:root {
  --tw: 52px;
  --bg: #10151b;
  --panel: #182029;
  --panel2: #1f2a35;
  --line: #2b3947;
  --txt: #e8eef5;
  --dim: #93a3b3;
  --green: #2f9e5f;
  --red: #e04b4b;
  --gold: #e8b64c;
  --blue: #3f8fd6;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; overscroll-behavior: none; }
body {
  background: radial-gradient(1200px 700px at 50% -10%, #1b2a33 0%, var(--bg) 60%);
  color: var(--txt);
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
#app {
  max-width: 1180px; margin: 0 auto;
  padding: 10px 12px 20px;
  padding-left: max(12px, env(safe-area-inset-left));
  padding-right: max(12px, env(safe-area-inset-right));
  padding-bottom: max(20px, env(safe-area-inset-bottom));
  display: flex; flex-direction: column;
  min-height: 100vh; min-height: 100dvh;
}

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 14px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; margin-bottom: 12px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.logo {
  width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(160deg, #3f8fd6, #1b5fa8); font-weight: 700; font-size: 20px; color: #fff;
}
.title { font-size: 16px; font-weight: 700; letter-spacing: .5px; }
.sub { font-size: 11px; color: var(--dim); margin-top: 2px; }
.hud { display: flex; gap: 14px; margin-left: auto; }
.hud-item { text-align: center; min-width: 58px; }
.hud-item span { display: block; font-size: 11px; color: var(--dim); }
.hud-item b { font-size: 17px; font-variant-numeric: tabular-nums; }
.hud-item b.good { color: var(--green); }
.topbtns { display: flex; gap: 6px; }

.btn {
  background: var(--panel2); color: var(--txt); border: 1px solid var(--line);
  padding: 7px 13px; border-radius: 8px; font-size: 13px; cursor: pointer; transition: .15s;
}
.btn:hover { background: #2a3745; border-color: #3d5163; }
.btn.primary { background: linear-gradient(160deg, #3f8fd6, #1b5fa8); border-color: #1b5fa8; }
.btn.primary:hover { filter: brightness(1.12); }
.btn.danger { color: #ffb4b4; border-color: #5a2b2b; }
.btn.danger:hover { background: #3a2020; }

/* ---------- 牌桌 ---------- */
.board { display: flex; flex-direction: column; gap: 10px; flex: 1 1 auto; min-height: 0; }
.table {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto 1fr auto;
  gap: 8px;
  background:
    radial-gradient(700px 380px at 50% 40%, #1e5c3f 0%, #143d29 70%, #0f2e20 100%);
  border: 1px solid var(--line); border-radius: 14px; padding: 12px;
  flex: 1 1 auto; min-height: 240px; max-height: 58vh;
  overflow: hidden;
}
.seat-top { grid-column: 1 / 4; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.seat-left { grid-column: 1; grid-row: 2; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.center { grid-column: 2; grid-row: 2; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }
.seat-right { grid-column: 3; grid-row: 2; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.seat-bottom { grid-column: 1 / 4; grid-row: 3; display: flex; justify-content: center; }

.seat-label { font-size: 11px; color: #9fd8b8; letter-spacing: 1px; }
.seat-count { display: none; font-size: 10px; color: #cfe9da; margin-left: 4px; font-weight: 400; }
.row-hand { display: flex; gap: 2px; flex-wrap: wrap; justify-content: center; max-width: 640px; }
.col-hand { display: flex; flex-direction: column; gap: 2px; }
.row-hand .tile, .col-hand .tile { width: calc(var(--tw) * 0.5); height: calc(var(--tw) * 0.7); }
.river {
  display: flex; flex-wrap: wrap; gap: 2px; justify-content: center;
  max-width: 620px; min-height: 26px; align-content: flex-start;
}
.seat-top .river { max-width: 520px; margin-top: 3px; }
.rv-left, .rv-right { max-width: 132px; }
.seat-left, .seat-right { justify-content: flex-start; }

