/* ASound styles.
   Layout: one-screen app. Header with tabs on top, one 780px column scrolling beneath it; in a conversation the
   composer docks at the bottom.
   Color: UF blue (#0021A5) is the brand and action color, UF orange (#FA4616) marks the live / attention
   moments (microphone, recording, highlights). Corrections keep their own pen colors: crimson and green.
   Type: English, the language being practised, is set in a reading serif; interface text in a sans. */

:root {
  --bg: #F3F5FA;
  --surface: #FFFFFF;
  --surface-2: #E7ECF6;
  --ink: #101A3A;
  --muted: #56607A;
  --line: #D6DDEB;
  --blue: #0021A5;
  --blue-ink: #FFFFFF;
  --blue-soft: #E1E7FA;
  --header-bg: #0021A5;
  --header-ink: #FFFFFF;
  --orange: #FA4616;
  --orange-ink: #FFFFFF;
  --orange-soft: #FFE6DC;
  --pen-red: #B4232F;
  --pen-red-soft: #FBE4E5;
  --pen-green: #17784A;
  --pen-green-soft: #DDF2E6;
  --marker: #FFD3BF;
  --marker-ink: #101A3A;
  --scrim: rgba(10, 16, 40, 0.5);
  --shadow: 0 1px 2px rgba(16, 26, 58, 0.06), 0 6px 18px rgba(16, 26, 58, 0.08);
  --font-en: "Literata", Georgia, "Times New Roman", serif;
  --font-ui: "Atkinson Hyperlegible", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-ipa: "Literata", "Segoe UI", "Noto Sans", "Lucida Sans Unicode", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0A1028; --surface: #121A3A; --surface-2: #1B2550; --ink: #E6EAF6; --muted: #9AA5C4; --line: #263266;
    --blue: #8FA6FF; --blue-ink: #0A1028; --blue-soft: #1C2A66;
    --header-bg: #121A3A; --header-ink: #E6EAF6;
    --orange: #FF7A4D; --orange-ink: #1A0A04; --orange-soft: #43200F;
    --pen-red: #FF8A8F; --pen-red-soft: #3E1A22; --pen-green: #5FD39A; --pen-green-soft: #12352B;
    --marker: #6B3519; --marker-ink: #FFE9DE; --scrim: rgba(0, 0, 0, 0.6);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 6px 18px rgba(0, 0, 0, 0.3);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0A1028; --surface: #121A3A; --surface-2: #1B2550; --ink: #E6EAF6; --muted: #9AA5C4; --line: #263266;
  --blue: #8FA6FF; --blue-ink: #0A1028; --blue-soft: #1C2A66;
  --header-bg: #121A3A; --header-ink: #E6EAF6;
  --orange: #FF7A4D; --orange-ink: #1A0A04; --orange-soft: #43200F;
  --pen-red: #FF8A8F; --pen-red-soft: #3E1A22; --pen-green: #5FD39A; --pen-green-soft: #12352B;
  --marker: #6B3519; --marker-ink: #FFE9DE; --scrim: rgba(0, 0, 0, 0.6);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 6px 18px rgba(0, 0, 0, 0.3);
  color-scheme: dark;
}

html { height: 100%; box-sizing: border-box; background: var(--bg); }
*, *::before, *::after { box-sizing: inherit; }
body { height: 100%; margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 var(--font-ui); -webkit-text-size-adjust: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
input, select, textarea { color-scheme: inherit; }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 1; }
select option { background: var(--surface); color: var(--ink); }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
p { margin: 0; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
[lang="en"] { font-family: var(--font-en); }
[hidden] { display: none !important; }

