px 22px rgba(0, 0, 0, 0.45);
  --shadow-fab: 0 8px 22px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.04);

  /* Text */
  --text: #e8eef7;
  --text-subtle: #cfd6e4;
  --text-muted: #8c9bb5;
  --text-dim: #6f88b8;

  /* Accents */
  --accent: #29a0ff;
  --accent-soft: #6fc4ff;
  --accent-warm: #f0a060;
  --accent-tint: rgba(41, 160, 255, 0.08);
  --accent-glow: rgba(41, 160, 255, 0.35);
  --danger: #d3502e;
  --danger-hover: #ec5e36;
  --danger-tint: rgba(211, 80, 46, 0.12);

  /* Inputs */
  --input-bg: #131b27;
  --input-border: #2e3a4d;
  --input-focus: #29a0ff;

  /* Canvas (2D drawing) */
  --canvas-bg: #0f1724;
  --canvas-grid: #22314a;
  --canvas-line: #6fc4ff;
  --canvas-line-preview: #9fd9ff;
  --canvas-line-fill-1: #33a3ff;
  --canvas-line-fill-2: #116bb3;
  --canvas-label-bg: #0b1220;
  --canvas-label-text-light: #ffffff;
  --canvas-label-text-dark: #0b1220;
  --canvas-arc-mark: #7ed1ff;
  --canvas-arc-mark-stroke: #0b1220;
  --canvas-variant-len: #1e6dbb;
  --canvas-variant-cov: #b5750a;
  --canvas-variant-byLen-fill: #33a3ff;
  --canvas-variant-byCov-fill: #f59e0b;
  --canvas-dashed-strong: rgba(11, 18, 32, 0.85);
  --canvas-dashed-soft: rgba(11, 18, 32, 0.6);
  --canvas-dashed-faint: rgba(11, 18, 32, 0.45);
  --canvas-cursor-dash: #8c9bb5;
  --canvas-selection-halo: rgba(255, 196, 0, 0.35);
  --canvas-distance-bg: #2a3447;
  --canvas-distance-leader: rgba(140, 155, 181, 0.8);
  --canvas-anchor-text: #aab2c4;

  /* 3D scene */
  --scene-bg: #0f1724;
  --scene-clear: #0b1220;

  /* Typography */
  --font-display: Inter, system-ui, sans-serif;
  --font-body: Inter, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --h1-weight: 600;
  --h1-tracking: -0.005em;
  --eyebrow-tracking: 0.22em;
  --eyebrow-weight: 500;

  /* Geometry */
  --radius-card: 14px;
  --radius-panel: 12px;
  --radius-button: 8px;
  --radius-pill: 999px;

  /* Brand mark */
  --brand-mark-color: #29a0ff;
  --brand-name-color: var(--text);
  --brand-period-color: var(--accent);
  --brand-mark-bg: transparent;

  /* Decorative */
  --backdrop-blur: blur(10px) saturate(140%);
  --header-tint-strength: 0.08;
}

/* =====================================================================
   Dimark presentation theme (data-theme="dimark" on <body>)
   Light, brand-aligned palette inspired by dimark.eu
   --------------------------------------------------------------------- */
body[data-theme="dimark"] {
  color-scheme: light;

  --bg: #faf6ef;
  --surface: #ffffff;
  --surface-2: #f5eee2;
  --surface-3: #ece1cd;
  --surface-elev: rgba(255, 255, 255, 0.96);
  --border: #ebe0cb;
  --border-soft: rgba(216, 197, 168, 0.5);
  --border-strong: #d2c0a0;
  --shadow-elev: 0 24px 60px -10px rgba(46, 33, 17, 0.22);
  --shadow-soft: 0 10px 26px -8px rgba(46, 33, 17, 0.16);
  --shadow-fab: 0 12px 28px -8px rgba(240, 99, 52, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.6);

  --text: #161c2c;
  --text-subtle: #2c374f;
  --text-muted: #6c7588;
  --text-dim: #a89e8b;

  --accent: #f06334;
  --accent-soft: #fab59c;
  --accent-warm: #f06334;
  --accent-tint: rgba(240, 99, 52, 0.08);
  --accent-glow: rgba(240, 99, 52, 0.35);
  --danger: #c83e1f;
  --danger-hover: #e15030;
  --danger-tint: rgba(200, 62, 31, 0.1);

