/* スマホの片手操作を前提にした縦1列レイアウト。 */
:root {
  --bg: #10131a;
  --panel: #1a1f2b;
  --panel-2: #232a39;
  --line: #333c4f;
  --text: #e8ecf4;
  --muted: #93a0b8;
  --accent: #6ea8fe;
  --win: #4ade80;
  --lose: #f87171;
  --warn: #fbbf24;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    "Hiragino Kaku Gothic ProN",
    "Noto Sans JP",
    sans-serif;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  padding: 10px 14px;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0d1117;
  font-weight: 700;
}

button.big {
  width: 100%;
  padding: 16px;
  font-size: 1.05rem;
}

button.ghost {
  background: transparent;
}

button.wide {
  width: 100%;
  margin-top: 10px;
}

.screen {
  max-width: 560px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

a {
  color: var(--accent);
}

.site-footer {
  margin-top: 28px;
  text-align: center;
  font-size: 0.9rem;
}

.legal-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.legal-page h1 {
  margin-top: 28px;
}

.legal-page h2 {
  margin-top: 32px;
  font-size: 1.2rem;
}

/* display を持たせた要素は hidden 属性より display が勝つので、明示的に消す。
   ID指定の #screen-game に負けないよう、こちらもIDで書く。 */
.screen[hidden],
#screen-game[hidden],
#screen-lobby[hidden] {
  display: none;
}

/* 対戦画面は画面の高さいっぱいを使い、手札バーを常に下端へ置く。
   理由: PCの縦長ウィンドウだと、手札バーが画面の真ん中で浮いて見えるため。
   スマホでも指の位置が毎回同じところに来る。 */
#screen-game {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

#stage {
  flex: 1;
}

/* --- ロビー --- */

#screen-lobby h1 {
  font-size: 2rem;
  line-height: 1.25;
  margin: 40px 0 8px;
}

.lead {
  color: var(--muted);
  margin: 0 0 28px;
}

.join {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.join input {
  flex: 1;
  min-width: 0;
  font: inherit;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.lobby-block {
  margin: 0 0 26px;
}

.lobby-head {
  font-size: 1rem;
  margin: 0 0 6px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.cpu-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

/* 名前・難易度・手口を1枚に。難しさより「どんな相手か」を先に読ませる。 */
.cpu-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 10px;
  text-align: left;
  padding: 12px 14px;
  background: var(--panel-2);
}

.cpu-name {
  font-weight: 700;
}

.cpu-level {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  font-size: 0.75rem;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 10px;
}

.cpu-tagline {
  grid-column: 1 / -1;
  font-size: 0.85rem;
  color: var(--muted);
}

.note {
  color: var(--muted);
  font-size: 0.85rem;
}

.note.warn {
  color: var(--warn);
}

/* --- HUD --- */

#hud {
  position: sticky;
  top: 0;
  background: var(--bg);
  padding-top: 8px;
  z-index: 5;
}

.hud-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--muted);
  flex-wrap: wrap;
}

.room-code b {
  color: var(--text);
  letter-spacing: 0.12em;
}

.hud-row .ghost {
  padding: 4px 8px;
  font-size: 0.75rem;
}

.online {
  margin-left: auto;
}

.online.on {
  color: var(--win);
}

.online.off {
  color: var(--lose);
}

.score-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 10px 0;
  padding: 10px 14px;
  background: var(--panel);
  border-radius: 12px;
}

.score {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 64px;
}

.score span {
  font-size: 0.7rem;
  color: var(--muted);
}

.score b {
  font-size: 1.8rem;
  line-height: 1;
}

.score.me b {
  color: var(--accent);
}

.round {
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

.happening-strip {
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.35);
  color: var(--warn);
  border-radius: 10px;
  padding: 6px 12px;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

/* --- 本体 --- */

.panel {
  background: var(--panel);
  border-radius: 14px;
  padding: 16px;
}

.panel.center {
  text-align: center;
}

.panel h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.waiting-note {
  color: var(--muted);
  margin: 18px 0 4px;
}

.big-code {
  font-size: 2.4rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  margin: 12px 0;
}

.deck-grid {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.deck-card {
  display: grid;
  gap: 2px;
  text-align: left;
  padding: 14px;
  background: var(--panel-2);
}

.deck-name {
  font-weight: 700;
  margin-bottom: 4px;
}

.deck-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.deck-line i {
  font-style: normal;
  color: var(--muted);
}

.deck-total {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 6px;
}

.trade-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.trade-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  padding: 14px;
}

.trade-row em {
  font-style: normal;
  font-size: 0.75rem;
  color: var(--muted);
}

