/* ============================================================
   SANIFOAM - Header & Navigasyon CSS
   ============================================================ */

/* ---- Üst Bar ---- */
.topbar {
  background: var(--color-dark);
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  position: relative;
  z-index: calc(var(--z-sticky) + 1);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-fast);
}

.topbar-item:hover {
  color: var(--color-secondary);
}

.topbar-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.topbar-divider {
  width: 1px;
  height: 16px;
  background: rgba(255,255,255,0.15);
}

.topbar-social {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.topbar-social a {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.6);
  transition: all var(--transition-fast);
}

.topbar-social a:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ---- Ana Header ---- */
.header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: var(--color-white);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-height);
  gap: 2rem;
}

/* ---- Logo ---- */
.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header-logo img {
  height: 48px;
  width: auto;
  transition: transform var(--transition-base);
}

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

/* ---- Ana Navigasyon ---- */
.header-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.6rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-700);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  font-family: var(--font-heading);
  letter-spacing: 0.01em;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(11, 143, 201, 0.06);
}

.nav-link svg.chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link svg.chevron,
.nav-item.open .nav-link svg.chevron {
  transform: rotate(180deg);
}

/* ---- Mega Menü ---- */
.mega-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  border: 1px solid var(--color-gray-100);
  min-width: 700px;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  overflow: hidden;
}

/* Menü açıldığında hover alanını genişlet */
.nav-item::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 15px;
  pointer-events: all;
}

.mega-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: var(--color-white);
  border-left: 1px solid var(--color-gray-100);
  border-top: 1px solid var(--color-gray-100);
  transform: translateX(-50%) rotate(45deg);
}

.nav-item:hover .mega-menu,
.nav-item.open .mega-menu {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: all;
}

/* Basit dropdown */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 0;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  border: 1px solid var(--color-gray-100);
  min-width: 220px;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  overflow: hidden;
  transform: translateY(-10px);
}

.nav-item:hover .dropdown-menu,
.nav-item.open .dropdown-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--color-gray-100);
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover {
  background: rgba(11, 143, 201, 0.04);
  color: var(--color-primary);
  padding-left: 1.5rem;
}

.dropdown-item-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11, 143, 201, 0.08);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.dropdown-item:hover .dropdown-item-icon {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Mega Menü İç Yapı */
.mega-menu-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
}

.mega-menu-col {
  padding: 1.5rem;
  border-right: 1px solid var(--color-gray-100);
}

.mega-menu-col:last-child {
  border-right: none;
}

.mega-menu-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-gray-100);
}

.mega-menu-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.6rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin-bottom: 0.25rem;
}

.mega-menu-link:hover {
  background: rgba(11, 143, 201, 0.06);
  color: var(--color-primary);
  padding-left: 1rem;
}

.mega-menu-link svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.mega-menu-featured {
  background: var(--gradient-dark);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  min-height: 200px;
}

.mega-menu-featured::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/pattern-dots.svg') repeat;
  opacity: 0.05;
}

.mega-menu-featured-content {
  position: relative;
  z-index: 1;
}

.mega-menu-featured h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.mega-menu-featured p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* ---- Header Sağ Aksiyonlar ---- */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.header-action-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-gray-600);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.header-action-btn:hover {
  background: var(--color-gray-100);
  color: var(--color-primary);
}

/* ---- Mobil Menü Butonu ---- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  padding: 8px;
}

.hamburger:hover {
  background: var(--color-gray-100);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-gray-700);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobil Menü ---- */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(380px, 90vw);
  height: 100vh;
  background: var(--color-white);
  z-index: var(--z-modal);
  box-shadow: -10px 0 40px rgba(0,0,0,0.15);
  transition: right var(--transition-slow);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-menu-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-gray-100);
  background: var(--color-dark);
}

.mobile-menu-header img {
  height: 40px;
}

.mobile-menu-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1);
  color: var(--color-white);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.mobile-menu-close:hover {
  background: rgba(255,255,255,0.2);
}

.mobile-nav {
  flex: 1;
  padding: 1rem 0;
}

.mobile-nav-item {
  border-bottom: 1px solid var(--color-gray-100);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-gray-800);
  font-family: var(--font-heading);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--color-primary);
  background: rgba(11, 143, 201, 0.04);
}

.mobile-nav-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.mobile-nav-item.open .mobile-nav-link svg {
  transform: rotate(180deg);
}

.mobile-submenu {
  display: none;
  background: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-100);
}

.mobile-nav-item.open .mobile-submenu {
  display: block;
}

.mobile-submenu-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-600);
  transition: all var(--transition-fast);
}

.mobile-submenu-link:hover {
  color: var(--color-primary);
  padding-left: 2.5rem;
}

.mobile-menu-footer {
  padding: 1.5rem;
  background: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-100);
}

.mobile-contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  font-size: 0.875rem;
  color: var(--color-gray-700);
}

.mobile-contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ---- Responsive Header ---- */
@media (max-width: 1100px) {
  .header-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .topbar {
    display: none;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 65px;
  }

  .header-logo img {
    height: 40px;
  }
}