/* ============================================
   ETC AdBlue — Header & Navigation
   Sticky navbar, dropdowns, mobile menu overlay
   ============================================ */

/* ═══════════════════════════════════════
   HEADER
   ═══════════════════════════════════════ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: all var(--duration-slow) var(--ease-out);
  background-color: transparent;
}

/* Scrolled state */
.header.is-scrolled {
  height: var(--header-height-scrolled);
  background-color: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

/* Solid variant for inner pages with light hero */
.header--solid {
  background-color: var(--color-white);
  box-shadow: var(--shadow-xs);
}

.header--solid.is-scrolled {
  background-color: var(--glass-bg);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ── Logo ── */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
  z-index: calc(var(--z-overlay) + 1);
}

.header__logo-img {
  height: 40px;
  width: auto;
}

.header__logo-text {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-tight);
  color: var(--color-white);
  transition: var(--transition-colors);
}

.header.is-scrolled .header__logo-text {
  color: var(--color-navy);
}

.header--solid .header__logo-text {
  color: var(--color-navy);
}

/* ── Desktop Navigation ── */
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition-all);
  white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link.is-active {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
}

.header.is-scrolled .header__nav-link {
  color: var(--color-gray-700);
}

.header.is-scrolled .header__nav-link:hover,
.header.is-scrolled .header__nav-link.is-active {
  color: var(--color-primary);
  background-color: var(--color-primary-ghost);
}

.header--solid .header__nav-link {
  color: var(--color-gray-700);
}

.header--solid .header__nav-link:hover,
.header--solid .header__nav-link.is-active {
  color: var(--color-primary);
  background-color: var(--color-primary-ghost);
}

/* Dropdown arrow */
.header__nav-link .icon-chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.header__nav-item:hover .icon-chevron {
  transform: rotate(180deg);
}

/* ── Dropdown Menu ── */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-base) var(--ease-out);
  pointer-events: none;
}

.header__nav-item:hover .header__dropdown,
.header__nav-item:focus-within .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* Ortak iç sayfa header'ı: üstte tamamen saydam, kaydırmada net beyaz */
.has-shared-inner-shell .header {
  background: transparent;
  box-shadow: none;
  border-bottom-color: transparent;
}

.has-shared-inner-shell .header.is-scrolled {
  background: #fff;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: 0 8px 28px rgba(15, 35, 55, .10);
  border-bottom: 1px solid rgba(15, 35, 55, .08);
}

.header__dropdown--products {
  min-width: 310px;
}

.header__dropdown--products .header__dropdown-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__product-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.header__dropdown-link {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-gray-700);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition-all);
}

.header__dropdown-link:hover {
  background-color: var(--color-primary-lighter);
  color: var(--color-primary);
}

/* ── Header Actions (Login, Language) ── */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Language Switcher Dropdown */
.lang-dropdown {
  position: relative;
  display: inline-block;
}

.lang-dropdown__btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: rgba(255, 255, 255, 0.85);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-all);
}

.lang-dropdown__btn:hover {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}

.header.is-scrolled .lang-dropdown__btn {
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.header--solid .lang-dropdown__btn {
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.lang-dropdown__menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--space-2);
  min-width: 160px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--duration-base) var(--ease-out);
  z-index: 100;
}

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

.lang-dropdown__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-gray-700);
  text-decoration: none;
  transition: var(--transition-colors);
}

.lang-dropdown__link:hover {
  background-color: var(--color-primary-ghost);
  color: var(--color-primary);
}

.lang-dropdown__flag-img {
  width: 20px;
  height: 15px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 0 2px rgba(0,0,0,0.2);
  display: inline-block;
}

/* ── Hamburger Button ── */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: calc(var(--z-overlay) + 1);
}

.header__hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: all var(--duration-base) var(--ease-out);
  transform-origin: center;
}

.header.is-scrolled .header__hamburger-line,
.header--solid .header__hamburger-line {
  background-color: var(--color-navy);
}

/* Hamburger active state (X) */
.header__hamburger.is-active .header__hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.header__hamburger.is-active .header__hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.header__hamburger.is-active .header__hamburger-line {
  background-color: var(--color-white);
}

