/* ── Data Analysis Tab — Anthropic-style, theme-aware ────────────── */

/* ── Local design tokens (dark mode defaults) ─────────────────────── */
.data-section {
    --da-accent:         #D4956A;
    --da-accent-dk:      #C8865A;
    --da-accent-text:    #0C0B0A;
    --da-accent-dim:     rgba(212,149,106,0.08);
    --da-accent-border:  rgba(212,149,106,0.18);
    --da-success:        #7DB897;
    --da-success-dim:    rgba(125,184,151,0.08);
    --da-success-bd:     rgba(125,184,151,0.2);
    --da-error:          #E07878;
    --da-error-dim:      rgba(224,120,120,0.08);
    --da-error-bd:       rgba(224,120,120,0.16);
    --da-warning:        #D4A76A;

    --da-col-bg:         rgba(255,251,245,0.012);
    --da-col-bd:         rgba(255,251,245,0.06);
    --da-surface:        rgba(255,251,245,0.025);
    --da-surface-h:      rgba(255,251,245,0.045);
    --da-border:         rgba(255,251,245,0.07);
    --da-border-2:       rgba(255,251,245,0.12);
    --da-text-1:         #F0EDE8;
    --da-text-2:         #B5AFA8;
    --da-text-3:         #6B6560;
    --da-text-4:         #4A4642;
    --da-text-5:         #3A3735;
    --da-placeholder:    #3A3735;
    --da-code-bg:        #0C0B0A;
    --da-input-bg:       rgba(255,251,245,0.025);
    --da-input-bd:       rgba(255,251,245,0.08);
    --da-focus-bd:       rgba(212,149,106,0.42);
    --da-focus-sh:       rgba(212,149,106,0.08);
    --da-step-bar:       rgba(255,251,245,0.07);
}

/* ── Light mode overrides ─────────────────────────────────────────── */
[data-theme="light"] .data-section,
[data-theme="system"] .data-section {
    --da-accent:         #B5703A;
    --da-accent-dk:      #9E5E2C;
    --da-accent-text:    #FFFFFF;
    --da-accent-dim:     rgba(181,112,58,0.07);
    --da-accent-border:  rgba(181,112,58,0.22);
    --da-success:        #2D7A50;
    --da-success-dim:    rgba(45,122,80,0.07);
    --da-success-bd:     rgba(45,122,80,0.22);
    --da-error:          #C03030;
    --da-error-dim:      rgba(192,48,48,0.06);
    --da-error-bd:       rgba(192,48,48,0.22);
    --da-warning:        #9A6820;

    --da-col-bg:         rgba(0,0,0,0.022);
    --da-col-bd:         rgba(0,0,0,0.09);
    --da-surface:        rgba(0,0,0,0.028);
    --da-surface-h:      rgba(0,0,0,0.05);
    --da-border:         rgba(0,0,0,0.09);
    --da-border-2:       rgba(0,0,0,0.16);
    --da-text-1:         #1A1A1A;
    --da-text-2:         #444444;
    --da-text-3:         #777777;
    --da-text-4:         #AAAAAA;
    --da-text-5:         #CCCCCC;
    --da-placeholder:    #C4C0BC;
    --da-code-bg:        #ECEAE6;
    --da-input-bg:       rgba(0,0,0,0.028);
    --da-input-bd:       rgba(0,0,0,0.1);
    --da-focus-bd:       rgba(181,112,58,0.5);
    --da-focus-sh:       rgba(181,112,58,0.09);
    --da-step-bar:       rgba(0,0,0,0.07);
}

/* ── Keyframes ────────────────────────────────────────────────────── */
@keyframes da-char-blur {
    from { filter: blur(7px); opacity: 0; }
    to   { filter: blur(0);   opacity: 1; }
}
@keyframes da-panel-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes da-step-in {
    from { opacity: 0; transform: translateX(-6px); }
    to   { opacity: 1; transform: translateX(0); }
}
@keyframes da-bubble-in {
    from { opacity: 0; transform: translateY(5px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes da-pulse-dot {
    0%, 100% { opacity: 1;   transform: scale(1);    }
    50%       { opacity: 0.3; transform: scale(0.72); }
}
@keyframes da-spin { to { transform: rotate(360deg); } }
@keyframes da-bar-glow {
    0%, 100% { box-shadow: 0 0 4px rgba(212,149,106,0.5); }
    50%       { box-shadow: 0 0 14px rgba(212,149,106,0.9); }
}
@keyframes da-report-flash {
    from { opacity: 0.55; }
    to   { opacity: 1; }
}
@keyframes da-upload-pulse {
    0%, 100% { border-color: var(--da-accent-border); }
    50%       { border-color: var(--da-accent); }
}

/* ── Char-blur span ───────────────────────────────────────────────── */
.da-char {
    display: inline;
    animation: da-char-blur 0.38s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* ── Left column ──────────────────────────────────────────────────── */
.data-left-col {
    width: 310px;
    min-width: 255px;
    max-width: 350px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0;
    border-right: 1px solid var(--da-col-bd);
    height: calc(100vh - 56px);
    overflow-y: auto;
    position: sticky;
    top: 56px;
    background: var(--bg-primary);
    scrollbar-width: thin;
    scrollbar-color: var(--da-border) transparent;
}

/* Header */
.data-header {
    padding: 24px 24px 18px;
    border-bottom: 1px solid var(--da-border);
    flex-shrink: 0;
}
.data-title {
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--da-text-1);
    margin: 0 0 5px;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 9px;
}
.data-title-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--da-accent);
    flex-shrink: 0;
    box-shadow: 0 0 6px var(--da-accent-border);
    transition: box-shadow 0.3s;
}
body.nav-data .data-title-dot {
    animation: da-pulse-dot 3s ease-in-out infinite;
}
.data-subtitle {
    font-size: 0.72rem;
    color: var(--da-text-4);
    margin: 0;
    line-height: 1.5;
    padding-left: 16px;
}

/* Form sections */
.data-form-section {
    padding: 18px 24px;
    border-bottom: 1px solid var(--da-border);
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
}

/* Upload zone */
.data-upload-zone {
    border: 1.5px dashed var(--da-border-2);
    border-radius: 10px;
    padding: 22px 16px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.22s, background 0.22s;
    background: transparent;
    position: relative;
    overflow: hidden;
}
.data-upload-zone::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 65%, var(--da-accent-dim) 0%, transparent 65%);
    opacity: 0;
    transition: opacity 0.25s;
    pointer-events: none;
}
.data-upload-zone:hover,
.data-upload-zone.drag-over {
    border-color: var(--da-accent);
    background: var(--da-accent-dim);
}
.data-upload-zone:hover::after,
.data-upload-zone.drag-over::after {
    opacity: 1;
}
.data-upload-zone.drag-over {
    animation: da-upload-pulse 1s ease-in-out infinite;
}
.data-upload-icon {
    margin-bottom: 10px;
    color: var(--da-text-5);
    transition: color 0.22s, transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
    position: relative;
    z-index: 1;
}
.data-upload-zone:hover .data-upload-icon {
    color: var(--da-accent);
    transform: translateY(-3px);
}
.data-upload-hint {
    font-size: 0.79rem;
    color: var(--da-text-3);
    margin: 0 0 5px;
    line-height: 1.45;
    position: relative;
    z-index: 1;
}
.data-upload-link {
    color: var(--da-accent);
    cursor: pointer;
    border-bottom: 1px solid var(--da-accent-border);
    transition: border-color 0.15s, color 0.15s;
}
.data-upload-link:hover { border-color: var(--da-accent); }
.data-upload-limit {
    font-size: 0.69rem;
    color: var(--da-text-5);
    margin: 0;
    letter-spacing: 0.03em;
    position: relative;
    z-index: 1;
}

/* File card */
.data-file-card {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--da-accent-dim);
    border: 1px solid var(--da-accent-border);
    border-radius: 8px;
    padding: 10px 12px;
    animation: da-panel-in 0.25s ease;
}
.data-file-icon { color: var(--da-accent); flex-shrink: 0; }
.data-file-info { flex: 1; min-width: 0; }
.data-file-name {
    font-size: 0.81rem;
    font-weight: 600;
    color: var(--da-text-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.data-file-meta {
    font-size: 0.7rem;
    color: var(--da-text-4);
    margin-top: 2px;
}
.data-file-remove {
    background: none;
    border: none;
    color: var(--da-text-5);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 2px 5px;
    border-radius: 4px;
    flex-shrink: 0;
    transition: color 0.15s, background 0.15s;
    line-height: 1;
}
.data-file-remove:hover {
    color: var(--da-error);
    background: var(--da-error-dim);
}

/* Labels */
.data-label {
    font-size: 0.66rem;
    font-weight: 700;
    color: var(--da-text-4);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    margin-bottom: 7px;
    display: block;
    transition: color 0.15s;
}
.data-form-section div:hover > .data-label {
    color: var(--da-text-3);
}

/* Textareas */
.data-textarea {
    width: 100%;
    box-sizing: border-box;
    background: var(--da-input-bg);
    border: 1px solid var(--da-input-bd);
    border-radius: 8px;
    color: var(--da-text-2);
    font-family: inherit;
    font-size: 0.81rem;
    line-height: 1.65;
    padding: 10px 12px;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    outline: none;
}
.data-textarea:hover {
    border-color: var(--da-border-2);
    background: var(--da-surface-h);
}
.data-textarea:focus {
    border-color: var(--da-focus-bd);
    box-shadow: 0 0 0 3px var(--da-focus-sh);
    background: var(--da-input-bg);
}
.data-textarea::placeholder {
    color: var(--da-placeholder);
    font-size: 0.79rem;
}

/* Submit area */
.data-submit-area {
    padding: 16px 24px 26px;
    flex-shrink: 0;
}

/* Submit button */
.data-submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    height: 44px;
    padding: 0 20px;
    background: var(--da-accent);
    color: var(--da-accent-text);
    border: none;
    border-radius: 8px;
    font-size: 0.84rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.16s, box-shadow 0.2s;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}
.data-submit-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, rgba(255,255,255,0.14) 0%, transparent 55%);
    pointer-events: none;
}
.data-submit-btn:hover:not(:disabled) {
    background: var(--da-accent-dk);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--da-accent-border);
}
.data-submit-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px var(--da-accent-dim);
}
.data-submit-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* Error */
.data-error-msg {
    font-size: 0.75rem;
    color: var(--da-error);
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 5px;
    line-height: 1.4;
}

/* ── Right column ─────────────────────────────────────────────────── */
.data-right-col {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 26px 28px 48px;
    height: calc(100vh - 56px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--da-border) transparent;
}

/* Empty state */
.data-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 320px;
    gap: 12px;
}
.data-empty-icon {
    color: var(--da-text-1);
    opacity: 0.18;
}
.data-empty-label {
    font-size: 0.86rem;
    color: var(--da-text-4);
    text-align: center;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin: 0;
}
.data-empty-hint {
    font-size: 0.72rem;
    color: var(--da-text-5);
    text-align: center;
    margin: 0;
    letter-spacing: 0.02em;
}

/* Status bar */
.data-status-bar {
    font-size: 0.75rem;
    color: var(--da-text-3);
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 15px;
    background: var(--da-accent-dim);
    border: 1px solid var(--da-accent-border);
    border-radius: 8px;
    animation: da-panel-in 0.25s ease;
    flex-shrink: 0;
}
.data-status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--da-accent);
    flex-shrink: 0;
    animation: da-pulse-dot 1.4s ease-in-out infinite;
}

/* ── Thinking box ─────────────────────────────────────────────────── */
.data-thinking-box {
    background: var(--bg-primary);
    border: 1px solid var(--da-border);
    border-radius: 11px;
    overflow: hidden;
    animation: da-panel-in 0.3s ease;
    flex-shrink: 0;
}
.data-thinking-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}
.data-thinking-header:hover { background: var(--da-surface-h); }
.data-thinking-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.67rem;
    font-weight: 700;
    color: var(--da-text-3);
    text-transform: uppercase;
    letter-spacing: 0.09em;
}
.data-thinking-spinner {
    width: 8px;
    height: 8px;
    border: 1.5px solid var(--da-accent-border);
    border-top-color: var(--da-accent);
    border-radius: 50%;
    animation: da-spin 0.75s linear infinite;
    flex-shrink: 0;
}
.data-thinking-spinner.done {
    border: none;
    animation: none;
    width: 8px;
    height: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--da-success);
    font-size: 0.65rem;
    font-weight: 800;
}
.data-thinking-spinner.done::after { content: '✓'; }
.data-thinking-toggle {
    font-size: 0.67rem;
    color: var(--da-text-4);
    background: var(--da-surface);
    border: 1px solid var(--da-border);
    cursor: pointer;
    padding: 2px 9px;
    border-radius: 4px;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
    font-weight: 500;
}
.data-thinking-toggle:hover {
    color: var(--da-text-2);
    border-color: var(--da-border-2);
    background: var(--da-surface-h);
}
.data-thinking-body {
    padding: 12px 15px;
    font-size: 0.82rem;
    font-family: inherit;
    color: var(--da-text-2);
    line-height: 1.78;
    white-space: pre-wrap;
    word-break: break-word;
    border-top: 1px solid var(--da-border);
}
.data-thinking-body.collapsed { display: none; }

/* ── Reasoning stream ─────────────────────────────────────────────── */
.data-reasoning-stream {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex-shrink: 0;
}
.data-reasoning-bubble {
    border-left: 2px solid var(--da-accent-border);
    padding: 6px 12px;
    font-size: 0.79rem;
    color: var(--da-text-4);
    line-height: 1.65;
    font-style: italic;
    animation: da-bubble-in 0.28s ease forwards;
    border-radius: 0 5px 5px 0;
}
.data-reasoning-bubble.post {
    border-left-color: var(--da-border);
    color: var(--da-text-5);
}

/* ── Workflow steps ───────────────────────────────────────────────── */
.data-workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 7px;
    flex-shrink: 0;
}
.data-workflow-title {
    font-size: 0.64rem;
    font-weight: 700;
    color: var(--da-text-5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 3px;
    padding-left: 2px;
}

/* Step cards */
.data-step-card {
    background: var(--da-surface);
    border: 1px solid var(--da-border);
    border-radius: 10px;
    overflow: hidden;
    transition: border-color 0.22s, box-shadow 0.22s;
    animation: da-step-in 0.28s ease;
    position: relative;
}
.data-step-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 2px;
    border-radius: 2px 0 0 2px;
    background: var(--da-step-bar);
    transition: background 0.22s, box-shadow 0.22s;
}
.data-step-card:hover {
    border-color: var(--da-border-2);
}
.data-step-card.running {
    border-color: var(--da-accent-border);
}
.data-step-card.running::before {
    background: var(--da-accent);
    animation: da-bar-glow 1.5s ease-in-out infinite;
}
.data-step-card.done::before   { background: var(--da-success); }
.data-step-card.error          { border-color: var(--da-error-bd); }
.data-step-card.error::before  { background: var(--da-error); }

.data-step-header {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 9px 13px 9px 16px;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}
.data-step-header:hover { background: var(--da-surface-h); }

.data-step-num {
    width: 17px; height: 17px;
    border-radius: 50%;
    background: var(--da-step-bar);
    color: var(--da-text-4);
    font-size: 0.6rem;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
    transition: background 0.2s, color 0.2s;
}
.data-step-card.done .data-step-num {
    background: var(--da-success-dim);
    color: var(--da-success);
}
.data-step-card.error .data-step-num {
    background: var(--da-error-dim);
    color: var(--da-error);
}

