:root{
  --bg:#0e1117;
  --bg-soft:#151a23;
  --card:#171d28;
  --line:#273041;
  --line-strong:#3a465c;
  --ink:#e7ecf5;
  --ink-dim:#8b97ab;
  --x:#4cc9f0;
  --x-soft:rgba(76,201,240,.14);
  --o:#ff7b9c;
  --o-soft:rgba(255,123,156,.14);
  --gold:#ffd166;
  --radius:16px;
  --cell:min(3.6vw, 42px);
}

*{box-sizing:border-box}
/* авторские display:grid/flex ниже перебивают браузерное [hidden] — чиним разом */
[hidden]{display:none !important}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(1100px 700px at 12% -10%, #1b2536 0%, transparent 60%),
    radial-gradient(900px 600px at 105% 110%, #241b2b 0%, transparent 55%),
    var(--bg);
  color:var(--ink);
  font-family:"Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing:antialiased;
}

.layout{
  max-width:1180px;
  margin:0 auto;
  padding:28px 20px 48px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:28px;
  align-items:start;
}

/* ---------- заголовок и статус ---------- */
.stage__head h1{
  margin:0 0 6px;
  font-size:clamp(22px,3vw,32px);
  font-weight:800;
  letter-spacing:-.02em;
}
.sub{margin:0;color:var(--ink-dim);font-size:14px;max-width:52ch}

.status{
  display:flex;align-items:center;gap:12px;
  margin:20px 0 14px;
  padding:10px 14px;
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:12px;
  min-height:52px;
}
.status__mark{
  display:grid;place-items:center;
  width:32px;height:32px;flex:none;
  border-radius:9px;
  font-weight:800;font-size:18px;line-height:1;
  background:var(--x-soft);color:var(--x);
  transition:background .2s, color .2s;
}
.status--o .status__mark{background:var(--o-soft);color:var(--o)}
.status--end .status__mark{background:rgba(255,209,102,.14);color:var(--gold)}
.status__text{font-size:14px;color:var(--ink-dim)}
.status__text b{color:var(--ink);font-weight:600}

/* ---------- доска ---------- */
.board-wrap{position:relative;display:inline-block}

.board{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  padding:10px;
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 24px 60px -30px rgba(0,0,0,.9);
}

.mini{
  position:relative;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:3px;
  padding:5px;
  border-radius:10px;
  background:#10151d;
  border:1px solid var(--line);
  transition:box-shadow .18s, border-color .18s, background .18s;
}
.mini.is-open{
  border-color:var(--line-strong);
  background:#131a24;
}
.hints .mini.is-open{
  box-shadow:0 0 0 2px rgba(255,255,255,.09), 0 0 24px -6px rgba(120,170,255,.35);
}
.hints .mini.is-open.turn-x{box-shadow:0 0 0 2px rgba(76,201,240,.7), 0 0 30px -4px rgba(76,201,240,.65)}
.hints .mini.is-open.turn-o{box-shadow:0 0 0 2px rgba(255,123,156,.7), 0 0 30px -4px rgba(255,123,156,.65)}
.mini.is-dead{opacity:.55;filter:saturate(.7)}
.mini.is-dead.won-x,.mini.is-dead.won-o{opacity:.9;filter:none}

.cell{
  position:relative;
  width:var(--cell);height:var(--cell);
  display:grid;place-items:center;
  border:0;padding:0;margin:0;
  border-radius:7px;
  background:#1b2230;
  color:transparent;
  font-family:inherit;
  font-weight:800;
  font-size:calc(var(--cell) * .62);
  line-height:1;
  cursor:default;
  transition:background .14s, transform .08s, color .14s;
}
.cell.is-playable{cursor:pointer}
.hints .cell.is-playable{background:#222c3d}
.cell.is-playable:hover{background:#2b384d}
.cell.is-playable:active{transform:scale(.94)}
.cell.is-playable:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

