:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #15181d;
  --muted: #5d6673;
  --border: #e2e6eb;
  --accent: #0a84c6;       /* Rwanda sky blue, slightly deepened for contrast */
  --accent-2: #20603d;     /* Rwanda green */
  --sun: #e5b800;          /* Rwanda yellow */
  --user: #e9f4fb;
  --danger: #c0392b;
  --kin: #20603d; --eng: #0a6fb0; --fra: #7b3fb5; --swh: #b5651d; --other: #6b7280;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 2px 8px rgba(16, 24, 40, .05);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216; --panel: #171b21; --text: #e8ebef; --muted: #9aa4b1; --border: #272d36;
    --accent: #3fb0ea; --accent-2: #4caf7a; --user: #13293a;
    --kin: #5ccf8f; --eng: #5cb3f0; --fra: #b48cf0; --swh: #f0a35c;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: grid; grid-template-rows: auto 1fr auto;
}
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.topbar { display: flex; align-items: center; justify-content: space-between; padding: 10px 20px;
  border-bottom: 1px solid var(--border); background: var(--panel); }
.brand { display: flex; align-items: center; gap: 10px; }
.logo { color: var(--sun); display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 14%, transparent); }
h1 { font-size: 18px; margin: 0; letter-spacing: .2px; }
.tagline { margin: 0; color: var(--muted); font-size: 12.5px; }
.status { font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.status.ok::before { background: #2ecc71; } .status.err::before { background: var(--danger); }

.thread { overflow-y: auto; padding: 24px max(16px, calc(50% - 400px)); display: flex; flex-direction: column; gap: 14px; }
.welcome { text-align: center; margin: 6vh auto 0; max-width: 620px; }
.welcome h2 { margin: 0 0 6px; font-size: 24px; }
.welcome p { color: var(--muted); margin: 0 0 18px; }
.examples { display: flex; flex-direction: column; gap: 8px; }
.example { text-align: left; background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 14px; color: var(--text); cursor: pointer; font: inherit; box-shadow: var(--shadow); }
.example:hover { border-color: var(--accent); }

.msg { max-width: 100%; border-radius: var(--radius); padding: 12px 16px; box-shadow: var(--shadow); }
.msg.user { align-self: flex-end; background: var(--user); max-width: 85%; white-space: pre-wrap; }
.msg.bot { align-self: stretch; background: var(--panel); border: 1px solid var(--border); }
.msg.error { border-color: var(--danger); color: var(--danger); }
.meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 8px; font-size: 12.5px; color: var(--muted); }
.chip { border: 1px solid var(--border); border-radius: 999px; padding: 1px 9px; font-size: 12px; white-space: nowrap; }
.chip.mixed { border-color: var(--sun); color: var(--text); background: color-mix(in srgb, var(--sun) 16%, transparent); }
.result { font-size: 17px; white-space: pre-wrap; }
.source { margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--border); font-size: 13.5px; color: var(--muted); }
.span { border-bottom: 2.5px solid var(--other); padding-bottom: 1px; }
.span.kin { border-color: var(--kin); } .span.eng { border-color: var(--eng); }
.span.fra { border-color: var(--fra); } .span.swh { border-color: var(--swh); }
.legend { display: inline-flex; gap: 8px; align-items: center; font-size: 11.5px; }
.lg { display: inline-block; width: 10px; height: 3px; border-radius: 2px; }
.lg.kin { background: var(--kin); } .lg.eng { background: var(--eng); } .lg.fra { background: var(--fra); } .lg.swh { background: var(--swh); }
.actions { display: flex; gap: 8px; margin-top: 10px; align-items: center; flex-wrap: wrap; }
.actions audio { height: 34px; max-width: 100%; }
.small-btn { font: inherit; font-size: 12.5px; border: 1px solid var(--border); background: transparent; color: var(--text);
  border-radius: 8px; padding: 4px 10px; cursor: pointer; }
.small-btn:hover { border-color: var(--accent); }
.steps { list-style: none; padding: 0; margin: 0 0 10px; font-size: 13px; color: var(--muted); display: grid; gap: 4px; }
.steps li::before { content: "› "; color: var(--accent); }
.sources { margin: 10px 0 0; padding-left: 18px; font-size: 13px; }
.sources a, .page-title a { color: var(--accent); word-break: break-all; }
.para { margin: 0 0 10px; }
.para .orig { display: none; color: var(--muted); font-size: 13px; margin-top: 2px; }
.show-orig .para .orig { display: block; }
.typing { display: inline-flex; gap: 4px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .2s; } .typing i:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }

.composer { border-top: 1px solid var(--border); background: var(--panel); padding: 10px max(16px, calc(50% - 400px)) 8px; }
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.modes { display: inline-flex; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 3px; }
.mode { font: inherit; font-size: 13px; border: 0; background: transparent; color: var(--muted); padding: 5px 11px; border-radius: 7px; cursor: pointer; }
.mode.active { background: var(--panel); color: var(--text); box-shadow: var(--shadow); font-weight: 600; }
.langs, .voice { display: inline-flex; gap: 6px; align-items: center; }
select { font: inherit; font-size: 13px; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 5px 8px; }
.toggle { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; cursor: pointer; }
.icon-btn { border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 8px;
  min-width: 34px; height: 32px; cursor: pointer; display: grid; place-items: center; font-size: 15px; }
.icon-btn:hover { border-color: var(--accent); }
.input-row { display: flex; gap: 8px; align-items: flex-end; }
textarea { flex: 1; resize: none; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 10px 12px; max-height: 180px; outline: none; overflow-y: hidden; line-height: 1.4; }
textarea:focus { border-color: var(--accent); }
.mic { height: 42px; width: 42px; border-radius: 12px; }
.mic.recording { background: var(--danger); color: #fff; border-color: var(--danger); animation: pulse 1.4s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--danger) 25%, transparent); } }
.send { height: 42px; width: 42px; border: 0; border-radius: 12px; background: var(--accent); color: #fff; cursor: pointer; display: grid; place-items: center; }
.send:disabled { opacity: .5; cursor: progress; }
.hint { margin: 6px 0 0; font-size: 11.5px; color: var(--muted); text-align: center; }

@media (max-width: 640px) {
  .controls { flex-direction: column; align-items: stretch; }
  .modes { justify-content: space-between; } .mode { flex: 1; }
  .langs select { flex: 1; } .voice { justify-content: space-between; }
  .msg.user { max-width: 95%; }
}

.context { flex-basis: 100%; font: inherit; font-size: 13px; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; display: none; }
.context.show { display: block; }
.upload { height: 42px; width: 42px; border-radius: 12px; cursor: pointer; }

/* ---------------------------------------------------------------- top bar extras */
.top-right { display: flex; align-items: center; gap: 12px; }
.contrib { font-size: 12.5px; color: var(--accent-2); border: 1px solid color-mix(in srgb, var(--accent-2) 40%, transparent);
  border-radius: 999px; padding: 2px 10px; white-space: nowrap; }
.welcome-fb { font-size: 13.5px; background: color-mix(in srgb, var(--sun) 12%, transparent); border-radius: 10px; padding: 8px 12px; }
.talk-example { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); font-weight: 600; }
[hidden] { display: none !important; }

