/* Laya-Heart, local web page.
   An evening palette: plum night (dawn lavender in light mode), an ember rose for you and the words
   you send, a violet for Laya. One signature: Laya's read hangs off each of the partner's messages
   on a thin thread; older reads fold into one-line tags, so the chat shows how the mood went.
   Everything else stays quiet: one top bar, two panels, no repeated hints. */

:root {
  --bg: #f7f3fa;
  --surface: rgb(255 255 255 / 0.86);
  --card: #ffffff;
  --sunk: #f2ecf6;
  --line: #e6ddef;
  --line-2: #d6cae3;
  --ink: #221a2e;
  --ink-2: #5b4f69;
  --ink-3: #716680;
  --rose: #d42f64;
  --violet: #6b58e6;
  --on-violet: #ffffff;
  --amber: #a86400;    /* amber as text: dark enough to read */
  --amber-hi: #f2a12a; /* amber as light: dots, tints, the middle of the danger scale */
  --ember: #ff9a2e;
  --mint: #0a8460;
  --mint-hi: #2bb88a;
  --danger: #d4344f;
  /* your voice: your bubbles, the recommended reply, the button that copies what you send
     (white text stays at 4.5:1 or more along the whole gradient) */
  --voice: linear-gradient(120deg, #d6336a 0%, #bb3f97 55%, #7453de 100%);
  --laya-bg: color-mix(in oklab, var(--violet) 6%, var(--card));
  --laya-line: color-mix(in oklab, var(--violet) 22%, var(--line));
  --shadow-sm: 0 1px 2px rgb(52 28 80 / 0.06);
  --shadow: 0 1px 2px rgb(52 28 80 / 0.05), 0 14px 34px -12px rgb(52 28 80 / 0.18);
  --shadow-lg: 0 30px 70px -20px rgb(52 28 80 / 0.38);
  --sky: 0.26;
  --font-ui: "Segoe UI Variable Text", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", system-ui, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  --font-serif: "Sitka Display", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --font-mono: "Cascadia Mono", Consolas, ui-monospace, "SF Mono", monospace;
  --r-xl: 24px;
  --r-lg: 18px;
  --r: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #120d19;
    --surface: rgb(29 22 41 / 0.86);
    --card: #1c1526;
    --sunk: #251c32;
    --line: #32283f;
    --line-2: #45395b;
    --ink: #f3edf8;
    --ink-2: #bdb1cd;
    --ink-3: #8b809e;
    --rose: #ff5c8f;
    --violet: #a898ff;
    --on-violet: #160f22;
    --amber: #ffb547;
    --amber-hi: #ffb547;
    --ember: #ffa94d;
    --mint: #5fdfb5;
    --mint-hi: #5fdfb5;
    --danger: #ff6b7f;
    --voice: linear-gradient(120deg, #cf3a6e 0%, #b048a7 55%, #6d54e4 100%);
    --laya-bg: color-mix(in oklab, var(--violet) 9%, var(--card));
    --laya-line: color-mix(in oklab, var(--violet) 26%, var(--line));
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.3);
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 18px 40px -14px rgb(0 0 0 / 0.6);
    --shadow-lg: 0 30px 80px -20px rgb(0 0 0 / 0.75);
    --sky: 0.42;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.55 var(--font-ui);
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
a { color: var(--violet); }
:focus-visible { outline: 2px solid var(--violet); outline-offset: 2px; border-radius: 8px; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.dim { color: var(--ink-3); }
.mono { font-family: var(--font-mono); font-size: 12px; font-variant-numeric: tabular-nums; }
.fine { color: var(--ink-3); font-size: 12px; margin: 0; }
.fine.is-warn { color: var(--amber); }
.ico { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }
kbd {
  font-family: var(--font-mono); font-size: 11px; line-height: 1;
  padding: 2px 6px 3px; border: 1px solid var(--line-2); border-bottom-width: 2px; border-radius: 6px;
  background: var(--card); color: var(--ink-2);
}
.fatal { padding: 40px; font-size: 15px; }

/* ---------- shell: a top bar, then the chat and the replies side by side, filling the window ---------- */
.app {
  position: relative;
  isolation: isolate;
  height: 100vh;
  height: 100dvh;
  max-width: 1380px;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
}
/* The evening sky behind the top of the page. */
.app::before {
  content: "";
  position: fixed;
  z-index: -1;
  inset: -20vh -12vw auto -12vw;
  height: 66vh;
  background:
    radial-gradient(34% 50% at 16% 40%, var(--rose), transparent 72%),
    radial-gradient(32% 48% at 50% 22%, var(--violet), transparent 72%),
    radial-gradient(30% 46% at 86% 44%, var(--ember), transparent 72%),
    radial-gradient(24% 38% at 32% 76%, #19b3a3, transparent 72%);
  opacity: var(--sky);
  filter: blur(64px);
  /* A slow drift in 2 steps a second, not 60 frames: the blur is redrawn only when it moves, and
     the models share this CPU (smooth drift cost a headless Edge ~30% of a core at idle). */
  animation: sky 34s steps(68) infinite alternate;
  pointer-events: none;
}
.app.has-sheet::before { animation-play-state: paused; }
@keyframes sky {
  from { transform: translate3d(-3%, 0, 0) scale(1); }
  to { transform: translate3d(4%, 3vh, 0) scale(1.08); }
}

