:root {
      --navy-dark: #0b1329;
      --navy-card: #111c38;
      --navy-accent: #1d4ed8;
      --navy-hover: #2563eb;
      
      --bg-page: #f8fafc;
      --card-bg: #ffffff;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      
      --ice-blue: #f0f9ff;
      --ice-border: #bae6fd;
      
      --radius-lg: 16px;
      --radius-md: 10px;
    }

    * { box-sizing: border-box; }

    body {
      margin: 0;
      font-family: 'Plus Jakarta Sans', sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      padding-bottom: 60px;
    }

    /* Top Navigation */
    .navbar {
      background: var(--navy-dark);
      padding: 18px 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      position: relative;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 20px;
      color: #fff;
      text-decoration: none;
    }

    .brand-icon {
      width: 40px;
      height: 40px;
      background: var(--navy-accent);
      border-radius: var(--radius-md);
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 800;
      box-shadow: 0 4px 14px rgba(29, 78, 216, 0.4);
    }

    .nav-links {
      display: flex;
      gap: 20px;
      align-items: center;
    }

    .nav-links a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 14px;
      font-weight: 600;
      transition: color 0.2s;
    }

    .nav-links a:hover { color: #ffffff; }

    /* Mobile Menu Toggle Button */
    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #fff;
      font-size: 22px;
      padding: 4px 12px;
      border-radius: var(--radius-md);
      cursor: pointer;
      line-height: 1;
      transition: background 0.2s;
    }

    .menu-toggle:hover {
      background: rgba(255, 255, 255, 0.1);
    }

    /* Breadcrumbs */
    .breadcrumb-wrapper {
      max-width: 1100px;
      margin: 20px auto 0;
      padding: 0 20px;
    }

    .breadcrumb {
      display: flex;
      gap: 8px;
      font-size: 13px;
      color: var(--text-muted);
      align-items: center;
    }

    .breadcrumb a {
      color: var(--navy-accent);
      text-decoration: none;
      font-weight: 600;
    }

    .breadcrumb a:hover { text-decoration: underline; }

    /* Hero Header */
    .hero {
      background: linear-gradient(180deg, var(--navy-dark) 0%, #152347 100%);
      color: #fff;
      padding: 40px 20px 60px;
      text-align: center;
      margin-top: 15px;
    }

    .hero h1 {
      margin: 0 0 12px;
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 800;
    }

    .hero p {
      color: #94a3b8;
      max-width: 650px;
      margin: 0 auto;
      font-size: 15px;
    }

    /* Search & Countries Section */
    .container {
      max-width: 1100px;
      margin: -30px auto 0;
      padding: 0 20px;
    }

    .search-box {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 16px 24px;
      box-shadow: 0 10px 25px rgba(11, 19, 41, 0.06);
      border: 1px solid var(--border-color);
      margin-bottom: 35px;
    }

    .search-box input {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 15px;
      outline: none;
      transition: all 0.2s;
    }

    .search-box input:focus {
      border-color: var(--navy-accent);
      box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
    }

    .countries-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 16px;
    }

    .country-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      text-decoration: none;
      color: var(--navy-dark);
      font-weight: 700;
      transition: all 0.2s ease;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }

    .country-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(11, 19, 41, 0.08);
      border-color: var(--navy-accent);
      color: var(--navy-accent);
    }

    .country-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .country-code {
      background: var(--ice-blue);
      color: var(--navy-accent);
      font-size: 12px;
      padding: 4px 8px;
      border-radius: 6px;
      border: 1px solid var(--ice-border);
      font-weight: 800;
    }

    .arrow-icon {
      color: var(--text-muted);
      font-size: 14px;
      transition: transform 0.2s;
    }

    .country-card:hover .arrow-icon {
      transform: translateX(3px);
      color: var(--navy-accent);
    }

    /* Footer */
    footer {
      margin-top: 60px;
      text-align: center;
      color: var(--text-muted);
      font-size: 12px;
    }

    /* Mobile Responsive Rules */
    @media (max-width: 768px) {
      .navbar {
        padding: 16px 20px;
      }
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--navy-dark);
        flex-direction: column;
        padding: 16px 20px;
        gap: 14px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 0 10px 20px rgba(0,0,0,0.3);
        z-index: 1000;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 6px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      }
      .nav-links a:last-child {
        border-bottom: none;
      }
    }