/* AI学堂 - 双栏布局 + 视频卡片网格 */

.al-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 0;
    min-height: 100%;
}

/* ===== 侧栏 ===== */
.al-sidebar {
    border-right: 1px solid var(--card-border, rgba(255,255,255,0.08));
    padding: 16px 0;
    overflow-y: auto;
    max-height: calc(100vh - 120px);
}

.al-sidebar-section {
    margin-bottom: 20px;
}

.al-sidebar-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary, rgba(255,255,255,0.5));
    padding: 4px 16px 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.al-sidebar-item {
    padding: 6px 16px;
    font-size: 13px;
    color: var(--text-secondary, rgba(255,255,255,0.6));
    cursor: pointer;
    transition: all 0.15s;
    border-left: 3px solid transparent;
}

.al-sidebar-item:hover {
    color: var(--text-primary, rgba(255,255,255,0.9));
    background: var(--card-hover-bg, rgba(255,255,255,0.05));
}

.al-sidebar-item.active {
    color: var(--primary-color, #3b82f6);
    border-left-color: var(--primary-color, #3b82f6);
    background: var(--card-hover-bg, rgba(255,255,255,0.05));
    font-weight: 500;
}

/* 难度色标 */
.al-diff-入门 { color: #22c55e; }
.al-diff-初级 { color: #3b82f6; }
.al-diff-中级 { color: #f59e0b; }
.al-diff-高级 { color: #ef4444; }
.al-diff-专家 { color: #a855f7; }

/* ===== 主区 ===== */
.al-main {
    padding: 16px 20px;
    overflow-y: auto;
    max-height: calc(100vh - 120px);
}

/* 工具栏 */
.al-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.al-toolbar-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary, #fff);
    margin-right: 8px;
}

.al-search {
    flex: 1;
    min-width: 150px;
    max-width: 280px;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--card-border, rgba(255,255,255,0.1));
    background: var(--input-bg, rgba(255,255,255,0.05));
    color: var(--text-primary, #fff);
    font-size: 13px;
    outline: none;
}

.al-search:focus {
    border-color: var(--primary-color, #3b82f6);
}

/* ===== 采集输入栏 ===== */
.al-collect-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding: 10px 14px;
    background: rgba(0, 212, 255, 0.04);
    border: 1px dashed rgba(0, 212, 255, 0.2);
    border-radius: 8px;
    flex-wrap: wrap;
}

.al-collect-input {
    flex: 1;
    min-width: 200px;
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}

.al-collect-input:focus {
    border-color: rgba(0, 212, 255, 0.5);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.1);
}

.al-collect-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.al-btn-collect {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 212, 255, 0.3));
    color: #00d4ff;
    border: 1px solid rgba(0, 212, 255, 0.3);
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.al-btn-collect:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.3), rgba(0, 212, 255, 0.4));
    transform: translateY(-1px);
}

.al-btn-collect:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.al-collect-progress {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    margin-top: 4px;
}

.al-progress-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.al-progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    overflow: hidden;
}

.al-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.al-progress-text {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
    white-space: nowrap;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.al-progress-pct {
    font-size: 11px;
    color: #00d4ff;
    font-weight: 600;
    min-width: 30px;
    text-align: right;
}
}

.al-sort {
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--card-border, rgba(255,255,255,0.1));
    background: var(--input-bg, rgba(255,255,255,0.05));
    color: var(--text-primary, #fff);
    font-size: 13px;
    outline: none;
    cursor: pointer;
}

.al-btn {
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--card-border, rgba(255,255,255,0.1));
    background: var(--card-bg, rgba(255,255,255,0.05));
    color: var(--text-secondary, rgba(255,255,255,0.7));
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}

.al-btn:hover {
    background: var(--card-hover-bg, rgba(255,255,255,0.1));
    color: var(--text-primary, #fff);
}

.al-btn-primary {
    background: var(--primary-color, #3b82f6);
    color: #fff;
    border-color: transparent;
}

.al-btn-primary:hover {
    background: var(--primary-color-dark, #2563eb);
}

.al-btn-block {
    display: block;
    width: 100%;
    text-align: center;
    margin-top: 16px;
    padding: 10px;
}

.al-btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

/* 统计行 */
.al-stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.al-stat-card {
    background: var(--card-bg, rgba(255,255,255,0.05));
    border: 1px solid var(--card-border, rgba(255,255,255,0.08));
    border-radius: 8px;
    padding: 10px 14px;
    text-align: center;
}

.al-stat-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary, #fff);
}

.al-stat-label {
    font-size: 12px;
    color: var(--text-tertiary, rgba(255,255,255,0.4));
    margin-top: 2px;
}

/* 视频网格 */
.al-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}

.al-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: var(--text-tertiary, rgba(255,255,255,0.3));
    font-size: 14px;
}

/* 视频卡片 */
.al-card {
    background: var(--card-bg, rgba(255,255,255,0.05));
    border: 1px solid var(--card-border, rgba(255,255,255,0.08));
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.2s;
}

