/* ---------- トークン ---------- */
:root {
  color-scheme: light;

  --paper: #edf2ee;
  --surface: #ffffff;
  --ink: #1d2a3a;
  --ink-soft: #52606d;
  --line: #cfd9d2;

  /* 雀卓のフェルト */
  --felt: #1b5e43;
  --felt-deep: #12452f;
  --felt-ink: #e8f3ec;

  /* 牌 */
  --tile-face: #fbf8ef;
  --tile-edge: #cdc3aa;
  --tile-back: #dfa637;

  --shu: #c0392b;
  --focus: #dfa637;

  --font-ui: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
  --font-tile: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;

  --gutter: 16px;
  --radius: 10px;
}

/* ---------- 基本 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

main,
.site-header,
.site-footer {
  max-width: 560px;
  margin-inline: auto;
}

h1,
h2,
h3,
p {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  padding: 20px var(--gutter) 12px;
}

.site-title {
  font-family: var(--font-tile);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
}

.site-lead {
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

/* ---------- 牌 ---------- */
.tile {
  display: inline-block;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: none;
  line-height: 0;
  /* 牌の背（厚み）を下側の影で表す */
  box-shadow:
    0 3px 0 var(--tile-back),
    0 5px 6px rgb(0 0 0 / 0.22);
  -webkit-tap-highlight-color: transparent;
}

.tile svg {
  display: block;
  width: 100%;
  height: auto;
}

.tile svg .tile-face {
  fill: var(--tile-face);
  stroke: var(--tile-edge);
  stroke-width: 1;
}

button.tile {
  cursor: pointer;
  transition: transform 120ms ease-out;
}

button.tile:active:not(:disabled) {
  transform: translateY(2px);
}

button.tile:disabled {
  cursor: not-allowed;
  opacity: 0.3;
  box-shadow: 0 2px 0 var(--tile-edge);
}

/* ---------- 手牌（フェルトの卓） ---------- */
.table {
  margin-bottom: 12px;
  padding: 16px var(--gutter) 20px;
  background:
    radial-gradient(120% 90% at 50% 0%, rgb(255 255 255 / 0.08), transparent 60%),
    var(--felt);
  color: var(--felt-ink);
}

@media (min-width: 560px) {
  .table {
    border-radius: var(--radius);
  }
}

.hand-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.hand-title {
  font-size: 1rem;
}

.hand-status {
  font-size: 0.9375rem;
}

/* 牌を足して 2 列目に入っても下の牌パレットがずれないよう、最初から 2 列分（牌 3:4 ×2 ＋行間＋和了牌ラベル）の高さを取る。
   14 枚はどの画面幅でも 2 列に収まる */
.table {
  --hand-tile: clamp(36px, 11.2vw, 44px);
  --hand-row-gap: 8px;
  --hand-label: 30px;
}

.hand-empty,
.hand-tiles {
  min-height: calc(var(--hand-tile) * 8 / 3 + var(--hand-row-gap) + var(--hand-label));
}

.hand-empty {
  padding: 20px 0 8px;
  color: var(--felt-ink);
  opacity: 0.85;
}

.hand-tiles {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  align-content: flex-start;
  gap: var(--hand-row-gap) 3px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hand-tiles li {
  display: flex; /* 行の高さ分の余白を出さず、牌の高さちょうどにする */
}

.hand-tiles .tile {
  width: var(--hand-tile);
}

.hand-tiles .tile[aria-pressed="true"] {
  transform: translateY(-8px);
  outline: 3px solid var(--focus);
  outline-offset: 1px;
}

/* 和了牌は少し離して置き、ラベルは幅を取らないよう牌の下に重ねる */
.hand-winning {
  position: relative;
  margin: 0 0 var(--hand-label) 11px;
}

.hand-winning .tile {
  box-shadow:
    0 3px 0 var(--tile-back),
    0 0 0 3px var(--shu),
    0 6px 8px rgb(0 0 0 / 0.3);
}

.hand-winning-label {
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  font-size: 0.8125rem;
  font-weight: 700;
}

.tile-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: var(--felt-deep);
}

.tile-actions-name {
  margin-right: auto;
  font-weight: 700;
}

.tile-actions .button {
  padding: 0 12px;
}

.hand-melds {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.meld {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 4px 6px 10px;
  border-radius: var(--radius);
  background: var(--felt-deep);
}

.meld-kind {
  font-size: 0.8125rem;
  font-weight: 700;
}

.meld-tiles {
  display: flex;
  gap: 2px;
}

.meld-tiles .tile {
  width: 28px;
}

.meld-red {
  min-width: 44px;
  min-height: 36px;
  border: 1px solid rgb(255 255 255 / 0.35);
  border-radius: 999px;
  background: transparent;
  color: var(--felt-ink);
  font-size: 0.8125rem;
  font-weight: 700;
  cursor: pointer;
}

.meld-red[aria-pressed="true"] {
  border-color: var(--shu);
  background: var(--shu);
  color: #fff;
}

.meld-remove {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--felt-ink);
  font-size: 1.25rem;
  cursor: pointer;
}

/* ---------- 共通パネル ---------- */
.panel {
  margin: 0 var(--gutter) 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.section-title {
  margin-bottom: 8px;
  font-size: 1rem;
}

.button {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
  cursor: pointer;
}

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.button-quiet {
  border-color: transparent;
  background: transparent;
}

.table .button {
  border-color: rgb(255 255 255 / 0.25);
  background: rgb(255 255 255 / 0.1);
  color: var(--felt-ink);
}

.table .button-quiet {
  border-color: transparent;
  background: transparent;
}

/* ---------- 牌パレット ---------- */
.calls {
  margin-bottom: 14px;
}

.calls-label {
  display: flex;
  align-items: center;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.calls-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.call-button {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  font-weight: 700;
  cursor: pointer;
}

.call-button[aria-pressed="true"] {
  border-color: var(--felt);
  background: var(--felt);
  color: var(--felt-ink);
}

.call-hint:not(:empty) {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 10px;
  padding: 8px 4px 8px 12px;
  border-left: 4px solid var(--felt);
  background: var(--paper);
  font-size: 0.9375rem;
  font-weight: 600;
}

.call-hint .button {
  margin-left: auto;
}

.palette {
  display: grid;
  gap: 10px;
  padding: 4px 0;
}

.palette-row {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 4px;
}

.palette-row-label {
  grid-column: span 6;
  display: inline-flex;
  align-items: center;
  padding-left: 8px;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

#palette.is-calling .palette {
  border-radius: 8px;
  outline: 2px dashed var(--felt);
  outline-offset: 6px;
}

.palette-tools {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

/* ---------- 条件 ---------- */
.field {
  margin: 0;
  padding: 10px 0;
  border: 0;
}

.field + .field {
  border-top: 1px solid var(--line);
}

/* legend は fieldset の枠の上に重なって描かれるので、float で通常の要素として並べる */
legend.field-label {
  float: left;
  width: 100%;
  margin-bottom: 4px;
}

legend.field-label + * {
  clear: both;
}

.field-label {
  display: flex;
  align-items: center;
  padding: 0;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-soft);
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.segment {
  display: inline-flex;
  align-items: center;
}

.segment label {
  position: relative;
  cursor: pointer;
}

.segment input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.segment-text {
  display: inline-grid;
  place-items: center;
  min-width: 56px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  font-weight: 700;
}

.segment input:checked + .segment-text {
  border-color: var(--felt);
  background: var(--felt);
  color: var(--felt-ink);
}

.segment input:focus-visible + .segment-text {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.dealer {
  display: inline-flex;
  align-items: center;
  margin-top: 4px;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

/* 本場の増減 */
.stepper {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.stepper-button {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
}

.stepper-button:disabled {
  opacity: 0.4;
  cursor: default;
}

.stepper-value {
  min-width: 4.5em;
  text-align: center;
  font-weight: 700;
}

/* 状況役のチェックボックス */
.checks {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
}

.check {
  display: inline-flex;
  align-items: center;
}

.check label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  cursor: pointer;
}

.check input {
  width: 20px;
  height: 20px;
  margin: 0;
  accent-color: var(--felt);
}

