:root {
  --bg: #11151b;
  --panel: #191f27;
  --line: #29313c;
  --text: #e9edf2;
  --muted: #8a95a4;
  --grass: #5d8a3a;
  --grass-alt: #568236;
  --lake: #2c6a8c;
  --frame: #3a2a1b;
  --gold: #f2c14e;
  --red-1: #d4493a;
  --red-2: #a5301f;
  --blue-1: #3d6fbd;
  --blue-2: #234d8c;
  --win: #56c271;
  --lose: #e0604f;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: radial-gradient(1200px 600px at 70% -10%, #1d2633, var(--bg));
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
[hidden] { display: none !important; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 24px; border-bottom: 1px solid var(--line);
}
.brand { font-weight: 800; letter-spacing: .12em; color: var(--text); text-decoration: none; }
.link { background: none; border: 0; color: var(--muted); font: inherit; cursor: pointer; }
.link:hover { color: var(--text); }

main { max-width: 1120px; margin: 0 auto; padding: 28px 16px 48px; }

.btn {
  font: inherit; font-weight: 600; color: var(--text);
  background: #232b36; border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 18px; cursor: pointer; transition: background .15s, transform .05s;
}
.btn:hover { background: #2b3542; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .link:focus-visible, input:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.btn.primary { background: linear-gradient(var(--red-1), var(--red-2)); border-color: #c13c2c; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 12px; font-size: 14px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.muted { color: var(--muted); }

/* ---------- home ---------- */
#home {
  display: grid; grid-template-columns: 1fr minmax(0, 480px); gap: 56px;
  align-items: center; min-height: calc(100vh - 160px);
}
h1 { font-size: clamp(44px, 7vw, 76px); margin: 0; letter-spacing: .06em; line-height: 1.05; }
.actions { display: flex; flex-direction: column; gap: 10px; max-width: 300px; margin: 32px 0 14px; }
.join { display: flex; gap: 8px; max-width: 300px; }
.join input {
  flex: 1; min-width: 0; font: inherit; letter-spacing: .2em; text-transform: uppercase;
  color: var(--text); background: #0e1217; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
}
.hero-board { pointer-events: none; transform: perspective(1200px) rotateX(18deg); box-shadow: 0 30px 60px rgba(0,0,0,.5); }
@media (max-width: 820px) {
  #home { grid-template-columns: 1fr; gap: 32px; min-height: 0; }
}

/* ---------- board ---------- */
#game { display: grid; grid-template-columns: minmax(0, 660px) minmax(260px, 1fr); gap: 24px; align-items: start; }
@media (max-width: 920px) { #game { grid-template-columns: 1fr; } }

.board-wrap { position: relative; }
.board {
  container-type: inline-size;
  display: grid; grid-template-columns: repeat(10, 1fr);
  width: 100%; aspect-ratio: 1;
  border: 8px solid var(--frame); border-radius: 8px;
  background: var(--grass); user-select: none;
}
.cell { position: relative; display: flex; align-items: center; justify-content: center; background: var(--grass); }
.cell.alt { background: var(--grass-alt); }
.cell.lake {
  background:
    repeating-linear-gradient(170deg, rgba(255,255,255,.07) 0 3px, transparent 3px 11px),
    var(--lake);
}
#board .cell:not(.lake) { cursor: pointer; }
.cell.setup { box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); }
.cell.last { box-shadow: inset 0 0 0 3px rgba(242,193,78,.55); }
.cell.target::after {
  content: ""; position: absolute; width: 30%; height: 30%; border-radius: 50%;
  background: rgba(255,255,255,.5); pointer-events: none;
}
.cell.target.attack::after {
  width: 92%; height: 92%; background: none; border: 3px solid var(--gold); border-radius: 8px;
}

