/* Sea Battle - navy chart look: deep water grid, steel ships, brass buttons. */
.sb{--sea:#1b6a9c;--sea-2:#12507a;--deep:#0b3a5c;--steel:#8f9db0;--steel-d:#4f5d70;--brass:#f2b632;--ink:var(--color-ink,#1e1b2e);--paper:#fffdf5;--line:#d9cfb4;--fire:#ff6a2b;font-family:var(--font-body,'Plus Jakarta Sans',system-ui,sans-serif);color:var(--ink);position:relative}
.sb [hidden]{display:none!important}
.sb button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}
.sb button:focus-visible,.sb input:focus-visible{outline:3px solid var(--color-focus,#2563eb);outline-offset:2px}
.sb-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:.5rem 1rem;border:2px solid var(--ink);border-radius:999px;background:var(--brass);font-weight:800;font-size:.92rem;box-shadow:0 4px 0 var(--ink);transition:transform .08s,box-shadow .08s}
.sb-btn:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.sb-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:0 2px 0 var(--ink)}
.sb-btn--ghost{background:#fff}
.sb-btn--sm{min-height:38px;padding:.3rem .8rem;font-size:.78rem;box-shadow:0 3px 0 var(--ink)}
.sb-btn--fire{background:var(--fire);color:#fff;width:100%;font-size:1rem;min-height:52px}

.sb h2{font-size:1.05rem;margin:0 0 .5rem;font-weight:800}
.sb-seg{display:grid;gap:.45rem;margin:.3rem 0 .8rem}
.sb-seg--2{grid-template-columns:1fr 1fr}.sb-seg--3{grid-template-columns:repeat(3,1fr)}
.sb-seg button{border:2px solid var(--ink);border-radius:12px;background:#fff;min-height:56px;font-weight:800;font-size:.85rem;line-height:1.15;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.15rem}
.sb-seg button small{font-weight:600;font-size:.68rem;color:#5b5670}
.sb-seg button[aria-pressed=true]{background:var(--deep);color:#fff;box-shadow:0 4px 0 var(--ink)}
.sb-seg button[aria-pressed=true] small{color:#bfe0f5}
.sb-toggle{width:100%;border:2px solid var(--ink);border-radius:12px;background:#fff;min-height:48px;display:flex;align-items:center;justify-content:space-between;padding:0 .9rem;font-weight:800;font-size:.85rem;margin-bottom:.8rem}
.sb-toggle small{font-weight:600;color:#5b5670;font-size:.7rem;margin-left:.4rem}
.sb-toggle::after{content:"OFF";font-family:var(--font-label,monospace);font-size:.7rem;border:2px solid var(--ink);border-radius:999px;padding:.1rem .5rem;background:#eee}
.sb-toggle[aria-pressed=true]::after{content:"ON";background:var(--brass)}
.sb-names{display:grid;grid-template-columns:1fr 1fr;gap:.45rem;margin-bottom:.8rem}
.sb-names input{border:2px solid var(--ink);border-radius:10px;padding:.55rem .6rem;font:inherit;font-size:.9rem;background:#fff;min-width:0}
.sb-statline{font-family:var(--font-label,monospace);font-size:.75rem;color:#5b5670;text-align:center;margin:.7rem 0 0}
#sb-setup .sb-btn{width:100%}#sb-setup .sb-btn+.sb-btn{margin-top:.6rem;background:#fff}

.sb-top{display:flex;align-items:center;justify-content:space-between;gap:.5rem;margin-bottom:.4rem}
.sb-title{font-family:var(--font-label,monospace);font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:#41607a}
.sb-status{min-height:2.6em;text-align:center;font-weight:800;font-size:.9rem;margin:.1rem 0 .5rem;display:flex;align-items:center;justify-content:center;line-height:1.25}
.sb-tabs{display:grid;grid-template-columns:1fr 1fr;gap:.4rem;margin-bottom:.5rem}
.sb-tabs button{border:2px solid var(--ink);border-radius:999px;background:#fff;min-height:40px;font-weight:800;font-size:.8rem}
.sb-tabs button[aria-pressed=true]{background:var(--deep);color:#fff}

