/* ============================================================
   Op. Dr. Ramazan Güler — Navigation
   ============================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  min-height: var(--nav-height);
  max-height: var(--nav-height);
  overflow: visible;
  z-index: var(--z-sticky);
  background: var(--color-bg-dark);          /* koyu navy */
  box-shadow: 0 1px 0 rgba(0,0,0,.25), 0 4px 16px rgba(0,0,0,.18);
  transition: box-shadow var(--transition-base);
}
/* Scroll edilince hafif daha koyu */
.nav--scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,.35);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--sp-4);
}

/* ── Logo */
.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 1;
  transition: opacity var(--transition-base);
  background: transparent;
}
.nav__logo:hover { opacity: .88; }
.nav__logo-img {
  height: 52px;
  width: auto;
  max-width: min(220px, 46vw);
  object-fit: contain;
  display: block;
  background: transparent;
}

/* Sidebar logo */
.nav__sidebar-logo { display: flex; align-items: center; }
.nav__sidebar-logo-img {
  height: 42px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  display: block;
  background: transparent;
}

/* Bayrak görselleri */
.flag-img {
  display: inline-block;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0,0,0,.12);
  vertical-align: middle;
  object-fit: cover;
  flex-shrink: 0;
}

/* ── Desktop Menu */
.nav__menu {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav__link {
  position: relative;
  padding: 8px 9px;
  font-size: .9375rem;
  font-weight: var(--fw-semibold);
  color: rgba(255,255,255,.88);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 9px; right: 9px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}
.nav__link:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav__link:hover::after,
.nav__link.active::after { transform: scaleX(1); }
.nav__link.active { color: #fff; }

/* ── Right Side */
.nav__right {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

/* ── Lang Dropdown */
.lang-dropdown {
  position: relative;
}
.lang-dropdown__trigger {
  display: flex;
  align-items: center;
  gap: .35rem;
  padding: 5px 10px 5px 8px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.85);
  font-size: .85rem;
  font-weight: var(--fw-semibold);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
  line-height: 1;
}
.lang-dropdown__trigger:hover {
  background: rgba(255,255,255,.18);
  border-color: rgba(255,255,255,.3);
  color: #fff;
}
.lang-dropdown__flag { display: flex; align-items: center; flex-shrink: 0; }
.lang-dropdown__code { letter-spacing: .05em; text-transform: uppercase; font-size: .78rem; }
.lang-dropdown__chevron {
  transition: transform var(--transition-fast);
  opacity: .6;
  flex-shrink: 0;
}
.lang-dropdown.open .lang-dropdown__chevron { transform: rotate(180deg); }

.lang-dropdown__menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  padding: 5px;
  z-index: calc(var(--z-top) + 20);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(.97);
  transform-origin: top right;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  list-style: none;
}
.lang-dropdown.open .lang-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.lang-dropdown__item {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  transition: var(--transition-fast);
  text-decoration: none;
}
.lang-dropdown__item .lang-dropdown__flag { display: flex; align-items: center; }
.lang-dropdown__item:hover {
  background: var(--color-primary-alpha);
  color: var(--color-primary);
}
.lang-dropdown__item--active {
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
}
.lang-dropdown__name { flex: 1; }
.lang-dropdown__check { color: var(--color-primary); flex-shrink: 0; }

/* ── Mobile Sidebar Lang (kapalı başlar) */
.lang-sidebar {
  position: relative;
  z-index: 3;
  margin-bottom: 2px;
}
.lang-sidebar__toggle {
  display: flex;
  align-items: center;
  gap: .75rem;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  background: var(--color-bg-alt);
  cursor: pointer;
  list-style: none;
}
.lang-sidebar__toggle::-webkit-details-marker { display: none; }
.lang-sidebar__toggle::marker { content: ''; }
.lang-sidebar__toggle-flag { display: flex; align-items: center; }
.lang-sidebar__chevron {
  margin-left: auto;
  color: var(--color-text-muted);
  transition: transform .2s ease;
}
.lang-sidebar[open] .lang-sidebar__chevron { transform: rotate(180deg); }
.lang-sidebar-list {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 6px);
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: 0 12px 36px rgba(12, 31, 63, .18);
  max-height: min(52vh, 280px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.lang-sidebar-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}
.lang-sidebar-item:hover {
  background: var(--color-primary-alpha);
  color: var(--color-primary);
}
.lang-sidebar-item--active {
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
}
.lang-sidebar-item svg { margin-left: auto; color: var(--color-primary); }

