/* === Top Bar === */
.top-bar {
  background-color: var(--color-dark);
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
  padding: var(--space-2) 0;
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-contact {
  display: flex;
  gap: var(--space-6);
}

.top-bar-contact a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}

.top-bar-contact a:hover {
  color: var(--color-white);
}

.top-bar-contact i {
  color: var(--color-accent);
  font-size: 14px;
}

.top-bar-actions {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.top-bar-actions a {
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}

.top-bar-actions a:hover {
  color: var(--color-white);
}

/* === Header === */
.site-header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: var(--z-sticky);
  transition: all var(--transition-normal);
}

.site-header.sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

/* === Logo === */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 20px;
}

.site-logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark);
  line-height: 1.2;
}

.site-logo-text span {
  color: var(--color-primary);
}

.site-logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  line-height: 1;
}

/* === Navigation === */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-list {
  display: flex;
  gap: var(--space-6);
}

.nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-gray-50);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

/* === Header CTA === */
.header-cta {
  display: flex;
  gap: var(--space-3);
}

/* === Mobile Menu === */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  transition: all var(--transition-normal);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* === Mobile Navigation === */
@media (max-width: 991px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-8) var(--space-6);
    gap: var(--space-6);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    transition: right var(--transition-normal);
    z-index: var(--z-modal);
  }

  .main-nav.open {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-gray-100);
    border-radius: 0;
  }

  .nav-link.active::after {
    display: none;
  }

  .header-cta {
    flex-direction: column;
  }

  .header-cta .btn {
    width: 100%;
  }
}

/* === Overlay for mobile menu === */
.nav-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}