/* ---------- 牌 ---------- */
.tile { width: var(--tw); height: calc(var(--tw) * 1.4); flex: none; line-height: 0; }
.tile svg { width: 100%; height: 100%; display: block; }
.tile.tiny { width: calc(var(--tw) * 0.46); height: calc(var(--tw) * 0.64); }
.tile.small { width: calc(var(--tw) * 0.62); height: calc(var(--tw) * 0.87); }
.tile.tiny.last { outline: 2px solid var(--gold); outline-offset: 1px; border-radius: 4px; }

.phase { font-size: 13px; color: #cfe9da; background: rgba(0,0,0,.25); padding: 4px 12px; border-radius: 20px; }
.timer { width: 190px; text-align: center; }
.timer-text { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--gold); }
.timer-track { height: 5px; background: rgba(0,0,0,.4); border-radius: 3px; overflow: hidden; margin-top: 3px; }
.timer-fill { height: 100%; width: 100%; background: var(--green); transition: width .04s linear; }
.timer-fill.warn { background: var(--gold); }
.timer-fill.danger { background: var(--red); }

/* ---------- 信息 / 反馈 ---------- */
.info-bar, .feedback {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 12px; font-size: 13px; min-height: 40px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.info-bar sub { font-size: 10px; color: var(--dim); margin-left: 1px; }
.tag { background: var(--panel2); border: 1px solid var(--line); border-radius: 6px; padding: 2px 8px; font-size: 12px; }
.tag.good { color: #7fe0a6; border-color: #2c6b46; background: #16352a; }
.tag.warn { color: #f0c46a; border-color: #6b5a2c; background: #352d16; }
.dim { color: var(--dim); }
.small { font-size: 12px; }

.feedback { gap: 18px; }
.feedback.ok { border-color: #2c6b46; }
.feedback.bad { border-color: #6b3a3a; background: #241a1a; }
.feedback.timeout { border-color: #6b5a2c; background: #2a2416; }
.fb-item { display: flex; align-items: baseline; gap: 6px; }
.fb-item i { font-style: normal; font-size: 11px; color: var(--dim); }
.fb-item b { font-size: 15px; }
.fb-item em { font-style: normal; font-size: 11px; color: var(--dim); }
.fb-item.ok b { color: #7fe0a6; }
.fb-item.bad b { color: #ff9c9c; }

/* ---------- 我的区域 ---------- */
.myarea { display: flex; flex-direction: column; gap: 8px; align-items: center; }
.melds { display: flex; gap: 10px; min-height: 4px; }
.meld { display: flex; gap: 1px; padding-right: 8px; border-right: 2px solid var(--line); }
.hand { display: flex; gap: 3px; flex-wrap: wrap; justify-content: center; }
.my-tile { cursor: default; transition: transform .12s; filter: drop-shadow(0 3px 4px rgba(0,0,0,.45)); }
.hand.clickable .my-tile { cursor: pointer; }
@media (hover: hover) {
  .hand.clickable .my-tile:hover { transform: translateY(-10px); }
}
.my-tile.drawn { margin-left: 16px; }
.my-tile.drawn::after {
  content: ''; position: absolute;
}
.action-bar { display: flex; gap: 8px; min-height: 34px; }
.act-btn {
  padding: 8px 20px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--panel2); color: var(--txt); font-size: 14px; font-weight: 600; cursor: pointer;
}
.act-btn:hover { filter: brightness(1.2); }
.act-btn.win { background: linear-gradient(160deg, #e04b4b, #a01f1f); border-color: #a01f1f; }
.act-btn.pon { background: linear-gradient(160deg, #3f8fd6, #1b5fa8); border-color: #1b5fa8; }
.act-btn.kan { background: linear-gradient(160deg, #2f9e5f, #16663a); border-color: #16663a; }
.act-btn.pass { background: #2a3745; }

