/* ── Data Analysis Tab ──────────────────────────────────────────── */

.data-section {
    display: none !important;
}
body.nav-data .data-section {
    display: flex !important;
    flex-direction: row;
    align-items: flex-start;
    width: 100%;
    min-height: calc(100vh - 56px);
    padding: 0;
    gap: 0;
    overflow: hidden;
}

/* ── Left column: input controls ────────────────────────────────── */
.data-left-col {
    width: 340px;
    min-width: 280px;
    max-width: 380px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 28px 20px 28px 24px;
    border-right: 1px solid var(--border-color, rgba(255,255,255,0.07));
    height: calc(100vh - 56px);
    overflow-y: auto;
    position: sticky;
    top: 56px;
}

.data-header { margin-bottom: 2px; }
.data-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary, #e8e8e8);
    margin: 0 0 4px;
    letter-spacing: -0.01em;
}
.data-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted, #888);
    margin: 0;
    line-height: 1.4;
}

/* Upload zone */
.data-upload-zone {
    border: 1.5px dashed var(--border-color, rgba(255,255,255,0.14));
    border-radius: 10px;
    padding: 22px 16px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.18s, background 0.18s;
    background: transparent;
}
.data-upload-zone:hover,
.data-upload-zone.drag-over {
    border-color: #5b8dee;
    background: rgba(91,141,238,0.05);
}
.data-upload-icon {
    margin-bottom: 8px;
    color: var(--text-muted, #888);
}
.data-upload-hint {
    font-size: 0.8rem;
    color: var(--text-muted, #888);
    margin: 0 0 4px;
}
.data-upload-link {
    color: #5b8dee;
    cursor: pointer;
    text-decoration: underline;
}
.data-upload-limit {
    font-size: 0.72rem;
    color: var(--text-muted, #666);
    margin: 0;
}

/* File card */
.data-file-card {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--card-bg, rgba(255,255,255,0.04));
    border: 1px solid var(--border-color, rgba(255,255,255,0.09));
    border-radius: 8px;
    padding: 10px 12px;
}
.data-file-icon { color: #5b8dee; flex-shrink: 0; }
.data-file-info { flex: 1; min-width: 0; }
.data-file-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary, #e0e0e0);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.data-file-meta {
    font-size: 0.72rem;
    color: var(--text-muted, #888);
    margin-top: 2px;
}
.data-file-remove {
    background: none;
    border: none;
    color: var(--text-muted, #888);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    flex-shrink: 0;
    transition: color 0.15s;
}
.data-file-remove:hover { color: #ee5b5b; }

/* Textareas */
.data-label {
    font-size: 0.73rem;
    font-weight: 600;
    color: var(--text-muted, #888);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 5px;
    display: block;
}
.data-textarea {
    width: 100%;
    box-sizing: border-box;
    background: var(--input-bg, rgba(255,255,255,0.04));
    border: 1px solid var(--border-color, rgba(255,255,255,0.1));
    border-radius: 8px;
    color: var(--text-primary, #e0e0e0);
    font-family: inherit;
    font-size: 0.83rem;
    line-height: 1.5;
    padding: 10px 12px;
    resize: vertical;
    transition: border-color 0.18s;
    outline: none;
}
.data-textarea:focus {
    border-color: #5b8dee;
}
.data-textarea::placeholder { color: var(--text-muted, #666); }

/* Submit button */
.data-submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    width: 100%;
    padding: 11px 0;
    background: #5b8dee;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.18s, opacity 0.18s;
    margin-top: 2px;
}
.data-submit-btn:hover { background: #4a7de0; }
.data-submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.data-error-msg {
    font-size: 0.78rem;
    color: #ee5b5b;
    text-align: center;
    padding: 6px 0 0;
}

/* ── Right column: results ───────────────────────────────────────── */
.data-right-col {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 28px 24px 40px;
    height: calc(100vh - 56px);
    overflow-y: auto;
}

/* Empty state */
.data-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 300px;
    gap: 14px;
    color: var(--text-muted, #666);
}
.data-empty-icon { opacity: 0.4; }
.data-empty-state p {
    font-size: 0.88rem;
    margin: 0;
    text-align: center;
}

/* Status bar */
.data-status-bar {
    font-size: 0.78rem;
    color: var(--text-muted, #888);
    display: flex;
    align-items: center;
    gap: 8px;
}
.data-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #5b8dee;
    animation: data-pulse 1.2s ease-in-out infinite;
}
@keyframes data-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.3; }
}

