/* ═══════════════════════════════════════════════════════════════
   CoinGlass Clone — Liquid Void Design System
   Minimalist, spacious, premium dark mode
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Deep void background */
  --bg-void: #050508;
  --bg-deep: #0a0a0f;
  --bg-surface: #0f0f16;
  --bg-elevated: #14141f;
  --bg-hover: #1a1a28;

  /* Glassmorphism */
  --glass-bg: rgba(15, 15, 22, 0.65);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-border-hover: rgba(255, 255, 255, 0.12);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glass-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--glass-border-hover);

  /* Text */
  --text-primary: #e8e8ed;
  --text-secondary: #8a8a9a;
  --text-muted: #5a5a6a;
  --text-ghost: #3a3a4a;

  /* Accent — lavender-cyan */
  --accent: #7c8cfc;
  --accent-glow: rgba(124, 140, 252, 0.3);
  --accent-dim: rgba(124, 140, 252, 0.1);

  /* Semantic */
  --green: #2dd4a0;
  --green-dim: rgba(45, 212, 160, 0.1);
  --red: #f97066;
  --red-dim: rgba(249, 112, 102, 0.1);
  --yellow: #f5a623;

  /* Spacing scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

/* ── Reset & Base ─────────────────────────────────────────── */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-void);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle grain texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-ghost); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Animations ─────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50% { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(124,140,252,0.1); }
}

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

@keyframes countUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.animate-fade-in { animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-slide-up { animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.animate-scale { animation: fadeInScale 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

/* Stagger children */
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.1s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.2s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }
.stagger > *:nth-child(6) { animation-delay: 0.3s; }

/* ── Header ──────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  padding: 0 var(--space-xl);
  height: 64px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: all 0.3s ease;
}

.header-left { display: flex; align-items: center; gap: var(--space-md); }

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}
.logo:hover { text-decoration: none; opacity: 1; }

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

.header-nav {
  display: flex;
  gap: var(--space-xs);
  margin-left: var(--space-xl);
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 13px;
  transition: all 0.2s ease;
  position: relative;
}
.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.03);
  text-decoration: none;
}
.nav-link.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent-glow);
}

.header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--green-dim);
  border: 1px solid rgba(45, 212, 160, 0.2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--green);
  font-family: var(--font-mono);
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ── Ticker Bar ─────────────────────────────────────────── */
.ticker-bar {
  display: flex;
  gap: var(--space-xl);
  padding: var(--space-md) var(--space-xl);
  background: linear-gradient(90deg, var(--bg-deep), var(--bg-surface));
  border-bottom: 1px solid var(--glass-border);
  overflow-x: auto;
  white-space: nowrap;
}

.ticker-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.ticker-label {
  color: var(--text-muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.ticker-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
}

/* ── Pages ──────────────────────────────────────────────── */
.page {
  display: none;
  padding: var(--space-xl);
  max-width: 1600px;
  margin: 0 auto;
  animation: fadeIn 0.4s ease;
}
.page.active { display: block; }

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.page-header h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  background: linear-gradient(180deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: var(--space-xs);
}

/* ── Controls ───────────────────────────────────────────── */
.controls-group {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

.filter-btn, .coin-btn, .tf-btn {
  padding: 8px 18px;
  border: 1px solid var(--glass-border);
  background: var(--bg-surface);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  font-size: 13px;
  transition: all 0.2s ease;
  font-family: var(--font-sans);
}
.filter-btn:hover, .coin-btn:hover, .tf-btn:hover {
  border-color: var(--glass-border-hover);
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.filter-btn.active, .coin-btn.active, .tf-btn.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}

.input-sm {
  padding: 8px 14px;
  border: 1px solid var(--glass-border);
  background: var(--bg-surface);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  width: 120px;
  font-size: 13px;
  font-family: var(--font-mono);
  transition: all 0.2s;
}
.input-sm:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-sm {
  padding: 8px 20px;
  border: none;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
  font-family: var(--font-sans);
}
.btn-sm:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* ── Glass Cards ────────────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--glass-shadow);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.glass-card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow-hover);
  transform: translateY(-2px);
}

/* ── Stats Row ──────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.stat-card {
  composes: glass-card;
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.stat-card:hover::before { opacity: 1; }

.stat-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.2;
}

.stat-sub {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
  font-family: var(--font-mono);
}