/* ---------- 牌效快问 ---------- */
.drill { display: none; }
body.mode-drill .table,
body.mode-drill .info-bar,
body.mode-drill .feedback,
body.mode-drill .myarea { display: none; }
body.mode-drill .drill {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: radial-gradient(700px 380px at 50% 30%, #1e5c3f 0%, #143d29 70%, #0f2e20 100%);
  border: 1px solid var(--line); border-radius: 14px; padding: 16px; min-height: 320px;
}
.drill-head {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap; justify-content: center; width: 100%;
}
.drill-q { font-size: 14px; }
.drill-q b { color: var(--gold); }
.drill-stats { font-size: 12px; color: #cfe9da; }
.drill-stats b { color: #fff; }
.small-btn { padding: 5px 10px; font-size: 12px; }
.drill-timer { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--gold); }
.drill-timer.danger { color: var(--red); }
.drill-hand.clickable .my-tile { cursor: pointer; }
@media (hover: hover) {
  .drill-hand.clickable .my-tile:hover { transform: translateY(-10px); }
}
.drill-hand .my-tile { transition: transform .12s; filter: drop-shadow(0 3px 4px rgba(0,0,0,.45)); }
.my-tile.mark-best { outline: 3px solid var(--gold); border-radius: 6px; }
.my-tile.mark-mine { outline: 3px solid var(--red); border-radius: 6px; }
.drill-fb {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 9px 14px;
  font-size: 13px; text-align: center; min-height: 38px; display: flex; align-items: center; justify-content: center;
}
.drill-fb.ok { border-color: #2c6b46; background: #16301f; }
.drill-fb.bad { border-color: #6b3a3a; background: #2a1a1a; }
.combo { color: var(--gold); font-weight: 700; }
.drill-table { width: 100%; max-width: 640px; max-height: 34vh; overflow: auto; }
.drill-btns { display: flex; gap: 8px; }
table.review tr.mine td { color: #ffb4b4; }
table.review tr.best td { color: #7fe0a6; }

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed; inset: 0; background: rgba(5,8,12,.72); display: none;
  align-items: center; justify-content: center; z-index: 50; padding: 16px;
}
.modal.show { display: flex; }
.modal-box {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px; width: 100%; max-width: 420px; max-height: 86vh; overflow: auto;
}
.modal-box.wide { max-width: 620px; }
.modal-box h3 { margin: 0 0 14px; font-size: 17px; }
.modal-box h3.win { color: #7fe0a6; }
.modal-box h3.lose { color: #ff9c9c; }
.modal-btns { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.form-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; font-size: 13px; }
.form-row select, .form-row input { background: var(--panel2); color: var(--txt); border: 1px solid var(--line); border-radius: 7px; padding: 6px 9px; }
.form-row select { min-width: 190px; }
.help p, .help li { font-size: 13px; line-height: 1.7; color: #cfdae6; }
.help ul { padding-left: 20px; }

.res-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(88px, 1fr)); gap: 8px; margin-bottom: 12px; }
.res-grid > div {
  background: var(--panel2); border: 1px solid var(--line); border-radius: 9px; padding: 8px; text-align: center;
}
.res-grid span { display: block; font-size: 11px; color: var(--dim); }
.res-grid b { font-size: 17px; }
.grade-S { color: var(--gold); } .grade-A { color: #7fe0a6; }
.grade-B { color: var(--blue); } .grade-C { color: var(--dim); } .grade-D { color: #ff9c9c; }
.fan-line { font-size: 13px; margin-bottom: 10px; }
.fan { display: inline-block; background: #16352a; border: 1px solid #2c6b46; color: #7fe0a6; border-radius: 6px; padding: 2px 8px; margin: 2px 4px 2px 0; font-size: 12px; }
table.review { width: 100%; border-collapse: collapse; font-size: 12px; }
table.review th, table.review td { border-bottom: 1px solid var(--line); padding: 5px 6px; text-align: center; }
table.review th { color: var(--dim); font-weight: 500; }
table.review tr.bad td { color: #ff9c9c; }

/* ---------- 横屏提示条 ---------- */
.rotate-tip { display: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 820px) {
  :root { --tw: 40px; }
  .hud { margin-left: 0; }
  .topbar { gap: 10px; }
  .rv-left, .rv-right { max-width: 110px; }
  .table { padding: 8px; }
}

