@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{color-scheme:dark;--bg:#101f30;--panel:#16283a;--line:#304457;--text:#f0f3ec;--muted:#9caebc;--lime:#d4ed8b;--orange:#ff926e}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 85% 0%,#24415166,transparent 55%),var(--bg);color:var(--text);font-family:'DM Sans',sans-serif}main{max-width:1160px;margin:auto;padding:0 36px}header{height:94px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:15px}header .brand{justify-self:start;white-space:nowrap}header .badge{justify-self:center;white-space:nowrap}#fullscreen{justify-self:end}.brand{font:700 17px 'Space Grotesk',sans-serif;letter-spacing:2px;text-decoration:none;color:var(--text);display:flex;align-items:center;gap:12px}.mark{font-size:38px;color:var(--lime)}.badge,.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:700}.badge{border:1px solid var(--line);border-radius:30px;padding:10px 14px;color:var(--muted)}.intro{padding:42px 0 29px}.eyebrow{color:var(--lime)}h1,h2,h3{font-family:'Space Grotesk',sans-serif}h1{font-size:clamp(36px,5vw,58px);letter-spacing:-2px;margin:14px 0}p{line-height:1.6}.intro>p:last-child{color:var(--muted);font-size:15px}button{font:600 13px 'DM Sans',sans-serif;cursor:pointer;border-radius:6px;transition:background .15s,transform .15s}button:focus-visible{outline:3px solid var(--lime);outline-offset:3px}button:disabled{cursor:default}.secondary,.primary{padding:12px 16px;white-space:nowrap}.secondary{background:transparent;border:1px solid #526374;color:var(--text)}.secondary:hover{background:#ffffff0a}.primary{background:var(--lime);color:var(--bg);border:1px solid var(--lime)}.primary:disabled{opacity:.35}.boards{margin-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:24px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 24px 24px}.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:18px}.panel-heading .eyebrow{color:var(--muted);font-size:9px}h2{font-size:23px;margin:0;letter-spacing:-.6px}.counter{font-size:11px;color:var(--muted);border:1px solid var(--line);padding:7px 9px;border-radius:5px}.board{display:grid;grid-template-columns:22px repeat(10,minmax(0,1fr));gap:3px}.axis{display:flex;justify-content:center;align-items:center;color:#8ca4b7;font:11px monospace;min-height:18px}.cell{border:1px solid #314b60;background:#1c3246;aspect-ratio:1;padding:0;border-radius:3px;position:relative;min-width:0;color:var(--text);font-size:18px}.cell:not(:disabled):hover{background:#3c586a;border-color:var(--lime)}.cell.ship{background:#91afac;border-color:#b7ccc0}.cell.preview{background:#d4ed8b88;border-color:var(--lime)}.cell.invalid{background:#ff926e66;border-color:var(--orange)}.cell.miss:after{content:'';position:absolute;width:6px;height:6px;border-radius:50%;background:#8fa7ba;left:50%;top:50%;transform:translate(-50%,-50%)}.cell.hit{background:#a45745;border-color:var(--orange)}.cell.hit:after{content:'×';color:#ffdfcf;font-size:24px;position:absolute;inset:0;display:grid;place-items:center}.cell.sunk{background:#643f3a;border-color:#b77360}.setup{margin-top:24px;border:1px solid var(--line);border-radius:12px;padding:22px;display:flex;flex-wrap:wrap;gap:20px;align-items:center}.placement{display:flex;align-items:center;flex-wrap:wrap;gap:20px;width:100%}.setup h3{margin:0;font-size:17px}.setup p{font-size:12px;color:var(--muted);margin:7px 0 0}.ship-picker{display:flex;flex:1;gap:7px;flex-wrap:wrap}.ship-option{background:#1c3246;border:1px solid var(--line);color:var(--muted);padding:10px;display:flex;flex-direction:column;align-items:center;gap:7px;flex:1}.ship-option.selected{border-color:var(--lime);color:var(--lime)}.ship-option.placed .mini{color:#91afac}.mini{letter-spacing:2px;font-size:12px;white-space:nowrap}.ship-option span:last-child{font-size:10px}.actions{width:100%;display:flex;align-items:center;flex-wrap:wrap;gap:10px;justify-content:flex-end}footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:28px 0;color:#8197a9;font-size:10px;letter-spacing:1px}footer p{letter-spacing:0;text-align:right}.footer-wave{color:var(--lime);font-size:20px;margin-left:8px}[hidden]{display:none!important}@media(max-width:760px){main{padding:0 16px}header{height:auto;min-height:72px}.intro{padding-top:25px}.boards{grid-template-columns:1fr}.panel{padding:10px 18px 18px}.actions{flex-wrap:wrap}.actions button{flex:1}.ship-picker{flex-basis:100%}.setup{padding:16px}footer{align-items:flex-start}.cell{max-height:50px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

@media(max-width:900px){header{height:auto;min-height:94px;grid-template-columns:minmax(0,1fr) auto;gap:8px 12px;padding:12px 0}header .badge{grid-column:1 / -1;grid-row:2;padding:5px 12px}#fullscreen{grid-column:2;grid-row:1}}
@media(max-width:420px){header .brand{font-size:12px;letter-spacing:1px;gap:6px}#fullscreen{font-size:11px;padding:10px}}

/* End-of-game overlay: stays out of the page layout until the game ends. */
.result-dialog{--result-accent:var(--lime);width:min(500px,calc(100% - 32px));max-height:calc(100dvh - 32px);padding:0;border:1px solid var(--line);border-top:3px solid var(--result-accent);border-radius:18px;background:radial-gradient(ellipse at top,#d4ed8b0d,transparent 60%),var(--panel);color:var(--text);box-shadow:0 24px 90px #0008;overflow:auto}
.result-dialog[data-outcome="loss"]{--result-accent:var(--orange)}
.result-dialog::backdrop{background:#071321b8;backdrop-filter:blur(5px)}
.result-content{padding:30px;text-align:center}
.result-emblem{display:grid;place-items:center;margin:0 auto 18px;width:64px;height:64px;border:1px solid var(--result-accent);border-radius:50%;color:var(--result-accent);font-size:34px;background:#ffffff04}
.result-dialog .eyebrow{color:var(--result-accent);margin:0 0 10px}
.result-dialog h2{font-size:clamp(25px,5vw,34px);letter-spacing:-1px}
.result-description{font-size:14px;color:var(--muted);margin:12px 0 24px}
.result-stats{width:100%;border-collapse:collapse;font-size:13px;text-align:right;font-variant-numeric:tabular-nums}
.result-stats th,.result-stats td{padding:12px 6px;border-bottom:1px solid var(--line)}
.result-stats thead th{font-size:11px;color:var(--muted)}
.result-stats tbody th{text-align:left;font-weight:400;color:var(--muted)}
.result-stats td:nth-child(2){color:var(--lime);font-weight:700}
.result-actions{display:flex;justify-content:center;gap:10px;margin-top:26px;flex-wrap:wrap}
.result-actions button{flex:1}
@media(max-width:420px){.result-content{padding:22px 16px}.result-stats{font-size:12px}.result-actions button{flex-basis:100%}}