/* Data preview table */
.data-preview {
    background: var(--card-bg, rgba(255,255,255,0.03));
    border: 1px solid var(--border-color, rgba(255,255,255,0.08));
    border-radius: 10px;
    overflow: hidden;
}
.data-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.07));
}
.data-preview-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary, #ccc);
}
.data-preview-meta {
    font-size: 0.74rem;
    color: var(--text-muted, #888);
}
.data-preview-table-wrap { overflow-x: auto; max-height: 200px; }
.data-preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.76rem;
}
.data-preview-table th {
    background: rgba(91,141,238,0.1);
    color: #5b8dee;
    padding: 6px 10px;
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid rgba(91,141,238,0.2);
    font-weight: 600;
    position: sticky;
    top: 0;
}
.data-preview-table td {
    padding: 5px 10px;
    color: var(--text-secondary, #ccc);
    border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.05));
    white-space: nowrap;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
}
.data-preview-table tr:last-child td { border-bottom: none; }
.data-preview-warnings {
    padding: 6px 14px;
    font-size: 0.73rem;
    color: #e8a838;
    border-top: 1px solid var(--border-color, rgba(255,255,255,0.07));
}

/* ── Thinking box ────────────────────────────────────────────────── */
.data-thinking-box {
    background: var(--card-bg, rgba(255,255,255,0.02));
    border: 1px solid rgba(91,141,238,0.2);
    border-radius: 10px;
    overflow: hidden;
}
.data-thinking-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
    border-bottom: 1px solid rgba(91,141,238,0.1);
}
.data-thinking-header:hover { background: rgba(91,141,238,0.04); }
.data-thinking-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #7aaaf5;
}
.data-thinking-spinner {
    width: 10px;
    height: 10px;
    border: 2px solid rgba(91,141,238,0.3);
    border-top-color: #5b8dee;
    border-radius: 50%;
    animation: data-spin 0.8s linear infinite;
}
@keyframes data-spin { to { transform: rotate(360deg); } }
.data-thinking-spinner.done {
    border: none;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%235b8dee' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat;
    animation: none;
}
.data-thinking-toggle {
    font-size: 0.72rem;
    color: var(--text-muted, #888);
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 6px;
}
.data-thinking-body {
    padding: 12px 14px;
    font-size: 0.78rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--text-secondary, #bbb);
    line-height: 1.65;
    white-space: pre-wrap;
    max-height: 280px;
    overflow-y: auto;
}
.data-thinking-body.collapsed { display: none; }

/* ── Workflow steps ───────────────────────────────────────────────── */
/* ── Reasoning stream ────────────────────────────────────────────── */
.data-reasoning-stream {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 4px;
}
.data-reasoning-bubble {
    background: rgba(255,255,255,0.03);
    border-left: 2px solid rgba(91,141,238,0.45);
    border-radius: 0 6px 6px 0;
    padding: 7px 12px;
    font-size: 0.8rem;
    color: #b0b8cc;
    line-height: 1.55;
    white-space: pre-wrap;
    word-break: break-word;
}
.data-reasoning-bubble.post {
    border-left-color: rgba(91,238,158,0.45);
    color: #a0c8b0;
}

/* ── Workflow steps ───────────────────────────────────────────────── */
.data-workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.data-workflow-title {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted, #888);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.data-step-card {
    background: var(--card-bg, rgba(255,255,255,0.03));
    border: 1px solid var(--border-color, rgba(255,255,255,0.08));
    border-radius: 9px;
    overflow: hidden;
    transition: border-color 0.2s;
}
.data-step-card.running { border-color: rgba(91,141,238,0.35); }
.data-step-card.done    { border-color: rgba(91,238,158,0.2); }
.data-step-card.error   { border-color: rgba(238,91,91,0.3); }

.data-step-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 13px;
    cursor: pointer;
    user-select: none;
}
.data-step-header:hover { background: rgba(255,255,255,0.02); }

.data-step-num {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(91,141,238,0.15);
    color: #5b8dee;
    font-size: 0.68rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.data-step-card.done .data-step-num {
    background: rgba(91,238,158,0.15);
    color: #5bee9e;
}
.data-step-card.error .data-step-num {
    background: rgba(238,91,91,0.15);
    color: #ee5b5b;
}

.data-step-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary, #e0e0e0);
    font-family: 'SF Mono', monospace;
}
.data-step-args {
    flex: 1;
    font-size: 0.72rem;
    color: var(--text-muted, #888);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.data-step-status {
    flex-shrink: 0;
    font-size: 0.7rem;
    color: var(--text-muted, #777);
}
.data-step-status.running { color: #5b8dee; }
.data-step-status.done    { color: #5bee9e; }
.data-step-status.error   { color: #ee5b5b; }

