:root {
  color-scheme: light;
  --orange: #f47721;
  --orange-deep: #b5291d;
  --orange-soft: #ffd8bd;
  --cream: #fff8ef;
  --paper: #fffdfa;
  --ink: #1f1d1a;
  --muted: #74665b;
  --line: #332820;
  --correct: #2f7d61;
  --present: #c78318;
  --absent: #7b746e;
  --shadow: rgba(75, 33, 8, 0.18);
  --bamboo-light: #f3d99b;
  --bamboo: #c9954b;
  --bamboo-deep: #8a5a2b;
  --header-height: 72px;
  --font-display: "Arial Black", "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-body: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --orange: #ff7a1a;
  --orange-deep: #ff9d4f;
  --orange-soft: #633218;
  --cream: #0e0b09;
  --paper: #19130f;
  --ink: #fff4e9;
  --muted: #c9ac96;
  --line: #ff8a35;
  --correct: #3aae70;
  --present: #d58d16;
  --absent: #5e554e;
  --shadow: rgba(0, 0, 0, 0.45);
  --bamboo-light: #684521;
  --bamboo: #4c2f19;
  --bamboo-deep: #efb768;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 300px;
  background: var(--cream);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background-color: var(--cream);
  background-image:
    linear-gradient(90deg, color-mix(in srgb, var(--bamboo) 7%, transparent) 1px, transparent 1px),
    linear-gradient(0deg, color-mix(in srgb, var(--bamboo-deep) 6%, transparent) 1px, transparent 1px),
    repeating-linear-gradient(135deg, transparent 0 34px, color-mix(in srgb, var(--bamboo) 4.5%, transparent) 34px 36px),
    radial-gradient(circle at 15% 0%, color-mix(in srgb, var(--orange-soft) 38%, transparent), transparent 31%),
    radial-gradient(circle at 90% 18%, color-mix(in srgb, var(--bamboo-light) 18%, transparent), transparent 26%);
  background-size: 18px 18px, 18px 18px, 72px 72px, auto, auto;
  background-attachment: fixed;
  font-family: var(--font-body);
}

button,
input,
select {
  color: inherit;
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

.game-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  min-height: var(--header-height);
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
  padding: 8px clamp(12px, 3vw, 34px);
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 93%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 16%, transparent);
  box-shadow: 0 8px 30px color-mix(in srgb, var(--shadow) 52%, transparent);
  backdrop-filter: blur(16px);
}

:root[data-theme="dark"] .game-header {
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom-color: color-mix(in srgb, var(--orange) 44%, transparent);
}

.back-link,
.game-wordmark {
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.back-link {
  gap: 9px;
  justify-self: start;
  padding: 8px 10px;
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 900;
}

.back-link:hover,
.game-wordmark:hover {
  background: color-mix(in srgb, var(--orange-soft) 48%, transparent);
}

.back-link img {
  width: 24px;
  height: 24px;
}

.game-wordmark {
  gap: 9px;
  padding: 4px 10px;
  border-radius: 12px;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.08em;
}

.cat-mark {
  display: block;
  width: 42px;
  height: 42px;
  object-fit: contain;
  filter: drop-shadow(2px 3px 0 color-mix(in srgb, var(--ink) 24%, transparent));
}

.game-actions {
  display: flex;
  gap: 3px;
  justify-self: end;
  padding: 4px;
  background: color-mix(in srgb, var(--cream) 74%, var(--paper));
  border: 1px solid color-mix(in srgb, var(--line) 22%, transparent);
  border-radius: 13px;
  box-shadow: 0 5px 14px color-mix(in srgb, var(--shadow) 42%, transparent);
}

.game-actions button {
  min-width: 58px;
  min-height: 40px;
  padding: 0 13px;
  background: transparent;
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  font-weight: 900;
}

.game-actions button:hover {
  color: var(--ink);
  background: var(--orange-soft);
}

#themeToggle {
  min-width: 42px;
  padding-inline: 8px;
  color: var(--orange-deep);
  font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
  font-size: 19px;
  line-height: 1;
}

.game-shell {
  width: min(820px, calc(100% - 28px));
  margin: 0 auto;
  padding: clamp(34px, 6vw, 68px) 0 70px;
}

.game-intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.eyebrow,
.step-label,
.result-kicker {
  margin: 0 0 7px;
  color: var(--orange-deep);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.game-intro h1 {
  max-width: 500px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 54px);
  font-weight: 950;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.mode-panel {
  display: grid;
  flex: 0 0 auto;
  gap: 8px;
}

.mode-switch {
  display: flex;
  padding: 4px;
  background: var(--paper);
  border: 2px solid var(--line);
  border-radius: 12px;
  box-shadow: 4px 4px 0 var(--line);
}

.mode-switch button,
.new-practice {
  padding: 8px 11px;
  background: transparent;
  border: 0;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}

.mode-switch button.active {
  color: #fff;
  background: var(--orange-deep);
}

.new-practice {
  color: var(--orange-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.game-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 15px;
  color: var(--muted);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  border: 1px solid color-mix(in srgb, var(--line) 22%, transparent);
  border-bottom: 0;
  border-radius: 16px 16px 0 0;
  font-size: 13px;
  font-weight: 800;
}

.game-status p {
  margin: 0;
}

.timer {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--orange-deep);
  font-variant-numeric: tabular-nums;
}

.board-panel {
  padding: clamp(14px, 3vw, 24px);
  background: var(--paper);
  border: 1px solid color-mix(in srgb, var(--line) 22%, transparent);
  border-radius: 0 0 18px 18px;
  box-shadow: 0 22px 55px -38px var(--line);
}

.board {
  display: grid;
  gap: 10px;
}

.board-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(6px, 1.5vw, 10px);
}

.guess-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 112px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  overflow: hidden;
  padding: 10px 4px 11px;
  background: color-mix(in srgb, var(--paper) 90%, var(--orange-soft));
  border: 1px solid color-mix(in srgb, var(--line) 18%, transparent);
  border-radius: 14px;
}

.guess-tile.empty {
  min-height: 68px;
  background: color-mix(in srgb, var(--paper) 95%, var(--orange-soft));
  border-style: dashed;
}

.guess-character {
  display: grid;
  width: clamp(46px, 56%, 64px);
  aspect-ratio: 1;
  place-items: center;
  color: #fff;
  background: var(--absent);
  border: 0;
  border-radius: 10px;
  box-shadow: inset 0 -3px 0 color-mix(in srgb, #000 15%, transparent);
  font-family: var(--font-display);
  font-size: clamp(27px, 5vw, 38px);
  font-weight: 950;
  line-height: 1;
}

.guess-character[data-state="correct"],
.part-value[data-state="correct"],
.legend i[data-state="correct"] {
  background: var(--correct);
}

.guess-character[data-state="present"],
.part-value[data-state="present"],
.legend i[data-state="present"] {
  background: var(--present);
}

.guess-character[data-state="absent"],
.part-value[data-state="absent"],
.legend i[data-state="absent"] {
  background: var(--absent);
}

.tile-parts {
  display: flex;
  width: 100%;
  min-height: 27px;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.part-value {
  display: inline-grid;
  width: var(--part-width);
  max-width: 100%;
  flex: 0 0 auto;
  place-items: center;
  padding: 6px 5px;
  color: #fff;
  background: var(--absent);
  border-radius: 7px;
  box-shadow: inset 0 -2px 0 color-mix(in srgb, #000 14%, transparent);
  font-family: ui-monospace, "Cascadia Mono", monospace;
  font-size: clamp(10px, 2.2vw, 13px);
  font-weight: 900;
  line-height: 1;
}

.game-notice {
  margin: 16px 0 0;
  padding: 11px 13px;
  color: var(--ink);
  background: var(--orange-soft);
  border: 2px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.55;
}

.composer {
  margin-top: 24px;
  padding: clamp(18px, 4vw, 28px);
  background: var(--paper);
  border: 1px solid color-mix(in srgb, var(--line) 24%, transparent);
  border-radius: 18px;
  box-shadow: 0 22px 55px -40px var(--line);
}

.composer-heading,
.modal-card > header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
}

.composer h2,
.modal-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 31px);
  line-height: 1.1;
}

.helper-button,
.text-action {
  padding: 7px 9px;
  color: var(--orange-deep);
  background: transparent;
  border: 0;
  cursor: pointer;
  font-size: 13px;
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.helper-button {
  border: 2px solid var(--orange);
  border-radius: 8px;
  text-decoration: none;
}

.character-inputs {
  display: grid;
  width: min(100%, 410px);
  grid-template-columns: repeat(4, minmax(0, 88px));
  justify-content: center;
  gap: 10px;
  margin: 22px auto 17px;
}

