/**
 * ==============================================================================
 * Saha Enterprise Design System — Modern Design Tokens v4.0
 * Inspired by World-Class Travel & Fintech Platforms (Booking.com, Airbnb, Stripe)
 * ==============================================================================
 */

:root {
  /* ────────────────────────────────────────────────────────────────────────────
     1. COLOR TOKENS & SYSTEM PALETTE
     ──────────────────────────────────────────────────────────────────────────── */
  /* Primary Gold & Warm Amber Brand (البرتقالي الذهبي الملكي للساحة) */
  --color-primary: #ff8c00;
  --color-primary-50: #fff8eb;
  --color-primary-100: #feefc7;
  --color-primary-200: #fed78a;
  --color-primary-300: #fdbb4d;
  --color-primary-400: #fca01f;
  --color-primary-500: #ff8c00; /* Canonical Brand Gold */
  --color-primary-600: #e07000;
  --color-primary-700: #b85400;
  --color-primary-800: #934204;
  --color-primary-900: #783507;
  --color-on-primary: #ffffff;
  --color-primary-glow: rgba(255, 140, 0, 0.28);
  --color-primary-soft: rgba(255, 140, 0, 0.12);
  --color-primary-border: rgba(255, 140, 0, 0.32);

  /* Deep Royal Navy (الكحلي الملكي العميق) */
  --color-navy: #0f2942;
  --color-navy-50: #f0f5fa;
  --color-navy-100: #dce7f2;
  --color-navy-200: #bad0e4;
  --color-navy-300: #8cb2d2;
  --color-navy-400: #5c8fbd;
  --color-navy-500: #3971a5;
  --color-navy-600: #2a5888;
  --color-navy-700: #21456d;
  --color-navy-800: #1b3858;
  --color-navy-900: #0f2942; /* Canonical Royal Navy */
  --color-navy-950: #081726;
  --color-secondary: #0f2942;
  --color-on-secondary: #ffffff;
  --color-secondary-soft: rgba(15, 41, 66, 0.08);

  /* Neutral Slate Grays Scale (50 to 900) */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --gray-950: #020617;

  /* Semantic Colors (Fintech & OTA Standard) */
  --color-success: #10b981;
  --color-success-50: #ecfdf5;
  --color-success-100: #d1fae5;
  --color-success-500: #10b981;
  --color-success-600: #059669;
  --color-success-700: #047857;
  --color-success-soft: rgba(16, 185, 129, 0.12);
  --color-success-border: rgba(16, 185, 129, 0.3);

  --color-danger: #ef4444;
  --color-danger-50: #fef2f2;
  --color-danger-100: #fee2e2;
  --color-danger-500: #ef4444;
  --color-danger-600: #dc2626;
  --color-danger-700: #b91c1c;
  --color-danger-soft: rgba(239, 68, 68, 0.12);
  --color-danger-border: rgba(239, 68, 68, 0.3);

  --color-warning: #f59e0b;
  --color-warning-50: #fffbeb;
  --color-warning-100: #fef3c7;
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;
  --color-warning-700: #b45309;
  --color-warning-soft: rgba(245, 158, 11, 0.12);
  --color-warning-border: rgba(245, 158, 11, 0.3);

  --color-info: #06b6d4;
  --color-info-50: #ecfeff;
  --color-info-100: #cffafe;
  --color-info-500: #06b6d4;
  --color-info-600: #0891b2;
  --color-info-soft: rgba(6, 182, 212, 0.12);

  /* Surface & Background Layers (Light Theme Standard) */
  --surface-ground: #f8fafc;
  --surface-card: #ffffff;
  --surface-card-subtle: #fbfcfe;
  --surface-overlay: rgba(255, 255, 255, 0.94);
  --surface-border: #e2e8f0;
  --surface-border-subtle: #f1f5f9;
  --surface-border-strong: #cbd5e1;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --text-inverse: #ffffff;

