/* ============================================================
   Brain page (js/brain.js) + Claude chat (js/agent-chat.js) —
   PatchWork Standard. `.br-*` and `.agc-*` only; shared pieces
   are the `.sl-*` components from css/slate.css, extended by
   co-located modifiers, never restyled. Loaded after style.css,
   so the `.agc-*` rules here replace the old glass panel look
   at equal specificity.
   ============================================================ */

:root {
    --br-star: oklch(0.82 0.14 80);           /* star ratings: the one filled, coloured icon */
    --br-add-bg: oklch(0.76 0.16 156 / 0.1);  /* diff lines */
    --br-add-fg: oklch(0.86 0.1 155);
    --br-del-bg: oklch(0.65 0.19 25 / 0.1);
    --br-del-fg: oklch(0.82 0.1 25);
}

/* ─── page frame ─────────────────────────────────────────────── */
#home-tab-brain.home-tab-active {
    height: 100%;
    min-height: 0;
    align-self: stretch;
    overflow: hidden;
    padding: 0;
    background: var(--sl-app);
}
.br-page {
    display: flex; flex-direction: column; height: 100%; min-height: 0;
    font-family: var(--sl-font-ui); color: var(--sl-text-1); background: var(--sl-app);
}
.br-ic { display: inline-flex; flex: none; }
.br-ic svg { display: block; }
.br-flex { flex: 1; min-width: 0; }
.br-mono, .brain-mono { font-family: var(--sl-font-mono); }
.br-body { font-size: 13px; line-height: 1.55; color: var(--sl-text-1); margin: 0; }
.br-muted { color: var(--sl-text-2); }
.br-small { font-size: 12px; color: var(--sl-text-2); line-height: 1.5; }
.br-hint { font-size: 12px; color: var(--sl-text-3); line-height: 1.5; margin: 0; }
.br-loading { padding: 40px 0; text-align: center; color: var(--sl-text-3); font-size: 12.5px; }

.br-head { flex: none; padding: 30px 40px 0; }
.br-head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.br-head .sl-h1 { margin: 0; }
.br-sub { font-size: 12.5px; color: var(--sl-text-2); margin: 8px 0 0; max-width: 620px; line-height: 1.5; }
.br-head-actions { display: flex; gap: 8px; }
.br-tabs { margin-top: 20px; gap: 0 24px; }
.br-tab { display: inline-flex; align-items: center; gap: 7px; }
.br-tab-count { font-family: var(--sl-font-mono); font-size: 10.5px; font-weight: 500; color: var(--sl-link); }

.br-scroll { flex: 1; min-height: 0; overflow-y: auto; }
.br-body-pad { padding: 20px 40px 40px; }

/* empty states */
.br-empty { padding: 56px 20px; }
.br-empty-title { font-size: 13.5px; font-weight: 600; color: var(--sl-text-1); margin-top: 4px; }
.br-empty-text { font-size: 12.5px; color: var(--sl-text-2); max-width: 440px; line-height: 1.55; }
.br-empty-actions { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; justify-content: center; }
.br-empty-actions a.sl-btn-primary { text-decoration: none; }
.br-inline-error { margin-bottom: 14px; }

/* ─── My brains ──────────────────────────────────────────────── */
.br-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; }
.br-card { display: flex; flex-direction: column; gap: 12px; padding: 14px; cursor: pointer; min-width: 0; outline: none; }
.br-card:focus-visible { border-color: var(--sl-focus); }
.br-card-top { display: flex; align-items: flex-start; gap: 12px; min-width: 0; }
.br-card-id { flex: 1; min-width: 0; }
.br-card-name { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.br-card-name .sl-card-title, .br-card-name .br-detail-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.br-version { font-family: var(--sl-font-mono); font-size: 11px; color: var(--sl-text-3); flex: none; }
.br-origin { font-size: 12px; color: var(--sl-text-2); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.br-card-top > .sl-status { flex: none; font-size: 11.5px; margin-top: 2px; }
.br-tile {
    display: inline-flex; align-items: center; justify-content: center; flex: none;
    background: var(--sl-control); border: 1px solid var(--sl-hairline); color: var(--sl-link);
}
.br-tile-sm { width: 32px; height: 32px; border-radius: var(--sl-r-8); }
.br-tile-md { width: 38px; height: 38px; border-radius: var(--sl-r-10); }
.br-tile-lg { width: 48px; height: 48px; border-radius: var(--sl-r-12); }
.br-path {
    font-family: var(--sl-font-mono); font-size: 11px; color: var(--sl-text-2);
    padding: 6px 9px; border-radius: var(--sl-r-6); background: var(--sl-app);
    border: 1px solid var(--sl-hairline);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0;
}
.br-card-meta { display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--sl-text-2); min-width: 0; }
.br-card-meta > span { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.br-card-meta .br-ic { color: var(--sl-text-3); }
.br-chats { color: var(--sl-text-2); }

