/* Chat message content presentation - markdown text, code blocks, tool/part cards, media and
   citation chips, and stream-outcome banners - shared by every surface that renders chat parts
   (the assistant ChatPanel and the workspace room threads). The classes are BEM-unique, so the
   rules bind by class alone; a host opts in by putting `chat-content` on an ancestor container,
   which supplies the custom properties below. */

.chat-content {
    --chat-heading-weight:      var(--font-weight-semibold);
    --chat-heading-line-height: var(--line-height-tight);
    --chat-heading-top:         var(--spacing-lg);
    --chat-heading-1-size: 1.35rem;
    --chat-heading-2-size: 1.2rem;
    --chat-heading-3-size: 1.05rem;
    --chat-heading-4-size: 1rem;
    --chat-heading-5-size: var(--font-size-base);
    --chat-heading-6-size: var(--font-size-base);

    --chat-code-bg: var(--color-surface-subtle);
    --chat-code-header-bg: var(--color-surface-subtle);
    --chat-code-border: var(--color-border);
    --chat-code-text: var(--color-text-primary);
    --chat-code-label: var(--color-text-secondary);
    --chat-code-label-hover: var(--color-text-primary);
}

.chat-panel__text {
    color: var(--color-text-primary);
    word-break: break-word;
}

.chat-panel__text > * { margin-top: var(--spacing-lg); margin-bottom: 0; }
.chat-panel__text > :first-child { margin-top: 0; }

/* Without these, headings fall back to Bootstrap sizes far too large for the chat body. */
.chat-panel__text :is(h1, h2, h3, h4, h5, h6) {
    margin-top: var(--chat-heading-top);
    margin-bottom: var(--spacing-xs);
    font-weight: var(--chat-heading-weight);
    line-height: var(--chat-heading-line-height);
}
.chat-panel__text h1 { font-size: var(--chat-heading-1-size); }
.chat-panel__text h2 { font-size: var(--chat-heading-2-size); }
.chat-panel__text h3 { font-size: var(--chat-heading-3-size); }
.chat-panel__text h4 { font-size: var(--chat-heading-4-size); }
.chat-panel__text h5 { font-size: var(--chat-heading-5-size); }
.chat-panel__text h6 {
    font-size: var(--chat-heading-6-size);
    color: var(--color-text-secondary);
}

.chat-panel__text code {
    padding: 1px var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    background: var(--color-surface-subtle);
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-sm);
}

.chat-code {
    border: 1px solid var(--chat-code-border);
    border-radius: var(--border-radius-md);
    background: var(--chat-code-bg);
    overflow: hidden;
}

.chat-code__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--chat-code-header-bg);
    border-bottom: 1px solid var(--chat-code-border);
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-xs);
    color: var(--chat-code-label);
}

.chat-code__language {
    color: var(--chat-code-label);
}

.chat-code__actions {
    margin-left: auto;
    display: inline-flex;
    gap: var(--spacing-md);
}

.chat-code__action {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--chat-code-label);
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-xs);
    cursor: pointer;
}

.chat-code__action:hover {
    color: var(--chat-code-label-hover);
}

.chat-code__pre {
    margin: 0;
    padding: var(--spacing-md);
    background: var(--chat-code-bg);
    color: var(--chat-code-text);
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-sm);
    line-height: 1.65;
    overflow-x: auto;
    white-space: pre;
}

/* Code inside the dark block must not inherit the light inline-code chip styling. */
.chat-code__pre code {
    padding: 0;
    background: transparent;
    color: inherit;
    font-size: inherit;
}

.chat-code__token--keyword {
    color: var(--color-primary-light);
    font-weight: var(--font-weight-semibold);
}

/* Full-width bordered table; border-collapse:separate so the bare <table>'s own radius rounds. */
.chat-panel__text table {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--font-size-sm);
}

.chat-panel__text th,
.chat-panel__text td {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-bottom: 1px solid var(--color-border-light);
    text-align: left;
}

.chat-panel__text th {
    background: var(--color-surface-hover);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-semibold);
    border-bottom-color: var(--color-border);
}

.chat-panel__text tr:last-child td {
    border-bottom: 0;
}

.chat-panel__text li {
    margin-top: var(--spacing-sm);
}

.chat-panel__text li:first-child {
    margin-top: 0;
}

/* GFM task lists: drop the list bullet/indent so only the checkbox shows. */
.chat-panel__text ul:has(> li.task-list-item) {
    list-style: none;
    padding-left: 0;
}

.chat-panel__text li.task-list-item {
    list-style: none;
}

.chat-panel__text input[type="checkbox"] {
    accent-color: var(--color-primary);
}