  /* ────────────────────────────────────────────────────────────────────────────
     2. ELEVATION & SHADOW SYSTEM (Booking & Stripe Multi-Layered Depth)
     ──────────────────────────────────────────────────────────────────────────── */
  --box-shadow-2xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --box-shadow-xs: 0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
  --box-shadow-sm: 0 2px 5px -1px rgba(15, 23, 42, 0.08), 0 1px 3px -1px rgba(15, 23, 42, 0.05);
  --box-shadow-md: 0 6px 16px -2px rgba(15, 23, 42, 0.09), 0 2px 6px -1px rgba(15, 23, 42, 0.05);
  --box-shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.06);
  --box-shadow-xl: 0 20px 36px -6px rgba(15, 23, 42, 0.16), 0 8px 16px -3px rgba(15, 23, 42, 0.08);
  --box-shadow-2xl: 0 28px 56px -12px rgba(15, 23, 42, 0.22);
  --box-shadow-inner: inset 0 2px 4px 0 rgba(15, 23, 42, 0.05);

  /* Glassmorphism Depth & Ambient Glow */
  --glass-blur: blur(12px);
  --glass-blur-heavy: blur(20px);
  --glass-bg: rgba(255, 255, 255, 0.88);
  --glass-border: rgba(226, 232, 240, 0.85);
  --glow-gold: 0 0 24px rgba(255, 140, 0, 0.24);
  --glow-gold-lg: 0 8px 30px rgba(255, 140, 0, 0.32);

  /* ────────────────────────────────────────────────────────────────────────────
     3. SPACING SCALE (Strict 8pt Grid Hierarchy)
     ──────────────────────────────────────────────────────────────────────────── */
  --space-0: 0px;
  --space-0-5: 2px;
  --space-1: 4px;   /* 0.5 unit */
  --space-2: 8px;   /* 1.0 unit */
  --space-3: 12px;  /* 1.5 units */
  --space-4: 16px;  /* 2.0 units */
  --space-5: 20px;  /* 2.5 units */
  --space-6: 24px;  /* 3.0 units */
  --space-7: 28px;  /* 3.5 units */
  --space-8: 32px;  /* 4.0 units */
  --space-10: 40px; /* 5.0 units */
  --space-12: 48px; /* 6.0 units */
  --space-16: 64px; /* 8.0 units */
  --space-20: 80px; /* 10.0 units */
  --space-24: 96px; /* 12.0 units */

  /* ────────────────────────────────────────────────────────────────────────────
     4. TYPOGRAPHY SCALE (Modern Arabic Luxury Font Hierarchy)
     ──────────────────────────────────────────────────────────────────────────── */
  --font-family-arabic: 'Almarai', 'Cairo', 'Alexandria', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-family-numbers: 'Alexandria', 'Almarai', system-ui, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Font Sizes */
  --font-3xs: 0.625rem; /* 10px */
  --font-2xs: 0.6875rem; /* 11px */
  --font-xs: 0.75rem;    /* 12px */
  --font-sm: 0.875rem;   /* 14px */
  --font-base: 1rem;     /* 16px */
  --font-md: 1.125rem;   /* 18px */
  --font-lg: 1.25rem;    /* 20px */
  --font-xl: 1.5rem;     /* 24px */
  --font-2xl: 1.875rem;  /* 30px */
  --font-3xl: 2.25rem;   /* 36px */
  --font-4xl: 2.875rem;  /* 46px */

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Font Weights */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;
  --weight-black: 900;

  /* ────────────────────────────────────────────────────────────────────────────
     5. BORDER RADII SCALE
     ──────────────────────────────────────────────────────────────────────────── */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  /* ────────────────────────────────────────────────────────────────────────────
     6. TRANSITIONS & TIMING CURVES
     ──────────────────────────────────────────────────────────────────────────── */
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --duration-fast: 150ms;
  --duration-normal: 240ms;
  --duration-slow: 380ms;

  --transition-fast: all var(--duration-fast) var(--ease-in-out);
  --transition-base: all var(--duration-normal) var(--ease-in-out);
  --transition-smooth: all var(--duration-slow) var(--ease-out);
  --transition-transform: transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out);

