:root {
  /* 底部安全區：Safari 模式照系統值（含浮動工具列）；獨立模式 iOS 27 會多留一段工具列空間，上限收到 40px */
  --safe-bottom: env(safe-area-inset-bottom);
  --table: #23613c;
  --bar: rgba(0, 0, 0, 0.24);
  --back: #2b57a8;
  --accent: #ffd54a;
}
:root[data-table='blue'] { --table: #234a73; }
:root[data-table='gray'] { --table: #2b2e33; }
:root[data-table='purple'] { --table: #45305f; }
:root[data-back='red'] { --back: #b03030; }
:root[data-back='black'] { --back: #333; }
:root[data-back='green'] { --back: #2a7a4a; }

/* 獨立模式（加入主畫面）：iOS 27 回報的底部安全區含工具列空間，收到 40px 就夠避開主畫面指示條 */
.standalone { --safe-bottom: min(env(safe-area-inset-bottom), 40px); }
@media (display-mode: standalone) {
  :root { --safe-bottom: min(env(safe-area-inset-bottom), 40px); }
}

/* iPhone Safari 無視 user-scalable=no，但會尊重 touch-action：
   pan-x pan-y 只允許捲動，雙指縮放與雙擊放大都關掉（manipulation 仍允許雙指縮放，對話框開著時就能放大、關掉後卻縮不回來）。
   touch-action 不會繼承，所以每個元素都設 */
* { box-sizing: border-box; touch-action: pan-x pan-y; }
html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--table);
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang TC', 'Noto Sans TC', 'Microsoft JhengHei', 'Segoe UI', sans-serif;
  -webkit-text-size-adjust: 100%;
}
body {
  position: fixed;
  inset: 0;
  overscroll-behavior: none;
  touch-action: pan-x pan-y;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
button { font-family: inherit; cursor: pointer; }
button:disabled { opacity: 0.4; cursor: default; }
.hidden { display: none !important; }

.screen { position: absolute; inset: 0; display: flex; flex-direction: column; }

/* ---- 頂部列 ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: calc(env(safe-area-inset-top) + 4px) calc(env(safe-area-inset-right) + 10px) 4px calc(env(safe-area-inset-left) + 8px);
  background: var(--bar);
}
.topbar h1 { font-size: 20px; margin: 0; flex: 1; display: flex; align-items: center; gap: 8px; }
.topbar .logo { width: 28px; height: 28px; border-radius: 7px; flex: none; }
button.icon {
  background: none;
  border: none;
  color: #fff;
  font-size: 24px;
  line-height: 1;
  padding: 4px 8px;
}
.title { display: flex; flex-direction: column; line-height: 1.15; flex: 1; min-width: 0; }
.title span:first-child { font-weight: 700; font-size: 16px; }
/* 副標含局號，太窄時截尾，完整局號在選單裡看 */
#g-sub { font-size: 12px; opacity: 0.75; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hud { margin-left: auto; display: flex; gap: 12px; font-variant-numeric: tabular-nums; font-size: 14px; opacity: 0.92; }
.no-timer #hud-time { display: none; }

/* ---- 首頁 ---- */
#game-list {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 12px calc(env(safe-area-inset-right) + 12px) 12px calc(env(safe-area-inset-left) + 12px);
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  align-content: start;
}
.gcard { background: rgba(255, 255, 255, 0.1); border-radius: 14px; padding: 14px; }
.gcard-main { cursor: pointer; }
.gcard-title { font-size: 20px; font-weight: 700; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.gcard-title .en { font-size: 13px; opacity: 0.7; font-weight: 400; }
.chip { font-size: 11px; background: var(--accent); color: #222; padding: 2px 8px; border-radius: 10px; font-weight: 700; }
.gcard-desc { font-size: 14px; opacity: 0.88; margin: 6px 0; line-height: 1.45; }
.gcard-stats { font-size: 13px; opacity: 0.75; }
.gcard-foot { display: flex; align-items: center; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
/* 按鈕組不換行、整組靠右；跟難度選項擠不下時整組換到下一行 */
.gcard-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; flex-wrap: nowrap; }
.seg { display: inline-flex; border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 8px; overflow: hidden; }
.seg button { background: none; border: none; color: inherit; padding: 6px 12px; font-size: 14px; }
.seg button.on { background: rgba(255, 255, 255, 0.3); font-weight: 700; }
.btn { background: rgba(255, 255, 255, 0.2); border: none; color: #fff; padding: 8px 14px; border-radius: 8px; font-size: 14px; }
.btn.primary { background: var(--accent); color: #222; font-weight: 700; }
/* 底部安全區本身已含 Safari 浮動工具列上方的留白，這裡再收緊一點讓頁尾更靠近底部 */
.home-foot {
  text-align: center;
  font-size: 12px;
  line-height: 1.35;
  opacity: 0.6;
  padding: 4px 0 max(4px, calc(var(--safe-bottom) - 12px));
}
.standalone .install-hint { display: none; }
@media (display-mode: standalone) {
  .install-hint { display: none; }
}

