/* ==========================================================================
   Design System Variables
   Restaurant Backoffice - Minimalist Design
   Inspired by Linear.app, Notion, Stripe Dashboard
   ========================================================================== */

:root {
  /* --- Colors: Background --- */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-hover: #f1f5f9;
  --color-bg-active: #e2e8f0;

  /* --- Colors: Text --- */
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-text-inverted: #ffffff;
  --color-text-on-accent: #ffffff;

  /* --- Colors: Border --- */
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-border-focus: #4f46e5;

  /* --- Colors: Accent --- */
  --color-accent: #4f46e5;
  --color-accent-light: #eef2ff;
  --color-accent-hover: #4338ca;
  --color-accent-muted: rgba(79, 70, 229, 0.12);

  /* --- Colors: Status --- */
  --color-success: #059669;
  --color-success-light: #ecfdf5;
  --color-success-text: #065f46;
  --color-success-border: #a7f3d0;

  --color-warning: #d97706;
  --color-warning-light: #fffbeb;
  --color-warning-text: #92400e;
  --color-warning-border: #fde68a;

  --color-danger: #dc2626;
  --color-danger-light: #fef2f2;
  --color-danger-text: #991b1b;
  --color-danger-border: #fecaca;

  --color-info: #0284c7;
  --color-info-light: #f0f9ff;
  --color-info-text: #075985;
  --color-info-border: #bae6fd;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);

  /* --- Spacing (4px grid) --- */
  --space-0: 0;
  --space-0-5: 0.125rem;
  --space-1: 0.25rem;
  --space-1-5: 0.375rem;
  --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: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;

  /* --- Typography --- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

  --text-xs: 0.6875rem;
  --text-sm: 0.8125rem;
  --text-base: 0.875rem;
  --text-lg: 1rem;
  --text-xl: 1.125rem;
  --text-2xl: 1.375rem;
  --text-3xl: 1.75rem;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* --- Transitions --- */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;

  /* --- Z-index Scale --- */
  --z-base: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-60: 60;
  --z-70: 70;

  /* --- Layout --- */
  --header-height: 56px;
  --sidebar-width: 56px;
  --sidebar-expanded-width: 220px;
  --content-max-width: 1400px;

  /* --- Scrollbar --- */
  --scrollbar-width: 6px;
  --scrollbar-track: transparent;
  --scrollbar-thumb: #cbd5e1;
  --scrollbar-thumb-hover: #94a3b8;
}

/* ==========================================================================
   Dark Mode
   ========================================================================== */

[data-theme="dark"] {
  /* --- Colors: Background --- */
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-hover: #1e293b;
  --color-bg-active: #334155;

  /* --- Colors: Text --- */
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #64748b;
  --color-text-inverted: #0f172a;

  /* --- Colors: Border --- */
  --color-border: #334155;
  --color-border-light: #1e293b;
  --color-border-focus: #818cf8;

  /* --- Colors: Accent --- */
  --color-accent: #818cf8;
  --color-accent-light: rgba(99, 102, 241, 0.15);
  --color-accent-hover: #a5b4fc;
  --color-accent-muted: rgba(99, 102, 241, 0.12);

  /* --- Colors: Status --- */
  --color-success: #34d399;
  --color-success-light: rgba(52, 211, 153, 0.1);
  --color-success-text: #6ee7b7;
  --color-success-border: rgba(52, 211, 153, 0.25);

  --color-warning: #fbbf24;
  --color-warning-light: rgba(251, 191, 36, 0.1);
  --color-warning-text: #fde68a;
  --color-warning-border: rgba(251, 191, 36, 0.25);

  --color-danger: #f87171;
  --color-danger-light: rgba(248, 113, 113, 0.1);
  --color-danger-text: #fca5a5;
  --color-danger-border: rgba(248, 113, 113, 0.25);

  --color-info: #38bdf8;
  --color-info-light: rgba(56, 189, 248, 0.1);
  --color-info-text: #7dd3fc;
  --color-info-border: rgba(56, 189, 248, 0.25);

  /* --- Shadows (darker for dark mode) --- */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.4), 0 4px 8px rgba(0, 0, 0, 0.25);

  /* --- Scrollbar --- */
  --scrollbar-thumb: #475569;
  --scrollbar-thumb-hover: #64748b;
}