.hdr { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; min-width: 0; padding: 14px 28px 12px; }
.brand { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
/* An ember: it flickers while Laya and Gemma are working. */
.brand-mark {
  width: 16px; height: 16px; border-radius: 50%; flex: none;
  background: radial-gradient(circle at 50% 56%, #fff 0 15%, #ffd58f 30%, var(--ember) 48%, var(--rose) 72%, transparent 74%);
  box-shadow: 0 0 12px 3px color-mix(in oklab, var(--ember) 45%, transparent);
}
.app.is-busy .brand-mark { animation: flicker 1.3s infinite; }
@keyframes flicker {
  0%, 100% { opacity: 1; filter: brightness(1); }
  25% { opacity: 0.8; filter: brightness(1.3); }
  55% { opacity: 1; filter: brightness(0.95); }
  80% { opacity: 0.88; filter: brightness(1.22); }
}
.brand-name { font: 650 20px/1 var(--font-display); letter-spacing: -0.02em; }
.brand-name em { font: italic 500 23px/1 var(--font-serif); letter-spacing: -0.005em; color: var(--rose); margin-left: 3px; }
.tag { font-size: 11.5px; color: var(--ink-3); border: 1px solid var(--line); border-radius: 999px; padding: 1px 9px; white-space: nowrap; }
.tag.is-demo { color: var(--amber); border-color: color-mix(in oklab, var(--amber-hi) 45%, transparent); background: color-mix(in oklab, var(--amber-hi) 8%, transparent); }

/* Where the text goes, and whether the two models are up: one capsule. */
.status {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 5px 13px 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  font-size: 12.5px; color: var(--ink-2);
  white-space: nowrap;
}
.privacy { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-variant-numeric: tabular-nums; }
.privacy .ico { width: 15px; height: 15px; }
.privacy.is-local { color: var(--mint); }
.privacy.is-remote { color: var(--amber); }
.status .sep { width: 1px; height: 14px; background: var(--line-2); }
.engines { display: inline-flex; gap: 10px; }
.eng { display: inline-flex; align-items: center; gap: 6px; }
.eng i { width: 7px; height: 7px; border-radius: 50%; background: var(--line-2); flex: none; }
.eng.is-ready i { background: var(--mint); box-shadow: 0 0 0 3px color-mix(in oklab, var(--mint) 18%, transparent); }
.eng.is-loading i { background: var(--amber-hi); animation: pulse 1.2s infinite; box-shadow: 0 0 0 0 color-mix(in oklab, var(--amber-hi) 60%, transparent); }
.eng.is-error i, .eng.is-missing i { background: var(--danger); }
.icon-btn {
  display: grid; place-items: center;
  width: 34px; height: 34px; border-radius: 11px;
  border: 0; background: transparent; color: var(--ink-2);
}
.icon-btn:hover { background: var(--sunk); color: var(--ink); }

.hdr { grid-row: 1; }
.banners { grid-row: 2; display: grid; gap: 8px; padding: 0 24px 12px; }
.banners:empty { padding: 0; }
.banner {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px;
  padding: 9px 14px; border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface); color: var(--ink-2); font-size: 13px;
}
.banner.is-warn { background: color-mix(in oklab, var(--amber-hi) 11%, var(--card)); border-color: color-mix(in oklab, var(--amber-hi) 35%, var(--line)); color: var(--ink); }

/* First start: the models to download, one row each, with a thin progress line. */
.setup {
  display: grid; gap: 10px; max-width: 760px;
  padding: 16px 18px; border-radius: var(--r-lg);
  border: 1px solid var(--laya-line);
  background: var(--card); box-shadow: var(--shadow);
}
.setup h3 { margin: 0; font: 650 16px/1.35 var(--font-display); }
.setup p { margin: 0; overflow-wrap: anywhere; }
.setup-list { list-style: none; margin: 2px 0; padding: 0; display: grid; gap: 11px; }
.setup-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 3px 12px; align-items: baseline; }
.setup-name { font-weight: 600; }
.setup-row .dim { font-size: 12px; font-variant-numeric: tabular-nums; }
.setup-state { grid-column: 1 / -1; color: var(--ink-2); font-size: 12.5px; font-variant-numeric: tabular-nums; }
.setup-row.is-ready .setup-state { color: var(--mint); }
.setup-row.is-error .setup-state { color: var(--danger); }
.setup-row.is-unsupported .setup-state { color: var(--ink-3); }
.setup-meter { grid-column: 1 / -1; height: 5px; border-radius: 5px; background: var(--sunk); overflow: hidden; }
.setup-meter i { display: block; height: 100%; width: calc(var(--p) * 100%); border-radius: 5px; background: var(--voice); transition: width 0.6s ease-out; }

.main {
  grid-row: 3;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 400px);
  gap: 18px;
  padding: 2px 24px 22px;
}
.convo, .replies {
  min-width: 0;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: var(--surface); /* no backdrop blur: the sky behind is soft already, and blur under it costs CPU */
  box-shadow: var(--shadow);
}