/* ---- 遊戲畫面 ---- */
.game-body { flex: 1; display: flex; flex-direction: column; min-height: 0; }
#table {
  flex: 1;
  position: relative;
  overflow: hidden;
  touch-action: none;
  margin: 0 env(safe-area-inset-right) 0 env(safe-area-inset-left);
}
#table * { touch-action: none; }
.actions {
  display: flex;
  justify-content: space-around;
  background: var(--bar);
  padding: 4px 0 calc(var(--safe-bottom) + 4px);
}
.actions button {
  background: none;
  border: none;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 22px;
  line-height: 1.1;
  padding: 4px 8px;
  min-width: 56px;
}
.actions button small { font-size: 11px; margin-top: 2px; opacity: 0.85; }
.actions button.holding { transform: scale(0.92); opacity: 0.7; transition: transform 0.6s ease; }
@media (orientation: landscape) {
  .game-body { flex-direction: row; }
  .actions {
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    padding: 6px calc(env(safe-area-inset-right) + 2px) calc(var(--safe-bottom) + 6px) 2px;
  }
  .actions button { min-width: 52px; padding: 4px 6px; }
  #table { margin-right: 0; }
  /* 慣用左手：動作列換到左邊，安全區內距也跟著換邊 */
  .hand-left .game-body { flex-direction: row-reverse; }
  .hand-left .actions { padding: 6px 2px calc(var(--safe-bottom) + 6px) calc(env(safe-area-inset-left) + 2px); }
  .hand-left #table { margin-left: 0; margin-right: env(safe-area-inset-right); }
}

/* ---- 無路可走橫幅 ---- */
.deadend {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px calc(env(safe-area-inset-right) + 10px) 6px calc(env(safe-area-inset-left) + 12px);
  background: #b03030;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}
.deadend span { flex: 1; }
.btn.small { padding: 6px 10px; font-size: 13px; }
.deadend .btn { background: rgba(255, 255, 255, 0.22); }
.deadend .btn.primary { background: var(--accent); color: #222; }

/* ---- 資料備份 ---- */
.modal-body textarea {
  width: 100%;
  font: 16px/1.4 ui-monospace, Menlo, Consolas, monospace; /* iPhone 對焦小於 16px 的輸入框會放大整頁 */
  padding: 8px;
  border: 1px solid #bbb;
  border-radius: 8px;
  resize: vertical;
  word-break: break-all;
}
/* 全頁關了文字選取（body 的 user-select: none），輸入欄位要開回來，iPhone 才能長按選取、全選、貼上 */
.modal-body textarea,
.modal-body input {
  -webkit-user-select: text;
  user-select: text;
  -webkit-touch-callout: default;
}
.row-btns { display: flex; align-items: center; gap: 10px; margin-top: 6px; }
.row-btns .btn,
.modal-body .btn { background: #eee; color: #222; }

/* ---- 牌堆 ---- */
.pile {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--cw);
  height: var(--ch);
  border-radius: calc(var(--cw) * 0.09);
  border: 2px dashed rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: calc(var(--cw) * 0.42);
}
.pile.ghost { border-color: transparent; }
/* 牌堆下方的數字（剩幾張、剩幾次重翻、收了幾串）：獨立一層、疊在所有牌之上，
   位置由 render.js 設在牌堆正下方；窄牌時字級至少 11px，太寬就往兩側溢出、保持置中 */
.pbadge {
  position: absolute;
  left: 0;
  top: max(3px, calc(var(--cw) * 0.05));
  width: var(--cw);
  display: flex;
  justify-content: center;
  white-space: nowrap;
  font-size: max(11px, calc(var(--cw) * 0.22));
  line-height: 1.1;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
  pointer-events: none;
  z-index: 900; /* 高於所有牌（最多約 300），低於拖曳中的牌（1000 起） */
}
.pbadge:empty { display: none; }
.pile.kind-stock.has-cards .plabel { visibility: hidden; }

