:root {
  --ink: #3f261f;
  --muted: #7f655d;
  --rose: #c95f72;
  --rose-dark: #9e4052;
  --rose-soft: #f5d8dc;
  --cream: #fff8ee;
  --paper: #fffaf2;
  --gold: #c79a4b;
  --gold-soft: #ead3a6;
  --line: rgba(132, 92, 53, .26);
  --shadow: 0 18px 50px rgba(66, 32, 24, .16);
}
* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", Georgia, serif;
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 230, 235, .95), transparent 28rem),
    radial-gradient(circle at 95% 14%, rgba(255, 241, 212, .85), transparent 24rem),
    linear-gradient(135deg, #fff6f1 0%, #f7e4df 45%, #fff9f0 100%);
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 70%);
}
button, input, select {
  font: inherit;
}
button { cursor: pointer; }
.app-shell { width: min(1500px, 100%); margin: 0 auto; padding: 18px clamp(12px, 2vw, 30px) 30px; }
.app-shell.mode-initial .layout { grid-template-columns: minmax(320px, 760px); justify-content: center; }
.app-shell.mode-setup .layout { grid-template-columns: minmax(320px, 760px); justify-content: center; }
.app-shell.mode-initial .setup { width: 100%; }
.app-shell.mode-setup .setup { width: 100%; }
.hero {
  position: relative;
  text-align: center;
  padding: 18px 20px 22px;
  margin-bottom: 16px;
  border: 1px solid rgba(176, 119, 61, .38);
  border-radius: 28px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.65), rgba(255,250,243,.92), rgba(255,255,255,.68)),
    radial-gradient(circle at 15% 50%, rgba(201,95,114,.18), transparent 14rem),
    radial-gradient(circle at 85% 50%, rgba(199,154,75,.18), transparent 14rem);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero::before, .hero::after {
  content: "";
  position: absolute;
  top: -42px;
  width: 260px;
  height: 110px;
  border-bottom: 12px solid rgba(255,255,255,.56);
  opacity: .8;
}
.hero::before { left: -34px; transform: rotate(-10deg); background: linear-gradient(135deg, rgba(203,92,112,.24), transparent); }
.hero::after { right: -34px; transform: rotate(10deg); background: linear-gradient(225deg, rgba(203,92,112,.20), transparent); }
.hero__ornament { color: var(--gold); font-size: 28px; line-height: 1; }
.hero__eyebrow { margin: 2px 0 0; letter-spacing: .22em; font-weight: 700; color: var(--muted); }
.hero h1 { margin: 2px 0 4px; font-size: clamp(32px, 5vw, 66px); letter-spacing: .08em; color: var(--rose-dark); text-shadow: 0 2px 0 rgba(255,255,255,.8); }
.hero__lead { margin: 0; color: var(--muted); font-size: clamp(13px, 1.8vw, 16px); }
.layout {
  display: grid;
  grid-template-columns: minmax(260px, 330px) minmax(320px, 1fr) minmax(260px, 330px);
  gap: 16px;
  align-items: start;
}
.panel {
  border: 1px solid rgba(176, 119, 61, .34);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,252,246,.96), rgba(255,246,237,.92));
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.panel::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(199,154,75,.30);
  border-radius: 18px;
  pointer-events: none;
}
.setup { padding: 16px; }
.rules-box { margin-bottom: 12px; padding: 12px; border-radius: 16px; background: rgba(255,255,255,.68); border: 1px solid rgba(199,154,75,.24); }
.rules-box h2 { margin: 0 0 8px; font-size: 16px; color: var(--rose-dark); }
.rules-box ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.in-game-menu { display: grid; gap: 8px; margin-top: 8px; }
.initial-menu { display: grid; gap: 10px; margin-bottom: 14px; }
.tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.tab, .primary, .secondary, .ghost {
  border: 1px solid rgba(151, 82, 54, .24);
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--ink);
  background: rgba(255,255,255,.68);
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.tab.active, .primary {
  color: #fff;
  background: linear-gradient(180deg, #d8798a, #ac4e60);
  box-shadow: 0 10px 22px rgba(172, 78, 96, .25);
}
.tab { font-size: 13px; padding-inline: 8px; }
.secondary { background: linear-gradient(180deg, #fff6e8, #efd4aa); }
.ghost { background: rgba(255,255,255,.58); padding: 8px 12px; font-size: 13px; }
button:hover { transform: translateY(-1px); box-shadow: 0 10px 20px rgba(69, 40, 27, .13); }
.tab-page { display: none; }
