/* Navigation — sticky nav, hamburger, mobile nav (T2-exclusive) */

@layer components {
  .site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    transition: box-shadow var(--transition);
  }
  .site-nav--scrolled {
    box-shadow: var(--shadow-sm);
  }
  .site-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    position: relative;
  }
  .site-nav__brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--color-text);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 400;
  }
  .site-nav__brand img {
    height: 2rem;
    width: auto;
  }
  .site-nav__links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .site-nav__link {
    display: block;
    padding: 0.5rem var(--space-sm);
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    position: relative;
    transition: color var(--transition);
  }
  .site-nav__link:hover {
    color: var(--color-primary);
  }
  .site-nav__link--active {
    color: var(--color-text);
  }
  .site-nav__link--active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: var(--space-sm);
    right: var(--space-sm);
    height: 3px;
    background: var(--color-accent);
    border-radius: 1.5px;
  }
  .site-nav__toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    border-radius: var(--radius);
  }
  .site-nav__hamburger {
    display: block;
    width: 1.25rem;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: background var(--transition);
  }
  .site-nav__hamburger::before,
  .site-nav__hamburger::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    left: 0;
    transition:
      transform var(--transition),
      top var(--transition);
  }
  .site-nav__hamburger::before {
    top: -6px;
  }
  .site-nav__hamburger::after {
    top: 6px;
  }
  .site-nav__toggle[aria-expanded="true"] .site-nav__hamburger {
    background: transparent;
  }
  .site-nav__toggle[aria-expanded="true"] .site-nav__hamburger::before {
    transform: rotate(45deg);
    top: 0;
  }
  .site-nav__toggle[aria-expanded="true"] .site-nav__hamburger::after {
    transform: rotate(-45deg);
    top: 0;
  }
  .site-nav__cta-item {
    margin-left: var(--space-xs);
  }

  /* Mobile nav (<768px) */
  @media (max-width: 767px) {
    .site-nav__toggle {
      display: flex;
    }
    .site-nav__links {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: var(--color-bg);
      flex-direction: column;
      align-items: stretch;
      max-height: 0;
      overflow: hidden;
      transition:
        max-height var(--transition),
        padding var(--transition);
      border-top: 1px solid var(--color-border);
      box-shadow: var(--shadow-md);
    }
    .site-nav__links--open {
      max-height: 25rem;
      padding: var(--space-xs) 0 var(--space-sm);
    }
    .site-nav__link {
      padding: 0.75rem var(--space-md);
    }
    .site-nav__link--active::after {
      display: none;
    }
    .site-nav__link--active {
      color: var(--color-primary);
      font-weight: 600;
    }
    .site-nav__cta-item {
      margin-left: 0;
      padding: var(--space-xs) var(--space-md) var(--space-xs);
    }
    .site-nav__cta-item .btn {
      width: 100%;
      justify-content: center;
    }
  }
}