/* Тема берётся из Telegram (--tg-theme-*), запасные значения — для обычного браузера. */
:root {
  --bg: var(--tg-theme-bg-color, #faf7f2);
  --surface: var(--tg-theme-secondary-bg-color, #f0ebe2);
  --text: var(--tg-theme-text-color, #201b17);
  --hint: var(--tg-theme-hint-color, #8b8278);
  --accent: #cf3f31;
  --accent-soft: color-mix(in srgb, var(--accent) 14%, transparent);
  --good: #2a9d6a;
  --good-soft: color-mix(in srgb, var(--good) 16%, transparent);
  --bad: #d64545;
  --bad-soft: color-mix(in srgb, var(--bad) 14%, transparent);
  --line: color-mix(in srgb, var(--text) 10%, transparent);
  --shadow: 0 10px 30px -12px color-mix(in srgb, var(--text) 35%, transparent);
  --t1: #e5484d;
  --t2: #2f9e5b;
  --t3: #3b82f6;
  --t4: #a855f7;
  --t0: var(--hint);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;
  --radius: 22px;
  color-scheme: light dark;
}

:root[data-theme="dark"] {
    --bg: var(--tg-theme-bg-color, #17130f);
    --surface: var(--tg-theme-secondary-bg-color, #221d18);
    --text: var(--tg-theme-text-color, #f3ece4);
    --hint: var(--tg-theme-hint-color, #9b9186);
    --accent: #ee6a5a;
    --t1: #ff6b70;
    --t2: #48c479;
    --t3: #6aa3ff;
    --t4: #c084fc;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: var(--tg-theme-bg-color, #17130f);
    --surface: var(--tg-theme-secondary-bg-color, #221d18);
    --text: var(--tg-theme-text-color, #f3ece4);
    --hint: var(--tg-theme-hint-color, #9b9186);
    --accent: #ee6a5a;
    --t1: #ff6b70;
    --t2: #48c479;
    --t3: #6aa3ff;
    --t4: #c084fc;
  }
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

.app {
  max-width: 520px;
  margin: 0 auto;
  min-height: 100dvh;
  padding: max(16px, env(safe-area-inset-top)) 16px max(20px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
}

.t0 { color: var(--t0); }
.t1 { color: var(--t1); }
.t2 { color: var(--t2); }
.t3 { color: var(--t3); }
.t4 { color: var(--t4); }

/* ---------- главная ---------- */

.hero {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 2px 22px;
}

.seal {
  flex: none;
  width: 58px;
  height: 58px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 88%, #fff), var(--accent));
  color: #fff;
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 700;
  transform: rotate(-4deg);
  box-shadow: 0 8px 18px -8px var(--accent);
}

.hero h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.hero p {
  margin: 4px 0 0;
  color: var(--hint);
  font-size: 14px;
}

.decks {
  display: grid;
  gap: 12px;
}

.deck {
  position: relative;
  width: 100%;
  text-align: left;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  transition: transform 0.15s ease;
  animation: rise 0.45s both;
}

.deck:active {
  transform: scale(0.985);
}

.deck-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.deck-name {
  font-size: 18px;
  font-weight: 650;
  line-height: 1.25;
}

.deck-meta {
  margin-top: 4px;
  color: var(--hint);
  font-size: 13.5px;
}

.deck-glyph {
  font-family: var(--serif);
  font-size: 34px;
  line-height: 1;
  color: var(--accent);
  opacity: 0.9;
}

.bar {
  height: 7px;
  border-radius: 99px;
  background: var(--line);
  overflow: hidden;
  margin-top: 14px;
}

.bar > i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 60%, #ffb347));
  transition: width 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.deck-code {
  position: absolute;
  right: 12px;
  bottom: 30px;
  display: none;
}

.link {
  color: var(--accent);
  font-size: 13.5px;
  font-weight: 600;
  padding: 10px 2px 0;
}