.piece {
  position: relative; display: flex; align-items: center; justify-content: center;
  border-radius: 6px; color: #fff; font-weight: 800; line-height: 1;
  font-variant-numeric: tabular-nums;
  box-shadow: inset 0 -3px 0 rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.2), 0 2px 4px rgba(0,0,0,.35);
}
.cell .piece { width: 86%; height: 86%; font-size: 4.2cqw; transition: transform .12s; }
.piece svg { width: 62%; height: 62%; }
.piece.red { background: linear-gradient(var(--red-1), var(--red-2)); }
.piece.blue { background: linear-gradient(var(--blue-1), var(--blue-2)); }
.piece.hidden { background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.09) 0 4px, transparent 4px 9px), linear-gradient(var(--blue-1), var(--blue-2)); }
.piece.red.hidden { background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.09) 0 4px, transparent 4px 9px), linear-gradient(var(--red-1), var(--red-2)); }
.piece.exposed::after {
  content: ""; position: absolute; top: 8%; right: 8%; width: 16%; height: 16%;
  border-radius: 50%; background: var(--gold);
}
.cell.selected .piece { outline: 3px solid var(--gold); transform: translateY(-3px) scale(1.04); }

.piece.mini { width: 26px; height: 26px; font-size: 13px; border-radius: 5px; flex: none; }
.piece.big { width: 96px; height: 96px; font-size: 44px; border-radius: 12px; }
.piece.lost { opacity: .35; filter: grayscale(.9); }

.combat {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(8, 10, 14, .45); pointer-events: none; border-radius: 8px;
  animation: fade 1.2s ease forwards;
}
.duel { display: flex; align-items: center; gap: 18px; animation: pop .25s ease; }
.vs { color: var(--muted); font-weight: 700; }
.duel .vs { font-size: 28px; color: var(--text); }
@keyframes fade { 0%, 75% { opacity: 1; } 100% { opacity: 0; } }
@keyframes pop { from { transform: scale(.8); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- panel ---------- */
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px; display: flex; flex-direction: column; gap: 16px;
}
.status { font-size: 20px; font-weight: 800; padding-left: 12px; border-left: 4px solid var(--line); }
.status.mine[data-side="red"] { border-color: var(--red-1); }
.status.mine[data-side="blue"] { border-color: var(--blue-1); }
.room-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.room-code { font-size: 26px; font-weight: 800; letter-spacing: .25em; color: var(--gold); }
.setup { display: flex; flex-direction: column; gap: 10px; }
.hint { margin: 0; color: var(--muted); font-size: 14px; }
.tallies { display: flex; flex-direction: column; gap: 10px; }
.tally { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px 4px; }
.chip { display: flex; align-items: center; gap: 4px; font-size: 13px; color: var(--muted); }
.chip.out { opacity: .3; }
.log {
  list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px;
  max-height: 210px; overflow-y: auto; scrollbar-color: var(--line) transparent; scrollbar-width: thin;
}
.log:empty { display: none; }
.log li { display: flex; align-items: center; gap: 8px; }

/* ---------- dialogs ---------- */
.dialog {
  background: var(--panel); color: var(--text); border: 1px solid var(--line);
  border-radius: 16px; padding: 24px; max-width: min(520px, 92vw);
}
.dialog::backdrop { background: rgba(5, 7, 10, .6); }
.dialog h2 { margin: 0 0 12px; }
.rules { padding-left: 20px; margin: 0 0 16px; line-height: 1.7; }
.rank-table { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 18px; }
.rank-row { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.result { text-align: center; min-width: 280px; }
.result h2 { font-size: 40px; }
.result h2.win { color: var(--win); }
.result h2.lose { color: var(--lose); }
.result p { color: var(--muted); margin: 0 0 20px; }
.result .row { justify-content: center; }

.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: #0b0e12; border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 16px; box-shadow: 0 10px 30px rgba(0,0,0,.4);
}

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

/* ---------- accounts, ladder, clocks, saved setups ---------- */
.nav { display: flex; align-items: center; gap: 18px; }
.ai-start { display: flex; flex-direction: column; gap: 6px; }
.levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; margin: 0; padding: 0; border: 0; }
.levels label { position: relative; }
.levels input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.levels span {
  display: block; text-align: center; font-size: 14px; padding: 6px 0; border-radius: 8px;
  color: var(--muted); border: 1px solid var(--line);
}
.levels input:checked + span { color: var(--text); background: #2b3542; border-color: var(--gold); }
.levels input:focus-visible + span { outline: 2px solid var(--gold); outline-offset: 2px; }

