/* ==========================================
   素材库页面 - Apple风格三层结构
   ========================================== */

/* Hero Section - 黑色背景 */
.history-hero {
    background: var(--color-black);
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px 40px;
    text-align: center;
}

.history-hero-title {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 600;
    line-height: 1.1;
    color: var(--text-white);
    margin-bottom: 8px;
}

.history-hero-subtitle {
    font-family: var(--font-display);
    font-size: 17px;
    color: var(--text-white);
    opacity: 0.8;
}

/* 主内容区 - 浅灰背景 */
.history-main {
    background: var(--color-light-gray);
    padding: 40px 20px 80px;
    min-height: 70vh;
}

.history-content {
    max-width: 980px;
    margin: 0 auto;
}

/* ========== 登录区域 ========== */

.login-section {
    display: flex;
    justify-content: center;
}

.login-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-title {
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.login-input {
    font-family: var(--font-text);
    font-size: 17px;
    color: var(--text-primary);
    width: 100%;
    padding: 14px 16px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-light-gray);
    outline: none;
    margin-bottom: 16px;
}

.login-input:focus {
    box-shadow: 0 0 0 2px var(--color-apple-blue);
}

.login-btn {
    font-family: var(--font-text);
    font-size: 17px;
    color: var(--text-white);
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    background: var(--color-apple-blue);
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}

.login-btn:hover {
    background: #0077ed;
}

/* ========== 素材库内容区 ========== */

.library-section {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 0;
    overflow: hidden;
}

/* 面包屑导航 */
.breadcrumb-nav {
    padding: 16px 24px;
    background: var(--color-near-black);
    display: flex;
    align-items: center;
}

.breadcrumb-item {
    font-family: var(--font-text);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: color 0.2s;
}

.breadcrumb-item:hover {
    color: var(--color-link-dark);
}

.breadcrumb-item.active {
    color: var(--text-white);
    font-weight: 600;
    cursor: default;
}

.breadcrumb-sep {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 12px;
}

/* 层级内容 */
.library-level {
    padding: 24px;
}

/* ========== 第一层：公司文件夹 ========== */

.folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
}

.folder-card {
    background: var(--color-light-gray);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.folder-card:hover {
    background: rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.folder-icon-large {
    font-size: 48px;
}

.folder-info {
    text-align: center;
}

.folder-name {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

.folder-count {
    font-family: var(--font-text);
    font-size: 12px;
    color: var(--text-tertiary);
}

.no-data {
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--text-tertiary);
    text-align: center;
    padding: 40px;
}

/* ========== 第二层：产品条目 ========== */

.product-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-row {
    display: flex;
    align-items: center;
    padding: 20px 24px;
    background: var(--color-light-gray);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.2s;
}

.product-row:hover {
    background: rgba(0, 0, 0, 0.1);
}

.product-icon {
    font-size: 28px;
    margin-right: 16px;
}

.product-info {
    flex: 1;
}

.product-name {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

.product-meta {
    font-family: var(--font-text);
    font-size: 12px;
    color: var(--text-tertiary);
}

.product-arrow {
    font-size: 24px;
    color: var(--text-tertiary);
}

/* ========== 第三层：产品详情 ========== */

.product-detail-card {
    background: var(--color-light-gray);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.detail-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
}

.detail-scheme-badge {
    font-family: var(--font-text);
    font-size: 12px;
    padding: 6px 12px;
    background: var(--color-apple-blue);
    color: var(--text-white);
    border-radius: var(--radius-sm);
}

.detail-section {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

/* 卖点列表 */
.points-list {
    list-style: none;
    padding: 0;
}

.points-list li {
    font-family: var(--font-text);
    font-size: 15px;
    color: var(--text-secondary);
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.points-list li:last-child {
    border-bottom: none;
}

.points-list .no-points {
    color: var(--text-tertiary);
    text-align: center;
    padding: 20px;
}

/* 图片网格 */
.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}

.detail-thumb {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-sm);
    background: var(--color-light-gray);
    overflow: hidden;
    position: relative;
}

.detail-thumb.clickable {
    cursor: pointer;
    transition: transform 0.2s;
}

.detail-thumb.clickable:hover {
    transform: scale(1.05);
}

.detail-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.thumb-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: var(--text-white);
    font-family: var(--font-text);
    font-size: 10px;
    padding: 4px 8px;
    text-align: center;
}

.no-images {
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--text-tertiary);
    text-align: center;
    padding: 20px;
}

/* 生成历史 */
.gen-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gen-record {
    padding: 16px;
    background: var(--color-light-gray);
    border-radius: var(--radius-sm);
}

.gen-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.gen-date {
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--text-primary);
}

.gen-scheme {
    font-family: var(--font-text);
    font-size: 12px;
    padding: 4px 8px;
    background: rgba(0, 113, 227, 0.2);
    color: var(--color-apple-blue);
    border-radius: var(--radius-sm);
}

.gen-images {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.gen-thumb {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-sm);
    background: var(--color-white);
    overflow: hidden;
    position: relative;
}

