/* ==========================================================================
   Design System Variables - Pure OLED Monochrome & Gentle Sky Blue Themes
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme (Strictly OLED Black, Greys & Whites) */
  --bg-primary: #000000;         /* 100% OLED Black */
  --bg-secondary: #0a0a0c;       /* Deep Charcoal */
  --bg-surface: rgba(18, 18, 22, 0.9);
  --bg-surface-hover: rgba(32, 32, 40, 0.95);
  --bg-card: #121216;

  --text-primary: #ffffff;
  --text-secondary: #d4d4d8;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;

  --accent-primary: #ffffff;     /* Pure White */
  --accent-secondary: #e4e4e7;   /* Light Silver */
  --accent-highlight: #fafafa;

  --gradient-btn: linear-gradient(135deg, #ffffff 0%, #e4e4e7 100%);

  --border-color: rgba(255, 255, 255, 0.15);
  --border-hover: rgba(255, 255, 255, 0.4);

  /* Glassmorphism & Effects */
  --glass-bg: rgba(14, 14, 18, 0.9);
  --glass-border: 1px solid rgba(255, 255, 255, 0.16);
  --glass-blur: blur(24px);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.6);
  --shadow-md: 0 10px 20px -3px rgba(0, 0, 0, 0.8);
  --shadow-lg: 0 25px 40px -5px rgba(0, 0, 0, 0.9), 0 0 20px rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slide: 0.6s cubic-bezier(0.77, 0, 0.175, 1);

  /* Layout */
  --container-max-width: 1250px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --header-height: 75px;
}

/* Light Theme - Gentle Sky Blue Background with White Surface Elements */
[data-theme="light"] {
  --bg-primary: #e0f2fe;         /* Gentle Sky Blue */
  --bg-secondary: #f0f7ff;
  --bg-surface: rgba(255, 255, 255, 0.95);
  --bg-surface-hover: #ffffff;
  --bg-card: #ffffff;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  --accent-primary: #0f172a;
  --accent-secondary: #1e293b;
  --accent-highlight: #0284c7;

  --gradient-btn: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);

  --border-color: rgba(15, 23, 42, 0.12);
  --border-hover: rgba(15, 23, 42, 0.35);

  --glass-bg: rgba(255, 255, 255, 0.95);
  --glass-border: 1px solid rgba(15, 23, 42, 0.12);
  --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 20px -3px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 25px 35px -5px rgba(15, 23, 42, 0.12);
}