:root{
  --ink:#0b2147;
  --cream:#fff7dc;
  --rail:#fff2c7;
  --rail2:#ffd37b;
  --cell:#2f8bff;
  --cell2:#8fd6ff;
  --shadow:rgba(10,24,66,.22);

  --x1:#18e5ff;
  --x2:#0aa1ff;
  --o1:#ff4aa6;
  --o2:#ff3b4c;

  --card:rgba(255,255,255,.84);
  --card2:rgba(255,255,255,.70);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--ink);
  overflow-x:hidden;
  background:#bfe9ff;
}

.scene{position:fixed;inset:0;z-index:-1;pointer-events:none}
.sky{
  position:absolute;inset:0;
  background:
    radial-gradient(1200px 700px at 20% 10%, rgba(255,255,255,.65), transparent 55%),
    radial-gradient(900px 520px at 80% 0%, rgba(255,255,255,.60), transparent 52%),
    linear-gradient(180deg, #8fe7ff 0%, #bfefff 45%, #d8f7ff 70%, #e9fff7 100%);
}
.clouds{
  position:absolute;left:-10vw;right:-10vw;top:-6vh;height:55vh;
  background:
    radial-gradient(90px 42px at 12% 42%, rgba(255,255,255,.90), transparent 60%),
    radial-gradient(130px 54px at 20% 40%, rgba(255,255,255,.90), transparent 60%),
    radial-gradient(110px 50px at 34% 30%, rgba(255,255,255,.85), transparent 60%),
    radial-gradient(140px 58px at 52% 42%, rgba(255,255,255,.86), transparent 60%),
    radial-gradient(120px 54px at 70% 28%, rgba(255,255,255,.84), transparent 60%),
    radial-gradient(150px 62px at 86% 40%, rgba(255,255,255,.86), transparent 60%);
  filter: drop-shadow(0 12px 18px rgba(10,40,90,.10));
  opacity:.95;
}
.field{
  position:absolute;left:0;right:0;bottom:-10vh;height:46vh;
  background:
    radial-gradient(900px 360px at 50% 0%, rgba(255,255,255,.40), transparent 60%),
    radial-gradient(700px 260px at 20% 15%, rgba(255,255,255,.26), transparent 60%),
    linear-gradient(180deg, #7cf07a 0%, #36d86a 30%, #16b85a 62%, #0aa04e 100%);
  border-top-left-radius: 40px;
  border-top-right-radius: 40px;
  box-shadow: 0 -24px 40px rgba(14,71,30,.18) inset;
}
.sparkles{
  position:absolute;inset:0;
  background:
    radial-gradient(6px 6px at 14% 28%, rgba(255,218,120,.95), transparent 60%),
    radial-gradient(4px 4px at 26% 16%, rgba(255,96,203,.9), transparent 60%),
    radial-gradient(5px 5px at 44% 22%, rgba(98,255,220,.95), transparent 60%),
    radial-gradient(4px 4px at 64% 18%, rgba(255,242,160,.95), transparent 60%),
    radial-gradient(5px 5px at 78% 30%, rgba(158,130,255,.9), transparent 60%),
    radial-gradient(4px 4px at 86% 22%, rgba(255,138,138,.9), transparent 60%);
  opacity:.55;
  animation: floaty 8s ease-in-out infinite;
}
@keyframes floaty{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}
@media (prefers-reduced-motion: reduce){
  .sparkles{animation:none}
}

.wrap{
  min-height:100svh;
  display:grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(8px, 1.4vh, 12px);
  padding: clamp(10px, 1.6vh, 14px) clamp(10px, 2vw, 14px) calc(clamp(12px, 1.8vh, 16px) + env(safe-area-inset-bottom));
  max-width: 980px;
  margin: 0 auto;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}
.title{
  margin:0;
  font-size: clamp(22px, 4vw, 34px);
  letter-spacing:.2px;
  text-shadow: 0 2px 0 rgba(255,255,255,.6);
}
.backlink{
  display:inline-flex;
  align-items:center;
  gap:8px;
  text-decoration:none;
  color:#083166;
  font-weight:800;
  padding: 10px 12px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.75));
  box-shadow: 0 12px 24px rgba(8,49,102,.12), 0 2px 0 rgba(255,255,255,.85) inset;
}
.backlink:focus-visible{outline:3px solid rgba(24,229,255,.9);outline-offset:2px}