.check input:disabled + .check-text {
  color: var(--ink-soft);
  opacity: 0.5;
}

/* ---------- ドラ ---------- */
.dora-row + .dora-row {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.dora-tiles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.dora-tiles .tile {
  width: 40px;
}

.dora-add {
  width: 40px;
  aspect-ratio: 48 / 64;
  border: 2px dashed var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 1.25rem;
  cursor: pointer;
}

.dora-result {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 6px;
  margin-top: 10px;
  font-weight: 700;
}

.dora-result .tile {
  width: 28px;
}

.dora-note {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--ink-soft);
}

/* ---------- 牌を選ぶダイアログ ---------- */
.picker {
  width: min(560px, calc(100vw - 16px));
  max-width: none;
  padding: 12px 12px 16px;
  border: 0;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
}

.picker::backdrop {
  background: rgb(18 69 47 / 0.55);
}

.picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.picker-title {
  font-size: 1rem;
}

.picker-close {
  width: 44px;
  height: 44px;
  border: 0;
  background: none;
  font-size: 1.375rem;
  cursor: pointer;
}

/* ---------- 結果 ---------- */
.result-waiting {
  color: var(--ink-soft);
}

.result-error {
  padding-left: 12px;
  border-left: 4px solid var(--shu);
  font-weight: 700;
}

.result-who {
  font-weight: 700;
  color: var(--ink-soft);
}

.result-points {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 8px;
}

.result-number {
  font-family: var(--font-tile);
  font-size: clamp(2.75rem, 14vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.result-unit {
  font-size: 1.25rem;
  font-weight: 700;
}

.result-limit {
  display: inline-flex;
  align-items: center;
  padding-left: 10px;
  border-radius: 999px;
  background: var(--shu);
  color: #fff;
  font-weight: 700;
}

.result-payment {
  margin-top: 2px;
  font-weight: 600;
}

.result-fu-han {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 6px;
  font-size: 1.125rem;
  font-weight: 700;
}

.result-fu-han > span {
  display: inline-flex;
  align-items: center;
}

.yaku-table {
  margin-top: 12px;
}

.yaku-table caption {
  padding-bottom: 4px;
  text-align: left;
  font-weight: 700;
}

.breakdown {
  margin-top: 12px;
  border-top: 1px solid var(--line);
}

.breakdown summary {
  min-height: 44px;
  padding: 10px 0;
  font-weight: 700;
  cursor: pointer;
}

.breakdown-table {
  width: 100%;
  border-collapse: collapse;
}

.breakdown-table th,
.breakdown-table td {
  padding: 2px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-weight: 400;
}

.breakdown-table td {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.breakdown-table tfoot th,
.breakdown-table tfoot td {
  padding-top: 8px;
  border-bottom: 0;
  font-weight: 700;
}

.breakdown-name {
  display: inline-flex;
  align-items: center;
}

.breakdown-note {
  padding-bottom: 8px;
  color: var(--ink-soft);
}

/* ---------- 用語解説 ---------- */
.info-button {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin: -10px -8px -10px -6px;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  vertical-align: middle;
}

.info-icon {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  font-family: var(--font-tile);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1;
  opacity: 0.8;
}

.term-popover {
  position: fixed;
  inset: auto;
  margin: 0;
  padding: 14px 16px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 12px 32px rgb(29 42 58 / 0.22);
}

.term-popover-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.term-popover-title {
  padding-top: 8px;
  font-size: 1.0625rem;
}

.term-popover-reading {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--ink-soft);
}

.term-popover-close {
  flex: none;
  width: 44px;
  height: 44px;
  margin: -6px -10px 0 0;
  border: 0;
  background: none;
  font-size: 1.375rem;
  cursor: pointer;
}

.term-popover-body {
  margin-top: 4px;
  font-size: 0.9375rem;
}

.term-popover-tiles {
  display: flex;
  gap: 3px;
  margin-top: 10px;
  padding-bottom: 4px;
}

.term-popover-tiles .tile {
  width: 30px;
}

/* ---------- 広告 ---------- */
.ad {
  margin: 24px var(--gutter);
  min-height: 250px;
}

