/* ==========================================================================
   Header (yüzen menü), navigasyon ve footer — v2
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: 12px;
  pointer-events: none;
}

.nav-pill {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  height: 64px;
  padding: 0 10px 0 18px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  background: rgba(23, 24, 28, 0.78);
  box-shadow: var(--shadow-md), var(--edge-light);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  pointer-events: auto;
  transition: box-shadow var(--dur-base) ease, border-color var(--dur-base) ease;
}

.site-header.is-scrolled .nav-pill {
  border-color: var(--c-border-strong);
  box-shadow: var(--shadow-lg), var(--edge-light);
}

.site-nav {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.site-nav__links {
  display: flex;
  gap: 2px;
  margin-left: var(--sp-6);
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding-inline: 14px;
  border-radius: var(--r-full);
  color: var(--c-muted);
  font-size: var(--fs-sm);
  font-weight: 550;
  transition: color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}

.site-nav__link .icon {
  width: 17px;
  height: 17px;
}

.site-nav__link:hover {
  color: var(--c-text);
  background: var(--c-surface-2);
}

.site-nav__link[aria-current="page"] {
  color: var(--c-text);
  background: var(--c-surface-3);
}

.site-nav__link[aria-current="page"] .icon {
  color: var(--c-accent);
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Dil seçici */
.lang-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  background: var(--c-bg);
}

.lang-switch__item {
  display: grid;
  place-items: center;
  min-width: 36px;
  height: 28px;
  padding-inline: 8px;
  border-radius: var(--r-full);
  color: var(--c-muted);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}

.lang-switch__item:hover {
  color: var(--c-text);
}

.lang-switch__item[aria-current="true"] {
  background: var(--c-surface-3);
  color: var(--c-text);
}

/* Kullanıcı menüsü */
.user-menu {
  position: relative;
}

.user-menu__button {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  height: 44px;
  padding: 4px 12px 4px 6px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  background: var(--c-surface-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: border-color var(--dur-fast) ease;
}

.user-menu__button:hover,
.user-menu__button[aria-expanded="true"] {
  border-color: var(--c-border-strong);
}

.user-menu__button .pavatar {
  border-radius: 50%;
}

.user-menu__name {
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-menu__chevron {
  width: 16px;
  height: 16px;
  color: var(--c-muted);
  transition: transform var(--dur-base) var(--ease-out);
}

.user-menu__button[aria-expanded="true"] .user-menu__chevron {
  transform: rotate(180deg);
}

.user-menu__panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 230px;
  padding: 6px;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--r-lg);
  background: var(--c-surface);
  box-shadow: var(--shadow-lg);
  transform-origin: top right;
  animation: menu-in var(--dur-base) var(--ease-out);
}

.user-menu__item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  color: var(--c-text-dim);
  font-size: var(--fs-sm);
  text-align: left;
  transition: background-color var(--dur-fast) ease, color var(--dur-fast) ease;
}

.user-menu__item:hover {
  background: var(--c-surface-2);
  color: var(--c-text);
}

.user-menu__item .icon {
  width: 18px;
  height: 18px;
  color: var(--c-muted);
}

@keyframes menu-in {
  from { opacity: 0; transform: translateY(-6px) scale(0.97); }
}

/* Mobil menü butonu */
.nav-toggle {
  display: none;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--c-border);
  border-radius: 50%;
  background: var(--c-surface-2);
}

.nav-toggle__bars {
  position: relative;
  width: 18px;
  height: 12px;
}

.nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--c-text);
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-fast) ease, top var(--dur-base) var(--ease-out);
}

.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 5px; }
.nav-toggle__bars span:nth-child(3) { top: 10px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { top: 5px; transform: rotate(-45deg); }

@media (max-width: 920px) {
  .nav-toggle {
    display: grid;
  }

  /* backdrop-filter "fixed" konumlandırmayı bozduğu için menü pill'e göre konumlanır */
  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-5);
    max-height: calc(100dvh - 110px);
    padding: var(--sp-4);
    overflow-y: auto;
    border: 1px solid var(--c-border-strong);
    border-radius: var(--r-xl);
    background: var(--c-surface);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    transform-origin: top center;
    transition:
      opacity var(--dur-base) ease,
      transform var(--dur-base) var(--ease-out),
      visibility 0s linear var(--dur-base);
  }

  .site-header.is-open .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition-delay: 0s;
  }

  .site-nav__links {
    flex-direction: column;
    margin-left: 0;
  }

  .site-nav__link {
    height: 50px;
    border-radius: var(--r-md);
    font-size: var(--fs-md);
  }

  .site-nav__actions {
    flex-wrap: wrap;
  }

  .site-nav__actions .btn {
    flex: 1;
  }

  .user-menu {
    width: 100%;
  }

  .user-menu__button {
    width: 100%;
    border-radius: var(--r-md);
  }

  .user-menu__name {
    flex: 1;
    max-width: none;
    text-align: left;
  }

  .user-menu__panel {
    position: static;
    margin-top: var(--sp-2);
    box-shadow: none;
  }
}

/* --- Footer --- */

.site-footer {
  margin-top: var(--sp-12);
  padding-block: var(--sp-16) var(--sp-8);
  border-top: 1px solid var(--c-border);
  color: var(--c-muted);
  font-size: var(--fs-sm);
  overflow: hidden;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  gap: var(--sp-10);
}

.site-footer__brand {
  display: grid;
  align-content: start;
  gap: var(--sp-3);
  max-width: 340px;
}

.site-footer__slogan {
  color: var(--c-text);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.site-footer__heading {
  margin-bottom: var(--sp-4);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-footer__col ul {
  display: grid;
  gap: var(--sp-3);
}

.site-footer__col a {
  transition: color var(--dur-fast) ease;
}

.site-footer__col a:hover {
  color: var(--c-accent);
}

/* Dev, silik marka yazısı */
.site-footer__wordmark {
  margin-top: var(--sp-12);
  font-family: var(--font-display);
  font-size: clamp(5rem, 1rem + 19vw, 17rem);
  font-weight: 800;
  line-height: 0.8;
  letter-spacing: -0.04em;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-border);
  user-select: none;
  -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 95%);
  mask-image: linear-gradient(180deg, #000 30%, transparent 95%);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--c-border);
  font-size: var(--fs-xs);
}

@media (max-width: 860px) {
  .site-footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}