/* ---------- buttons ---------- */
.ghost {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink-2);
  border-radius: 10px;
  padding: 5px 11px;
  font-size: 12.5px;
  white-space: nowrap;
  transition: border-color 0.15s, color 0.15s;
}
.ghost .ico { width: 15px; height: 15px; }
.ghost:hover:not(:disabled) { color: var(--ink); border-color: var(--line-2); }
.ghost:disabled { opacity: 0.45; }
.ghost.is-danger { color: var(--danger); }
.ghost.is-danger:hover:not(:disabled) { color: var(--danger); border-color: var(--danger); }
.link { border: 0; background: none; padding: 0; color: var(--violet); font-size: inherit; text-decoration: underline; text-underline-offset: 3px; }
.primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 18px;
  border: 0; border-radius: 12px;
  color: #fff;
  font-weight: 650;
  font-size: 14px;
  background: var(--voice);
  box-shadow: 0 10px 24px -12px color-mix(in oklab, var(--rose) 80%, transparent);
  transition: transform 0.12s, filter 0.2s;
}
.primary:hover:not(:disabled) { filter: brightness(1.06); transform: translateY(-1px); }
.primary:active:not(:disabled) { transform: none; }
.primary:disabled { background: var(--sunk); color: var(--ink-3); box-shadow: none; }

/* ---------- the chat window ---------- */
.convo { display: flex; flex-direction: column; overflow: hidden; container-type: inline-size; }
.chat-head { display: flex; align-items: center; gap: 8px; min-width: 0; padding: 11px 14px 10px; border-bottom: 1px solid var(--line); }
.chat-head .grow { flex: 1; }
.avatar {
  display: grid; place-items: center; flex: none;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--voice); color: #fff;
  font: 700 13px/1 var(--font-display); letter-spacing: 0.02em;
  box-shadow: 0 6px 14px -6px color-mix(in oklab, var(--rose) 70%, transparent);
}
.avatar.is-example { background: var(--laya-bg); color: var(--violet); box-shadow: inset 0 0 0 1px var(--laya-line); }
.avatar .ico { width: 16px; height: 16px; }
.person-sel, .stage {
  appearance: none; -webkit-appearance: none;
  field-sizing: content; /* as wide as the chosen name, not the longest one in the list */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5 6 7.5 9 4.5' fill='none' stroke='%238b809e' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  cursor: pointer;
}
.person-sel {
  min-width: 0; max-width: 240px;
  border: 0; border-radius: 10px;
  background-color: transparent; background-position: right 7px center; background-size: 12px;
  padding: 5px 27px 5px 7px;
  font: 650 16px/1.3 var(--font-display); color: var(--ink);
  text-overflow: ellipsis;
}
.person-sel:hover { background-color: var(--sunk); }
.stage {
  border: 1px solid var(--line); border-radius: 999px;
  background-color: var(--card); background-position: right 7px center; background-size: 10px;
  padding: 3px 23px 3px 11px;
  font-size: 12.5px; color: var(--ink-2);
}
.stage:hover { border-color: var(--line-2); color: var(--ink); }
.person-sel option, .stage option { color: var(--ink); background: var(--card); font: 14px var(--font-ui); }

.thread {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex; flex-direction: column; gap: 8px;
  padding: 20px 22px 16px;
  scrollbar-width: thin; scrollbar-color: var(--line-2) transparent;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14px, #000 calc(100% - 10px), transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 14px, #000 calc(100% - 10px), transparent);
}
.bubble { position: relative; max-width: min(76%, 560px); padding: 9px 14px 10px; border-radius: 18px; outline: none; }
.bubble p { margin: 0; white-space: pre-wrap; word-break: break-word; font-size: 15px; line-height: 1.6; }
.bubble.is-partner { align-self: flex-start; background: var(--card); border: 1px solid var(--line); border-top-left-radius: 6px; box-shadow: var(--shadow-sm); }
.bubble.is-me {
  align-self: flex-end;
  background: var(--voice); color: #fff;
  border-top-right-radius: 6px;
  box-shadow: 0 8px 18px -12px color-mix(in oklab, var(--rose) 70%, transparent);
}
.bubble.is-me ::selection { background: rgb(255 255 255 / 0.35); }
.bubble.is-partner + .bubble.is-partner, .bubble.is-me + .bubble.is-me { margin-top: -3px; }
/* Switch who said it, or take it out: a small bar on the bubble's corner, on hover or focus. */
.bubble-tools {
  position: absolute; top: -13px;
  display: flex; gap: 2px; padding: 2px;
  border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); box-shadow: var(--shadow);
  opacity: 0; transform: translateY(3px);
  transition: opacity 0.15s, transform 0.15s;
}
.bubble.is-partner .bubble-tools { right: -10px; }
.bubble.is-me .bubble-tools { left: -10px; }
.bubble:hover .bubble-tools, .bubble:focus-within .bubble-tools { opacity: 1; transform: none; }
@media (hover: none) { .bubble:not(:focus-within) .bubble-tools { pointer-events: none; } }
.tool { display: grid; place-items: center; width: 24px; height: 24px; border: 0; border-radius: 50%; background: transparent; color: var(--ink-2); }
.tool .ico { width: 14px; height: 14px; }
.tool:hover { background: var(--sunk); color: var(--ink); }
.tool.del:hover { color: var(--danger); }