/* ─── Gallery ────────────────────────────────────────────────── */
.br-toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.br-search { flex: 1 1 240px; max-width: 420px; }
.br-search input[type="search"]::-webkit-search-cancel-button { filter: grayscale(1) opacity(0.6); }
.br-note { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 12px; color: var(--sl-text-2); }
.br-note .br-ic { color: var(--sl-text-3); }
.br-note a { color: var(--sl-link); text-decoration: none; }
.br-note a:hover { color: var(--sl-link-hover); }
.br-gallery { margin-top: 16px; }
.br-featured {
    display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    border-radius: var(--sl-r-12); overflow: hidden;
    border: 1px solid var(--sl-accent-line); background: var(--sl-card);
}
.br-featured-main { padding: 20px 24px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.br-featured-main .br-body { color: var(--sl-text-2); max-width: 460px; }
.br-kicker-accent { color: var(--sl-link); }
.br-featured-side { padding: 20px 24px; border-left: 1px solid var(--sl-hairline); background: var(--sl-panel); min-width: 0; }
.br-inside { display: flex; flex-direction: column; gap: 7px; margin-top: 10px; font-family: var(--sl-font-mono); font-size: 11.5px; color: var(--sl-text-1); }
.br-inside > div { display: flex; align-items: center; gap: 8px; }
.br-inside .br-ic { color: var(--sl-text-3); }
.br-meta-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--sl-text-2); }
.br-author { display: inline-flex; align-items: center; gap: 6px; }
.br-avatar {
    width: 18px; height: 18px; border-radius: 50%; background: var(--sl-control);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 9px; font-weight: 700; color: var(--sl-text-1);
}
.br-stat { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.br-stat .br-ic { color: var(--sl-text-3); }
.br-stat .br-star-ic { color: var(--br-star); }
.br-featured-actions { display: flex; gap: 8px; margin-top: 6px; }
.br-gallery-grid { margin-top: 14px; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.br-gcard { display: flex; flex-direction: column; gap: 9px; padding: 14px; min-width: 0; }
.br-gcard-top { display: flex; align-items: center; gap: 10px; min-width: 0; }
.br-gcard .br-origin { margin-top: 1px; font-size: 11.5px; }
.br-gdesc { font-size: 12px; line-height: 1.5; color: var(--sl-text-2); flex: 1; }
.br-gcard .br-card-meta { gap: 12px; font-size: 11.5px; }
.br-installed { background: none; border: none; padding: 0; cursor: pointer; font-family: inherit; }
.br-installed .sl-status { font-size: 11.5px; }

/* ─── Chat pane ──────────────────────────────────────────────── */
.br-chat-pane { flex: 1; min-height: 0; display: flex; border-top: 1px solid transparent; }
.br-chat-host { flex: 1; min-width: 0; min-height: 0; display: flex; }

