/* Studio agent (agentapp). Brand roles from static/brand/tokens.css: neutral cards,
   Ink tiles with amber letters, amber fill only for the panel's one main button. */

/* ---------------------------------------------------------------- sidebar section */
/* Sizes follow the sidebar rows (templates/sidebar.html): 15px labels, 22px icons, 16px row inset. */
.pt-agent { padding: .75rem 1rem .875rem; border-bottom: 1px solid var(--pt-border); display: grid; grid-template-columns: minmax(0, 1fr); gap: .625rem; }
.pt-agent-head { display: flex; align-items: center; gap: .5rem; min-height: 2.5rem; padding-inline: 1rem; }
.pt-agent-head .pt-tile { width: 1.375rem; height: 1.375rem; font-size: .5625rem; }
.pt-agent-mark { position: relative; display: inline-flex; text-decoration: none; }
.pt-agent-mark:focus-visible { outline: 2px solid var(--pt-focus-ring); outline-offset: 2px; border-radius: 6px; }
.pt-agent-dot { position: absolute; top: -3px; right: -3px; width: .55rem; height: .55rem; border-radius: 50%;
    background: var(--pt-accent); box-shadow: 0 0 0 2px var(--pt-surface); }
.pt-agent-title { margin: 0; font: 600 .9375rem/1.3 var(--pt-font-text); color: var(--pt-text); }
.pt-agent-new { margin-left: auto; font-size: .8125rem; color: var(--pt-text-muted); }

/* A card is a shaded head (tile + title) and plain content under it.
   The content starts at the tile's left edge, so it gets the card's whole width. */
.pt-agent-cards { list-style: none; margin: 0; padding: 0; display: grid; gap: .875rem; }
.pt-agent-card { display: grid; gap: .4rem; min-width: 0; font: 400 .875rem/1.5 var(--pt-font-text); color: var(--pt-text); word-break: keep-all; }
.pt-agent-card > :not(.pt-agent-card-head) { margin-inline: 1rem; }
.pt-agent-card-head { display: flex; align-items: center; gap: .5rem; min-height: 2.5rem; padding: .375rem 1rem;
    border-radius: var(--pt-radius-md); background: var(--pt-surface-2); }
.pt-agent-card .pt-tile { position: relative; flex: none; width: 1.375rem; height: 1.375rem; font-size: .5625rem; border-radius: 6px; }
/* Unread: an amber dot on the tile. */
.pt-agent-card.is-new .pt-tile::after { content: ""; position: absolute; top: -3px; right: -3px; width: .5rem; height: .5rem;
    border-radius: 50%; background: var(--pt-accent); box-shadow: 0 0 0 2px var(--pt-surface-2); }
.pt-agent-card-title { min-width: 0; font-size: .9375rem; font-weight: 600; line-height: 1.35; color: var(--pt-text); text-decoration: none; overflow-wrap: anywhere; }
a.pt-agent-card-title:hover { text-decoration: underline; color: var(--pt-text); }
.pt-agent-card-title.is-danger { color: var(--pt-danger); }
.pt-agent-meta { font-size: .8125rem; line-height: 1.45; color: var(--pt-text-muted); overflow-wrap: anywhere; }
.pt-agent-quote { font-family: var(--pt-font-mono); }
.pt-agent-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: .25rem; }
.pt-agent-thumbs:has(> :only-child) { grid-template-columns: minmax(0, 1fr); max-width: 10rem; }
.pt-agent-thumbs img, .pt-agent-thumb-empty { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 6px;
    background: var(--pt-surface); }
.pt-agent-thumb-empty { display: flex; align-items: center; justify-content: center; font: 800 .625rem/1 'Bricolage Grotesque', var(--pt-font-text);
    color: var(--pt-text-muted); border: 1px solid var(--pt-border); }
.pt-agent-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; }
.pt-btn.pt-agent-btn { min-height: 2.25rem; padding: 0 .8rem; font-size: .8125rem; border-radius: var(--pt-radius-sm); }
.pt-agent-link { border: 0; background: none; padding: .25rem; font: inherit; font-size: .8125rem; color: var(--pt-text-muted); cursor: pointer; }
.pt-agent-link:hover { color: var(--pt-text); text-decoration: underline; }
.pt-agent-link:focus-visible, .pt-agent-x:focus-visible { outline: 2px solid var(--pt-focus-ring); outline-offset: 2px; }
.pt-agent-empty { font-size: .8125rem; color: var(--pt-text-muted); padding: .25rem 1rem; }
.pt-agent-all { justify-self: start; padding-inline: 1rem; font-size: .8125rem; color: var(--pt-accent-text); }