/* ---------------------------------------------------------------- feedback */
.fb { margin-top: 10px; }
.fb-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.fb-label { font-size: 12px; color: var(--muted); margin-right: 2px; }
.fb-btn { font: inherit; font-size: 14px; min-width: 34px; height: 30px; padding: 0 8px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--border); background: transparent; color: var(--text); transition: border-color .15s, background .15s; }
.fb-btn.wide { font-size: 12.5px; padding: 0 11px; }
.fb-btn:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.fb-btn.on { background: color-mix(in srgb, var(--accent-2) 18%, transparent); border-color: var(--accent-2); }
.fb-btn:disabled { opacity: .6; cursor: default; }
.fb-panel { margin-top: 10px; border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border)); border-radius: 12px;
  padding: 12px; background: color-mix(in srgb, var(--accent) 4%, var(--panel)); display: grid; gap: 10px; }
.fb-panel.inline { margin-top: 8px; font-size: 14px; }
.fb-head { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.fb-title { font-weight: 650; }
.fb-sub { font-size: 12.5px; color: var(--muted); }
.fb-close { border: 0; background: transparent; color: var(--muted); font-size: 20px; line-height: 1; cursor: pointer; padding: 0 4px; }
.fb-text { width: 100%; font: inherit; font-size: 15px; color: var(--text); background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 10px; resize: vertical; }
.fb-text:focus, .fb-input:focus { outline: none; border-color: var(--accent); }
.fb-input { font: inherit; font-size: 13px; color: var(--text); background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px; width: 100%; }
.fb-input.small { flex: 1; min-width: 160px; width: auto; }
.pills { display: flex; flex-wrap: wrap; gap: 6px; }
.pill { font: inherit; font-size: 12.5px; border: 1px solid var(--border); background: var(--panel); color: var(--text);
  border-radius: 999px; padding: 3px 10px; cursor: pointer; }
.pill.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.fb-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.fb-send { font: inherit; font-size: 13.5px; font-weight: 600; border: 0; border-radius: 9px; padding: 7px 14px; cursor: pointer;
  background: var(--accent); color: #fff; }
.fb-send.alt { background: var(--accent-2); }
.fb-send:disabled { opacity: .6; cursor: progress; }
.fb-thanks { margin-top: 8px; font-size: 13.5px; color: var(--accent-2); font-weight: 600; }
.fb-consent { font-size: 11.5px; color: var(--muted); }
.fb-clip { display: grid; gap: 8px; padding: 10px; border-radius: 10px; background: var(--panel); border: 1px solid var(--border); }
.fb-words { font-size: 17px; line-height: 2.1; }
.word { font: inherit; border: 1px dashed transparent; background: transparent; color: var(--text); padding: 0 3px;
  border-radius: 6px; cursor: pointer; }
.word:hover { border-color: var(--accent); }
.word.timed { text-decoration: underline dotted color-mix(in srgb, var(--accent) 50%, transparent); text-underline-offset: 5px; }
.word.marked { background: color-mix(in srgb, var(--danger) 16%, transparent); border: 1px solid var(--danger); }
.fb-rows { display: grid; gap: 8px; }
.fb-row { display: grid; gap: 6px; padding: 8px 10px; border-left: 3px solid var(--danger); background: var(--bg); border-radius: 6px; }
.fb-word { font-weight: 650; }
.fb-row-tools, .fb-sentence { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.rec { display: inline-flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.rec-btn.recording { background: var(--danger); color: #fff; border-color: var(--danger); animation: pulse 1.4s infinite; }
audio.mini { height: 30px; max-width: 100%; }
.fix-heard { margin-left: 4px; padding: 1px 8px; font-size: 12px; }
.para-fix { border: 0; background: transparent; color: var(--muted); cursor: pointer; font-size: 13px; opacity: .55; }
.para-fix:hover { opacity: 1; color: var(--accent); }

/* ---------------------------------------------------------------- voice mode */
.talkbar { display: flex; gap: 16px; align-items: center; padding: 6px 2px 12px; }
.talk-btn { flex: none; width: 72px; height: 72px; border-radius: 50%; border: 0; cursor: pointer; color: #fff;
  background: var(--accent); display: grid; place-items: center; box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform .12s, background .2s; }
.talk-btn:active { transform: scale(.95); }
.talk-btn .ic-stop { display: none; }
.talk-btn[data-state="listening"] { background: var(--danger); animation: pulse 1.4s infinite; }
.talk-btn[data-state="listening"] .ic-mic { display: none; }
.talk-btn[data-state="listening"] .ic-stop { display: block; }
.talk-btn[data-state="thinking"] { background: var(--muted); animation: breathe 1.6s ease-in-out infinite; }
.talk-btn[data-state="speaking"] { background: var(--accent-2); animation: breathe 1.2s ease-in-out infinite; }
@keyframes breathe { 50% { transform: scale(1.06); } }
.talk-info { flex: 1; display: grid; gap: 6px; min-width: 0; }
.talk-state { font-weight: 600; font-size: 15px; }
.talk-level { height: 6px; border-radius: 3px; background: var(--bg); border: 1px solid var(--border); overflow: hidden; }
.talk-level i { display: block; height: 100%; width: 0; background: var(--accent-2); transition: width .08s linear; }
.talk-opts { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.msg.chat .result { font-size: 16.5px; }
.msg.note { align-self: center; background: transparent; border: 0; box-shadow: none; color: var(--muted); font-size: 12.5px; padding: 2px; }
@media (max-width: 640px) {
  .talkbar { gap: 12px; }
  .talk-btn { width: 64px; height: 64px; }
  .top-right { gap: 6px; } .contrib { font-size: 11.5px; }
}

