/*
 * The assistants' shared chat UI (@web/components/Chat).
 *
 * Real CSS rather than Box props because none of this is expressible as
 * props: the composer needs :focus-within, ::placeholder and
 * :placeholder-shown, the mention overlay has to match the textarea's box
 * and text metrics exactly or it drifts, and the dark theme switches a set
 * of custom properties rather than individual rules.
 */
/* `.chat-theme` carries the variables to an assistant's chrome outside these two. */
.chat-theme,
.chat-transcript,
.chat-composer-wrap {
    --chat-bg: white;
    --chat-user-bg: #edeff2;
    --chat-fg: #1c2127;
    --chat-muted: #5f6b7c;
    --chat-accent: #2d72d2;
    --chat-border: rgba(17, 20, 24, 0.12);
    --chat-border-strong: rgba(17, 20, 24, 0.2);
    --chat-subtle: #f6f7f9;
    --chat-danger: #cd4246;
    --chat-danger-subtle: rgba(205, 66, 70, 0.1);
    /* The reading column; matches ChatFrame's READING_WIDTH. */
    --chat-max: 820px;
}

.bp5-dark .chat-theme,
.bp5-dark .chat-transcript,
.bp5-dark .chat-composer-wrap {
    --chat-bg: #1c2127;
    --chat-user-bg: #30353d;
    --chat-fg: #f6f7f9;
    --chat-muted: #abb3bf;
    --chat-border: rgba(255, 255, 255, 0.14);
    --chat-border-strong: rgba(255, 255, 255, 0.24);
    --chat-subtle: #252a31;
    --chat-danger: #fa999c;
    --chat-danger-subtle: rgba(250, 153, 156, 0.14);
}

.chat-transcript,
.chat-composer-wrap {
    position: relative;
    width: 100%;
}

/* Over the whole composer while files are dragged onto it. */
.chat-composer-drop {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--chat-accent);
    border-radius: 14px;
    background: var(--chat-bg);
    color: var(--chat-accent);
    font-size: 13px;
    pointer-events: none;
}

.chat-composer {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--chat-border);
    border-radius: 14px;
    background: var(--chat-bg);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.chat-composer .bp5-input {
    flex: 1;
    min-height: 24px;
    max-height: 240px;
    padding: 4px 2px;
    border: 0;
    box-shadow: none;
    background: transparent;
    color: inherit;
    font-size: 14px;
    resize: none;
    line-height: 1.5;
    overflow-y: auto;
}

/* Wraps the input so picked tokens can be drawn behind it. */
.chat-input {
    position: relative;
    display: flex;
    flex: 1;
    min-width: 0;
}

/* Must match the textarea's box and text metrics exactly, or it drifts. */
.chat-input-highlight {
    position: absolute;
    inset: 0;
    padding: 4px 2px;
    overflow: hidden;
    color: var(--chat-fg);
    font: inherit;
    font-size: 14px;
    line-height: 1.5;
    white-space: pre-wrap;
    overflow-wrap: break-word;
    pointer-events: none;
}

.chat-input--rich .bp5-input {
    position: relative;
    color: transparent;
    caret-color: var(--chat-fg);
}

/* An empty input stays one line; the placeholder truncates, not wraps. */
.chat-composer .bp5-input:placeholder-shown {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.chat-composer .bp5-input::placeholder {
    text-overflow: ellipsis;
}

/* The pill carries the focus ring, so the field inside it does not. */
.chat-composer .bp5-input:focus {
    box-shadow: none;
}

.chat-composer:focus-within {
    border-color: var(--chat-border-strong);
}

.chat-composer .bp5-button.chat-stop {
    flex: none;
}

/* A ringed square, drawn rather than an icon: Blueprint has no circled stop. */
.chat-stop-icon {
    position: relative;
    width: 18px;
    height: 18px;
    border: 1.5px solid currentColor;
    border-radius: 50%;
}

.chat-stop-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    width: 6px;
    height: 6px;
    margin: auto;
    border-radius: 1px;
    background: currentColor;
}

/* An error notice's action keeps the banner's colour rather than Blueprint's. */
.chat-notice--error .bp5-button.bp5-minimal.chat-notice-action {
    color: var(--chat-danger);
    font-weight: 500;
}

.chat-notice--error .bp5-button.bp5-minimal.chat-notice-action:hover {
    background: var(--chat-danger-subtle);
    color: var(--chat-danger);
}

