*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#121212;--p1:#1e1e1e;--p2:#2a2a2a;--border:#2a2a2a;
  --text:#e0e0e0;--dim:#aaa;
  --accent:#e8d900;--accent-h:#f5e53b;--accent-glow:rgba(232,217,0,.28);--accent-soft:rgba(232,217,0,.12);
  --win:#4caf50;--lose:#ff5252;--hit:#c41e1e;--miss:#1e2e42;--scan:rgba(232,217,0,.62);
}
body{
  background:
    radial-gradient(ellipse at 20% -10%,rgba(232,217,0,.08),transparent 60%),
    radial-gradient(ellipse at 80% 5%,rgba(90,120,160,.07),transparent 55%),
    var(--bg);
  background-attachment:fixed;color:var(--text);font-family:'Titillium Web',sans-serif;min-height:100vh
}
.container{max-width:1080px;margin:0 auto;padding:20px;position:relative}
.top-bar{display:flex;align-items:center;gap:20px;width:100%;padding:12px 24px;background:var(--p1);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;box-sizing:border-box}
.brand{flex-shrink:0}
.brand-link{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-link .logo{width:40px;height:40px;object-fit:contain;filter:drop-shadow(0 0 6px rgba(232,217,0,.35))}
.brand-link h1{font-size:20px;margin:0;font-weight:700;color:var(--text);letter-spacing:.5px;white-space:nowrap}
.brand-link h1 .accent{color:var(--accent)}
.breadcrumb{flex:1;display:flex;align-items:center;gap:8px;font-size:.9rem}
.breadcrumb-item{display:flex;align-items:center;gap:8px}
.breadcrumb-item:not(:last-child)::after{content:'/';color:var(--dim)}
.breadcrumb-item a{color:var(--dim);text-decoration:none;transition:color .2s}
.breadcrumb-item a:hover{color:var(--accent)}
.breadcrumb-item:last-child a{color:var(--text);font-weight:500}
.hidden{display:none!important}
.subtitle{color:var(--dim);max-width:640px;margin:18px auto 4px;line-height:1.5;text-align:center;font-size:1rem}
.tool-header{text-align:center;padding:2rem 1rem 1rem}
.tool-header .logo{max-width:100px;margin-bottom:.5rem;filter:drop-shadow(0 0 18px rgba(232,217,0,.25))}
.tool-header h1{font-size:2.5rem;font-weight:700}
.tool-header h1 span{color:var(--accent);text-shadow:0 0 24px var(--accent-glow)}
.howto{max-width:640px;margin:14px auto 18px;text-align:center;color:var(--dim);font-size:.88rem;line-height:1.6}
.howto strong{color:var(--accent)}
.howto-toggle{display:block;margin:14px auto 0;background:none;border:1px solid var(--p2);color:var(--dim);border-radius:6px;padding:5px 14px;font-size:.74rem;letter-spacing:1px;text-transform:uppercase;cursor:pointer;transition:border-color .2s,color .2s}
.howto-toggle:hover{border-color:var(--accent);color:var(--accent)}
.howto[hidden]{display:none}

/* pilot bar + faction */
.pilot-bar{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin:10px 0 14px}
.pilot-status{color:var(--dim);font-size:.9rem}
.pilot-status.logged-in{color:var(--accent);font-weight:700}
.login-btn,.logout-btn{padding:7px 16px;border-radius:6px;font-weight:700;border:none;cursor:pointer;font-family:inherit}
.login-btn{background:linear-gradient(180deg,#f5e53b,var(--accent) 60%,#d4c700);color:#1a0e08}
.logout-btn{background:var(--p1);color:var(--dim);border:1px solid var(--border)}
.login-btn:hover{filter:brightness(1.08)}
.faction-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0}
.faction-btn{background:var(--p1);border:1px solid var(--p2);border-radius:10px;padding:12px 8px;cursor:pointer;color:var(--text);transition:border-color .2s,transform .15s}
.faction-btn:hover{border-color:var(--accent);transform:translateY(-2px)}
.faction-btn.active{border-color:var(--accent);box-shadow:0 0 18px var(--accent-glow);background:linear-gradient(180deg,rgba(232,217,0,.14),var(--p1))}
.faction-btn .f-name{display:block;font-weight:700;letter-spacing:1px}
.faction-btn .f-sub{font-size:.72rem;color:var(--dim)}
.diff-row{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:12px 0}
.diff-btn{padding:6px 14px;border-radius:999px;border:1px solid var(--p2);background:var(--p1);color:var(--dim);cursor:pointer;font-weight:700;font-size:.8rem}
.diff-btn.active{background:var(--accent);color:#1a0e08;border-color:var(--accent)}
.diff-btn:hover{border-color:var(--accent);color:var(--accent)}
.diff-btn.active:hover{color:#1a0e08}

