/* 基础样式 */
body {
    background-color: #000000;
    color: #fff;
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
}

/* 状态栏 */
.status-bar {
    background-color: #000;
    padding: 5px 15px;
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

/* 应用头部 */
.app-header {
    text-align: center;
    padding: 15px 0;
    border-bottom: 1px solid #333;
    position: relative;
}

.app-header h1 {
    color: #1DB954;
    font-size: 1.25rem;
    font-weight: bold;
    margin: 0;
}

/* 导航按钮 */
.nav-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.nav-button-left {
    left: 15px;
}

.nav-button-right {
    right: 15px;
}

/* 卡片样式 */
.card {
    background-color: #1e1e1e;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 16px;
}

/* 菜单部分 */
.menu-section {
    background-color: #111111;
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #222222;
}

.menu-item:last-child {
    border-bottom: none;
}

.icon-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    background-image: linear-gradient(45deg, rgba(0,0,0,0.3), rgba(255,255,255,0.1));
}

.menu-item-text {
    flex: 1;
    font-size: 15px;
}

.menu-item-right {
    color: #666;
    font-size: 14px;
}

/* VIP卡片 */
.vip-card {
    background-image: linear-gradient(to right, #1DB954, #0d6431);
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
}

.vip-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
}

/* 底部导航 */
.bottom-tab {
    background-color: #111111;
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 10px 0;
    display: flex;
    justify-content: space-around;
    border-top: 1px solid #333;
    z-index: 100;
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 12px;
    text-decoration: none;
    color: #fff;
}

.active-tab {
    color: #1DB954;
}

/* 按钮样式 */
.btn {
    border-radius: 8px;
    padding: 10px 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: #1DB954;
    color: #fff;
}

.btn-secondary {
    background-color: #333;
    color: #fff;
}

/* 动画效果 */
@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

/* 响应式设计 */
@media (max-width: 375px) {
    .menu-item {
        padding: 12px;
    }
    
    .icon-circle {
        width: 32px;
        height: 32px;
    }
    
    .menu-item-text {
        font-size: 14px;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 768px;
        margin: 0 auto;
    }
    
    .bottom-tab {
        max-width: 768px;
        left: 50%;
        transform: translateX(-50%);
    }
}