/* Recent chats (agentapp.chats) above the cards: one 36px row each, icon on the card tiles' line. */
.pt-agent-chats { display: grid; grid-template-columns: minmax(0, 1fr); gap: .125rem; }
.pt-agent-sub { display: flex; align-items: baseline; gap: .5rem; padding-inline: 1rem; }
.pt-agent-sub-title { margin: 0; font: 600 .8125rem/1.4 var(--pt-font-text); color: var(--pt-text-muted); }
.pt-agent-sub-all { margin-left: auto; font-size: .8125rem; color: var(--pt-accent-text); }
.pt-agent-chat-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr); }
.pt-agent-chat { display: flex; align-items: center; gap: .5rem; min-height: 2.25rem; padding: 0 1rem; border-radius: var(--pt-radius-md);
    color: var(--pt-text); text-decoration: none; font-size: .875rem; }
.pt-agent-chat:hover { background: var(--pt-surface-2); color: var(--pt-text); text-decoration: none; }
.pt-agent-chat:focus-visible { outline: 2px solid var(--pt-focus-ring); outline-offset: -2px; }
.pt-agent-chat .material-icons { flex: none; width: 1.375rem; font-size: 1.125rem; text-align: center; color: var(--pt-text-muted); }
.pt-agent-chat-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pt-agent-chat-time { flex: none; font-size: .75rem; color: var(--pt-text-muted); }
@media (max-width: 767px) { .pt-agent-chat { min-height: 2.75rem; } }

/* Visitors: a log-in prompt in place of the cards (agentapp/guest.html), also in the Studio chat. */
.pt-agent-guest { display: grid; gap: .6rem; }
.pt-agent-guest .pt-agent-meta, p.pt-agent-guest { margin: 0; }
.pt-agent.is-guest .pt-agent-guest { padding-inline: 1rem; }

/* PC icon rail (templates/sidebar.html, html.pt-sb-mini): only the tile and the dot stay. */
@media (min-width: 768px) {
    html.pt-sb-mini .pt-agent { padding: .6rem 0; justify-items: center; }
    html.pt-sb-mini .pt-agent > :not(.pt-agent-head),
    html.pt-sb-mini .pt-agent-title,
    html.pt-sb-mini .pt-agent-new { display: none; }
}