/* boards */
.sb-board{display:grid;grid-template-columns:16px repeat(10,1fr);gap:0;background:var(--deep);border:3px solid var(--ink);border-radius:12px;padding:3px;touch-action:manipulation;user-select:none;-webkit-user-select:none}
.sb-board .sb-lab{display:flex;align-items:center;justify-content:center;font-family:var(--font-label,monospace);font-size:.58rem;font-weight:700;color:#9fc7e3;height:14px}
.sb-board .sb-lab:nth-child(n+12):nth-child(11n+1){height:auto}
.sb-board.sb-placing{touch-action:none}
.sb-cell{position:relative;aspect-ratio:1;min-width:0;padding:0;border:0;border-right:1px solid #ffffff22;border-bottom:1px solid #ffffff22;background:linear-gradient(160deg,var(--sea),var(--sea-2));overflow:visible}
.sb-cell:nth-child(odd){filter:brightness(1.04)}
.sb-cell:disabled{cursor:default}
.sb-attack .sb-cell.can:hover{background:#2a82b8}
.sb-cell.ship{background:linear-gradient(180deg,#a9b6c7,var(--steel-d));border-color:#34404f55}
.sb-cell.ship.hz{border-top:2px solid #cbd5e1;border-bottom:2px solid #3a4658}
.sb-cell.ship.vt{border-left:2px solid #cbd5e1;border-right:2px solid #3a4658}
.sb-cell.ship.hz.bow{border-radius:50% 0 0 50%/50% 0 0 50%}.sb-cell.ship.hz.stern{border-radius:0 8px 8px 0}
.sb-cell.ship.vt.bow{border-radius:50% 50% 0 0/50% 50% 0 0}.sb-cell.ship.vt.stern{border-radius:0 0 8px 8px}
.sb-cell.ship.mine::after{content:"";position:absolute;inset:32%;border-radius:50%;background:#0003}
.sb-cell.ship.is-sunk{background:linear-gradient(180deg,#5a5463,#2c2833)}
.sb-cell.miss::after{content:"";position:absolute;inset:34%;border-radius:50%;background:#ffffffd0;box-shadow:0 0 0 2px #ffffff55}
.sb-cell.hit::before{content:"";position:absolute;inset:14%;border-radius:50%;background:radial-gradient(circle,#fff3a0 0,#ffb21e 30%,var(--fire) 62%,#c01d0f 100%);box-shadow:0 0 6px 1px #ff6a2b99;z-index:1}
.sb-cell.hit.sunk::before{background:radial-gradient(circle,#ffd0c0 0,#e53f2d 55%,#6e0f0a 100%);box-shadow:0 0 5px #0008}
.sb-cell.is-new.miss::after{animation:sb-splash .7s ease-out}
.sb-cell.is-new.hit::before{animation:sb-boom .7s ease-out}
.sb-cell.is-new.sunk{animation:sb-shake .5s}
@keyframes sb-splash{0%{transform:scale(.2);box-shadow:0 0 0 0 #fff}60%{transform:scale(1.4);box-shadow:0 0 0 10px #fff4}100%{transform:scale(1)}}
@keyframes sb-boom{0%{transform:scale(.1)}50%{transform:scale(1.7);filter:brightness(1.6)}100%{transform:scale(1)}}
@keyframes sb-shake{25%{transform:translate(-2px,1px)}75%{transform:translate(2px,-1px)}}
.sb-cell.is-aim{outline:3px solid var(--brass);outline-offset:-3px;z-index:2;background:#2f8fc7}
.sb-cell.is-aim::after{content:"";position:absolute;inset:0;background:linear-gradient(var(--brass),var(--brass)) center/2px 100% no-repeat,linear-gradient(var(--brass),var(--brass)) center/100% 2px no-repeat}
.sb-cell.pv-ok{background:#2fbf71!important}.sb-cell.pv-bad{background:#e0483d!important}
.sb-mini{width:118px;grid-template-columns:10px repeat(10,1fr);padding:2px;border-width:2px;border-radius:8px;flex:none;cursor:pointer}
.sb-mini .sb-lab{font-size:.4rem;height:9px;color:#6a9bbd}
.sb-mini .sb-cell{border-width:0 .5px .5px 0}
.sb-mini .sb-cell.is-new{animation:none}
.sb-mini .sb-cell.hit::before{inset:8%}
.sb-mini-wrap{display:flex;gap:.7rem;align-items:flex-start;margin-top:.7rem}
.sb-mini-cap{font-family:var(--font-label,monospace);font-size:.7rem;font-weight:700;color:#41607a;margin:0 0 .3rem}
.sb-side{flex:1;min-width:0}
.sb-fleetrow{display:flex;gap:.25rem;align-items:center;margin:.25rem 0;font-family:var(--font-label,monospace);font-size:.68rem;font-weight:700}
.sb-fleetrow span{width:3.6em;color:#5b5670}
.sb-fleetrow i{font-style:normal;width:22px;height:20px;border-radius:5px;background:var(--steel);border:2px solid var(--ink);display:inline-flex;align-items:center;justify-content:center;color:var(--ink)}
.sb-fleetrow i.down{background:#c0392b;color:#fff;text-decoration:line-through}
.sb-fire{margin-top:.7rem}
.sb-endturn{margin-top:.7rem;width:100%}