/* ─── Detail ─────────────────────────────────────────────────── */
.br-detail { padding: 22px 40px 40px; }
.br-back {
    display: inline-flex; align-items: center; gap: 6px; background: none; border: none; padding: 0;
    cursor: pointer; font-family: inherit; font-size: 12.5px; font-weight: 600; color: var(--sl-text-2);
}
.br-back:hover { color: var(--sl-text-1); }
.br-detail-head { display: flex; align-items: flex-start; gap: 14px; margin-top: 16px; flex-wrap: wrap; }
.br-detail-id { flex: 1; min-width: 240px; }
.br-detail-name { margin: 0; }
.br-path-row { display: flex; align-items: center; gap: 8px; margin-top: 10px; min-width: 0; }
.br-path-inline { background: var(--sl-panel); border-color: var(--sl-border); color: var(--sl-text-1); max-width: 520px; }
.br-detail-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.br-flash { margin-top: 16px; }
.br-update {
    margin-top: 18px; display: flex; align-items: center; gap: 14px; padding: 14px; flex-wrap: wrap;
    border-radius: var(--sl-r-12); background: var(--sl-card); border: 1px solid var(--sl-accent-line);
}
.br-update > .br-ic { color: var(--sl-link); }
.br-update-text { flex: 1; min-width: 220px; }
.br-update-text .br-small { margin-top: 2px; }
.br-detail-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 16px; margin-top: 20px; align-items: start; }
.br-side { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.br-box { padding: 14px; }
.br-box .br-body { margin-top: 6px; font-size: 12.5px; }
.br-pub { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.br-pub-text { flex: 1; min-width: 180px; }
.br-pub-text .br-small { margin-top: 2px; }
.br-pub-actions { display: flex; gap: 6px; }
.br-stars { display: inline-flex; gap: 2px; }
.br-star {
    width: 28px; height: 28px; border-radius: var(--sl-r-6); border: none; background: transparent;
    color: var(--sl-text-3); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0;
}
.br-star:hover { background: var(--sl-wash); color: var(--br-star); }
.br-star.is-on { color: var(--br-star); }

/* file tree */
.br-tree { border-radius: var(--sl-r-12); border: 1px solid var(--sl-hairline); overflow: hidden; background: var(--sl-card); }
.br-tree-head { display: flex; align-items: center; padding: 10px 14px; background: var(--sl-card); }
.br-legend { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--sl-text-3); }
.br-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--sl-warning); flex: none; }
.br-tree-row {
    display: flex; align-items: center; gap: 8px; padding: 6px 14px; min-height: 28px; box-sizing: border-box;
    border-top: 1px solid oklch(1 0 0 / 0.04); background: var(--sl-app);
}
.br-tree-row.is-file, .br-tree-row.is-more { cursor: pointer; }
.br-tree-row.is-file:hover, .br-tree-row.is-more:hover { background: var(--sl-row-hover); }
.br-tree-row:focus-visible { outline: 1px solid var(--sl-focus); outline-offset: -1px; }
.br-tree-row .br-ic { color: var(--sl-text-3); }
.br-tree-row.is-dir .br-ic { color: var(--sl-text-2); }
.br-tree-name { font-family: var(--sl-font-mono); font-size: 11.5px; color: var(--sl-text-1); flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.br-tree-row.is-more .br-tree-name { color: var(--sl-text-3); }
.br-tree-msg { padding: 12px 14px; font-size: 12px; color: var(--sl-text-3); border-top: 1px solid var(--sl-hairline); }