  --input-bg: #faf6ef;
  --input-border: #d8c9af;
  --input-focus: #f06334;

  --canvas-bg: #f3ecdd;
  --canvas-grid: #e0d3b6;
  --canvas-line: #161c2c;
  --canvas-line-preview: #f06334;
  --canvas-line-fill-1: #161c2c;
  --canvas-line-fill-2: #3a4767;
  --canvas-label-bg: #161c2c;
  --canvas-label-text-light: #faf6ef;
  --canvas-label-text-dark: #faf6ef;
  --canvas-arc-mark: #f06334;
  --canvas-arc-mark-stroke: #161c2c;
  --canvas-variant-len: #161c2c;
  --canvas-variant-cov: #c4631f;
  --canvas-variant-byLen-fill: #161c2c;
  --canvas-variant-byCov-fill: #f06334;
  --canvas-dashed-strong: rgba(22, 28, 44, 0.7);
  --canvas-dashed-soft: rgba(22, 28, 44, 0.4);
  --canvas-dashed-faint: rgba(22, 28, 44, 0.22);
  --canvas-cursor-dash: #a89e8b;
  --canvas-selection-halo: rgba(240, 99, 52, 0.25);
  --canvas-distance-bg: #161c2c;
  --canvas-distance-leader: rgba(108, 117, 136, 0.55);
  --canvas-anchor-text: #6c7588;

  --scene-bg: #eee5d0;
  --scene-clear: #e6dcc3;

  --font-display: 'DM Sans', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'JetBrains Mono', ui-monospace, monospace;
  --h1-weight: 800;
  --h1-tracking: -0.025em;
  --eyebrow-tracking: 0.32em;
  --eyebrow-weight: 500;

  --brand-mark-color: #f06334;
  --brand-name-color: #161c2c;
  --brand-period-color: #f06334;
  --brand-mark-bg: transparent;

  --backdrop-blur: blur(14px) saturate(120%);
  --header-tint-strength: 0;
}

/* =====================================================================
   Base
   --------------------------------------------------------------------- */
html {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  transition: background-color 0.4s ease, color 0.4s ease;
}

.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 12px;
  gap: 10px;
}

/* =====================================================================
   Header & brand
   --------------------------------------------------------------------- */
header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-mark-color);
  background: var(--brand-mark-bg);
  width: 30px;
  height: 30px;
  border-radius: 6px;
  transition: color 0.4s ease, transform 0.4s ease;
}

body[data-theme="dimark"] .brand-mark {
  transform: rotate(0deg);
}

.brand-wordmark {
  margin: 0;
  font-size: 1.4rem;
  font-weight: var(--h1-weight);
  letter-spacing: var(--h1-tracking);
  font-family: var(--font-display);
  color: var(--brand-name-color);
  transition: color 0.4s ease, font-family 0.4s ease;
  position: relative;
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
}

.brand-name-default { display: inline; }
.brand-name-dimark { display: none; }

body[data-theme="dimark"] .brand-name-default { display: none; }
body[data-theme="dimark"] .brand-name-dimark { display: inline; }

.brand-period {
  color: var(--brand-period-color);
}

h1 {
  margin: 0;
  font-size: 1.4rem;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.settings-btn {
  background: var(--surface-3);
  color: var(--text-subtle);
}

.settings-btn:hover {
  background: color-mix(in srgb, var(--surface-3) 75%, var(--accent));
}

body[data-theme="dimark"] .settings-btn {
  background: transparent;
  color: var(--text-subtle);
  border: 1px solid var(--border);
}

body[data-theme="dimark"] .settings-btn:hover {
  background: var(--accent-tint);
  border-color: var(--accent);
  color: var(--accent);
}

/* Theme toggle (presentation switch) */
.theme-toggle {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px 7px 11px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, transform 0.15s ease;
}

.theme-toggle:hover {
  transform: none;
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-tint);
}

.theme-toggle[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

body[data-theme="dimark"] .theme-toggle[aria-pressed="true"] {
  background: #f06334;
  color: #ffffff;
  border-color: #f06334;
  box-shadow: 0 6px 16px -4px rgba(240, 99, 52, 0.45);
}

