/**
 * Ortak navigasyon stilleri - tüm sayfalar
 * Ürünler sayfası referans alınarak tutarlı düzen
 */

/* Header tam genişlik — menü kesilmesin, sayfa ortalaması nav içinde */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  margin: 0;
  padding: 0;
  padding-top: env(safe-area-inset-top, 0px);
  z-index: 1000;
  background: var(--header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
  box-sizing: border-box;
  overflow: visible;
}

.header.sticky-only {
  position: sticky;
}

/* Nav tam genişlik — Giriş / Ürünler sağda hep görünsün */
.nav {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) auto minmax(80px, 1fr);
  align-items: center;
  width: 100%;
  max-width: 100%;
  padding: var(--space-4) max(var(--space-6), env(safe-area-inset-right, 0px)) var(--space-4) max(var(--space-6), env(safe-area-inset-left, 0px));
  gap: var(--space-4);
  box-sizing: border-box;
  overflow: visible;
}

/* Sol: logo + hamburger (mobilde), logo önde */
.nav-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  justify-self: start;
  position: relative;
  z-index: 2;
}

/* Tüm sayfalarda logo büyük, menüyle çakışmasın (z-index), hafif sola */
.nav-logo {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  flex-shrink: 0;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  margin-left: 4px;
  position: relative;
  z-index: 3;
}

.nav-logo-img {
  height: 76px;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.active .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Orta sütun: menü linkleri + CTA — üst barda ortada, logo altında kalsın */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: nowrap;
  justify-self: center;
  position: relative;
  z-index: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-1);
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
  background: var(--color-accent-muted);
}

/* Acil Destek — üst menüde kırmızı, dikkat çeksin */
.nav-links a.nav-link-acil {
  color: #dc2626;
  font-weight: var(--font-semibold);
}

.nav-links a.nav-link-acil:hover,
.nav-links a.nav-link-acil.active {
  color: #b91c1b;
  background: rgba(220, 38, 38, 0.12);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav-cta .btn {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.accent { color: var(--color-accent); }

.lang-select {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  cursor: pointer;
}

[dir="rtl"] .nav { direction: rtl; }
[dir="rtl"] .nav-left { justify-self: end; }
[dir="rtl"] .nav-links { flex-direction: row-reverse; }

/* Mobil menü - 1024px'te hamburger (çok linkli sayfalar için) */
@media (max-width: 1024px) {
  .nav {
    display: flex;
    justify-content: space-between;
  }
  /* index.html dışındaki sayfalar: logo + toggle aynı satırda (nav-left yok) */
  .nav:not(:has(.nav-left)) {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: var(--space-4);
  }
  .nav:not(:has(.nav-left)) > .nav-menu {
    grid-column: 1 / -1;
  }
  .nav-left {
    width: 100%;
    justify-content: space-between;
  }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: var(--nav-mobile-offset);
    left: 0;
    right: 0;
    bottom: auto;
    flex-direction: column;
    align-items: stretch;
    background: var(--header-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-6) max(var(--space-6), env(safe-area-inset-right, 0px)) var(--space-8) max(var(--space-6), env(safe-area-inset-left, 0px));
    padding-bottom: max(var(--space-8), env(safe-area-inset-bottom, 0px));
    gap: var(--space-6);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0.2s;
  }
  .nav-menu.open {
    max-height: min(calc(100dvh - var(--nav-mobile-offset)), calc(100vh - var(--nav-mobile-offset)));
    opacity: 1;
    visibility: visible;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links {
    flex-direction: column;
    gap: 0;
    padding: 0;
  }
  .nav-links li {
    border-bottom: 1px solid var(--color-border);
  }
  .nav-links a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-lg);
  }
  .lang-select {
    min-height: var(--touch-target-min, 44px);
    padding: var(--space-2) var(--space-4);
    font-size: max(1rem, var(--text-sm));
    width: 100%;
    max-width: 100%;
  }
  .nav-cta {
    flex-direction: column;
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
  }
  .nav-cta .btn { width: 100%; justify-content: center; }
  .nav-cta > a:not(.btn) {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    width: 100%;
    box-sizing: border-box;
  }
}

@media (max-width: 480px) {
  :root {
    --header-bar-height: 76px;
    --nav-mobile-offset: calc(var(--header-bar-height) + env(safe-area-inset-top, 0px));
  }
  .nav { padding: var(--space-3) max(var(--space-4), env(safe-area-inset-right, 0px)) var(--space-3) max(var(--space-4), env(safe-area-inset-left, 0px)); }
  .nav-logo-img { height: 52px; }
  .nav-logo { margin-left: 4px; }
}