/* ---------- Laya's read: hangs off the partner's message on a thin thread ---------- */
.lcard {
  position: relative;
  align-self: flex-start;
  max-width: min(76%, 440px);
  min-width: 220px;
  margin: -1px 0 6px 24px;
  padding: 10px 13px 11px;
  border-radius: 14px;
  border: 1px solid var(--laya-line);
  background: var(--laya-bg);
  color: var(--ink-2);
  font-size: 12.5px;
  line-height: 1.5;
  text-align: left;
  animation: rise 0.26s ease-out;
}
.lcard::before {
  content: "";
  position: absolute;
  left: -14px; top: -8px;
  width: 13px; height: 23px;
  border: solid var(--laya-line);
  border-width: 0 0 1.5px 1.5px;
  border-bottom-left-radius: 10px;
}
.lcard.is-settled { animation: none; }
.lcard.is-latest { border-color: color-mix(in oklab, var(--violet) 42%, var(--line)); box-shadow: 0 12px 28px -16px color-mix(in oklab, var(--violet) 70%, transparent); }
.lcard.is-error { color: var(--ink-3); }
.lcard p { margin: 0; }
/* An older read, folded into one line; click to open it again. */
.lcard.is-folded {
  display: inline-flex; align-items: center; gap: 7px;
  min-width: 0;
  padding: 3px 9px 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.lcard.is-folded::before { top: -8px; height: 20px; }
.lcard.is-folded:hover { color: var(--ink); border-color: color-mix(in oklab, var(--violet) 45%, var(--line)); }
.lcard.is-folded .ico { width: 13px; height: 13px; opacity: 0.7; }
.lsum { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lcard-head { display: flex; align-items: center; gap: 7px; margin-bottom: 7px !important; }
.lmark { width: 7px; height: 7px; border-radius: 50%; flex: none; background: var(--violet); box-shadow: 0 0 0 3px color-mix(in oklab, var(--violet) 20%, transparent); }
.lmark.is-busy { animation: pulse-violet 1.2s infinite; }
@keyframes pulse-violet { 50% { box-shadow: 0 0 0 5px color-mix(in oklab, var(--violet) 6%, transparent); } }
.lname { font: 650 11px/1 var(--font-display); letter-spacing: 0.14em; text-transform: uppercase; color: var(--violet); }
.lstate { color: var(--ink-3); font-size: 11.5px; }
.lfold { margin-left: auto; display: grid; place-items: center; width: 22px; height: 22px; border: 0; border-radius: 7px; background: transparent; color: var(--ink-3); }
.lfold .ico { width: 13px; height: 13px; transform: rotate(180deg); }
.lfold:hover { background: color-mix(in oklab, var(--violet) 12%, transparent); color: var(--violet); }
.litem + .litem { margin-top: 9px; padding-top: 9px; border-top: 1px solid color-mix(in oklab, var(--violet) 13%, transparent); }
.lq { color: var(--ink-2); display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 8px; }
.ltop { margin-top: 2px !important; display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 8px; color: var(--ink); }
.ltop b { font-size: 14px; font-weight: 650; }
.lp { font-variant-numeric: tabular-nums; color: var(--ink-3); }
.ltop .lp { color: var(--violet); font-weight: 650; }
.lbar { display: block; height: 3px; margin: 5px 0 4px; border-radius: 3px; background: color-mix(in oklab, var(--violet) 15%, transparent); overflow: hidden; }
.lbar i { display: block; height: 100%; width: calc(var(--p) * 100%); border-radius: 3px; background: var(--violet); transition: width 0.5s cubic-bezier(.2, .8, .2, 1); }
.lrest { color: var(--ink-3); font-size: 11.5px; display: flex; flex-wrap: wrap; gap: 0 12px; }
.unsure { font-size: 11px; font-weight: 600; color: var(--amber); padding: 0 7px; border-radius: 999px; background: color-mix(in oklab, var(--amber-hi) 14%, transparent); }
/* The danger level: a scale from calm to over, lit up to where this chat is. */
.litem.is-danger .lq { justify-content: space-between; }
.lnum { color: var(--ink-3); font-variant-numeric: tabular-nums; white-space: nowrap; }
.lnum b { font-size: 15px; color: var(--ink); }
.litem.is-danger[data-band="mid"] .lnum b { color: var(--amber); }
.litem.is-danger[data-band="high"] .lnum b { color: var(--rose); }
.lgauge { position: relative; display: block; height: 6px; margin: 6px 0 5px; border-radius: 6px; background: linear-gradient(90deg, var(--mint-hi), var(--amber-hi) 55%, var(--rose)); }
.lgauge::after { content: ""; position: absolute; inset: 0 0 0 calc(var(--p) * 100%); border-radius: 0 6px 6px 0; background: color-mix(in oklab, var(--laya-bg) 74%, transparent); }
.lgauge i {
  position: absolute; z-index: 1; top: 50%; left: calc(var(--p) * 100%);
  width: 12px; height: 12px; border-radius: 50%;
  translate: -50% -50%;
  background: var(--card); border: 2px solid var(--ink);
  box-shadow: 0 1px 4px rgb(0 0 0 / 0.25);
  transition: left 0.5s cubic-bezier(.2, .8, .2, 1);
}
.lscene { color: var(--ink-2); font-size: 12px; }
.lsuggest { margin-top: 9px !important; padding: 7px 10px; border-radius: 10px; background: color-mix(in oklab, var(--violet) 10%, transparent); color: var(--ink); }
.lsuggest b { color: var(--violet); font-weight: 650; }
.lcard.is-pending { display: grid; gap: 6px; }
.lcard.is-pending:has(.litem) { display: block; }
.litem.is-waiting .shimmer { margin-top: 6px; width: 45%; }

