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

:root {
  --bg-primary: #09090b;
  --bg-secondary: #0f0f12;
  --bg-tertiary: #16161a;
  --bg-card: #111114;
  --border-color: #1f1f23;
  --border-subtle: #18181c;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;
  --accent-green: #10b981;
  --accent-purple: #a78bfa;
  --accent-blue: #60a5fa;
  --accent-orange: #fb923c;
  
  --level-0: #18181c;
  --level-1: #064e3b;
  --level-2: #047857;
  --level-3: #059669;
  --level-4: #10b981;
}

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

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.logo-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-green);
}

.logo h1 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.65rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
}

.connection-status.connected .status-dot {
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 0.75rem;
  text-align: center;
}

.stat-card.today {
  border-color: rgba(16, 185, 129, 0.4);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.06) 0%, transparent 60%);
}

.stat-label {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.375rem;
}

.stat-value {
  font-family: 'DM Mono', monospace;
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-sublabel {
  font-size: 0.55rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Heatmap Section - Full Width, Compact */
.heatmap-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.heatmap-section h2 {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.heatmap-wrapper {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.heatmap-labels {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.heatmap-label {
  text-align: center;
  font-size: 0.6rem;
  font-weight: 500;
  color: var(--text-muted);
  padding-bottom: 2px;
}

.heatmap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.heatmap-week {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.heatmap-day {
  height: 52px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.15s ease;
  border: 2px solid transparent;
}

.heatmap-day:hover {
  transform: scale(1.03);
  z-index: 2;
}

.heatmap-day.level-0 { 
  background: var(--level-0); 
  color: rgba(255, 255, 255, 0.3);
}

.heatmap-day.level-1 { 
  background: var(--level-1); 
  color: rgba(255, 255, 255, 0.7);
}

.heatmap-day.level-2 { 
  background: var(--level-2); 
  color: rgba(255, 255, 255, 0.85);
}

.heatmap-day.level-3 { 
  background: var(--level-3); 
  color: #fff;
}

.heatmap-day.level-4 { 
  background: var(--level-4); 
  color: #fff;
  font-weight: 600;
}

.heatmap-day.today {
  border-color: var(--text-primary);
  font-weight: 700;
}

.heatmap-day.future {
  background: transparent;
  color: rgba(255, 255, 255, 0.1);
  cursor: default;
  border: 1px dashed var(--border-subtle);
}

.heatmap-day.future:hover {
  transform: none;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 0.75rem;
  font-size: 0.6rem;
  font-weight: 500;
  color: var(--text-muted);
}

.legend-cells {
  display: flex;
  gap: 3px;
}

.legend-cells .legend-cell {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.legend-cells .legend-cell.level-0 { background: var(--level-0); }
.legend-cells .legend-cell.level-1 { background: var(--level-1); }
.legend-cells .legend-cell.level-2 { background: var(--level-2); }
.legend-cells .legend-cell.level-3 { background: var(--level-3); }
.legend-cells .legend-cell.level-4 { background: var(--level-4); }

/* Tooltip */
.tooltip {
  position: fixed;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.75rem 0.875rem;
  font-size: 0.75rem;
  pointer-events: none;
  opacity: 0;
  transform: translateX(-50%);
  transition: opacity 0.15s ease;
  z-index: 1000;
  min-width: 160px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.tooltip.visible {
  opacity: 1;
}

.tooltip-date {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.tooltip-tokens {
  font-family: 'DM Mono', monospace;
  color: var(--accent-green);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.tooltip-models {
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-top: 1px solid var(--border-color);
  padding-top: 6px;
}

.tooltip-model {
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
  font-size: 0.7rem;
}

.tooltip-model span:last-child {
  font-family: 'DM Mono', monospace;
}

/* Main Grid */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.875rem;
}

.leaderboard-section, .models-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.25rem;
}

.leaderboard-section h2, .models-section h2 {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.leaderboard {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.leaderboard-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: 8px;
}

.leaderboard-rank {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  width: 22px;
}

.leaderboard-rank.gold { color: #fbbf24; }
.leaderboard-rank.silver { color: #d1d5db; }
.leaderboard-rank.bronze { color: #f59e0b; }

.leaderboard-info {
  flex: 1;
}

.leaderboard-date {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
}

.leaderboard-details {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 1px;
}

.leaderboard-tokens {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-green);
}

/* Model Bars */
.model-bars {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.model-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.model-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.model-name {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
}

.model-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.model-dot.opus { background: var(--accent-purple); }
.model-dot.sonnet { background: var(--accent-blue); }
.model-dot.haiku { background: var(--accent-orange); }

.model-stats {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.model-bar-track {
  height: 5px;
  background: var(--bg-primary);
  border-radius: 2.5px;
  overflow: hidden;
}

.model-bar-fill {
  height: 100%;
  border-radius: 2.5px;
  transition: width 0.5s ease;
}

.model-bar-fill.opus { background: var(--accent-purple); }
.model-bar-fill.sonnet { background: var(--accent-blue); }
.model-bar-fill.haiku { background: var(--accent-orange); }

footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.65rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 1.25rem 1rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .main-grid {
    grid-template-columns: 1fr;
  }
  
  .heatmap-day {
    height: 44px;
    font-size: 0.7rem;
  }
}

@media (max-width: 480px) {
  .heatmap-day {
    height: 36px;
    font-size: 0.6rem;
    border-radius: 6px;
  }
}