/**
 * Auvira Theme - CSS Variables
 * 
 * Core design tokens for the Auvira brand system
 * These are the BASE values - brand-specific colors are injected via PHP
 */

:root {
  /* ==========================================================================
     COLORS - Base Palette
     Note: --brand-primary, --brand-secondary, --brand-accent are set dynamically
     ========================================================================== */
  
  /* Primary Colors (defaults - overridden by brand) */
  --color-primary: var(--brand-primary, #1E3A5F);
  --color-primary-light: color-mix(in srgb, var(--color-primary) 80%, white);
  --color-primary-dark: color-mix(in srgb, var(--color-primary) 80%, black);
  
  /* Secondary Colors */
  --color-secondary: var(--brand-secondary, #3B82A0);
  --color-secondary-light: color-mix(in srgb, var(--color-secondary) 80%, white);
  --color-secondary-dark: color-mix(in srgb, var(--color-secondary) 80%, black);
  
  /* Accent Colors */
  --color-accent: var(--brand-accent, #F0B429);
  --color-accent-light: color-mix(in srgb, var(--color-accent) 80%, white);
  --color-accent-dark: color-mix(in srgb, var(--color-accent) 80%, black);
  
  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-off-white: #FAFBFC;
  --color-light-grey: #E2E8F0;
  --color-medium-grey: #64748B;
  --color-dark-grey: #475569;
  --color-charcoal: #1A202C;
  --color-black: #000000;
  
  /* Background Colors */
  --color-background: var(--color-off-white);
  --color-surface: var(--color-white);
  --color-surface-elevated: var(--color-white);
  
  /* Text Colors */
  --color-text-primary: var(--color-charcoal);
  --color-text-secondary: var(--color-medium-grey);
  --color-text-muted: #94A3B8;
  --color-text-inverse: var(--color-white);
  
  /* Border Colors */
  --color-border: var(--color-light-grey);
  --color-border-light: #F1F5F9;
  --color-border-dark: #CBD5E1;
  
  /* Semantic Colors */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-info: #3B82F6;
  --color-info-light: #DBEAFE;
  
  /* ==========================================================================
     TYPOGRAPHY
     ========================================================================== */
  
  /* Font Families */
  --font-logo: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  --text-7xl: 4.5rem;      /* 72px */
  
  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;
  
  /* ==========================================================================
     SPACING
     ========================================================================== */
  
  --space-0: 0;
  --space-1: 0.25rem;      /* 4px */
  --space-2: 0.5rem;       /* 8px */
  --space-3: 0.75rem;      /* 12px */
  --space-4: 1rem;         /* 16px */
  --space-5: 1.25rem;      /* 20px */
  --space-6: 1.5rem;       /* 24px */
  --space-8: 2rem;         /* 32px */
  --space-10: 2.5rem;      /* 40px */
  --space-12: 3rem;        /* 48px */
  --space-16: 4rem;        /* 64px */
  --space-20: 5rem;        /* 80px */
  --space-24: 6rem;        /* 96px */
  --space-32: 8rem;        /* 128px */
  
  /* ==========================================================================
     LAYOUT
     ========================================================================== */
  
  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1440px;
  
  /* Content Width */
  --content-width: 1200px;
  --content-narrow: 720px;
  --content-wide: 1400px;
  
  /* Breakpoints (for reference - use in media queries) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* ==========================================================================
     BORDERS & RADIUS
     ========================================================================== */
  
  --border-width: 1px;
  --border-width-2: 2px;
  
  --radius-none: 0;
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* ==========================================================================
     SHADOWS
     ========================================================================== */
  
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --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);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
  
  /* Colored shadows for buttons */
  --shadow-primary: 0 4px 14px 0 color-mix(in srgb, var(--color-primary) 30%, transparent);
  --shadow-accent: 0 4px 14px 0 color-mix(in srgb, var(--color-accent) 40%, transparent);
  
  /* ==========================================================================
     TRANSITIONS
     ========================================================================== */
  
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-slower: 500ms ease;
  
  /* Specific transitions */
  --transition-colors: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
  --transition-transform: transform var(--transition-base);
  --transition-opacity: opacity var(--transition-base);
  --transition-shadow: box-shadow var(--transition-base);
  --transition-all: all var(--transition-base);
  
  /* ==========================================================================
     Z-INDEX SCALE
     ========================================================================== */
  
  --z-below: -1;
  --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;
  --z-toast: 800;
  --z-max: 9999;
  
  /* ==========================================================================
     HEADER
     ========================================================================== */
  
  --header-height: 80px;
  --header-height-mobile: 64px;
}

/* ==========================================================================
   DARK MODE (Future - prepared but not active)
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root.auto-dark-mode {
    --color-background: #0F172A;
    --color-surface: #1E293B;
    --color-surface-elevated: #334155;
    --color-text-primary: #F1F5F9;
    --color-text-secondary: #94A3B8;
    --color-border: #334155;
  }
}