:root{
  --bg1:#08111f;
  --bg2:#0f1a2d;
  --bg3:#18294b;
  --panel:#111e35cc;
  --panel-soft:#1a2c49ee;
  --line:#79f0d355;
  --text:#e9f7ff;
  --muted:#b7c9d8;
  --accent:#a3ff12;
  --accent-2:#36d6ff;
  --accent-3:#ff6b8c;
  --accent-4:#ffd166;
  --danger:#ff5d73;
  --good:#3fe0a1;
  --shadow:0 24px 60px rgba(0,0,0,.35);
  --hud-height:64px;
  --dock-height:244px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body,#app{width:100%;min-height:100%;margin:0}
body{font-family:Segoe UI,Inter,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at top left,#16304c 0%,#09101d 36%,#03060d 100%);overflow-x:hidden}
button{font:inherit;border:none;cursor:pointer;color:inherit}
button:focus-visible{outline:3px solid #ffffffaa;outline-offset:2px}
.hidden{display:none!important}
.app-shell{position:relative;min-height:100vh;isolation:isolate}
.bg-canvas{position:fixed;inset:0;width:100vw;height:100vh;z-index:-1}
.screen{display:none;min-height:100vh;padding:18px}
.screen.is-active{display:grid}
.start-screen{place-items:center;align-content:center;gap:18px}
.top-tools{position:fixed;top:16px;right:16px;display:flex;gap:10px;z-index:20}
.icon-btn{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(180deg,#294d72,#15263d);border:1px solid #93ffd433;box-shadow:var(--shadow);font-size:21px}
.icon-btn:hover{transform:translateY(-2px);filter:brightness(1.08)}
.icon-btn.small{width:42px;height:42px;font-size:16px}
.hero-card,.menu-card,.modal-card{width:min(980px,94vw);background:linear-gradient(180deg,var(--panel-soft),var(--panel));border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}
.hero-card{display:grid;grid-template-columns:170px 1fr;gap:16px;padding:24px 26px;align-items:center}
.atom-mark{position:relative;width:120px;height:120px;margin:auto;filter:drop-shadow(0 0 22px #36d6ff66)}
.atom-mark .core{position:absolute;inset:43px;background:radial-gradient(circle at 35% 35%,#fff, #7cf6e1 55%, #36d6ff 100%);border-radius:50%}
.atom-mark .orbit{position:absolute;inset:12px;border:3px solid #a3ff1288;border-radius:50%}
.atom-mark .orbit-a{transform:rotate(0deg) scaleY(.42)}
.atom-mark .orbit-b{transform:rotate(60deg) scaleY(.42)}
.atom-mark .orbit-c{transform:rotate(120deg) scaleY(.42)}
.eyebrow{margin:0 0 6px;color:var(--accent);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:12px}
.hero-copy h1{margin:0;font-size:clamp(36px,7vw,72px);line-height:.95;letter-spacing:.03em}
.subtitle{margin:10px 0 0;color:var(--muted);font-size:clamp(15px,2vw,20px)}
.menu-card{padding:24px}
.menu-group h2{margin:0 0 12px;color:#d4fff7;font-size:20px}
.mode-grid,.pill-grid,.legend-grid,.settings-grid{display:grid;gap:12px}
.mode-grid{grid-template-columns:repeat(4,1fr)}
.choice-card,.pill,.start-btn,.tool-btn,.answer-btn{border-radius:18px;transition:.16s;background:linear-gradient(180deg,#253b5f,#16263f);border:1px solid #80ffd02e;box-shadow:0 8px 0 rgba(0,0,0,.18)}
.choice-card{min-height:110px;padding:14px;display:grid;place-items:center;text-align:center;gap:8px}
.choice-card:hover,.pill:hover,.start-btn:hover,.tool-btn:hover,.answer-btn:hover{transform:translateY(-2px);filter:brightness(1.08)}
.choice-card.is-selected,.pill.is-selected{background:linear-gradient(180deg,#204e5a,#1f7c78);border-color:#b0fff266;box-shadow:0 0 0 1px #b0fff233,0 12px 30px #36d6ff33}
.choice-symbol{font-size:28px;color:var(--accent)}
.choice-card strong{font-size:20px}
.choice-card small{color:var(--muted)}
.settings-grid{grid-template-columns:1fr 1fr;margin-top:16px}
.pill-grid{grid-template-columns:repeat(4,1fr)}
.pill-grid.two-col{grid-template-columns:repeat(2,1fr)}
.pill{min-height:54px;padding:8px 10px;font-weight:700}
.legend-grid{grid-template-columns:repeat(6,1fr);margin:18px 0}