.note {
  margin-top: auto;
  padding-top: 26px;
  color: var(--hint);
  font-size: 12.5px;
  line-height: 1.45;
  text-align: center;
}

/* ---------- кнопки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 18px;
  font-weight: 650;
  font-size: 16.5px;
  transition: transform 0.12s ease, opacity 0.2s;
  width: 100%;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 22px -12px var(--accent);
}

.btn.ghost {
  background: var(--surface);
}

.btn.good {
  background: var(--good-soft);
  color: var(--good);
}

.btn.bad {
  background: var(--bad-soft);
  color: var(--bad);
}

/* ---------- окно выбора (sheet) ---------- */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(0, 0, 0, 0.42);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  animation: fade 0.2s both;
}

.overlay.closing {
  animation: fade 0.18s reverse both;
}

.sheet {
  width: 100%;
  max-width: 520px;
  max-height: 92dvh;
  overflow-y: auto;
  background: var(--bg);
  border-radius: 28px 28px 0 0;
  padding: 10px 18px max(20px, env(safe-area-inset-bottom));
  animation: sheet-up 0.32s cubic-bezier(0.2, 0.9, 0.2, 1) both;
}

.overlay.closing .sheet {
  animation: sheet-up 0.18s reverse both;
}

.grab {
  width: 42px;
  height: 5px;
  border-radius: 9px;
  background: var(--line);
  margin: 0 auto 14px;
}

.sheet h2 {
  margin: 0 0 4px;
  font-size: 21px;
}

.sheet .sub {
  margin: 0 0 16px;
  color: var(--hint);
  font-size: 14px;
}

.modes {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.mode {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 11px 14px 11px 11px;
  border-radius: 18px;
  background: var(--surface);
  border: 2px solid transparent;
  transition: border-color 0.15s, background 0.15s;
}

.mode.sel {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.mode .g {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--bg);
  font-family: var(--serif);
  font-size: 24px;
  color: var(--accent);
}

.mode b {
  display: block;
  font-size: 16px;
}

.mode span {
  color: var(--hint);
  font-size: 13.5px;
}

.seg {
  display: flex;
  background: var(--surface);
  border-radius: 16px;
  padding: 4px;
  margin-bottom: 18px;
}

.seg button {
  flex: 1;
  padding: 10px 6px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  color: var(--hint);
  transition: background 0.15s, color 0.15s;
}

.seg button.sel {
  background: var(--bg);
  color: var(--text);
  box-shadow: 0 2px 8px -3px color-mix(in srgb, var(--text) 40%, transparent);
}

.label {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
  margin: 4px 2px 8px;
}

.codebox {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  word-break: break-all;
  background: var(--surface);
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 10px;
  user-select: all;
}

textarea.codebox {
  width: 100%;
  min-height: 74px;
  resize: none;
  border: 2px solid transparent;
  color: var(--text);
  outline: none;
}

textarea.codebox:focus {
  border-color: var(--accent);
}

/* ---------- занятие ---------- */

.top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 0 16px;
}

.x {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface);
  display: grid;
  place-items: center;
  font-size: 20px;
  line-height: 1;
  color: var(--hint);
}

.top .bar {
  margin: 0;
  flex: 1;
  height: 9px;
}

.count {
  flex: none;
  min-width: 48px;
  text-align: right;
  font-size: 13.5px;
  color: var(--hint);
  font-variant-numeric: tabular-nums;
}

.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: slide-in 0.32s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.hanzi {
  font-family: var(--serif);
  font-size: 92px;
  font-weight: 600;
  line-height: 1.05;
  text-align: center;
  word-break: keep-all;
}

.hanzi.md { font-size: 64px; }
.hanzi.sm { font-size: 46px; }

.pinyin {
  font-size: 26px;
  font-weight: 600;
  text-align: center;
  letter-spacing: 0.01em;
}

