.header {
    height: var(--header-height);
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    box-shadow: var(--shadow);
    z-index: 10;
}

.header-left h2 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background-color: var(--bg-secondary);
    border-radius: 20px;
    font-size: var(--text-sm);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online {
    background-color: var(--status-online);
    box-shadow: 0 0 8px var(--status-online);
}

.status-dot.offline {
    background-color: var(--status-offline);
}

.theme-toggle {
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

.theme-toggle:hover {
    color: var(--accent-color);
}

.theme-toggle .icon {
    width: 20px;
    height: 20px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.user-avatar svg {
    width: 18px;
    height: 18px;
}

.user-name {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}