.legend-grid div{padding:12px;border-radius:16px;background:#0c15265c;border:1px solid #ffffff14;display:grid;gap:4px;text-align:center}
.legend-grid b{font-size:20px;color:var(--accent-4)}
.legend-grid span{font-size:12px;color:var(--muted)}
.start-btn{min-height:62px;width:100%;font-size:22px;font-weight:800;background:linear-gradient(90deg,#5a4bff,#36d6ff,#74f292)}
.footer-note{color:#c7d6e4;font-size:13px;text-align:center;opacity:.9}
.game-screen{grid-template-rows:var(--hud-height) 1fr auto;gap:10px}
.game-topbar{height:var(--hud-height);display:grid;grid-template-columns:auto 1fr auto auto auto;align-items:center;gap:10px;background:#0e1a2ccc;border:1px solid var(--line);border-radius:20px;padding:10px 12px;backdrop-filter:blur(10px)}
.player-hud{display:flex;gap:8px;align-items:center;overflow:auto;padding-bottom:2px}
.player-card{min-width:130px;height:44px;border-radius:14px;padding:6px 10px;display:grid;grid-template-columns:34px 1fr auto;gap:8px;align-items:center;background:#0f1f33;border:1px solid #ffffff10}
.player-badge{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;font-weight:800;background:#fff1}
.player-meta b{display:block;font-size:12px}
.lives{display:flex;gap:4px;margin-top:3px}
.cell{width:9px;height:9px;border-radius:3px;background:var(--accent)}
.cell.off{background:#ffffff22}
.player-score{font-weight:800;font-size:18px}
.timer-box{padding:8px 14px;border-radius:999px;background:linear-gradient(180deg,#213860,#15233c);border:1px solid #9ef0ff44;font-size:22px;font-weight:800;white-space:nowrap}
.arena-wrap{position:relative;height:calc(100vh - var(--hud-height) - var(--dock-h,var(--dock-height)) - 42px);min-height:310px;background:linear-gradient(180deg,#dffffb,#dcecff);border-radius:28px;border:2px solid #b8ffe7;overflow:hidden;box-shadow:var(--shadow)}
.game-canvas{width:100%;height:100%;display:block;background:transparent}
.arena-badge{position:absolute;left:50%;transform:translateX(-50%);padding:8px 14px;border-radius:999px;background:#0a2230cc;color:#dffefe;font-weight:700;font-size:12px;letter-spacing:.05em;z-index:2;backdrop-filter:blur(8px)}
.badge-top{top:10px}.badge-bottom{bottom:10px}
.answer-dock{display:grid;grid-template-columns:repeat(var(--cols,1),minmax(0,1fr));gap:10px;min-height:var(--dock-h,var(--dock-height))}
.answer-panel{display:grid;gap:10px;padding:12px;border-radius:20px;background:linear-gradient(180deg,#0f1c31,#132646);border:1px solid var(--line);box-shadow:var(--shadow)}
.answer-head{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center}
.answer-head strong{font-size:14px}
.answer-display{min-width:76px;min-height:42px;padding:8px 12px;border-radius:14px;background:#071018;color:var(--accent);display:grid;place-items:center;font-size:22px;font-weight:900;border:1px solid #a3ff1240}
.answer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.answer-btn{min-height:54px;padding:8px 10px;font-weight:800}
.answer-btn.true{background:linear-gradient(180deg,#267d52,#1f5844)}
.answer-btn.false{background:linear-gradient(180deg,#834064,#5f2f51)}
.answer-btn.fire{background:linear-gradient(180deg,#2d5fa7,#1b3d6d)}
.answer-btn.clear{background:linear-gradient(180deg,#5d5d70,#393b46)}
.answer-btn.info{background:linear-gradient(180deg,#7c6d2b,#5d4b1d)}
.panel-note{font-size:12px;color:var(--muted)}
.modal{position:fixed;inset:0;background:#0008;display:grid;place-items:center;padding:18px;z-index:40}
.modal-card{position:relative;padding:22px 22px 20px;color:var(--text)}
.modal-card h2{margin:0 32px 14px 0}
.modal-body{max-height:min(60vh,520px);overflow:auto;line-height:1.6;color:#e6f0f9}
.modal-body ul{padding-left:20px}
.modal-close{position:absolute;right:14px;top:10px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#ffffff18;font-size:24px}