.chat-panel__thinking {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background: var(--color-surface-hover);
    overflow: hidden;
}

.chat-panel__thinking-summary {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    user-select: none;
    list-style: none;
}

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

.chat-panel__thinking-icon {
    color: var(--color-text-tertiary);
}

.chat-panel__thinking-badge {
    padding: 1px var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    background: var(--color-surface-active);
    color: var(--color-text-tertiary);
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.chat-panel__thinking-caret {
    margin-left: auto;
    font-size: 0.7em;
    color: var(--color-text-tertiary);
    transition: transform var(--transition-fast);
}

.chat-panel__thinking[open] .chat-panel__thinking-caret {
    transform: rotate(180deg);
}

.chat-panel__thinking-body {
    margin: 0 var(--spacing-md) var(--spacing-sm) var(--spacing-md);
    padding-left: var(--spacing-sm);
    border-left: 2px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.chat-panel__part-card,
.chat-panel__attachment,
.chat-panel__citation {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background: var(--color-surface);
    overflow: hidden;
}

.chat-panel__part-card--dev {
    border-style: dashed;
    background: var(--color-background);
}

.chat-panel__part-meta {
    margin-left: auto;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.chat-panel__part-summary {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    cursor: pointer;
    user-select: none;
    list-style: none;
}

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

.chat-panel__part-icon {
    /* A centered fixed-width cell keeps every activity label aligned as glyph widths vary. */
    width: var(--spacing-lg);
    flex: 0 0 var(--spacing-lg);
    text-align: center;
    color: var(--color-text-tertiary);
}

.chat-panel__part-name {
    font-family: var(--font-family-monospace);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.chat-panel__part-name--plain {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.chat-panel__part-provider {
    margin-left: auto;
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* Caret pushes itself right only when it is the sole trailing control (the data card has no status). */
.chat-panel__part-caret {
    margin-left: auto;
    font-size: 0.7em;
    color: var(--color-text-tertiary);
    transition: transform var(--transition-fast);
}

/* When a status/provider already claimed margin-left:auto, the caret must not also — two auto margins split
   the free space and leave the status floating mid-row instead of flush right. */
.chat-panel__part-status ~ .chat-panel__part-caret,
.chat-panel__part-provider ~ .chat-panel__part-caret {
    margin-left: 0;
}

.chat-panel__part-card[open] .chat-panel__part-caret {
    transform: rotate(180deg);
}

.chat-panel__part-status {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-tertiary);
}

.chat-panel__part-status--error { color: var(--color-error); }

.chat-panel__part-body {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

.chat-panel__part-pre {
    margin: 0;
    padding: var(--spacing-sm);
    max-height: 18em;
    overflow: auto;
    border-radius: var(--border-radius-sm);
    background: var(--chat-code-bg);
    color: var(--chat-code-text);
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.chat-panel__part-output {
    margin: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    max-height: 18em;
    overflow: auto;
    border-top: 1px solid var(--color-border-light);
    background: var(--color-background);
    color: var(--color-text-primary);
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    white-space: pre;
}

/* Dev/native fallback JSON: light, dashed top border (on the dashed --dev card), not the dark block. */
.chat-panel__part-json {
    margin: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    overflow-x: auto;
    border-top: 1px dashed var(--color-border);
    color: var(--color-text-secondary);
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.chat-panel__nested-parts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
}

.chat-panel__attachment {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    max-width: 280px;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
}

.chat-panel__attachment-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
    background: var(--color-surface-active);
    color: var(--color-text-secondary);
    flex: 0 0 auto;
}

.chat-panel__attachment-main {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.chat-panel__attachment-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: var(--font-weight-medium);
}

.chat-panel__attachment-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.chat-panel__attachment-share {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex: 0 0 auto;
    border: 0;
    border-radius: var(--border-radius-sm);
    background: none;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.chat-panel__attachment-share:hover {
    background: var(--color-surface-active);
    color: var(--color-text-primary);
}

.chat-panel__attachment-share:disabled {
    cursor: default;
    opacity: 0.6;
}

.chat-panel__attachment-share.is-shared {
    color: var(--color-primary);
}

/* Image / generated-media preview card. No resolvable bytes, so the preview area is a placeholder. */
.chat-panel__media {
    max-width: 240px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: var(--color-surface);
}

.chat-panel__media-image {
    display: block;
    width: 100%;
    height: auto;
}

.chat-panel__media-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 120px;
    background: var(--color-surface-active);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-2xl);
}

.chat-panel__media-caption {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-top: 1px solid var(--color-border-light);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.chat-panel__media-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--color-text-primary);
}

