/* Header & Navigation Styles */
.top-bar {
  background: var(--primary-dark);
  color: #cbd5e1;
  font-size: 0.825rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.top-bar-contact {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.top-bar-contact a {
  color: #f1f5f9;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
}

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

.top-bar-badges {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-wrap: wrap;
}

.badge-naac {
  background: var(--accent);
  color: #000;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.top-bar-links-menu {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.top-bar-links-menu li {
  display: inline-flex;
  align-items: center;
}

.top-bar-links-menu li:not(:last-child)::after {
  content: "|";
  color: rgba(255, 255, 255, 0.3);
  margin-left: 0.6rem;
}

.top-bar-links-menu a {
  color: #e2e8f0;
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 500;
  transition: var(--transition);
}

.top-bar-links-menu a:hover {
  color: var(--accent);
}

.main-header {
  background: #ffffff;
  border-bottom: 3px solid var(--primary);
  box-shadow: var(--shadow-sm);
}

.header-brand-row {
  padding: 1rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  text-decoration: none;
}

.college-logo {
  height: 170px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
  transition: transform 0.2s ease-in-out;
}

.college-logo:hover {
  transform: scale(1.03);
}

.brand-text h1 {
  font-size: 1.45rem;
  color: var(--primary-dark);
  margin-bottom: 0.2rem;
  line-height: 1.25;
}

.brand-text .sub-title {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.15rem;
  display: block;
}

.brand-text .affiliation {
  font-size: 0.825rem;
  color: var(--primary-light);
  font-weight: 500;
  display: block;
  line-height: 1.4;
}

/* Navigation Bar */
.main-nav-bar {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.85rem 1rem;
  color: #ffffff;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  transition: var(--transition);
}

.nav-link:hover, .nav-item:hover > .nav-link, .nav-link.active {
  background: var(--primary-light);
  color: #ffffff;
  text-decoration: none;
}

/* Dropdown */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: #ffffff;
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--accent);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  list-style: none;
  padding: var(--spacing-xs) 0;
  display: none;
  z-index: 100;
}

.nav-item:hover > .dropdown-menu {
  display: block;
}

.dropdown-link {
  display: block;
  padding: 0.6rem 1.2rem;
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.dropdown-link:hover {
  background: var(--primary-subtle);
  color: var(--primary);
  padding-left: 1.4rem;
  text-decoration: none;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  color: #fff;
  font-size: 1.5rem;
  padding: 0.5rem;
}