/* update review */
.br-review { margin-top: 20px; border-radius: var(--sl-r-12); border: 1px solid var(--sl-border); overflow: hidden; }
.br-review-head, .br-review-foot {
    display: flex; align-items: center; gap: 10px; padding: 10px 14px; flex-wrap: wrap; background: var(--sl-card);
}
.br-review-head { border-bottom: 1px solid var(--sl-hairline); }
.br-review-foot { border-top: 1px solid var(--sl-hairline); }
.br-apply-line { flex: 1; min-width: 200px; }
.br-ghost-quiet { color: var(--sl-text-2); }
.br-ghost-quiet:hover { color: var(--sl-text-1); }
.br-review-empty { padding: 14px; font-size: 12.5px; color: var(--sl-text-2); background: var(--sl-app); }
.br-rfile { border-top: 1px solid var(--sl-hairline); }
.br-rfile:first-of-type { border-top: none; }
.br-rfile-head {
    display: flex; align-items: center; gap: 10px; padding: 8px 14px; min-height: 44px; box-sizing: border-box;
    background: var(--sl-panel); cursor: pointer;
}
.br-rfile-head:hover { background: var(--sl-row-hover); }
.br-check { padding: 0; }
.br-check .br-ic svg { width: 11px; height: 11px; }
.br-kind-ic { display: inline-flex; }
.br-kind-ic.is-warning { color: var(--sl-warning); }
.br-kind-ic.is-accent { color: var(--sl-link); }
.br-kind-ic.is-success { color: var(--sl-success); }
.br-kind-ic.is-error { color: var(--sl-error); }
.br-rfile-path { font-family: var(--sl-font-mono); font-size: 12px; color: var(--sl-text-1); min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.br-rfile-head .sl-status { font-size: 11.5px; flex: none; }
.br-diffstat { font-family: var(--sl-font-mono); font-size: 11px; white-space: nowrap; flex: none; }
.br-diffstat .is-add { color: var(--sl-success); }
.br-diffstat .is-del { color: var(--sl-error); }
.br-choice { font-size: 11.5px; color: var(--sl-text-3); white-space: nowrap; width: 100px; text-align: right; flex: none; }
.br-icon-quiet { background: transparent; border-color: transparent; color: var(--sl-text-2); }
.br-icon-quiet:hover { background: var(--sl-wash); color: var(--sl-text-1); }
.br-rfile-body { padding: 4px 14px 14px 44px; display: flex; flex-direction: column; gap: 10px; background: var(--sl-app); }
.br-note-warn { font-size: 12px; line-height: 1.5; color: var(--sl-warning); padding-top: 8px; }
.br-hunk { border-radius: var(--sl-r-8); border: 1px solid var(--sl-hairline); overflow: hidden; }
.br-hunk.is-on { border-color: oklch(0.72 0.13 230 / 0.35); }
.br-hunk-head { display: flex; align-items: center; gap: 9px; padding: 6px 10px; min-height: 32px; box-sizing: border-box; background: var(--sl-card); cursor: pointer; }
.br-hunk-title { font-size: 12px; font-weight: 600; flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.br-overwrites { font-size: 11.5px; font-weight: 600; color: var(--sl-warning); white-space: nowrap; }
.br-hunk-lines { font-family: var(--sl-font-mono); font-size: 11px; line-height: 1.65; padding: 6px 0; background: var(--sl-app); }
.br-hunk:not(.is-on) .br-hunk-lines { opacity: 0.55; }
.br-line { display: flex; gap: 10px; padding: 0 10px; color: var(--sl-text-3); }
.br-line.is-add { background: var(--br-add-bg); color: var(--br-add-fg); }
.br-line.is-del { background: var(--br-del-bg); color: var(--br-del-fg); }
.br-line.is-more { color: var(--sl-text-3); font-style: italic; }
.br-sign { width: 10px; flex: none; opacity: 0.8; }
.br-line-text { white-space: pre-wrap; word-break: break-word; min-width: 0; }

/* modals */
.br-modal { width: 460px; max-width: calc(100vw - 32px); max-height: calc(100vh - 64px); display: flex; flex-direction: column; }
.br-modal.is-wide { width: 760px; }
.br-modal-head { font-size: 14px; }
.br-modal-head.br-mono { font-size: 12.5px; font-weight: 600; }
.br-modal-body { display: flex; flex-direction: column; gap: 12px; overflow: auto; min-height: 0; }
.br-field { display: flex; flex-direction: column; gap: 6px; }
.br-field .sl-input { width: 100%; }
.br-modal-error { font-size: 12px; color: var(--sl-error); }
.br-modal .sl-modal-foot { gap: 8px; }
.br-file-body { display: flex; flex-direction: column; gap: 8px; min-height: 0; }
.br-editor {
    width: 100%; min-height: 360px; box-sizing: border-box; resize: vertical;
    font-family: var(--sl-font-mono); font-size: 12px; line-height: 1.6; tab-size: 4;
}

@media (max-width: 900px) {
    .br-head, .br-body-pad, .br-detail { padding-left: 16px; padding-right: 16px; }
    .br-featured, .br-detail-grid { grid-template-columns: minmax(0, 1fr); }
    .br-featured-side { border-left: none; border-top: 1px solid var(--sl-hairline); }
}

/* ─── Settings → Brain ───────────────────────────────────────── */
.settings-tab[data-tab="brain"] .sfr-title.sl-status { font-size: 13.5px; }
.settings-tab[data-tab="brain"] .brain-mono { font-size: 11px; }

/* ============================================================
   Claude chat — panel (canvas) and page (Brain → Chat)
   ============================================================ */
.agc-ic { display: inline-flex; flex: none; }
.agc-ic svg { display: block; }
.agc-flex { flex: 1; min-width: 0; }

.agc-panel {
    background: var(--sl-raised);
    backdrop-filter: none; -webkit-backdrop-filter: none;
    border: 1px solid oklch(1 0 0 / 0.13);
    border-radius: var(--sl-r-14);
    box-shadow: var(--sl-shadow-pop);
    font-family: var(--sl-font-ui);
    color: var(--sl-text-1);
    overflow: visible;
}
.agc-page {
    display: flex; flex: 1; min-width: 0; min-height: 0;
    background: var(--sl-panel); font-family: var(--sl-font-ui); color: var(--sl-text-1);
    border-top: 1px solid var(--sl-hairline);
}
.agc-main { flex: 1; min-width: 0; min-height: 0; display: flex; flex-direction: column; }

