/* CSS Variables - Design System */

:root {
  /* ====== Colors ====== */
  /* Primary Colors */
  --color-primary: #1a237e;
  --color-primary-light: #3949ab;
  --color-primary-dark: #1a237e;
  
  /* Accent Colors */
  --color-accent: #4DD0E1;
  --color-accent-dark: #00acc1;
  --color-accent-light: #80deea;
  
  /* Secondary Colors */
  --color-secondary: #5c6bc0;
  --color-secondary-light: #7986cb;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-black: #000000;
  --color-text-dark: #222222;
  --color-text-light: #555555;
  --color-bg-light: #f7f7f7;
  --color-bg-pale: #f8f9fa;
  --color-border: #e0e6ed;
  --color-border-light: #e9ecef;
  
  /* Status Colors */
  --color-success: #4caf50;
  --color-warning: #ff9800;
  --color-error: #f44336;
  --color-info: #2196f3;
  
  /* ====== Typography ====== */
  --font-family-base: 'Apple SD Gothic Neo', 'Segoe UI', Arial, sans-serif;
  --font-family-serif: 'Libre Bodoni', serif;
  
  --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-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  
  /* ====== Spacing ====== */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-base: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  
  /* ====== Borders ====== */
  --border-radius-sm: 4px;
  --border-radius-base: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-full: 9999px;
  
  --border-width: 1px;
  --border-width-thick: 2px;
  
  /* ====== Shadows ====== */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-base: 0 4px 16px rgba(26, 35, 126, 0.08);
  --shadow-md: 0 8px 24px rgba(26, 35, 126, 0.12);
  --shadow-lg: 0 12px 32px rgba(26, 35, 126, 0.15);
  --shadow-xl: 0 16px 48px rgba(26, 35, 126, 0.2);
  
  /* ====== Z-Index ====== */
  --z-dropdown: 100;
  --z-sticky: 500;
  --z-fixed: 800;
  --z-modal-bg: 900;
  --z-modal: 1000;
  --z-popover: 1100;
  --z-tooltip: 1200;
  
  /* ====== Transitions ====== */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* ====== Breakpoints (for reference) ====== */
  /* Mobile: < 768px */
  /* Tablet: 768px - 1024px */
  /* Desktop: > 1024px */
  /* Custom: 1002px threshold used for nav */
}

/* Color Utility Classes (Optional) */
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--color-text-light); }

.bg-primary { background-color: var(--color-primary); }
.bg-accent { background-color: var(--color-accent); }
.bg-light { background-color: var(--color-bg-light); }
.bg-pale { background-color: var(--color-bg-pale); }

.border-light { border-color: var(--color-border); }

/* Spacing Utility Classes */
.p-base { padding: var(--spacing-base); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.gap-base { gap: var(--spacing-base); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.shadow-base { box-shadow: var(--shadow-base); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }