/* ARENA — фирменная холодная палитра (индиго/сталь/лёд) + оранжевый акцент огня */
:root{
  --brand:#3b6cff;
  --brand-2:#5f8bff;
  --accent:#ff7a2f;
  --bg:#0b0f1a;
  --surface:#121a2b;
  --surface-2:#182238;
  --text:#eaf0ff;
  --muted:#8fa0c4;
  --border:#25314d;
  --grad:linear-gradient(120deg,#3b6cff,#5f8bff 55%,#7aa0ff);
  --grad-fire:linear-gradient(120deg,#ff7a2f,#ff9d3f);
  --font-display:'Segoe UI',system-ui,-apple-system,'Inter',Roboto,'Helvetica Neue',Arial,sans-serif;
  --font-mono:ui-monospace,'SF Mono','Cascadia Code','Roboto Mono',Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-display);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.container{width:min(1180px,92vw);margin-inline:auto}
.mono{font-family:var(--font-mono)}
.muted{color:var(--muted)}
a{color:var(--brand-2);text-decoration:none}
h1,h2,h3,h4{line-height:1.08;letter-spacing:-.02em;margin:0 0 .4em;font-weight:800}
img{max-width:100%;display:block}

/* Кнопки */
.btn,.btn-ghost{
  display:inline-flex;align-items:center;gap:.5em;justify-content:center;
  padding:.72em 1.5em;border-radius:999px;font-weight:700;cursor:pointer;
  border:1px solid transparent;font-size:1rem;font-family:inherit;
  transition:transform .18s var(--ease-out,ease),box-shadow .18s,background .18s;
}
.btn{background:var(--grad);color:#fff}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px -8px rgba(59,108,255,.6)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--brand-2);color:#fff;transform:translateY(-2px)}
.btn-lg{padding:.9em 1.9em;font-size:1.08rem}

/* Topbar */
.topbar{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:1.5rem;
  padding:.8rem clamp(1rem,4vw,2.4rem);
  background:color-mix(in srgb,var(--bg) 78%,transparent);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.brand{display:inline-flex;align-items:center;gap:.55rem;color:var(--text);font-weight:800}
.brand-mark{color:var(--brand-2);display:inline-flex}
.brand-name{font-size:1.2rem;letter-spacing:.06em}
.brand-sub{color:var(--accent);font-family:var(--font-mono);font-size:.7em;letter-spacing:.02em}
.topnav{display:flex;gap:1.4rem;margin-left:auto}
.topnav a{color:var(--muted);font-weight:600;font-size:.95rem}
.topnav a:hover{color:var(--text)}
.build-badge{
  font-family:var(--font-mono);font-size:.72rem;color:var(--accent);
  border:1px solid color-mix(in srgb,var(--accent) 40%,var(--border));
  border-radius:999px;padding:.3em .8em;letter-spacing:.04em;
}

/* Hero */
.hero{position:relative;padding:clamp(4rem,10vw,8rem) 0 clamp(3rem,7vw,6rem);overflow:hidden}
.hero-mesh{position:absolute;inset:-20% -10%;z-index:0;
  background:
    radial-gradient(40% 45% at 20% 25%,rgba(59,108,255,.35),transparent 70%),
    radial-gradient(35% 40% at 82% 20%,rgba(122,160,255,.22),transparent 70%),
    radial-gradient(45% 50% at 70% 90%,rgba(255,122,47,.18),transparent 70%);
  filter:blur(10px);
}
.hero-grid{position:absolute;inset:0;z-index:0;opacity:.4;
  background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:44px 44px;mask-image:radial-gradient(70% 60% at 50% 40%,#000,transparent 90%);
}
.hero-inner{position:relative;z-index:1;max-width:820px}
.eyebrow{font-family:var(--font-mono);color:var(--brand-2);letter-spacing:.06em;font-size:.85rem;margin:0 0 1rem}
.hero h1{font-size:clamp(2.6rem,7vw,5rem);margin-bottom:.3em}
.lead{font-size:clamp(1.05rem,2vw,1.3rem);color:var(--muted);max-width:60ch}
.hero-cta{margin:2rem 0 2.4rem;flex-wrap:wrap;display:flex;gap:1rem}
.hero-stats{display:flex;gap:clamp(1.5rem,5vw,3.5rem);margin:0;flex-wrap:wrap}
.hero-stats div{border-left:2px solid var(--brand);padding-left:1rem}
.hero-stats dt{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;font-family:var(--font-mono);color:#fff}
.hero-stats dd{margin:0;color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.08em}

/* Секции */
.section{padding:clamp(3.5rem,8vw,6.5rem) 0}
.section-head{margin-bottom:2.5rem}
.kicker{font-family:var(--font-mono);color:var(--accent);letter-spacing:.08em;font-size:.8rem;text-transform:uppercase;margin:0 0 .4rem}
.section-head h2{font-size:clamp(1.8rem,4vw,2.8rem)}