/* sessions sidebar (page) */
.agc-sessions { width: 230px; flex: none; display: flex; flex-direction: column; min-height: 0; background: var(--sl-app); border-right: 1px solid var(--sl-hairline); }
.agc-new-chat { margin: 12px; width: calc(100% - 24px); }
.agc-session-list { flex: 1; min-height: 0; overflow-y: auto; padding: 0 8px 12px; }
.agc-session-group { font-family: var(--sl-font-mono); font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sl-text-3); padding: 10px 8px 5px; }
.agc-session {
    display: flex; flex-direction: column; gap: 2px; width: 100%; text-align: left; padding: 7px 9px;
    border: none; border-radius: var(--sl-r-8); background: transparent; cursor: pointer; font-family: inherit;
}
.agc-session:hover { background: var(--sl-wash); }
.agc-session.is-active { background: var(--sl-selected); }
.agc-session-title { font-size: 12.5px; font-weight: 500; color: var(--sl-text-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.agc-session.is-active .agc-session-title { font-weight: 600; }
.agc-session-brain { font-size: 11px; color: var(--sl-text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* header */
.agc-head { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--sl-hairline); min-width: 0; }
.agc-title { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--sl-text-1); flex: none; }
.agc-title[hidden], .agc-brain-wrap[hidden] { display: none; }
.agc-title svg, .agc-title .agc-ic { color: var(--sl-link); width: 14px; height: 14px; }
.agc-brain-wrap { position: relative; min-width: 0; flex: 0 1 auto; }
.agc-brain-btn {
    display: flex; align-items: center; gap: 8px; height: var(--sl-h); padding: 0 10px; max-width: 260px;
    border-radius: var(--sl-r-8); background: var(--sl-raised); border: 1px solid var(--sl-border);
    color: var(--sl-text-1); cursor: pointer; font-family: inherit; min-width: 0;
}
.agc-panel .agc-brain-btn { background: var(--sl-control); }
.agc-brain-btn:hover { background: var(--sl-quiet-hover); }
.agc-brain-btn.is-open { border-color: var(--sl-accent-line); }
.agc-brain-btn > .agc-ic:first-child { color: var(--sl-link); }
.agc-brain-btn > .agc-ic:last-child { color: var(--sl-text-3); }
.agc-brain-name { font-size: 12.5px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.agc-brain-ver { font-family: var(--sl-font-mono); font-size: 10.5px; color: var(--sl-text-3); flex: none; }
.agc-brain-ver:empty { display: none; }
.agc-brain-menu { position: absolute; top: calc(100% + 4px); left: 0; width: 280px; z-index: 1100; }
.agc-brain-item { height: auto; min-height: 28px; padding: 6px 9px; align-items: center; }
.agc-brain-item-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.agc-brain-item-name { font-size: 12px; font-weight: 600; color: var(--sl-text-1); }
.agc-brain-item-path { font-family: var(--sl-font-mono); font-size: 10px; color: var(--sl-text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.agc-brain-item .agc-check { color: var(--sl-link); }
.agc-brain-item > .agc-ic:first-child { color: var(--sl-text-3); }
.agc-brain-empty { font-size: 12px; color: var(--sl-text-3); padding: 4px 9px 6px; }
.agc-status { display: flex; align-items: center; gap: 6px; flex: 1; min-width: 0; font-size: 11.5px; color: var(--sl-text-2); white-space: nowrap; overflow: hidden; }
.agc-status span { overflow: hidden; text-overflow: ellipsis; }
.agc-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--sl-text-3); flex-shrink: 0; }
.agc-dot[data-state="ready"] { background: var(--sl-success); }
.agc-dot[data-state="waiting"] { background: var(--sl-warning); }
.agc-dot[data-state="off"] { background: var(--sl-error); }
.agc-dot[data-state="busy"] { background: var(--sl-link); animation: agc-pulse 1.2s ease-in-out infinite; }
.agc-head-actions { display: flex; align-items: center; gap: 2px; flex-shrink: 0; }
.agc-transport {
    height: var(--sl-h-sm); font-family: inherit; font-size: 11.5px; font-weight: 600; padding: 0 8px; margin-right: 4px;
    border-radius: var(--sl-r-6); border: 1px solid var(--sl-border); background: var(--sl-panel); color: var(--sl-text-1);
    cursor: pointer; max-width: 150px;
}
.agc-transport:focus-visible { outline: none; border-color: var(--sl-focus); }
.agc-icon-btn {
    width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; padding: 0;
    border-radius: var(--sl-r-8); border: none; background: transparent; color: var(--sl-text-2); cursor: pointer;
    transition: background 0.12s ease, color 0.12s ease;
}
.agc-icon-btn:hover { background: var(--sl-wash); color: var(--sl-text-1); }
.agc-icon-btn:active { transform: none; }
.agc-icon-btn:focus-visible { outline: 1px solid var(--sl-focus); outline-offset: -1px; }
.agc-icon-btn[hidden] { display: none; }
.agc-icon-btn svg { width: 15px; height: 15px; }

