:root {
  --bg0:#0c0e14; --bg1:#11141c; --bg2:#1b2030;
  --ink:#e7ebf3; --muted:#7d88a3; --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05); --indigo:#6e7bf2; --amber:#f5b547;
}
* { box-sizing:border-box; }
body {
  margin:0; min-height:100vh; color:var(--ink);
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  background:radial-gradient(130% 120% at 100% 0%, var(--bg2) 0%, var(--bg1) 55%, var(--bg0) 100%);
}
#app { max-width:430px; margin:0 auto; padding:14px 20px 40px; }
.topbar { display:flex; align-items:center; height:48px; }
.topbar .title { font-size:11px; letter-spacing:.22em; color:var(--muted); font-weight:600; }
.topbar .back { background:var(--glass); border:1px solid var(--line); color:var(--ink);
  width:34px; height:34px; border-radius:50%; font-size:20px; cursor:pointer; margin-right:12px; }
.spacer { flex:1; }

.hello { font-size:34px; margin:18px 0 2px; }
.sub { color:var(--muted); margin:0 0 22px; }
.stats { display:flex; gap:12px; margin-bottom:22px; }
.stat { flex:1; background:var(--glass); border:1px solid var(--line); border-radius:16px;
  padding:14px 0; text-align:center; }
.stat b { display:block; font-size:24px; }
.stat span { font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; }

.mode { display:flex; align-items:center; gap:14px; width:100%; text-align:left;
  background:var(--glass); border:1px solid var(--line); color:var(--ink);
  border-radius:18px; padding:16px; margin:12px 0; cursor:pointer; }
.mode.primary { background:rgba(110,123,242,.16); border-color:rgba(110,123,242,.5); }
.mode[disabled] { opacity:.5; cursor:default; }
.mode .ic { font-size:22px; width:30px; text-align:center; }
.mode .m-txt { display:flex; flex-direction:column; }
.mode .m-txt b { font-size:15px; }
.mode .m-txt i { font-style:normal; font-size:12px; color:var(--muted); }
.mode .badge { margin-left:auto; font-size:12px; font-weight:600; padding:4px 10px;
  border-radius:999px; background:rgba(255,255,255,.10); }
.mode.primary .badge { background:var(--indigo); }
.mode .badge.soon { background:rgba(245,181,71,.18); color:var(--amber); }

.card-stage { padding-top:8px; }
.qcard { background:var(--glass); border:1px solid var(--line); border-radius:24px;
  padding:36px 24px; text-align:center; box-shadow:0 20px 50px -24px #000;
  backdrop-filter:blur(14px); }
.qcard .big { font-size:64px; line-height:1.1; margin:6px 0 14px; }
.qcard .hint { color:var(--muted); font-size:13px; }
.qcard .answer { margin-top:18px; }
.qcard .answer .gloss { font-size:22px; }
.qcard .answer .ipa, .qcard .answer .translit { color:var(--amber); margin-top:6px; }
.qcard .contrast { color:var(--muted); font-size:13px; margin-top:10px; }

.btn-row { display:flex; gap:10px; margin-top:22px; }
.btn { flex:1; padding:13px 0; border-radius:14px; font-size:14px; font-weight:600;
  border:1px solid var(--line); background:var(--glass); color:var(--ink); cursor:pointer; }
.btn.reveal { background:var(--indigo); border-color:transparent; }
.r-again { background:rgba(229,90,90,.18); border-color:rgba(229,90,90,.4); }
.r-hard  { background:rgba(245,181,71,.16); border-color:rgba(245,181,71,.4); }
.r-good  { background:rgba(110,123,242,.20); border-color:rgba(110,123,242,.5); }
.r-easy  { background:rgba(125,211,168,.18); border-color:rgba(125,211,168,.45); }

.speak-row { display:flex; gap:10px; justify-content:center; margin-top:12px; }
.speak { width:46px; height:46px; border-radius:50%;
  background:rgba(245,181,71,.15); border:1px solid rgba(245,181,71,.45); color:var(--amber);
  font-size:20px; line-height:1; cursor:pointer; transition:transform .1s, background .15s; }
.speak.slow { background:rgba(125,211,168,.14); border-color:rgba(125,211,168,.42); }
.speak:hover { background:rgba(245,181,71,.26); }
.speak.slow:hover { background:rgba(125,211,168,.24); }
.speak:active { transform:scale(.92); }
.voicebtn { width:34px; height:34px; border-radius:50%; cursor:pointer; line-height:1;
  background:var(--glass); border:1px solid var(--line); color:var(--ink); font-size:15px; }
.voicebtn:active { transform:scale(.92); }

.qcard.reading { padding:24px 22px; text-align:left; }
.passage { font-size:23px; line-height:2; }
.rtoken { cursor:pointer; border-bottom:1px dotted rgba(255,255,255,.22); padding:0 1px; }
.rtoken:active { color:var(--amber); }
.rnew { color:#ffd27a; border-bottom:2px solid rgba(245,181,71,.7); border-radius:3px;
  background:linear-gradient(180deg, transparent 60%, rgba(245,181,71,.20) 0); padding:0 3px; }
.wordpop { margin-top:14px; background:var(--glass); border:1px solid var(--line);
  border-radius:12px; padding:12px 14px; font-size:17px; }
.wordpop .pop-speak { float:right; cursor:pointer; }
.newword { margin-top:16px; display:flex; align-items:center; gap:10px; flex-wrap:wrap;
  font-size:14px; color:var(--muted); }
.newword .btn { flex:0 0 auto; margin-left:auto; }

/* typed-answer validation (Reviews) */
.answer-input { display:block; width:100%; margin:14px 0 4px; padding:13px 14px;
  border-radius:12px; border:1px solid var(--line); background:rgba(0,0,0,.25);
  color:var(--ink); font-size:18px; text-align:center; outline:none; }
.answer-input:focus { border-color:var(--indigo); }
.answer-input:disabled { opacity:.7; }
.verdict { margin-top:14px; font-size:17px; }
.verdict.good { color:#7dd3a8; }
.verdict.bad { color:#e98c8c; }
.btn#iwr { flex:0 0 auto; }

/* reading aids: gist + full translation */
.btn.ghost { background:var(--glass); color:var(--ink); border:1px solid var(--line); }
.read-aids { margin-top:14px; }
.aid-out { margin-top:10px; }
.gist-line { color:var(--amber); font-style:italic; font-size:16px; }
.translation-line { margin-top:8px; color:var(--ink); font-size:16px; line-height:1.6; }

/* segmented toggle (Listen: Words / Sentences) */
.seg { display:flex; gap:6px; background:var(--glass); border:1px solid var(--line);
  border-radius:12px; padding:4px; margin-bottom:16px; }
.seg-btn { flex:1; padding:9px; border-radius:9px; border:none; background:transparent;
  color:var(--muted); font-size:14px; font-weight:600; cursor:pointer; }
.seg-btn.on { background:var(--indigo); color:#fff; }

/* Patterns (build sentences) */
.frame-head { font-size:18px; font-weight:600; margin:4px 0 2px; }
.frame-head span { color:var(--muted); font-weight:400; font-size:14px; }
.pat-prog { font-size:12px; color:var(--muted); margin-bottom:12px; }
.patcard { text-align:left; padding:22px 20px; }
.prompt-en { font-size:18px; margin-bottom:14px; }
.pans { min-height:48px; display:flex; flex-wrap:wrap; gap:8px; align-items:center;
  padding:10px; border-radius:12px; border:1px dashed var(--line); margin-bottom:14px; }
.pans .ph { font-size:13px; color:var(--muted); }
.ptiles { display:flex; flex-wrap:wrap; gap:8px; }
.ptile { font-size:18px; padding:9px 14px; border-radius:10px; cursor:pointer;
  background:var(--glass); border:1px solid var(--line); color:var(--ink); }
.ptile.on { background:rgba(110,123,242,.18); border-color:rgba(110,123,242,.5); }
.ptile:disabled { opacity:.6; cursor:default; }
.gloss-lite { font-size:14px; margin-top:8px; }

/* account / sign-in */
.acct { background:var(--glass); border:1px solid var(--line); color:var(--ink);
  border-radius:999px; padding:6px 12px; font-size:12px; cursor:pointer; }
#account #gbtn { display:flex; }

.empty { text-align:center; color:var(--muted); padding:60px 0; }
.empty .add { margin-top:16px; }

.toast { position:fixed; left:50%; bottom:28px; transform:translateX(-50%);
  background:#1b2030; border:1px solid var(--line); color:var(--ink);
  padding:11px 18px; border-radius:12px; font-size:14px; box-shadow:0 10px 30px -10px #000; }

/* feedback widget */
.fb-open { display:block; margin:22px auto 0; background:var(--glass); border:1px solid var(--line);
  color:var(--muted); border-radius:999px; padding:9px 18px; font-size:13px; cursor:pointer; }
.fb-overlay { position:fixed; inset:0; background:rgba(0,0,0,.55); }
.fb-panel { position:fixed; left:50%; bottom:0; transform:translateX(-50%);
  width:100%; max-width:430px; background:var(--bg1); border:1px solid var(--line);
  border-radius:20px 20px 0 0; padding:20px; box-shadow:0 -20px 50px -20px #000; }
.fb-title { margin:0 0 12px; font-size:18px; }
.fb-text { width:100%; min-height:110px; resize:vertical; border-radius:12px; padding:12px;
  background:rgba(0,0,0,.25); border:1px solid var(--line); color:var(--ink); font-size:15px; outline:none; }
.fb-text:focus { border-color:var(--indigo); }
.fb-moods { display:flex; gap:8px; margin:12px 0; }
.fb-moods button { font-size:22px; width:48px; height:44px; border-radius:12px;
  background:var(--glass); border:1px solid var(--line); cursor:pointer; }
.fb-moods button.on { background:rgba(110,123,242,.20); border-color:rgba(110,123,242,.5); }
.fb-contact { width:100%; margin-bottom:12px; padding:11px 12px; border-radius:12px;
  background:rgba(0,0,0,.25); border:1px solid var(--line); color:var(--ink); font-size:14px; outline:none; }
.fb-contact:focus { border-color:var(--indigo); }
.fb-actions { display:flex; gap:10px; margin-top:12px; }
#fb-ts { min-height:0; }