/* ===== HEADER / TOPBAR ===== */
#header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--topbar-height);
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    z-index: 900;
    transition: left 0.3s ease;
    gap: 1rem;
}

#header.collapsed {
    left: 0;
}

/* ===== TOGGLE BUTTON ===== */
.toggleSidebar {
    background: transparent;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    font-size: 1.1rem;
}
.toggleSidebar:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent-blue);
}

/* ===== HEADER BREADCRUMB ===== */
.header-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.header-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}
.header-breadcrumb a:hover { color: var(--accent-blue); }
.header-breadcrumb .separator { color: var(--text-muted); }
.header-breadcrumb .current { color: var(--text-primary); font-weight: 500; }

/* ===== HEADER RIGHT ===== */
.header-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-badge {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    padding: 3px 10px;
    border-radius: 20px;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
    #header {
        left: 0 !important;
    }
    .header-breadcrumb { display: none; }
}