/* AuditLabs - Design System Variables */
/* Professional Light Theme - "Built by an SEO, for SEOs" */

:root {
  /* ============================================
     COLOR PALETTE - AuditLabs Light Theme
     White + Light Blue professional palette
     ============================================ */

  /* Backgrounds - Light/White theme */
  --bg-primary: #ffffff;           /* White - main background */
  --bg-secondary: #f8fafc;         /* Very light gray for sections */
  --bg-tertiary: #f1f5f9;          /* Slightly darker for contrast */
  --bg-code: #f1f5f9;              /* Light gray for code blocks */
  --bg-elevated: #ffffff;          /* Cards, elevated surfaces */

  /* Text - Dark on light */
  --text-primary: #1e293b;         /* Dark slate - primary text */
  --text-secondary: #64748b;       /* Muted slate */
  --text-tertiary: #94a3b8;        /* Even more muted */
  --text-inverse: #ffffff;         /* For dark backgrounds */

  /* Accent - Light Blue brand color */
  --accent-primary: #0ea5e9;       /* Sky blue - buttons, links, accents */
  --accent-primary-hover: #0284c7; /* Darker hover state */
  --accent-secondary: #6366f1;     /* Indigo for secondary accents */
  --accent-secondary-hover: #4f46e5;

  /* Legacy aliases for compatibility */
  --primary-action: var(--accent-primary);
  --primary-dark: #0c4a6e;
  --primary-light: #e0f2fe;
  --accent-purple: #8b5cf6;
  --accent-cyan: var(--accent-primary);

  /* Functional Colors */
  --success: #22c55e;              /* Green for success states */
  --success-bg: #f0fdf4;
  --warning: #f59e0b;              /* Amber for warnings */
  --warning-bg: #fffbeb;
  --error: #ef4444;                /* Red for errors */
  --error-bg: #fef2f2;
  --info: #3b82f6;                 /* Blue for info */
  --info-bg: #eff6ff;

  /* Borders - Subtle on light */
  --border-primary: #e2e8f0;       /* Light gray borders */
  --border-secondary: #cbd5e1;     /* Slightly darker */
  --border-focus: var(--accent-primary);
  --border-color: var(--border-primary);  /* Alias for compatibility */
  --glass-border: var(--border-primary);

  /* Dark Mode Variant (keeping for compatibility) */
  --dark-bg: #0f172a;
  --dark-bg-secondary: #1e293b;
  --dark-border: #334155;
  --dark-text: #f8fafc;

  /* ============================================
     TYPOGRAPHY - Clean Sans-Serif
     ============================================ */

  /* Font Families */
  --font-primary: 'Inter', 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', monospace;

  /* Font Sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-regular: 400;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Letter Spacing */
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;

  /* ============================================
     SPACING SYSTEM (8px base unit)
     ============================================ */

  --space-0: 0;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 2.5rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-10: 5rem;
  --space-12: 6rem;

  /* Legacy spacing aliases for compatibility */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* ============================================
     LAYOUT
     ============================================ */

  --sidebar-width: 220px;
  --sidebar-bg: #ffffff;
  --sidebar-border: var(--border-primary);
  --container-max-width: 1400px;
  --container-padding: var(--space-4);

  /* ============================================
     BORDERS & RADIUS
     ============================================ */

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;
  --border-thin: 1px;
  --border-medium: 2px;
  --border-thick: 4px;

  /* Legacy border-radius aliases for compatibility */
  --border-radius-sm: 4px;
  --border-radius-md: 6px;
  --border-radius-lg: 8px;
  --border-radius-xl: 12px;

  /* ============================================
     SHADOWS - Soft for light theme
     ============================================ */

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  --ring-focus: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--accent-primary);

  /* ============================================
     TRANSITIONS & ANIMATIONS
     ============================================ */

  --transition-fast: 150ms;
  --transition-base: 250ms;
  --transition-slow: 350ms;
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --transition-all-fast: all var(--transition-fast) var(--ease-in-out);
  --transition-all-base: all var(--transition-base) var(--ease-in-out);
  --transition-all-slow: all var(--transition-slow) var(--ease-in-out);

  /* ============================================
     Z-INDEX LAYERS
     ============================================ */

  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;

  /* ============================================
     BREAKPOINTS
     ============================================ */

  --breakpoint-sm: 480px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}