.tab-page.active { display: block; }
.field-row { display: grid; gap: 6px; margin-bottom: 12px; }
.field-row label { font-size: 13px; font-weight: 700; color: var(--muted); }
input, select {
  width: 100%;
  border: 1px solid rgba(130,86,48,.25);
  border-radius: 14px;
  padding: 10px 12px;
  background: rgba(255,255,255,.72);
  color: var(--ink);
  outline: none;
}
input:focus, select:focus { border-color: rgba(201,95,114,.65); box-shadow: 0 0 0 3px rgba(201,95,114,.13); }
.player-setup { display: grid; gap: 10px; margin: 14px 0; }
.player-row {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid rgba(199,154,75,.26);
  border-radius: 18px;
  background: rgba(255,255,255,.48);
}
.player-row img { width: 52px; height: 52px; object-fit: contain; filter: drop-shadow(0 4px 8px rgba(66, 32, 24, .18)); }
.player-row__fields { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.player-row__fields label { display: grid; gap: 4px; font-size: 12px; color: var(--muted); }
.player-row__fields label:first-child { grid-column: 1 / -1; }
.online-card { padding: 12px; margin-bottom: 12px; border-radius: 18px; background: rgba(255,255,255,.42); border: 1px solid rgba(199,154,75,.20); }
.online-card h2 { margin: 0 0 10px; color: var(--rose-dark); font-size: 18px; }
.room-panel { padding: 12px; border-top: 1px dashed rgba(150, 94, 52, .25); }
.hidden { display: none; }
.room-code { display: inline-block; letter-spacing: .14em; font-size: 28px; color: var(--rose-dark); background: #fff; padding: 6px 14px; border-radius: 14px; border: 1px solid rgba(199,154,75,.35); }
.slot-list { display: grid; gap: 8px; margin: 12px 0; }
.slot { display: flex; align-items: center; gap: 8px; padding: 8px; border-radius: 14px; background: rgba(255,255,255,.52); border: 1px solid rgba(199,154,75,.20); }
.slot img { width: 38px; height: 38px; object-fit: contain; }
.topbar { padding: 14px 16px; margin-bottom: 16px; display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.mini-label { display: block; margin: 0 0 4px; color: var(--muted); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
#gameTitle { margin: 0; font-size: clamp(18px, 2vw, 24px); }
.action-row { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.board-wrap { padding: clamp(10px, 2vw, 22px); }
.board {
  --board-size: 8;
  width: min(72vh, 100%);
  max-width: 760px;
  aspect-ratio: 1;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(var(--board-size), 1fr);
  grid-template-rows: repeat(var(--board-size), 1fr);
  gap: 5px;
  padding: 14px;
  border-radius: 32px;
  border: 2px solid rgba(117, 75, 35, .55);
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,.26), transparent 20%),
    linear-gradient(135deg, #e8cab3, #c1916d 45%, #a97258 100%);
  box-shadow: inset 0 0 0 8px rgba(255, 244, 226, .55), inset 0 0 32px rgba(75, 36, 22, .26), var(--shadow);
  position: relative;
}
.board::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(255,255,255,.56);
  border-radius: 25px;
  pointer-events: none;
}
.cell {
  position: relative;
  border: 1px solid rgba(87, 50, 31, .28);
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(255,248,232,.88), rgba(239,216,188,.70)),
    radial-gradient(circle at 50% 50%, rgba(255,255,255,.52), transparent 55%);
  box-shadow: inset 0 2px 0 rgba(255,255,255,.42);
  display: grid;
  place-items: center;
  min-width: 0;
}
.cell:nth-child(odd) { background: linear-gradient(135deg, rgba(253,240,221,.90), rgba(228,198,167,.72)); }
.cell.legal { cursor: pointer; }
.cell.legal::after {
  content: "";
  width: 34%;
  height: 34%;
  border-radius: 999px;
  border: 2px dashed rgba(154, 86, 54, .55);
  background: radial-gradient(circle, rgba(255,255,255,.65), rgba(204,111,128,.22));
  opacity: .85;
}
.cell.last { outline: 3px solid rgba(255, 255, 255, .8); box-shadow: 0 0 0 3px rgba(199,154,75,.55), inset 0 2px 0 rgba(255,255,255,.42); }
.disc {
  width: 85%; height: 85%;
  display: grid; place-items: center;
  animation: place .22s ease-out;
}
.disc img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 3px 6px rgba(45,20,15,.3)); }