.happening-name {
  font-size: 1.9rem;
  color: var(--warn);
  margin: 4px 0;
}

.happening-text {
  margin: 0 0 12px;
}

.reveal {
  background: var(--panel-2);
  border-radius: 10px;
  padding: 10px;
  font-size: 0.85rem;
  margin: 16px 0;
}

.hand-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 12px 0;
}

.hand-btn {
  display: grid;
  gap: 2px;
  padding: 16px 6px;
}

.hand-btn.on {
  border-color: var(--accent);
  background: rgba(110, 168, 254, 0.16);
}

.hand-name {
  font-weight: 700;
}

.hand-count {
  font-size: 0.75rem;
  color: var(--muted);
}

.counter {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0;
}

.step {
  width: 52px;
  font-size: 1.3rem;
  padding: 10px 0;
}

.count-box {
  flex: 1;
  text-align: center;
  background: var(--panel-2);
  border-radius: 10px;
  padding: 8px;
}

.count-box b {
  font-size: 1.6rem;
}

.count-box span {
  color: var(--muted);
  font-size: 0.8rem;
  margin-left: 2px;
}

.zero-btn {
  display: grid;
  gap: 2px;
  width: 100%;
  margin-top: 14px;
  padding: 14px;
  border-style: dashed;
}

.zero-btn em {
  font-style: normal;
  font-size: 0.75rem;
  color: var(--muted);
}

.result {
  font-size: 2.2rem;
  margin: 8px 0;
}

.result.win {
  color: var(--win);
}

.result.lose {
  color: var(--lose);
}

.final-score {
  font-size: 1.6rem;
  letter-spacing: 0.08em;
  margin: 8px 0 20px;
}

/* --- 手札バーとログ --- */

#footer {
  position: sticky;
  bottom: 0;
  background: var(--bg);
  padding: 10px 0 max(10px, env(safe-area-inset-bottom));
  margin-top: 16px;
}

/* --- 横に余裕のある画面（PC・タブレット） --- */

/* ロビーだけ2段組にする。理由: 1列のままだと1280×800のノートPCで
   「2人で対戦」が画面の下に隠れ、友達と遊ぶ導線が見えなくなるため。
   対戦中の画面は1列のまま（読む順序が変わると手触りが変わる）。 */
@media (min-width: 760px) {
  #screen-lobby {
    max-width: 880px;
  }

  #screen-lobby h1 {
    margin-top: 28px;
  }

  .lobby-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 32px;
    align-items: start;
  }

  .lobby-block {
    margin-bottom: 0;
  }
}

#hand-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--panel);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.85rem;
}

.hand-label {
  color: var(--muted);
  font-size: 0.75rem;
}

.hand-chip {
  flex: 1;
  text-align: center;
  color: var(--muted);
}

.hand-chip b {
  color: var(--text);
  font-size: 1.1rem;
  margin-left: 4px;
}

#btn-log {
  width: 100%;
  margin-top: 8px;
  font-size: 0.85rem;
}

#log-panel {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 15, 0.9);
  z-index: 20;
  overflow-y: auto;
}

.log-inner {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px;
}

.log-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: rgba(8, 10, 15, 0.95);
  padding: 8px 0;
}

.log-head h2 {
  margin: 0;
  font-size: 1.1rem;
}

.log-entry {
  background: var(--panel);
  border-left: 3px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 8px;
}

.log-entry.win {
  border-left-color: var(--win);
}

.log-entry.lose {
  border-left-color: var(--lose);
}

.log-round {
  font-size: 0.75rem;
  color: var(--muted);
}

.log-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.log-line span {
  color: var(--muted);
}

.log-result {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 4px;
}

/* --- 相手が出した手の集計 --- */

.tally {
  background: var(--panel-2);
  border-radius: 10px;
  padding: 8px 10px;
  margin: 10px 0 14px;
}

.tally-head {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.tally-head span {
  margin-left: 8px;
}

.tally-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.tally-cell {
  display: grid;
  gap: 1px;
  text-align: center;
  padding: 6px 2px;
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
}

.tally-cell.on {
  color: var(--text);
}

.tally-cell i {
  font-style: normal;
  font-size: 0.7rem;
  color: var(--muted);
}

.tally-cell b {
  font-size: 1rem;
}

.tally-cell em {
  font-style: normal;
  font-size: 0.7rem;
  color: var(--muted);
}

/* --- 対戦ログ：手を縦に読める表 --- */

.round-table {
  display: grid;
  gap: 8px;
}

.rt-row {
  display: grid;
  grid-template-columns: 4.2em repeat(3, 1fr);
  align-items: center;
  gap: 4px;
}

.rt-row > span {
  font-size: 0.75rem;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rt-row i {
  font-style: normal;
  text-align: center;
  font-size: 0.85rem;
  color: var(--line);
  padding: 3px 0;
  border-radius: 6px;
}