/* 手机竖屏: 一屏放下, 牌自动缩小 */
@media (orientation: portrait) and (max-width: 560px) {
  :root { --tw: 23px; }
  #app { padding: 6px 8px 10px; }
  .sub { display: none; }
  .topbar { padding: 6px 10px; gap: 8px; margin-bottom: 8px; }
  .logo { width: 28px; height: 28px; font-size: 16px; border-radius: 7px; }
  .title { font-size: 14px; }
  .hud { gap: 10px; }
  .hud-item { min-width: 44px; }
  .hud-item b { font-size: 15px; }
  .topbtns { width: 100%; justify-content: space-between; }
  .btn { padding: 8px 10px; font-size: 12px; min-height: 38px; }
  .board { gap: 6px; }
  .table { padding: 6px; gap: 4px; min-height: 220px; max-height: 46vh; }
  .timer { width: 170px; }
  .timer-text { font-size: 22px; }
  .phase { font-size: 12px; }
  .drill-table { max-height: 26vh; }
  .row-hand .tile, .col-hand .tile { width: 15px; height: 21px; }
  .col-hand .tile:nth-child(n + 8) { display: none; }
  .tile.tiny { width: 15px; height: 21px; }
  .river { gap: 1px; max-width: 100%; }
  .seat-top .river { max-width: 300px; }
  .rv-left, .rv-right { max-width: 96px; }
  .info-bar, .feedback { padding: 6px 8px; min-height: 32px; font-size: 11px; gap: 10px; }
  .fb-item b { font-size: 13px; }
  .myarea { gap: 5px; align-items: stretch; }
  .hand { gap: 2px; }
  .act-btn { padding: 9px 16px; font-size: 14px; min-height: 42px; }
  .action-bar { min-height: 42px; }
  .rotate-tip { display: flex; }
}

/* 手机横屏: 一屏看全牌桌 */
@media (orientation: landscape) and (max-height: 600px) {
  :root { --tw: 30px; }
  #app { padding: 3px 8px 5px; padding-left: max(8px, env(safe-area-inset-left)); padding-right: max(8px, env(safe-area-inset-right)); }
  .board { gap: 4px; }
  .topbar { padding: 2px 10px; gap: 10px; margin-bottom: 4px; flex-wrap: nowrap; }
  .logo { width: 24px; height: 24px; font-size: 14px; border-radius: 6px; }
  .title { font-size: 13px; }
  .sub { display: none; }
  .hud { gap: 12px; margin-left: auto; }
  .hud-item { min-width: 42px; }
  .hud-item span { font-size: 10px; }
  .hud-item b { font-size: 15px; }
  .topbtns { gap: 4px; }
  .btn { padding: 4px 9px; font-size: 12px; min-height: 28px; }
  .table { padding: 4px 6px; gap: 3px; min-height: 0; border-radius: 10px; }
  .seat-label { font-size: 10px; }
  .seat-count { display: inline; }
  .row-hand .tile, .col-hand .tile { width: 16px; height: 22px; }
  .seat-top .river { max-height: 24px; overflow: hidden; }
  /* 横屏: 上/下家手牌改为横排, 避免竖排撑高牌桌 */
  .col-hand { flex-direction: row; flex-wrap: wrap; justify-content: center; max-width: 250px; gap: 1px; }
  .tile.tiny { width: 19px; height: 27px; }
  .river { gap: 1px; }
  .seat-top .river { max-width: 420px; }
  .rv-left, .rv-right { max-width: 250px; }
  .phase { font-size: 11px; padding: 2px 8px; }
  .timer { width: 140px; }
  .timer-text { font-size: 16px; }
  .info-bar, .feedback { padding: 3px 10px; min-height: 24px; font-size: 11.5px; gap: 12px; }
  .fb-item b { font-size: 13px; }
  .myarea { gap: 3px; }
  .hand { gap: 2px; }
  .melds { gap: 6px; }
  .action-bar { min-height: 34px; }
  .act-btn { padding: 5px 16px; font-size: 13px; min-height: 34px; }
  .modal-box { padding: 14px; max-height: 92vh; }
  body.mode-drill .drill { padding: 10px; min-height: 0; gap: 6px; }
  .drill-hand { flex-wrap: wrap; }
  .drill-table { max-height: 24vh; }
  .drill-fb { min-height: 30px; font-size: 12px; }
}