.chat-dots::after {
    content: '...';
    display: inline-block;
    width: 3ch;
    animation: chat-dots 1.2s steps(1) infinite;
}

@keyframes chat-dots {
    0% {
        content: '.';
    }
    33% {
        content: '..';
    }
    66% {
        content: '...';
    }
}

.chat-tool {
    border: 1px solid var(--chat-border);
    border-radius: 10px;
    font-size: 13px;
}

.bp5-button.chat-tool-header {
    --chat-button-color: var(--chat-muted);
    display: flex;
    gap: 8px;
    width: 100%;
    padding: 8px 12px;
}

.chat-tool-linked {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-right: 12px;
    color: var(--chat-muted);
}

.bp5-button.chat-tool-toggle {
    --chat-button-color: var(--chat-muted);
    display: flex;
    flex: none;
    gap: 8px;
    padding: 8px 0 8px 12px;
}

a.chat-tool-detail {
    color: inherit;
    text-decoration: underline;
}

.chat-tool-header .bp5-spinner {
    margin: 0;
}

.chat-tool-note {
    font-weight: normal;
    opacity: 0.7;
}

.chat-tool-failed {
    color: var(--chat-danger);
}

.chat-tool-rows {
    padding: 0 0 4px 20px;
}

.chat-tool-detail {
    flex: 1;
    font-family: monospace;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-tool-duration {
    font-variant-numeric: tabular-nums;
}

.chat-tool-body {
    padding: 0 10px 2px;
}

.chat-tool-label {
    margin: 4px 0;
    color: var(--chat-muted);
    font-weight: 600;
}

.chat-tool-body pre {
    max-height: 320px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.chat-thinking {
    color: var(--chat-muted);
    font-size: 12px;
}

.bp5-button.chat-thinking-header {
    display: flex;
    gap: 6px;
}

.chat-thinking-text {
    margin-top: 6px;
    padding-left: 10px;
    border-left: 2px solid var(--chat-border);
    font-style: italic;
    line-height: 1.5;
    white-space: pre-wrap;
}

/* Baseline, so Report's icon can't pull its text off the stats' line. */
.chat-footer {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-top: 6px;
    color: var(--chat-muted);
    font-size: 11px;
    font-variant-numeric: tabular-nums;
    opacity: 0.7;
    transition: opacity 150ms ease;
}

.chat-footer:hover {
    opacity: 1;
}

.bp5-button.chat-footer-action {
    --chat-button-hover-color: var(--chat-fg);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.bp5-button.chat-footer-action:hover {
    text-decoration: underline;
}

/* Earlier turns show their footer on hover; a reported turn keeps its tag. */
.chat-footer-host:not(.chat-footer-host--latest, :hover, :focus-within)
    > .chat-footer:not(:has(.chat-footer-reported)) {
    opacity: 0;
}

.chat-picker {
    position: absolute;
    z-index: 2;
    display: flex;
    flex-direction: column;
    width: min(100%, 420px);
    max-height: 360px;
    padding: 8px;
    border: 1px solid var(--chat-border);
    border-radius: 10px;
    background: var(--chat-bg);
    box-shadow: 0 4px 16px rgba(16, 24, 40, 0.1);
}

.chat-picker--above {
    bottom: calc(100% + 6px);
}

.chat-picker--below {
    top: calc(100% + 6px);
}

.chat-picker--start {
    left: 0;
}

.chat-picker--end {
    right: 0;
}

.chat-picker--fit {
    width: auto;
    min-width: 220px;
}

.chat-picker-search {
    flex: none;
    margin-bottom: 4px;
}

.chat-picker-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.chat-picker-section + .chat-picker-section {
    margin-top: 4px;
    padding-top: 4px;
    border-top: 1px solid var(--chat-border);
}

.chat-picker-heading {
    padding: 6px 8px 2px;
    color: var(--chat-muted);
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.bp5-button.chat-picker-item {
    --chat-button-color: var(--chat-fg);
    --chat-button-hover-bg: var(--chat-subtle);
    --chat-button-radius: 6px;
    display: flex;
    gap: 10px;
    width: 100%;
    padding: 6px 8px;
}

.chat-picker-item--active {
    --chat-button-bg: var(--chat-subtle);
}

.chat-picker-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-picker-name--code {
    font-family: monospace;
    font-weight: 600;
}

.chat-picker-detail {
    flex: none;
    max-width: 45%;
    overflow: hidden;
    color: var(--chat-muted);
    font-size: 12px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-picker-empty {
    display: flex;
    justify-content: center;
    padding: 12px;
    color: var(--chat-muted);
}

