/* 莫兰迪色系变量 */
:root {
    --primary-color: #9BA8AB;
    --primary-dark: #8A9699;
    --primary-light: #B5C1C4;
    --secondary-color: #C4B7A6;
    --secondary-dark: #B3A695;
    --secondary-light: #D9CEBD;
    --accent-color: #D4A373;
    --accent-dark: #C39262;
    --accent-light: #E6B98B;
    --background-color: #F8F9FA;
    --card-background: #FFFFFF;
    --text-primary: #3D3D3D;
    --text-secondary: #6B6B6B;
    --text-light: #9E9E9E;
    --border-color: #E0E0E0;
    --success-color: #81B29A;
    --warning-color: #F2CC8F;
    --danger-color: #E07A5F;
    --info-color: #9BA8AB;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 6px 12px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s ease;
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    background-color: var(--primary-color);
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
}

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

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

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

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

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

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

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

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: var(--transition);
    background-color: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(155, 168, 171, 0.2);
}

.form-control::placeholder {
    color: var(--text-light);
}

/* 卡片样式 */
.card {
    background-color: var(--card-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

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

.card-header {
    padding: 20px;
    background-color: var(--card-background);
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 15px 20px;
    background-color: var(--card-background);
    border-top: 1px solid var(--border-color);
}

/* 头像样式 */
.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
    background-color: var(--primary-light);
}

.avatar-sm {
    width: 40px;
    height: 40px;
}

.avatar-lg {
    width: 120px;
    height: 120px;
}

/* 仪表盘样式 */
.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.dashboard-item {
    background-color: var(--card-background);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.dashboard-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.dashboard-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.dashboard-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 素材卡片网格 */
.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.material-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.material-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.material-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--background-color);
    cursor: zoom-in;
    transition: opacity .2s ease;
}

.material-image:hover {
    opacity: .88;
}

.material-content {
    padding: 15px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.material-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.material-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.material-fields {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.field-item {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    font-size: 12px;
    line-height: 1.5;
}

.field-label {
    color: var(--text-light);
    font-weight: 600;
    white-space: nowrap;
    min-width: 56px;
    flex-shrink: 0;
}

.field-label::after {
    content: '：';
}

.field-value {
    color: var(--text-secondary);
    word-break: break-all;
}

.material-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 15px;
}

.tag {
    display: inline-block;
    padding: 4px 8px;
    background-color: var(--primary-light);
    color: var(--text-primary);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.material-drive-time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.material-link {
    margin-top: auto;
}

.material-link a {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.material-link a:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

.material-status {
    font-size: 12px;
    margin-bottom: 10px;
    padding: 4px 8px;
    border-radius: 20px;
    display: inline-block;
}

.status-active {
    background-color: rgba(129, 178, 154, 0.2);
    color: var(--success-color);
}

.status-pending {
    background-color: rgba(242, 204, 143, 0.2);
    color: #F39C12;
}

.status-warning {
    background-color: rgba(224, 122, 95, 0.2);
    color: var(--danger-color);
}

/* 用户信息卡片 */
.user-profile {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 30px;
    background-color: var(--card-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    position: relative;
}

.avatar-container {
    position: relative;
    display: inline-block;
}

.avatar-edit-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 30px;
    height: 30px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 2px solid white;
    transition: all 0.3s ease;
    font-size: 14px;
}

.avatar-edit-btn:hover {
    background-color: var(--primary-dark);
    transform: scale(1.1);
}

.user-info {
    flex: 1;
}

.user-name {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.user-qq {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.user-join-date {
    font-size: 12px;
    color: var(--text-light);
}

.user-leave-date {
    font-size: 12px;
    color: var(--danger-color);
    margin-top: 2px;
}

.user-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.user-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.user-tag-batch {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: white;
}

.user-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.admin-note {
    margin-top: 0;
    padding: 3px 10px;
    background: linear-gradient(135deg, var(--accent-light), var(--accent-color));
    border-radius: 20px;
    color: white;
    font-weight: 600;
    font-size: 11px;
    display: inline-block;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.9; transform: scale(1.02); }
}

/* 年份筛选 */
.year-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.year-btn {
    padding: 8px 16px;
    background-color: var(--secondary-light);
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.year-btn:hover {
    background-color: var(--secondary-color);
}

.year-btn.active {
    background-color: var(--primary-color);
    color: white;
}

/* 登录页面 */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 40px;
    background-color: var(--card-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--secondary-color));
}

.login-title {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.logo {
    font-size: 48px;
    margin-bottom: 15px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.login-title h1 {
    font-size: 24px;
    margin-bottom: 10px;
}

.login-title p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 12px;
    text-align: center;
}

/* 管理后台样式 */
.admin-header {
    background-color: var(--card-background);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.admin-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-nav-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

.admin-nav-links {
    display: flex;
    gap: 20px;
}

.admin-nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

.admin-nav-links a:hover {
    color: var(--primary-color);
}

.admin-content {
    padding: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .user-profile {
        flex-direction: column;
        text-align: center;
    }
    
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .materials-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-nav {
        flex-direction: column;
        gap: 15px;
    }
    