/* ---------------------------------------------------------------- detail panel */
.pt-agent-panel { position: fixed; z-index: 60; right: 1rem; top: 5rem; width: min(22.5rem, calc(100vw - 2rem));
    max-height: calc(100vh - 6rem); overflow-y: auto; padding: 1rem; display: grid; gap: .75rem;
    border-radius: var(--pt-radius-lg); background: var(--pt-surface); color: var(--pt-text);
    border: 1px solid var(--pt-border); box-shadow: 0 10px 30px rgba(0, 0, 0, .18);
    font: 400 .875rem/1.55 var(--pt-font-text); }
.pt-agent-panel > div { display: grid; gap: .75rem; }
.pt-agent-panel p { margin: 0; }
.pt-agent-panel-head { display: flex; align-items: center; gap: .6rem; }
.pt-agent-panel-head h2 { margin: 0; font: 600 1rem/1.3 var(--pt-font-text); }
.pt-agent-x { margin-left: auto; width: 2.25rem; height: 2.25rem; display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--pt-radius-sm); border: 1px solid var(--pt-border); background: none; color: var(--pt-text-muted); cursor: pointer; }
.pt-agent-x .material-icons { font-size: 1.1rem; }
.pt-agent-chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.pt-agent-chip { display: inline-flex; align-items: center; height: 1.6rem; padding: 0 .65rem; border-radius: var(--pt-radius-pill);
    border: 1px solid var(--pt-border-strong); font-size: .75rem; }
.pt-agent-chip.is-mono { font-family: var(--pt-font-mono); }
.pt-agent-prompt { padding: .6rem .75rem; border-radius: var(--pt-radius-md); background: var(--pt-accent-soft);
    font: var(--pt-text-mono); overflow-wrap: anywhere; white-space: pre-wrap; }
.pt-agent-prompt.is-negative { background: var(--pt-surface-2); }
.pt-agent-prompt.is-lyrics { background: var(--pt-surface-2); max-height: 14rem; overflow-y: auto; }
.pt-agent-panel-thumb { width: 100%; max-height: 10rem; object-fit: cover; border-radius: var(--pt-radius-md); }
.pt-agent-link[data-agent-mute] { justify-self: start; padding-inline: 0; }
.pt-agent-prompt .pt-agent-meta { display: block; margin-bottom: .15rem; font-family: var(--pt-font-text); }
.pt-agent-error { color: var(--pt-danger); }
@media (max-width: 767px) {
    /* Phones: a sheet from the bottom. */
    .pt-agent-panel { left: 0; right: 0; top: auto; bottom: 0; width: auto; max-height: 80vh;
        border-radius: var(--pt-radius-lg) var(--pt-radius-lg) 0 0;
        padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px)); }
}

/* ---------------------------------------------------------------- list page */
.pt-agent-page { max-width: 40rem; margin: 0 auto; padding: 1rem; display: grid; gap: .75rem; }
.pt-agent-page .pt-page-title { margin: 0; }
.pt-agent-cards.is-page { gap: 1.25rem; }
.pt-agent-cards.is-page .pt-agent-card { font-size: .9375rem; }
.pt-agent-cards.is-page .pt-agent-thumbs { max-width: 18rem; }

/* ---------------------------------------------------------------- kept chats (chats.html, chat_detail.html) */
.pt-chats-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem 1rem; }
.pt-chats-top .pt-agent-link { margin-left: auto; }
.pt-chats-search { display: flex; align-items: center; gap: .5rem; padding: 0 .9rem; min-height: 2.75rem;
    border: 1px solid var(--pt-border-strong); border-radius: var(--pt-radius-pill); background: var(--pt-surface); }
.pt-chats-search:focus-within { box-shadow: 0 0 0 2px var(--pt-focus-ring); }
.pt-chats-search .material-icons { font-size: 1.25rem; color: var(--pt-text-muted); }
.pt-chats-search input { flex: 1; min-width: 0; border: 0; outline: none; background: transparent; color: var(--pt-text); font: inherit; font-size: .9375rem; }
.pt-chats { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.pt-chats-item { display: grid; gap: .4rem; padding: .85rem 1rem; border: 1px solid var(--pt-border); border-radius: var(--pt-radius-lg);
    background: var(--pt-surface); }
.pt-chats-head { display: flex; align-items: center; gap: .5rem; min-width: 0; }
.pt-chats-icon { flex: none; font-size: 1.25rem; color: var(--pt-text-muted); }
.pt-chats-title { flex: 1; min-width: 0; font-weight: 600; color: var(--pt-text); text-decoration: none; overflow-wrap: anywhere; word-break: keep-all; }
a.pt-chats-title:hover { color: var(--pt-text); text-decoration: underline; }
.pt-chats-time { flex: none; }
.pt-chats-reply { margin: 0; font-size: .875rem; color: var(--pt-text-muted); overflow-wrap: anywhere; word-break: keep-all; }
.pt-chats-prompt { margin: 0; padding: .45rem .7rem; border-radius: var(--pt-radius-md); background: var(--pt-surface-2);
    font: var(--pt-text-mono); font-size: .8125rem; overflow-wrap: anywhere; }
.pt-chats-pages { display: flex; align-items: center; justify-content: center; gap: .75rem; }
.pt-chats-back { display: inline-flex; align-items: center; gap: .25rem; justify-self: start; padding-inline: 0; text-decoration: none; }
.pt-chats-back .material-icons { font-size: 1.1rem; }
.pt-chats-head.is-page { align-items: flex-start; }
.pt-chats-head.is-page .pt-chats-icon { margin-top: .4rem; font-size: 1.75rem; }
.pt-chats-head.is-page .pt-page-title { margin: 0; overflow-wrap: anywhere; }
.pt-chats-log { list-style: none; margin: .5rem 0 0; padding: 1rem; display: grid; gap: .75rem; border-radius: var(--pt-radius-lg);
    background: var(--pt-fog); border: 1px solid var(--pt-border); font: 400 .9rem/1.5 var(--pt-font-text); }
html.dark .pt-chats-log { background: var(--pt-surface-2); }
.pt-chats-log .pt-agent-prompt { font-size: .8125rem; }
.pt-chats-reuse { justify-self: start; padding-inline: 0; }
.pt-chat-msg.is-user .pt-chats-reuse { justify-self: end; }
.pt-chats-page form { margin: 0; }