.ad-label {
  font-size: 0.75rem;
  color: var(--ink-soft);
}

/* ---------- 解説 ---------- */
.guide {
  margin: 32px var(--gutter) 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.guide h2 {
  margin-bottom: 8px;
  font-family: var(--font-tile);
  font-size: 1.25rem;
}

.guide h3 {
  margin: 20px 0 6px;
  font-size: 1rem;
}

.guide p,
.guide li {
  font-size: 0.9375rem;
}

.guide ul {
  margin: 0;
  padding-left: 1.25em;
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.guide-table th,
.guide-table td {
  padding: 6px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.guide-table thead th {
  font-size: 0.8125rem;
  color: var(--ink-soft);
}

.guide-table thead th:last-child {
  text-align: right;
}

.guide-table tbody th {
  font-weight: 400;
}

.guide-table td {
  text-align: right;
}

.guide-more {
  margin-top: 16px;
}

.guide-more a {
  display: inline-block;
  padding-block: 10px;
  color: var(--felt);
  font-weight: 700;
}

/* ---------- 解説ページ（guide/） ---------- */
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
}

.breadcrumb li + li::before {
  content: "›";
  margin-inline: 6px;
  color: var(--ink-soft);
}

.breadcrumb a {
  display: inline-block;
  padding-block: 10px;
  color: var(--ink-soft);
}

.guide-page {
  margin-top: 8px;
  padding-top: 0;
  border-top: 0;
}

.guide-page h2 {
  margin: 28px 0 8px;
}

.guide-page > * + p,
.guide-page > * + ul,
.guide-page > * + ol,
.guide-page > * + table {
  margin-top: 10px;
}

.guide-page p,
.guide-page li {
  line-height: 1.8;
}

.guide-page ol {
  margin: 0;
  padding-left: 1.5em;
}

.guide-page a {
  color: var(--felt);
}

.guide-page .guide-table td {
  padding-left: 12px;
}

.guide-page .guide-table tfoot th,
.guide-page .guide-table tfoot td {
  border-bottom: 0;
  font-weight: 700;
}

/* 牌の図（ビルド時に data-tiles から SVG へ置き換える） */
.tiles {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 10px 12px;
  padding-bottom: 6px;
}

.tile-group {
  display: inline-flex;
}

.tiles .tile {
  width: 30px;
  margin-right: 2px;
}

/* あがり牌は少し離して朱色の枠で示す */
.tiles .tile.is-winning {
  margin-left: 8px;
  box-shadow:
    0 3px 0 var(--tile-back),
    0 0 0 2px var(--shu);
}

.guide-cta {
  margin-top: 32px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.guide-cta p {
  margin-bottom: 12px;
}

.guide-cta .button {
  display: inline-grid;
  place-items: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: var(--radius);
  background: var(--felt);
  color: var(--felt-ink);
  font-weight: 700;
  text-decoration: none;
}

/* .guide ul の字下げより優先する */
.guide .guide-links,
.guide .guide-cards {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* 文章が入る表は左寄せにする（数字だけの表は右寄せのまま） */
.guide-table.is-text td,
.guide-table.is-text thead th:last-child {
  text-align: left;
}

.guide-links li {
  padding-block: 6px;
  border-bottom: 1px solid var(--line);
}

.guide-links a {
  display: block;
  padding-block: 4px;
  font-weight: 700;
}

.guide-links span {
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.guide .guide-cards {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.guide-card {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 6px solid var(--felt);
  border-radius: var(--radius);
  background: var(--surface);
  color: inherit;
  text-decoration: none;
}

.guide-card strong {
  display: block;
  font-size: 1.05rem;
  color: var(--felt);
}

.guide-card span {
  font-size: 0.875rem;
  color: var(--ink-soft);
}

/* ---------- フッター ---------- */
.site-footer {
  padding: 24px var(--gutter) 40px;
  font-size: 0.8125rem;
  color: var(--ink-soft);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 20px;
  margin: 12px 0 8px;
  padding: 0;
  list-style: none;
}

/* タップしやすいよう上下に余白を取る */
.footer-links a {
  display: inline-block;
  padding-block: 12px;
  color: var(--ink-soft);
}

.site-footer small {
  display: block;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}