:root{color-scheme:dark;--red:#d5101d;--red-light:#ff3c48;--panel:#111;--border:rgba(255,255,255,.12)}
*{box-sizing:border-box}
html{background:#050505}
body{min-width:320px;margin:0;background:radial-gradient(circle at 50% -10%,#2b0207 0,#090909 32rem,#050505 70rem);color:#fff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,a,input{-webkit-tap-highlight-color:transparent}
button,input{font:inherit}
.noise{position:fixed;inset:0;z-index:-1;opacity:.05;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E")}
.game-header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;max-width:1280px;margin:auto;padding:18px clamp(16px,4vw,48px)}
.back{justify-self:start;color:#ddd;text-decoration:none;font-weight:800}.back:hover{color:#fff}
.game-brand{display:flex;align-items:center;gap:10px;font-weight:950;letter-spacing:-.03em}.game-brand img{width:42px;height:42px;border-radius:50%;object-fit:cover;background:#190205}
.header-button{justify-self:end;padding:10px 16px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.06);color:#fff;font-weight:850;cursor:pointer}.header-button:disabled{opacity:.38;cursor:not-allowed}
.game-page{width:min(1120px,100%);margin:auto;padding:45px clamp(16px,4vw,48px) 70px}
.game-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:28px}
.eyebrow{margin:0 0 10px;color:var(--red-light);font-size:.72rem;font-weight:950;letter-spacing:.2em;text-transform:uppercase}
.game-heading h1{margin:0;font-size:clamp(3rem,8vw,6.5rem);line-height:.85;letter-spacing:-.075em}
.game-heading p:not(.eyebrow){max-width:560px;margin:20px 0 0;color:#aaa;line-height:1.6}
.score-board{display:grid;grid-template-columns:repeat(3,minmax(88px,1fr));gap:10px;min-width:min(100%,360px)}
.score-board div{padding:14px 16px;border:1px solid var(--border);border-radius:18px;background:rgba(255,255,255,.045);text-align:center}
.score-board span{display:block;color:#888;font-size:.68rem;font-weight:850;letter-spacing:.12em;text-transform:uppercase}.score-board strong{display:block;margin-top:4px;font-size:1.55rem}
.board-shell{position:relative;width:min(100%,700px);aspect-ratio:1;margin:0 auto;overflow:hidden;border:1px solid rgba(255,255,255,.16);border-radius:30px;background:#080808;box-shadow:0 35px 90px rgba(0,0,0,.5),0 0 60px rgba(190,0,15,.12);touch-action:none}
#snakeBoard{display:block;width:100%;height:100%;touch-action:none}
.game-overlay{position:absolute;inset:0;z-index:5;display:grid;place-items:center;padding:22px;background:rgba(0,0,0,.76);backdrop-filter:blur(8px);overflow:auto}
.hidden{display:none!important}
.overlay-card{width:min(100%,440px);padding:30px;border:1px solid rgba(255,255,255,.16);border-radius:28px;background:linear-gradient(145deg,rgba(24,24,24,.98),rgba(9,9,9,.99));text-align:center;box-shadow:0 25px 80px rgba(0,0,0,.55)}
.overlay-card>img{width:88px;height:88px;margin-bottom:16px;border:3px solid #fff;border-radius:50%;object-fit:cover;background:#1a0305;box-shadow:0 0 35px rgba(255,44,57,.35)}
.overlay-card h2{margin:0;font-size:clamp(2rem,6vw,3.5rem);line-height:.95;letter-spacing:-.055em}.overlay-card p:not(.eyebrow):not(.form-error):not(.control-note):not(.record-message){margin:16px auto 0;color:#aaa;line-height:1.5}.overlay-card p strong{color:#fff;font-size:1.2rem}
.player-field{display:block;margin:20px auto 0;text-align:left}.player-field span{display:block;margin:0 0 7px;color:#ddd;font-size:.78rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.player-field input{width:100%;padding:14px 16px;border:1px solid rgba(255,255,255,.18);border-radius:15px;outline:0;background:#080808;color:#fff}.player-field input:focus{border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.08)}
