/* Topbar Container */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: 60px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 20px;
}

/* Hamburger Menu */
.hamburger {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    margin-right: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background 0.2s;
}

/* Hamburger Menu Hover State */
.hamburger:hover {
    background: var(--hover-bg);
}

.system-notification {
    flex: 1;
    width: 100%;
    display: flex;
    justify-content: center;
}