/* controls */
.controls{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:14px 0}
.ctrl-btn{padding:8px 16px;border-radius:6px;border:1px solid var(--p2);background:var(--p1);color:var(--text);cursor:pointer;font-weight:700}
.ctrl-btn:hover{border-color:var(--accent);color:var(--accent)}
.ctrl-btn:disabled{opacity:.45;cursor:not-allowed}
.ctrl-btn.primary{background:linear-gradient(180deg,#f5e53b,var(--accent));color:#1a0e08;border-color:var(--accent)}
.ctrl-btn.scan.active{background:rgba(232,217,0,.18);border-color:var(--accent);color:var(--accent)}
.ctrl-btn.doom.ready{border-color:#ff5252;color:#ff5252}
.status-bar{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;font-size:.88rem;margin:8px 0}
.status-pill{background:var(--p1);border:1px solid var(--p2);border-radius:999px;padding:5px 12px;color:var(--dim)}
.status-pill strong{color:var(--accent)}

/* boards */
.boards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:16px 0}
.board-wrap{background:linear-gradient(180deg,var(--p1),#1a1a1a);border:1px solid var(--p2);border-radius:12px;padding:10px 10px 12px;box-shadow:0 6px 20px rgba(0,0,0,.35);position:relative}
.board-title{font-size:.75rem;letter-spacing:2px;text-transform:uppercase;color:var(--dim);margin-bottom:6px;text-align:center}
.board{--cols:10;display:grid;grid-template-columns:repeat(var(--cols),1fr);gap:3px;background:rgba(255,255,255,.02);padding:6px;border-radius:8px;position:relative}
.cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;font-size:.62rem;font-weight:700;background:var(--p1);border:1px solid var(--p2);border-radius:4px;cursor:pointer;user-select:none;position:relative;overflow:hidden}
.cell:hover{border-color:var(--accent)}
.cell.hit{background:var(--hit);color:#fff;border-color:#e53935}
.cell.miss{background:var(--miss);color:var(--dim)}
.cell.scan-hit{outline:2px solid var(--scan);box-shadow:0 0 12px rgba(232,217,0,.35)}
.cell.scan-miss{opacity:.7}
.cell.ship{background:rgba(232,217,0,.18)!important;border-color:var(--accent)!important;box-shadow:inset 0 0 8px rgba(232,217,0,.25)}
.cell.ship::after{content:''}
.cell.hover-ok{background:rgba(232,217,0,.28)!important;border-color:var(--accent)!important;box-shadow:0 0 10px var(--accent-glow)}
.cell.hover-bad{background:rgba(196,30,30,.35)!important;border-color:var(--hit)!important}
.cell.sunk{background:linear-gradient(180deg,#5a0808,#220808);color:#fff;border-color:#7a1a1a}
.cell.sunk::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 60%,rgba(255,60,40,.25),transparent 70%);z-index:0}
.cell img{width:70%;height:70%;object-fit:contain;pointer-events:none}
.coord{display:flex;align-items:center;justify-content:center;font-size:.62rem;font-weight:700;color:var(--dim);user-select:none;pointer-events:none}
.row-lab{aspect-ratio:1}
.col-lab{padding:2px 0}
.cell.fog{filter:grayscale(1) brightness(.45);opacity:.55}
@keyframes sunkPulse{0%,100%{filter:brightness(1)}50%{filter:brightness(1.35)}}
.board.enemy .cell{cursor:crosshair}
.legend{font-size:.7rem;color:var(--dim);text-align:center;margin-top:6px}
/* SVG ship silhouettes — one overlay per ship, natural aspect, centred on its cells */
.ship-img{position:absolute;z-index:1;pointer-events:none;object-fit:contain;background:transparent;border:none}
.sil-gold{filter:invert(1) sepia(1) saturate(5) hue-rotate(8deg);opacity:.92}
.sil-dmg{filter:invert(1) sepia(1) saturate(6) hue-rotate(330deg) brightness(1.05);opacity:.85}
.sil-hit{filter:invert(1) sepia(1) saturate(6) hue-rotate(330deg) brightness(1.1);opacity:1}
.sil-preview{filter:invert(1) sepia(1) saturate(4) hue-rotate(8deg);opacity:.38}
.sil-sunk{filter:invert(1) sepia(1) saturate(6) hue-rotate(-32deg);opacity:1}
.cell-mark{position:absolute;z-index:2;border-radius:50%;pointer-events:none}
.mark-hit{inset:16%;background:radial-gradient(circle at 50% 45%,#ff8a80,#c41e1e 70%);box-shadow:0 0 6px rgba(255,60,50,.8)}
.mark-miss{inset:28%;background:#0e1a24;border:1px solid #335;box-shadow:inset 0 0 4px #000}

