/* FRONTEND_UPDATE_START: [Tüm Açılır Menü ve Logo yerleşim stillerinin geri yüklenmesi] */
/* 
 * Cerrahpaşa Tıp Fakültesi — Aday Öğrenci Websitesi
 * Component: Sticky Navigation Header & Mobile Menu
 */

/* ----------------------------------------------------
   4. STICKY NAVBAR
   ---------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background-color: var(--color-white);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  height: 70px;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  padding: 0 24px;
  max-width: 100%;
}

.nav-logos {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  transition: var(--transition-normal);
}

.navbar.scrolled .nav-logo {
  height: 40px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px; /* More breathing room */
  list-style: none;
}

.nav-link {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600; /* Slightly bolder for dropdown headers */
  text-transform: uppercase;
  color: var(--color-text);
  letter-spacing: 0.5px;
  padding: 10px 4px;
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after {
  width: 100%;
}

/* ----------------------------------------------------
   NAVBAR DROPDOWN MENUS
   ---------------------------------------------------- */
.nav-dropdown {
  position: relative;
  /* Visual bridge padding between header and dropdown card to prevent hover loss */
  padding-bottom: 16px;
  margin-bottom: -16px;
}

.chevron {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-right: 1.5px solid var(--color-text-muted);
  border-bottom: 1.5px solid var(--color-text-muted);
  transform: translateY(-2px) rotate(45deg);
  margin-left: 6px;
  vertical-align: middle;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.nav-dropdown:hover .chevron,
.nav-dropdown:focus-within .chevron {
  transform: translateY(0.5px) rotate(-135deg);
  border-color: var(--color-primary);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  min-width: 230px;
  background-color: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 10px 6px;
  box-shadow: 0 16px 36px rgba(139, 26, 43, 0.08), 0 4px 12px rgba(0, 0, 0, 0.02);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  z-index: 1000;
}

/* Open dropdown on hover or when tab-navigated keyboard focus is inside */
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 10px 16px;
  border-radius: 8px;
  transition: all var(--transition-fast);
  text-align: left;
  white-space: nowrap;
}

.dropdown-item:hover {
  background-color: var(--color-cream);
  color: var(--color-primary);
  transform: translateX(4px);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Lang Toggle Pill */
.lang-toggle {
  display: flex;
  background-color: var(--color-cream);
  border: 1px solid var(--color-border);
  padding: 4px;
  border-radius: 30px;
  gap: 2px;
}

.lang-btn {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 20px;
  color: var(--color-text-muted);
}

.lang-btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-nav-download {
  padding: 8px 16px;
  font-size: 0.8rem;
}

/* Mobile Nav Burger Menu */
.burger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
}

.burger-line {
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-fast);
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--navbar-height));
  background-color: var(--color-white);
  z-index: 999;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
  overflow-y: auto;
  padding: 40px 24px;
  border-top: 1px solid var(--color-border);
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.mobile-nav-link {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text);
  letter-spacing: 0.5px;
}

.mobile-nav-link:hover {
  color: var(--color-primary);
}

.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mobile-nav-actions .lang-toggle {
  align-self: flex-start;
}

/* Custom styles for university & faculty logo text */
.nav-logo-images {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 2px solid var(--color-border);
  padding-left: 12px;
}

.nav-uni-title {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.25;
}

.nav-fac-title {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.25;
}

@media (max-width: 1200px) {
  .nav-logo-text {
    display: none;
  }
}

/* FRONTEND_UPDATE_END */