/* placement */
.sb-tray{display:grid;grid-template-columns:repeat(5,1fr);gap:.3rem;margin:.7rem 0 .5rem;touch-action:none}
.sb-chip{border:2px solid var(--ink);border-radius:10px;background:#fff;padding:.35rem .1rem;display:flex;flex-direction:column;align-items:center;gap:.25rem;touch-action:none;min-height:56px}
.sb-chip b{font-size:.56rem;font-weight:800;line-height:1}
.sb-blocks{display:flex;gap:1px}.sb-blocks i{width:8px;height:12px;background:var(--steel-d);border-radius:2px}
.sb-chip.is-placed{opacity:.45}
.sb-chip.is-sel{background:var(--brass);opacity:1;box-shadow:0 3px 0 var(--ink)}
.sb-pbtns{display:grid;grid-template-columns:1fr 1fr 1fr;gap:.4rem}
.sb-pbtns .sb-btn{min-height:42px;font-size:.75rem;padding:.3rem .2rem}
#sb-ready{width:100%;margin-top:.6rem}

/* hand-over + result */
.sb-hand,.sb-over{background:var(--paper);border:3px solid var(--ink);border-radius:16px;padding:1.2rem 1rem;text-align:center;box-shadow:0 5px 0 var(--ink)}
.sb-hand{background:var(--deep);color:#fff}
.sb-hand h2{font-size:1.5rem;margin:.4rem 0}.sb-hand p{font-size:.9rem;margin:.4rem 0 1rem;color:#cfe6f6}
.sb-hand .sb-btn{width:100%}
.sb-over h2{font-size:1.4rem;margin:0 0 .4rem}
.sb-over ul{list-style:none;margin:.5rem 0;padding:0}.sb-over li{display:flex;justify-content:space-between;padding:.4rem .6rem;border-bottom:1px dashed var(--line);font-size:.9rem}
.sb-over li b{font-family:var(--font-label,monospace)}
.sb-over-total{font-size:1.15rem;font-weight:800;margin:.5rem 0 .1rem;color:#0f6b3a}
.sb-over-cap,.sb-over-note{font-size:.76rem;color:#5b5670;margin:.2rem 0 .8rem}
.sb-over .sb-btn{width:100%}

.sb-toasts{position:fixed;left:50%;top:76px;transform:translateX(-50%);display:flex;flex-direction:column;gap:6px;align-items:center;z-index:50;pointer-events:none;width:min(92vw,360px)}
.sb-toast{background:var(--ink);color:#fff;border-radius:999px;padding:.45rem 1rem;font-weight:800;font-size:.85rem;box-shadow:0 4px 14px #0005;animation:sb-pop 2.4s ease forwards;white-space:nowrap}
.sb-toast--big{background:var(--fire);font-size:1rem}.sb-toast--dim{background:#5b5670}
.sb-toast--coin{background:var(--brass);color:var(--ink);border:2px solid var(--ink);display:flex;align-items:center;gap:.4rem;animation-duration:3.4s}
.sb-coin{width:18px;height:18px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff6a8,#e0a800);border:2px solid var(--ink)}
@keyframes sb-pop{0%{opacity:0;transform:translateY(12px) scale(.9)}12%{opacity:1;transform:none}80%{opacity:1}100%{opacity:0;transform:translateY(-14px)}}
@media (prefers-reduced-motion:reduce){.sb-toast{animation-duration:.01s;animation-fill-mode:none}.sb-cell.is-new::before,.sb-cell.is-new::after,.sb-cell.is-new{animation:none!important}}

.sb-guide{max-width:640px;margin:0 auto 2rem;padding:1.2rem 1rem;background:var(--color-well,#fffdf0);border:3px solid var(--color-ink,#1e1b2e);border-radius:16px;font-size:.95rem;line-height:1.6;color:var(--color-ink,#1e1b2e);box-sizing:border-box}
.sb-guide h2{font-size:1.25rem;margin:1.4rem 0 .5rem;font-weight:800;line-height:1.25}.sb-guide h2:first-child{margin-top:0}
.sb-guide h3{font-size:1rem;margin:1rem 0 .3rem;font-weight:800}
.sb-guide p{margin:.5rem 0}.sb-guide ul,.sb-guide ol{margin:.5rem 0 .5rem 1.2rem;padding:0}.sb-guide li{margin:.25rem 0}
.sb-guide table{border-collapse:collapse;width:100%;font-size:.85rem;margin:.6rem 0}.sb-guide th,.sb-guide td{border:1px solid #cfc7aa;padding:.3rem .5rem;text-align:left}.sb-guide th{background:#f4eed8}
.sb-guide details{border-top:1px solid #cfc7aa;padding:.5rem 0}.sb-guide summary{font-weight:700;cursor:pointer}
@media (max-width:480px){.sb-guide{margin-left:16px;margin-right:16px;padding:1rem .85rem}}