/* ============================================================
   DESIGN SYSTEM
   Premium production-ready design tokens
   Inspired by Apple, Linear, Notion, ChatGPT, Arc Browser, Raycast
   ============================================================ */

:root {
  /* ============================================================
     COLOR SYSTEM - DARK THEME (Default)
     Background is pure black (#000000) for OLED feel
     ============================================================ */
  
  /* Backgrounds */
  --color-bg: #000000;
  --color-bg-primary: #000000;
  --color-bg-secondary: #080808;
  --color-bg-elevated: #101010;
  --color-bg-card: #101010;
  --color-bg-hover: #1A1A1A;
  --color-bg-active: #242424;
  --color-bg-disabled: #080808;
  
  /* Borders */
  --color-border: #E7E2EB;
  --color-border-hover: #D8D1E0;
  --color-border-focus: #7E6DD8;
  --color-border-disabled: #F1EEF3;
  
  /* Text */
  --color-text-primary: #272335;
  --color-text-secondary: #6E687B;
  --color-text-tertiary: #9891A4;
  --color-text-disabled: #B7B1BF;
  --color-text-inverse: #FFFFFF;
  
  /* Brand Colors */
  --color-brand-primary: #7C69D8;
  --color-brand-secondary: #6756C0;
  --color-brand-hover: #6F5DCA;
  --color-brand-active: #5E4BB3;
  --color-brand-subtle: rgba(124, 105, 216, 0.12);
  --color-brand-subtle-hover: rgba(124, 105, 216, 0.19);
  
  /* Semantic Colors */
  --color-success: #10B981;
  --color-success-subtle: rgba(16, 185, 129, 0.15);
  --color-warning: #F59E0B;
  --color-warning-subtle: rgba(245, 158, 11, 0.15);
  --color-danger: #EF4444;
  --color-danger-subtle: rgba(239, 68, 68, 0.15);
  --color-danger-dark: #B91C1C;
  --color-info: #3B82F6;
  --color-info-subtle: rgba(59, 130, 246, 0.15);
  --color-error-bg: var(--color-danger-subtle);
  --color-error-border: var(--color-danger);
  --color-error-primary: var(--color-danger);
  --color-error-dark: var(--color-danger-dark);
  --color-error-text: var(--color-text-primary);
  --color-surface-primary: var(--color-bg-elevated);
  --color-surface-secondary: var(--color-bg-secondary);
  --color-surface-tertiary: var(--color-bg-hover);
  
  /* ============================================================
     TYPOGRAPHY SCALE
     ============================================================ */
  
  /* Font Families */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-serif: 'Fraunces', Georgia, serif;
  --font-family-mono: 'SF Mono', 'Fira Code', monospace;
  
  /* Font Sizes */
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-size-5xl: 48px;
  --font-size-6xl: 60px;
  
  /* Font Weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-snug: 1.4;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  --line-height-loose: 1.8;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.02em;
  
  /* ============================================================
     SPACING SCALE (8px system)
     ============================================================ */
  
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  
  /* ============================================================
     BORDER RADIUS
     ============================================================ */
  
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;
  
  /* ============================================================
     SHADOWS & ELEVATION
     ============================================================ */
  
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.22);
  --shadow-sm: 0 6px 14px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 12px 28px rgba(0, 0, 0, 0.24);
  --shadow-lg: 0 22px 46px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 28px 70px rgba(0, 0, 0, 0.42);
  --shadow-2xl: 0 38px 92px rgba(0, 0, 0, 0.5);
  
  /* Inner shadows for depth */
  --shadow-inner: inset 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-inner-lg: inset 0 2px 4px rgba(0, 0, 0, 0.4);
  
  /* Glow effects */
  --glow-brand: 0 0 20px rgba(139, 92, 246, 0.3);
  --glow-success: 0 0 20px rgba(16, 185, 129, 0.3);
  --glow-danger: 0 0 20px rgba(239, 68, 68, 0.3);
  
  /* ============================================================
     ANIMATION DURATIONS
     ============================================================ */
  
  --duration-instant: 50ms;
  --duration-fast: 100ms;
  --duration-normal: 150ms;
  --duration-slow: 200ms;
  --duration-slower: 250ms;
  --duration-slowest: 300ms;
  
