/* ==========================================================================
   DENTALINS — NAVBAR COMPONENT (navbar.css)
   Desktop sticky navbar + transparan→solid geçiş + dropdown + mobil menü overlay.
   BEM: .navbar, .mobile-menu
   ========================================================================== */


/* ======================================================================
   1. NAVBAR BASE
   ====================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--space-4) 0;
  transition:
    background-color var(--transition-base),
    padding var(--transition-base),
    box-shadow var(--transition-base);
}

/* Transparan başlangıç durumu (hero üstü) */
.navbar--transparent {
  background-color: transparent;
}

/* Scroll sonrası solid durumu */
.navbar--solid {
  background-color: rgba(255, 255, 255, 0.98);
  padding: var(--space-3) 0;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

body:has(.mobile-menu.is-open) header {
  visibility: hidden;
}

/* ======================================================================
   2. NAVBAR CONTAINER
   ====================================================================== */

.navbar__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}


/* ======================================================================
   3. LOGO
   ====================================================================== */

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
  z-index: 2;
}

.navbar__logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.navbar__logo:hover .navbar__logo-img {
  transform: scale(1.05);
}

.navbar__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.navbar__logo-brand {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-inverse);
  transition: color var(--transition-base);
  letter-spacing: var(--tracking-tight);
}

.navbar__logo-tagline {
  font-size: 10px;
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-base);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-top: 2px;
}

/* Solid durumda logo renkleri */
.navbar--solid .navbar__logo-brand {
  color: var(--color-secondary-500);
}

.navbar--solid .navbar__logo-tagline {
  color: var(--color-text-tertiary);
}


/* ======================================================================
   4. DESKTOP NAVIGATION
   ====================================================================== */

.navbar__nav {
  display: none;
  flex: 1;
  justify-content: center;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: 0;
}

.navbar__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.navbar__link:hover {
  color: var(--color-neutral-0);
  background-color: rgba(255, 255, 255, 0.1);
}

.navbar__link--active {
  color: var(--color-neutral-0);
}

.navbar__link--active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: var(--space-3);
  right: var(--space-3);
  height: 2px;
  background-color: var(--color-primary-400);
  border-radius: var(--radius-full);
}

/* Solid durumda link renkleri */
.navbar--solid .navbar__link {
  color: var(--color-text-secondary);
}

.navbar--solid .navbar__link:hover {
  color: var(--color-primary-500);
  background-color: var(--color-primary-50);
}

.navbar--solid .navbar__link--active {
  color: var(--color-primary-600);
}

.navbar--solid .navbar__link--active::after {
  background-color: var(--color-primary-500);
}

/* Dropdown icon */
.navbar__dropdown-icon {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}


/* ======================================================================
   5. DROPDOWN MENU — Mega-menu grid tile yapısı
   ====================================================================== */

.navbar__item--has-dropdown {
  position: relative;
}

.navbar__dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  width: 860px;
  background: #0c1a2e;
  border-radius: 6px;
  box-shadow:
    0 30px 90px rgba(0, 0, 0, 0.45),
    0 8px 30px rgba(0, 0, 0, 0.25);
  padding: 40px 48px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-expand),
    visibility var(--transition-expand),
    transform var(--transition-expand);
  z-index: var(--z-dropdown);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* Dropdown açık durumu */
.navbar__item--has-dropdown:hover .navbar__dropdown,
.navbar__item--has-dropdown.is-open .navbar__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(3px);
}

.navbar__item--has-dropdown:hover .navbar__dropdown-icon,
.navbar__item--has-dropdown.is-open .navbar__dropdown-icon {
  transform: rotate(180deg);
}

/* Mega-menu 4 sütun layout */
.navbar__dropdown-mega {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  column-gap: 40px;
}

/* Kolon */
.navbar__dropdown-col {
  display: flex;
  flex-direction: column;
}

/* Kategori başlığı — uppercase, küçük, muted */
.navbar__dropdown-heading {
  font-size: 11px;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.35);
  margin: 0 0 20px 0;
  padding: 0;
  line-height: 1;
}

/* Tedavi linki — başlık + açıklama */
.navbar__dropdown-item {
  display: block;
  text-decoration: none;
  padding: 10px 0;
  border-radius: 4px;
  transition: all var(--transition-color);
}

