/* ==================== 全局变量 ==================== */
:root {
    /* 主色调 */
    --primary-blue: #4A90E2;
    --primary-orange: #FF9F40;
    --primary-purple: #9B59B6;
    --primary-pink: #FF6B9D;
    --primary-green: #52C41A;
    
    /* 辅助色 */
    --light-blue: rgba(74, 144, 226, 0.1);
    --light-orange: rgba(255, 159, 64, 0.1);
    --light-purple: rgba(155, 89, 182, 0.1);
    --light-pink: rgba(255, 107, 157, 0.1);
    --light-green: rgba(82, 196, 26, 0.1);
    
    /* 文本颜色 */
    --text-dark: #2C3E50;
    --text-gray: #7F8C8D;
    --text-light: #95A5A6;
    
    /* 背景和边框 */
    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --border-light: #E8ECEF;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-color: 0 12px 30px rgba(74, 144, 226, 0.2);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px 0;
    color: var(--text-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 顶部导航 ==================== */
.header {
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--light-blue) 100%);
    border-radius: var(--radius-xl);
    padding: 25px 30px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 30px;
    border-left: 5px solid var(--primary-blue);
}

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

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.site-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 12px;
}

.site-title i {
    font-size: 2rem;
}

.back-btn {
    background: var(--primary-blue);
    color: white;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    transition: var(--transition);
}

.back-btn:hover {
    background: #3a7bc8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.rules-btn {
    background: var(--primary-green);
    color: white;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: none;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    font-size: 1rem;
}

.rules-btn:hover {
    background: #45a515;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==================== 区块标题 ==================== */
.section-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-dark);
}

.section-title i {
    font-size: 1.8rem;
}

/* ==================== 积分查询区域 ==================== */
.points-query {
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--light-orange) 100%);
    border-radius: var(--radius-xl);
    padding: 35px 30px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 30px;
    border-left: 5px solid var(--primary-orange);
}

.points-query .section-title {
    color: var(--primary-orange);
}

.points-query .section-title i {
    color: var(--primary-orange);
}

.query-form {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 20px;
    align-items: end;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.input-group input {
    padding: 12px 16px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-white);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(255, 159, 64, 0.1);
}

.query-btn {
    padding: 12px 30px;
    background: var(--primary-orange);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.query-btn:hover {
    background: #ff8c1f;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.query-result {
    margin-top: 20px;
    padding: 20px;
    border-radius: var(--radius-md);
    display: none;
}

.query-result.success {
    display: block;
    background: linear-gradient(135deg, rgba(82, 196, 26, 0.1) 0%, rgba(82, 196, 26, 0.05) 100%);
    border-left: 4px solid var(--primary-green);
}

.query-result.error {
    display: block;
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1) 0%, rgba(231, 76, 60, 0.05) 100%);
    border-left: 4px solid #e74c3c;
}

.student-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
}

.info-item i {
    color: var(--primary-orange);
    font-size: 1.2rem;
}

.info-item strong {
    color: var(--text-dark);
}

.points-display {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-orange);
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.points-display i {
    font-size: 2.2rem;
}

/* ==================== 商品展示区域 ==================== */
.products-section {
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--light-purple) 100%);
    border-radius: var(--radius-xl);
    padding: 35px 30px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 30px;
    border-left: 5px solid var(--primary-purple);
}

.products-section .section-title {
    color: var(--primary-purple);
}

.products-section .section-title i {
    color: var(--primary-purple);
}

/* 分类筛选 */
.category-filter {
    display: flex;
    gap: 12px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    background: var(--bg-white);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-gray);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--primary-purple);
    color: var(--primary-purple);
}

.filter-btn.active {
    background: var(--primary-purple);
    color: white;
    border-color: var(--primary-purple);
}

/* 商品网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

/* 商品卡片 */
.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
}

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

.product-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    background: var(--bg-light);
}

.product-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.4;
    min-height: 2.8em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-points {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-orange);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
}

.product-points i {
    font-size: 1.2rem;
}

.product-stock {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 5px;
}

.product-stock.out-of-stock {
    color: #e74c3c;
    font-weight: 600;
}

/* ==================== 模态框 ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-dark);
    transition: var(--transition);
    z-index: 1;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: rotate(90deg);
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding: 30px;
}

.modal-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-light);
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.modal-product-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
}

.modal-category,
.modal-points,
.modal-stock {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

.modal-category i,
.modal-points i,
.modal-stock i {
    font-size: 1.3rem;
    color: var(--primary-purple);
}

.modal-points {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-orange);
}

.modal-description {
    padding-top: 15px;
    border-top: 2px solid var(--border-light);
    color: var(--text-gray);
    line-height: 1.6;
}

/* ==================== 管理员控制面板 ==================== */
.admin-panel {
    background: linear-gradient(135deg, var(--bg-white) 0%, rgba(231, 76, 60, 0.1) 100%);
    border-radius: var(--radius-xl);
    padding: 35px 30px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 30px;
    border-left: 5px solid #e74c3c;
}

.admin-panel .section-title {
    color: #e74c3c;
}

.admin-panel .section-title i {
    color: #e74c3c;
}

/* 数据统计 */
.data-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.stat-item i {
    font-size: 2rem;
    color: #e74c3c;
}

.stat-item > div {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-gray);
    font-weight: 500;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
}

.admin-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.admin-control-item {
    background: var(--bg-white);
    padding: 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.admin-control-item h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.admin-control-item h3 i {
    color: #e74c3c;
}

.control-desc {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.admin-btn {
    padding: 10px 20px;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.admin-btn:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.file-name {
    display: inline-block;
    margin-left: 10px;
    color: var(--primary-green);
    font-weight: 600;
}

