/* ==========================================================================
   Automind — Design Tokens & Variables
   ========================================================================== */

:root {
  /* Brand Colors */
  --color-primary: #2563EB;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1D4ED8;
  --color-secondary: #0F172A;
  --color-accent: #06B6D4;
  --color-accent-light: #22D3EE;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* Backgrounds */
  --bg-base: #020617;
  --bg-elevated: #0F172A;
  --bg-card: #111827;
  --bg-card-hover: #1E293B;
  --bg-glass: rgba(17, 24, 39, 0.6);
  --bg-glass-light: rgba(255, 255, 255, 0.05);
  --bg-overlay: rgba(2, 6, 23, 0.8);

  /* Text */
  --text-primary: #FFFFFF;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  /* Borders */
  --border-subtle: rgba(148, 163, 184, 0.1);
  --border-default: rgba(148, 163, 184, 0.2);
  --border-strong: rgba(148, 163, 184, 0.3);
  --border-glow: rgba(37, 99, 235, 0.5);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #2563EB 0%, #06B6D4 50%, #8B5CF6 100%);
  --gradient-blue-cyan: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
  --gradient-cyan-purple: linear-gradient(135deg, #06B6D4 0%, #8B5CF6 100%);
  --gradient-blue-purple: linear-gradient(135deg, #2563EB 0%, #8B5CF6 100%);
  --gradient-text: linear-gradient(135deg, #3B82F6 0%, #22D3EE 50%, #A78BFA 100%);
  --gradient-glow: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
  --gradient-mesh: radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
                   radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
                   radial-gradient(at 50% 100%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.3);
  --shadow-glow-accent: 0 0 30px rgba(6, 182, 212, 0.3);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font Sizes (fluid) */
  --fs-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8rem);
  --fs-sm: clamp(0.875rem, 0.8rem + 0.3vw, 0.95rem);
  --fs-base: clamp(1rem, 0.9rem + 0.4vw, 1.1rem);
  --fs-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
  --fs-xl: clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem);
  --fs-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --fs-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.5rem);
  --fs-4xl: clamp(2.25rem, 1.8rem + 2vw, 3.5rem);
  --fs-5xl: clamp(2.5rem, 2rem + 2.5vw, 4.5rem);
  --fs-6xl: clamp(3rem, 2.5rem + 3vw, 5.5rem);

  /* Font Weights */
  --fw-light: 300;
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* Line Heights */
  --lh-tight: 1.1;
  --lh-snug: 1.2;
  --lh-normal: 1.5;
  --lh-relaxed: 1.625;
  --lh-loose: 1.8;

  /* Spacing (8px system) */
  --space-0: 0;
  --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;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 800px;
  --header-height: 72px;

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-toast: 600;
  --z-loading: 999;
}

/* Light Mode Overrides */
[data-theme="light"] {
  --bg-base: #F8FAFC;
  --bg-elevated: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-light: rgba(15, 23, 42, 0.05);
  --bg-overlay: rgba(248, 250, 252, 0.8);

  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --text-dim: #94A3B8;

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-default: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(15, 23, 42, 0.2);

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 10px 15px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 20px 25px rgba(15, 23, 42, 0.15);
  --shadow-2xl: 0 25px 50px rgba(15, 23, 42, 0.2);
  --shadow-card: 0 4px 20px rgba(15, 23, 42, 0.08);

  --gradient-mesh: radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                   radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
                   radial-gradient(at 50% 100%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
}