/* ---------- Темы ---------- */
:root {
  --bg: #f4f5f8; --panel: #ffffff; --panel2: #f0f2f7; --fg: #1b2130; --muted: #5d6779; --dim: #aab2c0;
  --line: #e1e5ed; --accent: #3b6cff; --accent-fg: #fff; --accent-soft: rgba(59,108,255,.14);
  --ok: #17996a; --warn: #d28a00; --bad: #e0443e;
  --keybg: #ffffff; --keyline: #cfd5e0; --ks: 78%; --kl: 90%;
  --shadow: 0 1px 2px rgba(20,30,60,.06), 0 6px 20px rgba(20,30,60,.05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #11141b; --panel: #1a1f2a; --panel2: #222836; --fg: #e8ecf4; --muted: #9aa5ba; --dim: #4f596d;
    --line: #2b3242; --accent: #6b8cff; --accent-fg: #0b1020; --accent-soft: rgba(107,140,255,.18);
    --ok: #4cd08b; --warn: #f0b429; --bad: #ff6b6b;
    --keybg: #232a38; --keyline: #323b4e; --ks: 36%; --kl: 24%;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25);
  }
}
:root[data-theme="dark"] {
  --bg: #11141b; --panel: #1a1f2a; --panel2: #222836; --fg: #e8ecf4; --muted: #9aa5ba; --dim: #4f596d;
  --line: #2b3242; --accent: #6b8cff; --accent-fg: #0b1020; --accent-soft: rgba(107,140,255,.18);
  --ok: #4cd08b; --warn: #f0b429; --bad: #ff6b6b;
  --keybg: #232a38; --keyline: #323b4e; --ks: 36%; --kl: 24%;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25);
}

* { box-sizing: border-box; }
html { color-scheme: light dark; }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3 { margin: 0; line-height: 1.2; }
h1 { font-size: 26px; }
h2 { font-size: 18px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
kbd {
  font: 600 .9em ui-monospace, "Cascadia Mono", Consolas, monospace; background: var(--panel2);
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 0 .4em;
}

/* ---------- Шапка и навигация ---------- */
.top {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px max(16px, calc((100vw - 1120px) / 2)); background: color-mix(in srgb, var(--panel) 92%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--accent); }
.brand span { color: var(--fg); }
#nav { display: flex; gap: 4px; flex-wrap: wrap; }
#nav button {
  border: 0; background: none; padding: 8px 14px; border-radius: 10px; color: var(--muted); font-weight: 550;
}
#nav button:hover { background: var(--panel2); color: var(--fg); }
#nav button.on { background: var(--accent-soft); color: var(--accent); }

main { max-width: 1120px; margin: 0 auto; padding: 24px 16px 60px; }
.view { display: none; }
.view.on { display: block; animation: fade .18s ease-out; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ---------- Общие элементы ---------- */
.btn {
  border: 1px solid var(--line); background: var(--panel); border-radius: 10px; padding: 9px 16px; font-weight: 600;
  transition: background .12s, transform .06s, border-color .12s;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.ghost { background: none; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { background: var(--panel2); color: var(--fg); }
.btn.danger { color: var(--bad); }
.btn:focus-visible, .card:focus-visible, .seg button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; box-shadow: var(--shadow); }
.panel > h2 + * { margin-top: 12px; }
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.page-head p { margin: 6px 0 0; }

.seg { display: inline-flex; background: var(--panel2); border-radius: 11px; padding: 3px; gap: 2px; }
.seg button { border: 0; background: none; padding: 6px 14px; border-radius: 9px; font-weight: 600; color: var(--muted); }
.seg button.on { background: var(--panel); color: var(--fg); box-shadow: 0 1px 3px rgba(0,0,0,.15); }

.tag { display: inline-block; padding: 1px 9px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 700; }
.stars { letter-spacing: 1px; color: var(--dim); white-space: nowrap; }
.stars .f { color: #f5b301; }

