*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* ── Radix-based semantic tokens (Speechmatics brand) ── */
    --bg-app:       var(--sage-1);
    --bg-subtle:    var(--sage-2);
    --bg-surface:   #ffffff;
    --bg-overlay:   var(--sage-3);

    --border-subtle: var(--sage-6);
    --border-ui:     var(--sage-7);
    --border-strong: var(--sage-8);

    --text-primary:     var(--sage-12);
    --text-secondary:   var(--sage-11);
    --text-placeholder: var(--sage-9);

    --jade-bg:          var(--jade-2);
    --jade-border:      var(--jade-7);
    --jade-solid:       var(--jade-9);
    --jade-solid-hover: var(--jade-10);
    --jade-text:        var(--jade-11);

    --orange-bg:     var(--orange-2);
    --orange-border: var(--orange-7);
    --orange-solid:  var(--orange-9);
    --orange-text:   var(--orange-11);

    --amber-bg:     var(--amber-2);
    --amber-border: var(--amber-7);
    --amber-solid:  var(--amber-9);
    --amber-text:   var(--amber-11);

    --brand-solid: #0D3C48;
    --brand-text:  #0D3C48;

    /* ── Aliases for in-file references ── */
    --bg:        var(--bg-app);
    --surface:   var(--bg-surface);
    --border:    var(--border-subtle);
    --text:      var(--text-primary);
    --text-muted: var(--text-secondary);
    --accent:    var(--jade-solid);
    --radius:    4px;
    --shadow:    0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -1px rgba(0, 0, 0, .04);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
.header {
    background: var(--brand-solid);
    color: #fff;
    padding: 14px 24px;
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.header h1 {
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
}

.header-logo {
    height: 1em;
    width: auto;
    display: block;
}

.header .subtitle {
    color: var(--sage-8);
    font-size: 0.82rem;
}

/* ── Main layout ─────────────────────────────────────────────────────────────── */
.main {
    max-width: 1500px;
    margin: 0 auto;
    padding: 20px 24px;
}

/* ── Setup card ──────────────────────────────────────────────────────────────── */
.setup-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 20px;
    align-items: stretch;
}

.setup-left {
    flex: 1;
    min-width: 220px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.setup-right {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-left: 1px solid var(--border);
    padding-left: 20px;
}

@media (max-width: 700px) {
    .setup-card {
        flex-direction: column;
    }

    .setup-right {
        border-left: none;
        border-top: 1px solid var(--border);
        padding-left: 0;
        padding-top: 16px;
    }
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

/* ── How to use ──────────────────────────────────────────────────────────────── */
.setup-instructions {
    flex: 1;
}

.instructions-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.instructions-list {
    padding-left: 16px;
    display: flex;
    flex-direction: column;
    gap: 7px;
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.45;
}

.field-group label {
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--text);
}

.model-selector {
    display: flex;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    width: fit-content;
}

.model-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
}

.model-option input[type="radio"] {
    display: none;
}

.model-option span {
    display: block;
    padding: 7px 18px;
    font-size: 0.875rem;
    color: var(--text-muted);
    border-right: 1px solid var(--border);
    transition: background 0.1s, color 0.1s;
}

.model-option:last-child span {
    border-right: none;
}

.model-option input[type="radio"]:checked + span {
    background: var(--brand-solid);
    color: #fff;
}

.input-row {
    display: flex;
    gap: 6px;
}

.input-row input {
    flex: 1;
}

input[type="password"],
input[type="text"] {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--text);
    outline: none;
    width: 100%;
}

input:focus {
    border-color: var(--jade-solid);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--jade-solid) 15%, transparent);
}

.field-hint {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* ── Upload zone ─────────────────────────────────────────────────────────────── */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    cursor: pointer;
    transition: border-color .15s, background .15s;
    flex: 2;
    min-width: 300px;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-zone:hover {
    border-color: var(--jade-solid);
    background: var(--jade-bg);
}

.upload-zone.drag-over {
    border-color: var(--jade-solid);
    background: var(--jade-bg);
}

.upload-inner {
    pointer-events: none;
}

.upload-icon {
    font-size: 1.8rem;
    margin-bottom: 6px;
}

.upload-main {
    font-weight: 500;
    color: var(--text);
}

.upload-sub {
    color: var(--text-muted);
    font-size: 0.82rem;
    margin-top: 3px;
}

.upload-hint {
    color: var(--text-placeholder);
    font-size: 0.75rem;
    margin-top: 8px;
}

.file-link {
    color: var(--jade-text);
    cursor: pointer;
    text-decoration: underline;
    pointer-events: all;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--jade-bg);
    border: 1px solid var(--jade-border);
    border-radius: var(--radius);
    font-size: 0.88rem;
}

#fileName {
    font-weight: 600;
}

#fileSize {
    color: var(--text-muted);
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn-row {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 10px;
    margin-top: auto;
}

.btn-row-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    padding: 9px 22px;
    background: var(--brand-solid);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s, opacity .15s;
    white-space: nowrap;
}

.btn-primary:hover:not(:disabled) {
    background: color-mix(in srgb, var(--brand-solid) 85%, black);
}

.btn-primary:disabled {
    opacity: .45;
    cursor: not-allowed;
}

.btn-secondary {
    padding: 9px 18px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    cursor: pointer;
}

.btn-secondary:hover {
    background: var(--bg-overlay);
}

.btn-icon {
    padding: 5px 9px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1;
}

.btn-icon:hover {
    background: var(--bg-overlay);
}

.btn-icon-img {
    width: 16px;
    height: 16px;
    display: block;
    opacity: 0.6;
}

.btn-icon:hover .btn-icon-img {
    opacity: 1;
}

/* ── Audio player ────────────────────────────────────────────────────────────── */
.audio-player {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-subtle);
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.player-btn {
    padding: 4px 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--text);
    line-height: 1.4;
    transition: background .12s;
}

.player-btn:hover {
    background: var(--bg-overlay);
}

.player-btn-play {
    background: var(--brand-solid);
    color: #fff;
    border-color: var(--brand-solid);
    min-width: 36px;
    text-align: center;
}

.player-btn-play:hover {
    background: color-mix(in srgb, var(--brand-solid) 85%, black);
    border-color: color-mix(in srgb, var(--brand-solid) 85%, black);
}

.player-time {
    font-family: 'DM Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: 2px;
}

/* ── Comparison panels ───────────────────────────────────────────────────────── */
.panels-toolbar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.diff-tooltip-anchor--spacer {
    visibility: hidden;
    pointer-events: none;
}

.diff-tooltip-anchor--metric {
    width: 13px;
    height: 13px;
    font-size: 0.6rem;
    flex-shrink: 0;
}

.metric-better .diff-tooltip-anchor--metric {
    background: var(--jade-bg);
    border-color: var(--jade-border);
    color: var(--jade-text);
}

.metric-worse .diff-tooltip-anchor--metric {
    background: var(--orange-bg);
    border-color: var(--orange-border);
    color: var(--orange-text);
}

.metric-equal .diff-tooltip-anchor--metric {
    background: var(--bg-subtle);
    border-color: var(--border-ui);
    color: var(--text-secondary);
}

.diff-tooltip-anchor--metric .diff-tooltip {
    bottom: auto;
    top: calc(100% + 8px);
    width: 220px;
}

.diff-tooltip-anchor--metric .diff-tooltip::after {
    top: auto;
    bottom: 100%;
    border-top-color: transparent;
    border-bottom-color: var(--brand-solid);
}

.diff-tooltip-anchor {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-subtle);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 700;
    cursor: default;
    user-select: none;
    flex-shrink: 0;
}

.diff-tooltip-anchor:hover {
    background: var(--bg-overlay);
    border-color: var(--border-ui);
    color: var(--text-primary);
}

.diff-tooltip {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    width: 260px;
    background: var(--brand-solid);
    color: var(--sage-4);
    font-size: 0.78rem;
    font-weight: 400;
    line-height: 1.5;
    padding: 8px 11px;
    border-radius: var(--radius);
    pointer-events: none;
    z-index: 10;
}

.diff-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--brand-solid);
}

.diff-tooltip-anchor:hover .diff-tooltip {
    display: block;
}

.btn-diff-toggle {
    padding: 9px 22px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--jade-solid);
    color: #fff;
}
/* Reserve width for the longer label so the button doesn't resize on toggle */
.btn-diff-toggle::after {
    content: 'Compare model transcript diffs';
    display: block;
    height: 0;
    overflow: hidden;
    visibility: hidden;
    pointer-events: none;
}
.btn-diff-toggle:hover {
    background: var(--jade-solid-hover);
}
.btn-diff-toggle.diff-off {
    background: var(--bg-subtle);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}
.btn-diff-toggle.diff-off:hover {
    background: var(--bg-overlay);
}

