/* Цвета берутся из темы Telegram; в обычном браузере — запасные значения. */
:root{
  --bg:var(--tg-theme-secondary-bg-color,#ECEFF2);
  --surface:var(--tg-theme-bg-color,#FFFFFF);
  --ink:var(--tg-theme-text-color,#17222B);
  --muted:var(--tg-theme-hint-color,#5B6873);
  --accent:var(--tg-theme-button-color,#1F5FAD);
  --accent-ink:var(--tg-theme-button-text-color,#FFFFFF);
  --link:var(--tg-theme-link-color,#1F5FAD);
  --line:color-mix(in srgb,var(--muted) 28%,transparent);
  --soft:color-mix(in srgb,var(--accent) 12%,transparent);
  --rule:color-mix(in srgb,var(--accent) 12%,transparent);
  --margin:rgba(194,65,45,.42);
  --again:#C2412D; --hard:#A86A12; --good:#2F7A50; --easy:var(--accent);
  --ui:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --word:Georgia,"Times New Roman",serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:var(--tg-theme-secondary-bg-color,#12171C);
  --surface:var(--tg-theme-bg-color,#1A2128);
  --ink:var(--tg-theme-text-color,#E7ECF0);
  --muted:var(--tg-theme-hint-color,#97A4AE);
  --accent:var(--tg-theme-button-color,#6FA4E8);
  --accent-ink:var(--tg-theme-button-text-color,#0D1620);
  --link:var(--tg-theme-link-color,#6FA4E8);
  --again:#E8735E; --hard:#D9A23F; --good:#5DBB87; color-scheme:dark}}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink)}
body{font-family:var(--ui);font-size:15px;line-height:1.5;-webkit-tap-highlight-color:transparent}
.wrap{max-width:680px;margin:0 auto;padding-block:16px 48px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));display:flex;flex-direction:column;gap:16px}
h1,h2{margin:0;line-height:1.2;text-wrap:balance}
h1{font-size:24px;font-weight:700}
h2{font-size:16px;font-weight:600}
p{margin:0}
.muted{color:var(--muted)}.small{font-size:13px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spread{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.panel{background:var(--surface);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:12px}
button,select,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;border-radius:10px;border:1px solid var(--line);background:var(--surface);padding:9px 14px;font-weight:500}
button:disabled{opacity:.45;cursor:default}
button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.wide{width:100%;padding:13px}
.link{border:0;background:none;padding:4px 0;color:var(--link);font-weight:500}
.danger{color:var(--again)}
input,textarea,select{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%;min-width:0}
textarea{min-height:110px;resize:vertical}
label{font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:4px;min-width:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:520px){.grid2{grid-template-columns:1fr}}
.chip{display:inline-block;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;padding:2px 7px;border-radius:5px;background:var(--soft);color:var(--accent)}
.lock{display:inline-flex;align-items:center;gap:4px;font-size:12px;color:var(--muted)}
.list{display:flex;flex-direction:column}
.item{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:12px 0;border-top:1px solid var(--line);cursor:pointer}
.item:first-child{border-top:0;padding-top:2px}
.item .name{font-weight:600;font-size:16px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.item .chev{color:var(--muted);font-size:20px}
.num{font-variant-numeric:tabular-nums}
.due{color:var(--again);font-weight:600}.new{color:var(--accent);font-weight:600}
.summary{display:flex;gap:28px;flex-wrap:wrap}
.summary b{display:block;font-size:28px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.chars{display:flex;gap:6px;flex-wrap:wrap}
.chars button{padding:4px 10px;font-family:var(--word);font-size:16px;min-width:36px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg button{border:0;border-radius:0;background:transparent;padding:6px 12px;font-size:13px}
.seg button[aria-pressed="true"]{background:var(--soft);color:var(--accent);font-weight:600}
.w{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;padding:10px 0;border-top:1px solid var(--line);align-items:center}
.w:first-child{border-top:0}
.w .t{min-width:0;overflow-wrap:anywhere}
.w .t b{font-family:var(--word);font-weight:600;font-size:16px}
.w .ex{font-size:13px;color:var(--muted);font-style:italic}
.w .acts{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.bar{height:4px;background:var(--line);border-radius:2px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);transition:width .25s}
.meter{height:6px;background:var(--line);border-radius:3px;overflow:hidden}
.meter i{display:block;height:100%;background:var(--accent)}
/* карточка: разлинованная бумажная карточка */
.flash{position:relative;background:var(--surface);border-radius:8px;min-height:260px;
  padding:52px 20px 24px 48px;box-shadow:0 10px 30px -20px rgba(20,40,60,.45);
  background-image:linear-gradient(to bottom,transparent 36px,var(--margin) 36px,var(--margin) 38px,transparent 38px),
    repeating-linear-gradient(to bottom,transparent 0 31px,var(--rule) 31px 32px);
  background-position:0 0,0 38px;background-repeat:no-repeat,repeat;
  display:flex;flex-direction:column;justify-content:center;gap:14px;cursor:pointer;user-select:none}