.app { height: 100%; display: flex; flex-direction: column; }
.wrap { width: 100%; max-width: 780px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.stack { display: flex; flex-direction: column; gap: 28px; }
.stack-sm { display: flex; flex-direction: column; gap: 12px; }
.stack-xs { display: flex; flex-direction: column; gap: 6px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* header */
.topbar { flex: none; background: var(--header-bg); color: var(--header-ink); }
.topbar .wrap { display: flex; align-items: center; gap: 10px; min-height: 56px; }
.brand { font-weight: 700; font-size: 18px; letter-spacing: 0.01em; white-space: nowrap; display: flex; align-items: center; gap: 8px; }
.brand-mark { width: 34px; height: 34px; display: block; }
.tabs { display: flex; gap: 2px; margin-left: auto; }
.tab { border: 0; background: transparent; color: inherit; opacity: 0.78; font-weight: 700; padding: 8px 12px; border-radius: 9px; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.tab:hover { opacity: 1; background: rgba(255, 255, 255, 0.1); }
.tab[aria-selected="true"] { opacity: 1; box-shadow: inset 0 -3px 0 var(--orange); border-radius: 9px 9px 0 0; }
.count { font-size: 12px; font-variant-numeric: tabular-nums; background: var(--orange); color: var(--orange-ink); border-radius: 999px; padding: 0 6px; }
.topbar .icon-btn { color: inherit; opacity: 0.85; }
.topbar .icon-btn:hover { background: rgba(255, 255, 255, 0.12); color: inherit; opacity: 1; }
.topbar .theme-toggle { width: 44px; height: 44px; }
.theme-toggle svg { width: 21px; height: 21px; pointer-events: none; }
:root[data-layout="phone"] .topbar #theme-toggle { margin-left: auto; }
:root[data-layout="phone"] .topbar #settings-open { margin-left: 0; }
@media (max-width: 600px) {
  .topbar #theme-toggle { margin-left: auto; }
  .topbar #settings-open { margin-left: 0; }
}
:root[data-theme="dark"] .topbar, :root:not([data-theme="light"]) .topbar { color: var(--header-ink); }
@media (max-width: 560px) { .brand-name { display: none; } .tab { padding: 8px 9px; } }

/* views */
.view { flex: 1; min-height: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.view > .wrap { padding-block: 22px 56px; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); font-weight: 700; font-size: 14px; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--blue); color: var(--blue-ink); border-color: transparent; }
.btn.primary:hover { filter: brightness(1.12); }
.btn.hot { background: var(--orange); color: var(--orange-ink); border-color: transparent; }
.btn.big { min-height: 48px; padding: 0 24px; font-size: 16px; }
.btn.quiet { background: transparent; border-color: transparent; color: var(--blue); padding: 0 10px; }
.btn.on { background: var(--orange-soft); color: var(--orange); border-color: var(--orange); }
.btn:disabled, .mini:disabled, .icon-btn:disabled { opacity: 0.5; cursor: default; filter: none; }
.icon-btn { display: inline-grid; place-items: center; width: 38px; height: 38px; flex: none; border-radius: 10px; border: 0; background: transparent; color: var(--muted); }
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }
.icon-btn.sm { width: 30px; height: 30px; border-radius: 8px; }
.icon-btn.on { color: var(--orange); background: var(--orange-soft); }
.mini { display: inline-flex; align-items: center; gap: 4px; min-height: 30px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: 13px; font-weight: 700; white-space: nowrap; }
.mini:hover { color: var(--ink); border-color: var(--muted); }
.mini.done { color: var(--pen-green); background: var(--pen-green-soft); border-color: transparent; }
.mini.danger { color: var(--pen-red); border-color: var(--pen-red); }
.ic { width: 18px; height: 18px; flex: none; }
.mini .ic { width: 14px; height: 14px; }
.icon-btn.sm .ic { width: 16px; height: 16px; }

/* microphone button */
.mic-btn { position: relative; width: 44px; height: 44px; flex: none; border-radius: 50%; border: 0; background: var(--orange); color: var(--orange-ink); display: grid; place-items: center; }
.mic-btn .ic { width: 20px; height: 20px; }
.mic-btn::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 3px solid var(--orange); opacity: 0; transform: scale(calc(1 + var(--lvl, 0) * 0.35)); transition: transform 80ms linear; }
.mic-btn.rec { background: var(--pen-red); }
.mic-btn.rec::after { opacity: 0.55; border-color: var(--pen-red); }
.mic-btn.busy { background: var(--surface-2); color: var(--muted); }
.mic-btn.big { width: 64px; height: 64px; }
.mic-btn.big .ic { width: 28px; height: 28px; }
@media (prefers-reduced-motion: reduce) { .mic-btn::after { transition: none; } }

/* shared text */
.title { font-size: 23px; line-height: 1.3; }
.lede { color: var(--muted); }
.field-label { font-size: 13px; font-weight: 700; color: var(--muted); letter-spacing: 0.03em; }
.sec { font-size: 16px; display: flex; align-items: center; gap: 10px; }
.sec-tools { margin-left: auto; }
.empty-line { color: var(--muted); font-size: 14px; }
.hint-line { font-size: 13px; color: var(--muted); }
.banner { background: var(--pen-red-soft); border-radius: 10px; padding: 10px 12px; font-size: 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.note-card { background: var(--surface-2); border-radius: 12px; padding: 12px 14px; font-size: 14px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.dots { display: inline-flex; gap: 3px; margin-left: 6px; vertical-align: middle; }
.dots i { width: 5px; height: 5px; border-radius: 50%; background: currentColor; opacity: 0.3; animation: blink 1.2s infinite ease-in-out; }
.dots i:nth-child(2) { animation-delay: 0.2s; }
.dots i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 0.9; } }
@media (prefers-reduced-motion: reduce) { .dots i { animation: none; opacity: 0.6; } }

/* corrections: teacher's pen */
del { color: var(--pen-red); text-decoration: line-through; text-decoration-thickness: 2px; background: var(--pen-red-soft); border-radius: 3px; padding: 0 2px; }
ins { color: var(--pen-green); text-decoration: none; background: var(--pen-green-soft); box-shadow: inset 0 -2px 0 var(--pen-green); border-radius: 3px 3px 0 0; padding: 0 2px; }
mark.miss { background: transparent; color: var(--pen-red); text-decoration: underline wavy var(--pen-red); text-underline-offset: 5px; }
.term { font-family: var(--font-en); font-weight: 600; font-size: 18px; line-height: 1.35; background: linear-gradient(transparent 56%, var(--marker) 56%); color: var(--ink); padding: 0 2px; }
.ipa { font-family: var(--font-ipa); color: var(--muted); font-size: 14px; }
.ex { font-family: var(--font-en); font-style: italic; color: var(--muted); font-size: 15px; }

/* option grids (scenarios, drills) */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.opt { text-align: left; display: flex; flex-direction: column; gap: 2px; padding: 12px 14px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); min-height: 100px; }
.opt:hover { border-color: var(--muted); }
.opt-en { font-family: var(--font-en); font-weight: 600; font-size: 17px; line-height: 1.25; }
.opt-zh { font-weight: 700; font-size: 14px; }
.opt-desc { color: var(--muted); font-size: 13px; line-height: 1.4; margin-top: 2px; }
.opt[aria-pressed="true"] { border-color: var(--blue); box-shadow: inset 0 0 0 1px var(--blue); background: var(--blue-soft); }
.opt.new::before { content: attr(data-badge); align-self: flex-start; font-size: 11px; font-weight: 700; color: var(--orange-ink); background: var(--orange); border-radius: 999px; padding: 0 7px; margin-bottom: 4px; }
.field textarea, .field input[type="text"], .search { width: 100%; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); padding: 10px 12px; }
.field textarea { resize: vertical; min-height: 64px; }
.start-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.seg { display: inline-flex; flex-wrap: wrap; background: var(--surface-2); border-radius: 11px; padding: 3px; gap: 2px; }
.seg button { border: 0; background: transparent; border-radius: 8px; padding: 6px 11px; font-weight: 700; color: var(--muted); display: flex; flex-direction: column; align-items: center; line-height: 1.2; min-width: 54px; }
.seg button small { font-weight: 400; font-size: 12px; }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }
.resume { border: 1px solid var(--blue); background: var(--blue-soft); border-radius: 12px; padding: 12px 14px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.resume-text { flex: 1; min-width: 200px; display: flex; flex-direction: column; }
.resume-text span { color: var(--muted); font-size: 14px; }
.sample-card { border: 1px dashed var(--line); border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.history { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.hist-row { display: flex; align-items: center; gap: 6px; border-bottom: 1px solid var(--line); }
.hist-row .hist { border-bottom: 0; }
.voice-row { align-items: center; }
.voice-note { flex: 1; min-width: 0; }
.voice-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.voice-opt { min-height: 0; cursor: pointer; }
.voice-opt .row { justify-content: space-between; flex-wrap: nowrap; }
.hist { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: flex-start; gap: 2px; text-align: left; border: 0; border-bottom: 1px solid var(--line); background: transparent; padding: 12px 2px; }
.hist:hover .hist-title { color: var(--blue); }
.hist-title { font-family: var(--font-en); font-weight: 600; font-size: 16px; }
.hist-meta { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }

/* chat */
.view.chat { display: flex; flex-direction: column; overflow: hidden; }
.chat-head { flex: none; border-bottom: 1px solid var(--line); background: var(--surface); }
.chat-head .wrap { display: flex; align-items: center; gap: 10px; min-height: 52px; }
.chat-title { font-family: var(--font-en); font-weight: 600; font-size: 17px; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.level-chip { flex: none; font-size: 12px; font-weight: 700; border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; color: var(--muted); }
.chat-head .spacer { flex: 1; }
.end-bar { flex: none; background: var(--surface-2); }
.end-bar .wrap { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding-block: 8px; }
.end-bar span { flex: 1; min-width: 180px; font-weight: 700; }
.thread-scroll { flex: 1; min-height: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.thread-scroll .wrap { padding-block: 16px 24px; display: flex; flex-direction: column; gap: 12px; }
.scene-card { background: var(--blue-soft); border-radius: 12px; padding: 10px 14px; font-size: 14px; display: flex; flex-direction: column; gap: 4px; }
.scene-card strong { font-family: var(--font-en); font-size: 16px; }
.words { display: flex; gap: 6px; flex-wrap: wrap; }
.word-chip { font-family: var(--font-en); font-size: 15px; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; }
.word-chip.used { border-color: var(--pen-green); color: var(--pen-green); background: var(--pen-green-soft); }
.word-chip.added { border-style: dashed; }
.word-inputs { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; }
.word-inputs input, .field input[type="text"] { width: 100%; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); padding: 9px 11px; }
.thread { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.msg { display: flex; flex-direction: column; gap: 6px; }
.msg.ai { align-items: flex-start; }
.msg.me { align-items: flex-end; }
.bubble { max-width: min(88%, 580px); padding: 10px 14px; border-radius: 16px; font-family: var(--font-en); font-size: 17px; line-height: 1.5; overflow-wrap: anywhere; }
.msg.ai .bubble { background: var(--surface); border: 1px solid var(--line); border-bottom-left-radius: 5px; }
.msg.me .bubble { background: var(--blue-soft); border-bottom-right-radius: 5px; }
.bubble.native { font-family: var(--font-ui); font-size: 16px; }
.bubble.thinking { font-family: var(--font-ui); font-size: 14px; color: var(--muted); }
.bubble .err { font-family: var(--font-ui); font-size: 14px; color: var(--pen-red); }
.msg-tools { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.msg-native { max-width: min(88%, 580px); color: var(--muted); font-size: 14px; padding-left: 4px; }
.live-line { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); }
.live-line .meter { max-width: 120px; }

/* feedback + help cards */
.fb { width: min(94%, 620px); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; font-size: 14px; display: flex; flex-direction: column; gap: 8px; }
.fb.pending, .fb.failed { color: var(--muted); flex-direction: row; align-items: center; flex-wrap: wrap; gap: 8px; }
.fb-head { display: flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; letter-spacing: 0.06em; color: var(--pen-red); text-transform: uppercase; }
.fb-ok .fb-head { color: var(--pen-green); letter-spacing: 0; font-size: 14px; text-transform: none; }
.fb-help .fb-head { color: var(--orange); }
.fb-corrected { font-family: var(--font-en); font-size: 16px; line-height: 1.75; }
.fb-corrected .icon-btn { vertical-align: middle; }
.fb-issues { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.fb-issues li { display: grid; grid-template-columns: auto 1fr; gap: 2px 8px; align-items: baseline; }
.issue-body { display: flex; flex-direction: column; min-width: 0; }
.tag { font-size: 12px; font-weight: 700; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.tag-pronunciation { background: var(--marker); color: var(--marker-ink); }
.tag-chinese { background: var(--blue-soft); color: var(--blue); }
.pair { font-family: var(--font-en); font-size: 15px; }
.pair s { color: var(--pen-red); }
.pair b { color: var(--pen-green); font-weight: 600; }
.fb-praise { color: var(--pen-green); }
.fb-better { border-top: 1px dashed var(--line); padding-top: 8px; display: flex; flex-direction: column; gap: 8px; }
.fb-label { font-size: 12px; font-weight: 700; letter-spacing: 0.06em; color: var(--muted); }
.better-row { display: flex; gap: 6px; align-items: flex-start; flex-wrap: wrap; }
.better-text { flex: 1; min-width: 0; }
.better-en { font-family: var(--font-en); font-size: 15px; }
.help-en { font-family: var(--font-en); font-size: 19px; line-height: 1.45; }
.say-check { display: flex; flex-direction: column; gap: 6px; }

/* composer */
.composer { flex: none; background: var(--surface); border-top: 1px solid var(--line); }
.composer .wrap { padding-block: 10px 12px; display: flex; flex-direction: column; gap: 8px; }
.composer-row { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea { flex: 1; min-width: 0; resize: none; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; font: 17px/1.4 var(--font-en); background: var(--bg); color: var(--ink); min-height: 44px; max-height: 160px; }
.composer .send { min-height: 44px; padding: 0 14px; }
.composer .hint-btn { width: 44px; height: 44px; }
.composer-note { font-size: 13px; color: var(--muted); }
.hints { display: flex; flex-direction: column; gap: 6px; }
.hints-head { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.hints-head > span { flex: 1; }
.hint { display: flex; gap: 4px; align-items: center; }
.hint-pick { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: flex-start; text-align: left; border: 1px solid var(--line); background: var(--bg); border-radius: 10px; padding: 7px 10px; }
.hint-pick:hover { border-color: var(--blue); }
.hint-en { font-size: 15px; }
.hint-zh { color: var(--muted); font-size: 13px; }

/* summaries, reports */
.sum-head { display: flex; flex-direction: column; gap: 4px; align-items: flex-start; }
.sum-head .back { margin-left: -10px; margin-bottom: 6px; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; color: var(--orange); text-transform: uppercase; }
.sum-title { font-family: var(--font-en); font-size: 30px; line-height: 1.15; }
.sum-meta { color: var(--muted); font-variant-numeric: tabular-nums; }
.overall { font-size: 17px; line-height: 1.75; max-width: 64ch; }
.loading-card { border: 1px solid var(--line); background: var(--surface); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.plain { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.good li { display: flex; gap: 8px; align-items: flex-start; }
.good .ic { color: var(--pen-green); margin-top: 3px; }
.focus li { display: flex; flex-direction: column; gap: 2px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.exprs { gap: 0; border-top: 1px solid var(--line); }
.expr { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid var(--line); }
.expr-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.expr-top { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.expr-tools { display: flex; gap: 4px; align-items: center; flex: none; }
.expr-native { font-size: 14px; }
.next { background: var(--blue-soft); border-radius: 12px; padding: 12px 14px; }
.transcript summary { cursor: pointer; font-weight: 700; color: var(--muted); }
.transcript ol { margin-top: 10px; gap: 6px; }
.tline { display: grid; grid-template-columns: 3em 1fr; gap: 8px; }
.tline .who { color: var(--muted); font-size: 13px; padding-top: 2px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* level badge (1-5) */
.level-badge { display: flex; align-items: center; gap: 14px; }
.level-pips { display: flex; gap: 4px; }
.level-pips i { width: 26px; height: 8px; border-radius: 4px; background: var(--surface-2); }
.level-pips i.on { background: var(--orange); }
.level-name { font-size: 20px; font-weight: 700; }
.scores { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.score-tile { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; display: flex; flex-direction: column; gap: 2px; }
.score-tile b { font-size: 22px; font-variant-numeric: tabular-nums; }

/* accent drills & assessment */
.drill-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.progress { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.drill-text { font-family: var(--font-en); font-size: 23px; line-height: 1.5; font-weight: 500; overflow-wrap: anywhere; }
.drill-text.small { font-size: 18px; }
.drill-text.para { font-size: 20px; line-height: 1.7; }
.drill-native { color: var(--muted); }
.mini-label { font-size: 12px; font-weight: 700; letter-spacing: 0.06em; color: var(--muted); }
.sounds { font-family: var(--font-en); font-size: 17px; background: var(--surface-2); border-radius: 10px; padding: 8px 12px; overflow-wrap: anywhere; }
.ipa-line { font-family: var(--font-ipa); font-size: 15px; color: var(--muted); overflow-wrap: anywhere; }
.tips { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.tips li { display: flex; gap: 4px 10px; align-items: baseline; flex-wrap: wrap; }
.tips .term { font-size: 16px; }
.attempt-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.attempt textarea { width: 100%; resize: vertical; min-height: 64px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); padding: 10px 12px; font: 17px/1.4 var(--font-en); }
.score { display: flex; align-items: center; gap: 10px; font-weight: 700; font-variant-numeric: tabular-nums; flex-wrap: wrap; }
.meter { flex: 1; min-width: 80px; max-width: 220px; height: 8px; border-radius: 99px; background: var(--surface-2); overflow: hidden; display: inline-block; }
.meter i { display: block; height: 100%; border-radius: 99px; background: var(--pen-green); }
.score.mid .meter i { background: var(--blue); }
.score.low .meter i { background: var(--pen-red); }
.heard { color: var(--muted); font-size: 14px; }
.heard span { font-size: 15px; color: var(--ink); }
.drill-nav { display: flex; gap: 10px; flex-wrap: wrap; justify-content: space-between; }
.trend { display: flex; align-items: flex-end; gap: 6px; height: 64px; }
.trend i { flex: 1; max-width: 28px; background: var(--blue); border-radius: 4px 4px 0 0; min-height: 3px; }

/* vocab */
.vocab-head { display: flex; align-items: baseline; gap: 10px; }
.pill { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.search { height: 42px; }
.vocab-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.word { padding: 14px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.word-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.word .ex .icon-btn { vertical-align: middle; }
.word-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin-top: 2px; }
.word-meta > span { margin-right: auto; }
.empty { text-align: center; color: var(--muted); padding: 36px 16px; border: 1px dashed var(--line); border-radius: 12px; }

/* settings sheet */
.sheet { position: fixed; inset: 0; z-index: 50; background: var(--scrim); display: flex; align-items: flex-end; justify-content: center; }
.sheet-panel { width: 100%; max-width: 540px; max-height: 92%; overflow-y: auto; background: var(--surface); border-radius: 18px 18px 0 0; padding-top: 16px; padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px)); padding-left: max(18px, env(safe-area-inset-left, 0px)); padding-right: max(18px, env(safe-area-inset-right, 0px)); display: flex; flex-direction: column; gap: 18px; box-shadow: var(--shadow); }
@media (min-width: 640px) { .sheet { align-items: center; } .sheet-panel { border-radius: 18px; } }
.sheet-head { display: flex; align-items: center; justify-content: space-between; }
.sheet-head h2 { font-size: 18px; }
.sheet select { flex: 1; min-width: 0; height: 40px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); padding: 0 10px; }
.sheet input[type="range"] { width: 100%; accent-color: var(--blue); }
.check { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.check input { width: 18px; height: 18px; accent-color: var(--blue); }
.engine-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.engine-list li { display: flex; gap: 8px; }
.engine-list b { min-width: 7em; }

.voice-pill { position: fixed; z-index: 55; left: max(12px, env(safe-area-inset-left, 0px)); bottom: calc(12px + env(safe-area-inset-bottom, 0px)); background: var(--surface); color: var(--muted); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 999px; padding: 6px 12px; font-size: 12px; font-variant-numeric: tabular-nums; display: flex; align-items: center; gap: 8px; max-width: calc(100% - 24px); }
.voice-pill .meter { width: 70px; min-width: 70px; height: 6px; }
.voice-pill .meter i { background: var(--orange); }
.llm-pill { left: auto; right: max(12px, env(safe-area-inset-right, 0px)); }
.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(96px + env(safe-area-inset-bottom, 0px)); z-index: 60; max-width: calc(100% - 32px); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 14px; box-shadow: var(--shadow); }
.speech-notice { position: fixed; z-index: 58; left: 50%; transform: translateX(-50%); bottom: calc(88px + env(safe-area-inset-bottom, 0px)); width: min(360px, calc(100% - 32px)); padding: 12px 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); color: var(--ink); box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.speech-notice .row { flex-wrap: wrap; }

/* models & downloads */
.sec-title { font-size: 17px; }
.setup-card { border-color: var(--orange); }
.pack-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.pack { display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.pack.in-use { border-color: var(--blue); box-shadow: inset 3px 0 0 var(--blue); }
.pack-main { display: flex; flex-direction: column; gap: 6px; min-width: 0; flex: 1; }
.pack-actions { display: flex; gap: 6px; align-items: center; flex: none; }
.pack-progress .meter i { background: var(--orange); }
.pack-error { font-size: 13px; color: var(--pen-red); }
.pill.ok { display: inline-flex; align-items: center; gap: 4px; color: var(--pen-green); font-weight: 700; }
.pill.ok .ic { width: 14px; height: 14px; }
.license { font-size: 12px; opacity: 0.8; white-space: nowrap; }
.tag { font-size: 11px; font-weight: 700; letter-spacing: 0.04em; border-radius: 999px; padding: 1px 8px; }
.tag.rec { background: var(--orange-soft); color: var(--orange); }
.tag.on { background: var(--blue-soft); color: var(--blue); }
@media (max-width: 520px) { .pack { flex-direction: column; } .pack-actions { align-self: flex-end; } }

/* expressions used for real, rehearsal pocket card, debrief */
.used-chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; margin-top: 4px; }
.used-chip { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 700; color: var(--pen-green); background: var(--pen-green-soft); border-radius: 999px; padding: 2px 10px; }
.used-chip .ic { width: 13px; height: 13px; }
.used-chip.owned { color: var(--orange); background: var(--orange-soft); }
.pocket { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 6px; }
.pocket li { display: flex; flex-wrap: wrap; align-items: center; gap: 2px 8px; }
.pocket-en { font-family: var(--font-en); font-size: 16px; }
.debrief { border-color: var(--orange); }
.debrief textarea { width: 100%; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); padding: 10px 12px; font: inherit; }
input[type="date"] { height: 38px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); padding: 0 10px; font: inherit; }
.try-use { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.note-card.warn { background: var(--orange-soft); color: var(--ink); }
.native-type textarea { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); padding: 8px 10px; font: inherit; resize: vertical; }
@media (max-width: 420px) { #live-toggle .btn-text { display: none; } #live-toggle { padding: 0 11px; } .chat-head .level-chip { display: none; } }

/* extra practice modes */
.mode-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.mode-card { display: flex; gap: 12px; align-items: flex-start; text-align: left; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px; color: var(--ink); font: inherit; }
.mode-card:hover { border-color: var(--blue); }
.mode-icon { flex: none; width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: var(--orange-soft); color: var(--orange); }
.mode-text { display: flex; flex-direction: column; gap: 2px; }
[dir="rtl"] .live-line .meter i { transform-origin: right center; }
.live-line .meter i { width: 100%; transform: scaleX(0); transform-origin: left center; transition: transform 60ms linear; }