    .admin-nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--card-background);
    margin: 10% auto;
    padding: 30px;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-hover);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-close:hover {
    color: var(--danger-color);
}

/* 提示信息 */
.alert {
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background-color: rgba(129, 178, 154, 0.2);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.alert-danger {
    background-color: rgba(224, 122, 95, 0.2);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.alert-warning {
    background-color: rgba(242, 204, 143, 0.2);
    color: var(--warning-color);
    border: 1px solid var(--warning-color);
}

.alert-info {
    background-color: rgba(155, 168, 171, 0.2);
    color: var(--info-color);
    border: 1px solid var(--info-color);
}

/* 加载状态 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.pagination-btn {
    padding: 8px 12px;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.pagination-btn:hover {
    background-color: var(--primary-light);
}

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

/* 表格样式 */
.table-container {
    overflow-x: auto;
    margin-bottom: 20px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-background);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: var(--primary-light);
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1px;
}

.table tr:hover {
    background-color: rgba(155, 168, 171, 0.1);
}

.table-actions {
    display: flex;
    gap: 5px;
}

/* ==================== 图片预览层 ==================== */
.img-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(30, 34, 36, .92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .22s ease;
    /* 移动端禁止背景滚动穿透 */
    overscroll-behavior: contain;
}

.img-lightbox.show {
    opacity: 1;
    pointer-events: auto;
}

.img-lightbox img {
    max-width: 92vw;
    max-height: 92vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, .5);
    transform: scale(.92);
    transition: transform .22s ease, cursor .2s ease;
    cursor: zoom-out;
    background: #fff;
}

.img-lightbox.show img {
    transform: scale(1);
}

/* 双击放大后 */
.img-lightbox img.zoomed {
    max-width: none;
    max-height: none;
    width: auto;
    height: auto;
    cursor: zoom-in;
}

.img-lightbox-close {
    position: absolute;
    top: 20px;
    right: 26px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, .16);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .2s ease;
}

.img-lightbox-close:hover {
    background: rgba(255, 255, 255, .3);
}

.img-lightbox-caption {
    position: absolute;
    bottom: 24px;
    left: 0;
    right: 0;
    text-align: center;
    color: rgba(255, 255, 255, .85);
    font-size: 13px;
    padding: 0 20px;
    pointer-events: none;
}

.img-lightbox-hint {
    position: absolute;
    top: 28px;
    left: 26px;
    color: rgba(255, 255, 255, .6);
    font-size: 12px;
    pointer-events: none;
}

/* 预览打开时锁定页面滚动 */
body.lightbox-open {
    overflow: hidden;
}

/* ==================== 搜索框 ==================== */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    height: 46px;
    margin: 0 0 14px;
    padding: 0 14px;
    background: var(--card-background, #fff);
    border: 1.5px solid var(--border-color, #E0E0E0);
    border-radius: var(--border-radius-lg, 12px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, .03);
    transition: border-color .2s ease, box-shadow .2s ease;
}

.search-box:hover {
    border-color: var(--primary-light, #B5C1C4);
}

.search-box:focus-within {
    border-color: var(--primary-color, #9BA8AB);
    box-shadow: 0 0 0 3px rgba(155, 168, 171, .14), 0 2px 8px rgba(0, 0, 0, .05);
}

/* SVG 的 width/height 已在 HTML 里写成属性，这里做二次约束 + 上色 */
.search-icon {
    width: 18px;
    height: 18px;
    max-width: 18px;
    max-height: 18px;
    flex: none;
    color: var(--primary-color, #9BA8AB);
    opacity: .8;
    transition: opacity .2s ease;
}

.search-box:focus-within .search-icon {
    opacity: 1;
}

.search-input {
    flex: 1;
    min-width: 0;
    height: 100%;
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    color: var(--text-primary, #3D3D3D);
    font-family: inherit;
}

.search-input::placeholder {
    color: var(--text-light, #9E9E9E);
}

/* 去掉 Chrome/Safari 给 type=search 的原生清除按钮，用我们自己的 */
.search-input::-webkit-search-cancel-button {
    -webkit-appearance: none;
    appearance: none;
}

.search-clear {
    flex: none;
    width: 20px;
    height: 20px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--border-color, #E0E0E0);
    color: var(--text-secondary, #6B6B6B);
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .18s ease, color .18s ease, transform .18s ease;
}

.search-clear:hover {
    background: var(--primary-color, #9BA8AB);
    color: #fff;
}

.search-clear:active {
    transform: scale(.92);
}

.search-result-tip {
    margin: -6px 2px 12px;
    font-size: 13px;
    color: var(--text-secondary, #6B6B6B);
}

.search-result-tip b {
    color: var(--primary-dark, #8A9699);
    font-weight: 600;
}

/* 搜索无结果时的空状态 */
.materials-empty {
    grid-column: 1 / -1;
    padding: 48px 20px;
    text-align: center;
    color: var(--text-light, #9E9E9E);
    font-size: 14px;
}

.materials-empty .materials-empty-icon {
    display: block;
    width: 40px;
    height: 40px;
    max-width: 40px;
    max-height: 40px;
    margin: 0 auto 12px;
    color: var(--border-color, #E0E0E0);
}