.card{background:var(--surface);border:1px solid var(--border);border-radius:22px;padding:1.6rem}
.grid-auto{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
kbd{display:inline-block;font-family:var(--font-mono);font-size:.78em;background:var(--surface-2);
  border:1px solid var(--border);border-bottom-width:2px;border-radius:6px;padding:.15em .5em;margin:0 .12em;color:#fff}

/* Controls */
.controls-grid .ctl-ico{color:var(--brand-2);margin-bottom:.8rem}
.ctl h3{font-size:1.2rem}
.ctl p{color:var(--muted);font-size:.95rem;margin:0}

/* ===== STAGE / игра ===== */
.stage{position:relative;width:100%;aspect-ratio:16/9;border-radius:24px;overflow:hidden;
  border:1px solid var(--border);background:#0a1220;box-shadow:0 30px 80px -30px rgba(0,0,0,.8)}
#scene{position:absolute;inset:0;width:100%;height:100%;display:block}

.hud{position:absolute;inset:0;pointer-events:none;font-family:var(--font-mono);z-index:5;opacity:0;transition:opacity .3s}
.stage.playing .hud{opacity:1}
.crosshair{position:absolute;top:50%;left:50%;width:26px;height:26px;transform:translate(-50%,-50%)}
.crosshair span{position:absolute;background:rgba(255,255,255,.85);box-shadow:0 0 4px rgba(0,0,0,.6)}
.crosshair span:nth-child(1){top:0;left:50%;width:2px;height:8px;transform:translateX(-50%)}
.crosshair span:nth-child(2){bottom:0;left:50%;width:2px;height:8px;transform:translateX(-50%)}
.crosshair span:nth-child(3){left:0;top:50%;height:2px;width:8px;transform:translateY(-50%)}
.crosshair span:nth-child(4){right:0;top:50%;height:2px;width:8px;transform:translateY(-50%)}

.hud-top{position:absolute;top:14px;left:14px;right:14px;display:flex;gap:.6rem;flex-wrap:wrap}
.hud-chip{display:flex;align-items:center;gap:.5rem;background:rgba(10,16,28,.6);
  border:1px solid rgba(95,139,255,.3);border-radius:12px;padding:.4rem .7rem;backdrop-filter:blur(4px)}
.hud-chip .lbl{font-size:.62rem;color:var(--muted);letter-spacing:.1em}
.hud-chip .val{font-size:1rem;color:#fff;font-weight:700}
.hud-chip .val.big{color:var(--accent);font-size:1.3rem}
.hpbar{width:80px;height:8px;border-radius:6px;background:rgba(255,255,255,.12);overflow:hidden}
.hpbar i{display:block;height:100%;width:100%;background:linear-gradient(90deg,#ff4d4d,#ff9d3f);transition:width .25s}

.hud-bottom{position:absolute;bottom:16px;left:16px}
.weapon{gap:.7rem}
.weapon .wname{color:var(--brand-2);letter-spacing:.12em}
.weapon .ammo b{color:#fff;font-size:1.15rem}
.hitmark{position:absolute;top:50%;left:50%;width:20px;height:20px;transform:translate(-50%,-50%) scale(0);opacity:0}
.hitmark::before,.hitmark::after{content:"";position:absolute;top:50%;left:50%;width:14px;height:2px;background:var(--accent)}
.hitmark::before{transform:translate(-50%,-50%) rotate(45deg)}
.hitmark::after{transform:translate(-50%,-50%) rotate(-45deg)}
.hitmark.show{animation:hit .28s ease}
@keyframes hit{0%{transform:translate(-50%,-50%) scale(1.6);opacity:1}100%{transform:translate(-50%,-50%) scale(.6);opacity:0}}

.killfeed{position:absolute;top:60px;right:14px;display:flex;flex-direction:column;gap:.4rem;align-items:flex-end}
.kf-item{background:rgba(10,16,28,.65);border:1px solid rgba(255,122,47,.4);border-radius:8px;
  padding:.25rem .6rem;font-size:.72rem;color:#fff;animation:kfin .3s ease}
.kf-item b{color:var(--accent)}
@keyframes kfin{from{opacity:0;transform:translateX(12px)}to{opacity:1;transform:none}}