.character-inputs input {
  width: 100%;
  min-width: 0;
  aspect-ratio: 1;
  padding: 0;
  color: var(--ink);
  background: var(--cream);
  border: 2px solid color-mix(in srgb, var(--line) 76%, transparent);
  border-radius: 12px;
  caret-color: var(--orange);
  font-family: var(--font-display);
  font-size: clamp(34px, 8vw, 50px);
  font-weight: 950;
  line-height: 1;
  text-align: center;
}

.character-inputs input:focus {
  border-color: var(--orange);
  box-shadow: 4px 4px 0 var(--orange-soft);
}

.primary-action {
  width: 100%;
  padding: 13px 18px;
  color: #fff;
  background: var(--orange-deep);
  border: 2px solid var(--line);
  border-radius: 9px;
  box-shadow: 4px 4px 0 var(--line);
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 900;
}

.primary-action:hover {
  transform: translate(-1px, -1px);
  box-shadow: 6px 6px 0 var(--line);
}

.primary-action:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--line);
}

.composer-tip {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

code {
  padding: 1px 4px;
  color: var(--orange-deep);
  background: var(--orange-soft);
  border-radius: 4px;
  font-family: ui-monospace, "Cascadia Mono", monospace;
}

.reading-editor {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0 16px;
}

.reading-card {
  display: grid;
  min-width: 0;
  gap: 9px;
  padding: 12px;
  background: var(--cream);
  border: 1px solid color-mix(in srgb, var(--line) 24%, transparent);
  border-radius: 12px;
}

.reading-character {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 950;
  text-align: center;
}

.reading-card select,
.reading-card input,
.rare-search input {
  width: 100%;
  min-width: 0;
  padding: 9px 8px;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid color-mix(in srgb, var(--line) 68%, transparent);
  border-radius: 7px;
  font-family: ui-monospace, "Cascadia Mono", monospace;
  font-size: 13px;
}

.reading-card label {
  color: var(--muted);
  font-size: 10px;
  font-weight: 900;
}

.game-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 24px clamp(16px, 4vw, 52px);
  color: #fff;
  background: #21170f;
  border-top: 5px solid var(--orange);
  font-size: 12px;
  font-weight: 800;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer-brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.game-footer .footer-notice {
  max-width: 620px;
  line-height: 1.6;
  text-align: right;
}

.game-footer a {
  color: var(--orange-soft);
  text-underline-offset: 3px;
}

@media (max-width: 640px) {
  .game-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .game-footer .footer-notice {
    text-align: left;
  }
}

.game-modal[hidden],
.toast[hidden] {
  display: none;
}

.game-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  overflow-y: auto;
  place-items: center;
  padding: 18px;
}

.modal-shade {
  position: fixed;
  inset: 0;
  background: rgba(20, 11, 5, 0.72);
  backdrop-filter: blur(3px);
}

.modal-card {
  position: relative;
  width: min(540px, 100%);
  max-height: calc(100vh - 36px);
  overflow-y: auto;
  padding: clamp(20px, 5vw, 34px);
  background: var(--paper);
  border: 3px solid var(--line);
  border-radius: 14px;
  box-shadow: 10px 10px 0 var(--orange);
}

.close-button {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  color: var(--ink);
  background: var(--cream);
  border: 2px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
  font-size: 25px;
  font-weight: 900;
  line-height: 1;
}

.help-copy {
  margin-top: 23px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.help-copy strong {
  color: var(--ink);
}

.legend {
  display: grid;
  gap: 8px;
  margin: 18px 0;
}

.legend span {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-weight: 800;
}

.legend i {
  width: 23px;
  height: 23px;
  border: 2px solid var(--line);
  border-radius: 4px;
}

.rare-search {
  display: grid;
  gap: 7px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.rare-hint {
  margin: 12px 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.rare-results {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.rare-result {
  display: grid;
  min-width: 0;
  gap: 3px;
  padding: 9px 4px;
  color: var(--ink);
  background: var(--cream);
  border: 2px solid color-mix(in srgb, var(--line) 58%, transparent);
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
}

.rare-result strong {
  font-family: var(--font-display);
  font-size: 29px;
}

.rare-result small {
  overflow: hidden;
  color: var(--orange-deep);
  font-family: ui-monospace, "Cascadia Mono", monospace;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stats-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 23px;
}

.stat-box {
  padding: 12px 5px;
  background: var(--cream);
  border: 2px solid var(--line);
  border-radius: 8px;
  text-align: center;
}

.stat-box strong {
  display: block;
  color: var(--orange-deep);
  font-family: var(--font-display);
  font-size: 24px;
}