/*
 * Turns.
 *
 * Only the person's own words are tinted. An assistant's reply is the page,
 * not a speech bubble: it can be long, it can carry markdown, a table or a
 * form, and boxing that makes it read like a chat toy rather than an answer.
 */

.chat-transcript {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.chat-message--user {
    align-self: flex-end;
    max-width: 80%;
    padding: 10px 14px;
    /* Square on the sending corner, which is what points it at the sender. */
    border-radius: 16px 16px 4px 16px;
    background: var(--chat-user-bg);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    line-height: 1.5;
}

.chat-message--assistant {
    line-height: 1.6;
    overflow-wrap: anywhere;
}

.chat-message--assistant .markdown-container > *:first-child {
    margin-top: 0;
}

.chat-message--assistant .markdown-container > *:last-child {
    margin-bottom: 0;
}

.chat-message--assistant .markdown-container p {
    margin: 0 0 10px;
}

.chat-message--assistant .markdown-container code {
    padding: 1px 4px;
    border-radius: 4px;
    background: var(--chat-subtle);
    font-size: 0.9em;
}

.chat-message--assistant .chat-code {
    margin: 0 0 10px;
    border: 1px solid var(--chat-border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--chat-subtle);
}

.chat-message--assistant .chat-code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2px 4px 2px 12px;
    border-bottom: 1px solid var(--chat-border);
    background: var(--chat-bg);
    color: var(--chat-muted);
    font-size: 11px;
}

.chat-message--assistant .markdown-container .chat-code pre {
    margin: 0;
    padding: 12px 14px;
    border-radius: 0;
}

.chat-message--assistant .bp5-button.chat-copy-icon {
    --chat-button-color: var(--chat-muted);
    --chat-button-hover-color: var(--chat-fg);
    --chat-button-radius: 4px;
    display: inline-flex;
    padding: 4px;
}

.chat-message--assistant .markdown-container pre code {
    padding: 0;
    background: none;
}

.chat-message--assistant .markdown-container pre,
.chat-tool-body pre {
    margin: 0 0 10px;
    padding: 10px 12px;
    border-radius: 6px;
    background: var(--chat-subtle);
    box-shadow: none;
    overflow-x: auto;
    font-size: 12px;
    line-height: 1.45;
}

.chat-message--assistant .markdown-container ul,
.chat-message--assistant .markdown-container ol {
    margin: 0 0 10px;
    padding-left: 1.5rem;
}

.chat-message--assistant .markdown-container ul {
    list-style: disc;
}

.chat-message--assistant .markdown-container ol {
    list-style: decimal;
}

.chat-message--assistant .markdown-container li {
    display: list-item;
}

.chat-table {
    overflow: auto;
    border: 1px solid var(--chat-border);
    border-radius: 8px;
}

.chat-message--assistant .chat-table {
    margin: 0 0 10px;
}

.chat-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.chat-message--assistant .markdown-container table {
    font-variant-numeric: tabular-nums;
}

.chat-message--assistant .markdown-container a {
    color: var(--chat-accent);
}

.chat-table th,
.chat-table td {
    padding: 6px 12px;
    text-align: left;
}

.chat-message--assistant .markdown-container td {
    vertical-align: top;
}

.chat-table th {
    background: var(--chat-subtle);
    color: var(--chat-muted);
    font-weight: 600;
    white-space: nowrap;
}

.chat-table tr + tr > td,
.chat-table thead + tbody tr > td {
    border-top: 1px solid var(--chat-border);
}

.chat-message--assistant .markdown-container tbody tr:hover > td {
    background: var(--chat-subtle);
}

/* A form's table: scrolls within a height, header held, cells on one line. */
.chat-table--compact {
    max-height: 280px;
}

.chat-table--compact table {
    font-size: 12px;
}

.chat-table--compact th,
.chat-table--compact td {
    padding: 7px 12px;
    white-space: nowrap;
}

.chat-table--compact th {
    position: sticky;
    top: 0;
}

/* Models bold the first column; the row already reads as a key. */
.chat-message--assistant .markdown-container td strong {
    font-weight: 600;
}

/* A narrow panel has less to give away to the gutter. */
.chat-transcript--narrow .chat-message--user {
    max-width: 90%;
}

.chat-message-footer {
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    font-size: 12px;
}