/* 极窄横屏(如 667x375 的小屏 iPhone) */
@media (orientation: landscape) and (max-height: 430px) {
  :root { --tw: 28px; }
  .topbar { padding: 2px 8px; }
  .btn { min-height: 26px; padding: 3px 7px; font-size: 11px; }
  .table { padding: 3px 5px; gap: 2px; }
  .row-hand .tile, .col-hand .tile { width: 14px; height: 20px; }
  .col-hand { max-width: 210px; }
  .tile.tiny { width: 16px; height: 22px; }
  .seat-top .river { max-height: 22px; }
  .info-bar, .feedback { min-height: 22px; font-size: 11px; padding: 2px 8px; }
  .act-btn { padding: 5px 12px; min-height: 32px; }
  .phase { font-size: 10px; }
  .timer { width: 120px; }
  .timer-text { font-size: 15px; }
}

/* 超矮横屏(可视高度 < 400, 如 Android 全面屏横屏) */
@media (orientation: landscape) and (max-height: 400px) {
  :root { --tw: 24px; }
  .topbar { padding: 1px 8px; margin-bottom: 3px; }
  .logo { width: 20px; height: 20px; font-size: 12px; }
  .title { font-size: 12px; }
  .btn { min-height: 24px; padding: 3px 6px; font-size: 11px; }
  .hud-item b { font-size: 14px; }
  .board { gap: 3px; }
  .table { padding: 2px 5px; gap: 2px; }
  .seat-label { font-size: 9px; }
  .row-hand .tile, .col-hand .tile { width: 13px; height: 18px; }
  .tile.tiny { width: 15px; height: 21px; }
  .seat-top .river { max-height: 18px; }
  .rv-left, .rv-right { max-height: 40px; overflow: hidden; }
  .phase { font-size: 10px; padding: 1px 6px; }
  .timer { width: 110px; }
  .timer-text { font-size: 14px; }
  .info-bar, .feedback { min-height: 18px; font-size: 10.5px; padding: 1px 8px; gap: 10px; }
  .fb-item b { font-size: 12px; }
  .myarea { gap: 2px; }
  .action-bar { min-height: 30px; }
  .act-btn { padding: 4px 12px; min-height: 30px; font-size: 12px; }
  /* 快问模式同样压缩到一屏 */
  body.mode-drill .drill { padding: 6px 8px; gap: 4px; }
  .drill-head { gap: 8px; }
  .drill-timer { font-size: 15px; }
  .drill-fb { min-height: 26px; font-size: 11px; padding: 3px 8px; }
  .drill-table { max-height: 16vh; }
  .drill-btns .btn { min-height: 28px; padding: 4px 10px; font-size: 11px; }
}

/* 横屏提示条样式 */
@media (orientation: portrait) and (max-width: 560px) {
  .rotate-tip {
    align-items: center; gap: 8px;
    background: #16352a; border: 1px solid #2c6b46; border-radius: 9px;
    padding: 6px 10px; margin-bottom: 8px; font-size: 11.5px; color: #bfe8d0;
  }
  .rt-icon { font-size: 15px; }
  .rt-text { flex: 1; }
  .rt-close {
    background: none; border: none; color: #7fa892; font-size: 14px; cursor: pointer;
    padding: 2px 4px; min-height: 28px;
  }
}
body.rt-hidden .rotate-tip { display: none !important; }

/* 补充：接近最优样式 */
.drill-fb.warn { border-color: #6b5a2c; background: #2a2416; }
.fb-item.warn b { color: var(--gold); }

/* 快问: 表格滚动提示 / 全屏按钮 */
.scroll-hint { text-align: center; font-size: 11px; margin-bottom: 2px; }
.rt-fs {
  background: #2c6b46; border: 1px solid #3d8a5c; color: #d8f5e4;
  border-radius: 7px; font-size: 11.5px; padding: 3px 9px; min-height: 26px; cursor: pointer;
}
.rt-fs:hover { background: #357c53; }