.gen-thumb.clickable {
    cursor: pointer;
    transition: transform 0.2s;
}

.gen-thumb.clickable:hover {
    transform: scale(1.1);
}

.gen-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gen-thumb.stitched {
    border: 2px solid var(--color-apple-blue);
}

.gen-thumb .badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--color-apple-blue);
    color: var(--text-white);
    font-size: 10px;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.gen-thumb .badge.saved {
    background: #34c759;
}

.no-gen {
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--text-tertiary);
    text-align: center;
    padding: 20px;
}

/* 继续创作按钮 */
.detail-actions-bar {
    padding: 20px 24px;
    background: var(--color-white);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.continue-btn {
    font-family: var(--font-text);
    font-size: 17px;
    color: var(--text-white);
    width: 100%;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    background: var(--color-apple-blue);
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}

.continue-btn:hover {
    background: #0077ed;
}

/* ========== 空状态 ========== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    text-align: center;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 24px;
}

.empty-text {
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-link {
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--color-apple-blue);
    text-decoration: none;
}

.empty-link:hover {
    text-decoration: underline;
}

/* ========== 加载提示 ========== */

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--color-apple-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 16px;
}

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

.loading-text {
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--text-tertiary);
}

/* ========== 响应式 ========== */

@media (max-width: 768px) {
    .folder-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .folder-icon-large {
        font-size: 36px;
    }

    .images-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .detail-thumb {
        width: 100px;
        height: 100px;
    }

    .gen-thumb {
        width: 60px;
        height: 60px;
    }
}

@media (max-width: 480px) {
    .history-hero-title {
        font-size: 28px;
    }

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

    .login-card {
        padding: 24px;
    }
}

/* ========== 产品生成历史卡片 ========== */

.product-history-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.product-history-card {
    background: var(--color-light-gray);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.product-header .product-name {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.gen-count {
    font-family: var(--font-text);
    font-size: 12px;
    color: var(--text-tertiary);
}

.generations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}

.generation-item {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s;
}

.generation-item:hover {
    transform: scale(1.05);
}

.generation-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.gen-info {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.gen-date {
    font-family: var(--font-text);
    font-size: 12px;
    color: var(--text-primary);
}

.gen-time {
    font-family: var(--font-text);
    font-size: 10px;
    color: var(--text-tertiary);
}

.gen-scheme {
    font-family: var(--font-text);
    font-size: 10px;
    color: var(--color-apple-blue);
    background: rgba(0, 113, 227, 0.1);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin-top: 4px;
}

.product-actions {
    margin-top: 16px;
    display: flex;
    justify-content: flex-end;
}

.product-actions .continue-btn {
    font-family: var(--font-text);
    font-size: 14px;
    color: var(--text-white);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    background: var(--color-apple-blue);
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}

.product-actions .continue-btn:hover {
    background: #0077ed;
}

/* ========== 批量操作栏 ========== */

.batch-actions-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--color-near-black);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: 12px;
}

.batch-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.batch-checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-family: var(--font-text);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    user-select: none;
}

.batch-checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--color-apple-blue);
}

.batch-count {
    font-family: var(--font-text);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
}

.batch-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.batch-download-btn {
    font-family: var(--font-text);
    font-size: 13px;
    color: var(--text-white);
    padding: 8px 18px;
    border-radius: var(--radius-md);
    background: var(--color-apple-blue);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.batch-download-btn:hover:not(:disabled) {
    background: #0077ed;
}

.batch-download-btn:disabled {
    background: #999;
    cursor: not-allowed;
    opacity: 0.6;
}

/* ========== 批量下载进度条 ========== */

.batch-progress-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    background: var(--color-near-black);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.batch-progress-track {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
    overflow: hidden;
}

.batch-progress-fill {
    height: 100%;
    background: var(--color-apple-blue);
    border-radius: 2px;
    width: 0%;
    transition: width 0.3s ease;
}

.batch-progress-text {
    font-family: var(--font-text);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.8);
    white-space: nowrap;
    min-width: 120px;
    text-align: right;
}

/* ========== 缩略图复选框 ========== */

.gen-thumb {
    position: relative;
}

.gen-thumb-checkbox {
    position: absolute;
    top: 4px;
    left: 4px;
    z-index: 5;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.gen-thumb-checkbox:hover {
    background: rgba(255, 255, 255, 1);
}

.gen-thumb-checkbox input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: var(--color-apple-blue);
    margin: 0;
}

/* 选中状态高亮 */
.gen-thumb.selected {
    outline: 2px solid var(--color-apple-blue);
    outline-offset: -2px;
}

/* ========== 批次"全选本批"按钮 ========== */

.gen-select-all-btn {
    font-family: var(--font-text);
    font-size: 12px;
    padding: 4px 12px;
    border: 1px solid #d1d1d6;
    border-radius: 4px;
    background: var(--color-white);
    color: var(--color-apple-blue);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.gen-select-all-btn:hover {
    background: rgba(0, 113, 227, 0.08);
    border-color: var(--color-apple-blue);
}

.gen-select-all-btn.active {
    background: var(--color-apple-blue);
    color: var(--text-white);
    border-color: var(--color-apple-blue);
}

.gen-select-all-btn.active:hover {
    background: #0077ed;
}