:root {
  /* ====================================
     Brand Identity Colors (مطعم الصلاة على النبي)
     ==================================== */
  --color-primary-cyan: #00b5c2;
  --color-primary-cyan-hover: #0099a4;
  --color-primary-cyan-glow: rgba(0, 181, 194, 0.25);
  
  --color-secondary-navy: #003f5c;
  --color-secondary-navy-dark: #00283b;
  --color-secondary-navy-light: #0d5475;
  
  --color-sky-blue: #87ceeb;
  --color-sky-blue-light: #e6f7ff;
  --color-sky-blue-glow: rgba(135, 206, 235, 0.3);
  
  --color-marine-ice: #dbe7ec;
  --color-marine-bg: #f4f9fc;
  
  --color-gold-amber: #f59e0b;
  --color-gold-glow: rgba(245, 158, 11, 0.25);
  
  --color-emerald-success: #10b981;
  --color-emerald-glow: rgba(16, 185, 129, 0.2);
  
  --color-coral-danger: #ef4444;
  
  --color-text-dark: #1e293b;
  --color-text-body: #334155;
  --color-text-muted: #64748b;
  --color-text-light: #f8fafc;
  --color-pure-white: #ffffff;
  --color-pure-black: #000000;

  /* ====================================
     Semantic Color Tokens
     ==================================== */
  --bg-app: var(--color-marine-bg);
  --bg-surface: var(--color-pure-white);
  --bg-surface-elevated: rgba(255, 255, 255, 0.85);
  --bg-surface-dark: var(--color-secondary-navy);
  --bg-glass-nav: rgba(230, 247, 255, 0.85);
  --bg-card: var(--color-pure-white);
  --bg-card-hover: #f0faff;
  
  --text-primary: var(--color-text-dark);
  --text-secondary: var(--color-text-muted);
  --text-inverse: var(--color-pure-white);
  --text-brand: var(--color-primary-cyan);
  --text-navy: var(--color-secondary-navy);

  --border-subtle: rgba(0, 63, 92, 0.08);
  --border-brand: var(--color-primary-cyan);
  --border-brand-soft: rgba(0, 181, 194, 0.3);
  --border-glass: rgba(255, 255, 255, 0.6);

  /* ====================================
     Typography — Fonts & Scales (Alexandria + Jakarta)
     ==================================== */
  --font-arabic-primary: 'Alexandria', 'Cairo', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-arabic-display: 'Alexandria', sans-serif;
  --font-latin-numeric: 'Plus Jakarta Sans', system-ui, sans-serif;

  --text-caption: 11px;
  --leading-caption: 1.4;
  --tracking-caption: 0;

  --text-body-sm: 13px;
  --leading-body-sm: 1.5;
  --tracking-body-sm: 0;

  --text-body: 16px;
  --leading-body: 1.6;
  --tracking-body: 0;

  --text-subheading: 20px;
  --leading-subheading: 1.3;
  --tracking-subheading: -0.01em;

  --text-heading-sm: 24px;
  --leading-heading-sm: 1.25;
  --tracking-heading-sm: -0.01em;

  --text-heading: 32px;
  --leading-heading: 1.2;
  --tracking-heading: -0.02em;

  --text-heading-lg: 42px;
  --leading-heading-lg: 1.15;
  --tracking-heading-lg: -0.02em;

  --text-display: 56px;
  --leading-display: 1.1;
  --tracking-display: -0.03em;

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

  /* ====================================
     Spacing & Density (4px base)
     ==================================== */
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-40: 40px;
  --spacing-48: 48px;
  --spacing-56: 56px;
  --spacing-64: 64px;
  --spacing-80: 80px;
  --spacing-100: 100px;
  --spacing-120: 120px;

  /* Layout Constraints */
  --page-max-width: 1280px;
  --pos-container-width: 1440px;
  --section-gap: 64px;
  --card-padding: 24px;
  --element-gap: 16px;

  /* ====================================
     Border Radius Tokens
     ==================================== */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  --radius-nav: var(--radius-xl);
  --radius-cards: var(--radius-xl);
  --radius-buttons: var(--radius-md);
  --radius-badges: var(--radius-full);
  --radius-pos-item: var(--radius-lg);

  /* ====================================
     Elevations & Shadows
     ==================================== */
  --shadow-sm: 0 2px 8px rgba(0, 63, 92, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 63, 92, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 63, 92, 0.12);
  --shadow-glow-cyan: 0 8px 30px rgba(0, 181, 194, 0.35);
  --shadow-glow-navy: 0 12px 36px rgba(0, 63, 92, 0.25);
  --shadow-card-hover: 0 14px 35px rgba(0, 181, 194, 0.22);
  --shadow-glass: 0 8px 32px 0 rgba(0, 63, 92, 0.1);

  /* ====================================
     Transitions & Timing
     ==================================== */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ====================================
     Mobile & Touch Ergonomics Tokens
     ==================================== */
  --safe-area-bottom: max(16px, env(safe-area-inset-bottom));
  --safe-area-top: max(0px, env(safe-area-inset-top));
  --touch-target-min: 44px;
}

/* ====================================
   Mobile Global Responsive & Sheet Utilities
   ==================================== */
html {
  overflow-x: clip;
  max-width: 100vw;
  -webkit-tap-highlight-color: transparent;
}

body {
  overflow-x: clip;
  max-width: 100vw;
  -webkit-tap-highlight-color: transparent;
}

/* Touch Momentum Scrolling on Category Tabs */
.touch-scroll-x {
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  overscroll-behavior-x: contain;
  touch-action: pan-x;
}

/* Bottom Sheet Keyframes */
@keyframes slideUpSheet {
  from {
    transform: translateY(100%);
    opacity: 0.8;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideDownSheet {
  from {
    transform: translateY(0);
    opacity: 1;
  }
  to {
    transform: translateY(100%);
    opacity: 0;
  }
}

@keyframes popInPill {
  0% {
    transform: translateY(100px) scale(0.9);
    opacity: 0;
  }
  70% {
    transform: translateY(-6px) scale(1.02);
    opacity: 1;
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.animate-slide-up-sheet {
  animation: slideUpSheet 0.32s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-pop-in-pill {
  animation: popInPill 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* Mobile Safe-Area Bottom Padding Helpers */
.pb-safe {
  padding-bottom: max(16px, env(safe-area-inset-bottom));
}

.bottom-safe {
  bottom: max(16px, env(safe-area-inset-bottom));
}

/* Sheet Drag Pill */
.sheet-drag-handle {
  width: 44px;
  height: 5px;
  border-radius: 9999px;
  background: rgba(148, 163, 184, 0.4);
  margin: 0 auto 12px auto;
  cursor: grab;
}