/* transcript */
.agc-body { flex: 1; overflow-y: auto; max-height: 300px; padding: 14px 14px; display: block; }
.agc-page .agc-body { max-height: none; padding: 18px 20px; }
.agc-col { display: flex; flex-direction: column; gap: 12px; }
.agc-page .agc-col { max-width: 760px; margin: 0 auto; }
.agc-empty { margin: 16px auto; text-align: center; color: var(--sl-text-2); font-size: 12.5px; line-height: 1.55; max-width: 320px; display: flex; flex-direction: column; gap: 4px; }
.agc-page .agc-empty { margin-top: 18vh; }
.agc-empty-title { font-size: 13.5px; font-weight: 600; color: var(--sl-text-1); margin-bottom: 2px; }
.agc-msg { display: flex; flex-direction: column; gap: 4px; max-width: 88%; }
.agc-msg.agc-user { align-self: flex-end; align-items: flex-end; }
.agc-msg.agc-assistant { align-self: flex-start; max-width: 100%; }
.agc-msg.agc-system { align-self: center; max-width: 100%; align-items: center; }
.agc-bubble { font-size: 13px; line-height: 1.55; color: var(--sl-text-1); overflow-wrap: anywhere; min-width: 0; }
.agc-user .agc-bubble {
    padding: 8px 12px; border-radius: 12px 12px 4px 12px;
    background: oklch(0.72 0.13 230 / 0.16); border: 1px solid oklch(0.72 0.13 230 / 0.25);
}
.agc-assistant .agc-bubble { background: transparent; border: none; padding: 2px 0 0; }
.agc-agent-line { display: flex; gap: 10px; align-items: flex-start; }
.agc-avatar {
    width: 24px; height: 24px; border-radius: var(--sl-r-6); flex: none;
    background: oklch(0.72 0.1 230 / 0.18); color: var(--sl-link);
    display: inline-flex; align-items: center; justify-content: center;
}
.agc-assistant .agc-meta { padding-left: 34px; }
.agc-system .agc-bubble { color: var(--sl-text-2); font-size: 12px; text-align: center; padding: 2px 6px; background: transparent; border: none; }
.agc-bubble p { margin: 0; }
.agc-bubble p + p, .agc-bubble p + .agc-code, .agc-bubble .agc-code + p { margin-top: 6px; }
.agc-code {
    margin: 0; padding: 8px 10px; border-radius: var(--sl-r-8);
    background: var(--sl-app); border: 1px solid var(--sl-hairline);
    font-family: var(--sl-font-mono); font-size: 11.5px; line-height: 1.5; white-space: pre-wrap; overflow-x: auto;
}
.agc-meta { font-size: 11px; color: var(--sl-text-3); }
.agc-meta[data-state="failed"] { color: var(--sl-error); }
.agc-meta[data-state="pending"] { color: var(--sl-warning); }
.agc-tool {
    flex-direction: row; align-items: center; gap: 8px; align-self: stretch; max-width: 100%;
    padding: 5px 10px; border-radius: var(--sl-r-8); background: var(--sl-card); border: 1px solid var(--sl-hairline);
    font-size: 12px; color: var(--sl-text-2);
}
.agc-tool > .agc-ic { color: var(--sl-link); }
.agc-tool-text { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.agc-tool-count { font-family: var(--sl-font-mono); font-size: 11px; color: var(--sl-text-3); }
.agc-chips { display: flex; flex-wrap: wrap; gap: 4px; }
.agc-chip {
    display: inline-flex; align-items: center; gap: 5px; height: 24px; padding: 0 8px; box-sizing: border-box;
    border-radius: var(--sl-r-6); font-size: 11.5px; background: var(--sl-quiet); border: 1px solid var(--sl-hairline);
    color: var(--sl-text-2); max-width: 100%;
}
.agc-chip > span:first-child { font-family: var(--sl-font-mono); font-size: 10.5px; color: var(--sl-text-3); }
.agc-chip b { color: var(--sl-text-1); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 160px; }
.agc-chip-x { all: unset; cursor: pointer; color: var(--sl-text-3); display: inline-flex; padding: 2px; border-radius: 4px; }
.agc-chip-x:hover { color: var(--sl-text-1); background: var(--sl-wash); }