/* ---------- empty chat: what to do, and examples to try ---------- */
.thread.is-empty { justify-content: center; }
.hello { margin: auto; max-width: 680px; padding: 12px 6px; display: grid; justify-items: center; gap: 14px; text-align: center; }
.hello-mark {
  width: 46px; height: 46px; border-radius: 50%;
  background: radial-gradient(circle at 50% 56%, #fff 0 14%, #ffd58f 28%, var(--ember) 46%, var(--rose) 70%, transparent 72%);
  box-shadow: 0 0 36px 12px color-mix(in oklab, var(--ember) 30%, transparent);
  animation: breathe 4.5s ease-in-out infinite;
}
@keyframes breathe { 50% { transform: scale(1.07); } } /* transform only: no repaint per frame */
.hello-title { margin: 0; font: 650 22px/1.3 var(--font-display); letter-spacing: -0.01em; }
.hello-steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.hello-steps li {
  counter-increment: step;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 13px 5px 5px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card); box-shadow: var(--shadow-sm);
  color: var(--ink-2); font-size: 13px;
}
.hello-steps li::before {
  content: counter(step);
  display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%;
  background: color-mix(in oklab, var(--rose) 12%, var(--card)); color: var(--rose);
  font: 650 12px/1 var(--font-display);
}
.examples { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 6px; margin-top: 6px; }
.examples > span { color: var(--ink-3); font-size: 12px; margin-right: 2px; }
.chip { border: 1px solid var(--line); background: transparent; border-radius: 999px; padding: 4px 12px; font-size: 12.5px; color: var(--ink-2); transition: border-color 0.15s, color 0.15s, background 0.15s; }
.chip:hover { border-color: color-mix(in oklab, var(--violet) 50%, var(--line)); color: var(--violet); background: var(--laya-bg); }
.start-hint { max-width: 520px; margin: 18vh auto 0; padding: 0 20px; display: grid; gap: 8px; }
.start-hint .empty-title { margin: 0; font: 650 20px/1.3 var(--font-display); }
.start-hint p { margin: 0; }
.start-hint code { font-family: var(--font-mono); background: var(--sunk); border-radius: 6px; padding: 1px 6px; }
/* the one in index.html: only if the script has not replaced it after 1.5 s (no flash on a normal load) */
.start-hint.is-static { animation: show-late 0s 1.5s both; }
@keyframes show-late { from { visibility: hidden; } to { visibility: visible; } }

/* ---------- the two boxes: what they said on the left, what I said on the right ---------- */
.composers {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
  padding: 12px 14px 14px;
  border-top: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 45%, transparent);
}
/* stacked when the chat column itself is narrow (phones, and narrow two-column windows) */
@container (max-width: 560px) { .composers { grid-template-columns: 1fr; } }
.composer {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 8px; align-items: end;
  padding: 8px 8px 8px 12px;
  border: 1px solid var(--line); border-radius: 16px; background: var(--card);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.composer.is-partner { border-top-left-radius: 6px; }
.composer.is-me { border-top-right-radius: 6px; }
.composer:focus-within { border-color: color-mix(in oklab, var(--violet) 45%, var(--line)); box-shadow: 0 0 0 4px color-mix(in oklab, var(--violet) 12%, transparent); }
.composer.is-me:focus-within { border-color: color-mix(in oklab, var(--rose) 45%, var(--line)); box-shadow: 0 0 0 4px color-mix(in oklab, var(--rose) 12%, transparent); }
.composer.is-flash { animation: flash 0.8s ease-out; }
@keyframes flash { from { box-shadow: 0 0 0 6px color-mix(in oklab, var(--rose) 40%, transparent); } }
.composer-top { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 8px; min-width: 0; }
.speaker { border-radius: 7px; padding: 1px 8px; font-size: 12px; font-weight: 650; white-space: nowrap; }
.speaker.is-partner { background: var(--sunk); color: var(--ink-2); }
.speaker.is-me { background: color-mix(in oklab, var(--rose) 13%, transparent); color: var(--rose); }
.paste-hint { display: inline-flex; align-items: center; gap: 6px; min-width: 0; overflow: hidden; color: var(--ink-3); font-size: 11.5px; white-space: nowrap; }
.composer textarea {
  grid-column: 1; resize: none; border: 0; outline: 0; background: transparent;
  padding: 2px 0; min-height: 46px; max-height: 140px;
  font-size: 14.5px; line-height: 1.55;
}
.composer textarea::placeholder { color: var(--ink-3); }
/* The button lights up once there is something in its box. */
.composer .add {
  grid-column: 2;
  border: 1px solid var(--line); border-radius: 11px;
  background: var(--sunk); color: var(--ink-2);
  padding: 7px 13px; font-size: 13px; font-weight: 650; white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.2s, transform 0.12s;
}
.composer .add:hover { color: var(--ink); border-color: var(--line-2); }
.composer .add:active { transform: translateY(1px); }
.composer.is-partner.has-text .add { background: var(--violet); color: var(--on-violet); border-color: transparent; box-shadow: 0 8px 18px -8px color-mix(in oklab, var(--violet) 85%, transparent); }
.composer.is-me.has-text .add { background: var(--voice); color: #fff; border-color: transparent; box-shadow: 0 8px 18px -8px color-mix(in oklab, var(--rose) 85%, transparent); }
.composer.has-text .add:hover { filter: brightness(1.07); }