/* ═══════════════════════════════════════
   MOBILE MENU OVERLAY
   ═══════════════════════════════════════ */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background-color: var(--color-navy);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-slow) var(--ease-out);
}

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

.mobile-menu__close {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  right: 18px;
  z-index: 2;
  display: flex;
  width: 44px;
  height: 44px;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.mobile-menu__close:hover,
.mobile-menu__close:focus-visible {
  background: rgba(255, 255, 255, .08);
  outline: none;
}

.mobile-menu__close-line {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transform-origin: center;
  transition: all var(--duration-base) var(--ease-out);
}

.mobile-menu.is-open .mobile-menu__close-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu.is-open .mobile-menu__close-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-menu.is-open .mobile-menu__close-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

body.menu-open {
  overflow: hidden;
  overscroll-behavior: none;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-menu__item {
  margin: 0;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--duration-slow) var(--ease-out);
}

.mobile-menu.is-open .mobile-menu__item {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered animation delays */
.mobile-menu.is-open .mobile-menu__item:nth-child(1) { transition-delay: 100ms; }
.mobile-menu.is-open .mobile-menu__item:nth-child(2) { transition-delay: 150ms; }
.mobile-menu.is-open .mobile-menu__item:nth-child(3) { transition-delay: 200ms; }
.mobile-menu.is-open .mobile-menu__item:nth-child(4) { transition-delay: 250ms; }
.mobile-menu.is-open .mobile-menu__item:nth-child(5) { transition-delay: 300ms; }
.mobile-menu.is-open .mobile-menu__item:nth-child(6) { transition-delay: 350ms; }
.mobile-menu.is-open .mobile-menu__item:nth-child(7) { transition-delay: 400ms; }
.mobile-menu.is-open .mobile-menu__item:nth-child(8) { transition-delay: 450ms; }

.mobile-menu__link {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-semibold);
  color: var(--color-white);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: var(--transition-colors);
}

.mobile-menu__link:hover {
  color: var(--color-accent);
}

/* Mobile menu sub-items */
.mobile-menu__sub {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
  list-style: none;
  padding: 0;
}

.mobile-menu__item.is-expanded .mobile-menu__sub {
  display: flex;
}

.mobile-menu__sub-link {
  font-size: var(--fs-md);
  font-weight: var(--fw-regular);
  color: var(--color-gray-400);
  text-decoration: none;
  padding: var(--space-1) var(--space-4);
  transition: var(--transition-colors);
}

.mobile-menu__sub-link:hover {
  color: var(--color-accent-light);
}

/* Mobile bottom actions */
.mobile-menu__footer {
  margin-top: var(--space-10);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-4);
}

.mobile-menu__dealer {
  display: inline-flex;
  min-height: 44px;
  padding: 10px 18px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--fs-sm);
  font-weight: 700;
  text-decoration: none;
}

.mobile-menu__dealer:hover { color: #fff; background: var(--color-primary-dark); }

.mobile-menu__language .lang-dropdown__btn {
  min-height: 44px;
  color: #fff;
  border-color: rgba(255, 255, 255, .35);
}

.mobile-menu__language .lang-dropdown__menu {
  top: auto;
  right: auto;
  bottom: calc(100% + 8px);
  left: 0;
  margin-top: 0;
}

.mobile-menu__lang {
  display: flex;
  gap: var(--space-4);
}

.mobile-menu__lang a {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-gray-500);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
}

.mobile-menu__lang a.is-active {
  color: var(--color-white);
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */

@media (max-width: 1024px) {
  .header__nav {
    display: none;
  }

  .header__actions .btn {
    display: none;
  }

  .header__hamburger {
    display: flex;
  }

  .header__inner {
    padding-right: clamp(16px, 4vw, 28px);
    padding-left: clamp(16px, 4vw, 28px);
  }

  .mobile-menu {
    justify-content: flex-start;
    align-items: stretch;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: calc(var(--header-height) + 24px) 20px max(32px, env(safe-area-inset-bottom));
  }