/* ---- 附加面板（金字塔湊 13 小表） ---- */
.extra { position: absolute; left: 0; top: 0; pointer-events: none; z-index: 2; }
.cheat {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  padding: 4px 5px 5px;
  color: rgba(255, 255, 255, 0.9);
  font-size: calc(var(--cw) * 0.27);
  line-height: 1.35;
  font-variant-numeric: tabular-nums;
}
.cheat-title { font-size: 80%; opacity: 0.7; text-align: center; margin-bottom: 2px; }
.cheat-row { display: flex; justify-content: center; align-items: baseline; gap: 4px; border-radius: 4px; padding: 0 3px; }
.cheat-row b { font-weight: 700; }
.cheat-row i { font-style: normal; opacity: 0.45; font-size: 85%; }
.cheat-row.active { background: var(--accent); color: #222; }
.cheat-row.active i { opacity: 0.6; }
.cols2 .cheat { display: grid; grid-template-columns: 1fr 1fr; column-gap: 4px; }
.cols2 .cheat-title { grid-column: 1 / -1; }
.cols2 .cheat-row[data-ranks='13'] { grid-column: 1 / -1; }

/* ---- 牌 ---- */
.card {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--cw);
  height: var(--ch);
  border-radius: calc(var(--cw) * 0.09);
  background: #fff;
  border: 1px solid #9a9a9a;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  transition: transform 0.22s ease;
  will-change: transform;
  touch-action: none;
}
.no-anim .card { transition: none; }
.card.buried { box-shadow: none; }
.card.dragging { transition: none; box-shadow: 0 8px 18px rgba(0, 0, 0, 0.45); }
.card .face { position: absolute; inset: 0; }
.card .corner {
  position: absolute;
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 0.08em;
  line-height: 1;
  font-weight: 700;
  font-size: calc(var(--cw) * 0.3);
  white-space: nowrap;
}
.card .corner b { font-weight: 700; letter-spacing: -0.04em; }
.card .corner i { font-style: normal; font-size: 85%; }
.card .corner.tl { top: 4%; left: 6%; }
.card .corner.br { bottom: 4%; right: 6%; transform: rotate(180deg); }
.card .mid {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(var(--cw) * 0.55);
  opacity: 0.9;
}
.card.red { color: #c8242c; }
.card.black { color: #1a1a1a; }
.card .back {
  display: none;
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-color: var(--back);
  background-image: repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.14) 0 3px, transparent 3px 7px);
  border: calc(var(--cw) * 0.06) solid #fff;
}
.card.down .face { display: none; }
.card.down .back { display: block; }
.big-font .card .corner { font-size: calc(var(--cw) * 0.4); }
.big-font .card .mid { font-size: calc(var(--cw) * 0.45); opacity: 0.5; }
/* 窄牌（直向的蜘蛛、新接龍）：只留左上角標並放大 */
.narrow .card .corner.br { display: none; }
.narrow .card .corner.tl { top: 3%; left: 5%; font-size: calc(var(--cw) * 0.42); }
.narrow .card .mid { font-size: calc(var(--cw) * 0.45); opacity: 0.5; }

/* 疊牌欄裡不屬於最上面那串順序牌的面朝上牌蓋一層淡黑，一眼看出哪一段能整串搬（蜘蛛、新接龍）。
   用 ::after 疊一層而不是 filter，才不會把提示與選取的外光一起調暗；inset -1px 連邊框一起蓋 */
.card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: rgba(0, 0, 0, 0.18);
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
}
.card.dim:not(.down)::after { opacity: 1; }

.card.selected { box-shadow: 0 0 0 3px #4fc3f7, 0 0 12px 3px rgba(79, 195, 247, 0.8); }
.card.hint, .pile.hint { animation: hintglow 1.5s ease; }
@keyframes hintglow {
  0%, 100% { box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5); }
  15%, 85% { box-shadow: 0 0 0 3px var(--accent), 0 0 14px 4px rgba(255, 213, 74, 0.85); }
}
.card.nudge { animation: nudge 0.35s ease; }
@keyframes nudge {
  0%, 100% { margin-left: 0; }
  25% { margin-left: -5px; }
  75% { margin-left: 5px; }
}