.hud{
  margin-top: clamp(6px, 1.2vh, 10px);
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(8px, 1.2vh, 12px);
  align-items:start;
}
.hudCard{
  background: linear-gradient(180deg, var(--card), var(--card2));
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 18px;
  padding: 10px 12px;
  box-shadow: 0 20px 40px rgba(10,40,90,.12), 0 2px 0 rgba(255,255,255,.75) inset;
}
.hudRow{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 12px;
  padding: 5px 2px;
  border-bottom: 1px dashed rgba(10,40,90,.12);
}
.hudRow:last-child{border-bottom:none}
.hudLabel{
  font-weight:900;
  letter-spacing:.2px;
  opacity:.92;
}
.hudLabel.x{color:#0479c4}
.hudLabel.o{color:#d11b67}
.hudValue{
  font-weight:900;
  font-variant-numeric: tabular-nums;
}
.result{
  grid-column: 1 / -1;
  min-height: 38px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding: 8px 10px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.60));
  border: 1px solid rgba(255,255,255,.70);
  box-shadow: 0 16px 32px rgba(10,40,90,.10), 0 2px 0 rgba(255,255,255,.80) inset;
  font-weight: 900;
}
.result[data-tone="x"]{color:#055ea3}
.result[data-tone="o"]{color:#c3175f}
.result[data-tone="draw"]{color:#2a4a7b}

.center{
  display:flex;
  align-items:center;
  justify-content:center;
  padding: clamp(4px, 0.8vh, 8px) 0;
}
.boardShell{
  width: min(92vw, 620px, 62svh);
}
.board{
  width: 100%;
  aspect-ratio: 1 / 1;
  display:grid;
  gap: clamp(8px, 1.2vmin, 10px);
  padding: clamp(10px, 1.6vmin, 14px);
  border-radius: 26px;
  background:
    radial-gradient(1200px 500px at 50% -20%, rgba(255,255,255,.8), rgba(255,255,255,.16) 44%, rgba(0,0,0,0) 70%),
    linear-gradient(180deg, rgba(19,177,255,.40), rgba(19,177,255,.22));
  border: 2px solid rgba(255,255,255,.85);
  box-shadow:
    0 28px 60px rgba(8,40,90,.20),
    0 2px 0 rgba(255,255,255,.80) inset;
}

.cell{
  position:relative;
  border:none;
  border-radius: 18px;
  background:
    radial-gradient(90% 90% at 30% 20%, rgba(255,255,255,.72), rgba(255,255,255,.18) 48%, rgba(0,0,0,0) 70%),
    linear-gradient(180deg, rgba(143,214,255,.88), rgba(47,139,255,.52));
  box-shadow:
    0 14px 26px rgba(8,40,90,.18),
    0 2px 0 rgba(255,255,255,.75) inset,
    0 -3px 0 rgba(0,0,0,.06) inset;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height: 44px;
  touch-action: manipulation;
}
.cell::before{
  content:"";
  position:absolute;inset:-10px;
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255,247,220,.92), rgba(255,211,123,.80));
  z-index:-1;
  box-shadow:
    0 0 0 2px rgba(255,255,255,.65),
    0 10px 20px rgba(9,41,92,.10);
}
.cell:focus-visible{outline:3px solid rgba(255,220,120,.95);outline-offset:3px}
.cell[disabled]{cursor:default;opacity:.92}

.mark{
  width: 74%;
  height: 74%;
  display:block;
  position:relative;
  transform: translateZ(0);
  filter: drop-shadow(0 10px 12px rgba(8,40,90,.16));
}
.mark.x{
  isolation: isolate;
  filter: drop-shadow(0 12px 16px rgba(6,90,175,.22));
}
.mark.x::before,
.mark.x::after{z-index: 1}
.mark.x::before,
.mark.x::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width: 26%;
  height: 118%;
  border-radius: 999px;
  transform-origin:center;
  background:
    radial-gradient(120% 140% at 25% 12%, rgba(255,255,255,.95), rgba(255,255,255,.35) 32%, rgba(255,255,255,0) 65%),
    linear-gradient(180deg, #3ff4ff 0%, #11cfff 30%, #0aa1ff 68%, #0676f0 100%);
  box-shadow:
    0 18px 30px rgba(4,92,166,.26),
    0 2px 0 rgba(255,255,255,.82) inset,
    0 -6px 10px rgba(0,0,0,.10) inset;
}
.mark.x::before{transform: translate(-50%,-50%) rotate(45deg)}
.mark.x::after{transform: translate(-50%,-50%) rotate(-45deg)}