.modal-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.tool-btn{min-height:48px;padding:12px 16px;font-weight:800}
.tool-btn.exit{background:linear-gradient(180deg,#7d3346,#552433)}
.tool-btn.resume{background:linear-gradient(180deg,#236c59,#17483c)}
@media(max-width:980px){
  .hero-card{grid-template-columns:1fr;text-align:center}
  .legend-grid,.settings-grid{grid-template-columns:1fr}
  .mode-grid{grid-template-columns:repeat(2,1fr)}
  .pill-grid{grid-template-columns:repeat(2,1fr)}
  .legend-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:760px){
  .answer-dock{grid-template-columns:repeat(2,minmax(0,1fr))!important}
  :root{--hud-height:56px;--dock-height:288px}
  .screen{padding:12px}
  .icon-btn{width:46px;height:46px;font-size:18px}
  .mode-grid{grid-template-columns:repeat(2,1fr)}
  .pill-grid,.pill-grid.two-col{grid-template-columns:repeat(2,1fr)}
  .legend-grid{grid-template-columns:repeat(2,1fr)}
  .game-topbar{padding:7px 8px;gap:6px}
  .timer-box{font-size:17px;padding:7px 10px}
  .player-card{min-width:92px;height:40px;grid-template-columns:26px 1fr auto;padding:5px 7px}
  .player-badge{width:24px;height:24px;border-radius:8px;font-size:11px}
  .player-meta b{font-size:10px}
  .player-score{font-size:13px}
  .cell{width:7px;height:7px}
  .arena-wrap{min-height:280px}
  .answer-panel{padding:8px;gap:8px}
  .answer-head strong{font-size:12px}
  .answer-display{min-height:36px;font-size:18px}
  .answer-btn{min-height:44px;font-size:14px}
  .arena-badge{font-size:10px;padding:6px 10px;max-width:84%;text-align:center}
}
@media(max-width:460px){
  .answer-dock{grid-template-columns:1fr!important}
  :root{--dock-height:308px}
  .answer-grid{grid-template-columns:1fr 1fr}
  .answer-btn{min-height:42px;font-size:13px;padding:6px}
  .player-card{min-width:78px}
  .game-topbar{grid-template-columns:auto 1fr auto auto auto}
}


/* === V9: 6-team keyboard aligns exactly under each player lane === */
.answer-dock.six-mode{grid-template-columns:repeat(6,minmax(0,1fr))!important;gap:6px;min-height:214px}
.answer-dock.six-mode .answer-panel{padding:7px;gap:6px;border-radius:16px;min-width:0;background:linear-gradient(180deg,color-mix(in srgb,var(--pc) 20%,#0f1c31),#10203a)}
.answer-dock.six-mode .answer-head{grid-template-columns:1fr;gap:5px;text-align:center}
.answer-dock.six-mode .answer-head strong{font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--pc)}
.answer-dock.six-mode .answer-display{min-width:0;width:100%;min-height:30px;padding:4px 5px;font-size:15px;border-radius:10px;color:var(--pc);border-color:color-mix(in srgb,var(--pc) 65%,transparent)}
.answer-dock.six-mode .answer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px}
.answer-dock.six-mode .answer-btn{min-height:33px;padding:4px 2px;font-size:10.5px;border-radius:10px;box-shadow:0 4px 0 rgba(0,0,0,.16);line-height:1.05}
.answer-dock.six-mode .panel-note{text-align:center;font-size:10.5px;line-height:1.2;white-space:nowrap;color:#d8f7ff}
@media(max-width:980px){
  .answer-dock.six-mode{gap:4px}
  .answer-dock.six-mode .answer-panel{padding:5px;border-radius:13px}
  .answer-dock.six-mode .answer-btn{min-height:30px;font-size:9.5px;padding:3px 1px}
  .answer-dock.six-mode .answer-display{min-height:27px;font-size:13px}
  .answer-dock.six-mode .answer-head strong{font-size:10px}
}
@media(max-width:760px){
  .answer-dock.six-mode{grid-template-columns:repeat(6,minmax(0,1fr))!important;gap:3px;min-height:198px}
  .answer-dock.six-mode .answer-panel{padding:4px;gap:4px;border-radius:10px}
  .answer-dock.six-mode .answer-btn{min-height:27px;font-size:8.5px;border-radius:8px}
  .answer-dock.six-mode .answer-display{min-height:24px;font-size:12px;padding:2px}