.theme-toggle-mark {
  flex-shrink: 0;
}

/* =====================================================================
   Layout
   --------------------------------------------------------------------- */
.layout {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  flex: 1;
  min-height: 0;
}

.viewer-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 12px;
  min-width: 0;
  min-height: 0;
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

.viewer-card h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--text);
}

/* =====================================================================
   Buttons
   --------------------------------------------------------------------- */
button {
  border: none;
  border-radius: var(--radius-button);
  padding: 8px 14px;
  cursor: pointer;
  color: #fff;
  background: #3d79ff;
  transition: transform 0.15s ease, background 0.15s ease, color 0.2s ease, border-color 0.2s ease;
  font-size: 0.88rem;
  font-family: var(--font-body);
}

button:hover {
  transform: translateY(-1px);
}

button.primary {
  background: var(--accent);
}

button.primary:hover {
  background: color-mix(in srgb, var(--accent) 88%, white);
}

button.danger {
  background: var(--danger);
}

button.danger:hover {
  background: var(--danger-hover);
}

body[data-theme="dimark"] button {
  background: var(--surface-3);
  color: var(--text);
}

body[data-theme="dimark"] button.primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 6px 16px -6px rgba(240, 99, 52, 0.45);
}

body[data-theme="dimark"] button.primary:hover {
  background: color-mix(in srgb, var(--accent) 92%, black);
}

body[data-theme="dimark"] button.danger {
  background: var(--danger);
  color: #ffffff;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  width: 34px;
  height: 34px;
}

/* =====================================================================
   Toolbar inside viewer cards
   --------------------------------------------------------------------- */
.viewer-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.viewer-toolbar .hint {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-left: auto;
}

.elev-control,
.cutplane-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-subtle);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-button);
  padding: 4px 8px;
}

.cutplane-control[hidden] { display: none; }

.cutplane-control input[type="number"],
.elev-control input {
  width: 60px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 4px 6px;
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
}

.elev-control input {
  width: 64px;
}

.cutplane-control input[type="number"]:focus,
.elev-control input:focus {
  outline: none;
  border-color: var(--input-focus);
}

.cutplane-control .slice-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-subtle);
  cursor: pointer;
}

.cutplane-control .slice-toggle input[type="checkbox"] {
  accent-color: var(--accent);
}

.cutplane-control .model-range {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.ground-count {
  color: var(--accent-warm);
  font-size: 0.82rem;
}

#pickGroundBtn.active {
  background: var(--accent-warm);
  color: var(--surface);
}

#pickFloorBtn {
  font-size: 0.78rem;
  padding: 4px 10px;
  background: var(--surface-3);
  color: var(--text);
  border-radius: 6px;
}

#pickFloorBtn:hover {
  background: color-mix(in srgb, var(--accent) 18%, var(--surface-3));
  color: var(--text);
}

#pickFloorBtn.active {
  background: var(--accent);
  color: #ffffff;
}

#pickFloorBtn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.elev-control[hidden] { display: none; }

.elev-control .elev-current {
  color: var(--text-muted);
}

.elev-control .elev-current strong {
  color: var(--text);
}

/* =====================================================================
   Canvas wrappers
   --------------------------------------------------------------------- */
.canvas-wrap,
#threeContainer {
  flex: 1;
  width: 100%;
  min-height: 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--canvas-bg);
  transition: background-color 0.4s ease;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.info {
  margin-top: 8px;
  color: var(--canvas-anchor-text);
  min-height: 1.2em;
  font-size: 0.82rem;
  flex-shrink: 0;
}

/* =====================================================================
   Palette overlay (legacy results panel)
   --------------------------------------------------------------------- */
.palette-overlay {
  position: absolute;
  top: 44px;
  right: 14px;
  z-index: 20;
  width: 320px;
  max-width: calc(50% - 24px);
  background: var(--surface-elev);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-elev);
}

.palette-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  background: transparent;
  color: var(--text);
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-display);
  border-radius: var(--radius-panel);
}

.palette-toggle:hover {
  transform: none;
  background: color-mix(in srgb, var(--text) 4%, transparent);
}

.palette-toggle .chev {
  transition: transform 0.2s ease;
}

.palette-overlay.collapsed .palette-toggle .chev {
  transform: rotate(-90deg);
}

.palette-body {
  padding: 0 14px 14px;
  max-height: 55vh;
  overflow-y: auto;
}