.chat-panel__media-meta {
    margin-left: auto;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* Audio clip player (waveform is decorative; no resolvable audio yet). */
.chat-panel__audio {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    max-width: 280px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background: var(--color-surface);
}

.chat-panel__audio-play {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex: 0 0 auto;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: var(--font-size-xs);
}

.chat-panel__audio-wave {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
    height: 24px;
}

.chat-panel__audio-wave span {
    flex: 1;
    border-radius: 2px;
    background: var(--color-border-dark);
}

.chat-panel__audio-wave span:nth-child(3) {
    background: var(--color-primary);
}

.chat-panel__audio-name {
    flex: 0 0 auto;
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.chat-panel__citation {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

.chat-panel__citation-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: var(--border-radius-sm);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: var(--font-size-xs);
    flex: 0 0 auto;
}

.chat-panel__citation-main {
    min-width: 0;
}

.chat-panel__citation-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-link);
}

.chat-panel__citation-quote {
    margin-top: 2px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.chat-panel__sources-icon {
    width: 16px;
    flex: 0 0 auto;
    text-align: left;
    color: var(--color-link);
}

.chat-panel__sources-count {
    margin-left: auto;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.chat-panel__sources-check {
    font-size: var(--font-size-xs);
    color: var(--color-success);
}

.chat-panel__source {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
    text-decoration: none;
}

.chat-panel__source:hover {
    background: rgba(var(--color-primary-rgb), 0.06);
}

.chat-panel__source-favicon {
    position: relative;
    width: 16px;
    height: 16px;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    flex: 0 0 auto;
    color: var(--color-text-tertiary);
}

.chat-panel__source-favicon i {
    font-size: 13px;
    line-height: 16px;
    display: block;
    text-align: center;
}

.chat-panel__source-favicon img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.chat-panel__source-title {
    flex: 1 1 auto;
    min-width: 0;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-link);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-panel__source-domain {
    flex: 0 0 auto;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.chat-panel__refusal {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-warning-border-subtle);
    border-radius: var(--border-radius-md);
    background: var(--color-warning-bg-subtle);
    color: var(--color-warning-text-emphasis);
}

.chat-panel__refusal-head {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.chat-panel__refusal-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.chat-panel__refusal-badge {
    margin-left: auto;
    padding: 1px var(--spacing-xs);
    border: 1px solid var(--color-warning-border-subtle);
    border-radius: var(--border-radius-sm);
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.chat-panel__refusal-body {
    /* keep the amber refusal color; .chat-panel__text would otherwise force text-primary */
    color: inherit;
    font-size: var(--font-size-sm);
    line-height: 1.55;
}

/* ── Stream-outcome banners (thread-level, rendered by ChatErrorBanner) ───────── */
.chat-panel__state {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
}

.chat-panel__state--neutral {
    background: var(--color-background);
    color: var(--color-text-secondary);
}

.chat-panel__state--warn {
    border-color: var(--color-warning-border-subtle);
    background: var(--color-warning-bg-subtle);
    color: var(--color-warning-text-emphasis);
}

.chat-panel__state--info {
    border-color: var(--color-info-border-subtle);
    background: var(--color-info-bg-subtle);
    color: var(--color-info-text-emphasis);
}

.chat-panel__state--error {
    border-color: var(--color-error-border-subtle);
    background: var(--color-error-bg-subtle);
    color: var(--color-error-text-emphasis);
}

.chat-panel__state-text {
    flex: 1;
}

.chat-panel__state-action {
    flex: 0 0 auto;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--color-link);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
}

/* Image lightbox: the media card's image opens full size in a modal overlay. Shared by the
   assistant panel and room threads via ImagePart. */
.chat-panel__media-open {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: zoom-in;
}

.chat-lightbox {
    position: fixed;
    inset: 0;
    z-index: var(--z-index-modal);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: rgba(0, 0, 0, 0.85);
    cursor: zoom-out;
    outline: none;
}

.chat-lightbox__image {
    max-width: 92vw;
    max-height: 84vh;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    cursor: default;
}

.chat-lightbox__bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-pill);
    background: rgba(0, 0, 0, 0.6);
    color: var(--color-text-inverse, #fff);
    font-size: var(--font-size-sm);
    cursor: default;
}

.chat-lightbox__name {
    opacity: 0.85;
}

.chat-lightbox__action {
    display: inline-flex;
    align-items: center;
    border: 0;
    padding: 0;
    background: transparent;
    color: inherit;
    font-size: var(--font-size-sm);
    text-decoration: underline;
    cursor: pointer;
}

.chat-lightbox__action:hover {
    opacity: 0.8;
}