.al-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary-color, #3b82f6);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.al-card-notai {
    opacity: 0.5;
}

.al-card-cover {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: var(--input-bg, rgba(255,255,255,0.03));
    overflow: hidden;
}

.al-card-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.al-card-no-cover {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-tertiary, rgba(255,255,255,0.2));
    font-size: 13px;
}

.al-card-duration {
    position: absolute;
    bottom: 6px;
    right: 6px;
    background: rgba(0,0,0,0.75);
    color: #fff;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
}

.al-card-info {
    padding: 10px 12px;
}

.al-card-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary, #fff);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 6px;
}

.al-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 6px;
}

.al-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    background: var(--card-bg, rgba(255,255,255,0.08));
    color: var(--text-secondary, rgba(255,255,255,0.6));
}

.al-tag-difficulty {
    font-weight: 600;
}

.al-tag-tech {
    background: rgba(59,130,246,0.15);
    color: #60a5fa;
}

.al-tag-quality {
    background: rgba(234,179,8,0.15);
    color: #fbbf24;
}

.al-tag-notai {
    background: rgba(107,114,128,0.2);
    color: #9ca3af;
}

.al-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-tertiary, rgba(255,255,255,0.4));
}

.al-card-quality {
    color: #fbbf24;
    font-weight: 600;
}

.al-card-blogger {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== 详情弹窗 ===== */
.al-detail {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 20px;
}

.al-detail-left {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.al-detail-cover {
    width: 100%;
    border-radius: 8px;
    object-fit: cover;
}

.al-detail-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary, #fff);
    line-height: 1.4;
}

.al-detail-stats {
    font-size: 13px;
    color: var(--text-tertiary, rgba(255,255,255,0.5));
}

.al-detail-stats span {
    margin-right: 4px;
}

.al-detail-right {
    min-width: 0;
}

.al-detail-no-analysis {
    text-align: center;
    padding: 30px;
    color: var(--text-tertiary, rgba(255,255,255,0.4));
    font-size: 14px;
}

/* AI分析区 */
.al-analysis {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.al-analysis-summary {
    font-size: 14px;
    color: var(--text-secondary, rgba(255,255,255,0.7));
    line-height: 1.5;
    padding: 10px 14px;
    background: var(--card-bg, rgba(255,255,255,0.05));
    border-radius: 8px;
    border-left: 3px solid var(--primary-color, #3b82f6);
}

.al-analysis-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.al-analysis-dims {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.al-dim-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.al-dim-label {
    font-size: 12px;
    color: var(--text-tertiary, rgba(255,255,255,0.5));
    width: 48px;
    flex-shrink: 0;
}

.al-dim-bar {
    flex: 1;
    height: 6px;
    background: var(--input-bg, rgba(255,255,255,0.1));
    border-radius: 3px;
    overflow: hidden;
}

.al-dim-fill {
    height: 100%;
    background: var(--primary-color, #3b82f6);
    border-radius: 3px;
    transition: width 0.3s;
}

.al-dim-val {
    font-size: 12px;
    color: var(--text-secondary, rgba(255,255,255,0.6));
    width: 20px;
    text-align: right;
}

.al-analysis-section {
    margin-top: 4px;
}

.al-analysis-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary, rgba(255,255,255,0.7));
    margin-bottom: 6px;
}

.al-analysis-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.al-analysis-list {
    margin: 0;
    padding-left: 18px;
    font-size: 13px;
    color: var(--text-secondary, rgba(255,255,255,0.7));
    line-height: 1.6;
}

.al-analysis-sub {
    font-size: 13px;
    color: var(--text-tertiary, rgba(255,255,255,0.5));
    margin-bottom: 2px;
}

/* 转录区 */
.al-detail-transcript {
    margin-top: 16px;
    border-top: 1px solid var(--card-border, rgba(255,255,255,0.08));
    padding-top: 12px;
}

.al-detail-transcript-content {
    margin-top: 8px;
    padding: 12px;
    background: var(--input-bg, rgba(255,255,255,0.03));
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary, rgba(255,255,255,0.7));
    line-height: 1.6;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* 加载状态 */
.al-loading {
    text-align: center;
    padding: 40px;
    color: var(--text-tertiary, rgba(255,255,255,0.4));
    font-size: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .al-layout {
        grid-template-columns: 1fr;
    }

    .al-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--card-border, rgba(255,255,255,0.08));
        max-height: none;
        display: flex;
        overflow-x: auto;
        padding: 12px 16px;
        gap: 8px;
    }

    .al-sidebar-section {
        margin-bottom: 0;
        display: flex;
        gap: 6px;
        align-items: center;
    }

    .al-sidebar-title {
        padding: 4px 8px;
        white-space: nowrap;
    }

    .al-sidebar-item {
        padding: 4px 10px;
        border-left: none;
        border-radius: 14px;
        white-space: nowrap;
        font-size: 12px;
    }

    .al-sidebar-item.active {
        border-left: none;
        background: var(--primary-color, #3b82f6);
        color: #fff;
    }