.palette-overlay.collapsed .palette-body { display: none; }

.summary {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  min-height: 56px;
  background: var(--surface-2);
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--text);
}

#segmentList {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--text);
}

#segmentList li {
  margin-bottom: 4px;
  font-size: 0.9rem;
}

/* =====================================================================
   Modal (settings)
   --------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

body[data-theme="dimark"] .modal-backdrop {
  background: rgba(22, 28, 44, 0.32);
}

.modal-backdrop[hidden] { display: none; }

.modal {
  width: 100%;
  max-width: 460px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-elev);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 48px);
  overflow: hidden;
  color: var(--text);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.05rem;
  font-family: var(--font-display);
}

.modal-close {
  background: transparent;
  color: var(--text-subtle);
}

.modal-close:hover {
  background: color-mix(in srgb, var(--text) 6%, transparent);
}

.modal-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}

.modal-body label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-subtle);
}

.modal-body input {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-button);
  padding: 8px 10px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}

.modal-body input:focus {
  outline: none;
  border-color: var(--input-focus);
}

.modal-body small {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 6px;
}

.arc-library {
  border: 1px solid var(--border);
  border-radius: var(--radius-button);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.arc-library legend {
  padding: 0 6px;
  font-size: 0.85rem;
  color: var(--text-subtle);
}

.arc-library table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.arc-library th {
  text-align: left;
  font-weight: 500;
  color: var(--text-muted);
  padding: 4px 6px;
}

.arc-library td { padding: 3px 6px; }

.arc-library input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 5px 8px;
  color: var(--text);
  font-size: 0.88rem;
  font-family: inherit;
}

.arc-library input:focus {
  outline: none;
  border-color: var(--input-focus);
}

.arc-library .row-remove {
  background: transparent;
  color: var(--danger);
  padding: 2px 8px;
  font-size: 1rem;
  line-height: 1;
  border-radius: 6px;
}

.arc-library .row-remove:hover {
  background: var(--danger-tint);
  transform: none;
}

.arc-library #arcLibraryAddBtn {
  align-self: flex-start;
  background: var(--surface-3);
  font-size: 0.82rem;
  padding: 6px 12px;
}

body[data-theme="dimark"] .arc-library #arcLibraryAddBtn {
  color: var(--text);
}

/* =====================================================================
   Context menu
   --------------------------------------------------------------------- */
.context-menu {
  position: fixed;
  z-index: 80;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-button);
  padding: 4px;
  box-shadow: var(--shadow-elev);
  display: flex;
  flex-direction: column;
  min-width: 170px;
}

.context-menu[hidden] { display: none; }

.context-menu button {
  background: transparent;
  color: var(--text);
  text-align: left;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 0.88rem;
}

.context-menu button:hover:not(:disabled) {
  background: color-mix(in srgb, var(--text) 8%, transparent);
  transform: none;
}

.context-menu button:disabled {
  color: var(--text-muted);
  cursor: not-allowed;
}

/* =====================================================================
   Stats dock — "Bill of Materials" floating counter
   --------------------------------------------------------------------- */
.stats-dock {
  position: absolute;
  bottom: 14px;
  right: 14px;
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  pointer-events: none;
}

.stats-dock > * { pointer-events: auto; }

.stats-fab {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg,
    color-mix(in srgb, var(--surface) 90%, white) 0%,
    var(--surface-2) 100%);
  color: var(--text-subtle);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-fab);
  transition: transform 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.stats-fab:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  color: var(--text);
}

.stats-fab[aria-expanded="true"] {
  border-color: var(--accent);
  color: var(--text);
  box-shadow:
    0 0 0 1px var(--accent-glow),
    var(--shadow-fab);
}

.stats-fab-icon {
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.25));
}

.stats-fab-badge {
  position: absolute;
  top: -6px;
  right: -8px;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  background: var(--accent);
  color: #ffffff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  line-height: 1;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.4),
    0 0 0 2px var(--surface);
}

body[data-theme="dimark"] .stats-fab-badge {
  color: #ffffff;
  box-shadow:
    0 2px 6px rgba(240, 99, 52, 0.35),
    0 0 0 2px var(--bg);
}

