/* ================================================
   DESIGN TOKENS - Physics LMS Premium Theme
   ================================================ */
:root {
  /* Primary Palette - Deep Space Indigo */
  --primary-900: #0a0a1a;
  --primary-800: #12122e;
  --primary-700: #1a1a3e;
  --primary-600: #252550;
  --primary-500: #2d2d6b;
  --primary-400: #4a4a8a;
  --primary-300: #6c63ff;
  --primary-200: #8b83ff;
  --primary-100: #b8b3ff;
  --primary-50: #eeedff;

  /* Accent - Electric Violet */
  --accent-500: #6c63ff;
  --accent-400: #7c74ff;
  --accent-300: #9d96ff;
  --accent-glow: rgba(108, 99, 255, 0.4);

  /* Secondary - Cyan */
  --cyan-500: #00d4ff;
  --cyan-400: #33ddff;
  --cyan-300: #66e6ff;
  --cyan-glow: rgba(0, 212, 255, 0.3);

  /* Success / Error / Warning */
  --success-500: #10b981;
  --success-400: #34d399;
  --success-bg: rgba(16, 185, 129, 0.1);
  --error-500: #ef4444;
  --error-400: #f87171;
  --error-bg: rgba(239, 68, 68, 0.1);
  --warning-500: #f59e0b;
  --warning-400: #fbbf24;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --info-500: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.1);

  /* Gold / Silver / Bronze for podium */
  --gold: #ffd700;
  --gold-glow: rgba(255, 215, 0, 0.4);
  --silver: #c0c0c0;
  --silver-glow: rgba(192, 192, 192, 0.3);
  --bronze: #cd7f32;
  --bronze-glow: rgba(205, 127, 50, 0.3);

  /* Neutrals */
  --neutral-900: #0f0f1a;
  --neutral-800: #1a1a2e;
  --neutral-700: #2a2a40;
  --neutral-600: #3a3a55;
  --neutral-500: #5a5a75;
  --neutral-400: #8888a0;
  --neutral-300: #acacc0;
  --neutral-200: #d0d0e0;
  --neutral-100: #e8e8f0;
  --neutral-50: #f5f5fa;
  --white: #ffffff;

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-hover: rgba(255, 255, 255, 0.1);
  --glass-strong: rgba(255, 255, 255, 0.12);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6c63ff 0%, #00d4ff 100%);
  --gradient-dark: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 100%);
  --gradient-card: linear-gradient(135deg, rgba(108, 99, 255, 0.1) 0%, rgba(0, 212, 255, 0.05) 100%);
  --gradient-sidebar: linear-gradient(180deg, #0f0f2a 0%, #1a1040 100%);
  --gradient-gold: linear-gradient(135deg, #ffd700, #ffaa00);
  --gradient-silver: linear-gradient(135deg, #e0e0e0, #a0a0a0);
  --gradient-bronze: linear-gradient(135deg, #cd7f32, #a0622a);
  --gradient-success: linear-gradient(135deg, #10b981, #059669);
  --gradient-danger: linear-gradient(135deg, #ef4444, #dc2626);

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.8125rem;
  --fs-base: 0.9375rem;
  --fs-md: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 1.875rem;
  --fs-4xl: 2.25rem;
  --fs-5xl: 3rem;
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* 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;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px 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 30px rgba(108, 99, 255, 0.3);
  --shadow-cyan-glow: 0 0 30px rgba(0, 212, 255, 0.2);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-collapsed: 72px;
  --topbar-height: 64px;
}