:root{font-family:Georgia,'Times New Roman',serif;color:#f8f1df;background:#06304a}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(#7cc5eb55,#06304abb),url('assets/sea-background.png') center/cover fixed}.game-shell{min-height:100vh;padding:18px 4vw 24px;background:linear-gradient(180deg,#ffffff22,#00182744)}.masthead{display:grid;grid-template-columns:1fr 1.35fr 1fr;gap:18px;align-items:center;max-width:1400px;margin:auto}.title{text-align:center;text-shadow:0 2px 2px #fff}.title span{color:#a97323;font-size:30px}.title h1{margin:-4px 0 0;color:#062b4b;font-size:clamp(36px,5vw,72px);letter-spacing:.05em}.title p{margin:0;color:#8a5b25;font-weight:bold;letter-spacing:.24em}.player-card{display:flex;align-items:center;gap:14px;justify-content:flex-start;padding:10px 18px;border:2px solid #d8aa59;border-radius:18px;background:linear-gradient(145deg,#0c3e65,#031e37);box-shadow:0 8px 18px #00101d77}.player-card.computer{justify-content:flex-end;text-align:right}.player-card.active{box-shadow:0 0 0 3px #f4cf71,0 8px 18px #00101d77}.player-card small,.player-card strong{display:block}.player-card small{font-size:20px}.player-card strong{margin-top:5px;color:#f5ce73}.avatar{display:grid;place-items:center;width:60px;height:60px;border-radius:50%;font-size:32px;background:#edf7fa;border:3px solid #d4a34c}.boards{display:grid;grid-template-columns:1fr 1fr;gap:28px;max-width:1220px;margin:22px auto}.board-panel{overflow:hidden;border:3px solid #c89743;border-radius:18px;background:#062b49dd;box-shadow:0 12px 30px #001624aa}.board-title{display:flex;justify-content:space-between;align-items:center;padding:12px 22px;border-bottom:2px solid #b27a32;text-transform:uppercase}.board-title h2{margin:0;font-size:24px;letter-spacing:.08em}.board-title span{color:#f6d68a}.board{position:relative;display:grid;grid-template-columns:repeat(10,1fr);aspect-ratio:1;margin:18px;background:linear-gradient(#006d8bbb,#002f50aa),url('assets/sea-background.png') center/cover;border:1px solid #c8eaf5}.cell{position:relative;border-right:1px solid #b9deea99;border-bottom:1px solid #b9deea99;background:transparent;cursor:default}.enemy.ready .cell:not(.used){cursor:crosshair}.enemy.ready .cell:not(.used):hover,.cell.selected{background:#f8d77566;box-shadow:inset 0 0 0 3px #ffe399}.lesson-panel{max-width:1320px;margin:auto;padding:18px 28px;border:3px solid #b8843d;border-radius:18px;color:#17212a;background:linear-gradient(100deg,#ead8b3,#fffaf0,#e5cfa6);box-shadow:0 12px 28px #00162499;text-align:center}.turn{margin:0;color:#0b5e46;font-weight:bold;letter-spacing:.18em}.lesson-panel h2{margin:8px 0 16px;font-size:clamp(22px,3vw,34px)}.answers{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:900px;margin:auto}.answers button,.fire-button,.menu-button{min-height:54px;border:2px solid #9e7746;border-radius:14px;font:700 22px Georgia;color:#142332;background:linear-gradient(#fffdf7,#ded6c9);box-shadow:0 4px 7px #59432044;cursor:pointer}.answers button:hover{transform:translateY(-2px)}.answers button.correct{color:white;background:#08705e}.answers button.wrong{color:white;background:#982f35}.result-row{display:grid;grid-template-columns:170px 1fr 170px;align-items:center;gap:20px;margin-top:16px}.result-row p{font:700 19px Arial;color:#174d3d}.fire-button,.menu-button{color:white;background:linear-gradient(#174e73,#062c4b)}.fire-button:disabled{opacity:.45;cursor:not-allowed}.effect{position:absolute;z-index:4;pointer-events:none;width:240%;height:240%;left:-70%;top:-70%;object-fit:contain}.marker{position:absolute;inset:22%;z-index:3;border-radius:50%}.marker.miss{border:3px solid #eafcff;background:#dffaff88}.marker.hit{background:#fb4b24;box-shadow:0 0 14px 6px #ffb12f}.ship{position:absolute;z-index:1;height:82%;object-fit:contain;filter:drop-shadow(0 4px 4px #001);pointer-events:none}@media(max-width:800px){.game-shell{padding:10px}.masthead{grid-template-columns:1fr 1fr}.title{grid-column:1/-1;grid-row:1}.player-card{grid-row:2}.boards{grid-template-columns:1fr}.board-panel:first-child{display:none}.lesson-panel{padding:14px}.answers{grid-template-columns:1fr}.result-row{grid-template-columns:1fr 1fr}.result-row p{grid-column:1/-1;grid-row:1}.title h1{font-size:38px}}