/* ---------- ÜST MENÜ ---------- */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: calc(0.875rem + env(safe-area-inset-top)) 1.25rem 0;
  pointer-events: none;
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0.625rem 0.75rem 0.625rem 1rem;
  border-radius: 1rem;                 /* kapsül yerine hafif köşeli çubuk */
  border: 1px solid transparent;
  pointer-events: auto;
  transition: max-width 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.brand,
.topbar-links a,
.brand-mark {
  transition: color 0.4s ease, background-color 0.4s ease;
}

/* Kaydırınca cam görünümlü, daha dar bir kapsüle dönüşür */
.topbar.is-scrolled .topbar-inner {
  max-width: 61.25rem;
  background: var(--glass);
  border-color: var(--glass-border);
  box-shadow: 0 0.625rem 1.875rem -0.625rem rgba(0, 0, 0, 0.5);
  -webkit-backdrop-filter: blur(1.125rem) saturate(1.3);
  backdrop-filter: blur(1.125rem) saturate(1.3);
}

/* Koyu bina videosunun üstünde logo beyaz */
.topbar .brand-mark { background: var(--text); color: var(--ink); }

/* Açık bölümlerin (data-nav="light") üstündeyken: açık cam, koyu yazı */
.topbar.on-light .topbar-inner {
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(27, 31, 39, 0.08);
  box-shadow: 0 0.625rem 1.875rem -0.75rem rgba(40, 50, 70, 0.25);
}
.topbar.on-light .brand,
.topbar.on-light .topbar-links a { color: var(--ink); }
.topbar.on-light .topbar-links a:hover { background: rgba(27, 31, 39, 0.06); }
.topbar.on-light .brand-mark { background: var(--ink); color: #fff; }

/* Logo (assets/logo.webp — kırmızı çift aslan amblemi) */
.brand-logo { display: block; width: 2.25rem; height: 2.25rem; object-fit: contain; }

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
}

.topbar-links {
  display: flex;
  gap: 0.25rem;
  margin-left: auto;
}

.topbar-links a {
  padding: 0.5625rem 0.875rem;
  border-radius: 0.625rem;
  color: var(--text);
  font-size: 0.93rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.topbar-links a:hover { background: rgba(255, 255, 255, 0.1); }

.topbar-cta {
  flex-shrink: 0;
  padding: 0.6875rem 1.25rem;
  border-radius: 0.7rem;
  background: var(--accent);
  color: #1a1206;
  font-size: 0.93rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.topbar-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0.5rem 1.375rem -0.375rem rgba(var(--accent-rgb), 0.6);
}

.topbar a:focus-visible {
  outline: 0.125rem solid var(--accent);
  outline-offset: 0.125rem;
}

/* Tablet/telefon: bağlantılar gizlenir, logo + buton kalır */
@media (max-width: 900px) {
  .topbar-links { display: none; }
  .topbar-cta { margin-left: auto; }
}

@media (max-width: 767px) {
  .topbar { padding: calc(0.625rem + env(safe-area-inset-top)) 0.75rem 0; }
  .topbar-inner { padding: 0.5rem 0.5rem 0.5rem 0.7rem; gap: 0.75rem; border-radius: 0.875rem; }
  .brand-logo { width: 2rem; height: 2rem; }
  .brand-mark { width: 2rem; height: 2rem; border-radius: 0.625rem; font-size: 1rem; }
  .brand-name { font-size: 1rem; }
  .topbar-cta { padding: 0.5625rem 0.875rem; font-size: 0.85rem; }
}