*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0e1a;
  --surface: #0f1424;
  --surface2: #141a30;
  --border: #1e2740;
  --text: #e2e8f0;
  --text-dim: #7a8baa;
  --text-muted: #556680;
  --accent-gold: #f0c040;
  --accent-cyan: #38bdf8;
  --glow-gold: 0 0 40px rgba(240,192,64,0.15);
  --glow-cyan: 0 0 40px rgba(56,189,248,0.15);
}

[data-theme="light"] {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface2: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-dim: #475569;
  --text-muted: #64748b;
  --accent-gold: #d97706;
  --accent-cyan: #0284c7;
  --glow-gold: 0 0 40px rgba(217,119,6,0.1);
  --glow-cyan: 0 0 40px rgba(2,132,199,0.1);
}

html, body { height: 100%; overflow: hidden; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  display: flex;
  flex-direction: column;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 65%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 55% 15%, rgba(255,255,255,0.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 45%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 80%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 15% 85%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 45% 50%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 10%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 25% 35%, rgba(240,192,64,0.3) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 75% 60%, rgba(56,189,248,0.2) 0%, transparent 100%);
  animation: twinkle 8s ease-in-out infinite alternate;
}

[data-theme="light"] body::before { display: none; }

@keyframes twinkle {
  0% { opacity: 1; }
  100% { opacity: 0.5; }
}

/* ── Layout ── */
.sidebar, .status-bar, #chartdiv, .theme-toggle { position: relative; z-index: 1; }

body { padding-top: 36px; }

.theme-toggle {
  position: fixed;
  bottom: 32px;
  right: 9px;
  z-index: 1000;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
}
.theme-toggle:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
}
[data-theme="dark"] .theme-toggle__sun { display: block; }
[data-theme="dark"] .theme-toggle__moon { display: none; }
[data-theme="light"] .theme-toggle__sun { display: none; }
[data-theme="light"] .theme-toggle__moon { display: block; }

/* ── Main layout ── */
.main {
  display: flex;
  flex: 1;
  min-height: 0;
}

/* ── Sidebar ── */
.sidebar {
  width: 260px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar::-webkit-scrollbar { width: 5px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.section {
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
}

.section-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 8px;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-title::before {
  content: '\25BC';
  font-size: 7px;
  transition: transform 0.2s;
}

.section.collapsed .section-title::before {
  transform: rotate(-90deg);
}

.section.collapsed .section-body { display: none; }

.row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.row:last-child { margin-bottom: 0; }

label.row-label {
  font-size: 11px;
  color: var(--text-dim);
  min-width: 52px;
  flex-shrink: 0;
}

select, input[type="text"] {
  flex: 1;
  min-width: 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  outline: none;
  cursor: pointer;
}

select:focus, input[type="text"]:focus { border-color: var(--accent-cyan); }

select option { background: var(--bg); color: var(--text); }

input[type="color"] {
  width: 28px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  cursor: pointer;
  padding: 1px;
}

input[type="color"]::-webkit-color-swatch-wrapper { padding: 1px; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 2px; }

input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid var(--accent-cyan);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid var(--accent-cyan);
  cursor: pointer;
}

.range-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-dim);
  min-width: 30px;
  text-align: right;
}

/* ── Buttons ── */
.btn {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 500;
  background: var(--bg);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text);
  border-color: var(--accent-cyan);
}

.btn.active {
  background: var(--accent-cyan);
  color: #fff;
  border-color: var(--accent-cyan);
}

.btn-export {
  width: 100%;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  padding: 8px;
  background: var(--accent-cyan);
  color: #fff;
  border: 1px solid var(--accent-cyan);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.5px;
}

.btn-export:hover {
  box-shadow: var(--glow-cyan);
  filter: brightness(1.15);
}

/* ── Checkbox ── */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}

.row input[type="checkbox"], .checkbox-row input[type="checkbox"] {
  accent-color: var(--accent-cyan);
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-row label {
  font-size: 11px;
  color: var(--text-dim);
  cursor: pointer;
}

.small-btn {
  padding: 3px 8px;
  font-size: 10px;
  font-family: 'Space Grotesk', sans-serif;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  cursor: pointer;
  flex-shrink: 0;
}
.small-btn:hover { background: var(--border); color: var(--text); }
.small-btn.active { background: var(--accent-cyan); border-color: var(--accent-cyan); color: #fff; }

.row-divider {
  width: 1px;
  height: 16px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── Polygon list ── */
#polygonList {
  max-height: 200px;
  overflow-y: auto;
}

#polygonList::-webkit-scrollbar { width: 4px; }
#polygonList::-webkit-scrollbar-track { background: transparent; }
#polygonList::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.polygon-item {
  font-size: 11px;
  color: var(--text-dim);
  padding: 2px 4px;
  cursor: pointer;
  border-radius: 3px;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.polygon-item:hover { background: rgba(255,255,255,0.04); color: var(--text); }

.polygon-item.hidden {
  color: var(--text-muted);
  text-decoration: line-through;
  opacity: 0.5;
}

.polygon-item .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.polygon-item.hidden .dot { opacity: 0.3; }

.polygon-filter {
  width: 100%;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  outline: none;
  margin-bottom: 6px;
}

.polygon-filter:focus { border-color: var(--accent-cyan); }
.polygon-filter::placeholder { color: var(--text-muted); }

/* ── Fill tool indicator ── */
.fill-tool-active {
  font-size: 10px;
  color: var(--accent-cyan);
  font-weight: 500;
  display: none;
}

.fill-tool-active.visible { display: inline; }

/* ── Painted list ── */
.painted-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: var(--text-dim);
  padding: 1px 0;
}

.painted-item .swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.painted-item .remove {
  margin-left: auto;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 12px;
}

.painted-item .remove:hover { color: #ef4444; }

/* ── Chart area ── */
#chartdiv {
  flex: 1;
  min-width: 0;
  background: #f0f0f0;
}

/* ── Status bar ── */
.status-bar {
  display: flex;
  align-items: center;
  padding: 0 14px;
  height: 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  gap: 16px;
}

.status-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-muted);
}

.status-item span { color: var(--text-dim); }

/* ── Loading overlay ── */
.loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 12px;
  color: var(--text-dim);
  background: var(--surface);
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  z-index: 100;
  display: none;
  pointer-events: none;
}

.loading.visible { display: block; }