.player {
  display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto auto; column-gap: 10px;
  padding: 8px 12px; border-radius: 10px; background: #141920; border: 1px solid var(--line);
}
.player .name { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.player .meta { grid-row: 2; font-size: 13px; color: var(--muted); }
.player .meta:empty { display: none; }
.player .clock {
  grid-column: 2; grid-row: 1 / span 2; align-self: center;
  font-size: 22px; font-weight: 800; font-variant-numeric: tabular-nums;
}
.player .clock.low { color: var(--lose); }
.player.turn[data-side="red"] { border-color: var(--red-1); }
.player.turn[data-side="blue"] { border-color: var(--blue-1); }

#board { touch-action: none; }
.cell.dragging .piece { opacity: .3; }
.piece.ghost {
  position: fixed; left: 0; top: 0; z-index: 10; pointer-events: none;
  outline: 3px solid var(--gold); box-shadow: 0 10px 24px rgba(0,0,0,.5);
}

.saved { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.saved:empty { display: none; }
.saved-item { position: relative; }
.thumb {
  display: grid; grid-template-columns: repeat(10, 1fr); gap: 1px; width: 100%; padding: 4px;
  background: #0e1217; border: 1px solid var(--line); border-radius: 6px; cursor: pointer;
}
.thumb:hover { border-color: var(--muted); }
.thumb i { aspect-ratio: 1; border-radius: 1px; background: var(--red-1); }
.thumb .r0 { background: var(--gold); }
.thumb .r11 { background: #050608; }
.thumb .r1, .thumb .r2 { opacity: .3; }
.thumb .r3, .thumb .r4 { opacity: .45; }
.thumb .r5, .thumb .r6 { opacity: .6; }
.thumb .r7, .thumb .r8 { opacity: .8; }
.del {
  position: absolute; top: -7px; right: -7px; width: 20px; height: 20px; padding: 0;
  border-radius: 50%; border: 1px solid var(--line); background: var(--panel); color: var(--muted);
  font: inherit; font-size: 13px; line-height: 1; cursor: pointer;
}
.del:hover { color: var(--text); }

.dialog.narrow { width: min(360px, 92vw); }
.form { display: flex; flex-direction: column; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); }
.field input {
  font: inherit; color: var(--text); background: #0e1217;
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
}
.error { margin: 0; min-height: 1.2em; color: var(--lose); font-size: 14px; }
.result .delta { font-size: 20px; font-weight: 800; margin-top: -10px; }
.result .delta.win { color: var(--win); }
.result .delta.lose { color: var(--lose); }

.ladder, .games {
  list-style: none; margin: 0 0 16px; padding: 0; min-width: min(420px, 80vw);
  max-height: 60vh; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--line) transparent;
}
.ladder li, .games li {
  display: grid; align-items: center; gap: 10px; padding: 8px 4px; border-bottom: 1px solid var(--line);
}
.ladder li { grid-template-columns: 32px 1fr auto 52px; }
.ladder li.muted { display: block; }
.ladder .pos { color: var(--muted); font-variant-numeric: tabular-nums; }
.ladder .name { text-align: left; color: var(--text); padding: 0; }
.ladder li:nth-child(-n+3) .pos { color: var(--gold); font-weight: 800; }
.ladder b, .games b { text-align: right; font-variant-numeric: tabular-nums; }
.games li { grid-template-columns: 28px 1fr auto 44px; }
.games:empty { display: none; }
.badge { display: inline-flex; justify-content: center; border-radius: 6px; font-size: 13px; padding: 2px 0; background: #2b3542; }
.games .win .badge { background: #234a2f; color: var(--win); }
.games .loss .badge { background: #4a2523; color: var(--lose); }
.stats { display: grid; grid-template-columns: repeat(4, auto); gap: 12px 20px; margin: 0 0 16px; }
.stats div:last-child { grid-column: 1 / -1; }
.stats dt { font-size: 13px; color: var(--muted); }
.stats dd { margin: 2px 0 0; font-size: 18px; font-weight: 700; }
.brand, .nav .link, #account { white-space: nowrap; }
#account { max-width: 180px; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 520px) {
  .topbar { padding: 12px 14px; gap: 10px; }
  .brand { letter-spacing: .04em; }
  .nav { gap: 12px; }
  #account { max-width: 130px; }
}