/* ---------------------------------------------------------------- Studio chat */
/* The chat sits above the settings panel (genapp gen.css .gen-set): talking happens here, what Generate
   sends lives below. Park (2026-10-10): the chat box looked like the prompt box, so the chat panel gets a
   warm amber ground and border and its message box an amber outline; the panel below stays neutral.
   The Generate button keeps the screen's only amber fill. */
.pt-chat { --pt-chat-bg: color-mix(in srgb, var(--pt-accent) 8%, var(--pt-surface));
    --pt-chat-line: color-mix(in srgb, var(--pt-accent) 55%, var(--pt-surface));
    display: grid; gap: .65rem; padding: 1rem 1.25rem 1.1rem;
    border-radius: var(--gen-radius, var(--pt-radius-lg)); background: var(--pt-chat-bg); color: var(--pt-text);
    border: 1px solid var(--pt-chat-line); box-shadow: 0 6px 20px color-mix(in srgb, var(--pt-accent) 12%, transparent);
    font: 400 .9rem/1.5 var(--pt-font-text); }
html.dark .pt-chat { --pt-chat-bg: color-mix(in srgb, var(--pt-accent) 10%, var(--pt-surface));
    --pt-chat-line: color-mix(in srgb, var(--pt-accent) 45%, var(--pt-surface)); box-shadow: none; }
.pt-chat-head { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; min-height: 2.25rem; }
.pt-chat-head .pt-tile { width: 1.875rem; height: 1.875rem; font-size: .75rem; border-radius: 8px; }
.pt-chat-title { margin: 0; font: 700 1.05rem/1.3 var(--pt-font-text); color: var(--pt-text); }
.pt-chat-model { min-width: 0; font-size: .8rem; color: var(--pt-text-muted); overflow-wrap: anywhere; }
.pt-chat-new { display: inline-flex; align-items: center; gap: .3rem; min-height: 2rem; padding: 0 .7rem; border-radius: var(--pt-radius-pill);
    border: 1px solid var(--pt-border-strong); background: transparent; color: var(--pt-text); font-size: .8rem; cursor: pointer; }
.pt-chat-new[hidden] { display: none; }
a.pt-chat-new { text-decoration: none; }
a.pt-chat-new:hover { color: var(--pt-text); background: var(--pt-surface); }
.pt-chat-new .material-icons { font-size: 1rem; }
.pt-chat-log { display: grid; gap: .6rem; max-height: 22rem; overflow-y: auto; overscroll-behavior: contain; }
.pt-chat-hello { margin: 0; color: var(--pt-text-muted); }
.pt-chat-msg { display: flex; gap: .5rem; align-items: flex-start; min-width: 0; }
.pt-chat-msg .pt-tile { flex: none; width: 1.5rem; height: 1.5rem; font-size: .6rem; border-radius: 6px; margin-top: .15rem; }
.pt-chat-body { display: grid; gap: .4rem; min-width: 0; max-width: 46rem; }
.pt-chat-text { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; word-break: keep-all; }
.pt-chat-msg.is-user { justify-content: flex-end; }
.pt-chat-msg.is-user .pt-chat-body { padding: .45rem .8rem; border-radius: 1rem 1rem .3rem 1rem; background: var(--pt-surface);
    border: 1px solid var(--pt-border); }
.pt-chat-changes { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem; }
.pt-chat-change { display: inline-flex; align-items: center; gap: .3rem; height: 1.6rem; padding: 0 .6rem; border-radius: var(--pt-radius-pill);
    background: var(--pt-accent-soft); font-size: .75rem; font-weight: 600; }
.pt-chat-change::before { content: ""; width: .4rem; height: .4rem; border-radius: 50%; background: var(--pt-accent); }