.stat-box span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
}

.distribution {
  display: grid;
  gap: 7px;
  margin-top: 22px;
}

.distribution-row {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 900;
}

.distribution-bar {
  min-width: 26px;
  padding: 4px 6px;
  color: #fff;
  background: var(--orange-deep);
  border-radius: 4px;
  text-align: right;
}

.recent-records {
  margin-top: 24px;
  text-align: left;
}

.recent-records h3 {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-size: 16px;
}

.record-list {
  display: grid;
  border-top: 2px solid var(--line);
}

.record-row {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  padding: 9px 2px;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 38%, transparent);
  font-size: 12px;
}

.record-row strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.record-row span {
  color: var(--muted);
}

.record-row time {
  color: var(--orange-deep);
  font-family: ui-monospace, "Cascadia Mono", monospace;
  font-weight: 900;
}

.result-card {
  text-align: center;
}

.result-card .result-kicker {
  margin-top: 3px;
}

.result-answer {
  margin: 22px 0 5px;
  font-family: var(--font-display);
  font-size: clamp(34px, 10vw, 58px);
  font-weight: 950;
  letter-spacing: 0.12em;
}

.result-reading {
  margin: 0;
  color: var(--orange-deep);
  font-family: ui-monospace, "Cascadia Mono", monospace;
  font-weight: 900;
}

.result-definition {
  margin: 18px 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.result-summary {
  margin: 18px 0;
  padding: 12px;
  background: var(--cream);
  border: 2px solid var(--line);
  border-radius: 8px;
  font-weight: 900;
}

.result-actions {
  display: grid;
  gap: 11px;
}

.result-actions a {
  padding: 10px;
  color: var(--orange-deep);
  font-weight: 900;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 120;
  width: max-content;
  max-width: calc(100% - 32px);
  padding: 11px 15px;
  color: #fff;
  background: #21170f;
  border: 2px solid var(--orange);
  border-radius: 8px;
  box-shadow: 5px 5px 0 var(--orange);
  font-size: 13px;
  font-weight: 900;
  line-height: 1.45;
  text-align: center;
  transform: translateX(-50%);
}

body.modal-open {
  overflow: hidden;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (max-width: 640px) {
  :root {
    --header-height: 110px;
  }

  .game-header {
    grid-template-columns: 1fr auto;
    grid-template-rows: 48px 44px;
    gap: 4px 10px;
    padding: 5px 10px 8px;
  }

  .back-link {
    padding: 6px 4px;
    font-size: 14px;
  }

  .game-wordmark {
    grid-column: 2;
    grid-row: 1;
    padding: 3px 4px 3px 8px;
    font-size: 20px;
  }

  .cat-mark {
    width: 34px;
    height: 34px;
  }

  .game-actions {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
    height: 40px;
    align-self: center;
    justify-self: stretch;
    gap: 2px;
    margin: 0;
    padding: 3px;
    overflow: hidden;
    border-width: 1px;
    border-radius: 11px;
    box-shadow: none;
  }

  .game-actions button {
    min-width: 0;
    min-height: 32px;
    flex: 1 1 0;
    padding-inline: 10px;
  }

  #themeToggle {
    flex-grow: 0.7;
    font-size: 19px;
  }

  .game-shell {
    width: min(calc(100% - 20px), 760px);
    padding-top: 26px;
  }

  .game-intro {
    display: grid;
    align-items: start;
  }

  .mode-panel {
    grid-template-columns: 1fr auto;
  }

  .mode-switch button {
    flex: 1 1 0;
  }

  .board-panel {
    padding: 10px;
    box-shadow: 0 18px 40px -32px var(--line);
  }

  .board,
  .board-row {
    gap: 6px;
  }

  .guess-tile {
    min-height: 102px;
    gap: 7px;
    border-radius: 10px;
  }

  .guess-character {
    width: clamp(42px, 66%, 54px);
    font-size: clamp(25px, 8vw, 32px);
  }

  .reading-editor {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rare-results {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 380px) {
  .game-wordmark {
    font-size: 19px;
  }

  .game-actions button {
    min-width: 0;
    padding-inline: 8px;
  }

  .character-inputs {
    gap: 6px;
  }

  .guess-character {
    font-size: 27px;
  }

  .part-value {
    padding: 5px 3px;
    font-size: 9px;
  }

  .tile-parts {
    gap: 2px;
  }

  .stats-overview {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}