.translation {
  font-size: 19px;
  text-align: center;
  color: var(--text);
  line-height: 1.3;
}

.prompt-tr {
  font-size: 30px;
  font-weight: 650;
  text-align: center;
  line-height: 1.2;
  padding: 0 6px;
}

.prompt-note {
  color: var(--hint);
  text-align: center;
  font-size: 14.5px;
}

.card-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-height: 560px;
  perspective: 1200px;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}

.card-wrap.dragging .flip-inner {
  transition: none;
}

.flip-inner {
  position: relative;
  flex: 1;
  min-height: 320px;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.3, 0.8, 0.25, 1);
}

.card-wrap.flipped .flip-inner {
  transform: rotateY(180deg);
}

.face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 24px 20px;
  border-radius: 30px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
}

.face::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 22px;
  border: 1.5px solid var(--line);
  pointer-events: none;
}

.face.back {
  transform: rotateY(180deg);
}

.tap-hint {
  position: absolute;
  bottom: 22px;
  color: var(--hint);
  font-size: 13.5px;
}

.tint {
  position: absolute;
  inset: 0;
  opacity: 0;
  border-radius: inherit;
  pointer-events: none;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: auto;
  padding-top: 8px;
  transition: opacity 0.25s, transform 0.25s;
}

.actions.off {
  opacity: 0.35;
  pointer-events: none;
  transform: translateY(6px);
}

.speak {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--accent);
  display: grid;
  place-items: center;
  box-shadow: 0 4px 12px -6px color-mix(in srgb, var(--text) 50%, transparent);
}

.speak svg {
  width: 22px;
  height: 22px;
}

.speak.big {
  width: 96px;
  height: 96px;
  align-self: center;
  background: var(--accent-soft);
}

.speak.big svg {
  width: 44px;
  height: 44px;
}

.center-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  padding: 18px 0 6px;
}

.opts {
  display: grid;
  gap: 10px;
  margin-top: auto;
}

.opt {
  position: relative;
  width: 100%;
  min-height: 58px;
  padding: 12px 18px;
  border-radius: 18px;
  background: var(--surface);
  border: 2px solid transparent;
  font-size: 17.5px;
  font-weight: 550;
  text-align: center;
  line-height: 1.25;
  transition: transform 0.12s, background 0.2s, border-color 0.2s, opacity 0.2s;
}

.opt.han {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 600;
}

.opt:active {
  transform: scale(0.98);
}

.opt.correct {
  background: var(--good-soft);
  border-color: var(--good);
  color: var(--good);
}

.opt.wrong {
  background: var(--bad-soft);
  border-color: var(--bad);
  color: var(--bad);
  animation: shake 0.4s;
}

.opt.dim {
  opacity: 0.45;
  pointer-events: none;
}

.reveal {
  background: var(--surface);
  border-radius: 20px;
  padding: 16px;
  display: grid;
  gap: 6px;
  justify-items: center;
  animation: rise 0.3s both;
}

.reveal .row {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* ---------- матч ---------- */

.match {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: minmax(84px, 96px);
  gap: 10px;
  align-content: start;
}

.tile {
  min-height: 74px;
  padding: 10px;
  border-radius: 18px;
  background: var(--surface);
  border: 2px solid transparent;
  font-size: 16px;
  font-weight: 550;
  line-height: 1.2;
  display: grid;
  place-items: center;
  text-align: center;
  transition: transform 0.12s, background 0.2s, border-color 0.2s, opacity 0.3s;
}

.tile.han {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
}

.tile:active {
  transform: scale(0.97);
}

.tile.sel {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.tile.done {
  background: var(--good-soft);
  border-color: transparent;
  color: var(--good);
  opacity: 0.55;
  pointer-events: none;
}

.tile.wrong {
  background: var(--bad-soft);
  border-color: var(--bad);
  animation: shake 0.4s;
}

/* ---------- итог ---------- */

.result {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: stretch;
  animation: rise 0.45s both;
}