/* fleet list */
.fleet{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:10px 0}
.ship-chip{display:flex;align-items:center;gap:6px;background:var(--p1);border:1px solid var(--p2);border-radius:999px;padding:4px 10px;font-size:.78rem}
.ship-chip img{width:22px;height:22px;object-fit:contain}
.ship-chip.sunk{opacity:.45;text-decoration:line-through}
.ship-chip.hit{border-color:rgba(255,82,82,.5)}

/* result + lb */
#resultOverlay{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:20px;gap:10px;background:rgba(0,0,0,.72);backdrop-filter:blur(3px)}
#resultMsg{font-size:1.5rem;font-weight:700}
#resultMsg.correct{color:var(--win)} #resultMsg.wrong{color:var(--lose)} #resultMsg.tie{color:var(--accent)}
.lb-section{margin:22px 0}
.lb-panel-btn{display:block;margin:0 auto;max-width:480px;width:100%;background:var(--p1);border:1px solid var(--p2);border-radius:10px;padding:10px;font-weight:700;cursor:pointer}
.lb-panel-btn:hover{border-color:var(--accent);color:var(--accent)}
.lb-panel{max-width:720px;margin:12px auto 0;background:rgba(0,0,0,.35);border:1px solid var(--border);border-radius:10px;padding:12px}
.lb-tabs{display:flex;gap:6px;justify-content:center;margin-bottom:10px}
.lb-tab{padding:5px 10px;border-radius:999px;border:1px solid var(--p2);background:var(--p1);cursor:pointer;font-size:.78rem}
.lb-tab.active{background:var(--accent);color:#1a0e08;border-color:var(--accent)}
.lb-row{display:grid;grid-template-columns:40px 1fr auto auto;gap:8px;padding:6px 8px;border-bottom:1px solid rgba(255,255,255,.05);font-size:.88rem}
.lb-row.me{background:rgba(232,217,0,.08);border-radius:6px}
.lb-rank{color:var(--dim);font-weight:700}
.lb-isk{color:var(--accent);font-weight:700}
.lb-empty{text-align:center;color:var(--dim);padding:10px}

/* game over */
#gameOverOverlay{position:fixed;inset:0;background:rgba(0,0,0,.86);display:flex;align-items:center;justify-content:center;z-index:100}
.go-box{background:linear-gradient(180deg,#1d1d2a,#15151e);border:1px solid var(--accent);border-radius:16px;padding:28px;max-width:420px;width:90%;text-align:center;box-shadow:0 0 40px rgba(232,217,0,.18)}
.go-title{color:var(--accent);letter-spacing:3px;margin-bottom:12px}
.go-row{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--p2)}
.go-row strong{color:var(--accent)}
.go-actions{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:14px}

/* footer */
footer{text-align:center;padding:1.5rem;color:var(--dim);border-top:1px solid var(--p2);margin-top:20px}

/* mobile */
@media(max-width:820px){.boards{grid-template-columns:1fr}.faction-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.faction-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:500px){.tool-header h1{font-size:1.8rem}.cell{font-size:.5rem}.top-bar{flex-wrap:wrap;gap:10px;padding:10px 16px}.breadcrumb{flex:0 0 100%;order:3;justify-content:flex-start}}