:root{
  --bg:#14112e;--bg2:#1e1945;--card:#262058;--card2:#30297a;--line:#ffffff14;
  --acc:#ff7ab6;--acc2:#5ee6e0;--yel:#ffcf5c;--red:#ff5a7a;--green:#4fe39a;
  --txt:#f4f1ff;--mut:#a9a1d8;--r:20px;
  --st:env(safe-area-inset-top);--sb:env(safe-area-inset-bottom);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overscroll-behavior:none}
body{font-family:ui-rounded,"SF Pro Rounded",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--txt);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea,select{font:inherit;color:var(--txt);background:#ffffff10;border:1px solid var(--line);border-radius:14px;padding:12px;width:100%}
textarea{min-height:70px;resize:vertical}
#app{min-height:100%;display:flex;flex-direction:column}
.page{flex:1;display:flex;flex-direction:column;padding:calc(var(--st) + 14px) 18px calc(var(--sb) + 90px);max-width:640px;width:100%;margin:0 auto}
.top{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.top h1{margin:0;font-size:24px;flex:1}
.icon-btn{width:40px;height:40px;border-radius:50%;background:#ffffff12;font-size:20px;display:grid;place-items:center}
h2{font-size:15px;color:var(--mut);font-weight:600;margin:22px 4px 10px;text-transform:uppercase;letter-spacing:.06em}
.muted{color:var(--mut)}
.small{font-size:13px}
.card{background:var(--card);border-radius:var(--r);padding:16px;box-shadow:0 6px 24px #0005}
.grid{display:grid;gap:12px}
.row{display:flex;gap:10px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:6px;background:#ffffff12;border-radius:99px;padding:6px 12px;font-size:14px}
.btn{background:linear-gradient(135deg,var(--acc),#b56bff);border-radius:16px;padding:15px 18px;font-weight:700;font-size:17px;width:100%;box-shadow:0 8px 24px #ff7ab640}
.btn.ghost{background:#ffffff12;box-shadow:none}
.btn.green{background:linear-gradient(135deg,#3fd68a,#2bb5c4)}
.btn:active{transform:scale(.98)}

/* hero / mascot */
.lumi{width:72px;height:72px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff 0 6%,transparent 7%),radial-gradient(circle at 65% 30%,#fff 0 6%,transparent 7%),radial-gradient(circle at 50% 60%,#ffb3d6,var(--acc) 55%,#a24bff);box-shadow:0 0 40px #ff7ab680;flex:none;position:relative}
.lumi::after{content:"";position:absolute;left:34%;right:34%;bottom:26%;height:10%;border-radius:0 0 40px 40px;background:#3a0d33}
.hello{display:flex;gap:14px;align-items:center;margin:4px 0 6px}
.hello .bubble{background:var(--card);border-radius:18px 18px 18px 4px;padding:12px 14px;font-size:16px}

/* profiles */
.prof{display:flex;gap:14px;align-items:center;text-align:left;width:100%}
.prof .ava{font-size:40px;width:64px;height:64px;border-radius:20px;background:var(--card2);display:grid;place-items:center}
.prof b{font-size:20px}
.flag{font-size:22px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.stat{background:var(--card);border-radius:16px;padding:12px;text-align:center}
.stat b{display:block;font-size:22px}
.stat span{font-size:12px;color:var(--mut)}

/* lessons path */
.unit{margin-top:8px}
.lesson{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:var(--card);border-radius:18px;padding:12px 14px;margin-bottom:10px}
.lesson .em{font-size:26px;width:48px;height:48px;border-radius:14px;background:var(--card2);display:grid;place-items:center;flex:none}
.lesson .t{flex:1}
.lesson .t b{display:block}
.lesson .t small{color:var(--mut)}
.ring{width:42px;height:42px;flex:none}
.done .em{background:linear-gradient(135deg,#3fd68a55,#2bb5c455)}

/* tab bar */
.tabs{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:space-around;padding:8px 8px calc(var(--sb) + 8px);background:#14112ef0;backdrop-filter:blur(14px);border-top:1px solid var(--line);z-index:5}
.tabs button{flex:1;display:flex;flex-direction:column;align-items:center;font-size:12px;color:var(--mut);gap:2px;padding:4px}
.tabs button span{font-size:22px}
.tabs button.on{color:var(--txt)}
.badge{background:var(--red);color:#fff;border-radius:99px;font-size:11px;padding:1px 6px;margin-left:4px}

/* sheet */
.sheet-bg{position:fixed;inset:0;background:#0008;z-index:10;display:flex;align-items:flex-end;animation:fade .2s}
.sheet{background:var(--bg2);border-radius:26px 26px 0 0;padding:22px 20px calc(var(--sb) + 20px);width:100%;max-width:640px;margin:0 auto;max-height:90vh;overflow:auto;animation:up .25s}
.sheet h3{margin:0 0 4px;font-size:22px}
.goals{margin:14px 0 18px;padding:0;list-style:none}
.goals li{padding:9px 0;border-bottom:1px solid var(--line);display:flex;gap:10px}
.goals li::before{content:"🎯"}
.seg{display:flex;background:#ffffff10;border-radius:14px;padding:4px;gap:4px}
.seg button{flex:1;padding:9px;border-radius:10px;font-size:14px;color:var(--mut)}
.seg button.on{background:var(--card2);color:var(--txt);font-weight:700}
label.f{display:block;margin:12px 0 6px;font-size:14px;color:var(--mut)}
@keyframes up{from{transform:translateY(40px);opacity:.4}}
@keyframes fade{from{opacity:0}}

/* CALL */
.call{position:fixed;inset:0;background:radial-gradient(circle at 50% 30%,#3d2b8f,#14112e 70%);display:flex;flex-direction:column;align-items:center;padding:calc(var(--st) + 18px) 20px calc(var(--sb) + 26px);z-index:20}
.call .head{text-align:center}
.call .head b{font-size:20px;display:block}
.call .timer{color:var(--mut);font-variant-numeric:tabular-nums;margin-top:4px}
.orb-wrap{flex:1;display:grid;place-items:center;width:100%}
.orb{width:180px;height:180px;border-radius:50%;position:relative;transition:transform .15s}
.orb .lumi{width:100%;height:100%}
.orb::before{content:"";position:absolute;inset:-18px;border-radius:50%;border:3px solid #ff7ab655;opacity:0;transition:.2s}
.call.speaking .orb{animation:talk .45s infinite alternate}
.call.listening .orb::before{opacity:1;border-color:var(--acc2);animation:pulse 1.4s infinite}
.call.thinking .orb{animation:think 1.2s infinite}
@keyframes talk{to{transform:scale(1.06)}}
@keyframes pulse{0%{transform:scale(.95);opacity:1}100%{transform:scale(1.25);opacity:0}}
@keyframes think{50%{transform:rotate(6deg) scale(.97)}}
.state{margin-top:22px;color:var(--mut);height:22px;text-align:center}
.subs{width:100%;max-width:560px;min-height:110px;text-align:center;font-size:19px;line-height:1.4;padding:0 6px}
.subs .de{color:var(--mut);font-size:15px;margin-top:6px}
.subs .you{color:var(--acc2);font-size:16px;margin-top:10px}
.fixchip{display:inline-block;background:#ffcf5c22;border:1px solid #ffcf5c66;color:var(--yel);border-radius:12px;padding:6px 10px;font-size:14px;margin-top:8px;max-width:100%}
.ctrls{display:flex;gap:22px;align-items:center;justify-content:center;margin-top:18px}
.cbtn{width:62px;height:62px;border-radius:50%;background:#ffffff18;font-size:26px;display:grid;place-items:center}
.cbtn.on{background:#fff;color:#14112e}
.cbtn.end{background:var(--red);width:74px;height:74px;font-size:30px}
.cbtn.talk{background:var(--acc2);color:#14112e}
.clabel{font-size:11px;color:var(--mut);text-align:center;margin-top:6px}

/* summary */
.score-ring{display:flex;gap:16px;align-items:center}
.bars{display:grid;gap:9px;margin-top:6px}
.bar{display:grid;grid-template-columns:110px 1fr 36px;gap:8px;align-items:center;font-size:14px}
.bar i{display:block;height:9px;border-radius:9px;background:#ffffff14;overflow:hidden}
.bar i em{display:block;height:100%;border-radius:9px;background:linear-gradient(90deg,var(--acc2),var(--green))}
.mistake{background:var(--card);border-radius:16px;padding:12px 14px;margin-bottom:10px;border-left:4px solid var(--yel)}
.mistake .you{text-decoration:line-through;text-decoration-color:var(--red);color:#ffb3c2}
.mistake .better{color:var(--green);font-weight:700;margin-top:4px}
.mistake .cat{float:right;font-size:11px}
.vocab{display:flex;align-items:center;gap:10px;background:var(--card);border-radius:16px;padding:11px 13px;margin-bottom:8px}
.vocab .w{flex:1}
.vocab .w b{display:block}
.vocab button{font-size:20px;width:38px;height:38px;border-radius:50%;background:#ffffff10}
.vocab button.saved{background:var(--yel);color:#14112e}

/* transcript */
.chat{display:flex;flex-direction:column;gap:8px}
.msg{max-width:86%;padding:10px 13px;border-radius:18px;line-height:1.4;position:relative}
.msg.bot{background:var(--card);align-self:flex-start;border-bottom-left-radius:5px}
.msg.me{background:linear-gradient(135deg,#ff7ab6,#b56bff);align-self:flex-end;border-bottom-right-radius:5px}
.msg .de{display:none;font-size:14px;opacity:.8;margin-top:5px;border-top:1px solid #ffffff30;padding-top:5px}
.msg.show .de{display:block}
.msg .tools{display:flex;gap:4px;margin-top:6px}
.msg .tools button{font-size:13px;background:#ffffff1c;border-radius:10px;padding:3px 9px}
.msg.err{box-shadow:0 0 0 2px var(--yel)}

/* flashcards */
.fc{perspective:1000px;height:260px;margin:10px 0 18px}
.fc .in{position:relative;width:100%;height:100%;transition:transform .45s;transform-style:preserve-3d}
.fc.flip .in{transform:rotateY(180deg)}
.fc .face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:24px;background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;text-align:center;box-shadow:0 10px 30px #0006}
.fc .back{transform:rotateY(180deg);background:var(--card2)}
.fc .big{font-size:28px;font-weight:800}
.fc .ex{color:var(--mut);margin-top:12px;font-size:15px}

.empty{text-align:center;color:var(--mut);padding:40px 10px}
#toast{position:fixed;left:50%;bottom:calc(var(--sb) + 96px);transform:translateX(-50%);background:#000c;padding:10px 16px;border-radius:14px;font-size:14px;opacity:0;transition:.25s;pointer-events:none;z-index:50}
#toast.on{opacity:1}
.spin{width:44px;height:44px;border:4px solid #ffffff22;border-top-color:var(--acc);border-radius:50%;animation:sp 1s linear infinite;margin:30px auto}
@keyframes sp{to{transform:rotate(360deg)}}
.hidden{display:none!important}

/* v0.3 */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:var(--card);border:1px solid var(--line);border-radius:99px;padding:9px 14px;font-size:15px}
.chip.on{background:linear-gradient(135deg,var(--acc),#b56bff);border-color:transparent;font-weight:700}
.cols2{grid-template-columns:1fr 1fr}
.card.mini{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;padding:14px}
.card.mini span{font-size:26px}.card.mini small{color:var(--mut);font-size:12px}
.memrow{display:flex;align-items:center;gap:8px;padding:7px 0;border-bottom:1px solid var(--line)}
.memrow:last-child{border:0}.memrow span{flex:1;font-size:15px}.memrow button{color:var(--mut);font-size:14px;padding:4px 8px}
.tw{cursor:pointer;border-radius:5px;transition:background .15s}
.tw:hover,.tw:active{background:#ffffff22}
.pop{position:fixed;z-index:60;width:260px;background:#0b0920f2;border:1px solid #ffffff26;border-radius:16px;padding:12px 14px;box-shadow:0 12px 40px #000a;font-size:15px;line-height:1.35;animation:fade .15s}
.pop button{font-size:18px;width:34px;height:34px;border-radius:50%;background:#ffffff14}
.fixchip.ok{background:#4fe39a1f;border-color:#4fe39a66;color:var(--green)}
.fixchip .small{color:var(--txt);opacity:.85;margin-top:3px}
.sayright{margin-top:8px;background:var(--yel);color:#14112e;font-weight:700}
.target{font-size:24px;font-weight:800;line-height:1.5;text-align:center;margin:14px 0 6px}
.target span{transition:color .2s}
.target .ok{color:var(--green)}.target .bad{color:var(--red);text-decoration:underline wavy}.target .meh{color:var(--yel)}
.live{width:100%;max-width:560px;max-height:34vh;overflow:auto;display:flex;flex-direction:column;gap:8px;padding:4px 2px}
.live .msg{font-size:15px}
.mistake .better button{font-size:14px;background:#ffffff14;border-radius:8px;padding:2px 7px;margin-left:2px}
.call .ctrls:last-of-type{flex-wrap:wrap;gap:8px}
.call .pill{padding:6px 10px;font-size:13px}
.call .orb-wrap{min-height:0}
.call:has(.live:not(.hidden)) .orb{width:110px;height:110px}