:root {
  --ink: #241910;
  --paper: #f6efe2;
  --cinnabar: #9c2c2c;
  --cinnabar-dark: #7a1f1f;
  --wood-line: #5c3b24;
  --muted: #6d5c4d;
  --gold: #c6a15a;
  --panel: rgba(255, 250, 242, 0.96);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", "Microsoft YaHei", serif;
  background:
    radial-gradient(900px 420px at 0% -10%, rgba(156, 44, 44, 0.28), transparent 55%),
    radial-gradient(700px 380px at 100% 0%, rgba(198, 161, 90, 0.16), transparent 50%),
    linear-gradient(165deg, #2c241e 0%, #14110f 70%);
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 28px 8px;
  color: #f6efe2;
}

.brand { display: flex; align-items: center; gap: 12px; }

.seal {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 2px solid #e7c9c0;
  color: #f3d2cb;
  font-size: 26px;
  font-weight: 700;
}

h1, h2, p { margin: 0; }

h1 { font-size: 1.7rem; letter-spacing: 0.12em; font-weight: 700; }

.brand p { letter-spacing: 0.18em; font-size: 0.78rem; opacity: 0.75; }

.conn {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  border: 1px solid rgba(246, 239, 226, 0.35);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
}

main {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  justify-content: center;
  padding: 12px 20px 32px;
}

.board-card, .lobby {
  background: var(--panel);
  border-radius: 18px;
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.35);
}

.board-card { padding: 16px 16px 18px; width: min(100%, 640px); }

.status-bar {
  min-height: 1.4em;
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.board-wrap { padding: 4px; }

.board-wrap.board-busy { cursor: progress; }
.board-wrap.board-busy #board { pointer-events: none; }

#board {
  width: 100%;
  height: auto;
  display: block;
  touch-action: manipulation;
  user-select: none;
}

.board-bg { fill: #f0d7a6; }
.frame { fill: none; stroke: var(--wood-line); stroke-width: 2.2; }
.grid-line { stroke: var(--wood-line); stroke-width: 1.55; stroke-linecap: square; }
.star { stroke: var(--wood-line); stroke-width: 1.25; }
.river { fill: rgba(92, 138, 116, 0.16); }
.river-text {
  fill: #6a4328;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", "Microsoft YaHei", serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.4em;
  text-anchor: middle;
  dominant-baseline: central;
}
.coord {
  fill: #8d6848;
  font-size: 12px;
  font-family: "Segoe UI", "Noto Sans", sans-serif;
  text-anchor: middle;
  dominant-baseline: central;
}
.piece-shadow { fill: rgba(70, 36, 12, 0.22); }
.disc { fill: url(#discGrad); stroke-width: 2; }
.disc.red { stroke: #b42323; }
.disc.black { stroke: #222; }
.piece-label {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", "Microsoft YaHei", serif;
  font-size: 24px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
}
.piece-label.red { fill: #b32020; }
.piece-label.black { fill: #1a1a1a; }
.last-move { fill: rgba(255, 208, 84, 0.9); }
.selected-ring { fill: none; stroke: #e39b12; stroke-width: 3; }
.check-ring { fill: none; stroke: #d32f2f; stroke-width: 3.5; animation: pulse 1s ease-in-out infinite; }
.dest { fill: rgba(36, 122, 67, 0.95); }
.dest-capture { fill: none; stroke: #1f7a43; stroke-width: 3.5; }
.hit { fill: transparent; }
#board.can-move .hit { cursor: pointer; }

@keyframes pulse {
  50% { stroke-opacity: 0.35; }
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: end;
  margin-top: 12px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--muted);
}

label.check {
  flex-direction: row;
  align-items: center;
  align-self: center;
  gap: 6px;
}

select, button { font: inherit; }

select {
  padding: 0.45rem 0.6rem;
  border-radius: 8px;
  border: 1px solid #e0d2bc;
  background: #fff;
  color: var(--ink);
}

button {
  background: var(--cinnabar);
  color: #fffaf3;
  border: 0;
  border-radius: 999px;
  padding: 0.55rem 1.15rem;
  cursor: pointer;
}

button:hover { background: var(--cinnabar-dark); }
button:disabled { opacity: 0.6; cursor: wait; }

button.secondary {
  background: transparent;
  color: var(--cinnabar);
  border: 1px solid var(--cinnabar);
  padding: 0.35rem 0.8rem;
}

button.secondary:hover { background: rgba(156, 44, 44, 0.08); }

.message {
  margin: 12px 0 0;
  min-height: 2.6em;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  background: #f3e7d2;
  color: var(--ink);
}

.message.check { background: #fde8e6; color: #9c2c2c; font-weight: 700; }
.message.over { background: #3e2723; color: #ffe8c2; font-weight: 700; }
.message.error { background: #fde8e6; color: #9c2c2c; }

.lobby {
  width: min(100%, 320px);
  padding: 16px;
  max-height: calc(100vh - 120px);
  overflow: auto;
}

.lobby-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

h2 { font-size: 1.2rem; letter-spacing: 0.08em; }

#roomList { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

.room {
  border: 1px solid #eadfce;
  border-radius: 12px;
  padding: 10px;
  background: #fffdf8;
}

.room.active { border-color: var(--gold); box-shadow: inset 0 0 0 1px var(--gold); }

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

.room-meta { color: var(--muted); font-size: 0.84rem; margin: 4px 0 8px; }

.empty { color: var(--muted); padding: 8px 2px; }

@media (max-width: 900px) {
  main { flex-direction: column; align-items: stretch; }
  .board-card, .lobby { width: 100%; max-height: none; }
  .top { padding: 16px 16px 4px; }
}

/* 断点续弈 panel */
.continue { margin-top: 18px; border-top: 1px solid rgba(0,0,0,.12); padding-top: 12px; }
.continue h2 { margin: 0 0 6px; }
.continue .fee,
.continue .fine { font-size: 13px; word-break: break-all; opacity: .85; margin: 0 0 6px; color: var(--ink); }
.cont-form label, .cont-opts label { display: block; font-size: 13px; margin: 6px 0; }
.cont-form input, .cont-form textarea, .paybox input { width: 100%; box-sizing: border-box; font: inherit; padding: 4px 6px; margin: 2px 0; }
.replay .nav { display: flex; gap: 4px; align-items: center; margin: 8px 0; }
.replay .nav input[type=range] { flex: 1; }
.cont-opts { display: flex; gap: 10px; }
.paybox { margin-top: 10px; padding: 8px; border: 1px dashed rgba(0,0,0,.25); border-radius: 6px; font-size: 13px; }
.paybox code { word-break: break-all; }
button.small { padding: 2px 6px; font-size: 12px; }

#leaveSpectateBtn { margin-top: 10px; }
.replay .nav button { padding: 4px 8px; min-width: 0; }
.lobby { overflow-y: auto; }

[hidden] { display: none !important; }