.ring {
  --p: 0;
  align-self: center;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) calc(var(--p) * 1%), var(--line) 0);
  display: grid;
  place-items: center;
  margin-top: 6px;
}

.ring > div {
  width: 122px;
  height: 122px;
  border-radius: 50%;
  background: var(--bg);
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 34px;
  font-weight: 750;
  line-height: 1;
}

.ring small {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--hint);
}

.result h2 {
  margin: 0;
  text-align: center;
  font-size: 22px;
}

.result .sub {
  margin: -8px 0 0;
  text-align: center;
  color: var(--hint);
  font-size: 14.5px;
}

.missed {
  background: var(--surface);
  border-radius: 20px;
  padding: 6px 16px;
}

.missed .m {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 14px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.missed .m:last-child {
  border-bottom: 0;
}

.missed .h {
  grid-row: span 2;
  font-family: var(--serif);
  font-size: 30px;
}

.missed .p {
  font-weight: 600;
}

.missed .t {
  color: var(--hint);
  font-size: 14px;
}

.btns {
  display: grid;
  gap: 10px;
  margin-top: 4px;
}

/* ---------- конфетти и уведомление ---------- */

.confetti {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 30;
}

.confetti i {
  position: absolute;
  top: -12px;
  width: 9px;
  height: 14px;
  border-radius: 2px;
  animation: fall linear forwards;
}

#toast {
  position: fixed;
  left: 50%;
  bottom: max(28px, env(safe-area-inset-bottom));
  transform: translate(-50%, 30px);
  background: var(--text);
  color: var(--bg);
  padding: 11px 18px;
  border-radius: 99px;
  font-size: 14.5px;
  font-weight: 550;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 40;
  max-width: 90vw;
  text-align: center;
}

#toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- анимации ---------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}
@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes sheet-up {
  from { transform: translateY(100%); }
  to { transform: none; }
}
@keyframes slide-in {
  from { opacity: 0; transform: translateX(28px); }
  to { opacity: 1; transform: none; }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}
@keyframes fall {
  to { transform: translateY(105vh) rotate(720deg); opacity: 0.9; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-height: 640px) {
  .hanzi { font-size: 72px; }
  .flip-inner { min-height: 300px; }
}

/* ---------- пропуск и строки итога для своих заданий ---------- */

.blank {
  display: inline-block;
  min-width: 2.4em;
  height: 1em;
  margin: 0 0.15em;
  border-bottom: 3px solid var(--accent);
  vertical-align: -0.1em;
}

.missed .m.plain {
  grid-template-columns: 1fr;
}

.missed .m.plain .p {
  font-weight: 600;
}

.write-box{width:100%;max-width:300px;aspect-ratio:1;margin:8px auto;border:2px solid var(--line);border-radius:16px;background:var(--surface);touch-action:none;position:relative;overflow:hidden}
.write-box svg{width:100%;height:100%;display:block}
.write-acts{display:flex;gap:10px;justify-content:center;margin-top:8px}
.write-acts .btn{flex:1;max-width:160px}

/* ---------- цветные тоны: настройки ---------- */
html[data-pycolor="off"] .t1, html[data-pycolor="off"] .t2, html[data-pycolor="off"] .t3,
html[data-pycolor="off"] .t4, html[data-pycolor="off"] .t0 { color: inherit; }
html[data-hzcolor="on"] .hc1 { color: var(--t1); }
html[data-hzcolor="on"] .hc2 { color: var(--t2); }
html[data-hzcolor="on"] .hc3 { color: var(--t3); }
html[data-hzcolor="on"] .hc4 { color: var(--t4); }
.prefs { display: flex; flex-direction: column; gap: 10px; margin: 18px 4px 4px; font-size: 14px; color: var(--hint); }
.prefs label { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.prefs input { width: 18px; height: 18px; accent-color: var(--accent); }