.mark.o{
  border-radius: 999px;
  background:
    radial-gradient(120% 140% at 28% 12%, rgba(255,255,255,.95), rgba(255,255,255,.30) 34%, rgba(255,255,255,0) 66%),
    linear-gradient(180deg, #ff6bc0 0%, #ff4aa6 34%, #ff3b4c 76%, #e81b3f 100%);
  box-shadow:
    0 18px 30px rgba(168,7,72,.24),
    0 2px 0 rgba(255,255,255,.82) inset,
    0 -6px 10px rgba(0,0,0,.10) inset;
}
.mark.o{filter: drop-shadow(0 8px 10px rgba(120,10,60,.12))}
.mark.o::after{
  content:"";
  position:absolute;inset: 18%;
  border-radius: 999px;
  background:
    radial-gradient(120% 120% at 35% 18%, rgba(255,255,255,.62), rgba(255,255,255,.12) 50%, rgba(0,0,0,0) 76%),
    linear-gradient(180deg, rgba(143,214,255,.70), rgba(47,139,255,.36));
  box-shadow:
    0 14px 24px rgba(8,40,90,.12) inset,
    0 2px 0 rgba(255,255,255,.42);
}

.face{
  position:absolute;
  inset: 0;
  display:block;
  pointer-events:none;
  z-index: 5;
  filter: none;
}
.mark.o .face{filter: none}

/* Keep X face safely inside the crossing gap */
.mark.x .face{
  transform: translateY(2%) scale(.86);
}
.mark.o .face{
  transform: translateY(-1%) scale(.92);
}
.face .eye{
  position:absolute;
  width: 18%;
  height: 22%;
  top: 33%;
  border-radius: 999px;
  background: radial-gradient(120% 120% at 35% 30%, #ffffff 0 32%, #dfe8ff 60%, #c9d8ff 100%);
  box-shadow: 0 2px 0 rgba(255,255,255,.8) inset, 0 -2px 0 rgba(0,0,0,.10) inset;
}
.face .eye::after{
  content:"";
  position:absolute;
  left: 30%;
  top: 40%;
  width: 46%;
  height: 46%;
  border-radius: 999px;
  background: radial-gradient(120% 120% at 35% 30%, #4a2b43 0, #111 60%, #000 100%);
}
.face .eye::before{
  content:"";
  position:absolute;
  left: 44%;
  top: 22%;
  width: 18%;
  height: 18%;
  border-radius: 999px;
  background: rgba(255,255,255,.92);
}
.face .eye.left{left: 32%}
.face .eye.right{right: 32%}

.face .mouth{
  position:absolute;
  left:50%;
  top: 56%;
  width: 22%;
  height: 16%;
  transform: translateX(-50%);
  border-radius: 0 0 999px 999px;
  background: radial-gradient(130% 120% at 50% 15%, rgba(255,255,255,.35), rgba(255,255,255,0) 55%),
    linear-gradient(180deg, #1a0b17, #000);
  box-shadow: 0 2px 0 rgba(255,255,255,.15) inset;
}
.face .mouth::after{
  content:"";
  position:absolute;
  left:50%;
  bottom: 8%;
  width: 62%;
  height: 46%;
  transform: translateX(-50%);
  border-radius: 999px;
  background: radial-gradient(120% 120% at 35% 30%, rgba(255,180,210,.92), rgba(255,80,160,.88));
  opacity: .95;
}

.face .cheek{
  position:absolute;
  width: 16%;
  height: 12%;
  top: 55%;
  border-radius: 999px;
  background: radial-gradient(120% 120% at 50% 50%, rgba(255,255,255,.35), rgba(255,255,255,0) 55%),
    radial-gradient(120% 120% at 50% 50%, rgba(255,120,185,.55), rgba(255,120,185,0) 70%);
  opacity: .85;
}
.face .cheek.left{left: 20%}
.face .cheek.right{right: 20%}

