* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: #1890ff;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #40a9ff;
}

img {
    max-width: 100%;
    height: auto;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 400;
    text-align: center;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    color: #fff;
    background-color: #1890ff;
    border-color: #1890ff;
}

.btn-primary:hover {
    background-color: #40a9ff;
    border-color: #40a9ff;
}

.btn-success {
    color: #fff;
    background-color: #52c41a;
    border-color: #52c41a;
}

.btn-success:hover {
    background-color: #73d13d;
    border-color: #73d13d;
}

.btn-warning {
    color: #fff;
    background-color: #faad14;
    border-color: #faad14;
}

.btn-warning:hover {
    background-color: #ffc53d;
    border-color: #ffc53d;
}

.btn-danger {
    color: #fff;
    background-color: #ff4d4f;
    border-color: #ff4d4f;
}

.btn-danger:hover {
    background-color: #ff7875;
    border-color: #ff7875;
}

.btn-default {
    color: #333;
    background-color: #fff;
    border-color: #d9d9d9;
}

.btn-default:hover {
    color: #1890ff;
    border-color: #1890ff;
}

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.card {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.card-content {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
}

.logo:hover {
    color: #fff;
    opacity: 0.9;
}

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

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #fff;
}

.header-right .btn-default {
    background-color: rgba(255, 255, 255, 0.2);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
}

.header-right .btn-default:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.nav {
    background-color: rgba(0, 0, 0, 0.1);
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 5px;
    padding: 0;
    margin: 0;
    overflow-x: auto;
}

.nav li {
    flex-shrink: 0;
}

.nav a {
    display: block;
    padding: 12px 20px;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 14px;
}

.nav a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.main {
    padding: 30px 0;
    min-height: calc(100vh - 200px);
}

.section {
    margin-bottom: 40px;
}

.section-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #333;
    padding-bottom: 10px;
    border-bottom: 2px solid #1890ff;
    display: inline-block;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -10px;
}

.col-3 {
    flex: 0 0 25%;
    max-width: 25%;
    padding: 0 10px;
    margin-bottom: 20px;
}

.col-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    padding: 0 10px;
    margin-bottom: 20px;
}

.col-6 {
    flex: 0 0 50%;
    max-width: 50%;
    padding: 0 10px;
    margin-bottom: 20px;
}

.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
    padding: 0 10px;
    margin-bottom: 20px;
}

.footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-col {
    flex: 1;
    min-width: 200px;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #fff;
}

/* 轮播图样式 */
.carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 8px;
}

.carousel-inner {
    position: relative;
    width: 100%;
    height: 400px;
}

.carousel-item {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.carousel-item.active {
    display: block;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    z-index: 10;
}

.carousel-indicators li {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.carousel-indicators li.active {
    background-color: #fff;
    width: 20px;
    border-radius: 5px;
}

.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.5);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 20px;
    color: #333;
    z-index: 10;
    transition: all 0.3s;
}

.carousel-prev:hover,
.carousel-next:hover {
    background: rgba(255, 255, 255, 0.8);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #1890ff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #999;
}

.carousel {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.carousel-inner {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.carousel-item {
    display: none;
    position: relative;
    transition: transform 0.6s ease;
}

.carousel-item.active {
    display: block;
}

.carousel-indicators {
    position: absolute;
    right: 0;
    bottom: 15px;
    left: 0;
    z-index: 15;
    display: flex;
    justify-content: center;
    padding-left: 0;
    margin-right: 15%;
    margin-left: 15%;
    list-style: none;
}

.carousel-indicators li {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.carousel-indicators li.active {
    background-color: #fff;
}

.pagination {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.pagination li {
    margin: 0 5px;
}

.pagination a {
    display: inline-block;
    padding: 8px 12px;
    background-color: #fff;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s;
}

.pagination a:hover {
    color: #1890ff;
    border-color: #1890ff;
}

.pagination li.active a {
    background-color: #1890ff;
    color: #fff;
    border-color: #1890ff;
}

.form-group {
    margin-bottom: 15px;
}

.form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #333;
}

.form-control {
    display: block;
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #fff;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #1890ff;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23333' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 16px 12px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.alert {
    padding: 12px 15px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.alert-success {
    background-color: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #389e0d;
}

.alert-error {
    background-color: #fff2f0;
    border: 1px solid #ffccc7;
    color: #cf1322;
}

.alert-warning {
    background-color: #fffbe6;
    border: 1px solid #ffe58f;
    color: #d48806;
}

.alert-info {
    background-color: #e6f7ff;
    border: 1px solid #91d5ff;
    color: #0050b3;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
    color: #fff;
}

.badge-success {
    background-color: #52c41a;
}

.badge-warning {
    background-color: #faad14;
}

.badge-danger {
    background-color: #ff4d4f;
}

.badge-info {
    background-color: #1890ff;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e8e8e8;
}

.table th {
    background-color: #fafafa;
    font-weight: 600;
    color: #333;
}

.table tbody tr:hover {
    background-color: #fafafa;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e8e8e8;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    font-size: 24px;
    cursor: pointer;
    color: #999;
    background: none;
    border: none;
}

.modal-close:hover {
    color: #333;
}

.tab-container {
    margin-bottom: 20px;
}

.tab-nav {
    display: flex;
    border-bottom: 1px solid #e8e8e8;
    margin-bottom: 20px;
}

.tab-nav-item {
    padding: 10px 20px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
    color: #666;
}

.tab-nav-item:hover {
    color: #1890ff;
}

.tab-nav-item.active {
    color: #1890ff;
    border-bottom-color: #1890ff;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.price {
    font-size: 24px;
    font-weight: 600;
    color: #ff4d4f;
}

.price::before {
    content: '¥';
    font-size: 16px;
}

.stock {
    color: #999;
    font-size: 12px;
}

.empty {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 15px;
}

.empty-text {
    font-size: 16px;
}

@media (max-width: 992px) {
    .col-3,
    .col-4 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        gap: 10px;
    }

    .nav ul {
        flex-wrap: nowrap;
    }

    .col-3,
    .col-4,
    .col-6 {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-col {
        min-width: 100%;
    }
}