/* ═══════════════════════════════════════════
   Astroloop — Navbar
   Kurumsal: sabit yüzey, saç teli kenarlık, ölçülü tipografi.
   ═══════════════════════════════════════════ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 clamp(20px, 4vw, 56px);
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border-bottom: 1px solid transparent;
    transition: background var(--transition-med),
                border-color var(--transition-med),
                box-shadow var(--transition-med);
}

/* Sayfa kaydırıldığında zemin sertleşir — içerik altından geçerken okunaklı kalsın */
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    border-bottom-color: var(--border-subtle);
    box-shadow: var(--shadow-sm);
}

/* ── Logo ── */
.navbar__logo {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.34em;
    text-indent: 0.34em;   /* letter-spacing'in sağda bıraktığı boşluğu dengeler */
    text-transform: uppercase;
    user-select: none;
    transition: opacity var(--transition-fast);
}

.navbar__logo:hover {
    opacity: 0.7;
}

.navbar__logo span {
    display: inline-block;
    position: relative;
}

.navbar__logo .logo-loop {
    color: var(--gold);
    display: inline-flex;
    align-items: center;
    vertical-align: baseline;
}

.logo-infinity {
    width: 1.45em;
    height: 0.72em;
    display: inline-block;
    vertical-align: -0.02em;
    color: var(--gold);
    transition: color var(--transition-fast);
}

.navbar__logo:hover .logo-infinity {
    color: var(--gold-text);
}

/* ── Menü ── */
.navbar__menu {
    display: flex;
    align-items: center;
    gap: clamp(20px, 2.6vw, 38px);
}

.navbar__link {
    position: relative;
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 21px 0;
    transition: color var(--transition-fast);
}

/* Alt çizgi göstergesi — noktadan daha kurumsal */
.navbar__link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-fast);
}

.navbar__link:hover {
    color: var(--text-primary);
}

.navbar__link:hover::after {
    transform: scaleX(1);
}

.navbar__link.active {
    color: var(--text-primary);
    font-weight: 600;
}

.navbar__link.active::after {
    transform: scaleX(1);
}

.navbar__link:focus-visible {
    outline: 2px solid var(--gold-text);
    outline-offset: 4px;
    border-radius: 2px;
}

/* ── Mobil hamburger ── */
.navbar__hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.navbar__hamburger:hover {
    background: var(--surface-inset);
}

.navbar__hamburger span {
    width: 20px;
    height: 1.5px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .navbar {
        height: 56px;
        padding: 0 16px;
        background: rgba(255, 255, 255, 0.92);
        border-bottom-color: var(--border-subtle);
    }

    .navbar__logo {
        font-size: 1rem;
        letter-spacing: 0.26em;
        text-indent: 0.26em;
    }

    .navbar__hamburger {
        display: flex;
    }

    .navbar__menu {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        /* Önceki koyu zemin (rgba(6,9,26,.95)) açık temada ters düşüyordu */
        background: var(--surface-1);
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-lg);
        padding: 10px 12px 14px;
        transform: translateY(-130%);
        transition: transform var(--transition-med);
        z-index: 999;
    }

    .navbar__menu.open {
        transform: translateY(0);
    }

    .navbar__link {
        font-size: 0.8rem;
        letter-spacing: 0.12em;
        padding: 14px 14px;
        text-align: left;
        border-radius: var(--radius-sm);
        transition: background var(--transition-fast), color var(--transition-fast);
    }

    .navbar__link::after {
        display: none;
    }

    .navbar__link:hover,
    .navbar__link.active {
        background: var(--surface-2);
        color: var(--text-primary);
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0 12px;
    }

    .navbar__logo {
        font-size: 0.92rem;
        letter-spacing: 0.2em;
        text-indent: 0.2em;
    }
}