/**
 * header.css
 * ─────────────────────────────────────────────────────────────────
 * Styles for the top bar (contact info strip) and main navigation.
 *
 * Structure:
 *   <header class="site-header">
 *     <div class="top-bar"> ... contact info + social icons ... </div>
 *     <div class="main-nav"> ... logo + nav links + CTA button ... </div>
 *   </header>
 *
 * DEPENDENCY: variables.css, global.css
 * ─────────────────────────────────────────────────────────────────
 */

/* ── Site Header wrapper ──────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background-color: var(--color-white);
  box-shadow: 0 2px 12px rgba(22, 22, 63, 0.08);
}

/* ── Top Bar ──────────────────────────────────────────────────── */
/**
 * The dark strip at the very top with:
 * - Left: license badge, phone, email, address
 * - Right: LinkedIn and Facebook icons
 */
.top-bar {
  background-color: var(--color-navy);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.75rem;
}

.top-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 8px;
  padding-bottom: 8px;
  flex-wrap: wrap;
}

/* Contact items row */
.top-bar__contact {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.top-bar__contact-item {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.9);
}

.top-bar__contact-item i {
  font-size: 0.8rem;
  color: var(--color-cyan);
}

.top-bar__contact-item a {
  color: rgba(255, 255, 255, 0.9);
}

.top-bar__contact-item a:hover {
  color: var(--color-cyan);
}

/* Social icons row (right side) */
.top-bar__social {
  display: flex;
  align-items: center;
  gap: 12px;
}

.top-bar__social a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  transition: color var(--transition-base);
}

.top-bar__social a:hover {
  color: var(--color-cyan);
}

/* ── Main Navigation ──────────────────────────────────────────── */
/**
 * White bar with logo, nav links, and "Contact Us" CTA button.
 */
.main-nav {
  background-color: var(--color-white);
}

.main-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 12px;
  padding-bottom: 12px;
}

/* Logo */
.main-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.main-nav__logo img {
  height: 64px;
  width: auto;
}

/* Nav links */
.main-nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.main-nav__links a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-base);
  white-space: nowrap;
}

.main-nav__links a:hover,
.main-nav__links a.active {
  color: var(--color-cyan);
}

/* Dropdown container */
.nav-dropdown {
  position: relative;
}

.nav-dropdown__toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-base);
  background: none;
  border: none;
  padding: 0;
}

.nav-dropdown__toggle:hover {
  color: var(--color-cyan);
}

.nav-dropdown__toggle i {
  font-size: 0.65rem;
  transition: transform var(--transition-base);
}

.nav-dropdown.open .nav-dropdown__toggle i {
  transform: rotate(180deg);
}

/* Dropdown menu */
.nav-dropdown__menu {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card-hover);
  min-width: 200px;
  overflow: hidden;
  z-index: 100;
}

.nav-dropdown.open .nav-dropdown__menu {
  display: block;
}

.nav-dropdown__menu a {
  display: block;
  padding: 12px 20px;
  font-size: 0.875rem;
  color: var(--color-text);
  border-bottom: 1px solid #f0f0f0;
  white-space: nowrap;
}

.nav-dropdown__menu a:last-child {
  border-bottom: none;
}

.nav-dropdown__menu a:hover {
  background-color: var(--color-light-card);
  color: var(--color-cyan);
}

/* Contact Us button */
.main-nav__cta {
  flex-shrink: 0;
}

.main-nav__cta .btn {
  font-size: 0.8rem;
  padding: 12px 24px;
  background-color: var(--color-cyan);
  color: var(--color-navy);
  border-color: var(--color-cyan);
}

.main-nav__cta .btn:hover {
  background-color: #29aff2;
}

/* ── Mobile menu toggle ───────────────────────────────────────── */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-navy);
  transition: var(--transition-base);
  border-radius: 2px;
}

/* ── Mobile Responsive ────────────────────────────────────────── */
@media (max-width: 1024px) {
  .top-bar__contact {
    gap: 12px;
  }
}

@media (max-width: 768px) {
  /* Top bar: hide address on small screens */
  .top-bar__contact-item.hide-mobile {
    display: none;
  }

  .top-bar__inner {
    flex-direction: column;
    gap: 6px;
    padding-top: 6px;
    padding-bottom: 6px;
  }

  /* Mobile nav */
  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 0;
    box-shadow: 0 8px 24px rgba(22, 22, 63, 0.12);
    z-index: 99;
  }

  .main-nav__links.open {
    display: flex;
  }

  .main-nav__links a,
  .nav-dropdown__toggle {
    padding: 12px 24px;
    width: 100%;
    border-bottom: 1px solid #f0f0f0;
  }

  .nav-dropdown__menu {
    position: static;
    transform: none;
    box-shadow: none;
    border-top: 1px solid #f0f0f0;
  }

  .nav-dropdown__menu a {
    padding-left: 40px;
  }

  .main-nav__inner {
    position: relative;
  }

  .main-nav__cta {
    display: none;
  }
}