/* ═══════════════════════════════════════════
   NAV.CSS — Navigation unifiée 49trees Records
   Utilisée par TOUTES les pages (EPK + Lore + Autres)
   ═══════════════════════════════════════════ */

/* ── Variables nav ── */
:root {
    --nav-h: 56px;
    --nav-bg: rgba(12, 12, 18, 0.94);
    --nav-blur: blur(16px);
    --nav-border: rgba(212, 175, 55, 0.12);
    --nav-text: #e6e0d3;
    --nav-text-muted: rgba(230, 224, 211, 0.55);
    --nav-gold: #d4af37;
    --nav-gold-dim: rgba(212, 175, 55, 0.6);
    --nav-hover-bg: rgba(212, 175, 55, 0.08);
    --nav-dropdown-bg: rgba(15, 15, 22, 0.97);
    --nav-radius: 6px;
    --nav-transition: 0.25s ease;
}

/* ── Reset & Base ── */
.site-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--nav-h);
    background: var(--nav-bg);
    backdrop-filter: var(--nav-blur);
    -webkit-backdrop-filter: var(--nav-blur);
    border-bottom: 1px solid var(--nav-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    transition: background var(--nav-transition);
}

.site-nav .nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 6px;
}

/* ── Brand ── */
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--nav-text);
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
    padding: 4px 12px 4px 0;
    border-right: 1px solid rgba(212, 175, 55, 0.15);
    margin-right: 6px;
    transition: color var(--nav-transition);
    white-space: nowrap;
}

.nav-brand:hover {
    color: var(--nav-gold);
}

/* ── Section indicator (ex: "Lore — Concept") ── */
.nav-section {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.68rem;
    color: var(--nav-gold-dim);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 10px;
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: 3px;
    white-space: nowrap;
    margin-right: auto;
}

/* ── Nav links container ── */
.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
}

/* ── Nav link base ── */
.nav-link {
    display: flex;
    align-items: center;
    gap: 5px;
    text-decoration: none;
    color: var(--nav-text-muted);
    font-family: system-ui, -apple-system, sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    padding: 8px 14px;
    border-radius: var(--nav-radius);
    transition: color var(--nav-transition), background var(--nav-transition);
    white-space: nowrap;
    position: relative;
}

.nav-link:hover {
    color: var(--nav-text);
    background: var(--nav-hover-bg);
}

.nav-link.is-active {
    color: var(--nav-gold);
}

.nav-link.is-active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 14px; right: 14px;
    height: 2px;
    background: var(--nav-gold);
    border-radius: 1px;
}

/* ── Hub button (special) ── */
.nav-link.nav-hub {
    color: var(--nav-gold);
    border: 1px solid rgba(212, 175, 55, 0.25);
    background: rgba(212, 175, 55, 0.06);
    font-weight: 600;
}

.nav-link.nav-hub:hover {
    background: rgba(212, 175, 55, 0.14);
    color: #f0d778;
    border-color: rgba(212, 175, 55, 0.4);
}

/* ── Active section indicator (dropdown parent) ── */
.nav-dropdown.is-active-section > .nav-link {
    color: var(--nav-gold);
    background: var(--nav-hover-bg);
    box-shadow: inset 0 -2px 0 0 var(--nav-gold);
}

/* ── Dropdown parent ── */
.nav-dropdown {
    position: relative;
}

.nav-dropdown > .nav-link::after {
    content: '▾';
    font-size: 0.65rem;
    margin-left: 3px;
    opacity: 0.5;
    transition: transform var(--nav-transition), opacity var(--nav-transition);
}

.nav-dropdown:hover > .nav-link::after,
.nav-dropdown.is-open > .nav-link::after {
    transform: rotate(180deg);
    opacity: 1;
}

/* ── Dropdown panel ── */
.nav-dropdown-panel {
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    max-width: 340px;
    background: var(--nav-dropdown-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--nav-border);
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), 0 0 1px rgba(212, 175, 55, 0.1);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-4px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown.is-open .nav-dropdown-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ── Dropdown header ── */
.nav-dropdown-header {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.62rem;
    color: var(--nav-gold-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 6px 12px 4px;
    border-bottom: 1px solid rgba(212, 175, 55, 0.08);
    margin-bottom: 4px;
}

/* ── Dropdown items ── */
.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--nav-text-muted);
    font-size: 0.8rem;
    padding: 8px 12px;
    border-radius: 6px;
    transition: color var(--nav-transition), background var(--nav-transition);
}

.nav-dropdown-item:hover {
    color: var(--nav-text);
    background: var(--nav-hover-bg);
}

.nav-dropdown-item.is-active {
    color: var(--nav-gold);
    background: rgba(212, 175, 55, 0.08);
}

.nav-dropdown-item .item-num {
    font-family: 'Courier New', monospace;
    font-size: 0.68rem;
    color: var(--nav-gold-dim);
    min-width: 22px;
}

.nav-dropdown-item .item-sep {
    color: rgba(212, 175, 55, 0.2);
    font-size: 0.6rem;
}

/* ── Dropdown grid (for Lore: 2 columns) ── */
.nav-dropdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
}

.nav-dropdown-grid .nav-dropdown-item {
    font-size: 0.75rem;
    padding: 6px 10px;
}

/* ── Mobile toggle ── */
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid rgba(212, 175, 55, 0.2);
    color: var(--nav-text);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: var(--nav-radius);
    transition: background var(--nav-transition);
    line-height: 1;
}

.nav-toggle:hover {
    background: var(--nav-hover-bg);
}

/* ── Body offset for fixed nav (only when nav is present) ── */
body:has(.site-nav) {
    padding-top: var(--nav-h) !important;
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */

@media (max-width: 900px) {
    .nav-section {
        display: none;
    }
    .nav-link {
        padding: 8px 10px;
        font-size: 0.78rem;
    }
}

@media (max-width: 720px) {
    .nav-toggle {
        display: block;
        margin-left: auto;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-h);
        left: 0; right: 0;
        bottom: 0;
        background: var(--nav-dropdown-bg);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        gap: 4px;
        overflow-y: auto;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
    }

    .nav-links.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-link {
        padding: 12px 16px;
        font-size: 0.9rem;
        border-bottom: 1px solid rgba(212, 175, 55, 0.06);
    }

    .nav-link.nav-hub {
        text-align: center;
    }

    /* Mobile: dropdowns become expanded sections */
    .nav-dropdown-panel {
        position: static;
        transform: none;
        min-width: 100%;
        max-width: 100%;
        opacity: 1;
        visibility: visible;
        background: rgba(212, 175, 55, 0.03);
        border: none;
        border-radius: 6px;
        box-shadow: none;
        padding: 4px 0 4px 16px;
        display: none;
    }

    .nav-dropdown.is-open .nav-dropdown-panel {
        display: block;
    }

    .nav-dropdown-grid {
        grid-template-columns: 1fr;
    }

    .nav-brand {
        border-right: none;
        padding-right: 0;
        margin-right: 0;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .nav-inner {
        padding: 0 12px;
    }
    .nav-brand span {
        font-size: 0.85rem;
    }
}