.navbar__dropdown-item + .navbar__dropdown-item {
  margin-top: 2px;
}

.navbar__dropdown-title {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.3;
  letter-spacing: 0.01em;
  transition: color var(--transition-color);
}

.navbar__dropdown-desc {
  display: block;
  font-size: 12.5px;
  font-weight: var(--weight-regular);
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.45;
  margin-top: 4px;
  transition: color var(--transition-color);
}

/* Hover — sadece renk değişimi, temiz ve minimal */
.navbar__dropdown-item:hover .navbar__dropdown-title {
  color: var(--color-primary-400);
}

.navbar__dropdown-item:hover .navbar__dropdown-desc {
  color: rgba(255, 255, 255, 0.55);
}

/* Hover bridge — menü ile dropdown arası boşlukta kaybolmayı engelle */
.navbar__item--has-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: -20px;
  right: -20px;
  height: 20px;
}

/* ---- Solid navbar dropdown (scrolled) — light theme ---- */
.navbar--solid .navbar__dropdown {
  background: #fff;
  border: 1px solid var(--color-neutral-200);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.10),
    0 4px 20px rgba(0, 0, 0, 0.06);
}

.navbar--solid .navbar__dropdown-heading {
  color: var(--color-secondary-400);
}

.navbar--solid .navbar__dropdown-title {
  color: var(--color-secondary-700);
}

.navbar--solid .navbar__dropdown-desc {
  color: var(--color-secondary-300);
}

.navbar--solid .navbar__dropdown-item:hover .navbar__dropdown-title {
  color: var(--color-primary-500);
}

.navbar--solid .navbar__dropdown-item:hover .navbar__dropdown-desc {
  color: var(--color-secondary-500);
}


/* ======================================================================
   6. NAVBAR ACTIONS (Desktop)
   ====================================================================== */

.navbar__actions {
  display: none;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.navbar__phone {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.navbar__phone:hover {
  color: var(--color-neutral-0);
}

.navbar__phone-icon {
  flex-shrink: 0;
}

.navbar__phone-text {
  display: none;
}

/* Solid durumda telefon rengi */
.navbar--solid .navbar__phone {
  color: var(--color-secondary-500);
}

.navbar--solid .navbar__phone:hover {
  color: var(--color-primary-500);
}

/* CTA buton — Navbar özel premium tasarım
   Transparent navbar: frosted glass outline → filled gradient on hover
   Solid navbar: filled gradient → enhanced neon glow on hover */
.navbar__cta {
  /* Layout */
  padding: 0.55rem 1.75rem;
  min-height: 40px;
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: 0.04em;

  /* Transparent navbar — Frosted glass style */
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.22);

  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 2px 8px rgba(0, 0, 0, 0.08);

  transition:
    background var(--transition-slow),
    border-color var(--transition-slow),
    box-shadow var(--transition-smooth),
    transform var(--transition-slow),
    color var(--transition-hover);
}

/* Shimmer — softer for glass */
.navbar__cta::before {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 100%
  );
}

/* Hover — border & text → cyan, bg slightly darker */
.navbar__cta:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-primary-400);
  border-color: var(--color-primary-400);
  transform: translateY(-1px);

  box-shadow:
    0 0 12px rgba(var(--btn-primary-rgb), 0.12),
    0 4px 12px rgba(0, 0, 0, 0.1);
}

.navbar__cta:active {
  transform: translateY(0);
  background: rgba(255, 255, 255, 0.01);
  box-shadow:
    0 0 6px rgba(var(--btn-primary-rgb), 0.1),
    0 2px 6px rgba(0, 0, 0, 0.08);
}

/* ---- Solid navbar (scrolled) ---- */
.navbar--solid .navbar__cta {
  background: transparent;
  color: var(--color-primary-500);
  border: 1.5px solid var(--color-primary-500);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;

  box-shadow: none;
}

.navbar--solid .navbar__cta:hover {
  background: rgba(var(--btn-primary-rgb), 0.06);
  color: var(--color-primary-400);
  border-color: var(--color-primary-400);
  transform: translateY(0);

  box-shadow:
    0 0 12px rgba(var(--btn-primary-rgb), 0.1),
    0 4px 12px rgba(0, 0, 0, 0.06);
}

