/* ============================================================
   Cross-Spectral Face Matching — POC/BLPOC Living Paper
   Stylesheet
   ============================================================ */

:root {
  --bg: #0a0e17;
  --surface: #131a2b;
  --surface2: #1a2340;
  --border: #2a3555;
  --accent: #3b82f6;
  --accent2: #8b5cf6;
  --accent3: #06b6d4;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --success: #10b981;
  --danger: #ef4444;
  --glow: rgba(59, 130, 246, 0.15);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(59,130,246,0.06), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(139,92,246,0.05), transparent);
  pointer-events: none;
  z-index: 0;
}

.app { position: relative; z-index: 1; max-width: 1400px; margin: 0 auto; padding: 24px; }

/* ── Header ────────────────────────────────────────────── */
header {
  text-align: center;
  margin-bottom: 32px;
  padding: 32px;
  background: linear-gradient(135deg, var(--surface), var(--surface2));
  border: 1px solid var(--border);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
}

header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

header p { color: var(--text2); font-size: 0.9rem; line-height: 1.6; max-width: 700px; margin: 0 auto; }

header .badge {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 12px;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--accent);
}

/* ── Controls ──────────────────────────────────────────── */
.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.control-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s;
}

.control-card:hover { border-color: var(--accent); }

.control-card label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text2);
  margin-bottom: 8px;
}

.control-card .value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  background: var(--surface2);
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(59,130,246,0.4);
}

.btn-row { display: flex; gap: 8px; margin-top: 12px; }

button {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: white;
  flex: 1;
}

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { border-color: var(--accent); }

/* ── Canvas Grid ───────────────────────────────────────── */
.canvas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

@media (max-width: 900px) {
  .canvas-grid { grid-template-columns: 1fr; }
}

.canvas-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.canvas-card:hover { border-color: var(--accent); }

.canvas-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.canvas-header h3 { font-size: 0.85rem; font-weight: 600; }

.canvas-header .tag {
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag-visual { background: rgba(16,185,129,0.15); color: var(--success); }
.tag-thermal { background: rgba(239,68,68,0.15); color: var(--danger); }
.tag-result { background: rgba(139,92,246,0.15); color: var(--accent2); }

.canvas-wrap {
  padding: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
  background: rgba(0,0,0,0.2);
}

.canvas-wrap canvas {
  max-width: 100%;
  max-height: 300px;
  border-radius: 4px;
  image-rendering: pixelated;
}

/* ── Status Bar ────────────────────────────────────────── */
.status-bar {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.status-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 20px;
  flex: 1;
  min-width: 160px;
}

.status-item .label { font-size: 0.7rem; color: var(--text2); text-transform: uppercase; letter-spacing: 0.05em; }
.status-item .val { font-size: 1.1rem; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.val-match { color: var(--success); }
.val-score { color: var(--accent); }
.val-time { color: var(--accent3); }

/* ── Heatmap Legend ────────────────────────────────────── */
.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 0.7rem;
  color: var(--text2);
  border-top: 1px solid var(--border);
}

.heatmap-bar {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, #000033, #0000ff, #00ffff, #00ff00, #ffff00, #ff0000, #ffffff);
}

/* ── Batch Section ─────────────────────────────────────── */
.batch-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
  display: none;
}

.batch-section.visible { display: block; }

.batch-section h3 {
  font-size: 0.9rem;
  margin-bottom: 12px;
  color: var(--accent);
}

.batch-progress {
  width: 100%;
  height: 8px;
  background: var(--surface2);
  border-radius: 4px;
  overflow: hidden;
  margin: 12px 0;
}

.batch-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 4px;
  transition: width 0.3s;
  width: 0%;
}

.batch-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
  margin-top: 12px;
}

.batch-table th, .batch-table td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.batch-table th { color: var(--text2); text-transform: uppercase; font-size: 0.65rem; }
.batch-table td { font-variant-numeric: tabular-nums; }

/* ── Log Panel ─────────────────────────────────────────── */
.log-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.log-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
}

#log {
  padding: 12px 16px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.72rem;
  line-height: 1.8;
  max-height: 200px;
  overflow-y: auto;
  color: var(--text2);
}

#log .info  { color: var(--accent); }
#log .warn  { color: #f59e0b; }
#log .error { color: var(--danger); }
#log .ok    { color: var(--success); }

/* ── Loading Overlay ───────────────────────────────────── */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,14,23,0.95);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  transition: opacity 0.5s;
}

.loading-overlay.hidden { opacity: 0; pointer-events: none; }

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--surface2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-text { color: var(--text2); font-size: 0.9rem; }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 600px) {
  .app { padding: 12px; }
  header { padding: 20px; }
  header h1 { font-size: 1.3rem; }
  .controls { grid-template-columns: 1fr; }
}

/* ── Copyright Footer ──────────────────────────────────── */
.footer {
  text-align: center;
  padding: 24px 16px 16px;
  margin-top: 32px;
}

.footer-inner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 40px;
  backdrop-filter: blur(8px);
}

.footer-icon {
  font-size: 1rem;
  animation: footer-bob 3s ease-in-out infinite;
}

.footer-text {
  font-size: 0.75rem;
  color: var(--text2);
  letter-spacing: 0.03em;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: shimmer 4s linear infinite;
}

@keyframes footer-bob {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50%      { transform: translateY(-2px) rotate(5deg); }
}

@keyframes shimmer {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ── Floating Trakteer Button ──────────────────────────── */
.kopi-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: #be1e2d;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  text-decoration: none;
  cursor: pointer;
  animation: kopi-float 3.5s ease-in-out infinite;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 2px 10px rgba(190, 30, 45, 0.3);
}

.kopi-float:hover {
  transform: scale(1.12);
  animation: none;
}

.kopi-float:hover .kopi-ring {
  animation: none;
  opacity: 0;
}

.kopi-float img {
  width: 20px;
  height: 20px;
  object-fit: contain;
  display: block;
  pointer-events: none;
  animation: kopi-wobble 4s ease-in-out infinite;
  transform-origin: center bottom;
}

.kopi-float:hover img {
  animation: none;
  transform: rotate(0deg);
}

.kopi-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(190, 30, 45, 0.4);
  animation: kopi-ripple 2.4s ease-out infinite;
  transition: opacity 0.3s ease;
}

.kopi-r2 { animation-delay: 1.2s; }

@keyframes kopi-ripple {
  0%   { transform: scale(1);   opacity: 0.7; }
  100% { transform: scale(2.0); opacity: 0; }
}

@keyframes kopi-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}

@keyframes kopi-wobble {
  0%, 55%  { transform: rotate(0deg); }
  58%      { transform: rotate(-18deg); }
  61%      { transform: rotate(16deg); }
  64%      { transform: rotate(-12deg); }
  67%      { transform: rotate(10deg); }
  70%      { transform: rotate(-6deg); }
  73%      { transform: rotate(4deg); }
  76%, 100%{ transform: rotate(0deg); }
}

@media (max-width: 720px) {
  .kopi-float {
    bottom: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
  }
  .kopi-float img { width: 18px; height: 18px; }
}