/* ==========================================================================
   DESIGN SYSTEM & CORE STYLES
   ========================================================================== */

/* 1. Reset & Setup */
@layer reset, base, theme, layout, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }

  body {
    min-block-size: 100vh;
    text-rendering: optimizeSpeed;
    line-height: 1.6;
    overflow-x: hidden;
  }

  img, picture, svg, video {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

  input, button, textarea, select {
    font: inherit;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  ul, ol {
    list-style: none;
  }
}

/* 2. Base Configuration & Typography */
@layer base {
  :root {
    /* Fonts */
    --font-ar: 'Cairo', system-ui, -apple-system, sans-serif;
    --font-en: 'Outfit', 'Inter', system-ui, -apple-system, sans-serif;

    /* Theme Colors (Dark Theme Default) */
    --bg-dark-base: #08080a;
    --bg-dark-surface: #101014;
    --bg-dark-glass: rgba(16, 16, 20, 0.7);
    --border-dark-glass: rgba(255, 255, 255, 0.07);
    
    --text-dark-primary: #f3f4f6;
    --text-dark-secondary: #9ca3af;
    --text-dark-muted: #6b7280;

    --gold-primary: #e0a96d;
    --gold-light: #f5d6b3;
    --gold-dim: rgba(224, 169, 109, 0.1);
    --purple-accent: #8e7ab5;
    --purple-dim: rgba(142, 122, 181, 0.15);

    /* Spacing Scales */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;

    /* Borders & Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --border-width: 1px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Native UI custom scrollbars */
    --scrollbar-thumb: #33333b;
    --scrollbar-track: #08080a;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
    scrollbar-width: thin;
    
    color-scheme: dark;
    accent-color: var(--gold-primary);
  }

  body {
    background-color: var(--bg-dark-base);
    color: var(--text-dark-primary);
    font-size: 1rem;
  }

  /* Set document fonts based on language direction */
  html[lang="ar"] body {
    font-family: var(--font-ar);
  }
  
  html[lang="en"] body {
    font-family: var(--font-en);
  }

  /* Focus styling */
  *:focus-visible {
    outline: 2px solid var(--gold-primary);
    outline-offset: 4px;
  }
}

/* 3. Multi-language Display Toggle (Pure CSS multilingual mechanism) */
@layer base {
  /* Default: Hide English elements in Arabic site */
  html[lang="ar"] :lang(en) {
    display: none !important;
  }

  /* Default: Hide Arabic elements in English site */
  html[lang="en"] :lang(ar) {
    display: none !important;
  }
}

/* 4. Layout & Grid System */
@layer layout {
  .site-container {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: var(--space-sm);
  }

  .grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  @media (min-width: 768px) {
    .grid-2 {
      grid-template-columns: repeat(2, 1fr);
    }
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  section {
    padding-block: var(--space-xl);
  }
}

/* 5. Components Styling */
@layer components {
  /* Navigation Bar */
  .navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-dark-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-block-end: var(--border-width) solid var(--border-dark-glass);
  }

  .navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    block-size: 80px;
  }

  .logo {
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
  }

  .logo-symbol {
    color: var(--gold-primary);
  }

  .nav-links {
    display: none;
    gap: var(--space-md);
  }

  @media (min-width: 768px) {
    .nav-links {
      display: flex;
      align-items: center;
    }
  }

  .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark-secondary);
    transition: var(--transition-fast);
  }

  .nav-link:hover, .nav-link.active {
    color: var(--text-dark-primary);
  }

  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding-block: 0.75rem;
    padding-inline: 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
  }

  .btn-primary {
    background-color: var(--gold-primary);
    color: var(--bg-dark-base);
  }

  .btn-primary:hover {
    background-color: var(--gold-light);
    transform: translateY(-2px);
  }

  .btn-secondary {
    background-color: transparent;
    color: var(--text-dark-primary);
    border: 1px solid var(--border-dark-glass);
  }

  .btn-secondary:hover {
    background-color: var(--border-dark-glass);
    transform: translateY(-2px);
  }

  .btn-wa {
    background-color: #25d366;
    color: white;
  }

  .btn-wa:hover {
    background-color: #20ba5a;
    transform: translateY(-2px);
  }

  /* Glass Cards */
  .card-glass {
    background-color: var(--bg-dark-glass);
    border: var(--border-width) solid var(--border-dark-glass);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: var(--transition-normal);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  }

  .card-glass:hover {
    border-color: rgba(224, 169, 109, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  }

  /* Headers */
  .section-label {
    color: var(--gold-primary);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-block-end: var(--space-xs);
  }

  .section-title {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-block-end: var(--space-sm);
  }

  .section-title em {
    font-style: normal;
    color: var(--gold-primary);
  }

  .section-sub {
    color: var(--text-dark-secondary);
    font-size: 1.1rem;
    max-inline-size: 600px;
  }

  /* Footer */
  .footer {
    border-block-start: var(--border-width) solid var(--border-dark-glass);
    padding-block: var(--space-lg);
    background-color: rgba(8, 8, 10, 0.8);
  }

  .footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
  }

  @media (min-width: 768px) {
    .footer-inner {
      flex-direction: row;
      justify-content: space-between;
      text-align: start;
    }
  }

  .footer-links {
    display: flex;
    gap: var(--space-sm);
  }

  .social-icons {
    display: flex;
    gap: var(--space-sm);
  }

  .social-icon {
    font-size: 1.2rem;
    color: var(--text-dark-secondary);
    transition: var(--transition-fast);
  }

  .social-icon:hover {
    color: var(--gold-primary);
  }
}

/* 6. Utility Rules */
@layer utilities {
  .text-gold { color: var(--gold-primary); }
  .text-purple { color: var(--purple-accent); }
  .text-center { text-align: center; }
  
  .font-size-sm { font-size: 0.9rem; }
  .text-secondary { color: var(--text-dark-secondary); }

  .pill {
    display: inline-flex;
    padding-block: 0.25rem;
    padding-inline: 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--gold-dim);
    color: var(--gold-primary);
    border: 1px solid rgba(224, 169, 109, 0.2);
  }

  .pill-purple {
    background-color: var(--purple-dim);
    color: var(--purple-accent);
    border: 1px solid rgba(142, 122, 181, 0.2);
  }
  
  /* Logical properties for margins and paddings */
  .margin-is-sm { margin-inline-start: var(--space-sm); }
  .margin-ie-sm { margin-inline-end: var(--space-sm); }
  .margin-bs-md { margin-block-start: var(--space-md); }
  .margin-be-md { margin-block-end: var(--space-md); }
  
  /* Text wraps */
  .text-balance { text-wrap: balance; }
  .text-pretty { text-wrap: pretty; }
}