.pt-chat-undo, .pt-agent-mark-undo { border: 0; background: none; padding: .2rem .3rem; font: inherit; font-size: .8rem;
    color: var(--pt-text); text-decoration: underline; cursor: pointer; }
.pt-chat-undo:disabled { color: var(--pt-text-muted); text-decoration: none; cursor: default; }
.pt-chat-warnings { margin: 0; padding-left: 1.1rem; font-size: .8rem; color: var(--pt-text-muted); }
.pt-chat-status { margin: 0; font-size: .85rem; color: var(--pt-text-muted); }
.pt-chat-status.is-error { color: var(--pt-danger); }
.pt-chat[aria-busy="true"] .pt-chat-status::before { content: ""; display: inline-block; width: .7rem; height: .7rem; margin-right: .4rem;
    border-radius: 50%; border: 2px solid var(--pt-border-strong); border-top-color: var(--pt-text); vertical-align: -1px;
    animation: pt-agent-spin .8s linear infinite; }
@keyframes pt-agent-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .pt-chat[aria-busy="true"] .pt-chat-status::before { animation: none; } }
.pt-chat-quick { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; }
.pt-chat-chip { min-height: 2rem; padding: .2rem .8rem; border-radius: var(--pt-radius-pill); border: 1px solid var(--pt-border-strong);
    background: var(--pt-surface); color: var(--pt-text); font-size: .8rem; cursor: pointer; }
.pt-chat-chip:hover { background: var(--pt-accent-soft); }
/* The suggestion that linked here (?improve=1) points at its chip. */
.pt-chat-chip.is-suggested { border-color: var(--pt-accent); box-shadow: inset 0 0 0 1px var(--pt-accent); background: var(--pt-accent-soft); font-weight: 600; }
.pt-chat-method { margin-left: auto; max-width: 13rem; font-size: .8rem; }
.pt-chat-method[hidden] { display: none; }
.pt-chat-ask { display: flex; align-items: flex-end; gap: .5rem; padding: .45rem .45rem .45rem 1.1rem; border-radius: 1.5rem;
    background: var(--pt-surface); border: 2px solid var(--pt-accent);
    box-shadow: 0 2px 10px color-mix(in srgb, var(--pt-accent) 22%, transparent); }
.pt-chat-ask:focus-within { box-shadow: 0 0 0 3px color-mix(in srgb, var(--pt-accent) 35%, transparent); }
.pt-chat-input { flex: 1; min-width: 0; min-height: 2.25rem; max-height: 10rem; padding: .45rem 0; border: 0; outline: none; resize: none;
    background: transparent; color: var(--pt-text); font: inherit; font-size: .95rem; line-height: 1.45; }
.pt-chat-send { flex: none; display: inline-flex; align-items: center; justify-content: center; width: 2.25rem; height: 2.25rem;
    border: 0; border-radius: 50%; background: var(--pt-ink); color: #fff; cursor: pointer; }
html.dark .pt-chat-send { background: var(--pt-paper); color: var(--pt-ink); }
.pt-chat-send:disabled { opacity: .5; cursor: progress; }
.pt-chat-send:focus-visible, .pt-chat-chip:focus-visible, .pt-chat-new:focus-visible, .pt-chat-undo:focus-visible,
.pt-agent-mark-undo:focus-visible { outline: 2px solid var(--pt-focus-ring); outline-offset: 2px; }
.pt-chat-cost { margin: -.2rem 0 0; font-size: .75rem; color: var(--pt-text-muted); }
.pt-chat .pt-agent-guest { padding: .1rem 0; }
@media (max-width: 640px) {
    .pt-chat { padding: .85rem .9rem 1rem; }
    .pt-chat-log { max-height: 15rem; }
    .pt-chat-method { margin-left: 0; }
}