/* Slightly different face placement per piece for better resemblance */
.mark.x .face{}
.mark.o .face{}

.cell.win{
  animation: winPulse 900ms ease-in-out infinite;
  box-shadow:
    0 18px 32px rgba(8,40,90,.20),
    0 2px 0 rgba(255,255,255,.80) inset,
    0 0 0 3px rgba(255,242,160,.95),
    0 0 26px rgba(255,96,203,.35);
}
@keyframes winPulse{
  0%,100%{transform: translateY(0) scale(1)}
  50%{transform: translateY(-1px) scale(1.02)}
}
@media (prefers-reduced-motion: reduce){
  .cell.win{animation:none}
}

.bottom{padding-top: 4px}
.controls{
  display:grid;
  gap: clamp(8px, 1.2vh, 12px);
}
.controlGroup{
  background: linear-gradient(180deg, rgba(255,255,255,.84), rgba(255,255,255,.68));
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 18px;
  padding: 10px;
  box-shadow: 0 18px 34px rgba(10,40,90,.10), 0 2px 0 rgba(255,255,255,.75) inset;
}
.controlLabel{
  font-weight: 950;
  letter-spacing:.2px;
  margin-bottom: 7px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}
.hint{font-weight:800;opacity:.72;font-size:.95em}

.segmented{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}
.chip{
  border:none;
  border-radius: 14px;
  padding: 11px 10px;
  font-weight: 950;
  letter-spacing:.2px;
  color:#09335f;
  background:
    radial-gradient(120% 140% at 30% 10%, rgba(255,255,255,.95), rgba(255,255,255,.60) 55%, rgba(255,255,255,.25) 75%),
    linear-gradient(180deg, rgba(255,242,199,.90), rgba(255,211,123,.76));
  box-shadow:
    0 16px 26px rgba(8,40,90,.10),
    0 2px 0 rgba(255,255,255,.78) inset,
    0 -3px 0 rgba(0,0,0,.06) inset;
  cursor:pointer;
  touch-action: manipulation;
}
.chip[aria-pressed="true"]{
  background:
    radial-gradient(120% 140% at 30% 10%, rgba(255,255,255,.95), rgba(255,255,255,.52) 50%, rgba(255,255,255,.18) 74%),
    linear-gradient(180deg, rgba(24,229,255,.86), rgba(10,161,255,.68));
  color:#04284c;
  box-shadow:
    0 18px 30px rgba(4,92,166,.18),
    0 2px 0 rgba(255,255,255,.78) inset,
    0 -3px 0 rgba(0,0,0,.06) inset;
}
.chip:focus-visible{outline:3px solid rgba(24,229,255,.9);outline-offset:2px}

.actions{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
}
.btn{
  flex:1;
  min-width: 160px;
  border:none;
  border-radius: 16px;
  padding: 12px 12px;
  font-weight: 1000;
  letter-spacing:.2px;
  color:#06305c;
  background:
    radial-gradient(120% 140% at 30% 10%, rgba(255,255,255,.95), rgba(255,255,255,.60) 55%, rgba(255,255,255,.25) 75%),
    linear-gradient(180deg, rgba(255,255,255,.90), rgba(255,255,255,.68));
  box-shadow:
    0 18px 34px rgba(10,40,90,.12),
    0 2px 0 rgba(255,255,255,.78) inset,
    0 -3px 0 rgba(0,0,0,.06) inset;
  cursor:pointer;
  touch-action: manipulation;
}
.btn.primary{
  background:
    radial-gradient(120% 140% at 30% 10%, rgba(255,255,255,.95), rgba(255,255,255,.52) 50%, rgba(255,255,255,.18) 74%),
    linear-gradient(180deg, rgba(255,90,198,.88), rgba(255,59,76,.70));
  color:#3b0b22;
}
.btn:focus-visible{outline:3px solid rgba(255,218,120,.95);outline-offset:2px}

@media (max-width: 720px){
  .hud{grid-template-columns: 1fr}
  .actions .btn{min-width: 140px}
  .boardShell{width: min(94vw, 58svh)}
}