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--fg); color: var(--bg); padding: 10px 18px; border-radius: 12px; font-weight: 550; transition: .2s; z-index: 50;
}
#toast.on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Уроки ---------- */
.tip { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 20px; padding: 12px 16px; background: var(--accent-soft); border-radius: 12px; font-size: 14px; }
.progress-line { height: 8px; border-radius: 99px; background: var(--panel2); overflow: hidden; }
.progress-line > i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--ok)); border-radius: 99px; transition: width .3s; }
.cont { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
.cont .grow { flex: 1 1 260px; }
.sec { margin-top: 28px; }
.sec-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.sec-head .letter {
  display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: var(--accent-fg);
  font-weight: 800; font-size: 14px;
}
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.card {
  text-align: left; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px;
  display: flex; flex-direction: column; gap: 6px; min-height: 112px; transition: border-color .12s, transform .1s, box-shadow .12s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.card.next { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.card .num { font-size: 12px; color: var(--muted); font-weight: 650; display: flex; justify-content: space-between; }
.card .ttl { font-weight: 700; font-size: 16px; }
.card .dsc { font-size: 13px; color: var(--muted); flex: 1; }
.card .best { font-size: 12px; color: var(--muted); min-height: 16px; }

/* ---------- Практика / настройки ---------- */
.form { display: grid; gap: 18px; max-width: 640px; }
.field > label, .field > .lbl { display: block; font-weight: 650; margin-bottom: 6px; }
select, textarea {
  width: 100%; font: inherit; color: var(--fg); background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 9px 12px;
}
textarea { min-height: 120px; resize: vertical; }
.checks { display: flex; gap: 8px 20px; flex-wrap: wrap; }
.check { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); }
.setting { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.setting:last-child { border-bottom: 0; }
.setting b { display: block; }

/* ---------- Экран тренировки ---------- */
.train-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.train-title { display: flex; align-items: center; gap: 10px; font-size: 17px; }
.chips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 12px; }
.chip { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 8px 14px; }
.chip small { display: block; color: var(--muted); font-size: 12px; }
.chip b { font-size: 22px; font-variant-numeric: tabular-nums; }
.chip b i { font-style: normal; font-size: 13px; color: var(--muted); font-weight: 500; margin-left: 3px; }
.bar { height: 5px; background: var(--panel2); border-radius: 99px; overflow: hidden; margin-bottom: 14px; }
.bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .12s; }
.warn {
  display: none; margin-bottom: 12px; padding: 10px 14px; border-radius: 10px; font-weight: 550;
  background: color-mix(in srgb, var(--warn) 18%, transparent); border: 1px solid var(--warn);
}
.warn.on { display: block; }

.textbox {
  --tfs: 28px; position: relative; overflow: hidden; scroll-behavior: smooth; background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 0 22px; font: 500 var(--tfs)/1.9 ui-monospace, "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  height: calc(var(--tfs) * 1.9 * 3 + 2px); box-shadow: var(--shadow); cursor: text; user-select: none;
}
.textbox.fs-s { --tfs: 22px; } .textbox.fs-l { --tfs: 34px; }
.textbox .w { display: inline-block; white-space: nowrap; }
.ch { color: var(--dim); border-radius: 4px; transition: color .1s; }
.ch.sp { display: inline-block; width: .62em; }
.ch.ok { color: var(--fg); opacity: .5; }
.ch.fix { color: var(--warn); }
.ch.cur { background: var(--accent-soft); color: var(--fg); box-shadow: 0 2px 0 var(--accent); }
.ch.cur.bad { animation: shake .22s; background: color-mix(in srgb, var(--bad) 30%, transparent); box-shadow: 0 2px 0 var(--bad); }
@keyframes shake { 25% { transform: translateX(-3px); } 75% { transform: translateX(3px); } }
.textbox .go {
  position: absolute; right: 12px; bottom: 6px; font: 500 12px system-ui, sans-serif; color: var(--muted);
  background: var(--panel); padding: 1px 8px; border-radius: 6px; border: 1px solid var(--line);
}

.hint { display: flex; align-items: center; gap: 12px; margin: 14px 2px; color: var(--muted); min-height: 36px; flex-wrap: wrap; }
.hint .big {
  display: inline-grid; place-items: center; min-width: 38px; height: 36px; padding: 0 10px; border-radius: 9px; background: var(--accent);
  color: var(--accent-fg); font: 700 20px ui-monospace, "Cascadia Mono", Consolas, monospace;
}
.kbhost { margin-top: 6px; overflow-x: auto; padding-bottom: 6px; }
.foot-hint { text-align: center; margin-top: 10px; }