.flash::before{content:"";position:absolute;left:32px;top:0;bottom:0;width:1px;background:var(--margin)}
.flash .hint{position:absolute;top:9px;left:48px;right:44px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.flash .def{font-size:15px;color:var(--muted);line-height:1.45}
.flash .lbl{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:2px}
.flash .sent{font-family:var(--word);font-size:clamp(20px,5vw,26px);line-height:1.4;overflow-wrap:anywhere}
.flash .prompt{font-family:var(--word);font-size:clamp(22px,6vw,30px);font-weight:600;overflow-wrap:anywhere}
.flash .gap{display:inline-block;width:5.5em;border-bottom:2px solid var(--accent);transform:translateY(-.2em)}
.flash mark{background:var(--soft);color:var(--accent);padding:0 .15em;border-radius:3px}
.flash .back{font-family:var(--word);font-size:clamp(18px,4.6vw,22px);padding-top:12px;border-top:1px dashed var(--line);overflow-wrap:anywhere}
.speak{position:absolute;top:4px;right:6px;border:0;background:none;padding:6px;color:var(--muted)}
.grades{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.grades button{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 2px;border-width:1.5px;background:var(--surface)}
.grades small{font-size:12px;color:var(--muted);font-weight:400;font-variant-numeric:tabular-nums}
.g1{border-color:var(--again)!important;color:var(--again)}
.g2{border-color:var(--hard)!important;color:var(--hard)}
.g3{border-color:var(--good)!important;color:var(--good)}
.g4{border-color:var(--easy)!important;color:var(--easy)}
.ownres{display:flex;flex-direction:column;gap:6px;align-items:flex-start}
.verdict{font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;border:1.5px solid;border-radius:5px;padding:1px 7px}
.corr{font-family:var(--word);font-size:18px;overflow-wrap:anywhere}
.note{padding:10px 12px;border-radius:10px;background:var(--soft);font-size:14px}
.empty{text-align:center;padding:28px 12px;color:var(--muted)}
.upsell{border:1.5px solid var(--accent)}
.upsell ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:4px}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(16px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--surface);padding:10px 16px;border-radius:10px;font-size:14px;max-width:calc(100% - 32px);z-index:5}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.flash .ipa{font-family:var(--sans,system-ui);font-size:.8em;color:var(--muted);font-weight:400}
.offers{display:flex;flex-direction:column;gap:8px;margin:6px 0}
.offer{display:flex;justify-content:space-between;align-items:center;width:100%}
.topic{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline;justify-content:space-between;font-size:.9em;padding:8px 10px;border-radius:8px;background:var(--soft);margin:6px 0}
.answer{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.answer input{flex:1 1 200px;font-size:17px}
.typed{font-size:.95em;padding:8px 12px;border-radius:8px;border:1px solid var(--line)}
.typed.ok{color:var(--good);border-color:var(--good)}
.typed.typo{color:var(--hard);border-color:var(--hard)}
.typed.wrong{color:var(--again);border-color:var(--again)}
.typed b{font-weight:600}
.wk{display:inline-block;font-size:.72em;font-weight:600;color:var(--accent);background:var(--soft);border-radius:6px;padding:1px 6px;margin-right:6px;vertical-align:2px}
.prompt-en{font-family:var(--word,Georgia,serif);font-size:1.02em;line-height:1.45;padding:10px 12px;border-left:3px solid var(--accent);background:var(--soft);border-radius:6px}
.essres{display:flex;flex-direction:column;gap:3px;margin-top:4px}
.eu{display:flex;gap:6px;font-size:.92em;color:var(--muted)}
.eu b{color:var(--ink);font-weight:500}
.eu.yes{color:var(--good)} .eu.yes b{font-weight:700}
.goal{display:flex;flex-direction:column;gap:6px}
.goal .bar{height:8px;border-radius:4px;background:var(--soft);overflow:hidden}
.goal .bar i{display:block;height:100%;background:var(--accent);border-radius:4px;transition:width .3s}
.reading p{margin:0;font-family:var(--word);font-size:18px;line-height:1.6}
.reading .rw{display:inline;border:0;padding:0 .1em;margin:0;font:inherit;background:var(--soft);color:var(--accent);border-radius:3px;cursor:pointer;text-align:left}
.reading .rw.on{background:var(--accent);color:var(--surface)}
.wordcard{position:sticky;bottom:12px;box-shadow:0 6px 24px rgba(0,0,0,.35);border:1px solid var(--line)}
.wordcard .phrase{font-family:var(--word);font-size:20px}
.fold{display:flex;align-items:center;gap:10px;width:100%;background:none;border:0;padding:0;color:inherit;text-align:left;cursor:pointer}
.fold h2{flex:none}.fold .small{flex:1;min-width:0}
.fold .chev{color:var(--muted);font-size:20px;line-height:1;width:1em;text-align:center}
.sub{font-size:13px;font-weight:600;color:var(--ink)}
.settings{gap:0}
.settings h2{margin-bottom:4px}
.opt{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:14px 0;border-top:1px solid var(--line)}
.opt:first-of-type{border-top:0}
.opt .seg button{padding:8px 16px;font-size:14px}
.opt select{width:auto;min-width:180px}
.newdeck{display:flex;flex-direction:column;gap:8px;padding-top:14px;border-top:1px solid var(--line)}
.nd-row{display:flex;gap:8px}
.nd-row select{flex:1}
.nd-row button{flex:none}