    .al-detail {
        grid-template-columns: 1fr;
    }

    .al-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 10px;
    }
}

/* ===== 图文帖子详情 ===== */
.al-detail-images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
    margin-bottom: 12px;
}
.al-detail-img {
    width: 100%;
    border-radius: 8px;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.2s;
}
.al-detail-img:hover {
    transform: scale(1.03);
}
.al-detail-desc {
    background: var(--card-bg, rgba(255,255,255,0.05));
    border-radius: 8px;
    border: 1px solid var(--card-border, rgba(255,255,255,0.08));
}

/* ===== 卡片类型标记 ===== */
.al-card-no-cover {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    color: var(--text-tertiary, #888);
    font-size: 13px;
}

/* ===== 等级标签 ===== */
.al-card-grade {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    margin-right: 4px;
    line-height: 1;
}
.al-grade-S { background: #FFD700; color: #1a1a2e; }
.al-grade-A { background: #4A90D9; color: #fff; }
.al-grade-B { background: #50C878; color: #fff; }
.al-grade-C { background: #A0A0A0; color: #fff; }
.al-grade-D { background: #CD5C5C; color: #fff; }

/* ===== 等级分布条 ===== */
.al-grade-bar {
    display: flex;
    height: 24px;
    border-radius: 4px;
    overflow: hidden;
    flex: 1;
    min-width: 200px;
    margin-left: 8px;
    background: rgba(255,255,255,0.05);
}
.al-grade-seg {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    color: rgba(0,0,0,0.7);
    cursor: default;
    transition: opacity 0.2s;
}
.al-grade-seg:hover { opacity: 0.8; }

/* ===== 雷达图容器 ===== */
.al-radar-wrap {
    display: flex;
    justify-content: center;
    padding: 8px 0;
    margin: 8px 0;
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
}

/* ===== 3D星云提示框 ===== */
.al-nebula-tooltip {
    position: absolute;
    background: rgba(10,10,30,0.92);
    color: #eee;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    pointer-events: none;
    z-index: 100;
    border: 1px solid rgba(255,255,255,0.15);
    max-width: 280px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== 可视化模式切换器 ===== */
.al-viz-switcher {
    display: flex;
    border: 1px solid var(--card-border, rgba(255,255,255,0.15));
    border-radius: 6px;
    overflow: hidden;
}
.al-viz-btn {
    padding: 5px 12px;
    font-size: 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-right: 1px solid var(--card-border, rgba(255,255,255,0.08));
    transition: all 0.15s;
    white-space: nowrap;
}
.al-viz-btn:last-child { border-right: none; }
.al-viz-btn:hover { background: rgba(255,255,255,0.06); }
.al-viz-btn.active {
    background: var(--primary-color, #3b82f6);
    color: #fff;
}

/* ===== 概念详情面板 ===== */
.al-concept-panel {
    position: absolute;
    right: 20px;
    top: 60px;
    width: 320px;
    max-height: 70vh;
    background: rgba(10,10,30,0.95);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    overflow-y: auto;
    z-index: 50;
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

/* ==================== 批量蒸馏面板 ==================== */
.al-distill-panel {
    margin: 0 16px 8px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    background: rgba(255,255,255,0.03);
    overflow: hidden;
}
.al-distill-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
}
.al-distill-header:hover { background: rgba(255,255,255,0.03); }
.al-distill-toggle {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    width: 14px;
}
.al-distill-title {
    font-weight: 600;
    font-size: 14px;
    color: rgba(255,255,255,0.9);
    margin-right: auto;
}
.al-distill-select {
    padding: 5px 10px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(0,0,0,0.3);
    color: rgba(255,255,255,0.9);
    font-size: 12px;
}
.al-distill-body {
    padding: 0 14px 14px;
}
.al-distill-scan { margin-bottom: 10px; }
.al-distill-scan-grid {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.al-distill-scan-item {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}
.al-distill-scan-num {
    font-weight: 700;
    font-size: 18px;
    color: #00d4ff;
    margin-right: 4px;
}
.al-distill-scan-total {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    margin-top: 6px;
}
.al-distill-warn { color: #ff6b6b; font-size: 13px; }
.al-distill-ok { color: #50C878; font-size: 13px; }
.al-distill-loading { color: rgba(255,255,255,0.5); font-size: 13px; }
.al-distill-progress {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
}
.al-distill-phase-row {
    display: flex;
    align-items: center;
    gap: 10px;
}
.al-distill-phase-label {
    min-width: 140px;
    font-size: 12px;
    color: rgba(255,255,255,0.6);
}
.al-distill-bar {
    flex: 1;
    height: 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
    overflow: hidden;
}
.al-distill-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #4A90D9, #50C878);
    border-radius: 3px;
    transition: width 0.3s ease;
}
.al-distill-stats {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    min-width: 180px;
    text-align: right;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.al-distill-msg {
    margin-top: 8px;
    font-size: 13px;
    min-height: 18px;
}