  /* ============================================================
     TRANSITION TIMING FUNCTIONS
     ============================================================ */
  
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --easing-default: var(--ease-out);
  
  /* ============================================================
     Z-INDEX SCALE
     ============================================================ */
  
  --z-index-dropdown: 100;
  --z-index-sticky: 200;
  --z-index-fixed: 300;
  --z-index-modal-backdrop: 400;
  --z-index-modal: 500;
  --z-index-popover: 600;
  --z-index-tooltip: 700;
  --z-index-toast: 800;
  --z-index-max: 9999;
  
  /* ============================================================
     RESPONSIVE BREAKPOINTS
     ============================================================ */
  
  --breakpoint-xs: 375px;
  --breakpoint-sm: 480px;
  --breakpoint-md: 640px;
  --breakpoint-lg: 768px;
  --breakpoint-xl: 1024px;
  --breakpoint-2xl: 1280px;
  --breakpoint-3xl: 1536px;
  
  /* ============================================================
     COMPONENT SIZES
     ============================================================ */
  
  /* Button Heights */
  --size-button-sm: 32px;
  --size-button-md: 40px;
  --size-button-lg: 48px;
  --size-button-xl: 56px;
  
  /* Input Heights */
  --size-input-sm: 32px;
  --size-input-md: 40px;
  --size-input-lg: 48px;
  
  /* Avatar Sizes */
  --size-avatar-xs: 24px;
  --size-avatar-sm: 32px;
  --size-avatar-md: 40px;
  --size-avatar-lg: 48px;
  --size-avatar-xl: 64px;
  --size-avatar-2xl: 96px;
  
  /* Icon Sizes */
  --size-icon-xs: 12px;
  --size-icon-sm: 16px;
  --size-icon-md: 20px;
  --size-icon-lg: 24px;
  --size-icon-xl: 32px;
  
  /* ============================================================
     LAYOUT
     ============================================================ */
  
  --layout-max-width: 1200px;
  --layout-content-width: 800px;
  --layout-sidebar-width: 280px;
  --layout-header-height: 64px;
  --layout-tab-height: 70px;
  
  /* ============================================================
     OVERLAYS
     ============================================================ */
  
  --overlay-subtle: rgba(0, 0, 0, 0.3);
  --overlay-normal: rgba(0, 0, 0, 0.5);
  --overlay-strong: rgba(0, 0, 0, 0.7);
  --overlay-brand: rgba(139, 92, 246, 0.9);
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */

/* Spacing Utilities */
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.px-1 { padding-left: var(--space-1); padding-right: var(--space-1); }
.px-2 { padding-left: var(--space-2); padding-right: var(--space-2); }
.px-3 { padding-left: var(--space-3); padding-right: var(--space-3); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }

.py-1 { padding-top: var(--space-1); padding-bottom: var(--space-1); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }

.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-3 { margin: var(--space-3); }
.m-4 { margin: var(--space-4); }
.m-6 { margin: var(--space-6); }
.m-8 { margin: var(--space-8); }

.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

/* Typography Utilities */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-md { font-size: var(--font-size-md); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.font-regular { font-weight: var(--font-weight-regular); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }

/* Color Utilities */
.text-brand { color: var(--color-brand-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }

.bg-brand { background-color: var(--color-brand-primary); }
.bg-success { background-color: var(--color-success); }
.bg-warning { background-color: var(--color-warning); }
.bg-danger { background-color: var(--color-danger); }

/* Border Utilities */
.border { border: 1px solid var(--color-border); }
.border-brand { border-color: var(--color-brand-primary); }
.border-success { border-color: var(--color-success); }
.border-danger { border-color: var(--color-danger); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadow Utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Display Utilities */
.hidden { display: none !important; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

/* Position Utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }

/* Cursor Utilities */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* Transition Utilities */
.transition { transition: all var(--duration-normal) var(--ease-out); }
.transition-fast { transition: all var(--duration-fast) var(--ease-out); }
.transition-slow { transition: all var(--duration-slow) var(--ease-out); }

/* Overflow Utilities */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }