:root{--bg:#0f1020;--card:#1b1d36;--card2:#25284a;--ink:#eef0ff;--mut:#9aa0c8;--pri:#6366f1;--cy:#22d3ee;--ok:#22c55e;--bad:#f87171;--me:#4f46e5;--warn:#fde68a}
*{box-sizing:border-box}
html,body{height:100%;margin:0;overscroll-behavior:none}
html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
body{background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,sans-serif;padding-top:env(safe-area-inset-top)}
button,select,input{font:inherit;color:var(--ink)}
button{background:var(--card);border:0;border-radius:12px;padding:8px 12px;cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none}
.hidden{display:none!important}
.screen{height:100vh;height:100dvh;display:flex;flex-direction:column}
.scroll{flex:1;min-height:0;overflow-y:auto}

header{display:flex;justify-content:space-between;align-items:center;padding:10px 16px}
.brand{font-weight:700;font-size:20px}
.hbtns{display:flex;align-items:center;gap:6px}
.hbtns button{font-size:20px;background:none;padding:4px}
.pill{font-size:13px;font-weight:600;background:var(--card);padding:3px 9px;border-radius:12px}

/* ---------- home ---------- */
#homeBody{padding:4px 16px 24px;display:flex;flex-direction:column;gap:14px}
.card{background:var(--card);border-radius:18px;padding:16px}
.hero{background:linear-gradient(135deg,#4f46e5,#0891b2);position:relative}
.hero h2{margin:0 0 2px;font-size:22px}
.hero .sub{opacity:.85;font-size:14px}
.hero .lbl{font-size:12px;letter-spacing:.08em;text-transform:uppercase;opacity:.8;margin-bottom:6px}
.bar2{height:8px;background:rgba(255,255,255,.25);border-radius:6px;margin:12px 0 4px;overflow:hidden}
.bar2 i{display:block;height:100%;background:#fff;border-radius:6px}
.big{width:100%;padding:14px;font-size:17px;font-weight:700;border-radius:14px;background:#fff;color:#312e81;margin-top:12px}
.lesson h3{margin:0 0 4px}
.lesson p{margin:2px 0;color:var(--mut);font-size:14px}
.lesson b{color:var(--ink)}
.h4{font-weight:700;margin:6px 0 2px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips button{background:var(--card2);padding:8px 12px;border-radius:20px;font-size:14px}
.road{display:flex;flex-direction:column;gap:6px;font-size:14px}
.road div{display:flex;justify-content:space-between;padding:6px 10px;border-radius:10px;background:var(--card2)}
.road .cur{outline:2px solid var(--cy)}
.road .done{opacity:.55}
.road .lock{opacity:.4}

/* ---------- call ---------- */
.calltop{display:flex;align-items:center;justify-content:space-between;padding:10px 16px}
.endbtn{background:#7f1d1d!important;font-weight:600}
#robot{display:flex;align-items:center;gap:14px}
#robot .who{display:flex;flex-direction:column;line-height:1.25}
#robot .who b{font-size:17px}
#robot .who span{font-size:13px;color:var(--mut)}
#rstate{font-size:13px;font-style:normal;color:var(--cy);margin-top:2px}
.orb{width:64px;height:64px;flex:none;border-radius:50%;background:linear-gradient(135deg,#6366f1,#22d3ee);display:flex;align-items:center;justify-content:center;gap:4px}
.orb i{display:block;width:5px;height:10px;border-radius:3px;background:#fff;opacity:.9}
#robot.speaking .orb i{animation:wave .7s ease-in-out infinite}
#robot.speaking .orb i:nth-child(2){animation-delay:.12s}
#robot.speaking .orb i:nth-child(3){animation-delay:.24s}
#robot.speaking .orb i:nth-child(4){animation-delay:.36s}
#robot.speaking .orb i:nth-child(5){animation-delay:.48s}
@keyframes wave{0%,100%{transform:scaleY(.6)}50%{transform:scaleY(3.2)}}
#robot.listening .orb{background:linear-gradient(135deg,#ef4444,#f97316);animation:ring 1.2s infinite}
@keyframes ring{0%{box-shadow:0 0 0 0 rgba(239,68,68,.55)}100%{box-shadow:0 0 0 16px rgba(239,68,68,0)}}
#robot.thinking .orb i{animation:dot 1s ease-in-out infinite}
#robot.thinking .orb i:nth-child(2){animation-delay:.15s}
#robot.thinking .orb i:nth-child(3){animation-delay:.3s}
#robot.thinking .orb i:nth-child(4){animation-delay:.45s}
#robot.thinking .orb i:nth-child(5){animation-delay:.6s}
@keyframes dot{0%,100%{transform:scale(.6);opacity:.5}50%{transform:scale(1.3);opacity:1}}

#chat{padding:8px 16px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:88%;padding:10px 14px;border-radius:16px;white-space:pre-wrap;word-wrap:break-word}
.ai{background:var(--card);align-self:flex-start;border-bottom-left-radius:4px}
.me{background:var(--me);align-self:flex-end;border-bottom-right-radius:4px}
.fix{align-self:flex-end;max-width:88%;background:#14261c;border:1px solid #1f5a36;border-radius:14px;padding:10px 12px;font-size:14px}
.fix.perfect{padding:4px 10px;font-size:13px}
.fix .good{color:var(--ok);font-weight:600}
.fix .w{color:var(--bad);text-decoration:line-through}
.fix .r{color:var(--ok);font-weight:600}
.fix .why{color:var(--mut);display:block;margin:2px 0 6px}
.fix .tip{margin-top:6px;color:var(--warn)}
.sys{align-self:center;color:var(--mut);font-size:13px;text-align:center}
footer{padding:8px 16px calc(12px + env(safe-area-inset-bottom))}
.row{display:flex;gap:8px}
.row input{flex:1;min-width:0;background:var(--card);border:0;border-radius:24px;padding:11px 16px}
.row button{border-radius:50%;width:44px;height:44px;padding:0;font-size:18px}
.micwrap{display:flex;flex-direction:column;align-items:center;margin-top:10px}
.micwrap small{color:var(--mut);margin-top:4px}
#mic{width:68px;height:68px;border-radius:50%;padding:0;font-size:28px;background:linear-gradient(135deg,#6366f1,#22d3ee);box-shadow:0 6px 20px rgba(99,102,241,.45)}
#mic.off{background:#3b3f66;box-shadow:none;opacity:.7}

/* ---------- report ---------- */
#reportBody{padding:4px 16px 24px;display:flex;flex-direction:column;gap:14px}
.score{font-size:54px;font-weight:800;line-height:1}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}
.grid3 div{background:rgba(255,255,255,.15);border-radius:12px;padding:8px;text-align:center;font-size:12px}
.grid3 b{display:block;font-size:20px}
.list{margin:6px 0 0;padding-left:18px;font-size:14px;color:var(--mut)}
.list li{margin:3px 0}
.good{color:var(--ok)}.badc{color:var(--bad)}

/* ---------- dialogs ---------- */
dialog{background:var(--card);color:var(--ink);border:0;border-radius:18px;padding:18px;width:min(92vw,420px);max-height:85vh}
dialog::backdrop{background:rgba(0,0,0,.6)}
dialog h3{margin:0 0 10px}
dialog label{display:block;margin:10px 0;font-size:14px;color:var(--mut)}
dialog input:not([type=checkbox]),dialog select{display:block;width:100%;margin-top:4px;background:var(--bg);border:0;border-radius:10px;padding:10px}
dialog .chk{display:flex;gap:8px;align-items:center;color:var(--ink)}
dialog small{color:var(--mut)}
.dbtns{display:flex;gap:8px;margin-top:14px}
.dbtns button{flex:1}
.primary{background:var(--pri)!important}
.danger{width:100%;margin-top:10px;background:#3b1d1d!important;color:#fca5a5}
.tabs{display:flex;gap:6px;margin-bottom:10px}
.tabs button{flex:1;padding:6px;background:var(--bg)}
.tabs .on{background:var(--pri)}
#nbBody{max-height:50vh;overflow-y:auto;font-size:14px}
#nbBody .item{padding:8px 0;border-bottom:1px solid var(--bg)}

.msg,.fix{user-select:text;-webkit-user-select:text}
@media (min-width:700px){.screen{max-width:520px;margin:0 auto}}

/* ---------- progress, corrections, grammar card ---------- */
#progWrap{padding:0 16px}
.pbar{height:8px;background:var(--card);border-radius:6px;overflow:hidden}
.pbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#6366f1,#22d3ee);border-radius:6px;transition:width .5s}
.pinfo{display:flex;justify-content:space-between;align-items:center;padding:6px 16px 2px;font-size:13px;color:var(--mut);position:relative}
.pinfo #cnt{color:var(--ink);font-weight:600}
.pop{position:absolute;right:16px;top:-6px;color:#fbbf24;font-weight:700;animation:popup 1.2s ease-out forwards;pointer-events:none}
@keyframes popup{0%{opacity:0;transform:translateY(8px) scale(.8)}20%{opacity:1}100%{opacity:0;transform:translateY(-26px) scale(1.2)}}
mark.bad{background:rgba(248,113,113,.28);color:#fecaca;border-radius:4px;padding:0 3px;text-decoration:line-through;text-decoration-color:#f87171}
.fix .fixed{font-size:16px;font-weight:600;margin:2px 0 6px;color:#eafff1}
.fix .why{color:#cfd3f3;margin:6px 0}
.fbtns{display:flex;gap:8px;margin-top:8px}
.fbtns button{flex:1;background:#1d3b2b;color:#bff0d2;font-size:13px;padding:8px}
.gcard{align-self:stretch;background:#1e2145;border:1px solid #3a3f86;border-radius:16px;padding:12px 14px;font-size:14px}
.gcard .grule{margin:4px 0}
.gcard .list{color:#dfe2ff}
.gcard .why{margin-top:6px}
.install{margin:0 16px 10px;background:linear-gradient(135deg,#6366f1,#22d3ee)!important;font-weight:700;padding:12px}

/* ---------- legal links + notices ---------- */
.legal{text-align:center;font-size:12px;color:var(--mut);padding:8px 0 4px;line-height:1.8}
.legal a{color:var(--mut)}
.notice{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom));transform:translate(-50%,140%);max-width:min(92vw,440px);background:#fff;color:#1e1b4b;font-weight:600;font-size:15px;padding:12px 16px;border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.35);transition:transform .25s;z-index:50;text-align:center}
.notice.on{transform:translate(-50%,0)}
@media (prefers-reduced-motion:reduce){.notice{transition:none}}

/* ---------- sign-in + plan ---------- */
.login .sub{font-size:14px;color:var(--mut);margin:4px 0 10px}
.login input{display:block;width:100%;background:var(--bg);border:1px solid var(--card2);border-radius:12px;padding:13px 14px;font-size:17px}
.login #otpCode{letter-spacing:.3em;text-align:center;font-weight:700}
.login .big{background:var(--pri);color:#fff}
.big:disabled{opacity:.6}
.link{background:none!important;color:var(--cy);padding:8px 0;font-size:14px;text-decoration:underline}
.login .link{display:block;margin:8px auto 0}
.err{color:var(--bad);font-size:14px;min-height:1em;margin-top:6px}
.plan{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid #3a3f86;padding:12px 14px}
.plan .sub{font-size:13px;color:var(--mut)}
.plan button{background:var(--pri);font-weight:700;flex:none}
.plan-over .sub{margin-top:4px}
/* ---------- first-time questions ---------- */
.obbar{height:6px;background:var(--card);border-radius:4px;overflow:hidden;margin-top:4px}
.obbar i{display:block;height:100%;background:linear-gradient(90deg,#6366f1,#22d3ee);transition:width .3s}
.ob h2{margin:6px 0 4px;font-size:22px;line-height:1.3}
.ob .sub{color:var(--mut);font-size:14px;margin-bottom:12px}
.ob input{display:block;width:100%;background:var(--bg);border:1px solid var(--card2);border-radius:12px;padding:13px 14px;font-size:17px;margin-top:8px}
.ob .big{background:var(--pri);color:#fff}
.obopts{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.obopts button{text-align:left;padding:13px 14px;font-size:16px;background:var(--card2);border:1px solid transparent;border-radius:12px}
.obopts button.on{border-color:var(--cy);background:#1e3a5f}
.obopts .dunno{color:var(--mut);background:transparent;border:1px dashed var(--card2)}
.obback{padding:0 0 4px!important;font-size:13px}
.lbl2{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--cy);margin-bottom:6px}
.qq{font-size:24px!important;margin:10px 0!important}
.plan-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;font-size:15px}
.acct{background:var(--bg);border-radius:12px;padding:10px 12px;font-size:14px;margin-bottom:6px}
.acct a{color:var(--cy)}