.panels-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    /* 7 shared rows: header | metrics | legend | transcript | refdiff | meta | raw
       Each panel uses subgrid so corresponding sections always align across columns. */
    grid-template-rows: repeat(7, auto);
    column-gap: 16px;
    align-items: start;
}

@media (max-width: 900px) {
    .panels-grid {
        grid-template-columns: 1fr;
        grid-template-rows: none;
        row-gap: 16px;
    }
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    /* Subgrid: span all 7 rows and slot children into the shared row track definitions */
    display: grid;
    grid-template-rows: subgrid;
    grid-row: span 7;
    /* Prevent wide <pre> content from expanding the panel beyond its 1fr column.
       Without this, min-width:auto (the grid-item default) lets the pre's intrinsic
       min-content width push the panel wider than the column track, which breaks
       sticky positioning and flex layout inside the second (omni) column. */
    min-width: 0;
}

@media (max-width: 900px) {
    .panel {
        display: flex;
        flex-direction: column;
        grid-row: auto;
    }
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 11px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-subtle);
    border-top: 3px solid var(--brand-solid);
}

.panel-header-title {
    display: flex;
    align-items: center;
    gap: 6px;
}

.panel-header h2 {
    font-size: 0.95rem;
    font-weight: 700;
}

.diff-tooltip-anchor--panel {
    width: 15px;
    height: 15px;
    font-size: 0.62rem;
    flex-shrink: 0;
}

.diff-tooltip-anchor--panel .diff-tooltip {
    bottom: auto;
    top: calc(100% + 8px);
    left: 0;
    transform: none;
    width: 220px;
}

.diff-tooltip-anchor--panel .diff-tooltip::after {
    top: auto;
    bottom: 100%;
    left: 10px;
    transform: none;
    border-top-color: transparent;
    border-bottom-color: var(--brand-solid);
}

.panel-status {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 9px;
    border-radius: 2px;
    display: flex;
    align-items: center;
    gap: 5px;
    font-family: 'DM Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.status-idle {
    background: var(--bg-subtle);
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
}

.status-loading {
    background: var(--amber-bg);
    color: var(--amber-text);
    border: 1px solid var(--amber-border);
}

.status-done {
    background: var(--jade-bg);
    color: var(--jade-text);
    border: 1px solid var(--jade-border);
}

.status-error {
    background: var(--orange-bg);
    color: var(--orange-text);
    border: 1px solid var(--orange-border);
}

.metrics-bar {
    padding: 6px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 0.78rem;
    color: var(--text-muted);
    min-height: 30px;
    align-items: center;
}

.metric {
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.metric b {
    color: var(--text);
}

/* ── Language legend ─────────────────────────────────────────────────────────── */
.lang-legend {
    padding: 5px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    align-items: center;
    min-height: 30px;
    font-size: 0.78rem;
}

.legend-label {
    color: var(--text-muted);
    margin-right: 2px;
}

.lang-chip {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 2px;
    border: 1.5px solid;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: .04em;
}

/* ── Transcript ──────────────────────────────────────────────────────────────── */
.transcript-container {
    padding: 16px 16px 0;
    flex: 1;
    min-height: 200px;
    max-height: 520px;
    overflow-y: auto;
    line-height: 1.9;
    font-size: 0.95rem;
    /* Prevent subgrid row stretching from making this taller than its content.
       Without this, the shared row track (sized by the taller panel) stretches
       the shorter panel's container, leaving a gap below the sticky hint. */
    align-self: start;
}

.transcript-placeholder {
    color: var(--text-muted);
    font-style: italic;
    display: flex;
    align-items: center;
    gap: 8px;
}

.transcript-hint {
    position: sticky;
    bottom: 0;
    margin-top: 14px;
    padding: 4px 0 16px;
    background: var(--bg-surface);
    font-size: 0.72rem;
    color: var(--text-placeholder);
    font-style: italic;
    text-align: center;
}

