/* ============================================
   CSS Variables - Design Tokens
   ============================================ */

:root {
    /* ----------------------------------------
       Typography
       ---------------------------------------- */
    --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', monospace;
    
    /* Font Sizes */
    --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;
    
    /* ----------------------------------------
       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;
    
    /* ----------------------------------------
       Border Radius
       ---------------------------------------- */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* ----------------------------------------
       Transitions
       ---------------------------------------- */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-slower: 700ms ease;
    
    /* ----------------------------------------
       Shadows
       ---------------------------------------- */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* ----------------------------------------
       Z-Index Scale
       ---------------------------------------- */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* ============================================
   Light Theme (Default)
   ============================================ */

:root {
    /* Primary Colors */
    --accent-primary: #0d0d0d;
    --accent-secondary: #262626;
    --accent-muted: #525252;
    
    /* Background Colors */
    --bg-primary: #fafafa;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e5e5e5;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(255, 255, 255, 0.8);
    
    /* Text Colors */
    --text-primary: #171717;
    --text-secondary: #525252;
    --text-tertiary: #737373;
    --text-muted: #a3a3a3;
    --text-inverse: #ffffff;
    
    /* Border Colors */
    --border-light: #f5f5f5;
    --border-medium: #e5e5e5;
    --border-strong: #d4d4d4;
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    
    /* Gradient Orbs */
    --orb-1: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%);
    --orb-2: radial-gradient(circle at 70% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    --orb-3: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
}

/* ============================================
   Dark Theme
   ============================================ */

[data-theme="dark"] {
    /* Primary Colors */
    --accent-primary: #f5f5f5;
    --accent-secondary: #d4d4d4;
    --accent-muted: #a3a3a3;
    
    /* Background Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #171717;
    --bg-tertiary: #262626;
    --bg-elevated: #1a1a1a;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    
    /* Text Colors */
    --text-primary: #fafafa;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --text-muted: #525252;
    --text-inverse: #171717;
    
    /* Border Colors */
    --border-light: #262626;
    --border-medium: #404040;
    --border-strong: #525252;
    
    /* Glass Effect */
    --glass-bg: rgba(23, 23, 23, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* Gradient Orbs */
    --orb-1: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.2) 0%, transparent 50%);
    --orb-2: radial-gradient(circle at 70% 80%, rgba(236, 72, 153, 0.15) 0%, transparent 50%);
    --orb-3: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.12) 0%, transparent 60%);
}