/* working… + Stop */
.agc-busy { display: flex; align-items: center; gap: 8px; padding: 0 14px 8px; font-size: 12px; color: var(--sl-text-2); }
.agc-busy[hidden] { display: none; }
.agc-page .agc-busy { width: 100%; max-width: 800px; margin: 0 auto; padding: 0 20px 8px; box-sizing: border-box; }
.agc-busy > .agc-ic { color: var(--sl-link); animation: agc-spin 0.9s linear infinite; }
.agc-busy-text { flex: 0 1 auto; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@keyframes agc-spin { to { transform: rotate(360deg); } }

/* hint */
.agc-hint {
    margin: 0 14px 8px; padding: 10px 12px; border-radius: var(--sl-r-10);
    background: var(--sl-card); border: 1px solid var(--sl-border); border-left: 2px solid var(--sl-warning);
    color: var(--sl-text-1); font-size: 12px; line-height: 1.5; display: flex; flex-direction: column; gap: 8px;
}
.agc-page .agc-hint { max-width: 760px; width: calc(100% - 40px); margin: 0 auto 8px; box-sizing: border-box; }
.agc-hint[hidden] { display: none; }
.agc-hint[data-tone="error"] { border-left-color: var(--sl-error); background: var(--sl-card); }
.agc-hint code {
    font-family: var(--sl-font-mono); font-size: 11px; background: var(--sl-app); border: 1px solid var(--sl-hairline);
    padding: 4px 7px; border-radius: var(--sl-r-6); user-select: all; overflow-wrap: anywhere;
}
.agc-hint-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* composer */
.agc-compose { border-top: none; padding: 0 12px 12px; display: block; }
.agc-page .agc-compose { padding: 0 20px 16px; }
.agc-compose-box {
    background: var(--sl-quiet); border: 1px solid oklch(1 0 0 / 0.1); border-radius: var(--sl-r-12);
    padding: 8px 10px; display: flex; flex-direction: column; gap: 6px;
}
.agc-page .agc-compose-box { max-width: 760px; margin: 0 auto; }
.agc-compose-box:focus-within { border-color: var(--sl-focus); }
.agc-attach-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.agc-attach-row[hidden] { display: none; }
.agc-input-row { display: flex; gap: 8px; align-items: flex-end; }
.agc-input {
    flex: 1; resize: none; min-height: 22px; max-height: 160px; padding: 2px; border: none; border-radius: 0;
    background: transparent; color: var(--sl-text-1); font-family: var(--sl-font-ui); font-size: 13px; line-height: 1.5;
}
.agc-input::placeholder { color: oklch(0.5 0.005 250); }
.agc-input:focus { outline: none; border-color: transparent; }
.agc-compose-foot { display: flex; align-items: center; gap: 6px; }
.agc-compose-foot .agc-icon-btn { width: 28px; height: 28px; }
.agc-keys { font-family: var(--sl-font-mono); font-size: 10px; color: var(--sl-text-3); white-space: nowrap; }
.agc-panel .agc-keys { display: none; }
.agc-send {
    width: 32px; height: 32px; flex: none; padding: 0; display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--sl-r-8); border: none; background: oklch(0.72 0.13 230 / 0.35); color: var(--sl-on-accent);
    cursor: pointer; transition: background 0.12s ease;
}
.agc-send.is-ready { background: var(--sl-accent); }
.agc-send.is-ready:hover { filter: brightness(1.07); background: var(--sl-accent); color: var(--sl-on-accent); border-color: transparent; }
.agc-send:hover { background: oklch(0.72 0.13 230 / 0.45); color: var(--sl-on-accent); }
.agc-send:active { transform: none; }
.agc-send:focus-visible { outline: 1px solid var(--sl-focus); outline-offset: 2px; }