.cell.x{color:var(--x);background:rgba(76,201,240,.10)}
.cell.o{color:var(--o);background:rgba(255,123,156,.10)}
.cell.in-line{background:rgba(255,209,102,.18)}
.cell.is-last::after{
  content:"";position:absolute;inset:auto 0 3px;margin:0 auto;
  width:16%;height:2px;border-radius:2px;background:currentColor;opacity:.85;
}

/* Владелец малого поля: цвет самого поля плюс небольшой бейдж в углу.
   Крупный знак по центру не годится — он неизбежно обводит центральную
   клетку и читается как «нолик внутри нолика». */
.mini.won-x{background:rgba(76,201,240,.11);border-color:rgba(76,201,240,.6)}
.mini.won-o{background:rgba(255,123,156,.11);border-color:rgba(255,123,156,.6)}

.mini__won{
  position:absolute;top:2px;right:2px;
  width:calc(var(--cell) * .46);height:calc(var(--cell) * .46);
  display:grid;place-items:center;
  border-radius:5px;
  font-size:calc(var(--cell) * .36);
  font-weight:800;line-height:1;
  pointer-events:none;
  opacity:0;
  transition:opacity .25s;
}
.mini.won-x .mini__won{opacity:1;color:var(--x);background:rgba(76,201,240,.3)}
.mini.won-o .mini__won{opacity:1;color:var(--o);background:rgba(255,123,156,.3)}
/* поля победной тройки выделяем золотом */
.mini.big-line{background:rgba(255,209,102,.1);border-color:rgba(255,209,102,.75)}
.mini.big-line .mini__won{color:var(--gold);background:rgba(255,209,102,.28)}
.mini.drawn::after{
  content:"";position:absolute;inset:0;border-radius:10px;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 6px,transparent 6px 12px);
  pointer-events:none;
}

/* ---------- финальный оверлей ---------- */
.overlay{
  position:absolute;inset:0;
  display:grid;place-items:center;
  background:rgba(8,11,16,.78);
  backdrop-filter:blur(3px);
  border-radius:var(--radius);
  z-index:5;
  animation:fade .25s ease both;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.overlay__card{
  text-align:center;
  padding:26px 34px;
  background:var(--card);
  border:1px solid var(--line-strong);
  border-radius:16px;
  box-shadow:0 30px 70px -30px #000;
}
.overlay__mark{font-size:52px;font-weight:800;line-height:1;margin-bottom:8px}
.overlay__mark.x{color:var(--x)} .overlay__mark.o{color:var(--o)} .overlay__mark.d{color:var(--gold)}
.overlay__title{font-size:19px;font-weight:600;margin-bottom:18px}
.overlay__hint{margin:12px 0 0;font-size:12px;color:var(--ink-dim)}

/* ---------- панель ---------- */
.panel{display:grid;gap:14px}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px;
}
.card__title{
  margin:0 0 12px;
  font-size:12px;font-weight:800;
  letter-spacing:.09em;text-transform:uppercase;
  color:var(--ink-dim);
}

.card__note{margin:-6px 0 10px;font-size:12px;color:var(--ink-dim)}

.opt{display:flex;gap:10px;padding:10px;border-radius:10px;cursor:pointer;transition:background .15s}
.opt:hover{background:#1d2531}
.opt.is-locked{opacity:.45;cursor:not-allowed}
.opt.is-locked:hover{background:transparent}
.opt input{margin:3px 0 0;accent-color:var(--x);flex:none;width:16px;height:16px}
.opt__name{display:block;font-size:14px;font-weight:600;margin-bottom:2px}
.opt__desc{display:block;font-size:12.5px;line-height:1.45;color:var(--ink-dim)}

.score{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.score__item{
  text-align:center;padding:10px 4px;border-radius:10px;
  background:#1b2230;border:1px solid var(--line);
}
.score__mark{display:block;font-size:13px;font-weight:800;margin-bottom:2px}
.score__val{display:block;font-size:22px;font-weight:800}
.score__item--x .score__mark{color:var(--x)}
.score__item--o .score__mark{color:var(--o)}
.score__item--d .score__mark{color:var(--ink-dim)}