  .mobile-menu > .mobile-menu__item:first-child {
    flex: 0 0 auto;
    margin: 0 auto 20px !important;
  }

  .mobile-menu__nav {
    width: min(100%, 560px);
    margin: 0 auto;
    align-items: stretch;
    gap: 4px;
  }

  .mobile-menu__item {
    width: 100%;
  }

  .mobile-menu__link {
    display: flex;
    width: 100%;
    min-height: 48px;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    font-size: clamp(18px, 4.8vw, 24px);
    line-height: 1.25;
    text-align: left;
  }

  .mobile-menu__link[aria-haspopup="true"]::after {
    content: '+';
    flex: 0 0 auto;
    margin-left: 16px;
    color: var(--color-orange);
    font-size: 24px;
    font-weight: 400;
    line-height: 1;
  }

  .mobile-menu__item.is-expanded > .mobile-menu__link[aria-haspopup="true"]::after {
    content: '\2212';
  }

  .mobile-menu__sub {
    width: calc(100% - 14px);
    align-items: stretch;
    gap: 0;
    margin: 0 0 6px 14px;
    padding: 4px 0 8px 8px;
    border-left: 1px solid rgba(255, 255, 255, 0.16);
    text-align: left;
  }

  .mobile-menu__sub-link {
    display: block;
    min-height: 42px;
    padding: 10px 12px;
    font-size: 15px;
    line-height: 1.4;
  }

  .mobile-menu__footer {
    width: min(100%, 560px);
    margin: auto auto 0;
    padding-top: 24px;
    padding-bottom: 8px;
  }
}

@media (max-width: 480px) {
  .mobile-menu {
    padding-right: 14px;
    padding-left: 14px;
  }

  .mobile-menu__link {
    padding-right: 10px;
    padding-left: 10px;
  }

  .mobile-menu__sub {
    width: calc(100% - 10px);
    margin-left: 10px;
    padding-left: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-menu,
  .mobile-menu__item,
  .header__hamburger-line,
  .nav-text,
  .nav-logo {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}

/* Ana sayfaya özel bayi girişi aksiyonu */
.home-dealer-login {
  min-height: 42px;
  padding: 10px 18px;
  white-space: nowrap;
}

@media (max-width: 1024px) {
  .header__actions .home-dealer-login {
    display: inline-flex;
    min-height: 38px;
    padding: 8px 12px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .header__actions {
    gap: 5px;
  }

  .header__actions .home-dealer-login {
    padding-right: 9px;
    padding-left: 9px;
    font-size: 11px;
  }
}

@media (max-width: 1024px) {
  .header__actions > .lang-dropdown,
  .header__actions .home-dealer-login {
    display: none;
  }
}

/* Animated Nav Link */
.header__nav-link--animated {
  gap: var(--space-1);
}

.nav-animated-wrapper {
  display: grid;
  align-items: center;
  justify-items: center;
}

.nav-text, .nav-logo {
  grid-area: 1 / 1 / 2 / 2;
}

.nav-text {
  animation: textFadeInOut 4s infinite;
}

.nav-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: logoFadeInOut 4s infinite;
}

.nav-logo img {
  height: 16px;
  width: auto;
  object-fit: contain;
}

.nav-logo-dark { display: block; }
.nav-logo-light { display: none; }

.header.is-scrolled .nav-logo-dark,
.header--solid .nav-logo-dark { display: none; }

.header.is-scrolled .nav-logo-light,
.header--solid .nav-logo-light { display: block; }

@keyframes textFadeInOut {
  0%, 45% { opacity: 1; transform: translateY(0); }
  50%, 95% { opacity: 0; transform: translateY(-10px); pointer-events: none; }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes logoFadeInOut {
  0%, 45% { opacity: 0; transform: translateY(10px); pointer-events: none; }
  50%, 95% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(10px); pointer-events: none; }
}

@media (max-width: 991px) {
  .nav-animated-wrapper { display: block; }
  .nav-logo { display: none; animation: none; }
  .nav-text { animation: none; opacity: 1; transform: none; grid-area: auto; }
}