/* =============================================================================
   Sevart Gallery — nav.css
   Fixed navigation bar: transparent → frosted glass on scroll
   ============================================================================= */


/* ─── Nav Shell ─────────────────────────────────────────────────────────────── */

.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    transition: background 0.4s ease, box-shadow 0.4s ease;
    background: transparent;
}

/* Scrolled state — applied by nav.js */
.site-header.is-scrolled .site-nav {
    background: rgba(250, 247, 244, 0.97);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: 0 1px 0 rgba(26, 25, 23, 0.08);
}

/* Non-hero pages — nav needs a background immediately (no full-height image beneath) */
.site-header.nav-solid .site-nav {
    background: rgba(250, 247, 244, 0.97);
    box-shadow: 0 1px 0 rgba(26, 25, 23, 0.08);
}


/* ─── Inner Container ───────────────────────────────────────────────────────── */

.site-nav__inner {
    height: var(--nav-height);
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap;
}


/* ─── Logo ──────────────────────────────────────────────────────────────────── */

.site-nav__logo {
    display: inline-flex;
    align-items: center;        /* centre wordmark and GALLERY in the same row */
    gap: 8px;
    text-decoration: none;
    flex-shrink: 0;
    align-self: center;         /* ensure logo centres itself in the nav bar */
    line-height: 1;
}

/* "SEVART" — Playfair Display serif wordmark */
.site-nav__logo-wordmark {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 500;
    color: var(--color-dark);
    letter-spacing: 0.04em;
    line-height: 1;
    display: block;
}

/* "ART" part in gold */
.site-nav__logo-art {
    color: var(--color-gold);
}

/* "GALLERY" — small tracked sans, sits beside the wordmark */
.site-nav__logo-sub {
    font-family: var(--font-sans);
    font-size: 10px;
    letter-spacing: 0.28em;
    color: var(--color-text-muted);
    font-weight: 400;
    line-height: 1;
    display: block;
    /* Optical nudge — GALLERY baseline aligns with bottom of wordmark */
    padding-top: 5px;
}


/* ─── Desktop Links ─────────────────────────────────────────────────────────── */

.site-nav__links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav__links li {
    margin: 0;
}

.site-nav__links a {
    font-family: var(--font-sans);
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--color-text-mid);
    text-decoration: none;
    padding: 2px 0;
    border-bottom: 1px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    white-space: nowrap;
}

.site-nav__links a:hover {
    color: var(--color-dark);
}

/* Active page link */
.site-nav__links .current-menu-item > a,
.site-nav__links .current_page_item > a,
.site-nav__links .current-page-ancestor > a {
    color: var(--color-dark);
    border-bottom-color: var(--color-gold);
}


/* ─── Hamburger (mobile only) ───────────────────────────────────────────────── */

.site-nav__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    margin-right: -6px; /* optical alignment */
}

.site-nav__bar {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-dark);
    transition: opacity var(--transition-fast);
}


/* ─── Mobile Full-Screen Overlay ────────────────────────────────────────────── */

.site-nav__mobile {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 200;

    /* Hidden by default */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.site-nav__mobile.is-open {
    opacity: 1;
    pointer-events: all;
}

.site-nav__mobile-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--color-dark);
    line-height: 1;
    /* Minimum 44×44px touch target */
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.site-nav__mobile-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
}

.site-nav__mobile-links a {
    font-family: var(--font-serif);
    font-size: 28px;
    color: var(--color-dark);
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: color var(--transition-fast);
}

.site-nav__mobile-links a:hover {
    color: var(--color-gold);
}


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

@media (max-width: 900px) {
    .site-nav__links {
        display: none;
    }

    .site-nav__hamburger {
        display: flex;
    }
}

/* ─── Nav on Hero (transparent state) ───────────────── */

/* ONLY on homepage hero */
.home .site-header:not(.is-scrolled) .site-nav__logo-wordmark {
    color: #FAF7F4;
}

.home .site-header:not(.is-scrolled) .site-nav__logo-sub {
    color: rgba(250, 247, 244, 0.7);
}

.home .site-header:not(.is-scrolled) .site-nav__links a {
    color: rgba(250, 247, 244, 0.85);
}

.home .site-header:not(.is-scrolled) .site-nav__links a:hover {
    color: #FAF7F4;
}

.home .site-header:not(.is-scrolled) .site-nav__logo-wordmark,
.home .site-header:not(.is-scrolled) .site-nav__links a {
    text-shadow: 0 1px 3px rgba(0,0,0,0.35);
}