/* ---------- Виртуальная клавиатура ---------- */
.kb { --u: clamp(13px, calc((100vw - 64px) / 21), 46px); --gapc: calc(var(--u) * 1.5);
  display: flex; justify-content: center; gap: var(--gapc); user-select: none; width: max-content; margin: 0 auto; }
.half { display: flex; flex-direction: column; gap: 4px; }
.krow { display: flex; gap: 4px; height: var(--u); }
.key, .spacer { width: calc(var(--w, 1) * (var(--u) + 4px) - 4px); flex: none; }
.spacer { height: 1px; }
.key {
  position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; line-height: 1.05;
  background: var(--keybg); border: 1px solid var(--keyline); border-bottom-width: 3px; border-radius: calc(var(--u) * .2);
  font: 600 calc(var(--u) * .4)/1 system-ui, sans-serif; color: var(--fg); transition: background .08s, transform .08s, box-shadow .08s;
}
.key .s { font-size: .68em; color: var(--muted); }
.key.mod { color: var(--dim); font-size: calc(var(--u) * .27); font-weight: 500; }
.fc .key[data-f] { background: hsl(var(--h) var(--ks) var(--kl)); border-color: hsl(var(--h) calc(var(--ks) * .8) calc(var(--kl) - 12%)); }
.key[data-f="lp"] { --h: 350; } .key[data-f="lr"] { --h: 24; } .key[data-f="lm"] { --h: 48; } .key[data-f="li"] { --h: 140; }
.key[data-f="ri"] { --h: 190; } .key[data-f="rm"] { --h: 222; } .key[data-f="rr"] { --h: 268; } .key[data-f="rp"] { --h: 318; }
.key[data-f="th"] { --h: 215; }
.key.bump::after { content: ""; position: absolute; bottom: 4px; width: 38%; height: 2px; border-radius: 2px; background: currentColor; opacity: .55; }
.krow.th { height: calc(var(--u) * .9); }
.half.left .krow.th { justify-content: flex-end; } .half.right .krow.th { justify-content: flex-start; }
.ortho .spacer { display: none; }
.ortho .key.mod:not(.space) { --w: 1 !important; }
.ortho .key[data-code="Backslash"] { --w: 1 !important; }

.key.next, .fc .key.next {
  background: hsl(var(--h, 220) 92% 56%); border-color: hsl(var(--h, 220) 92% 40%); color: #fff; transform: translateY(-2px);
  box-shadow: 0 0 0 3px hsl(var(--h, 220) 92% 56% / .35), 0 4px 14px hsl(var(--h, 220) 92% 40% / .5); z-index: 1;
}
.key.next .s { color: #fff; opacity: .85; }
.key.mod.next { --h: 220; }
.key.hit { background: color-mix(in srgb, var(--ok) 55%, var(--keybg)) !important; transform: translateY(1px); }
.key.miss { background: color-mix(in srgb, var(--bad) 65%, var(--keybg)) !important; transform: translateY(1px); }
.kb.heat .key:not(.mod) { background: color-mix(in oklab, var(--hc, var(--bad)) calc(var(--heat, 0) * 100%), var(--keybg)); border-color: var(--keyline); }
.kb.heat .key.nodata { opacity: .55; }
.legend { display: flex; align-items: center; gap: 8px; justify-content: center; margin-top: 10px; font-size: 12px; color: var(--muted); }
.legend i { display: block; width: 120px; height: 8px; border-radius: 99px; background: linear-gradient(90deg, var(--keybg), var(--hc, var(--bad))); border: 1px solid var(--keyline); }
.finger-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; justify-content: center; margin-top: 10px; font-size: 12px; color: var(--muted); }
.finger-legend span::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; background: hsl(var(--h) 70% 55%); vertical-align: -1px; }

/* ---------- Результат ---------- */
.res-head { text-align: center; margin: 6px 0 22px; }
.res-head .stars { font-size: 38px; margin: 6px 0; }
.res-head .badge { display: inline-block; margin-top: 6px; padding: 3px 12px; border-radius: 99px; background: #f5b301; color: #2a2000; font-weight: 800; font-size: 13px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; box-shadow: var(--shadow); }
.stat small { display: block; color: var(--muted); font-size: 12.5px; }
.stat b { font-size: 32px; font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat b i { font-style: normal; font-size: 14px; font-weight: 500; color: var(--muted); margin-left: 4px; }
.stat .sub { font-size: 12.5px; color: var(--muted); }
.stat.good b { color: var(--ok); } .stat.mid b { color: var(--warn); } .stat.low b { color: var(--bad); }
.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; margin-top: 12px; }
.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.list li { display: flex; align-items: center; gap: 10px; }
.list li .val { margin-left: auto; color: var(--muted); font-variant-numeric: tabular-nums; }
.list kbd { min-width: 28px; text-align: center; }
.crit { display: grid; gap: 4px; font-size: 13.5px; }
.crit .y { color: var(--ok); } .crit .n { color: var(--muted); }
.actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }
.chart { width: 100%; height: auto; display: block; }
.chart text { fill: var(--muted); font: 11px system-ui, sans-serif; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .ln { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.chart .ln.b { stroke: var(--ok); }
.chart .ar { fill: var(--accent); opacity: .12; } .chart .ar.b { fill: var(--ok); }
.chart circle { fill: var(--panel); stroke: var(--accent); stroke-width: 2; } .chart circle.b { stroke: var(--ok); }
.empty { text-align: center; color: var(--muted); padding: 26px 8px; }