/* ---------- replies ---------- */
.replies {
  align-self: start;
  max-height: 100%;
  overflow-y: auto;
  display: grid; gap: 12px; align-content: start;
  padding: 15px 16px 14px;
  scrollbar-width: thin; scrollbar-color: var(--line-2) transparent;
}
.replies-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 30px; }
.replies-head h2 { margin: 0; display: flex; align-items: center; gap: 8px; font: 650 15px/1.3 var(--font-display); }
.replies-head h2 .ico { width: 16px; height: 16px; color: var(--rose); fill: color-mix(in oklab, var(--rose) 20%, transparent); }
.replies-empty { display: grid; gap: 10px; }
.replies-empty p { margin: 0; color: var(--ink-3); font-size: 13px; }
.ghost-reply { height: 66px; border-radius: 16px; border: 1.5px dashed var(--line-2); opacity: 0.7; }
.ghost-reply.is-short { width: 80%; height: 50px; }
.run-status { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0; color: var(--ink-2); font-size: 12.5px; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber-hi); animation: pulse 1.2s infinite; box-shadow: 0 0 0 0 color-mix(in oklab, var(--amber-hi) 60%, transparent); flex: none; }
@keyframes pulse { 70% { box-shadow: 0 0 0 7px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
.reply-list { display: grid; gap: 10px; }
.reply {
  position: relative;
  padding: 13px 15px 11px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  animation: rise 0.28s ease-out;
}
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.reply.is-best {
  border: 1.5px solid transparent;
  background: linear-gradient(var(--card), var(--card)) padding-box, var(--voice) border-box;
  box-shadow: 0 16px 34px -18px color-mix(in oklab, var(--rose) 70%, transparent);
}
.reply.is-template { border-color: color-mix(in oklab, var(--mint) 55%, transparent); }
.reply.is-live { border-style: dashed; animation: none; }
.reply.is-settled { animation: none; }
.reply.is-placeholder { display: grid; gap: 8px; animation: none; }
.reply.is-placeholder p { margin: 0; font-size: 12.5px; }
.reply-badge {
  display: inline-flex; align-items: center; gap: 5px;
  margin: 0 0 5px;
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.04em;
  background: var(--voice); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.reply-badge .ico { width: 13px; height: 13px; stroke: var(--rose); fill: color-mix(in oklab, var(--rose) 22%, transparent); }
.reply-badge.is-safe { background: none; color: var(--mint); }
.reply-badge.is-safe .ico { stroke: var(--mint); fill: none; }
.reply-text { margin: 0; font-size: 16px; line-height: 1.65; white-space: pre-wrap; word-break: break-word; }
.caret { display: inline-block; width: 7px; height: 1em; margin-left: 2px; vertical-align: -2px; border-radius: 2px; background: var(--rose); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.reply-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; margin-top: 10px; }
.flag { font-size: 12px; color: var(--amber); padding: 1px 9px; border-radius: 999px; background: color-mix(in oklab, var(--amber-hi) 12%, transparent); }
.flag::before { content: "⚠ "; }
.use {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 5px;
  border: 1px solid var(--line); background: var(--sunk); color: var(--ink);
  border-radius: 999px; padding: 4px 14px 4px 11px; font-size: 12.5px; font-weight: 650;
  transition: border-color 0.15s, color 0.15s, filter 0.15s;
}
.use .ico { width: 14px; height: 14px; }
.use:hover { border-color: var(--rose); color: var(--rose); }
.reply.is-best .use { background: var(--voice); color: #fff; border-color: transparent; box-shadow: 0 8px 18px -10px color-mix(in oklab, var(--rose) 85%, transparent); }
.reply.is-best .use:hover { color: #fff; filter: brightness(1.07); }
.reply .use.is-done, .reply .use.is-done:hover { background: color-mix(in oklab, var(--mint) 12%, var(--card)); color: var(--mint); border-color: color-mix(in oklab, var(--mint) 45%, transparent); box-shadow: none; filter: none; }
.shimmer { height: 12px; border-radius: 6px; background: linear-gradient(90deg, var(--sunk), var(--line), var(--sunk)); background-size: 200% 100%; animation: shimmer 1.4s linear infinite; }
.shimmer.is-short { width: 60%; }
@keyframes shimmer { to { background-position: -200% 0; } }
/* the one line of small print at the bottom of the replies: not tuned yet, and how long it took */
.replies-foot {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 12px;
  padding-top: 10px; border-top: 1px solid var(--line);
  color: var(--ink-3); font-size: 11.5px;
}
.times { display: flex; flex-wrap: wrap; gap: 2px 12px; margin: 0; font-variant-numeric: tabular-nums; }
.time b { color: var(--ink-2); font-weight: 600; }

