/* ============================================
   WbaChat - Design Tokens
   ============================================ */

:root {
  /* Brand */
  --brand-primary: #25d366;
  --brand-primary-hover: #1ebe5b;
  --brand-secondary: #128c7e;
  --brand-accent: #34b7f1;
  --brand-dark: #075e54;

  /* Surfaces - Light */
  --bg: #f6f8fb;
  --bg-elevated: #ffffff;
  --bg-muted: #eef1f6;
  --surface: #ffffff;
  --surface-glass: rgba(255, 255, 255, 0.65);
  --surface-glass-border: rgba(255, 255, 255, 0.5);

  /* Text */
  --text-primary: #0f1726;
  --text-secondary: #4a5568;
  --text-tertiary: #8a94a6;
  --text-inverse: #ffffff;

  /* Border */
  --border: #e6eaf0;
  --border-strong: #d5dbe5;

  /* Status */
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.10);
  --shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.18);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --sidebar-width: 264px;
  --topbar-height: 64px;
  --container-max: 1240px;

  /* Animation */
  --ease: cubic-bezier(.4,.0,.2,1);
  --dur-fast: 150ms;
  --dur: 220ms;
  --dur-slow: 360ms;

  /* Gradient */
  --gradient-brand: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  --gradient-hero: radial-gradient(1200px 600px at 20% 0%, rgba(37,211,102,.18), transparent 60%),
                   radial-gradient(900px 500px at 90% 10%, rgba(52,183,241,.16), transparent 55%);
}

[data-theme="dark"] {
  --bg: #0b1220;
  --bg-elevated: #111a2c;
  --bg-muted: #0e1626;
  --surface: #131c30;
  --surface-glass: rgba(19, 28, 48, 0.65);
  --surface-glass-border: rgba(255, 255, 255, 0.08);

  --text-primary: #e8edf7;
  --text-secondary: #aab4c5;
  --text-tertiary: #6e7990;
  --text-inverse: #0f1726;

  --border: #1f2a40;
  --border-strong: #2a3753;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.55);

  --gradient-hero: radial-gradient(1200px 600px at 20% 0%, rgba(37,211,102,.16), transparent 60%),
                   radial-gradient(900px 500px at 90% 10%, rgba(52,183,241,.14), transparent 55%);
}