/* A field the agent changed: a soft amber ground and a mark with its own Undo, until the member edits it. */
textarea.pt-agent-changed { background-color: color-mix(in srgb, var(--pt-accent) 9%, var(--gen-bg, var(--pt-surface)));
    border-color: var(--pt-accent); }
/* templates/header.html gives dark textareas a ground with !important; this one outranks it. */
html.dark textarea.pt-agent-changed:not(:disabled):not([readonly]) {
    background-color: color-mix(in srgb, var(--pt-accent) 10%, var(--pt-surface)) !important; border-color: var(--pt-accent) !important; }
.pt-agent-mark-chip { display: inline-flex; align-items: center; gap: .3rem; height: 1.6rem; padding: 0 .2rem 0 .6rem; margin: 0 0 .35rem;
    border-radius: var(--pt-radius-pill); background: var(--pt-accent-soft); font-size: .75rem; font-weight: 600; color: var(--pt-text); }
.gen-field-head .pt-agent-mark-chip, .gen-row .pt-agent-mark-chip { margin: 0 .3rem 0 0; }
.pt-agent-mark-dot { width: .45rem; height: .45rem; border-radius: 50%; background: var(--pt-accent); }
.pt-agent-mark-undo { font-size: .75rem; }

/* Publish page: "Suggest a title" under the title box. */
.pt-title-suggest { display: grid; gap: .5rem; margin: -.25rem 0 1rem; }
.pt-title-row { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .75rem; }
.pt-title-ask { --pt-title-bg: color-mix(in srgb, var(--pt-accent) 45%, var(--pt-surface));
    display: inline-flex; align-items: center; gap: .35rem; height: 2.25rem; padding: 0 .9rem;
    border: 1px solid var(--pt-accent); border-radius: var(--pt-radius-pill); background: var(--pt-title-bg);
    color: var(--pt-text); font-size: .85rem; font-weight: 600; }
html.dark .pt-title-ask { --pt-title-bg: color-mix(in srgb, var(--pt-accent) 30%, var(--pt-surface)); }
.pt-title-ask .material-icons { font-size: 1.1rem; color: var(--pt-accent-text); }
html.dark .pt-title-ask .material-icons { color: var(--pt-amber-200); }
.pt-title-ask:hover { background: color-mix(in srgb, var(--pt-accent) 65%, var(--pt-surface)); }
html.dark .pt-title-ask:hover { background: color-mix(in srgb, var(--pt-accent) 42%, var(--pt-surface)); }
.pt-title-ask:disabled { opacity: .6; cursor: progress; }
.pt-title-list { display: flex; flex-wrap: wrap; gap: .4rem; }
.pt-title-list[hidden] { display: none; }
.pt-title-pick { min-height: 2rem; padding: .3rem .8rem; border: 1px solid var(--pt-border-strong);
    border-radius: var(--pt-radius-pill); background: var(--pt-surface); color: var(--pt-text);
    font-size: .85rem; text-align: left; overflow-wrap: anywhere; }
.pt-title-pick:hover, .pt-title-pick[aria-pressed="true"] { border-color: var(--pt-accent); background: var(--pt-accent-soft); }
.pt-title-ask:focus-visible, .pt-title-pick:focus-visible { outline: 2px solid var(--pt-focus-ring); outline-offset: 2px; }