/* ============================================
   EDUVAULT - Design System Variables
   ============================================ */

:root {
  /* ── Color Palette ── */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-elevated: #ffffff;
  --bg-input: #f1f5f9;
  --bg-overlay: rgba(255, 255, 255, 0.88);

  /* Accent – Violet/Indigo */
  --accent-primary: #7c3aed;
  --accent-primary-hover: #6d28d9;
  --accent-primary-muted: rgba(124, 58, 237, 0.1);
  --accent-primary-glow: rgba(124, 58, 237, 0.25);
  --accent-gradient: linear-gradient(135deg, #7c3aed, #4f46e5);
  --accent-gradient-hover: linear-gradient(135deg, #6d28d9, #4338ca);

  /* Accent – Electric Cyan -> Deep Teal for light theme visibility */
  --accent-blue: #0891b2;
  --accent-blue-hover: #0e7490;
  --accent-blue-muted: rgba(8, 145, 178, 0.1);

  /* Text */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-on-accent: #ffffff;

  /* Borders */
  --border-primary: rgba(15, 23, 42, 0.08);
  --border-secondary: rgba(15, 23, 42, 0.15);
  --border-accent: rgba(124, 58, 237, 0.3);

  /* Status */
  --success: #059669;
  --warning: #d97706;
  --error: #dc2626;
  --info: #2563eb;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 24px var(--accent-primary-glow);
  
  /* Glassmorphism & Neumorphism */
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.8);
  --glass-border-highlight: rgba(255, 255, 255, 1);
  --glass-blur: blur(16px);
  --neu-shadow-inset: inset 2px 2px 4px rgba(0, 0, 0, 0.03), inset -2px -2px 4px rgba(255, 255, 255, 0.8);

  /* ── Typography ── */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.5rem;
  --fs-4xl: 3.5rem;
  --fs-5xl: 4.5rem;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  --lh-tight: 1.2;
  --lh-normal: 1.5;
  --lh-relaxed: 1.75;

  /* ── 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;
  --space-32: 8rem;

  /* ── Layout ── */
  --container-max: 1280px;
  --container-wide: 1440px;
  --sidebar-width: 280px;
  --header-height: 72px;

  /* ── Border Radius ── */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  /* ── Transitions ── */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms var(--ease-smooth);
  --transition-base: 250ms var(--ease-smooth);
  --transition-slow: 400ms var(--ease-smooth);

  /* ── Z-Index ── */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}