.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.4s ease, box-shadow 0.4s ease;
}

.header--scrolled {
    background-color: rgba(10, 10, 10, 0.98);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

/* Tam genişlik — no container */
.header__inner {
    display: flex;
    align-items: stretch;       /* nav öğeleri header'ın tam yüksekliğini kaplasın */
    height: 68px;
    width: 100%;
    padding: 0 32px 0 0;
}

/* ─── Logo — accordion başlangıcıyla hizalı (440px) ─────── */
.header__logo {
    display: flex;
    flex-direction: column;
    justify-content: center;    /* dikey ortala (inner artık stretch) */
    line-height: 1;
    flex-shrink: 0;
    text-decoration: none;
    /* hero__text: width 440px + padding-left 40px → logo içerik 40px'ten başlar */
    width: 440px;
    padding-left: 40px;
}

.header__logo-text {
    display: block;
    font-size: 32px;
    letter-spacing: -1px;
    white-space: nowrap;
}

.header__logo-sub {
    font-size: 7px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--color-gray);
    text-transform: uppercase;
    margin-top: 3px;
    display: block;
}

/* ─── Nav — accordion başlangıcından itibaren, eşit dağılım ── */
.header__nav {
    flex: 1;
    display: flex;
    align-items: center;        /* menü öğeleri dikeyde ortalanır */
    min-width: 0;
    margin-right: 28px;         /* ÜYE OL ile çakışmaya karşı güvenli boşluk */
}

.header__nav-list {
    display: flex;
    align-items: center;
    width: 100%;
    justify-content: space-between;  /* öğeler eşit aralıkla yayılır */
}

.header__nav-link {
    position: relative;
    display: flex;
    align-items: center;        /* metni dikey ortala */
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: var(--color-gray-light);
    padding: 0 6px;
    transition: color var(--transition);
    white-space: nowrap;
    text-transform: uppercase;
    font-style: normal;
}

.header__nav-link:hover {
    color: var(--color-white);
}

.header__nav-link.active {
    color: var(--color-accent);
}

/* ─── Sağ: ÜYE OL butonu ────────────────────────────────── */
.header__actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    margin-left: auto;      /* sağa yaslanır */
    padding-right: 32px;
}

.header__login {
    font-size: 12px;
    padding: 9px 22px;
}

/* ─── Drawer içi öğeler (yalnızca mobil) — masaüstünde gizli ── */
.header__nav-head,
.header__nav-cta {
    display: none;
}

/* ─── Backdrop (mobil menü açıkken arka plan karartma) ──────── */
.header__backdrop {
    position: fixed;
    inset: 0;
    z-index: 990;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.header__backdrop[hidden] {
    display: none;
}

.header__backdrop--show {
    opacity: 1;
}

/* ─── Hamburger ──────────────────────────────────────────── */
.header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    padding: 6px;
    border-radius: var(--radius);
    transition: background var(--transition);
    cursor: pointer;
}

.header__hamburger:hover {
    background: rgba(255, 255, 255, 0.06);
}

.header__hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform-origin: center;
}

.header__hamburger--open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.header__hamburger--open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.header__hamburger--open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ─── Responsive ─────────────────────────────────────────── */

/* 1300px: logo biraz daralır, nav nefes alanını korur */
@media (max-width: 1300px) {
    .header__logo {
        width: 380px;
        padding-left: 32px;
    }

    .header__nav {
        margin-right: 20px;
    }

    .header__nav-link {
        font-size: 11px;
        padding: 0 4px;
    }
}

/* 1180px: 7 menü + ÜYE OL artık sığmaz → off-canvas drawer'a geç */
@media (max-width: 1180px) {
    .header__logo {
        width: auto;
        padding-left: 24px;
    }

    .header__actions {
        padding-right: 20px;
    }

    /* ÜYE OL üst barda gizlenir; drawer içine taşındı (daha temiz mobil bar) */
    .header__login {
        display: none;
    }

    .header__hamburger {
        display: flex;
    }

    /* ── Off-canvas drawer (sağdan kayan modern panel) ──
       NOT: .header'da backdrop-filter var → fixed alt öğeler için
       containing block oluşturur. Bu yüzden bottom:0 ile değil,
       height:100dvh ile tam yükseklik veriyoruz. */
    .header__nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: auto;
        left: auto;
        height: 100vh;
        height: 100dvh;
        z-index: 1001;
        width: min(360px, 84vw);
        flex: none;
        margin: 0;
        flex-direction: column;
        align-items: stretch;
        background: linear-gradient(180deg, #121212 0%, #0a0a0a 100%);
        border-left: 1px solid var(--color-border);
        box-shadow: -24px 0 60px rgba(0, 0, 0, 0.55);
        padding: 0;
        transform: translateX(105%);
        transition: transform 0.42s cubic-bezier(0.16, 1, 0.3, 1);
        overflow-y: auto;
        overscroll-behavior: contain;
    }