.data-step-name {
    font-size: 0.77rem;
    font-weight: 600;
    color: var(--da-text-1);
    font-family: 'SF Mono', 'Fira Code', monospace;
    flex-shrink: 0;
}
.data-step-args {
    flex: 1;
    font-size: 0.69rem;
    color: var(--da-text-5);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: 'SF Mono', 'Fira Code', monospace;
}
.data-step-status {
    flex-shrink: 0;
    font-size: 0.67rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 20px;
    letter-spacing: 0.02em;
    transition: background 0.2s, color 0.2s;
}
.data-step-status.running { color: var(--da-accent);  background: var(--da-accent-dim); }
.data-step-status.done    { color: var(--da-success); background: var(--da-success-dim); }
.data-step-status.error   { color: var(--da-error);   background: var(--da-error-dim); }

.data-step-body { border-top: 1px solid var(--da-border); }
.data-step-body.collapsed { display: none; }

.data-step-code-wrap {
    position: relative;
    background: var(--da-code-bg);
    border-bottom: 1px solid var(--da-border);
}
.data-step-code-label {
    position: absolute;
    top: 7px; right: 12px;
    font-size: 0.58rem;
    color: var(--da-text-5);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    font-weight: 700;
}
.data-step-code {
    padding: 11px 15px;
    font-size: 0.74rem;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    color: var(--da-text-2);
    white-space: pre;
    overflow-x: auto;
    line-height: 1.65;
    scrollbar-width: thin;
    scrollbar-color: var(--da-border) transparent;
}
.data-step-code .kw  { color: var(--da-error); }
.data-step-code .fn  { color: #C4A3E0; }
.data-step-code .str { color: var(--da-success); }
.data-step-code .num { color: var(--da-accent); }
.data-step-code .cm  { color: var(--da-text-5); font-style: italic; }

.data-step-result {
    padding: 9px 13px 9px 16px;
    font-size: 0.74rem;
    color: var(--da-text-3);
    line-height: 1.5;
}
.data-step-result-table {
    border-collapse: collapse;
    font-size: 0.7rem;
    margin-top: 5px;
    width: 100%;
}
.data-step-result-table th,
.data-step-result-table td {
    padding: 4px 10px;
    border-bottom: 1px solid var(--da-border);
    text-align: left;
}
.data-step-result-table th {
    color: var(--da-text-2);
    font-weight: 600;
    font-size: 0.64rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.data-step-result .result-error { color: var(--da-error); font-style: italic; }

/* ── Data preview ─────────────────────────────────────────────────── */
.data-preview {
    background: var(--da-surface);
    border: 1px solid var(--da-border);
    border-radius: 11px;
    overflow: hidden;
    animation: da-panel-in 0.3s ease;
    flex-shrink: 0;
}
.data-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 15px;
    border-bottom: 1px solid var(--da-border);
}
.data-preview-title {
    font-size: 0.66rem;
    font-weight: 700;
    color: var(--da-text-4);
    text-transform: uppercase;
    letter-spacing: 0.09em;
}
.data-preview-meta {
    font-size: 0.7rem;
    color: var(--da-text-4);
    font-variant-numeric: tabular-nums;
}
.data-preview-table-wrap { overflow-x: auto; max-height: 190px; }
.data-preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.72rem;
}
.data-preview-table th {
    background: var(--da-surface-h);
    color: var(--da-text-2);
    padding: 7px 12px;
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid var(--da-border-2);
    font-weight: 700;
    position: sticky;
    top: 0;
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.data-preview-table td {
    padding: 6px 12px;
    color: var(--da-text-3);
    border-bottom: 1px solid var(--da-border);
    white-space: nowrap;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.12s, background 0.12s;
}
.data-preview-table tr:last-child td { border-bottom: none; }
.data-preview-table tr:hover td {
    background: var(--da-surface-h);
    color: var(--da-text-2);
}
.data-preview-warnings {
    padding: 8px 15px;
    font-size: 0.71rem;
    color: var(--da-warning);
    border-top: 1px solid var(--da-border);
    display: flex;
    align-items: center;
    gap: 6px;
}
.data-preview-warnings::before { content: '⚠'; }