.transcript-hint::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    height: 12px;
    background: linear-gradient(to bottom, transparent, var(--bg-surface));
    pointer-events: none;
}

.error-msg {
    color: var(--orange-text);
    background: var(--orange-bg);
    border: 1px solid var(--orange-border);
    padding: 12px;
    border-radius: var(--radius);
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Language-coloured spans */
.lang-segment {
    display: inline;
    padding: 1px 0;
    border-bottom: 2px solid transparent;
    border-radius: 2px;
}

/* Timed word spans are clickable — seek + play from that word */
.lang-segment[data-start] {
    cursor: pointer;
}

.lang-segment[data-start]:hover {
    filter: brightness(0.93);
}

/* Karaoke highlight — currently spoken word during playback.
   No font-weight or size changes — those cause text reflow and jostling.
   Amber is used as the brand highlight colour for a single key element. */
.karaoke-active {
    background: var(--amber-solid) !important;
    color: var(--text-primary) !important;
    border-radius: 2px;
    outline: 2px solid var(--amber-border);
    outline-offset: 1px;
    transition: background 0.08s ease, outline-color 0.08s ease;
}

/* Diff highlight — consecutive differing words are wrapped in a single box. */
.diff-group {
    outline: 2.5px solid color-mix(in srgb, var(--orange-solid) 80%, transparent);
    border-radius: 2px;
    padding: 1px 0;
}


.lang-badge {
    font-size: .6em;
    font-weight: 700;
    vertical-align: super;
    margin-right: 1px;
    opacity: .65;
}

/* ── Collapsible panel sections (Job Metadata + Raw JSON) ────────────────────── */
.panel-details {
    border-top: 1px solid var(--border);
}

.panel-details summary {
    padding: 7px 16px;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    user-select: none;
    background: var(--bg-subtle);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-download-json {
    margin-left: auto;
    flex-shrink: 0;
    padding: 2px 8px;
    background: transparent;
    border: 1px solid var(--border-ui);
    border-radius: var(--radius);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1.4;
}

.btn-download-json:hover {
    background: var(--bg-overlay);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.panel-details summary::-webkit-details-marker {
    display: none;
}

.panel-details summary::before {
    content: '▶';
    font-size: .65em;
    transition: transform .15s;
}

.panel-details[open] summary::before {
    transform: rotate(90deg);
}

.panel-details summary:hover {
    background: var(--bg-overlay);
}

.panel-details pre {
    padding: 14px 16px;
    background: var(--brand-solid);
    color: var(--sage-4);
    font-size: 0.72rem;
    font-family: 'DM Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
    overflow-x: auto;
    max-height: 380px;
    overflow-y: auto;
    line-height: 1.45;
    white-space: pre;
}

/* ── Job Metadata rows ───────────────────────────────────────────────────────── */
.meta-rows {
    padding: 6px 16px 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-muted);
    padding: 2px 0;
    border-bottom: 1px solid var(--bg-overlay);
}

.meta-row:last-child {
    border-bottom: none;
}

.meta-row span:first-child {
    font-weight: 600;
    color: var(--text);
}

.meta-mono {
    font-family: 'DM Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.72rem;
}

/* ── Spinner ─────────────────────────────────────────────────────────────────── */
.spinner {
    display: inline-block;
    width: 11px;
    height: 11px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin .65s linear infinite;
    flex-shrink: 0;
}

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

/* ── Example file ───────────────────────────────────────────────────────────── */
.file-link-btn {
    background: none;
    border: none;
    padding: 0;
    color: var(--jade-text);
    cursor: pointer;
    font-size: inherit;
    font-family: inherit;
    text-decoration: underline;
    pointer-events: all;
}

.file-link-btn:hover {
    color: var(--jade-solid-hover);
}

.ref-active {
    background: var(--jade-bg);
    border-color: var(--jade-border);
}

/* ── Example file picker ─────────────────────────────────────────────────────── */
.reference-picker {
    padding: 14px 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.ref-picker-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
}

.ref-picker-options {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.ref-option-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 5px 12px;
    font-size: 0.82rem;
    cursor: pointer;
    color: var(--text);
    transition: background 0.1s, border-color 0.1s;
}

.ref-option-btn:hover:not(:disabled) {
    background: var(--jade-bg);
    border-color: var(--jade-border);
    color: var(--jade-text);
}