/* ── Nav CTA */
.nav__cta {
  min-width: 0;
}

/* ── Hamburger */
.nav__hamburger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.85);
  transition: var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}
.nav__hamburger:hover { background: rgba(255,255,255,.1); color: #fff; }
.nav__hamburger:active { transform: scale(.9); }

.hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}
.hamburger-icon span {
  display: block;
  height: 2px;
  background: currentColor;
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}
.hamburger-icon span:nth-child(2) { width: 75%; }
.nav__hamburger.open .hamburger-icon span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open .hamburger-icon span:nth-child(2) { opacity: 0; transform: translateX(-8px); }
.nav__hamburger.open .hamburger-icon span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile Sidebar */
.nav__sidebar {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100dvh;
  height: 100svh;
  max-height: 100dvh;
  background: var(--color-white);
  z-index: calc(var(--z-top) + 10);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding-bottom: env(safe-area-inset-bottom);
}
.nav__sidebar.open { transform: translateX(0); }
body.nav-open {
  overflow: hidden;
}
body.nav-open .mobile-bottom-bar,
body.nav-open .wa-float { visibility: hidden; }

.nav__sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .7rem 1.15rem;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.nav__sidebar-close {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: var(--transition-fast);
}
.nav__sidebar-close:hover { background: var(--color-bg-alt); color: var(--color-text); }

.nav__sidebar-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.nav__sidebar-menu {
  padding: .7rem 1.05rem .35rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav__sidebar-legal {
  margin-top: .35rem;
  padding: .9rem 1.3rem 1.1rem;
  border-top: 1px solid var(--color-border);
}
.nav__sidebar-legal-title {
  display: block;
  margin-bottom: .45rem;
  font-size: .68rem;
  font-weight: var(--fw-bold);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-text-light);
}
.nav__sidebar-legal-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav__sidebar-legal-link {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .42rem 0;
  font-size: .88rem;
  font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  line-height: 1.35;
}
.nav__sidebar-legal-link::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--color-accent);
  transform: rotate(45deg);
  flex-shrink: 0;
}
.nav__sidebar-legal-link:hover {
  color: var(--color-primary);
}
.nav__sidebar-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .48rem .55rem;
  border-radius: 12px;
  font-size: 1.02rem;
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  transition: var(--transition-fast);
}
.nav__sidebar-link-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(201, 168, 76, .12);
  border: 1px solid rgba(201, 168, 76, .32);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition-fast);
}
.nav__sidebar-link-icon svg {
  width: 16px;
  height: 16px;
  display: block;
  stroke: currentColor;
  fill: none;
}
.nav__sidebar-link-text { flex: 1; min-width: 0; line-height: 1.25; }
.nav__sidebar-link-chevron {
  flex-shrink: 0;
  color: var(--color-accent);
  opacity: .45;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav__sidebar-link:hover,
.nav__sidebar-link.active {
  background: rgba(201, 168, 76, .1);
  color: var(--color-text);
}
.nav__sidebar-link:hover .nav__sidebar-link-icon,
.nav__sidebar-link.active .nav__sidebar-link-icon {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.nav__sidebar-link:hover .nav__sidebar-link-chevron,
.nav__sidebar-link.active .nav__sidebar-link-chevron {
  opacity: 1;
  transform: translateX(2px);
}

.nav__sidebar-footer {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  padding: .75rem 1.15rem calc(1rem + var(--safe-bottom, 0px));
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: .45rem;
  overflow: visible;
}
.nav__sidebar-footer .btn {
  min-width: 0;
  padding: 12px 18px;
}
/* ── Overlay */
.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}
.nav__overlay.show { opacity: 1; visibility: visible; }