/* edge tab, activity pill, question card, unread badge */
.agc-tab {
    background: var(--sl-raised); backdrop-filter: none; -webkit-backdrop-filter: none;
    border: 1px solid var(--sl-border); border-right: none; box-shadow: var(--sl-shadow-float); color: var(--sl-text-2);
}
.agc-tab:hover { color: var(--sl-text-1); background: var(--sl-control); }
.agc-tab svg { color: var(--sl-link); }
.agc-badge { background: var(--sl-accent); color: var(--sl-on-accent); font-family: var(--sl-font-mono); font-size: 10px; border-radius: 8px; }
.agc-activity-pill {
    background: var(--sl-raised); backdrop-filter: none; -webkit-backdrop-filter: none;
    border: 1px solid oklch(1 0 0 / 0.13); border-radius: var(--sl-r-10); box-shadow: var(--sl-shadow-pop);
    font-family: var(--sl-font-ui); font-size: 12.5px; color: var(--sl-text-1); padding: 0 12px; height: 32px;
}
.agc-activity-pill:hover { background: var(--sl-control); border-color: var(--sl-accent-line); }
.agc-pill-key { font-family: var(--sl-font-mono); font-size: 10px; border-radius: 5px; background: transparent; border: 1px solid var(--sl-border); color: var(--sl-text-3); }
.agc-question-card {
    background: var(--sl-raised); backdrop-filter: none; -webkit-backdrop-filter: none;
    border: 1px solid oklch(1 0 0 / 0.13); border-radius: var(--sl-r-14); box-shadow: var(--sl-shadow-modal);
    font-family: var(--sl-font-ui); padding: 14px;
}
.agc-q-header { font-family: var(--sl-font-mono); font-size: 9.5px; letter-spacing: 0.12em; font-weight: 500; color: var(--sl-text-3); }
.agc-q-text { font-size: 13.5px; font-weight: 600; color: var(--sl-text-1); }
.agc-q-btn {
    min-height: 32px; padding: 6px 10px; border-radius: var(--sl-r-8); font-size: 12.5px;
    background: var(--sl-card); border: 1px solid var(--sl-hairline); color: var(--sl-text-1);
}
.agc-q-btn:hover { background: var(--sl-quiet-hover); border-color: var(--sl-accent-line); color: var(--sl-text-1); }
.agc-q-num { font-family: var(--sl-font-mono); font-size: 10.5px; border-radius: 5px; background: transparent; border: 1px solid var(--sl-border); color: var(--sl-text-3); }
.agc-q-input {
    height: 32px; box-sizing: border-box; padding: 0 11px; border-radius: var(--sl-r-8);
    background: var(--sl-panel); border: 1px solid var(--sl-border); color: var(--sl-text-1); font-family: var(--sl-font-ui); font-size: 12.5px;
}
.agc-q-input:focus { outline: none; border-color: var(--sl-focus); }
.agc-q-submit {
    height: 32px; padding: 0 14px; border-radius: var(--sl-r-8); border: none;
    background: var(--sl-accent); color: var(--sl-on-accent); font-family: var(--sl-font-ui); font-size: 12px; font-weight: 700;
}
.agc-q-submit:hover { background: var(--sl-accent); filter: brightness(1.07); }

/* sessions toggle — only when the sidebar has no room (below) */
.agc-sessions-toggle { display: none; }

@media (max-width: 720px) {
    /* The sidebar drops down from the chat header as a sheet: the header's
       Chats button opens it, picking a chat / New chat / a tap outside closes it. */
    .agc-page { position: relative; }
    .agc-sessions { display: none; }
    .agc-sessions-toggle { display: inline-flex; }
    .agc-page.is-sessions-open .agc-sessions {
        display: flex; position: absolute; z-index: 30;
        top: 52px; left: 8px; right: 8px; width: auto; max-height: min(70%, 460px);
        background: var(--sl-raised); border: 1px solid var(--sl-line-pop);
        border-radius: var(--sl-r-12); box-shadow: var(--sl-shadow-pop);
    }
    .agc-page.is-sessions-open .agc-sessions-toggle { background: var(--sl-selected); color: var(--sl-text-1); }
    .agc-page .agc-session { min-height: 44px; }
}