.rt-row i.on {
  color: var(--text);
  background: var(--panel-2);
  font-weight: 700;
}

.rt-head i {
  font-size: 0.7rem;
  color: var(--muted);
  padding: 0;
}

/* 見出しの列を、.rt-round の内側（枠3px + 余白10px）と揃える。 */
.rt-head {
  position: sticky;
  top: var(--log-head-h, 44px);
  background: rgba(8, 10, 15, 0.95);
  padding: 4px 10px 4px 13px;
  z-index: 1;
}

.rt-zero {
  grid-column: 2 / -1;
  color: var(--muted) !important;
  background: var(--panel-2);
  font-size: 0.75rem !important;
}

.rt-round {
  background: var(--panel);
  border-left: 3px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
}

.rt-round.win {
  border-left-color: var(--win);
}

.rt-round.lose {
  border-left-color: var(--lose);
}

.rt-title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--muted);
}

.rt-title em {
  font-style: normal;
}

/* --- ルール表示 --- */

/* いつでも押せるルールの入口。指で押せる大きさを確保する。 */
.help {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 !important;
  font-size: 0.95rem !important;
  border-radius: 999px;
  flex: none;
}

.sheet {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 15, 0.94);
  z-index: 28;
  overflow-y: auto;
}

.sheet[hidden] {
  display: none;
}

.sheet-inner {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px 16px 40px;
}

.sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: rgba(8, 10, 15, 0.97);
  padding: 8px 0;
}

.sheet-head h2 {
  margin: 0;
  font-size: 1.1rem;
}

.rules-section {
  background: var(--panel);
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: 10px;
}

.rules-section h3 {
  margin: 0 0 6px;
  font-size: 0.85rem;
  color: var(--accent);
}

.rules-section p,
.rules-section ul {
  margin: 0;
  font-size: 0.9rem;
}

.rules-section ul {
  padding-left: 1.1em;
}

.rules-section li + li {
  margin-top: 4px;
}

.rules-happenings {
  margin-top: 8px !important;
  color: var(--muted);
}

/* --- 決着後の答え合わせ --- */

.reveal-box {
  text-align: left;
  margin-top: 20px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.reveal-box h3 {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 8px;
  text-align: center;
}

#toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: #000;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.85rem;
  z-index: 30;
  max-width: 90vw;
  text-align: center;
}

/* --- 勝利条件の常時表示 --- */

.goal {
  display: block;
  font-size: 0.7rem;
  color: var(--accent);
  margin-top: 2px;
}

.hand-note {
  font-size: 0.7rem;
  color: var(--lose);
  white-space: nowrap;
}

/* --- ラウンド結果のポップアップ --- */

#result-popup {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 15, 0.88);
  z-index: 25;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

#result-popup[hidden] {
  display: none;
}

.popup-inner {
  width: 100%;
  max-width: 360px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 18px;
  text-align: center;
}

.popup-round {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.popup-title {
  font-size: 2.2rem;
  margin: 4px 0 16px;
  /* 決着(is-settled)までは中身を空にせず隠す。visibility なら高さが保たれ、
     手→結果の切り替わりでポップアップの縦幅が動いて答えが漏れない */
  visibility: hidden;
}

#result-popup.is-settled .popup-title {
  visibility: visible;
}

.popup-title.win {
  color: var(--win);
}

.popup-title.lose {
  color: var(--lose);
}

.popup-moves {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--panel-2);
  border-radius: 12px;
  padding: 12px 10px;
  opacity: 0;
}

/* リビール段階（is-revealed）で、両者の手を同時に出す */
#result-popup.is-revealed .popup-moves {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  #result-popup.is-revealed .popup-moves {
    animation: uj-reveal-fade 220ms ease;
  }
}

@keyframes uj-reveal-fade {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.popup-move {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.popup-move span {
  font-size: 0.7rem;
  color: var(--muted);
}

.popup-move b {
  font-size: 1.05rem;
}

.popup-vs {
  font-size: 0.75rem;
  color: var(--muted);
}

.popup-points {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 14px 0 16px;
  /* popup-title と同じ理由で、決着までは高さだけ保って隠す */
  visibility: hidden;
}

#result-popup.is-settled .popup-points {
  visibility: visible;
}

/* --- ログの見出しと選択済みの行 --- */

.log-section {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 18px 0 6px;
  font-weight: 600;
}

.log-section:first-child {
  margin-top: 4px;
}

.log-line.picked span {
  color: var(--accent);
}

.log-line.picked b {
  color: var(--accent);
}

.log-tag {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 8px;
  margin-right: 6px;
  font-size: 0.7rem;
}

.log-tag.picked {
  border-color: var(--accent);
  color: var(--accent);
}