/* ============================================================
   AMERICAN AIR CONTROL — Design Tokens (Glassmorphism)
   Dark theme + blue/cyan accents + frosted glass
   ============================================================ */
:root {
  /* Core Colors */
  --bg-dark: #0a0e1a;
  --bg-surface: #111827;
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-hover: rgba(255, 255, 255, 0.08);
  --bg-glass-strong: rgba(255, 255, 255, 0.1);
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.1);

  /* Primary — Electric Blue / Cyan */
  --primary: #00b4d8;
  --primary-light: #48cae4;
  --primary-dark: #0096c7;
  --primary-glow: rgba(0, 180, 216, 0.3);
  --primary-subtle: rgba(0, 180, 216, 0.1);

  /* Secondary — Deep Blue */
  --secondary: #0077b6;
  --secondary-light: #023e8a;

  /* Accent — Warm Orange */
  --accent: #f97316;
  --accent-light: #fb923c;
  --accent-glow: rgba(249, 115, 22, 0.3);

  /* Neutral */
  --white: #ffffff;
  --fg: #e2e8f0;
  --fg-muted: #94a3b8;
  --fg-subtle: #64748b;
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.15);

  /* Status */
  --green: #22c55e;
  --green-light: rgba(34, 197, 94, 0.15);
  --red: #ef4444;
  --red-light: rgba(239, 68, 68, 0.15);
  --yellow: #eab308;
  --yellow-light: rgba(234, 179, 8, 0.15);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-hero: clamp(2.5rem, 6vw, 5rem);

  --leading-tight: 1.15;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-bold: 700;
  --weight-black: 900;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows & Glass */
  --glass-blur: blur(20px);
  --glass-blur-heavy: blur(40px);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--primary-glow);
  --shadow-glow-accent: 0 0 20px var(--accent-glow);

  /* Layout */
  --header-h: 72px;
  --max-w: 1200px;
  --max-w-sm: 640px;
  --max-w-md: 768px;

  /* Transitions */
  --duration: 0.3s;
  --duration-fast: 0.15s;
  --duration-slow: 0.5s;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Noise texture overlay — removed, using atmospheric gradient instead */