.navbar--solid .navbar__cta:active {
  transform: translateY(0);
  background: rgba(var(--btn-primary-rgb), 0.1);
  box-shadow: none;
}


/* ======================================================================
   7. HAMBURGER BUTTON (Mobile)
   ====================================================================== */

.navbar__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 2;
  -webkit-tap-highlight-color: transparent;
}

.navbar__hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base),
    background-color var(--transition-base);
}

.navbar--solid .navbar__hamburger-line {
  background-color: var(--color-secondary-500);
}

/* Hamburger → X animasyonu */
.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ======================================================================
   8. MOBILE MENU OVERLAY
   ====================================================================== */

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 85vw);
  background-color: var(--color-neutral-0);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-expand);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu.is-open {
  transform: translateX(0);
}

/* Backdrop */
.mobile-menu__backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base);
}

.mobile-menu__backdrop.is-visible {
  opacity: 1;
  visibility: visible;
}

/* Header */
.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.mobile-menu__header .navbar__logo-brand {
  color: var(--color-secondary-500);
}

.mobile-menu__header .navbar__logo-tagline {
  color: var(--color-text-tertiary);
}

.mobile-menu__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-tertiary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.mobile-menu__close:hover {
  background-color: var(--color-neutral-100);
  color: var(--color-text-primary);
}

/* Nav */
.mobile-menu__nav {
  flex: 1;
  padding: var(--space-4) 0;
  overflow-y: auto;
}

.mobile-menu__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  cursor: pointer;
  text-align: left;
}

.mobile-menu__link:hover {
  background-color: var(--color-neutral-50);
  color: var(--color-primary-600);
}

.mobile-menu__link--active {
  color: var(--color-primary-600);
  background-color: var(--color-primary-50);
  border-right: 3px solid var(--color-primary-500);
}

/* Toggle icon */
.mobile-menu__toggle-icon {
  transition: transform var(--transition-base);
  flex-shrink: 0;
  color: var(--color-text-tertiary);
}

.mobile-menu__link--toggle[aria-expanded="true"] .mobile-menu__toggle-icon {
  transform: rotate(180deg);
}

/* Alt menü */
.mobile-menu__sublist {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-expand);
  background-color: var(--color-neutral-50);
}

.mobile-menu__sublist.is-open {
  max-height: 800px; /* JS açtığında yeterli max-height */
}

.mobile-menu__sublink {
  display: block;
  padding: var(--space-2) var(--space-5) var(--space-2) var(--space-8);
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.mobile-menu__sublink:hover {
  color: var(--color-primary-600);
  padding-left: calc(var(--space-8) + 4px);
}

.mobile-menu__sublink--all {
  font-weight: var(--weight-semibold);
  color: var(--color-primary-500);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-2);
}

/* Footer */
.mobile-menu__footer {
  padding: var(--space-5);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex-shrink: 0;
}

.mobile-menu__phone {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2);
  transition: color var(--transition-fast);
}

.mobile-menu__phone:hover {
  color: var(--color-primary-500);
}


/* ======================================================================
   9. BODY SCROLL LOCK
   ====================================================================== */

body.menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}


/* ======================================================================
   10. RESPONSIVE BREAKPOINTS
   ====================================================================== */

/* Tablet — telefon numarası göster */
@media (min-width: 768px) {
  .navbar__phone-text {
    display: inline;
  }
}

/* Desktop — tam navbar göster */
@media (min-width: 1024px) {
  .navbar__nav {
    display: flex;
  }

  .navbar__actions {
    display: flex;
  }

  .navbar__hamburger {
    display: none;
  }
}

/* Geniş ekran — link spacing artır */
@media (min-width: 1280px) {
  .navbar__menu {
    gap: var(--space-2);
  }

  .navbar__link {
    padding: var(--space-2) var(--space-4);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .navbar__hamburger-line {
    transition: none;
  }

  .navbar__mobile-menu {
    transition: none;
  }

  .navbar__link,
  .navbar__dropdown {
    transition: none;
  }
}