/* ========================================
   İleri Teknik Otomotiv - Header CSS
   ======================================== */

/* === TOP BAR === */
.top-bar {
  background: var(--renk-koyu);
  border-bottom: 1px solid var(--renk-gri-sinir);
  padding: 0.5rem 0;
  font-size: var(--fs-sm);
}

.top-bar .konteyner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.top-bar-sol {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-bar-sol .bilgi {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--renk-gri-acik);
}

.top-bar-sol .bilgi svg {
  width: 14px;
  height: 14px;
  fill: var(--renk-birincil);
  flex-shrink: 0;
}

.top-bar-sag {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.top-bar-sag .sosyal a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--renk-gri-orta);
  color: var(--renk-gri-acik);
  transition: var(--gecis-normal);
}

.top-bar-sag .sosyal a:hover {
  background: var(--renk-birincil);
  color: var(--renk-beyaz-tam);
  transform: translateY(-2px);
}

.top-bar-sag .sosyal a svg {
  width: 13px;
  height: 13px;
  fill: currentColor;
}

/* === ANA HEADER === */
.header {
  position: sticky;
  top: 0;
  z-index: 9990;
  background: rgba(13, 13, 13, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--gecis-normal);
}

.header.kaydirma {
  background: rgba(13, 13, 13, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.header .konteyner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 75px;
  gap: 1rem;
}

/* === LOGO === */
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-gorsel {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: var(--renk-gri-orta);
  padding: 4px;
}

.logo-metin {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-metin .ust {
  font-family: var(--font-baslik);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--renk-beyaz);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.logo-metin .alt {
  font-family: var(--font-baslik);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--renk-birincil);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* === NAVİGASYON === */
.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: rgba(245, 245, 245, 0.8);
  border-radius: var(--radius-md);
  transition: var(--gecis-normal);
  position: relative;
  letter-spacing: 0.3px;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--renk-birincil);
  border-radius: var(--radius-tam);
  transition: width 0.3s ease;
}

.nav a:hover,
.nav a.aktif {
  color: var(--renk-beyaz-tam);
  background: rgba(255,255,255,0.05);
}

.nav a:hover::after,
.nav a.aktif::after {
  width: 60%;
}

/* === HEADER SAĞ BÖLÜM === */
.header-sag {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.header-telefon {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(230,57,70,0.1);
  border: 1px solid rgba(230,57,70,0.2);
  border-radius: var(--radius-md);
  color: var(--renk-birincil);
  font-weight: 600;
  font-size: var(--fs-sm);
  transition: var(--gecis-normal);
  white-space: nowrap;
}

.header-telefon:hover {
  background: var(--renk-birincil);
  color: var(--renk-beyaz-tam);
  border-color: var(--renk-birincil);
  transform: translateY(-1px);
}

.header-telefon svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}

.header-whatsapp {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(37,211,102,0.1);
  border: 1px solid rgba(37,211,102,0.2);
  border-radius: var(--radius-md);
  color: var(--renk-yesil);
  font-weight: 600;
  font-size: var(--fs-sm);
  transition: var(--gecis-normal);
  white-space: nowrap;
}

.header-whatsapp:hover {
  background: var(--renk-yesil);
  color: var(--renk-beyaz-tam);
  border-color: var(--renk-yesil);
  transform: translateY(-1px);
}

.header-whatsapp svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}

/* === HAMBURGEr MENÜ === */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  cursor: pointer;
  transition: var(--gecis-normal);
  gap: 5px;
  flex-shrink: 0;
}

.hamburger:hover {
  background: rgba(230,57,70,0.15);
  border-color: rgba(230,57,70,0.3);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--renk-beyaz);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

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

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

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

/* === MOBİL MENÜ === */
.mobil-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(13, 13, 13, 0.98);
  backdrop-filter: blur(20px);
  z-index: 9989;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobil-menu.aktif {
  opacity: 1;
  pointer-events: all;
}

.mobil-menu a {
  font-family: var(--font-baslik);
  font-size: 2rem;
  font-weight: 600;
  color: rgba(245,245,245,0.8);
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: var(--gecis-normal);
  padding: 0.5rem 2rem;
  position: relative;
}

.mobil-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--renk-birincil);
  transition: width 0.3s ease;
}

.mobil-menu a:hover {
  color: var(--renk-beyaz-tam);
}

.mobil-menu a:hover::after {
  width: 80%;
}

.mobil-menu .mobil-iletisim {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.mobil-menu .mobil-iletisim a.btn {
  min-width: 220px;
  justify-content: center;
}

/* === RESPONSIVE === */
@media (max-width: 1100px) {
  .header-whatsapp .btn-text { display: none; }
  .header-telefon .btn-text { display: none; }
}

@media (max-width: 900px) {
  .nav { display: none; }
  .hamburger { display: flex; }
  .header-telefon,
  .header-whatsapp { display: none; }
}

@media (max-width: 768px) {
  .top-bar { display: none; }
  .header .konteyner { height: 65px; }
  .logo-metin .ust { font-size: 0.95rem; }
  .logo-metin .alt { font-size: 0.7rem; }
}

@media (max-width: 400px) {
  .mobil-menu a {
    font-size: 1.5rem;
    padding: 0.4rem 1rem;
  }
}