/**
 * TracRunner - Shared CSS Variables and Base Styles
 * Used across all games and landing page
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
  /* Colors */
  --bg-primary: #0f0f1a;
  --bg-secondary: #12121f;
  --bg-tertiary: #1a1a2e;
  --bg-card: rgba(18, 18, 31, 0.95);

  /* Accent Colors */
  --accent-primary: #00d9ff;
  --accent-secondary: #8b00ff;
  --accent-gradient: linear-gradient(135deg, #00d9ff, #8b00ff);

  /* Status Colors */
  --success: #00ff88;
  --warning: #ffc107;
  --danger: #ff4444;
  --info: #00d9ff;

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

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(0, 217, 255, 0.3);

  /* Spacing */
  --header-height: 60px;
  --nav-height: 60px;
  --content-padding: 1rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.3);
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ============================================
   COMMON BUTTON STYLES
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.btn-primary:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
}

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

.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   COMMON UTILITY CLASSES
   ============================================ */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.text-success {
  color: var(--success);
}

.text-danger {
  color: var(--danger);
}

.text-warning {
  color: var(--warning);
}