/* ---------- notices ---------- */
.notice { display: flex; gap: 9px; align-items: flex-start; margin: 0; padding: 10px 12px; border-radius: 12px; font-size: 13px; }
.notice p { margin: 0; }
.notice .ghost { margin-top: 8px; }
.notice.is-soft { color: var(--ink-2); background: var(--sunk); }
.notice.is-calm { color: var(--ink); background: color-mix(in oklab, var(--violet) 11%, var(--card)); }
.notice.is-warn { background: color-mix(in oklab, var(--amber-hi) 12%, var(--card)); }
.notice.is-safety { background: color-mix(in oklab, var(--danger) 10%, var(--card)); border: 1px solid color-mix(in oklab, var(--danger) 40%, transparent); }
.notice.is-safety .ico { color: var(--danger); }

/* ---------- memory: what this reply used, and what was kept from the chat ---------- */
.memory-used, .memory-saved { display: grid; gap: 6px; padding: 10px 12px; border-radius: 14px; }
.memory-used { background: var(--sunk); }
.memory-saved { border: 1px solid color-mix(in oklab, var(--rose) 26%, var(--line)); background: color-mix(in oklab, var(--rose) 5%, var(--card)); }
.memory-title { margin: 0; font-size: 11.5px; font-weight: 600; color: var(--ink-3); }
.memory-item { margin: 0; font-size: 12.5px; display: flex; flex-wrap: wrap; gap: 6px; align-items: baseline; overflow-wrap: anywhere; }
.memory-where { color: var(--ink-3); }
.memory-saved .memory-where { color: var(--rose); font-weight: 600; }
.memory-saved .link, .auto-item .link { font-size: 12px; }
.memory-note { margin: 0; }
.layer { display: inline-block; font-size: 11px; line-height: 1.6; border: 1px solid var(--line); border-radius: 999px; padding: 0 7px; color: var(--ink-2); white-space: nowrap; }
.layer.is-l0 { color: var(--violet); border-color: color-mix(in oklab, var(--violet) 45%, transparent); }
.layer.is-l1 { color: var(--amber); border-color: color-mix(in oklab, var(--amber-hi) 45%, transparent); }
.layer.is-l2 { color: var(--mint); border-color: color-mix(in oklab, var(--mint) 45%, transparent); }
.layer.is-l3 { color: var(--ink-3); }
.layer.is-auto { color: var(--rose); border-color: color-mix(in oklab, var(--rose) 45%, transparent); }

/* ---------- sheets: settings and profile drawers, consent ---------- */
.sheet {
  position: fixed; z-index: 10;
  inset: 10px 10px 10px auto;
  width: min(520px, calc(100vw - 20px));
  overflow-y: auto;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow-lg);
  animation: slide 0.24s cubic-bezier(.2, .8, .2, 1);
  scrollbar-width: thin; scrollbar-color: var(--line-2) transparent;
}
.app.has-sheet::after { content: ""; position: fixed; inset: 0; z-index: 9; background: rgb(18 10 28 / 0.34); animation: fade 0.2s ease-out; }
@keyframes slide { from { transform: translateX(18px); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes fade { from { opacity: 0; } }
.sheet-inner { padding: 0 18px 28px; }
.sheet-head {
  position: sticky; top: 0; z-index: 1;
  display: flex; align-items: center; gap: 8px;
  margin: 0 -18px 10px; padding: 12px 18px 10px;
  background: color-mix(in oklab, var(--bg) 90%, transparent);
  backdrop-filter: blur(10px);
}
.sheet-head h2 { margin: 0; font: 650 18px/1.3 var(--font-display); overflow-wrap: anywhere; }
.saved-flash { margin-left: auto; font-size: 12px; color: var(--mint); opacity: 0; transition: opacity 0.2s; }
.saved-flash.is-on { opacity: 1; }
.group { display: grid; gap: 9px; margin-bottom: 10px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--card); }
.group h3 { margin: 0; font: 650 14px/1.35 var(--font-display); }
.sub { display: grid; gap: 8px; padding: 2px 0 6px 22px; border-left: 2px solid var(--line); margin-left: 7px; }
.field { display: grid; gap: 4px; }
.field-label { font-size: 12px; color: var(--ink-3); }
.field input[type="text"], .group textarea, .field select {
  width: 100%;
  border: 1px solid var(--line); border-radius: 10px; background: var(--bg);
  padding: 7px 10px; font-size: 13px;
}
.field input[type="text"]:focus, .group textarea:focus { outline: none; border-color: color-mix(in oklab, var(--violet) 50%, var(--line)); box-shadow: 0 0 0 3px color-mix(in oklab, var(--violet) 12%, transparent); }
.group textarea { resize: vertical; }
.group textarea.book { min-height: 300px; font-size: 13.5px; line-height: 1.7; }
.inline { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.eng-line { margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; font-size: 13px; }
.eng-line .eng { font-weight: 600; }
.radio, .toggle, .check { display: flex; align-items: center; gap: 9px; cursor: pointer; }
.radio input, .check input { accent-color: var(--rose); width: 16px; height: 16px; flex: none; }
.toggle input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.toggle-ui { width: 32px; height: 19px; border-radius: 999px; background: var(--line-2); position: relative; flex: none; transition: background 0.2s; }
.toggle-ui::after { content: ""; position: absolute; top: 2px; left: 2px; width: 15px; height: 15px; border-radius: 50%; background: #fff; box-shadow: 0 1px 2px rgb(0 0 0 / 0.2); transition: transform 0.2s; }
.toggle input:checked + .toggle-ui { background: var(--rose); }
.toggle input:checked + .toggle-ui::after { transform: translateX(13px); }
.toggle input:focus-visible + .toggle-ui { outline: 2px solid var(--violet); outline-offset: 2px; }
.about p { margin: 0; font-size: 13px; color: var(--ink-2); }
.memory .layer-block { border-top: 1px solid var(--line); padding-top: 8px; }
.memory summary { cursor: pointer; font-size: 12.5px; color: var(--ink-2); }
.chunks { margin: 6px 0 0; padding-left: 20px; display: grid; gap: 6px; font-size: 12.5px; color: var(--ink-2); }
.chunk { white-space: pre-wrap; overflow-wrap: anywhere; }
.chunk b { color: var(--ink); font-weight: 600; }
pre.core { white-space: pre-wrap; overflow-wrap: anywhere; margin: 6px 0 0; font: inherit; font-size: 12.5px; color: var(--ink-2); }
.trash-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.trash-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.trash-list li .ghost { margin-left: auto; }

