/* LDA Web 应用自定义样式 */

:root {
    --primary: #2c3e50;
    --accent: #3498db;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --text: #2c3e50;
    --text-muted: #7f8c8d;
    --border: #dee2e6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: #fff;
    padding: 12px 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.app-header h1 {
    font-size: 20px;
    font-weight: 500;
    margin: 0;
}

.app-header .subtitle {
    font-size: 13px;
    opacity: 0.8;
}

/* Status bar */
.status-bar {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 8px 24px;
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-bar .status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-bar .status-indicator.idle { background: #95a5a6; }
.status-bar .status-indicator.running { background: var(--warning); animation: pulse 1s infinite; }
.status-bar .status-indicator.success { background: var(--success); }
.status-bar .status-indicator.error { background: var(--danger); }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Main content area */
.main-content {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Cards */
.card-custom {
    background: var(--card-bg);
    border-radius: 10px;
    border: 1px solid var(--border);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.card-custom .card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent);
}

/* Drop zone */
.drop-zone {
    border: 2px dashed #ccc;
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fafafa;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent);
    background: #eaf2f8;
}

.drop-zone i {
    font-size: 48px;
    color: var(--accent);
    margin-bottom: 12px;
}

.drop-zone p {
    color: var(--text-muted);
    margin: 0;
}

.drop-zone .file-info {
    display: none;
    margin-top: 12px;
    padding: 8px 12px;
    background: #eaf2f8;
    border-radius: 6px;
    font-size: 13px;
}

/* Progress bars */
.progress-thin {
    height: 6px;
    border-radius: 3px;
}

/* Tabs */
.nav-tabs .nav-link {
    color: var(--text-muted);
    border: none;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.nav-tabs .nav-link:hover {
    color: var(--primary);
    border: none;
    background: transparent;
}

.nav-tabs .nav-link.active {
    color: var(--accent);
    border: none;
    border-bottom: 3px solid var(--accent);
    background: transparent;
}

/* Tab content */
.tab-pane {
    padding-top: 20px;
}

/* Result display */
.result-text {
    background: #fafafa;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px;
    max-height: 400px;
    overflow-y: auto;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 13px;
    white-space: pre-wrap;
    line-height: 1.6;
}

/* Visualization area */
.viz-area {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    min-height: 400px;
}

.viz-area iframe {
    border: none;
    width: 100%;
    height: 600px;
}

/* Word cloud grid */
.wordcloud-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 16px;
}

.wordcloud-grid .wordcloud-item {
    text-align: center;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
}

.wordcloud-grid .wordcloud-item img {
    max-width: 100%;
    height: auto;
}

.wordcloud-grid .wordcloud-item .topic-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

/* DeepSeek analysis cards */
.analysis-card {
    background: #f8f9fa;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}

.analysis-card .topic-header {
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 8px;
}

.analysis-card .analysis-section {
    margin: 6px 0;
    font-size: 13px;
}

.analysis-card .analysis-section strong {
    color: var(--primary);
}

/* ECharts container */
.chart-container {
    width: 100%;
    height: 400px;
}

/* Buttons */
.btn-lda {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-lda:hover {
    background: #2980b9;
    color: #fff;
}

.btn-lda:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-lda-success:hover {
    background: #219a52;
}

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

.btn-lda-danger:hover {
    background: #c0392b;
}

/* Preview table */
.preview-table {
    font-size: 13px;
}

.preview-table th {
    background: #f8f9fa;
    position: sticky;
    top: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        padding: 12px;
    }
    .nav-tabs .nav-link {
        padding: 8px 12px;
        font-size: 13px;
    }
    .wordcloud-grid {
        grid-template-columns: 1fr;
    }
}