.cell.occupied {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--cell-tint, #f1e2d4) 78%, #fff 22%), color-mix(in srgb, var(--cell-tint, #f1e2d4) 58%, #e8d1bd 42%)),
    radial-gradient(circle at 50% 50%, rgba(255,255,255,.45), transparent 62%);
}
.disc.flipped { animation: flip .38s ease both; }
@keyframes place { from { transform: scale(.55); opacity: .35; } to { transform: scale(1); opacity: 1; } }
@keyframes flip { 0% { transform: rotateY(0); } 48% { transform: rotateY(90deg) scale(.95); } 100% { transform: rotateY(180deg); } }
.sidebar { padding: 16px; }
.turn-card { padding: 14px; border-radius: 18px; background: linear-gradient(135deg, rgba(255,255,255,.72), rgba(246,217,215,.55)); border: 1px solid rgba(199,154,75,.24); margin-bottom: 14px; }
.turn-card strong { display: flex; align-items: center; gap: 8px; font-size: 20px; }
.turn-card img { width: 36px; height: 36px; object-fit: contain; }
.scoreboard { display: grid; gap: 9px; }
.score-row {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 9px; align-items: center;
  padding: 9px;
  border-radius: 16px;
  background: rgba(255,255,255,.55);
  border: 1px solid rgba(199,154,75,.20);
}
.score-row.active { outline: 2px solid rgba(201,95,114,.55); background: rgba(255,240,243,.72); }
.score-row img { width: 44px; height: 44px; object-fit: contain; }
.score-row .name { font-weight: 700; display: block; }
.score-row .kind { font-size: 12px; color: var(--muted); }
.score { font-size: 26px; color: var(--rose-dark); font-weight: 800; }
.log-box { margin-top: 14px; border-radius: 18px; background: rgba(255,255,255,.42); border: 1px solid rgba(199,154,75,.20); overflow: hidden; }
.log-head { padding: 10px 12px; background: rgba(201,95,114,.14); font-weight: 700; color: var(--rose-dark); }
.log { max-height: 220px; overflow: auto; padding: 10px 12px; font-size: 13px; color: var(--muted); display: grid; gap: 7px; }
.toast { position: fixed; left: 50%; bottom: 22px; transform: translate(-50%, 16px); opacity: 0; transition: .2s ease; padding: 10px 16px; background: rgba(63,38,31,.94); color: #fff; border-radius: 999px; z-index: 10; pointer-events: none; }
.toast.show { transform: translate(-50%, 0); opacity: 1; }
.winner-banner { padding: 12px; border-radius: 18px; margin-top: 12px; background: rgba(255,246,216,.78); border: 1px solid rgba(199,154,75,.34); color: var(--ink); }

@media (max-width: 1120px) {
  .layout { grid-template-columns: 320px 1fr; }
  .sidebar { grid-column: 1 / -1; }
  .scoreboard { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
}
@media (max-width: 760px) {
  .app-shell { padding: 10px; }
  .layout { grid-template-columns: 1fr; }
  .hero { padding: 14px 12px 16px; border-radius: 22px; }
  .setup { order: 2; }
  .game-stage { order: 1; }
  .sidebar { order: 1; }
  .setup { order: 3; }
  .game-stage { order: 2; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .board { gap: 3px; padding: 8px; border-radius: 22px; width: min(94vw, 720px); }
  .cell { border-radius: 8px; }
  .player-row__fields { grid-template-columns: 1fr; }
}

.room-list{display:grid;gap:8px;max-height:180px;overflow:auto;margin:8px 0;}
.room-item{display:block;padding:8px;border:1px solid rgba(199,154,75,.3);border-radius:10px;background:#fff8;}
.result-modal{position:fixed;inset:0;background:rgba(30,20,20,.55);display:grid;place-items:center;z-index:20}
.result-modal.hidden{display:none}
.result-card{background:#fff8f2;border-radius:16px;padding:18px;min-width:min(92vw,480px)}

.spectate-option{display:flex;align-items:center;gap:8px;margin:6px 0 10px;color:var(--muted);font-size:13px;}
.spectate-option input{width:auto;}
.hero{max-width:1100px;margin:0 auto 16px;}
.hero h1{font-size:clamp(26px,4.2vw,48px);}
.topbar{padding:10px 16px;margin-bottom:10px;justify-content:center;}
.topbar #gameTitle{text-align:center;}
.battle-room-panel{padding:12px;margin:8px 0 12px;border-radius:18px;background:rgba(255,255,255,.42);border:1px solid rgba(199,154,75,.20);}
.battle-room-head{display:flex;gap:8px;align-items:end;flex-wrap:wrap;margin-bottom:10px;}
.battle-room-head .field-row{margin:0;flex:1;min-width:220px;}
.room-actions{display:flex;gap:8px;flex-wrap:wrap;}