.stats-fab-badge[data-empty="true"] {
  background: var(--surface-3);
  color: var(--text-muted);
  box-shadow: 0 0 0 2px var(--surface);
}

.stats-panel {
  width: 320px;
  max-width: calc(100vw - 32px);
  max-height: min(60vh, 520px);
  background: var(--surface-elev);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-elev);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform-origin: bottom right;
  animation: statsPanelIn 0.22s cubic-bezier(0.2, 0.8, 0.25, 1);
  color: var(--text);
}

.stats-panel[hidden] { display: none; }

@keyframes statsPanelIn {
  from { opacity: 0; transform: translateY(10px) scale(0.97); }
  to   { opacity: 1; transform: none; }
}

.stats-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--border-soft);
  background: radial-gradient(120% 80% at 100% 0%,
    color-mix(in srgb, var(--accent) calc(var(--header-tint-strength) * 100%), transparent),
    transparent 60%);
}

.stats-panel-titles {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stats-panel-eyebrow {
  font-family: var(--font-mono);
  font-weight: var(--eyebrow-weight);
  font-size: 0.66rem;
  letter-spacing: var(--eyebrow-tracking);
  text-transform: uppercase;
  color: var(--accent-soft);
}

body[data-theme="dimark"] .stats-panel-eyebrow {
  color: var(--accent-soft);
}

.stats-panel-header h3 {
  margin: 0;
  font-size: 0.98rem;
  font-weight: var(--h1-weight);
  font-family: var(--font-display);
  color: var(--text);
  letter-spacing: -0.005em;
}

.stats-panel-close {
  background: transparent;
  color: var(--text-subtle);
  width: 28px;
  height: 28px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}

.stats-panel-close:hover {
  transform: none;
  background: color-mix(in srgb, var(--text) 6%, transparent);
  color: var(--text);
}

.stats-panel-body {
  padding: 4px 4px 8px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.stats-panel-body::-webkit-scrollbar { width: 6px; }
.stats-panel-body::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}

.stats-empty {
  padding: 30px 18px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.stats-empty::before {
  content: '∅';
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--border-strong);
  margin-bottom: 8px;
}

.stats-section {
  padding: 12px 14px 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stats-section + .stats-section {
  border-top: 1px dashed var(--border-soft);
}

.stats-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 6px;
  padding: 0 2px;
}

.stats-section-name {
  font-family: var(--font-mono);
  font-weight: var(--eyebrow-weight);
  font-size: 0.66rem;
  letter-spacing: var(--eyebrow-tracking);
  text-transform: uppercase;
  color: var(--text-muted);
}

.stats-section-count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--accent-soft);
  letter-spacing: 0.04em;
}

body[data-theme="dimark"] .stats-section-count {
  color: var(--accent);
}

.stats-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.stats-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 4px;
  border-radius: 6px;
  transition: background 0.15s ease;
  animation: statsRowIn 0.32s cubic-bezier(0.2, 0.8, 0.25, 1) backwards;
}

@keyframes statsRowIn {
  from { opacity: 0; transform: translateX(6px); }
  to   { opacity: 1; transform: none; }
}

.stats-row:hover {
  background: var(--accent-tint);
}

.stats-row-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 18px;
  color: var(--accent-soft);
}

body[data-theme="dimark"] .stats-row-icon {
  color: var(--text-subtle);
}

.stats-row-icon.arc {
  color: var(--accent-warm);
}

body[data-theme="dimark"] .stats-row-icon.arc {
  color: var(--accent);
}

.stats-row-label {
  font-size: 0.86rem;
  color: var(--text-subtle);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.stats-row-leader {
  flex: 1 1 auto;
  height: 0;
  border-bottom: 1px dotted var(--border-strong);
  transform: translateY(-3px);
  min-width: 16px;
}

.stats-row-count {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  min-width: 28px;
  text-align: right;
}

.stats-row-count::after {
  content: '×';
  margin-left: 3px;
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.82rem;
}

.stats-panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-top: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--surface-2) 60%, transparent);
}

.stats-panel-footer[hidden] { display: none; }

.stats-footer-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.stats-footer-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* =====================================================================
   Responsive
   --------------------------------------------------------------------- */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    grid-auto-rows: 1fr;
  }
  body { overflow: auto; }
  .app-shell {
    height: auto;
    min-height: 100vh;
  }
}
