:root{--bg:#0b1726;--panel:#12243a;--water:#1c3a5e;--grid-line:#2e5480;--text:#e6eef7;--text-muted:#8fa7c0;--ship:#7a8b99;--hit:#e5484d;--sunk:#7a1f24;--miss:#cfe3f5;--valid:#3dd68c;--accent:#f2b33d;--font-sans:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:var(--font-sans);color:var(--text);background:var(--bg);font-size:15px;line-height:1.4}*{box-sizing:border-box}body{background:var(--bg);min-height:100vh;margin:0}button{font:inherit;color:inherit}.app{max-width:880px;margin:0 auto;padding:16px}.header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.title{letter-spacing:.02em;margin:0;font-size:28px}.turn{color:var(--text-muted);border-radius:999px;align-items:center;gap:8px;padding:4px 12px;font-weight:600;display:inline-flex}.turn--player{background:var(--accent);color:var(--bg)}.turn__dot{background:var(--accent);border-radius:50%;width:8px;height:8px;animation:1.2s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:.35}50%{opacity:1}}.btn{border:1px solid var(--grid-line);min-height:36px;color:var(--text);cursor:pointer;background:0 0;border-radius:6px;padding:6px 14px}.btn:hover:not(:disabled){border-color:var(--accent)}.btn:focus-visible,.cell:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn:disabled{opacity:.45;cursor:not-allowed}.btn--primary{background:var(--accent);border-color:var(--accent);color:var(--bg);font-weight:700}.btn--primary:hover:not(:disabled){border-color:var(--text)}.btn[aria-pressed=true]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}@media (pointer:coarse){.btn{min-height:44px}}.placement{background:var(--panel);border-radius:8px;flex-direction:column;gap:10px;margin-bottom:16px;padding:12px;display:flex}.placement__hint{color:var(--text-muted);margin:0}.picker,.actions{flex-wrap:wrap;gap:8px;display:flex}.picker__ship--placed{color:var(--text-muted);text-decoration:line-through}.boards{justify-content:center;align-items:flex-start;gap:24px;display:flex}@media (width<=640px){.boards{flex-direction:column;align-items:center}}.board{flex:0 400px;width:min(400px,100vw - 32px)}.board__heading{margin:0 0 8px;font-size:18px}.grid{grid-template-columns:repeat(11,minmax(0,1fr));gap:2px;display:grid}.grid__label{font-family:var(--font-mono);color:var(--text-muted);aspect-ratio:1;justify-content:center;align-items:center;font-size:12px;display:flex}@media (pointer:coarse){.board{flex:0 auto;width:auto;min-width:0;max-width:calc(100vw - 32px)}.grid-scroll{margin:-4px;padding:4px;overflow-x:auto}.grid{grid-template-columns:24px repeat(10,44px);width:max-content}.grid__label{aspect-ratio:auto;min-height:24px}}.cell{aspect-ratio:1;border:1px solid var(--grid-line);background:var(--water);cursor:default;border-radius:2px;justify-content:center;align-items:center;min-width:0;padding:0;font-weight:800;line-height:1;display:flex;position:relative}.cell--ship{background:var(--ship)}.cell--sunk{background:var(--sunk)}.cell--target{cursor:crosshair}.cell--target:hover{outline:2px solid var(--accent);outline-offset:-2px}.cell--preview-valid:after,.cell--preview-invalid:after{content:"";opacity:.5;pointer-events:none;position:absolute;inset:0}.cell--preview-valid:after{background:var(--valid)}.cell--preview-invalid:after{background:var(--hit)}.cell--placing{cursor:pointer}.marker{pointer-events:none;animation:.15s ease-out marker-in}.marker--miss{background:var(--miss);border-radius:50%;width:28%;height:28%}.marker--hit{color:var(--hit);font-size:clamp(14px,4.5vw,24px)}.cell--sunk .marker--hit{color:var(--text)}.cell--sunk-flash{animation:.5s ease-out sunk-flash}@keyframes marker-in{0%{transform:scale(0)}to{transform:scale(1)}}@keyframes sunk-flash{0%{filter:brightness(2.2)}to{filter:brightness()}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}.fleet{grid-template-columns:repeat(auto-fit,minmax(140px,max-content));justify-content:center;gap:6px 12px;margin:12px 0 0;padding:0 0 0 calc(9.09091% + .181818px);list-style:none;display:grid}@media (pointer:coarse){.fleet{padding-left:26px}}.fleet__ship{justify-content:flex-start;align-items:center;gap:8px;display:flex}.fleet__ship--sunk .fleet__name{color:var(--text-muted);text-decoration:line-through}.fleet__cells{gap:2px;display:inline-flex}.fleet__cell{border:1px solid var(--grid-line);background:var(--water);width:10px;height:10px}.fleet__cell--hit{background:var(--hit);border-color:var(--hit)}#player-board{--player-water:#b8d6f0;--player-grid-line:#4f7397;--player-ship:#2b3a48;--player-hit:#c42a30;--player-miss:#1c3a5e;--player-preview-valid:#18663e;--player-preview-invalid:#9e1f25;--player-focus-inner:#0b1726}#player-board .cell{background:var(--player-water);border-color:var(--player-grid-line)}#player-board .cell--ship{background:var(--player-ship)}#player-board .cell--sunk{background:var(--sunk)}#player-board .cell--preview-valid:after,#player-board .cell--preview-invalid:after{opacity:.85}#player-board .cell--preview-valid:after{background:var(--player-preview-valid)}#player-board .cell--preview-invalid:after{background:var(--player-preview-invalid)}#player-board .marker--miss{background:var(--player-miss)}#player-board .marker--hit{color:var(--player-hit)}#player-board .cell--sunk .marker--hit{color:var(--text)}#player-board .cell:focus-visible{outline-offset:-2px;box-shadow:inset 0 0 0 4px var(--player-focus-inner)}#player-board .fleet__cell{background:var(--player-water);border-color:var(--player-grid-line)}#player-board .fleet__cell--hit{background:var(--player-hit);border-color:var(--player-hit)}.log{background:var(--panel);border-radius:8px;margin-top:24px;padding:12px 16px}.log__heading{margin:0 0 8px;font-size:18px}.log__empty{color:var(--text-muted);margin:0}.log__list{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.log__entry--computer{color:var(--text-muted)}.log__entry:first-child{color:var(--text);font-weight:600}.overlay{z-index:10;background:#0b1726b8;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.dialog{background:var(--panel);border:1px solid var(--grid-line);text-align:center;border-radius:10px;width:min(360px,100%);padding:24px}.dialog__title{color:var(--accent);margin:0 0 4px;font-size:28px}.dialog__text{color:var(--text-muted);margin:0 0 16px}.dialog__stats{justify-content:center;gap:32px;margin:0 0 20px;display:flex}.dialog__stats dt{color:var(--text-muted);font-size:12px}.dialog__stats dd{font-size:22px;font-weight:700;font-family:var(--font-mono);margin:0}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}