/* ---- 對話框 ---- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5000;
  padding: 16px;
}
.modal {
  background: #fff;
  color: #222;
  border-radius: 16px;
  max-width: 440px;
  width: 100%;
  max-height: 88vh;
  max-height: 88dvh; /* iOS Safari 工具列會吃掉 vh，支援的瀏覽器改用動態視口 */
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}
.modal h2 { margin: 0; padding: 16px 18px 6px; font-size: 19px; }
.modal-body { padding: 4px 18px 12px; overflow-y: auto; -webkit-overflow-scrolling: touch; font-size: 15px; line-height: 1.55; }
.modal-body h3 { font-size: 15px; margin: 12px 0 4px; color: #2f7d4f; }
.modal-body p { margin: 4px 0; }
.modal-body ul { padding-left: 20px; margin: 4px 0; }
.modal-body li { margin: 3px 0; }
.modal-body input[type='number'],
.modal-body input.deal-input {
  width: 100%;
  font-size: 18px; /* 16px 以上，iPhone 對焦才不會放大 */
  padding: 10px;
  border: 1px solid #bbb;
  border-radius: 8px;
  margin-top: 8px;
  font-variant-numeric: tabular-nums;
}
.modal-body input.invalid,
.modal-body textarea.invalid { border-color: #c8242c; outline-color: #c8242c; }
.field-err { color: #c8242c; font-size: 13px; min-height: 1.3em; margin: 6px 0 0; }
.modal-buttons {
  display: flex;
  gap: 8px;
  padding: 10px 18px 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.modal-buttons .btn { background: #eee; color: #222; padding: 10px 16px; font-size: 15px; }
.modal-buttons .btn.primary { background: #2f7d4f; color: #fff; }
.menu-list button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-bottom: 1px solid #eee;
  padding: 13px 4px;
  font-size: 16px;
  color: #222;
}
.menu-list button:last-child { border-bottom: none; }
.setting-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid #eee; gap: 10px; }
.setting-row .seg { border-color: #bbb; color: #222; }
.setting-row .seg button.on { background: #2f7d4f; color: #fff; }
.note { font-size: 13px; color: #777; margin-top: 10px; }
.deal-note { margin: 0 0 6px; }
.deal-code {
  margin: 10px 0 4px;
  text-align: center;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 1px;
  font-variant-numeric: tabular-nums;
  -webkit-user-select: text;
  user-select: text;
  -webkit-touch-callout: default;
}
.deal-copy-msg { text-align: center; margin: 0 0 6px; min-height: 1.3em; }
.switch { position: relative; display: inline-block; width: 50px; height: 30px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span { position: absolute; inset: 0; background: #ccc; border-radius: 15px; transition: 0.2s; }
.switch span::before { content: ''; position: absolute; width: 24px; height: 24px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: 0.2s; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3); }
.switch input:checked + span { background: #2f7d4f; }
.switch input:checked + span::before { transform: translateX(20px); }
table.stats { width: 100%; border-collapse: collapse; font-size: 14px; }
table.stats td { padding: 5px 4px; border-bottom: 1px solid #f0f0f0; }
table.stats td:nth-child(odd) { color: #777; }
table.stats td:nth-child(even) { font-weight: 600; }
.win-stats div { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid #eee; }
.win-stats span { color: #777; }
.win-stats em { font-style: normal; color: #c8242c; font-size: 12px; margin-left: 4px; }

/* ---- 狀態列取色 ---- */
/* iOS 26 起獨立模式的狀態列顏色取樣最上方 fixed 元素的 background-color（不再讀 theme-color）。
   放一條 1px 的 fixed 元素在頂端，顏色與標題列相同，所以看不見；在對話框底下、不吃點擊 */
#statusbar-tint {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  pointer-events: none;
  z-index: 10;
  background-color: var(--table);
}

/* ---- 提示訊息 ---- */
#toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--safe-bottom) + 84px);
  transform: translateX(-50%);
  background: rgba(20, 20, 20, 0.92);
  color: #fff;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 15px;
  z-index: 6000;
  display: flex;
  gap: 12px;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  max-width: 90vw;
}
#toast.show { opacity: 1; pointer-events: auto; }
#toast button { background: var(--accent); color: #222; border: none; padding: 6px 12px; border-radius: 8px; font-weight: 700; font-size: 14px; }
@media (orientation: landscape) {
  #toast { bottom: 16px; }
}