/* Pustakalay Design System Tokens */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=Merriweather:ital,wght@0,300;0,400;0,700;1,300&display=swap');

:root {
  /* Brand Fonts */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-reader: 'Merriweather', Georgia, serif;

  /* Color Palette - Default Light Theme */
  --bg-main: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #FFFFFF;
  --bg-surface-translucent: rgba(255, 255, 255, 0.85);
  --bg-sidebar: #0F172A;
  --bg-sidebar-hover: #1E293B;
  --bg-sidebar-active: #334155;
  
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-inverse: #F8FAFC;

  /* Brand Accents */
  --brand-primary: #D97706; /* Warm Amber / Book gold */
  --brand-primary-hover: #B45309;
  --brand-primary-light: #FEF3C7;
  --brand-accent: #6366F1; /* Indigo Digital Accent */
  --brand-accent-hover: #4F46E5;
  --brand-accent-light: #EEF2FF;
  
  /* Status Colors */
  --color-success: #10B981;
  --color-success-bg: #D1FAE5;
  --color-warning: #F59E0B;
  --color-warning-bg: #FEF3C7;
  --color-danger: #EF4444;
  --color-danger-bg: #FEE2E2;
  --color-info: #3B82F6;
  --color-info-bg: #DBEAFE;

  /* Reader Theme Variants */
  --reader-light-bg: #FFFFFF;
  --reader-light-text: #1E293B;
  
  --reader-dark-bg: #0F172A;
  --reader-dark-text: #E2E8F0;

  --reader-sepia-bg: #FBF0D9;
  --reader-sepia-text: #4A3B2C;

  /* Borders & Dividers */
  --border-color: #E2E8F0;
  --border-color-subtle: #F1F5F9;
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 18px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;

  /* Shadows & Elevation */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.12), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(217, 119, 6, 0.25);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-blur: blur(16px);
}

/* Dark Mode Tokens Override */
[data-theme="dark"] {
  --bg-main: #0B0F19;
  --bg-surface: #151D2A;
  --bg-surface-elevated: #1E293B;
  --bg-surface-translucent: rgba(21, 29, 42, 0.85);
  --bg-sidebar: #070A12;
  --bg-sidebar-hover: #151D2A;
  --bg-sidebar-active: #1E293B;

  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverse: #0F172A;

  --border-color: #334155;
  --border-color-subtle: #1E293B;

  --brand-primary-light: rgba(217, 119, 6, 0.2);
  --brand-accent-light: rgba(99, 102, 241, 0.2);

  --glass-bg: rgba(21, 29, 42, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
}