/* PR #2 — Studio shell: header, brand, nav, More menu.
   Duplicated in styles.css during migration; solveza-shell.css owns drawer/toggle. */

/* ====== Header ====== */
.lab-header {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 48px;
    border-bottom: 1px solid var(--border-subtle);
    backdrop-filter: blur(12px);
    background: rgba(7, 7, 11, 0.6);
}

.lab-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-mark {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-gold);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.08), transparent 70%);
}

.brand-svg { width: 32px; height: 32px; }

.brand-line {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 2px;
}

.brand-title {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.lab-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lab-version {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

/* ====== Nav ====== */
.lab-nav {
    display: flex;
    gap: 4px;
    align-items: center;
    margin-left: 32px;
    margin-right: auto;
    padding-left: 32px;
    border-left: 1px solid var(--border-subtle);
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.18s ease;
    letter-spacing: 0.02em;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

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

.nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    background: var(--gold);
    color: #0a0a10;
    border-radius: 9px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
}

/* Studio nav — More menu */
.nav-more-wrap { position: relative; display: inline-flex; }

.nav-more-toggle {
    border: none;
    background: transparent;
    font: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.nav-more-toggle::after {
    content: '▾';
    font-size: 10px;
    opacity: 0.7;
}

.nav-more-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 168px;
    padding: 8px;
    background: var(--bg-elevated, #0f0f17);
    border: 1px solid var(--border-medium, rgba(255,255,255,0.12));
    border-radius: 10px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.45);
    z-index: 50;
    flex-direction: column;
    gap: 4px;
}

.nav-more-wrap.open .nav-more-menu { display: flex; }

.nav-more-menu .nav-link {
    display: block;
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border-radius: 8px;
    box-sizing: border-box;
}

.nav-more-menu .nav-link:hover { background: rgba(255,255,255,0.06); }

.sn-more-label {
    margin: 12px 0 6px;
    padding: 0 4px;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted, #6e6a62);
}

@media (max-width: 960px) {
    .lab-header { padding: 20px 24px; flex-wrap: wrap; }
    .lab-nav {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        width: 100%;
        order: 3;
        padding-top: 8px;
    }
}

@media (max-width: 520px) {
    .lab-header { padding: 16px; }
    .brand-title { font-size: 21px; }
    .brand-line { font-size: 10px; }
}