/* ==========================================================================
   NÜANS — Sayfa iskeleti
   Duyuru şeridi, üst menü (header), mobil menü, footer, mobil alt çağrı çubuğu.
   Bu dosya bütün sayfalarda ortaktır.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1) Duyuru şeridi — en üstteki koyu bant
   -------------------------------------------------------------------------- */
.topbar {
  background: var(--orange);
  color: var(--white);
  font-size: var(--fs-small);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 38px;
  padding-block: 0.3rem;
}
/* paragrafın varsayılan alt boşluğu metni yukarı kaydırıyordu */
.topbar__msg { margin: 0; font-weight: 400; color: var(--white); }
.topbar__links { display: flex; align-items: center; gap: 1.5rem; }
.topbar__links a {
  position: relative;
  display: inline-flex; align-items: center; gap: 0.4rem;
  color: var(--white);
  transition: opacity var(--t-fast);
}
/* şerit inceldi; dokunma alanı şeridin tamamına yayılıyor */
.topbar__links a::after { content: ""; position: absolute; inset: -6px -4px; }
.topbar__links a:hover { opacity: 0.78; }
.topbar__links svg { width: 16px; height: 16px; }

@media (max-width: 780px) {
  .topbar__msg { display: none; }
  .topbar__inner { justify-content: center; gap: 1.25rem; }
}

/* --------------------------------------------------------------------------
   2) Üst menü
   -------------------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--grey);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.header.is-stuck { border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 76px;
}

/* --- Logo ---
   Orijinal logo dosyası (img/logo.png) olduğu gibi kullanılıyor.
   Yüksekliği buradan ayarlayın; oran korunur. */
.logo { display: inline-flex; align-items: center; }
.logo img { height: 44px; width: auto; }

/* Alt bilgi koyu zeminli; logonun beyaz sürümü (img/logo-beyaz.png)
   doğrudan zemine konuyor, arkasına kutu gerekmiyor. */

@media (max-width: 480px) {
  .logo img { height: 38px; }
}

/* Masaüstü menü */
.nav { display: flex; align-items: center; gap: 2rem; }
.nav a {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--dark);
  padding-block: 0.5rem;
  border-bottom: 2px solid transparent;
  transition: border-color var(--t-fast), color var(--t-fast);
}
.nav a:hover { border-bottom-color: var(--dark); }
.nav a[aria-current="page"] { border-bottom-color: var(--accent); }

.header__actions { display: flex; align-items: center; gap: 0.75rem; }

/* Hamburger */
.menu-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: transparent; border: 0; cursor: pointer;
}
.menu-toggle span {
  display: block; position: relative;
  width: 22px; height: 2px; background: var(--dark); border-radius: 2px;
  transition: background var(--t-fast);
}
.menu-toggle span::before,
.menu-toggle span::after {
  content: ""; position: absolute; left: 0;
  width: 22px; height: 2px; background: var(--dark); border-radius: 2px;
  transition: transform var(--t-base), top var(--t-base);
}
.menu-toggle span::before { top: -7px; }
.menu-toggle span::after { top: 7px; }
.menu-toggle[aria-expanded="true"] span { background: transparent; }
.menu-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 980px) {
  .nav, .header__actions .btn { display: none; }
  .menu-toggle { display: inline-flex; }
}

/* Mobil menü paneli */
.mobile-menu {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(380px, 86vw);
  z-index: var(--z-menu);
  background: var(--white);
  padding: 6rem 1.75rem 2rem;
  transform: translateX(100%);
  transition: transform var(--t-base);
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}
.mobile-menu.is-open { transform: none; }

/* Kapatma düğmesi — menü paneli hamburgerin üstünü kapattığı için gerekli */
.mobile-menu__close {
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: var(--grey);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--t-fast);
}
.mobile-menu__close:hover { background: var(--grey-deep); }
.mobile-menu__close svg { width: 18px; height: 18px; }
.mobile-menu a.mobile-menu__link {
  display: block;
  padding: 1rem 0;
  font-size: 1.25rem;
  font-weight: 300;
  border-bottom: 1px solid var(--line);
}
.mobile-menu .btn { margin-top: 1.5rem; }
.mobile-menu__foot { margin-top: 2rem; font-size: var(--fs-small); color: var(--muted); }

.menu-backdrop {
  position: fixed; inset: 0; z-index: calc(var(--z-menu) - 1);
  background: rgba(31, 33, 35, 0.5);
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-base);
}
.menu-backdrop.is-open { opacity: 1; pointer-events: auto; }

body.menu-open { overflow: hidden; }

/* --------------------------------------------------------------------------
   3) Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.72);
  padding-block: clamp(3rem, 6vw, 4.5rem) 2rem;
  font-size: var(--fs-small);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--line-dark);
}
.footer h4 {
  margin-bottom: 1rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--white);
}
.footer li { margin-bottom: 0.6rem; }
.footer a:hover { color: var(--orange); }
.footer__intro { margin-top: 1.25rem; max-width: 34ch; font-weight: 300; }
.footer__bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  padding-top: 1.5rem;
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 900px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer__grid { grid-template-columns: 1fr; gap: 2rem; } }

/* --------------------------------------------------------------------------
   4) Mobil alt çağrı çubuğu — telefonda ekranın altına sabitlenir
   -------------------------------------------------------------------------- */
.callbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: var(--z-top);
  display: none;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem calc(0.6rem + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
}
.callbar .btn { flex: 1; padding-inline: 0.75rem; }

@media (max-width: 780px) {
  .callbar { display: flex; }
  body { padding-bottom: 76px; }
}