/* ===== CSS Variables & Design Tokens ===== */
:root {
  /* Colors - Unified with main styles */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-color: #667eea;
  --accent-hover: #5a6fd6;

  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: rgba(30, 30, 50, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.05);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);

  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(102, 126, 234, 0.5);

  /* Spacing */
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Border Radius */
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);
}

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

body {
  font-family:
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  padding: var(--spacing-xl);
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(240, 147, 251, 0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

header p {
  color: var(--text-secondary);
}

/* Tab Navigation */
.tab-container {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.tab-btn {
  padding: 0.75rem 2rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover {
  background: rgba(102, 126, 234, 0.1);
  border-color: var(--border-glow);
}

.tab-btn.active {
  background: var(--primary-gradient);
  border-color: transparent;
  color: var(--text-primary);
}

/* Two Column Layout */
.columns-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.column {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
}

.column h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Table Sections */
.record-section {
  margin-bottom: var(--spacing-lg);
}

.record-section:last-child {
  margin-bottom: 0;
}

.record-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

/* Tables */
.records-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.records-table th,
.records-table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.records-table th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.records-table td {
  color: var(--text-primary);
}

/* Stacked cell styling - time on top, athlete below */
.records-table td.stacked-cell {
  padding: 0.5rem 0.75rem;
}

.records-table .stacked-cell .time {
  display: block;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  color: var(--accent-color);
  font-weight: 500;
  font-size: 0.875rem;
}

.records-table .stacked-cell .athlete {
  display: block;
  color: var(--text-muted);
  font-size: 0.75rem;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 2px;
}

/* Loading State */
.loading {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
}

/* Footer */
footer {
  text-align: center;
  margin-top: var(--spacing-xl);
  font-size: 0.875rem;
  color: var(--text-muted);
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

footer a:hover {
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 900px) {
  .columns-container {
    grid-template-columns: 1fr;
  }

  header h1 {
    font-size: 2rem;
  }
}