/* Оверлеи */
.overlay{position:absolute;inset:0;z-index:8;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 50% 40%,rgba(18,26,43,.7),rgba(8,12,22,.94));backdrop-filter:blur(3px)}
.overlay.hidden{display:none}
.overlay-card{text-align:center;max-width:440px;padding:1.6rem;width:92%}
.ov-kick{font-family:var(--font-mono);color:var(--accent);letter-spacing:.12em;text-transform:uppercase;font-size:.75rem;margin:0 0 .3rem}
.overlay-card h3{font-size:clamp(1.5rem,4vw,2.2rem)}
.ov-desc{color:var(--muted);font-size:.95rem;margin:.4rem 0 1.4rem}
.ov-keys{list-style:none;display:flex;flex-wrap:wrap;gap:.5rem 1rem;justify-content:center;padding:0;margin:1.4rem 0 0;font-size:.8rem;color:var(--muted);font-family:var(--font-mono)}
.ov-keys li{display:flex;align-items:center;gap:.3rem}
.result-grid{display:flex;gap:1.2rem;justify-content:center;margin:1rem 0 1.4rem}
.result-grid div{display:flex;flex-direction:column}
.result-grid span{font-size:2rem;font-weight:800;font-family:var(--font-mono);color:#fff}
.result-grid small{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.68rem}
.save-form{display:flex;gap:.6rem;flex-wrap:wrap;justify-content:center;margin-bottom:.8rem}
.fld{padding:.7em 1em;border-radius:999px;border:1px solid var(--border);background:var(--surface-2);color:#fff;font-family:inherit;font-size:.95rem;min-width:180px}
.fld:focus{outline:none;border-color:var(--brand-2)}
.stage-note{position:absolute;bottom:8px;right:14px;font-size:.7rem;color:var(--muted);font-family:var(--font-mono);z-index:4}

/* Split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px;border:1px solid var(--border)}
.split-text h2{font-size:clamp(1.6rem,3.5vw,2.4rem)}
.split-text p{color:var(--muted)}
.dot-list{list-style:none;padding:0;margin:1.2rem 0 0;display:grid;gap:.6rem}
.dot-list li{padding-left:1.4rem;position:relative;color:var(--text)}
.dot-list li::before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:2px;background:var(--accent)}

/* Board */
.board{padding:0;overflow:hidden}
.board-empty{padding:2rem;color:var(--muted);text-align:center;margin:0}
.board-table{width:100%;border-collapse:collapse}
.board-table th,.board-table td{padding:.9rem 1.2rem;text-align:left;border-bottom:1px solid var(--border)}
.board-table th{font-family:var(--font-mono);font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.board-table tr:last-child td{border-bottom:none}
.board-table .rk{font-family:var(--font-mono);color:var(--accent);font-weight:700}
.board-table .num{font-family:var(--font-mono);text-align:right;color:#fff}
.board-table tbody tr:hover{background:var(--surface-2)}

/* Roadmap */
.roadmap{list-style:none;padding:0;margin:0;display:grid;gap:1rem}
.rm{display:flex;gap:1.2rem;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:1.3rem 1.5rem}
.rm.done{border-color:color-mix(in srgb,var(--brand) 50%,var(--border))}
.rm.next{border-color:color-mix(in srgb,var(--accent) 45%,var(--border))}
.rm-n{font-family:var(--font-mono);font-size:1.6rem;font-weight:800;color:var(--muted);min-width:2ch}
.rm.done .rm-n{color:var(--brand-2)}
.rm.next .rm-n{color:var(--accent)}
.rm h3{font-size:1.15rem;margin-bottom:.2em}
.rm p{color:var(--muted);margin:0;font-size:.95rem}
.tag-done{color:#7affb0;font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;margin-left:.4rem}
.tag-next{color:var(--accent);font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;margin-left:.4rem}

/* CTA */
.cta-final{padding-bottom:clamp(4rem,9vw,7rem)}
.cta-box{text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:28px;padding:clamp(2.5rem,6vw,4.5rem)}
.cta-box h2{font-size:clamp(1.8rem,4vw,2.8rem)}
.cta-box p{color:var(--muted);max-width:50ch;margin-inline:auto}
.cta-box .btn{margin-top:1.4rem}

/* Footer */
.site-footer{border-top:1px solid var(--border);background:var(--surface);margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:2rem;padding:3rem 0 2rem}
.footer-col h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:.8rem}
.footer-col a{display:block;color:var(--text);padding:.2rem 0;font-size:.92rem}
.footer-col a:hover{color:var(--brand-2)}
.footer-col .muted{font-size:.9rem}
.footer-bottom{display:flex;justify-content:space-between;padding:1.2rem 0;border-top:1px solid var(--border);color:var(--muted);font-size:.82rem;flex-wrap:wrap;gap:.5rem}
.footer-bottom .mono{font-family:var(--font-mono)}

/* Reveal */
html.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease-out,ease),transform .6s var(--ease-out,ease)}
html.js .reveal.in{opacity:1;transform:none}

@media (max-width:820px){
  .topnav{display:none}
  .split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hud-top{gap:.4rem}
  .hud-chip{padding:.3rem .5rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
}