/* ==========================================================================
   4. Header & Navigation
   ========================================================================== */
@layer components {
  /* --------------------------------------------------------------------------
     4. Header & Navigation
     -------------------------------------------------------------------------- */
  .site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    background: #FFFFFF;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
  }

  .header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height, 84px);
  }

  .brand-logo {
    display: flex;
    align-items: center;
  }

  .site-logo-img {
    height: 56px;
    width: auto;
    object-fit: contain;
    display: block;
  }

  .footer-logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    display: block;
  }

  .main-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
  }

  .nav-link {
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #0B1B2B;
    padding: 8px 0;
    position: relative;
    transition: color var(--transition-fast);

    &::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--gold-primary);
      transition: width var(--transition-normal);
    }

    &:hover {
      color: #005B60;

      &::after {
        width: 100%;
      }
    }
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 22px;
  }

  .btn-header-register {
    background: #005B60;
    color: #FFFFFF;
    padding: 11px 26px;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    border-radius: 8px;
    transition: all var(--transition-normal);

    &:hover {
      background: #02484C;
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(0, 91, 96, 0.25);
    }
  }

  .header-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #0B1B2B;
    font-weight: 700;
    font-size: 0.92rem;
    letter-spacing: 0.01em;
    transition: color var(--transition-fast);

    &:hover {
      color: #005B60;
    }

    &:hover .phone-icon-wrap {
      border-color: #005B60;
      color: #005B60;
    }
  }

  .phone-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1.5px solid #C5A059;
    background: transparent;
    color: #C5A059;
    transition: all var(--transition-fast);
  }

  /* Mobile Toggle */
  .mobile-toggle-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 20px;
    padding: 0;

    .bar {
      width: 100%;
      height: 2.5px;
      background-color: var(--navy-dark);
      border-radius: 4px;
      transition: all var(--transition-normal);
    }
  }

  .mobile-drawer {
    display: none;
    background: #FFFFFF;
    padding: 24px;
    border-top: 1px solid var(--border-light);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);

    &.active,
    &[aria-expanded="true"] {
      display: block !important;
    }
  }

  .mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
  }

  .mobile-nav-link {
    font-size: 1rem;
    font-weight: 700;
    color: var(--navy-dark);
  }

  .mobile-drawer-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .mobile-phone-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 700;
    padding: 10px;
    color: var(--navy-dark);
  }


}