.data-step-body {
    border-top: 1px solid var(--border-color, rgba(255,255,255,0.06));
}
.data-step-body.collapsed { display: none; }

.data-step-code-wrap {
    position: relative;
    background: #0d1117;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.data-step-code-label {
    position: absolute;
    top: 6px;
    right: 10px;
    font-size: 0.65rem;
    color: #5b8dee;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
    opacity: 0.7;
}
.data-step-code {
    padding: 10px 14px;
    font-size: 0.76rem;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    color: #c9d1d9;
    white-space: pre;
    overflow-x: auto;
    line-height: 1.6;
}
/* Syntax-ish coloring via CSS */
.data-step-code .kw  { color: #ff7b72; }
.data-step-code .fn  { color: #d2a8ff; }
.data-step-code .str { color: #a5d6ff; }
.data-step-code .num { color: #79c0ff; }
.data-step-code .cm  { color: #8b949e; font-style: italic; }

.data-step-result {
    padding: 8px 13px;
    font-size: 0.76rem;
    color: var(--text-secondary, #bbb);
    line-height: 1.5;
}
.data-step-result-table {
    border-collapse: collapse;
    font-size: 0.73rem;
    margin-top: 4px;
    width: 100%;
}
.data-step-result-table th, .data-step-result-table td {
    padding: 3px 8px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    text-align: left;
}
.data-step-result-table th { color: #5b8dee; font-weight: 600; }
.data-step-result .result-error { color: #ee5b5b; font-style: italic; }

/* ── Charts ──────────────────────────────────────────────────────── */
.data-charts {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}
.data-chart-wrap {
    flex: 1 1 300px;
    min-width: 260px;
    background: var(--card-bg, rgba(255,255,255,0.03));
    border: 1px solid var(--border-color, rgba(255,255,255,0.08));
    border-radius: 10px;
    overflow: hidden;
}
.data-chart-title {
    padding: 8px 12px;
    font-size: 0.77rem;
    font-weight: 600;
    color: var(--text-secondary, #ccc);
    border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.06));
}
.data-chart-wrap img {
    display: block;
    width: 100%;
    height: auto;
}

/* ── Final report ────────────────────────────────────────────────── */
.data-report {
    background: var(--card-bg, rgba(255,255,255,0.02));
    border: 1px solid var(--border-color, rgba(255,255,255,0.08));
    border-radius: 10px;
    overflow: hidden;
}
.data-report-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.07));
}
.data-report-header-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary, #e0e0e0);
}
.data-report-copy {
    background: none;
    border: 1px solid var(--border-color, rgba(255,255,255,0.12));
    border-radius: 5px;
    color: var(--text-muted, #888);
    font-size: 0.74rem;
    padding: 3px 8px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}
.data-report-copy:hover { color: var(--text-primary, #e0e0e0); border-color: rgba(255,255,255,0.25); }

.data-report-content {
    padding: 16px 18px;
    font-size: 0.85rem;
    line-height: 1.75;
    color: var(--text-secondary, #ccc);
}
.data-report-content h1, .data-report-content h2 {
    color: var(--text-primary, #e8e8e8);
    font-size: 1rem;
    font-weight: 700;
    margin: 16px 0 6px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.08));
}
.data-report-content h3 {
    color: var(--text-primary, #e0e0e0);
    font-size: 0.9rem;
    font-weight: 600;
    margin: 12px 0 4px;
}
.data-report-content strong { color: var(--text-primary, #e8e8e8); }
.data-report-content ul, .data-report-content ol {
    margin: 6px 0;
    padding-left: 22px;
}
.data-report-content li { margin: 3px 0; }
.data-report-content code {
    background: rgba(91,141,238,0.1);
    color: #7aaaf5;
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.82em;
    font-family: monospace;
}

/* ── Done badge ──────────────────────────────────────────────────── */
.data-done-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background: rgba(91,238,158,0.08);
    border: 1px solid rgba(91,238,158,0.25);
    border-radius: 20px;
    font-size: 0.76rem;
    color: #5bee9e;
    font-weight: 600;
}

/* ── Mobile ──────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    body.nav-data .data-section {
        flex-direction: column;
    }
    .data-left-col {
        width: 100%;
        max-width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.07));
        padding: 18px 16px;
    }
    .data-right-col {
        height: auto;
        padding: 18px 16px 32px;
    }
}