:root{
  --page-bg:#ead8aa;
  --board-bg:#d8bd78;
  --area-bg:#f6e6b8;
  --area-gap:calc(var(--board-size) / 19);
  --board-size:min(94vw, calc(100dvh - 260px));
  --cell-size:calc(var(--board-size) / 19);
  --black:#161616;
  --white:#f8f8f8;
  --ink:#2b2114;
  --accent:#8b5a18;
}

*{
  box-sizing:border-box;
}

html,body{
  margin:0;
  min-height:100dvh;
}

body{
  background:linear-gradient(180deg,#f4e6c4,#e6cf92);
  color:var(--ink);
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  overflow:hidden;
}

#app{
  min-height:100dvh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:14px;
}

#topPanel,
#infoPanel{
  width:var(--board-size);
  max-width:100%;
  background:rgba(255,250,235,.84);
  border:1px solid rgba(80,54,20,.16);
  border-radius:16px;
  box-shadow:0 6px 18px rgba(60,38,12,.16);
  padding:10px 12px;
}

#titleRow{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}

h1{
  margin:0;
  font-size:clamp(18px,3vw,28px);
  letter-spacing:.05em;
}

#gameBadge{
  padding:5px 10px;
  border-radius:999px;
  background:#2f2417;
  color:#fff7df;
  font-size:13px;
  white-space:nowrap;
}

#turnBox{
  margin-top:8px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  background:#fff6d8;
  border-radius:12px;
  padding:8px 10px;
}

#turnLabel{
  font-size:14px;
  opacity:.72;
}

#turnValue{
  font-size:clamp(20px,5vw,32px);
}

#rolePanel{
  margin-top:8px;
}

.role-title{
  font-size:13px;
  opacity:.7;
  margin-bottom:6px;
}

#roleButtons{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:8px;
}

.role-btn,
#adminPanel button{
  border:0;
  border-radius:12px;
  padding:9px 8px;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  background:#fffdf4;
  color:#2b2114;
  box-shadow:inset 0 0 0 1px rgba(80,54,20,.18),0 2px 6px rgba(60,38,12,.13);
}

.role-btn.mine{
  background:#2f2417;
  color:#fff7df;
}

.role-btn.taken:not(.mine){
  opacity:.42;
  cursor:not-allowed;
}

.role-btn.black-role{
  border-bottom:4px solid #161616;
}

.role-btn.white-role{
  border-bottom:4px solid #ffffff;
  text-shadow:0 0 1px #666;
}

#adminPanel{
  margin-top:8px;
  display:flex;
  gap:8px;
}

#adminPanel[hidden]{
  display:none;
}

#adminPanel button{
  flex:1;
}

#adminStopBtn{
  background:#ffe4df;
  color:#8b1d12;
}

#boardWrap{
  width:var(--board-size);
  height:var(--board-size);
  background:var(--board-bg);
  border-radius:18px;
  padding:0;
  box-shadow:0 10px 30px rgba(60,38,12,.22);
}

#board{
  width:100%;
  height:100%;
  display:grid;
  grid-template-columns:repeat(4, calc(var(--cell-size) * 4));
  grid-template-rows:repeat(4, calc(var(--cell-size) * 4));
  gap:var(--area-gap);
}

.area{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-template-rows:repeat(4,1fr);
  background:var(--area-bg);
  border-radius:8px;
  overflow:hidden;
  box-shadow:inset 0 0 0 1px rgba(85,57,21,.28);
}

.area.black-owned{
  background:linear-gradient(rgba(30,30,30,.42),rgba(30,30,30,.42)),var(--area-bg);
}

.area.white-owned{
  background:linear-gradient(rgba(255,255,255,.62),rgba(255,255,255,.62)),var(--area-bg);
}

.area.full-area{
  background:linear-gradient(rgba(139,115,71,.34),rgba(139,115,71,.34)),var(--area-bg);
}

.area-label{
  position:absolute;
  left:4px;
  top:2px;
  z-index:5;
  font-size:11px;
  font-weight:800;
  color:rgba(40,28,12,.6);
  pointer-events:none;
}

.eye{
  position:relative;
  border:1px solid rgba(92,67,29,.35);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:900;
  font-size:clamp(14px,2.8vw,24px);
  background:rgba(255,255,255,.08);
  cursor:pointer;
  user-select:none;
}

.eye:hover{
  background:rgba(255,255,255,.28);
}

.eye.legal{
  background:rgba(78,150,76,.26);
  box-shadow:inset 0 0 0 2px rgba(31,120,55,.7);
}

.eye.illegal{
  cursor:not-allowed;
}

.eye.last-move::after{
  content:"";
  position:absolute;
  inset:18%;
  border:2px solid #d94d2b;
  border-radius:50%;
  pointer-events:none;
  animation:pulseLast .9s ease-in-out infinite alternate;
}

@keyframes pulseLast{
  from{ transform:scale(.88); opacity:.55; }
  to{ transform:scale(1.12); opacity:1; }
}

.mark.black{
  color:#111;
}

.mark.white{
  color:#fff;
  text-shadow:0 0 2px #111,0 0 2px #111,0 1px 2px #111;
}

.claim-line{
  position:absolute;
  z-index:4;
  height:4px;
  border-radius:999px;
  transform-origin:left center;
  pointer-events:none;
  opacity:.78;
}

.claim-line.black{
  background:#111;
}

.claim-line.white{
  background:#fff;
  box-shadow:0 0 0 1px rgba(0,0,0,.28);
}

#infoPanel{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:10px;
  font-size:14px;
}

#nextAreaBox{
  font-weight:800;
  white-space:nowrap;
}

#messageBox{
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  opacity:.82;
  text-align:right;
}

@media (hover:none), (pointer:coarse), (any-pointer:coarse){
  :root{
    --board-size:min(96vw, calc(100dvh - 290px));
  }

  #app{
    padding:10px;
    gap:10px;
  }

  #topPanel,
  #infoPanel{
    border-radius:14px;
  }

  #roleButtons{
    gap:6px;
  }

  .role-btn{
    font-size:14px;
    padding:10px 4px;
  }

  .area-label{
    font-size:9px;
  }

  #infoPanel{
    flex-direction:column;
    align-items:flex-start;
  }

  #messageBox{
    width:100%;
    text-align:left;
  }
}