  /* ────────────────────────────────────────────────────────────────────────────
     7. Z-INDEX SYSTEM
     ──────────────────────────────────────────────────────────────────────────── */
  --z-base: 1;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-bottom-nav: 1040;
  --z-drawer-backdrop: 1050;
  --z-drawer: 1060;
  --z-modal-backdrop: 1070;
  --z-modal: 1080;
  --z-toast: 1090;
  --z-tooltip: 1100;
}

/* ──────────────────────────────────────────────────────────────────────────────
   DARK THEME SEMANTIC OVERRIDES
   ────────────────────────────────────────────────────────────────────────────── */
[data-theme="dark"],
[data-bs-theme="dark"] {
  --surface-ground: #0a0f1d;
  --surface-card: #111827;
  --surface-card-subtle: #162032;
  --surface-overlay: rgba(17, 24, 39, 0.94);
  --surface-border: #1f293d;
  --surface-border-subtle: #192334;
  --surface-border-strong: #334155;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-inverse: #0f172a;

  --box-shadow-xs: 0 1px 3px 0 rgba(0, 0, 0, 0.35);
  --box-shadow-sm: 0 2px 6px -1px rgba(0, 0, 0, 0.45);
  --box-shadow-md: 0 6px 18px -2px rgba(0, 0, 0, 0.55);
  --box-shadow-lg: 0 14px 32px -4px rgba(0, 0, 0, 0.65);
  --box-shadow-xl: 0 22px 42px -6px rgba(0, 0, 0, 0.75);
  --box-shadow-2xl: 0 32px 64px -12px rgba(0, 0, 0, 0.85);

  --glass-bg: rgba(17, 24, 39, 0.92);
  --glass-border: rgba(51, 65, 85, 0.75);
  --color-secondary-soft: rgba(255, 255, 255, 0.08);
}

/* ──────────────────────────────────────────────────────────────────────────────
   UTILITY HELPER CLASSES FOR INSTANT APPLICATION
   ────────────────────────────────────────────────────────────────────────────── */
.token-shadow-sm { box-shadow: var(--box-shadow-sm) !important; }
.token-shadow-md { box-shadow: var(--box-shadow-md) !important; }
.token-shadow-lg { box-shadow: var(--box-shadow-lg) !important; }
.token-shadow-xl { box-shadow: var(--box-shadow-xl) !important; }

.token-glass {
  background: var(--glass-bg) !important;
  backdrop-filter: var(--glass-blur) !important;
  -webkit-backdrop-filter: var(--glass-blur) !important;
  border: 1px solid var(--glass-border) !important;
}

.token-badge-gold {
  background: var(--color-primary-soft) !important;
  color: var(--color-primary-700) !important;
  border: 1px solid var(--color-primary-border) !important;
  font-weight: var(--weight-bold) !important;
  border-radius: var(--radius-full) !important;
}
[data-theme="dark"] .token-badge-gold {
  color: var(--color-primary-300) !important;
}

.token-badge-success {
  background: var(--color-success-soft) !important;
  color: var(--color-success-700) !important;
  border: 1px solid var(--color-success-border) !important;
  font-weight: var(--weight-bold) !important;
  border-radius: var(--radius-full) !important;
}
[data-theme="dark"] .token-badge-success {
  color: var(--color-success-500) !important;
}

.token-badge-danger {
  background: var(--color-danger-soft) !important;
  color: var(--color-danger-700) !important;
  border: 1px solid var(--color-danger-border) !important;
  font-weight: var(--weight-bold) !important;
  border-radius: var(--radius-full) !important;
}
[data-theme="dark"] .token-badge-danger {
  color: var(--color-danger-500) !important;
}

.token-badge-warning {
  background: var(--color-warning-soft) !important;
  color: var(--color-warning-700) !important;
  border: 1px solid var(--color-warning-border) !important;
  font-weight: var(--weight-bold) !important;
  border-radius: var(--radius-full) !important;
}
[data-theme="dark"] .token-badge-warning {
  color: var(--color-warning-500) !important;
}

.token-glow-gold {
  box-shadow: var(--glow-gold) !important;
}