    .header__nav--open {
        transform: translateX(0);
    }

    /* Resize sırasında breakpoint geçiş flash'ını önler:
       drawer animasyonsuz olarak doğrudan konumuna oturur */
    .header__nav--no-transition {
        transition: none;
    }

    /* Drawer başlığı: logo + kapat butonu */
    .header__nav-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 22px 24px 18px;
        border-bottom: 1px solid var(--color-border);
    }

    .header__nav-close {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid var(--color-border);
        border-radius: 50%;
        color: var(--color-white);
        transition: background var(--transition), color var(--transition), transform var(--transition);
    }

    .header__nav-close:hover {
        background: var(--color-accent);
        color: #000;
        transform: rotate(90deg);
    }

    /* Menü listesi: dikey, geniş dokunma alanı, sol accent göstergesi */
    .header__nav-list {
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;   /* base'teki space-between'i ezer */
        width: 100%;
        padding: 18px 16px;
        gap: 4px;
        flex: 1;
    }

    .header__nav-link {
        display: flex;
        align-items: center;
        width: 100%;
        padding: 15px 18px;
        font-size: 14px;
        letter-spacing: 1px;
        border-radius: 10px;
        /* açılışta kademeli giriş animasyonu */
        opacity: 0;
        transform: translateX(18px);
    }

    .header__nav-link:hover {
        background: rgba(255, 255, 255, 0.04);
    }

    .header__nav-link.active {
        background: var(--color-accent-subtle);
    }

    /* Kademeli giriş: panel açıkken her öğe sırayla belirir */
    .header__nav--open .header__nav-link {
        animation: navItemIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    }

    .header__nav--open .header__nav-list li:nth-child(1) .header__nav-link { animation-delay: 0.08s; }
    .header__nav--open .header__nav-list li:nth-child(2) .header__nav-link { animation-delay: 0.13s; }
    .header__nav--open .header__nav-list li:nth-child(3) .header__nav-link { animation-delay: 0.18s; }
    .header__nav--open .header__nav-list li:nth-child(4) .header__nav-link { animation-delay: 0.23s; }
    .header__nav--open .header__nav-list li:nth-child(5) .header__nav-link { animation-delay: 0.28s; }
    .header__nav--open .header__nav-list li:nth-child(6) .header__nav-link { animation-delay: 0.33s; }
    .header__nav--open .header__nav-list li:nth-child(7) .header__nav-link { animation-delay: 0.38s; }

    @keyframes navItemIn {
        to { opacity: 1; transform: translateX(0); }
    }

    /* Drawer alt CTA: ÜYE OL + sosyal medya */
    .header__nav-cta {
        display: flex;
        flex-direction: column;
        gap: 18px;
        padding: 20px 24px 28px;
        border-top: 1px solid var(--color-border);
        margin-top: auto;
    }

    .header__nav-join {
        justify-content: center;
        width: 100%;
        padding: 14px 20px;
        font-size: 13px;
        letter-spacing: 1px;
    }

    .header__nav-social {
        display: flex;
        justify-content: center;
        gap: 14px;
    }

    .header__nav-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        border-radius: 50%;
        color: var(--color-gray-light);
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid var(--color-border);
        transition: color var(--transition), background var(--transition), transform var(--transition);
    }

    .header__nav-social a:hover {
        color: #000;
        background: var(--color-accent);
        transform: translateY(-2px);
    }
}

@media (max-width: 480px) {
    .header__logo {
        padding-left: 18px;
    }

    .header__logo-text {
        font-size: 26px;
    }

    .header__logo-sub {
        display: none;
    }

    .header__nav {
        width: 86vw;
    }
}

/* Hareket azaltma tercihi: animasyonları kapat */
@media (prefers-reduced-motion: reduce) {
    .header__nav,
    .header__nav--open .header__nav-link {
        transition: none;
        animation: none;
    }

    .header__nav--open .header__nav-link {
        opacity: 1;
        transform: none;
    }
}