/* ---------------------------------------------------------------- phone layout */
body { grid-template-columns: minmax(0, 1fr); }
@media (max-width: 640px) {
  .topbar { padding: 8px 14px; }
  .tagline { display: none; }
  .modes { display: flex; max-width: 100%; overflow-x: auto; justify-content: flex-start; scrollbar-width: none; }
  .modes::-webkit-scrollbar { display: none; }
  .mode { flex: none; white-space: nowrap; }
  .langs, .voice { flex-wrap: wrap; }
  .voice select { flex: 1; min-width: 0; }
  .actions audio { width: 100%; }
  .fb-label { flex-basis: 100%; }
}

/* ================================================================ v4: modern chat UI */
.link-btn { text-decoration: none; display: inline-flex; align-items: center; }
.msg.bot { border: 0; box-shadow: none; background: transparent; padding: 4px 2px 6px; }
.msg.bot .result { font-size: 16.5px; line-height: 1.6; }
.msg.user { border-radius: 18px; padding: 10px 15px; }
.msg.bot.error { color: var(--danger); }

/* answer action row: small icon buttons with tooltips */
.fb { margin-top: 6px; }
.fb-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; }
.icon-action { width: 32px; height: 32px; display: grid; place-items: center; border: 0; border-radius: 8px; cursor: pointer;
  background: transparent; color: var(--muted); position: relative; transition: background .12s, color .12s; }
.icon-action:hover { background: color-mix(in srgb, var(--text) 8%, transparent); color: var(--text); }
.icon-action.on { color: var(--accent); }
.icon-action:disabled { opacity: .5; cursor: progress; }
.icon-action.loading { animation: breathe 1s ease-in-out infinite; }
.icon-action::after { content: attr(title); position: absolute; bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--panel); font-size: 11.5px; padding: 4px 8px; border-radius: 6px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity .12s .25s; z-index: 5; }
.icon-action:hover::after { opacity: 1; }
@media (hover: none) { .icon-action::after { display: none; } }
.fb-bar .chip { margin-left: 6px; }
.para-fix { width: 24px; height: 24px; display: inline-grid; vertical-align: middle; opacity: .55; }
.ra-player:empty { display: none; }
.ra-player { margin-top: 6px; max-width: 420px; }
.ra-player .sp-words { display: none; }
.result .sp-word { cursor: default; padding: 0 1px; }
.result .sp-word.now { background: color-mix(in srgb, var(--accent) 22%, transparent); color: inherit; box-shadow: 0 2px 0 var(--accent); }
.reply-part .sp-word.now { background: color-mix(in srgb, var(--accent) 22%, transparent); box-shadow: 0 2px 0 var(--accent); border-radius: 4px; }
.result.small { font-size: 15px; }
.source { margin-top: 8px; }
audio.mini { height: 32px; }

/* composer */
.composer { border-top: 0; background: linear-gradient(to top, var(--bg) 70%, transparent); padding: 6px max(16px, calc(50% - 400px)) 10px; }
.controls { margin-bottom: 8px; }
.settings { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; padding: 10px 12px; margin-bottom: 8px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px; font-size: 13px; }
.settings label { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); }
.settings .context { flex-basis: 100%; }
#settings-btn.on { border-color: var(--accent); color: var(--accent); }
.input-pill { display: flex; align-items: flex-end; gap: 4px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 26px; padding: 6px; box-shadow: 0 2px 10px rgba(16, 24, 40, .06); }
.input-pill:focus-within { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }
.input-pill textarea { border: 0; background: transparent; padding: 9px 6px; max-height: 200px; font-size: 15.5px; }
.input-pill textarea:focus { border: 0; }
.pill-btn { flex: none; width: 38px; height: 38px; border-radius: 50%; border: 0; background: transparent; color: var(--muted);
  display: grid; place-items: center; cursor: pointer; }
.pill-btn:hover { background: color-mix(in srgb, var(--text) 7%, transparent); color: var(--text); }
.pill-btn.recording { background: var(--danger); color: #fff; animation: pulse 1.4s infinite; }
.round-btn { flex: none; width: 38px; height: 38px; border-radius: 50%; border: 0; display: grid; place-items: center; cursor: pointer;
  background: var(--text); color: var(--panel); transition: transform .1s, opacity .15s; }
.round-btn:active { transform: scale(.93); }
.round-btn.voice { background: var(--accent); color: #fff; }
.round-btn:disabled { opacity: .45; cursor: progress; }
.hint { margin-top: 6px; }

/* voice mode: full screen, orb reacting to sound */
body.voice-open { overflow: hidden; }
.voice-overlay { position: fixed; inset: 0; z-index: 40; display: grid; grid-template-rows: auto 1fr auto; padding: 18px 20px calc(24px + env(safe-area-inset-bottom));
  background: radial-gradient(circle at 50% 38%, color-mix(in srgb, var(--accent) 10%, var(--bg)) 0%, var(--bg) 60%); }
.vo-top { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--muted); }
.vo-lang { border: 1px solid var(--border); border-radius: 999px; padding: 3px 11px; background: var(--panel); }
.vo-center { display: grid; place-items: center; align-content: center; gap: 22px; text-align: center; }
.vo-orb { --level: 0; width: min(46vw, 210px); aspect-ratio: 1; border-radius: 50%; border: 0; cursor: pointer; padding: 0; position: relative;
  background: radial-gradient(circle at 35% 30%, #7fd3ff, var(--accent) 45%, #0a5d8c 100%);
  box-shadow: 0 10px 40px color-mix(in srgb, var(--accent) 40%, transparent);
  transform: scale(calc(1 + var(--level) * .22)); transition: transform .08s linear, filter .3s; }
.vo-orb span { position: absolute; inset: -14px; border-radius: 50%; border: 2px solid color-mix(in srgb, var(--accent) 35%, transparent);
  opacity: calc(.2 + var(--level)); transform: scale(calc(1 + var(--level) * .35)); transition: transform .08s linear; }
.vo-orb[data-state="idle"] { animation: breathe 3s ease-in-out infinite; }
.vo-orb[data-state="listening"] { background: radial-gradient(circle at 35% 30%, #9ef0c4, var(--accent-2) 45%, #134a2e 100%); }
.vo-orb[data-state="thinking"] { filter: saturate(.4); animation: breathe 1.2s ease-in-out infinite; }
.vo-state { font-size: 17px; font-weight: 600; }
.vo-captions { max-width: 640px; min-height: 5.5em; display: grid; gap: 10px; padding: 0 8px; }
.vo-user { margin: 0; color: var(--muted); font-size: 15px; }
.vo-bot { margin: 0; font-size: 20px; line-height: 1.5; }
.vo-bottom { display: flex; justify-content: center; gap: 22px; }
.vo-ctl { width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--border); background: var(--panel); color: var(--text);
  font-size: 22px; cursor: pointer; display: grid; place-items: center; }
.vo-ctl.close { background: var(--text); color: var(--panel); border: 0; }
.vo-hands { font-size: 13px; }

@media (max-width: 640px) {
  .langs { flex-wrap: nowrap; }
  .langs select { min-width: 0; }
  .settings label { flex: 1 1 45%; }
  .settings select { flex: 1; min-width: 0; }
  .vo-bot { font-size: 18px; }
}
.legend { flex-wrap: wrap; }
.input-pill textarea::placeholder { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 640px) {
  .langs { display: flex; width: 100%; }
  .langs select { flex: 1 1 0; min-width: 0; }
  .langs .icon-btn { flex: none; }
}

/* ---- modal dialogs (word correction, feedback): centred card, bottom sheet on phones ---- */
dialog.modal { padding: 0; border: 0; border-radius: 16px; background: var(--panel); color: var(--text);
  width: min(560px, calc(100vw - 32px)); max-height: min(86vh, 780px); overflow: auto; overscroll-behavior: contain;
  box-shadow: 0 24px 64px rgba(0, 0, 0, .28); animation: modal-in .16s ease-out; }
dialog.modal::backdrop { background: rgba(8, 12, 18, .45); backdrop-filter: blur(2px); }
dialog.modal > .fb-panel, dialog.modal > .rv-word-panel { margin: 0; border: 0; border-radius: 0; padding: 18px 20px 20px;
  background: var(--panel); gap: 12px; }
dialog.modal .fb-close { font-size: 24px; width: 36px; height: 36px; }
.rv-context { font-size: 16px; line-height: 1.6; color: var(--muted); }
.rv-context mark { background: color-mix(in srgb, var(--danger) 18%, transparent); color: var(--text); font-weight: 650;
  border-radius: 4px; padding: 0 2px; }
@keyframes modal-in { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }
@media (max-width: 600px) {
  dialog.modal { width: 100vw; max-width: 100vw; margin: auto 0 0; border-radius: 18px 18px 0 0; max-height: 88vh;
    padding-bottom: env(safe-area-inset-bottom); animation: sheet-in .2s ease-out; }
  dialog.modal > .fb-panel::before, dialog.modal > .rv-word-panel::before { content: ""; justify-self: center; width: 40px; height: 4px;
    border-radius: 2px; background: var(--border); margin: -8px 0 2px; }
}
@keyframes sheet-in { from { transform: translateY(100%); } to { transform: none; } }
@media (prefers-reduced-motion: reduce) { dialog.modal { animation: none; } }

/* ---- word / phrase feedback on answers (double-tap a word, select a phrase) ---- */
.fixable { touch-action: manipulation; -webkit-user-select: text; user-select: text; }
.fixable .sp-word, .fixable .reply-part { -webkit-user-select: text; user-select: text; }
.wf-floater { position: fixed; z-index: 50; font: inherit; font-size: 14px; font-weight: 600; border: 0; border-radius: 999px;
  padding: 9px 16px; background: var(--text); color: var(--panel); box-shadow: 0 6px 20px rgba(0, 0, 0, .25); cursor: pointer; }
.wf-tabs { display: flex; gap: 6px; flex-wrap: wrap; background: var(--bg); border-radius: 12px; padding: 4px; }
.wf-tab { flex: 1 1 auto; font: inherit; font-size: 14px; border: 0; background: transparent; color: var(--muted); padding: 9px 12px;
  border-radius: 9px; cursor: pointer; white-space: nowrap; }
.wf-tab.on { background: var(--panel); color: var(--text); font-weight: 650; box-shadow: 0 1px 3px rgba(0, 0, 0, .12); }
.wf-pane { display: grid; gap: 10px; }
.wf-err { font-size: 13px; color: var(--danger); }
/* header on phones: keep one row (status as a dot, counter as a number) */
#new-chat { white-space: nowrap; }
@media (max-width: 600px) {
  .topbar .tagline { display: none; }
  .top-right { gap: 6px; flex-shrink: 0; }
  .top-right .small-btn { padding: 6px 9px; font-size: 13px; white-space: nowrap; }
  .top-right .status { font-size: 0; gap: 0; }
  .contrib { font-size: 11.5px; white-space: nowrap; }
}
@media (max-width: 400px) { .brand h1 { display: none; } }

/* ---- sound fix: what is wrong and why ---- */
.wf-choice { display: grid; gap: 8px; }
.wf-choice.small { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px; }
.wf-opt { font: inherit; text-align: left; border: 1px solid var(--border); background: var(--panel); color: var(--text);
  border-radius: 12px; padding: 10px 14px; cursor: pointer; display: grid; gap: 2px; }
.wf-opt small { color: var(--muted); font-size: 12.5px; }
.wf-choice.small .wf-opt { padding: 8px 12px; font-size: 14px; }
.wf-opt:hover { border-color: var(--accent); }
.wf-opt.on { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--panel)); }
.wf-sub-pane { display: grid; gap: 8px; padding-left: 4px; }
.wf-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.wf-pair:empty { display: none; }
@media (max-width: 600px) { .wf-pair { grid-template-columns: 1fr; } }