/* Header and navigation styles */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(10, 25, 41, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  margin-top: 0;
}

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

.logo a {
  display: block;
  line-height: 0;
  align-self: flex-start;
}

.logo img {
  height: 40px;
  width: auto;
  object-fit: contain;
  display: block;
  max-width: 100%;
}

.main-nav ul {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.main-nav>ul>li {
  position: relative;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
  padding: .5rem 0;
  display: block;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand);
  transition: width var(--transition);
}

.main-nav a:focus,
.main-nav a:hover {
  color: var(--brand);
}

.main-nav a:focus::after,
.main-nav a:hover::after {
  width: 100%;
}

.has-dropdown {
  position: relative;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: rgba(10, 25, 41, 0.98);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: var(--spacing-xs);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  z-index: 100;
}

.has-dropdown:focus-within .dropdown,
.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li {
  margin: 0;
}

.dropdown a {
  color: #fff;
  padding: .75rem 1rem;
  border-radius: 8px;
  transition: all var(--transition);
}

.dropdown a:focus,
.dropdown a:hover {
  background: rgba(0, 188, 212, 0.2);
  color: var(--brand);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: 0 0;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-toggle span {
  width: 24px;
  height: 3px;
  background: #fff;
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-toggle:focus {
  outline: 2px solid var(--brand);
  outline-offset: 4px;
}

/* Adding mobile menu styles from mobile-footer.css */
@media (max-width: 992px) {
  .main-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: rgba(10, 25, 41, 0.98);
    backdrop-filter: blur(10px);
    padding: 80px 2rem 2rem;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow-y: auto;
  }

  .main-nav.active {
    left: 0;
  }

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

  .main-nav a {
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    margin-top: 0.5rem;
    margin-left: 1rem;
  }

  .mobile-toggle {
    display: flex;
    z-index: 1001;
  }

  .mobile-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .mobile-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .mobile-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  body.menu-open::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 998;
  }
}

/* Tweak header/logo sizing on smaller devices without changing desktop */
@media (max-width: 768px) {
  .logo img {
    height: 32px;
    /* slightly smaller for mobile */
    width: auto;
  }

  .header-inner {
    gap: 0.5rem;
  }

  .main-nav {
    width: 90%;
    max-width: 360px;
  }
}