/* 顶部菜单按钮 */
.menu-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
    background: none;
    border: none;
    font-size: 24px;
    color: #fff;
    cursor: pointer;
}

/* 侧边栏容器 */
.sidebar {
    position: fixed;
    top: 0;
    left: -250px;
    width: 250px;
    height: 100%;
    background-color: #1c1c1c;
    padding: 20px;
    z-index: 9999;
    transition: left 0.3s ease;
    display: flex;
    flex-direction: column;
}
.sidebar a{
    text-decoration: none;
}
.sidebar.active {
    left: 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 30px;
    color: #ffffff;
}

.logo span {
    color: #f60;
}

.menu-item {
    background: #333;
    border: none;
    color: #fff;
    padding: 12px 20px;
    margin: 10px 0;
    text-align: left;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.2s ease;
}

.menu-item:hover {
    background: #444;
}

.join-btn {
    background: #f60;
    color: #fff;
}

/* 遮罩层（可选） */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    z-index: 999;
}

.overlay.active {
    display: block;
}