/**
 * 会员管理系统 - 用户端样式
 */

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --primary-hover: #5568d3;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f7fa;
}

/* 顶部导航 */
.navbar {
    background: linear-gradient(135deg, var(--primary-color), #764ba2);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.navbar-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.95rem;
}

.navbar-link:hover {
    color: white;
}

.navbar-btn {
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.3s;
}

.navbar-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.container-sm {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

/* 卡片 */
.card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--light-color);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

/* 表单 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-color);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    cursor: pointer;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

/* 标签 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.badge-success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
}

.badge-warning {
    background: rgba(255, 193, 7, 0.1);
    color: #d6a206;
}

.badge-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
}

.badge-info {
    background: rgba(23, 162, 184, 0.1);
    color: var(--info-color);
}

.badge-vip {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
}

/* 会员信息卡片 */
.member-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.info-card {
    background: linear-gradient(135deg, var(--primary-color), #764ba2);
    color: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
}

.info-card.balance {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.info-card.vip {
    background: linear-gradient(135deg, #fa709a, #fee140);
}

.info-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.info-value {
    font-size: 2rem;
    font-weight: 700;
}

/* 商品列表 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    cursor: pointer;
}

.product-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-card.recommend {
    border-color: var(--warning-color);
}

.product-card.recommend::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--warning-color);
    color: var(--dark-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.product-desc {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    min-height: 2.5rem;
}

.product-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.product-original-price {
    text-decoration: line-through;
    color: #999;
    font-size: 1rem;
}

.product-features {
    list-style: none;
    margin: 1rem 0;
    text-align: left;
}

.product-features li {
    padding: 0.4rem 0;
    font-size: 0.9rem;
    color: #666;
}

.product-features li::before {
    content: '✓ ';
    color: var(--success-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* 表格 */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--light-color);
    font-weight: 600;
    color: var(--dark-color);
}

.table tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

/* 分页 */
.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.pagination-link {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    text-decoration: none;
    color: var(--dark-color);
    transition: all 0.3s;
}

.pagination-link:hover,
.pagination-link.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 提示消息 */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    color: #d6a206;
    border-left: 4px solid var(--warning-color);
}

/* 二维码支付 */
.payment-qr {
    text-align: center;
    padding: 2rem;
}

.payment-qr img {
    max-width: 300px;
    margin: 1rem auto;
}

.payment-timer {
    font-size: 1.2rem;
    color: var(--danger-color);
    margin: 1rem 0;
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .container {
        padding: 1rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .member-info {
        grid-template-columns: 1fr;
    }

    .table {
        font-size: 0.9rem;
    }

    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer a:hover {
    color: white;
}