.ref-option-unavailable {
    opacity: 0.4;
    cursor: not-allowed;
}

.ref-picker-cancel {
    align-self: flex-start;
    background: none;
    border: none;
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
}

.ref-picker-cancel:hover {
    color: var(--text);
}

.ref-badge {
    font-size: 0.7rem;
    font-weight: 700;
    background: var(--jade-bg);
    color: var(--jade-text);
    border: 1px solid var(--jade-border);
    padding: 1px 6px;
    border-radius: 2px;
    letter-spacing: .04em;
    text-transform: uppercase;
    font-family: 'DM Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* ── Reference transcript comparison ────────────────────────────────────────── */
.refdiff-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px 0 4px;
}

.refdiff-box {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.refdiff-box-header {
    padding: 4px 12px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: .07em;
    text-transform: uppercase;
    background: var(--bg-subtle);
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    font-family: 'DM Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.refdiff-box-ref .refdiff-box-header {
    background: var(--bg-subtle);
    color: var(--text-secondary);
    border-bottom-color: var(--border-subtle);
}

.refdiff-box-hyp .refdiff-box-header {
    background: var(--jade-bg);
    color: var(--jade-text);
    border-bottom-color: var(--jade-border);
}

.refdiff-box-ref {
    border-color: var(--border-ui);
}

.refdiff-box-hyp {
    border-color: var(--jade-border);
}

.refdiff-box-body {
    padding: 10px 12px;
    font-size: 0.82rem;
    line-height: 1.8;
    word-break: break-word;
    color: var(--text);
}

.refdiff-ins {
    background: var(--jade-bg);
    color: var(--jade-text);
    border-radius: 2px;
    padding: 1px 3px;
    margin: 0 1px;
}

.refdiff-del {
    background: var(--orange-bg);
    color: var(--orange-text);
    text-decoration: line-through;
    border-radius: 2px;
    padding: 1px 3px;
    margin: 0 1px;
}

/* ── Metric comparison highlights ───────────────────────────────────────────── */
.metric-better {
    background: var(--jade-bg);
    color: var(--jade-text);
    border: 1px solid var(--jade-border);
    padding: 2px 7px;
    border-radius: 2px;
}

.metric-equal {
    background: var(--bg-subtle);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    padding: 2px 7px;
    border-radius: 2px;
}

.metric-worse {
    background: var(--orange-bg);
    color: var(--orange-text);
    border: 1px solid var(--orange-border);
    padding: 2px 7px;
    border-radius: 2px;
}

/* ── WER badge ───────────────────────────────────────────────────────────────── */
.wer-badge {
    display: inline-block;
    padding: 1px 7px;
    border-radius: 2px;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: 'DM Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* ── Reference .txt upload zone (setup card, custom audio only) ──────────────── */
.ref-txt-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 16px;
    border: 1px dashed var(--border-ui);
    border-radius: var(--radius);
    background: var(--bg-subtle);
    cursor: pointer;
    transition: border-color .15s, background .15s;
    color: var(--text-secondary);
    text-align: center;
}

.ref-txt-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    pointer-events: none;
}

.ref-txt-zone:hover {
    border-color: var(--jade-border);
    background: var(--jade-bg);
    color: var(--jade-text);
}

.ref-txt-zone--active {
    border-color: var(--jade-border);
    border-style: solid;
    background: var(--jade-bg);
    color: var(--jade-text);
}

.ref-txt-zone--drag {
    border-color: var(--jade-solid);
    border-style: solid;
    background: var(--jade-bg);
    color: var(--jade-text);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--jade-solid) 20%, transparent);
}

.ref-txt-icon {
    font-size: 1.5rem;
    line-height: 1;
    margin-bottom: 4px;
}

.ref-txt-info {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--jade-text);
    background: var(--jade-bg);
    border: 1px solid var(--jade-border);
    border-radius: var(--radius);
    padding: 3px 8px;
}

.ref-txt-clear {
    padding: 1px 6px;
    font-size: 0.72rem;
    flex-shrink: 0;
}

/* ── Reference paste bar (comparison section, custom audio only) ─────────────── */

/* ── Utilities ───────────────────────────────────────────────────────────────── */
.hidden {
    display: none !important;
}