/* ── Top bar ──────────────────────────────────────── */
#topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 5px 14px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    position: relative;
    z-index: 200;
}

#topbar-menu {
    display: flex;
    gap: 2px;
}

.topbar-item {
    padding: 4px 12px;
    color: var(--text-secondary);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: 2px;
    text-decoration: none;
    transition: color 0.12s, background 0.12s;
}
.topbar-item:hover { color: var(--text-primary); background: var(--bg-hover); }
.topbar-item.active { color: var(--accent); }

#topbar-links {
    display: flex;
    gap: 8px;
}

#theme-selector-mobile {
    display: none;
}

/* Hide About/Contact from hamburger menu on desktop */
#topbar-menu .topbar-item[href="about.html"],
#topbar-menu .topbar-item[href="contact.html"] {
    display: none;
}

.topbar-link {
    padding: 4px 10px;
    color: var(--text-secondary);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    transition: color 0.12s;
}
.topbar-link:hover { color: var(--text-primary); }
.topbar-link.active { color: var(--accent); }

#status {
    text-align: center;
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
}

.topbar-selector {
    padding: 4px 8px;
    font-size: 11px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    border-radius: 2px;
    cursor: pointer;
    font-family: Consolas, monospace;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: border-color 0.12s, color 0.12s;
}

.topbar-selector:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.topbar-selector:focus {
    outline: none;
    border-color: var(--accent);
}

/* ── Mobile hamburger menu ────────────────────────── */
#hamburger-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

#hamburger-btn span {
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    transition: all 0.3s;
}

.mobile-menu-close {
    display: none;
    position: absolute;
    top: 8px;
    right: 12px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.12s;
}

.mobile-menu-close:hover {
    color: var(--text-primary);
}

#mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px;
    gap: 8px;
    z-index: 199;
}

#mobile-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 4px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#mobile-menu a:hover {
    color: var(--text-primary);
}

#mobile-menu a.active {
    color: var(--accent);
}

/* ── Mobile responsive ────────────────────────────── */
@media (max-width: 1200px) {
    #topbar {
        padding: 6px 8px;
    }

    #hamburger-btn {
        display: flex;
    }

    #topbar-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        gap: 0;
        padding: 50px 12px 12px;
        z-index: 300;
        overflow-y: auto;
    }

    #topbar-menu.mobile-open {
        display: flex;
    }

    #topbar-menu.mobile-open .mobile-menu-close {
        display: block;
    }

    .topbar-item {
        padding: 12px 8px;
        font-size: 12px;
        border-bottom: 1px solid var(--border);
    }

    /* Show About/Contact in hamburger menu on mobile */
    #topbar-menu .topbar-item[href="about.html"],
    #topbar-menu .topbar-item[href="contact.html"] {
        display: block;
    }

    #status {
        font-size: 10px;
        flex-grow: 0;
    }

    #topbar-links {
        display: none;
    }

    .topbar-link {
        display: none;
    }

    #theme-selector {
        display: none;
    }

    #theme-selector-mobile {
        display: block;
        margin-top: 8px;
    }
}