/* First run: the page waits behind a frosted pane, the sky still glowing through. */
.app.has-sheet:has(.consent)::after { background: transparent; backdrop-filter: none; }
.sheet:has(.consent) {
  inset: 0; width: auto;
  display: grid; place-items: center;
  border: 0; border-radius: 0; box-shadow: none;
  background: color-mix(in oklab, var(--bg) 45%, transparent);
  backdrop-filter: blur(26px) saturate(1.2);
  animation: fade 0.3s ease-out;
}
.sheet-inner.consent {
  width: min(480px, calc(100vw - 32px));
  margin: 5vh auto;
  padding: 30px 28px 22px;
  display: grid; gap: 16px;
  border: 1px solid var(--line); border-radius: 26px;
  background: var(--card);
  box-shadow: var(--shadow-lg), 0 0 120px -30px color-mix(in oklab, var(--rose) 55%, transparent);
}
.consent h2 { margin: 0; font: 650 24px/1.25 var(--font-display); letter-spacing: -0.01em; }
.consent .primary { width: 100%; padding: 12px 16px; font-size: 15px; }
.consent-mark {
  width: 38px; height: 38px; border-radius: 50%;
  background: radial-gradient(circle at 50% 56%, #fff 0 15%, #ffd58f 30%, var(--ember) 46%, var(--rose) 70%, transparent 72%);
  box-shadow: 0 0 26px 9px color-mix(in oklab, var(--rose) 30%, transparent);
  animation: flicker 1.6s infinite;
}
.consent-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.consent-list li { display: grid; gap: 2px; padding-left: 13px; border-left: 2px solid color-mix(in oklab, var(--rose) 45%, var(--line)); color: var(--ink-2); font-size: 13.5px; }
.consent-list li b { color: var(--ink); font-size: 14.5px; font-weight: 650; }
.lang-switch { justify-content: center; font-size: 12.5px; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 20;
  transform: translate(-50%, 12px); opacity: 0; pointer-events: none;
  display: flex; align-items: center; gap: 12px;
  max-width: calc(100% - 32px);
  padding: 9px 18px; border-radius: 999px;
  background: var(--ink); color: var(--bg); font-size: 13px;
  box-shadow: var(--shadow-lg);
  transition: opacity 0.2s, transform 0.2s;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.toast-action { border: 0; background: none; color: var(--rose); font-weight: 650; padding: 0; }

/* ---------- narrow windows: one column, the page scrolls, replies under the chat ---------- */
@media (max-width: 880px) {
  .app { height: auto; min-height: 100vh; min-height: 100dvh; grid-template-rows: auto auto auto; }
  .hdr { padding: 12px 16px 10px; }
  .banners { padding: 0 12px 10px; }
  .main { grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 0 12px 16px; }
  .thread { flex: none; max-height: 62vh; min-height: 200px; }
  .replies { align-self: stretch; max-height: none; overflow: visible; }
  .bubble, .lcard { max-width: 86%; }
  .privacy-text { display: none; }
}
@media (max-width: 520px) {
  .chat-head { flex-wrap: wrap; }
  .person-sel { max-width: 170px; }
  .paste-hint { display: none; }
  .hello-title { font-size: 19px; }
  .sheet { inset: 0; width: 100vw; border-radius: 0; border: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}