/* ── Charts ───────────────────────────────────────────────────────── */
.data-charts {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    flex-shrink: 0;
}
.data-chart-wrap {
    flex: 1 1 300px;
    min-width: 260px;
    background: var(--da-surface);
    border: 1px solid var(--da-border);
    border-radius: 11px;
    overflow: hidden;
    animation: da-panel-in 0.35s ease;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.data-chart-wrap:hover {
    border-color: var(--da-border-2);
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.data-chart-title {
    padding: 9px 14px;
    font-size: 0.66rem;
    font-weight: 700;
    color: var(--da-text-4);
    border-bottom: 1px solid var(--da-border);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.data-chart-wrap img {
    display: block;
    width: 100%;
    height: auto;
}

/* ── Final report ─────────────────────────────────────────────────── */
.data-report {
    background: var(--da-surface);
    border: 1px solid var(--da-border);
    border-radius: 11px;
    overflow: hidden;
    animation: da-panel-in 0.35s ease;
    flex-shrink: 0;
}
.data-report-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 11px 16px;
    border-bottom: 1px solid var(--da-border);
    background: var(--da-accent-dim);
}
.data-report-header-title {
    font-size: 0.66rem;
    font-weight: 700;
    color: var(--da-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 7px;
}
.data-report-header-title::before {
    content: '';
    display: inline-block;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--da-accent);
    box-shadow: 0 0 5px var(--da-accent-border);
}

/* Report action buttons row */
.data-report-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}
.data-report-copy,
.data-report-download {
    background: none;
    border: 1px solid var(--da-border-2);
    border-radius: 5px;
    color: var(--da-text-4);
    font-size: 0.69rem;
    padding: 3px 10px;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
}
.data-report-copy:hover,
.data-report-download:hover {
    color: var(--da-text-1);
    border-color: var(--da-accent-border);
    background: var(--da-accent-dim);
}
.data-report-download {
    color: var(--da-accent);
    border-color: var(--da-accent-border);
}
.data-report-download:hover {
    background: var(--da-accent-dim);
    border-color: var(--da-accent);
}

.data-report-content {
    padding: 20px 22px;
    font-size: 0.85rem;
    line-height: 1.82;
    color: var(--da-text-2);
}
.data-report-content.da-streaming {
    animation: da-report-flash 0.22s ease forwards;
}
.data-report-content h1,
.data-report-content h2 {
    color: var(--da-text-1);
    font-size: 0.93rem;
    font-weight: 700;
    margin: 18px 0 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--da-border);
    letter-spacing: -0.02em;
}
.data-report-content h3 {
    color: var(--da-accent);
    font-size: 0.84rem;
    font-weight: 600;
    margin: 14px 0 5px;
    letter-spacing: -0.01em;
}
.data-report-content strong { color: var(--da-text-1); font-weight: 600; }
.data-report-content ul,
.data-report-content ol { margin: 7px 0; padding-left: 20px; }
.data-report-content li { margin: 3px 0; }
.data-report-content code {
    background: var(--da-surface-h);
    color: var(--da-accent);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.81em;
    font-family: 'SF Mono', monospace;
    border: 1px solid var(--da-border);
}
.data-report-content pre {
    background: var(--da-code-bg);
    border: 1px solid var(--da-border);
    border-radius: 8px;
    padding: 12px 16px;
    overflow-x: auto;
    font-size: 0.77rem;
    font-family: 'SF Mono', monospace;
    color: var(--da-text-2);
    margin: 10px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--da-border) transparent;
}
.data-report-content hr {
    border: none;
    border-top: 1px solid var(--da-border);
    margin: 14px 0;
}

/* ── Done badge ───────────────────────────────────────────────────── */
.data-done-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 14px;
    background: var(--da-success-dim);
    border: 1px solid var(--da-success-bd);
    border-radius: 20px;
    font-size: 0.71rem;
    color: var(--da-success);
    font-weight: 600;
    letter-spacing: 0.01em;
    animation: da-panel-in 0.3s ease;
    flex-shrink: 0;
    align-self: flex-start;
}

/* ── 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(--da-col-bd);
    }
    .data-right-col {
        height: auto;
        padding: 20px 18px 40px;
    }
}