.form-error{min-height:20px;margin:8px 0 0;color:#ff818b;font-size:.84rem;font-weight:800}.control-note{margin:12px 0 0!important;color:#777!important;font-size:.76rem;line-height:1.35!important}.record-message{min-height:24px;margin:12px 0 0;color:#ff9aa2;font-weight:850;line-height:1.4}
.overlay-card button{margin-top:18px;padding:14px 24px;border:0;border-radius:999px;background:#fff;color:#050505;font-weight:950;cursor:pointer}.overlay-card button:hover{transform:translateY(-1px)}.overlay-card button:disabled{opacity:.55;cursor:wait;transform:none}
.overlay-card .secondary-button{display:block;margin:10px auto 0;padding:10px 16px;border:1px solid rgba(255,255,255,.15);background:transparent;color:#ddd;font-size:.85rem}
.small-card{width:min(100%,400px)}
.mobile-controls{display:none;width:250px;margin:24px auto 0;text-align:center;user-select:none}.mobile-controls>button{margin-bottom:8px}.mobile-controls>div{display:flex;justify-content:center;gap:8px}.mobile-controls button{width:72px;height:58px;border:1px solid rgba(255,255,255,.16);border-radius:17px;background:#161616;color:#fff;font-size:1.45rem;font-weight:950;box-shadow:0 7px 0 #050505;touch-action:manipulation}.mobile-controls button:active{transform:translateY(4px);box-shadow:0 3px 0 #050505;background:#2b090d}
.controls-help{margin:22px 0 0;color:#777;font-size:.86rem;text-align:center}
.leaderboard{width:min(100%,700px);margin:42px auto 0;padding:24px;border:1px solid var(--border);border-radius:26px;background:rgba(255,255,255,.035)}
.leaderboard-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:16px}.leaderboard-heading h2{margin:0;font-size:clamp(1.8rem,5vw,2.7rem);letter-spacing:-.045em}.refresh-button{padding:9px 14px;border:1px solid var(--border);border-radius:999px;background:#111;color:#ddd;font-weight:800;cursor:pointer}.refresh-button:disabled{opacity:.45}
.records-list{display:grid;gap:8px;margin:0;padding:0;list-style:none;counter-reset:record}.record-row{display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:12px;padding:12px 14px;border:1px solid rgba(255,255,255,.08);border-radius:15px;background:rgba(0,0,0,.26)}.record-row:first-child{border-color:rgba(255,67,79,.45);background:rgba(150,4,16,.13)}.record-rank{display:grid;width:30px;height:30px;place-items:center;border-radius:50%;background:rgba(255,255,255,.08);font-size:.8rem;font-weight:950}.record-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.record-value{color:#ff737d;font-weight:950}.records-empty{padding:22px;color:#888;text-align:center}
@media(max-width:820px){.game-header{grid-template-columns:1fr auto}.game-brand{display:none}.game-heading{display:block}.score-board{margin-top:24px}.mobile-controls{display:block}}
@media(max-width:520px){.game-page{padding-top:24px}.game-heading h1{font-size:clamp(2.7rem,14vw,4.4rem)}.game-heading p:not(.eyebrow){font-size:.94rem}.score-board{grid-template-columns:repeat(3,1fr)}.score-board div{padding:11px 8px;border-radius:14px}.score-board strong{font-size:1.25rem}.board-shell{border-radius:20px}.game-overlay{padding:12px}.overlay-card{padding:22px 16px;border-radius:22px}.overlay-card>img{width:70px;height:70px}.mobile-controls{width:228px}.mobile-controls button{width:66px;height:54px}.leaderboard{padding:16px;border-radius:20px}.record-row{grid-template-columns:34px 1fr auto;padding:10px}.record-value{font-size:.86rem}}
@media(max-width:380px){.overlay-card>img{display:none}.overlay-card h2{font-size:2rem}.overlay-card p:not(.eyebrow):not(.form-error):not(.control-note):not(.record-message){font-size:.83rem}.player-field{margin-top:12px}.player-field input{padding:11px 13px}.overlay-card button{margin-top:11px;padding:11px 20px}}
@media(prefers-reduced-motion:reduce){.overlay-card button{transition:none}}