/* A header turns the pill into a card: the header's row, then the input's. */
.chat-composer--header {
    flex-wrap: wrap;
    padding-top: 0;
}

.chat-composer-header {
    flex: 0 0 calc(100% + 24px);
    margin: 0 -12px 8px;
    border-bottom: 1px solid var(--chat-border);
}

/* Files the next message carries: inset like the input, no divider. */
.chat-composer--files {
    flex-wrap: wrap;
}

/* Cards fill the row evenly; past two rows (48px cards) the area scrolls. */
.chat-composer-files {
    display: grid;
    flex: 0 0 100%;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
    max-height: 104px;
    overflow-y: auto;
    margin-bottom: 2px;
}

/* Stacked: the text takes the full first row; the controls drop below it. */
.chat-composer--stacked {
    flex-wrap: wrap;
    align-items: center;
    padding: 14px;
}

.chat-composer--stacked .chat-input {
    flex-basis: 100%;
    order: -1;
}

/* The input is reordered to the top; whatever follows it in the DOM starts the right-hand group. */
.chat-composer--stacked .chat-input + * {
    margin-left: auto;
}

.chat-composer--stacked .bp5-input {
    min-height: 48px;
}

/* The highlight overlay must keep the textarea's padding. */
.chat-composer--stacked .bp5-input,
.chat-composer--stacked .chat-input-highlight {
    padding: 0;
}

.chat-queue {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.chat-queued {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    width: 100%;
}

.chat-queued-text,
.chat-queued-input {
    border: 0;
    color: var(--chat-fg);
    font: inherit;
    text-align: left;
    opacity: 0.7;
}

/* A plain button drawn as the user's bubble. */
.chat-queued .bp5-button.chat-queued-text {
    --chat-button-bg: var(--chat-user-bg);
    --chat-button-color: var(--chat-fg);
    --chat-button-radius: 16px 16px 4px 16px;
    cursor: text;
}

.chat-queued .bp5-button.chat-queued-text:disabled {
    cursor: default;
}

.chat-queued-text:hover,
.chat-queued-input {
    opacity: 1;
    outline: none;
}

.chat-queued-input {
    min-width: 240px;
}

.chat-queued .bp5-button.chat-queued-remove {
    --chat-button-color: var(--chat-muted);
    --chat-button-hover-color: var(--chat-fg);
    --chat-button-hover-bg: var(--chat-subtle);
    --chat-button-radius: 50%;
    display: inline-flex;
    padding: 4px;
}

.chat-file-card .bp5-button.chat-file-card-remove {
    --chat-button-color: var(--chat-muted);
    --chat-button-hover-color: var(--chat-fg);
    --chat-button-hover-bg: var(--chat-border);
    --chat-button-radius: 50%;
    display: inline-flex;
    flex-shrink: 0;
    padding: 4px;
    opacity: 0;
}

/* Remove shows on hover or focus; always where there is no hover. */
.chat-file-card:hover .bp5-button.chat-file-card-remove,
.chat-file-card:focus-within .bp5-button.chat-file-card-remove {
    opacity: 1;
}

@media (hover: none) {
    .chat-file-card .bp5-button.chat-file-card-remove {
        opacity: 1;
    }
}

.chat-file-card .bp5-progress-bar.chat-file-card-progress {
    height: 4px;
    background: var(--chat-border);
}

.chat-file-card-progress .bp5-progress-meter {
    background-color: var(--chat-muted);
}

.chat-queue .bp5-button.chat-queue-send {
    --chat-button-color: var(--chat-muted);
    --chat-button-hover-color: var(--chat-fg);
    margin-right: 28px;
    font-size: 12px;
}

.chat-queue .bp5-button.chat-queue-send:hover {
    text-decoration: underline;
}

.chat-composer-hint {
    margin-bottom: 6px;
    padding: 0 4px;
    color: var(--chat-muted);
    font-size: 12px;
}

/* Thin scrollbar on whatever scrolls the transcript, in either assistant. */
:has(> .chat-transcript) {
    scrollbar-width: thin;
    scrollbar-color: var(--chat-border-strong, rgba(17, 20, 24, 0.2))
        transparent;
}

:has(> .chat-transcript)::-webkit-scrollbar {
    width: 6px;
}

:has(> .chat-transcript)::-webkit-scrollbar-thumb {
    border-radius: 3px;
    background: rgba(17, 20, 24, 0.2);
}

.bp5-dark :has(> .chat-transcript)::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.24);
}