.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:12px}

.btn{
  font:inherit;font-weight:600;font-size:14px;
  padding:10px 14px;border-radius:10px;
  border:1px solid transparent;cursor:pointer;
  transition:filter .15s, background .15s, opacity .15s;
}
.btn--primary{background:linear-gradient(180deg,#4cc9f0,#31a8d4);color:#06222c}
.btn--primary:hover{filter:brightness(1.08)}
.btn--ghost{background:#1b2230;border-color:var(--line-strong);color:var(--ink)}
.btn--ghost:hover{background:#232c3c}
.btn--sm{padding:7px 12px;font-size:13px;width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed}

.switch{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-dim);cursor:pointer}
.switch input{accent-color:var(--x);width:16px;height:16px}

.rules{margin:0;padding-left:18px;font-size:13px;line-height:1.6;color:var(--ink-dim)}
.rules li{margin-bottom:6px}
.rules li:last-child{margin-bottom:0}

/* ---------- адаптив ---------- */
@media (max-width:980px){
  .layout{grid-template-columns:1fr;gap:20px}
  .board-wrap{display:block}
  :root{--cell:min(8.2vw, 46px)}
  .stage{display:flex;flex-direction:column;align-items:center}
  .stage__head{align-self:stretch}
  .status{align-self:stretch}
}
@media (max-width:420px){
  .layout{padding:16px 12px 32px}
  .board{gap:6px;padding:6px}
  .mini{gap:2px;padding:3px}
}

/* ---------- игра по сети ---------- */
.tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:12px}
.tab{
  font:inherit;font-size:13px;font-weight:600;
  padding:9px 8px;border-radius:9px;cursor:pointer;
  background:transparent;border:1px solid var(--line);color:var(--ink-dim);
  transition:background .15s, color .15s, border-color .15s;
}
.tab:hover:not(:disabled){background:#232c3c;color:var(--ink)}
.tab.is-on{background:rgba(76,201,240,.2);border-color:rgba(76,201,240,.75);color:var(--x)}
.tab:disabled{opacity:.4;cursor:not-allowed}

.net{display:grid;gap:12px}

.net__status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-dim)}
.net__status .dot{width:8px;height:8px;border-radius:50%;background:var(--ink-dim);flex:none}
.net__status.is-wait .dot{background:var(--gold);animation:pulse 1.2s ease-in-out infinite}
.net__status.is-ok .dot{background:#5ddc9a}
.net__status.is-ok{color:#5ddc9a}
.net__status.is-error .dot{background:var(--o)}
.net__status.is-error{color:var(--o)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}

.net__setup{display:grid;gap:8px}
.net__or{text-align:center;font-size:12px;color:var(--ink-dim)}
.net__join{display:grid;grid-template-columns:1fr auto;gap:6px}

.input{
  font:inherit;font-size:14px;font-weight:600;
  padding:9px 11px;border-radius:9px;
  background:#10151d;border:1px solid var(--line-strong);color:var(--ink);
  min-width:0;letter-spacing:.12em;text-transform:uppercase;
}
.input::placeholder{color:var(--ink-dim);letter-spacing:.12em}
.input:focus{outline:2px solid rgba(76,201,240,.5);outline-offset:1px}
.input--link{font-size:11.5px;font-weight:400;letter-spacing:0;text-transform:none;color:var(--ink-dim)}

.net__live{display:grid;gap:8px}
.net__code{font-size:13px;color:var(--ink-dim)}
.net__code b{
  display:inline-block;margin-left:4px;padding:2px 8px;border-radius:7px;
  background:rgba(255,209,102,.14);color:var(--gold);
  font-size:16px;letter-spacing:.18em;
}
.net__you{font-size:13px;color:var(--ink-dim)}
.net__you .mark-x{color:var(--x)}
.net__you .mark-o{color:var(--o)}
.net__buttons{display:grid;grid-template-columns:1fr auto;gap:6px}

.board.is-waiting{opacity:.5}
.board.is-idle{opacity:.72}
.board.is-waiting .mini,.board.is-idle .mini{box-shadow:none}