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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-hover: #222222;
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --text-muted: #666666;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: #2a2a2a;
  --shadow: rgba(0, 0, 0, 0.5);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'SF Pro Display', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

header {
  text-align: center;
  margin-bottom: 4rem;
  animation: fadeIn 0.6s ease-out;
}

.nav {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.nav a:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.nav a.active {
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 400;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
  animation: fadeIn 0.8s ease-out;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--shadow);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
  animation: fadeIn 1s ease-out;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.chart-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 24px var(--shadow);
}

.chart-card h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

canvas {
  max-height: 300px;
}

.model-details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  animation: fadeIn 1.2s ease-out;
}

.model-details h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.model-table {
  display: grid;
  gap: 1rem;
}

.model-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.2s ease;
  align-items: center;
}

.model-row:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
}

.model-name {
  font-weight: 600;
  color: var(--accent);
}

.model-stat {
  text-align: right;
}

.model-stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.model-stat-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

footer {
  margin-top: 3rem;
  text-align: center;
}

.refresh-btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.refresh-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.refresh-btn:active {
  transform: translateY(0);
}

.refresh-icon {
  font-size: 1.25rem;
  display: inline-block;
  transition: transform 0.5s ease;
}

.refresh-btn:hover .refresh-icon {
  transform: rotate(180deg);
}

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

@media (max-width: 768px) {
  .container {
    padding: 2rem 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  .charts-grid {
    grid-template-columns: 1fr;
  }

  .model-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .model-stat {
    text-align: left;
  }
}