/* ============================================
   WorkflowForge Design System
   Premium Apple-inspired design tokens
   ============================================ */

:root {
  /* ---- Colors ---- */
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-tertiary: #18181b;
  --bg-card: #1c1c1f;
  --bg-card-hover: #232326;
  --bg-elevated: #27272a;
  --bg-glass: rgba(28, 28, 31, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.06);
  
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --text-muted: #52525b;
  
  --accent-primary: #6366f1;
  --accent-primary-hover: #818cf8;
  --accent-primary-soft: rgba(99, 102, 241, 0.12);
  --accent-primary-glow: rgba(99, 102, 241, 0.25);
  
  --accent-success: #22c55e;
  --accent-success-soft: rgba(34, 197, 94, 0.12);
  --accent-warning: #f59e0b;
  --accent-warning-soft: rgba(245, 158, 11, 0.12);
  --accent-error: #ef4444;
  --accent-error-soft: rgba(239, 68, 68, 0.12);
  --accent-info: #06b6d4;
  --accent-info-soft: rgba(6, 182, 212, 0.12);
  
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(99, 102, 241, 0.4);
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3), 0 0 1px rgba(255, 255, 255, 0.05);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 1px rgba(255, 255, 255, 0.08);
  
  /* ---- Typography ---- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;
  
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;
  
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* ---- 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;
  
  /* ---- Radius ---- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;
  
  /* ---- Transitions ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;
  
  /* ---- Layout ---- */
  --sidebar-width: 320px;
  --app-sidebar-width: 240px;
  --max-content: 1200px;
  --header-height: 64px;
}

/* ============================================
   Reset & Base
   ============================================ */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  height: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: var(--leading-normal);
  overflow-x: hidden;
  min-height: 100vh;
  min-height: 100dvh;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; color: inherit; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }

::selection {
  background: var(--accent-primary);
  color: white;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}