  .answer-dock.six-mode .answer-head strong{font-size:9px}
  .answer-dock.six-mode .panel-note{font-size:8.5px}
}
@media(max-width:460px){
  .answer-dock.six-mode{grid-template-columns:repeat(6,minmax(0,1fr))!important;gap:2px;min-height:188px}
  .answer-dock.six-mode .answer-panel{padding:3px;gap:3px}
  .answer-dock.six-mode .answer-grid{gap:3px}
  .answer-dock.six-mode .answer-btn{min-height:25px;font-size:7.5px;padding:2px 0}
  .answer-dock.six-mode .answer-display{min-height:22px;font-size:11px}
  .answer-dock.six-mode .answer-head strong{font-size:8px}
  .answer-dock.six-mode .panel-note{font-size:7.5px}
}

/* === V2 LIVING ANIMATION UPGRADE === */
.hero-card{animation:hero-breathe 4.8s ease-in-out infinite;position:relative;overflow:hidden}
.hero-card:before{content:'';position:absolute;inset:-40%;background:conic-gradient(from 0deg,transparent,#36d6ff22,transparent,#a3ff1222,transparent);animation:spin-sheen 9s linear infinite;z-index:0}.hero-card>*{position:relative;z-index:1}
.atom-mark{animation:float-lab 3.2s ease-in-out infinite}.atom-mark .orbit{animation:orbit-glow 2.6s ease-in-out infinite alternate}.atom-mark .orbit-b{animation-delay:.35s}.atom-mark .orbit-c{animation-delay:.7s}
.choice-card,.pill,.start-btn,.answer-btn,.icon-btn{will-change:transform,filter}.choice-card.is-selected,.pill.is-selected{animation:selected-pulse 1.8s ease-in-out infinite}.start-btn{position:relative;overflow:hidden}.start-btn:after{content:'';position:absolute;top:0;bottom:0;width:80px;left:-100px;background:linear-gradient(90deg,transparent,#ffffff88,transparent);transform:skewX(-18deg);animation:button-shine 2.4s ease-in-out infinite}
.game-topbar{animation:panel-glow 3.6s ease-in-out infinite}.answer-panel{animation:panel-rise .45s ease both}.answer-btn:active{transform:translateY(2px) scale(.98);filter:brightness(1.25)}
.timer-box{animation:timer-heart 2.2s ease-in-out infinite}.arena-wrap:before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,#ffffff22,transparent 26%),radial-gradient(circle at 80% 0%,#a3ff121a,transparent 30%);pointer-events:none;z-index:1;mix-blend-mode:screen}.arena-wrap:after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,transparent 0 42%,#ffffff22 47%,transparent 54%);transform:translateX(-120%);animation:arena-sweep 4s ease-in-out infinite;z-index:1;pointer-events:none}.game-canvas{position:relative;z-index:0}.arena-badge{animation:badge-float 2.6s ease-in-out infinite}.modal-card{animation:modal-pop .22s ease-out}.player-card{transition:.18s}.player-card:hover{transform:translateY(-2px) scale(1.02)}
@keyframes hero-breathe{0%,100%{box-shadow:var(--shadow),0 0 0 1px #79f0d333}50%{box-shadow:var(--shadow),0 0 38px #36d6ff44}}
@keyframes spin-sheen{to{transform:rotate(360deg)}}
@keyframes float-lab{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes orbit-glow{from{filter:drop-shadow(0 0 2px #a3ff12);opacity:.62}to{filter:drop-shadow(0 0 14px #36d6ff);opacity:1}}
@keyframes selected-pulse{0%,100%{box-shadow:0 0 0 1px #b0fff233,0 12px 30px #36d6ff22}50%{box-shadow:0 0 0 1px #b0fff288,0 0 30px #a3ff1255}}
@keyframes button-shine{0%,55%{left:-110px}100%{left:120%}}
@keyframes panel-glow{0%,100%{border-color:#79f0d355}50%{border-color:#a3ff1288}}
@keyframes panel-rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes timer-heart{0%,100%{transform:scale(1)}50%{transform:scale(1.045)}}
@keyframes arena-sweep{0%,40%{transform:translateX(-120%)}80%,100%{transform:translateX(120%)}}
@keyframes badge-float{0%,100%{filter:brightness(1);transform:translateX(-50%) translateY(0)}50%{filter:brightness(1.25);transform:translateX(-50%) translateY(-3px)}}
@keyframes modal-pop{from{opacity:0;transform:scale(.94) translateY(12px)}to{opacity:1;transform:scale(1) translateY(0)}}