:root{color-scheme:dark;--bg:#050812;--panel:#0b1024;--line:#1a3156;--cyan:#35e8ff;--orange:#ff9c35;--ink:#e9f7ff}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 50% -20%,#14336a 0,transparent 42%),var(--bg);color:var(--ink);font-family:system-ui,sans-serif}main{width:min(1100px,92vw);margin:0 auto;padding:46px 0 28px}header{text-align:center}.eyebrow{font:700 .76rem ui-monospace,monospace;letter-spacing:.22em;color:var(--cyan)}h1{font:900 clamp(2.6rem,8vw,5.5rem)/.9 ui-monospace,monospace;letter-spacing:-.07em;text-transform:uppercase;margin:.2em 0}h1 span{color:var(--cyan);text-shadow:0 0 24px #35e8ff88}.intro,.legal{color:#a6b8cf;font-size:1.1rem}.panel{max-width:650px;margin:42px auto;padding:30px;border:1px solid var(--line);background:#0b1024cc;box-shadow:0 0 40px #0b6e9d18}.panel h2{font:700 1.25rem ui-monospace,monospace;text-transform:uppercase}.actions{display:grid;grid-template-columns:1fr 1.2fr .8fr;gap:12px;align-items:end}.solo-button{width:100%;margin:8px 0 0}.mode-note{margin:10px 0 25px;color:#b7cae5}button,input{border:1px solid #35537c;background:#080d1d;color:var(--ink);font:700 1rem system-ui,sans-serif;min-height:45px;padding:0 14px}button{cursor:pointer;text-transform:uppercase;letter-spacing:.08em}button:hover{border-color:var(--cyan);box-shadow:0 0 15px #35e8ff55}.primary{background:var(--cyan);color:#06101e;border-color:var(--cyan);font-weight:700}.primary:hover{box-shadow:0 0 20px #35e8ff}label{display:grid;gap:5px;font-weight:700;color:#b8c6d9}input{width:100%;text-transform:uppercase;letter-spacing:.2em}.message{min-height:1.5em;color:#9bb0cc}.hidden{display:none!important}.hud{display:flex;justify-content:space-between;gap:15px;margin:25px 0 12px;padding:13px 16px;border:1px solid var(--line);background:var(--panel)}.hud div{display:grid}.hud span{font-size:.75rem;letter-spacing:.15em;color:#89a0be}.hud strong{font:700 1rem ui-monospace,monospace}.arena-wrap{position:relative;border:1px solid #235884;box-shadow:0 0 35px #0a8ac442;background:#020713}canvas{width:100%;height:auto;display:block}.overlay{position:absolute;inset:0;display:grid;place-items:center;text-align:center;pointer-events:none;font:700 clamp(1.5rem,4vw,3.4rem)/1.2 ui-monospace,monospace;text-transform:uppercase;color:white;text-shadow:0 2px 20px #000;background:#02071366;white-space:pre-line}.controls{display:flex;justify-content:center;gap:35px;font-weight:700;color:#b7cae5}.controls i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:5px}.cyan{background:var(--cyan);box-shadow:0 0 10px var(--cyan)}.orange{background:var(--orange);box-shadow:0 0 10px var(--orange)}#rematch{display:block;margin:18px auto}.legal{text-align:center;font-size:.9rem;margin-top:42px}@media(max-width:600px){main{padding-top:26px}.actions{grid-template-columns:1fr}.hud{font-size:.8rem;gap:8px;padding:10px}.controls{gap:10px;flex-wrap:wrap;margin:12px 0}.controls p{margin:0}.panel{margin:28px auto}}