/* ---------- Статистика ---------- */
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); font-size: 14px; }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; }
td.r, th.r { text-align: right; }
.tbl { overflow-x: auto; }
.stack { display: grid; gap: 14px; }

@media (max-width: 720px) {
  .chips { grid-template-columns: repeat(2, 1fr); }
  .textbox { padding: 0 14px; }
  #nav button { padding: 7px 10px; }
  .brand span { display: none; }
  .textbox .go { display: none; }
}

/* ---------- Клавиатура пользователя (Vial) и слои ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.kb.vial { --u: clamp(24px, calc((100vw - 64px) / 15), 56px); --gapc: calc(var(--u) * 2); }
.kb.vial .key { font-size: calc(var(--u) * .38); }
.kb.vial .key .s { max-width: 94%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .55em; }
.key.none { opacity: .3; }
.key.trns { color: var(--dim); }
.key.mod.lay { color: var(--accent); font-weight: 700; }
.key.act, .fc .key.act {
  background: hsl(40 96% 56%) !important; border-color: hsl(40 90% 36%) !important; color: #1c1400 !important; transform: translateY(-2px); z-index: 1;
  box-shadow: 0 0 0 3px hsl(40 96% 56% / .35), 0 4px 14px hsl(40 90% 36% / .5); animation: pulse 1.1s ease-in-out infinite;
}
.key.act .s { color: #1c1400 !important; opacity: .85; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px hsl(40 96% 56% / .2), 0 4px 14px hsl(40 90% 36% / .5); } }

.layerbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 4px 2px 0; }
.lchip { border: 1px solid var(--line); background: var(--panel); border-radius: 99px; padding: 3px 12px; font-size: 13px; font-weight: 600; color: var(--muted); }
.lchip:hover { border-color: var(--accent); }
.lchip.cur { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.lchip.need:not(.cur) { border: 2px solid hsl(40 96% 50%); color: var(--fg); }
.lchip.need.cur { box-shadow: 0 0 0 3px var(--accent-soft); }

.steps { display: flex; gap: 8px; flex-wrap: wrap; }
.step { padding: 3px 12px; border-radius: 99px; background: var(--panel2); color: var(--fg); font-size: 14px; font-weight: 550; }
.step.act { background: hsl(40 96% 56% / .25); border: 1px solid hsl(40 96% 50%); }
.step.key { background: var(--accent-soft); color: var(--accent); }

.drop {
  display: flex; flex-direction: column; align-items: center; gap: 6px; width: 100%; padding: 42px 20px; text-align: center; color: var(--fg);
  background: var(--panel); border: 2px dashed var(--keyline); border-radius: 16px; font: inherit; cursor: pointer; transition: .15s;
}
.drop b { font-size: 17px; }
.drop:hover, .drop.over { border-color: var(--accent); background: var(--accent-soft); }
.names { display: flex; gap: 10px; flex-wrap: wrap; }
.nm { display: flex; flex-direction: column; gap: 2px; }
.nm input { font: inherit; color: var(--fg); background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 5px 9px; width: 150px; }
.card.locked { opacity: .55; }
.sec-head .btn { padding: 3px 12px; font-size: 13px; }

/* ---------- Аккаунт ---------- */
.authbox { max-width: 520px; display: grid; gap: 16px; }
.authbox .form { max-width: none; }
.text {
  width: 100%; font: inherit; color: var(--fg); background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
}
.text:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.msg { padding: 10px 14px; border-radius: 10px; font-weight: 550; border: 1px solid transparent; }
.msg.ok { background: color-mix(in srgb, var(--ok) 16%, transparent); border-color: var(--ok); }
.msg.err { background: color-mix(in srgb, var(--bad) 16%, transparent); border-color: var(--bad); }
.linkbtn { border: 0; background: none; padding: 0; color: var(--accent); font: inherit; font-weight: 600; cursor: pointer; text-decoration: underline; }
.linkbtn:hover { filter: brightness(1.15); }
.danger-zone { border-color: var(--bad); }