.header {
  position: sticky;
  top: 0;
  z-index: 100;
  isolation: isolate;
  padding-top: env(safe-area-inset-top, 0px);
  background: transparent;
  border-bottom: none;
  box-shadow: none;
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding-top: 14px;
  padding-bottom: 14px;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 36px;
  width: auto;
  display: block;
}

@media (min-width: 901px) {
  .header-inner > .nav {
    flex: 1 1 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
  }

  
  .header-nav-cluster {
    flex: 1 1 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    min-width: 0;
  }

  .header-nav-cluster .nav {
    flex: 0 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
  }
}

.header-nav-login {
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  white-space: nowrap;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  transition:
    opacity 0.22s ease,
    transform 0.22s ease,
    visibility 0.22s ease;
}

@media (min-width: 901px) {
  
  body.page-home .header {
    transition: background 0.28s ease;
  }

  body.page-home .header.is-scrolled {
    
    top: calc(
      max(0.65rem, calc(env(safe-area-inset-top, 0px) + 6px)) + var(--header-capsule-drift, 0px)
    );
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
  }

  body.page-home .header.is-scrolled .header-inner {
    justify-content: center;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  body.page-home .header.is-scrolled .logo {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  body.page-home .header.is-scrolled .header-actions {
    display: none;
  }

  body.page-home .header.is-scrolled .header-nav-login {
    display: inline-flex;
    margin-left: 0.15rem;
    padding: 0.55rem 1.2rem;
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: rgba(249, 250, 251, 0.95);
    box-shadow: none;
  }

  body.page-home .header.is-scrolled .header-nav-login:hover {
    background: #ffffff;
    border-color: rgba(15, 23, 42, 0.14);
  }

  
  body.page-home .header.is-scrolled .header-nav-cluster {
    flex: 0 1 auto;
    justify-content: center;
    align-items: center;
    gap: 0.2rem;
    padding: 5px 6px 5px 12px;
    background: #ffffff;
    border-radius: 9999px;
    box-shadow:
      0 4px 6px -1px rgba(15, 23, 42, 0.06),
      0 12px 32px -8px rgba(15, 23, 42, 0.12);
    transition:
      box-shadow 0.32s ease,
      transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
  }

  body.page-home .header.is-scrolled .nav-pill {
    background: transparent;
    box-shadow: none;
    padding: 0.35rem 0.65rem 0.35rem 0.35rem;
  }
}

.nav-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.15rem 1rem;
  padding: 0.5rem 1.5rem;
  background: #ffffff;
  border-radius: 9999px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.07);
}

@media (min-width: 1100px) {
  .nav-pill {
    gap: 0.2rem 1.35rem;
    padding: 0.55rem 2rem;
  }
}

.nav-pill a {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--color-text);
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-pill a:hover {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.08);
}

.nav-pill a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.header-actions .btn {
  border-radius: 9999px;
  padding: 0.625rem 1.35rem;
  font-size: 1rem;
  font-weight: 600;
}

.header-nav-login.btn {
  border-radius: 9999px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.65);
  color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.2s, color 0.2s;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.nav-toggle:hover {
  background: #ffffff;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav-toggle-bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 22px;
}

.nav-toggle-bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) {
  transform: translateY(7px) 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) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile-panel[hidden] {
  display: none !important;
}

.nav-mobile {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  max-width: 1120px;
  margin: 0 auto;
}

.nav-mobile a,
.nav-mobile a.nav-mobile__link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  font-weight: 500;
  font-family: var(--font-sans);
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}

.nav-mobile a:hover,
.nav-mobile a:focus-visible,
.nav-mobile a.nav-mobile__link:hover,
.nav-mobile a.nav-mobile__link:focus-visible {
  background: #f1f5f9;
  color: var(--color-primary);
}

@media (max-width: 900px) {
  body.nav-drawer-open {
    overflow: hidden;
    touch-action: none;
  }

  body.nav-drawer-open .header {
    z-index: 150000;
    overflow: visible;
    /* backdrop-filter fixed konumlu çocukların containing block'unu header yapar; menü tam ekran için kapat */
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    isolation: auto;
  }

