/* SJTU Campus Marketplace - Custom CSS */

/* 全局样式 */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* 页面布局 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
}

.min-vh-100 {
    min-height: 100vh;
}

/* 导航栏样式 */
.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: rgba(255, 255, 255, 0.85) !important;
}

/* 语言切换按钮样式 */
#languageDropdown {
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.375rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
    background-color: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

#languageDropdown:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

#languageDropdown::after {
    margin-left: 0.5rem;
}

.dropdown-item.active {
    background-color: var(--primary-color);
    color: white;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: var(--border-radius);
    transition: box-shadow 0.25s ease;
}

.card.shadow-sm {
    box-shadow: var(--box-shadow);
}

.card:hover {
    box-shadow: var(--box-shadow-lg);
}

/* 商品卡片样式 */
.item-card {
    transition: box-shadow 0.25s ease;
    cursor: pointer;
    overflow: hidden;
}

.item-card:hover {
    /* 移除位移以减少视觉抖动，仅保留阴影 */
    transform: none;
    box-shadow: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.15);
}

.item-image {
    height: 200px;
    width: 100%;
    object-fit: cover;
    object-position: center;
    /* 避免页面切换时的缩放闪烁：去掉 transform 过渡并固定合成层 */
    transition: none;
    display: block;
    backface-visibility: hidden;
    transform: translateZ(0);
    border-top-left-radius: var(--border-radius);
    border-top-right-radius: var(--border-radius);
}

/* 避免行内图片基线间隙造成的抖动 */
.card-img-top { display: block; }

/* 收藏按钮样式 */
.card-left-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 9px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    z-index: 10;
    color: #fff;
}

.card-left-action i {
    font-size: 15px;
    line-height: 1;
}

.card-left-action:hover {
    transform: scale(1.08);
}

.card-left-action:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.65);
    outline-offset: 2px;
}

.favorite-btn {
    background: rgba(13, 110, 253, 0.85);
}

.favorite-btn:hover {
    background: rgba(13, 110, 253, 1);
}

.favorite-btn-guest {
    background: rgba(0, 0, 0, 0.35);
    cursor: default;
}

.favorite-btn-guest:hover {
    transform: none;
}

.add-to-list-btn {
    background: rgba(25, 135, 84, 0.85);
}

.add-to-list-btn:hover {
    background: rgba(25, 135, 84, 1);
}

.remove-from-list-btn {
    background: rgba(220, 53, 69, 0.9);
}

.remove-from-list-btn:hover {
    background: #dc3545;
}

/* 徽章样式 */
.badge {
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background-color: var(--success-color) !important;
}

.badge-warning {
    background-color: var(--warning-color) !important;
    color: var(--dark-color) !important;
}

.badge-danger {
    background-color: var(--danger-color) !important;
}

.badge-secondary {
    background-color: var(--secondary-color) !important;
}

/* 按钮样式 */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

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

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

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

/* 表单样式 */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 1px solid #dee2e6;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* 分页样式 */
.pagination .page-link {
    color: var(--primary-color);
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    margin: 0 2px;
    transition: all 0.3s ease;
}

.pagination .page-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* 警告框样式 */
.alert {
    border: none;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-success {
    background-color: #d1e7dd;
    border-left-color: var(--success-color);
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    border-left-color: var(--danger-color);
    color: #842029;
}

.alert-warning {
    background-color: #fff3cd;
    border-left-color: var(--warning-color);
    color: #664d03;
}

.alert-info {
    background-color: #cff4fc;
    border-left-color: var(--info-color);
    color: #055160;
}

/* 页脚样式 */
footer {
    background-color: var(--light-color) !important;
    border-top: 1px solid #dee2e6;
}

footer a {
    color: var(--secondary-color);
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--primary-color);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 商品详情页样式 */
.product-image {
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.image-thumbnail {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

.image-thumbnail:hover {
    transform: scale(1.1);
}

.image-thumbnail.active {
    border: 2px solid var(--primary-color);
}

/* 清单卡片统一尺寸与布局 */
.list-card,
.list-card.card,
.list-card-new {
    min-height: 180px !important; /* 统一高度 */
    height: 180px; /* 固定高度 */
}

/* 清单网格（可折叠/展开） */
.lists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.75rem;
    margin-left: -12px;  /* Align with Bootstrap row */
    margin-right: -12px; /* Align with Bootstrap row */
    padding-left: 12px;
    padding-right: 12px;
}
.lists-grid.collapsed {
    /* 显示一行: 180px卡片 + 顶/底内边距(4px/8px) => 196px */
    max-height: 196px;
    overflow: hidden;
    padding-top: 4px;
    padding-bottom: 8px;
}
.lists-grid.expanded-2 {
    /* 显示两行: (180*2) + gap(12) + 顶/底内边距(12) => 392px */
    max-height: 392px;
    overflow: hidden;
    padding-top: 4px;
    padding-bottom: 8px;
}
.lists-grid.expanded-3 {
    /* 显示三行: (180*3) + gaps(24) + 顶/底内边距(12) => 588px */
    max-height: 588px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 12px;
    padding-top: 4px;
    padding-bottom: 8px;
}
.list-card .card-body {
    padding: 0.5rem !important;
    display: flex;
    flex-direction: column;
}
/* 统一标题高度为两行，超出省略，确保卡片等高 */
.list-card .card-body .list-title {
    min-height: 2.5em; /* ~2行高度（1.25em x 2） */
    line-height: 1.25em;
    font-weight: 600;
    overflow: hidden;
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
    .list-card .card-body .list-items-line {
         margin-top: 2px;
         font-size: 0.85rem;
         color: #6c757d;
         white-space: nowrap;
         overflow: hidden;
         text-overflow: ellipsis;
    }
.list-card .card-body .list-footer {
    margin-top: auto;
    font-size: 0.875rem;
}