/* ── OI Exchange Cards ──────────────────────────────────── */
.oi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.oi-card {
  composes: glass-card;
  padding: var(--space-lg);
  position: relative;
}

.oi-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.oi-card-name {
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.oi-card-badge {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.oi-card-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.oi-card-change {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.oi-card-spark {
  margin-top: var(--space-md);
  height: 40px;
  width: 100%;
}

/* ── Tables ─────────────────────────────────────────────── */
.table-container {
  composes: glass-card;
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
}

.table-container h2 {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  padding: 12px 16px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--glass-border);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color 0.2s;
}
.data-table th:hover { color: var(--text-secondary); }

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  white-space: nowrap;
  transition: background 0.15s;
}
.data-table tbody tr:hover td {
  background: rgba(255,255,255,0.02);
}
.data-table tbody tr:last-child td { border-bottom: none; }

/* ── Heatmap ────────────────────────────────────────────── */
.heatmap-wrapper {
  margin-bottom: var(--space-xl);
}

.heatmap-container {
  position: relative;
  background: var(--bg-deep);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
}

#heatmapCanvas {
  width: 100%;
  height: 520px;
  display: block;
  cursor: crosshair;
}

.heatmap-tooltip {
  display: none;
  position: absolute;
  padding: 12px 16px;
  background: rgba(5, 5, 8, 0.95);
  border: 1px solid var(--glass-border-hover);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 12px;
  pointer-events: none;
  z-index: 10;
  white-space: nowrap;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  font-family: var(--font-mono);
}
.heatmap-tooltip.active { display: block; }

/* ── Two Column Layout ──────────────────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

/* ── Colors ─────────────────────────────────────────────── */
.green { color: var(--green); }
.red { color: var(--red); }
.yellow { color: var(--yellow); }
.muted { color: var(--text-muted); }
.accent { color: var(--accent); }

.coin-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.coin-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bg-hover), var(--bg-elevated));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 800;
  color: var(--accent);
  border: 1px solid var(--glass-border);
}

.exchange-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

/* ── Loading ────────────────────────────────────────────── */
.loading {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(5,5,8,0.8);
  backdrop-filter: blur(10px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text-primary);
  font-size: 14px;
  flex-direction: column;
}
.loading.active { display: flex; }

.spinner {
  width: 32px; height: 32px;
  border: 2px solid var(--glass-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ── Toast ──────────────────────────────────────────────── */
.toast {
  display: none;
  position: fixed;
  bottom: 32px;
  right: 32px;
  padding: 14px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border-hover);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  z-index: 300;
  font-size: 13px;
  box-shadow: var(--glass-shadow-hover);
  animation: slideUp 0.3s ease;
}
.toast.active { display: block; }

/* ── Predictor ──────────────────────────────────────────── */
.pred-card-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.pred-card {
  composes: glass-card;
  padding: var(--space-lg);
  text-align: center;
}

.pred-card-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.pred-card-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
}

.pred-card-sub {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

.pred-direction {
  position: relative;
  overflow: hidden;
}
.pred-direction::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.05;
  pointer-events: none;
}
.pred-long::before { background: var(--green); }
.pred-short::before { background: var(--red); }
.pred-neutral::before { background: var(--yellow); }

.pred-stat-card {
  composes: glass-card;
  padding: var(--space-md);
  text-align: center;
}

.pred-stat-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-xs);
}

.pred-stat-value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
}

/* ── Threshold Slider ─────────────────────────────────── */
.threshold-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.threshold-wrap label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}
.threshold-wrap input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 140px;
  height: 4px;
  border-radius: 2px;
  background: var(--bg-elevated);
  outline: none;
  cursor: pointer;
}
.threshold-wrap input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-void);
  cursor: pointer;
  box-shadow: 0 0 12px var(--accent-glow);
  transition: transform 0.15s;
}
.threshold-wrap input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}
.threshold-val {
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-mono);
  min-width: 40px;
}

/* ── Empty States ───────────────────────────────────────── */
.empty {
  text-align: center;
  padding: 100px var(--space-xl);
  color: var(--text-muted);
}
.empty-icon {
  font-size: 64px;
  margin-bottom: var(--space-lg);
  opacity: 0.3;
}
.empty-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}
.empty-sub {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Responsive (basic) ───────────────────────────────── */
@media (max-width: 1024px) {
  .two-col { grid-template-columns: 1fr; }
  .header-nav { display: none; }
  .page { padding: var(--space-md); }
}