/* Sticky top navigation, mobile toggle and the generic <details> menu. */
.app-navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    border-bottom: 1px solid var(--app-border);
    background: var(--app-surface-translucent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.app-navbar::after {
    /* Thin gold hairline that fades out at both ends. */
    position: absolute;
    right: 0;
    bottom: -1px;
    left: 0;
    height: 1px;
    content: "";
    background: linear-gradient(90deg, transparent, var(--app-gold) 30%, var(--app-gold) 70%, transparent);
    opacity: 0.6;
}

.app-navbar-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-height: var(--app-nav-height);
}

.app-nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--app-font-display);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--app-text-strong);
    text-decoration: none;
}

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

.app-nav-brand-mark {
    width: 1.5rem;
    height: 1.5rem;
    flex: 0 0 auto;
}

.app-nav-toggle {
    display: none;
    margin-left: auto;
    width: 2.5rem;
    height: 2.5rem;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-sm);
    color: var(--app-text);
}

.app-nav-toggle-bar {
    display: block;
    width: 1.1rem;
    height: 2px;
    background: currentcolor;
    box-shadow: 0 -6px 0 currentcolor, 0 6px 0 currentcolor;
}

.app-nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.app-nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
    margin: 0 0.75rem 0 0;
    list-style: none;
}

.app-nav-link {
    display: inline-block;
    padding: 0.45rem 0.75rem;
    border-radius: var(--app-radius-sm);
    color: var(--app-text);
    font-size: 0.95rem;
    text-decoration: none;
}

.app-nav-link:hover {
    color: var(--app-text-strong);
    background: var(--app-gold-glow);
}

.app-nav-link[aria-current="page"] {
    color: var(--app-gold-soft);
    box-shadow: inset 0 -2px 0 var(--app-gold);
    border-radius: 0;
}

.app-nav-user {
    color: var(--app-muted);
    font-size: 0.85rem;
}

/* Generic dropdown built on <details>; site.js closes it on outside click / Escape. */
.app-menu {
    position: relative;
}

.app-menu-panel {
    position: absolute;
    top: calc(100% + 0.4rem);
    right: 0;
    z-index: 1040;
    min-width: 11rem;
    padding: 0.35rem;
    border: 1px solid var(--app-border-strong);
    border-radius: var(--app-radius);
    background: var(--app-surface-raised);
    box-shadow: var(--app-shadow-sm);
}

.app-menu-panel ul {
    padding: 0;
    margin: 0;
    list-style: none;
}

.app-menu-item {
    display: flex;
    width: 100%;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.65rem;
    border-radius: var(--app-radius-sm);
    color: var(--app-text);
    text-align: left;
    text-decoration: none;
}

.app-menu-item:hover,
.app-menu-item:focus-visible {
    color: var(--app-text-strong);
    background: var(--app-gold-glow);
}

@media (max-width: 767.98px) {
    .app-nav-toggle {
        display: inline-flex;
    }

    .app-nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
        margin: 0;
        padding: 0.75rem var(--app-gutter) 1rem;
        border-bottom: 1px solid var(--app-border);
        background: var(--app-surface-raised);
        box-shadow: var(--app-shadow-sm);
    }

    .app-nav-menu[data-open="true"] {
        display: flex;
    }

    .app-nav-links {
        flex-direction: column;
        align-items: stretch;
        margin: 0;
    }

    .app-nav-link {
        display: block;
    }

    .app-menu-panel {
        position: static;
        margin-top: 0.4rem;
    }
}