/* 统计卡片样式 */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
}

.stats-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* 搜索框样式 */
.search-box .input-group-text {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .item-card {
        margin-bottom: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .stats-card h3 {
        font-size: 2rem;
    }
    
    .btn {
        font-size: 0.875rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
    }
    
    .stats-card {
        padding: 1rem;
    }
    
    .stats-card h3 {
        font-size: 1.75rem;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* 图片查看器样式 */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-viewer img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

.image-viewer .close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10000;
}

/* 文本截断 */
.text-truncate-2 {
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.text-truncate-3 {
    display: -webkit-box;
    line-clamp: 3;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 价格显示样式 */
.price-display {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-range {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--success-color);
}

/* 状态指示器 */
.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
}

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

.status-sold {
    background-color: var(--warning-color);
}

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

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* 工具提示样式 */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background-color: var(--dark-color);
    color: white;
    border-radius: var(--border-radius);
}

/* 图片预览样式 */
.image-preview-item {
    transition: all 0.3s ease;
    position: relative;
}

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

.preview-image {
    transition: transform 0.2s ease;
}

.preview-image:hover {
    transform: scale(1.05);
}

/* Custom file input styling */
.custom-file-input-container {
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
}

.custom-file-input-container button {
    transition: all 0.2s ease;
}

.custom-file-input-container button:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Image grid responsive layout */
#imagePreviewList .col-lg-2,
#imagePreviewList .col-md-3,
#imagePreviewList .col-sm-4,
#imagePreviewList .col-6,
#allImagesList .col-lg-2,
#allImagesList .col-md-3,
#allImagesList .col-sm-4,
#allImagesList .col-6 {
    margin-bottom: 1rem;
}

/* Drag handle styling */
.drag-handle {
    cursor: grab;
    transition: background-color 0.2s ease;
    background-color: rgba(0, 123, 255, 0.1);
    border: 1px dashed rgba(0, 123, 255, 0.2);
    border-radius: 4px;
}

.drag-handle:hover {
    background-color: rgba(0, 123, 255, 0.2);
    border-color: rgba(0, 123, 255, 0.4);
}

.drag-handle:active {
    cursor: grabbing;
    background-color: rgba(0, 123, 255, 0.3);
}

/* Drag and drop styling */
.image-preview-container[draggable="true"],
.existing-image[draggable="true"],
.new-image[draggable="true"] {
    transition: opacity 0.2s ease, transform 0.2s ease;
    user-select: none;
}

.image-preview-container[draggable="true"]:hover,
.existing-image[draggable="true"]:hover,
.new-image[draggable="true"]:hover {
    opacity: 0.9;
    transform: scale(1.01);
}

/* Dragging state */
.image-preview-container.dragging,
.existing-image.dragging,
.new-image.dragging {
    opacity: 0.6;
    transform: scale(1.1);
    z-index: 1000;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* Drop zone styling */
.image-preview-container.drop-target,
.existing-image.drop-target,
.new-image.drop-target {
    border: 3px dashed #28a745 !important;
    background-color: rgba(40, 167, 69, 0.2);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
    transition: all 0.2s ease;
}

/* Prevent text selection during drag, but allow button clicks */
.image-preview-container.dragging *,
.existing-image.dragging *,
.new-image.dragging * {
    pointer-events: none;
}

/* Ensure buttons and clickable elements work */
.image-preview-container button,
.existing-image button,
.new-image button,
.image-preview-container img,
.existing-image img,
.new-image img {
    pointer-events: auto;
}

/* Modal image styling */
#imageModal .modal-body {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.9);
}

#modalImage {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
}

/* Badge styling for existing/new images */
.badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
}

/* Button positioning in image preview */
.image-preview-item .btn-danger {
    width: 24px;
    height: 24px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

/* 防止浏览器默认密码可见性切换 */
input[type="password"]::-webkit-outer-spin-button,
input[type="password"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="password"]::-webkit-textfield-decoration-container {
    display: none !important;
}

input[type="password"]::-webkit-credentials-auto-fill-button {
    display: none !important;
}

/* 移除Edge/IE的密码显示按钮 */
input[type="password"]::-ms-reveal {
    display: none;
}

/* 移除Firefox的密码显示按钮 */
input[type="password"] {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: textfield;
}

/* 确保自定义密码切换按钮正确显示 */
.input-group .btn-outline-secondary {
    border-left: 0;
    z-index: 3;
}