.admin-indicator {
    margin-left: auto;
    font-size: 1rem;
    color: #e74c3c;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* 管理员编辑区域 */
.admin-edit-section {
    margin-top: 25px;
    padding-top: 25px;
    border-top: 2px solid var(--border-light);
}

.admin-edit-section h4 {
    font-size: 1.3rem;
    color: #e74c3c;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 编辑表单 */
.edit-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-group label i {
    color: var(--primary-purple);
    font-size: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-input {
    padding: 10px 14px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(155, 89, 182, 0.1);
}

.form-textarea {
    padding: 10px 14px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(155, 89, 182, 0.1);
}

.stock-control {
    display: flex;
    gap: 10px;
    align-items: center;
}

.stock-btn {
    padding: 8px 15px;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-width: 50px;
}

.stock-btn:hover {
    background: #3a7bc8;
    transform: scale(1.05);
}

.stock-input {
    flex: 1;
    text-align: center;
}

/* 编辑操作按钮 */
.edit-actions {
    display: flex;
    gap: 12px;
}

.save-btn {
    flex: 1;
    padding: 12px 25px;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.save-btn:hover {
    background: #45a515;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.delete-btn {
    flex: 1;
    padding: 12px 25px;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.delete-btn:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==================== 积分规则模态框 ==================== */
.rules-modal-content {
    max-width: 900px;
}

.rules-modal-body {
    padding: 40px;
}

.rules-title {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.rules-title i {
    font-size: 2.2rem;
    color: var(--primary-blue);
}

.rule-section {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
}

.rule-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.rule-header i {
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.rule-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
}

.rule-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rule-item {
    display: grid;
    grid-template-columns: 150px 1fr auto;
    gap: 15px;
    padding: 15px;
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    align-items: center;
    transition: var(--transition);
}

.rule-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.rule-item.highlight {
    background: linear-gradient(135deg, var(--light-green) 0%, var(--bg-white) 100%);
    border-left: 3px solid var(--primary-green);
}

.rule-name {
    font-weight: 700;
    color: var(--text-dark);
    font-size: 1.05rem;
}

.rule-desc {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.5;
}

.rule-points {
    font-weight: 700;
    color: var(--primary-orange);
    font-size: 1.1rem;
    white-space: nowrap;
}

.rules-footer {
    margin-top: 30px;
    padding: 20px;
    background: rgba(74, 144, 226, 0.1);
    border-left: 4px solid var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.rules-footer i {
    color: var(--primary-blue);
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.rules-footer p {
    color: var(--text-dark);
    line-height: 1.8;
}

.rules-notice {
    margin: 20px 0;
    padding: 15px;
    background: rgba(255, 159, 64, 0.1);
    border-left: 4px solid var(--primary-orange);
    border-radius: var(--radius-md);
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.rules-notice i {
    color: var(--primary-orange);
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.rules-notice p {
    color: var(--text-dark);
    line-height: 1.8;
    margin: 0;
    font-size: 0.95rem;
}

/* ==================== 同步数据模态框 ==================== */
.sync-modal-content {
    max-width: 900px;
}

.sync-modal-body {
    padding: 40px;
}

.sync-title {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sync-title i {
    font-size: 2.2rem;
    animation: rotate 2s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.sync-steps {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.sync-step {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-gray);
    margin-bottom: 15px;
    line-height: 1.6;
}

.manage-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--primary-blue);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
}

.manage-link:hover {
    background: #3a7bc8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.code-block {
    position: relative;
    background: #2d2d2d;
    border-radius: var(--radius-md);
    padding: 15px;
    margin-top: 10px;
}

.copy-code-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 6px 12px;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

.copy-code-btn:hover {
    background: #45a515;
}

.code-block pre {
    color: #f8f8f2;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    overflow-x: auto;
    margin: 0;
    padding-right: 100px;
}

.sync-input {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    resize: vertical;
    transition: var(--transition);
}

.sync-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.import-btn {
    margin-top: 15px;
    padding: 12px 30px;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.import-btn:hover {
    background: #45a515;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.sync-tip {
    margin-top: 25px;
    padding: 15px;
    background: rgba(74, 144, 226, 0.1);
    border-left: 4px solid var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.sync-tip i {
    color: var(--primary-blue);
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.sync-tip div {
    color: var(--text-dark);
    line-height: 1.6;
}

/* ==================== 页脚 ==================== */
.footer {
    text-align: center;
    padding: 25px 20px;
    color: white;
    font-size: 0.95rem;
    margin-top: 20px;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .site-title {
        font-size: 1.5rem;
    }

    .query-form {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }

    .modal-body {
        grid-template-columns: 1fr;
    }

    .category-filter {
        justify-content: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .admin-controls {
        grid-template-columns: 1fr;
    }

    .edit-actions {
        flex-direction: column;
    }

    .stock-control {
        flex-wrap: wrap;
    }

    .sync-modal-body {
        padding: 25px;
    }

    .sync-title {
        font-size: 1.5rem;
    }

    .sync-step {
        flex-direction: column;
        align-items: flex-start;
    }

    .code-block pre {
        font-size: 0.8rem;
        padding-right: 10px;
    }

    .rules-modal-body {
        padding: 25px;
    }

    .rules-title {
        font-size: 1.5rem;
    }

    .rule-item {
        grid-template-columns: 1fr;
        gap: 8px;
        text-align: center;
    }

    .rule-name {
        font-size: 1rem;
    }

    .header-actions {
        flex-direction: column;
        width: 100%;
    }

    .back-btn,
    .rules-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .product-card {
        padding: 12px;
    }

    .product-name {
        font-size: 0.9rem;
    }

    .product-points {
        font-size: 1.1rem;
    }
}