  .nav-mobile-panel:not([hidden]) {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    max-width: none;
    min-height: 100vh;
    min-height: 100dvh;
    z-index: 150001;
    box-sizing: border-box;
    /* Üst/sağ/sol: .header + .header-inner ile aynı — menü tuşu ile X aynı hizada */
    padding: calc(env(safe-area-inset-top, 0px) + 14px) max(6px, env(safe-area-inset-right, 0px)) max(12px, env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
    background: #ffffff;
    overflow: hidden;
  }

  .nav-mobile-panel__sheet {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    width: 100%;
    max-width: none;
    margin: 0;
  }

  .nav-mobile-panel__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-shrink: 0;
    padding-bottom: 0.35rem;
  }

  .nav-mobile-panel__brand {
    display: flex;
    align-items: center;
    line-height: 0;
  }

  .nav-mobile-panel__logo {
    height: 34px;
    width: auto;
    max-width: min(180px, 52vw);
    object-fit: contain;
  }

  .nav-mobile-panel__close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: var(--radius);
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.65);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
  }

  .nav-mobile-panel__close:hover {
    background: #ffffff;
    color: #000;
  }

  .nav-mobile-panel__close:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }

  .nav-mobile-panel__close-icon {
    display: block;
    flex-shrink: 0;
  }

  .nav-mobile-panel__scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding: 0.5rem 0 max(1rem, env(safe-area-inset-bottom, 0px));
    display: flex;
    flex-direction: column;
  }

  .nav-mobile-panel:not([hidden]) .nav-mobile {
    max-width: none;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
  }

  .nav-mobile-panel:not([hidden]) .nav-mobile__link {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0;
    min-height: 52px;
    padding: 0.65rem 0;
    margin: 0;
    border-radius: 0;
    border-bottom: none;
    font-size: 1.125rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: #111827;
    text-decoration: none;
  }

  .nav-mobile-panel:not([hidden]) .nav-mobile__link:hover,
  .nav-mobile-panel:not([hidden]) .nav-mobile__link:focus-visible {
    background: transparent;
    color: #000;
  }

  .nav-mobile-panel:not([hidden]) .nav-mobile__link[aria-current="page"] {
    color: var(--color-primary);
    font-weight: 600;
  }

  .nav-mobile-panel__ctas {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.35rem;
    padding-top: 1rem;
  }

  .nav-mobile-panel__foot-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: 10px;
    text-decoration: none;
    transition: background 0.15s ease, border-color 0.15s ease, filter 0.15s ease, color 0.15s ease;
  }

  .nav-mobile-panel__foot-btn--ghost {
    color: #111827;
    background: #fff;
    border: 1px solid #e5e7eb;
  }

  .nav-mobile-panel__foot-btn--ghost:hover {
    background: #f9fafb;
    border-color: #d1d5db;
  }

  .nav-mobile-panel__foot-btn--primary {
    color: #fff;
    border: none;
    background: var(--color-primary);
    box-shadow: 0 10px 28px -12px rgba(79, 70, 229, 0.55);
  }

  .nav-mobile-panel__foot-btn--primary:hover {
    background: var(--color-primary-hover);
    filter: none;
  }

  .nav-mobile-panel__notch {
    display: block;
    width: 36px;
    height: 4px;
    flex-shrink: 0;
    margin: 1.25rem auto 0;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: #e5e7eb;
    box-shadow: 0 6px 0 #e5e7eb;
  }

  .header {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-inner {
    flex-wrap: nowrap;
    padding-left: max(12px, env(safe-area-inset-left, 0px));
    padding-right: max(6px, env(safe-area-inset-right, 0px));
    gap: 0.35rem;
    justify-content: flex-start;
  }

  .logo {
    margin-right: auto;
    flex-shrink: 0;
  }

  .nav {
    display: none;
  }

  .header-nav-cluster {
    display: none;
  }

  /* Tam ekran menüde Giriş/Kayıt; üst çubukta tekrar gösterme */
  .header-actions {
    display: none;
  }
}

@media (max-width: 600px) {
  .header-actions {
    gap: 0.35rem;
    flex-shrink: 0;
  }

  .header-actions .btn {
    padding: 0.55rem 0.8rem;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
  }
}