:root{
  --sea:#0a3d62; --foam:#7be6ff; --gold:#ffcf3f; --danger:#ff5252;
  --panel:rgba(8,22,40,.86); --line:rgba(123,230,255,.25);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden;background:#04141f;color:#eaf6ff;
  font-family:'Trebuchet MS',system-ui,Segoe UI,sans-serif;-webkit-user-select:none;user-select:none}
canvas{display:block}
.hidden{display:none !important}

/* overlays */
.overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at 50% 30%,#0a3d62 0%,#04141f 70%);z-index:50}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;
  padding:34px 40px;max-width:560px;text-align:center;box-shadow:0 20px 80px rgba(0,0,0,.6);
  backdrop-filter:blur(6px)}
.panel h1{font-size:58px;letter-spacing:6px;background:linear-gradient(90deg,var(--foam),var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 30px rgba(123,230,255,.3)}
.tag{margin:14px 0 22px;line-height:1.5;color:#bfe6ff;font-size:15px}
input{font-family:inherit;font-size:16px;padding:12px 16px;border-radius:10px;border:1px solid var(--line);
  background:rgba(0,0,0,.35);color:#fff;outline:none;width:70%}
input:focus{border-color:var(--foam)}
button{cursor:pointer;font-family:inherit;font-weight:bold;letter-spacing:1px;border:none;border-radius:10px;
  padding:13px 26px;margin-top:16px;font-size:17px;background:linear-gradient(90deg,#1b9cff,#0a6cff);color:#fff;
  transition:transform .08s, filter .2s}
button:hover{filter:brightness(1.15)}
button:active{transform:scale(.96)}
.how{margin-top:22px;font-size:12.5px;color:#9fc4dd;line-height:1.9}
.how b{color:var(--gold)}
.goalline{margin-top:16px;font-size:13px;color:#cfe;background:rgba(255,207,63,.08);
  border:1px solid rgba(255,207,63,.25);border-radius:10px;padding:10px}

/* crosshair + hint */
#crosshair{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);font-size:22px;
  color:rgba(255,255,255,.7);pointer-events:none;text-shadow:0 0 4px #000;z-index:10}
.hint{position:fixed;left:50%;top:58%;transform:translateX(-50%);background:rgba(0,0,0,.55);
  padding:7px 14px;border-radius:8px;font-size:14px;pointer-events:none;z-index:10;opacity:0;transition:opacity .15s}
.hint.show{opacity:1}
.hint b{color:var(--gold)}

/* vitals */
#vitals{position:fixed;left:18px;bottom:18px;display:flex;flex-direction:column;gap:8px;z-index:12}
.bar{display:flex;align-items:center;gap:8px}
.ico{font-size:18px;width:22px;text-align:center;filter:drop-shadow(0 1px 2px #000)}
.track{width:210px;height:14px;background:rgba(0,0,0,.5);border-radius:8px;overflow:hidden;border:1px solid rgba(255,255,255,.15)}
.track.sm{width:90px;height:10px}
.fill{height:100%;width:100%;transition:width .2s}
.fill.hp{background:linear-gradient(90deg,#ff6b6b,#ff2d2d)}
.fill.hunger{background:linear-gradient(90deg,#ffd36b,#ff9f1c)}
.fill.thirst{background:linear-gradient(90deg,#6bd0ff,#1b9cff)}
.fill.shark{background:linear-gradient(90deg,#9be,#39f)}

/* topbar */
#topbar{position:fixed;top:14px;left:50%;transform:translateX(-50%);display:flex;gap:18px;align-items:center;
  background:rgba(0,0,0,.4);padding:8px 18px;border-radius:30px;font-size:15px;z-index:12;border:1px solid var(--line)}
#sharkbar{display:flex;gap:6px;align-items:center}

#endgame{position:fixed;top:64px;left:50%;transform:translateX(-50%);z-index:20;
  background:rgba(180,0,0,.85);padding:10px 26px;border-radius:12px;font-size:22px;font-weight:bold;
  letter-spacing:1px;box-shadow:0 0 40px rgba(255,0,0,.6);animation:pulse 1s infinite}
@keyframes pulse{50%{filter:brightness(1.4)}}

/* hotbar */
#hotbar{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:12}
.slot{width:58px;height:58px;background:rgba(0,0,0,.45);border:2px solid rgba(255,255,255,.18);border-radius:12px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:26px;position:relative}
.slot.active{border-color:var(--gold);box-shadow:0 0 18px rgba(255,207,63,.6)}
.slot .k{position:absolute;top:2px;left:5px;font-size:11px;color:#9fc4dd}
.slot .nm{font-size:9px;color:#cde;position:absolute;bottom:3px}

/* toasts */
#toasts{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;
  gap:6px;align-items:center;z-index:15;pointer-events:none}
.toast{background:rgba(10,30,50,.92);border:1px solid var(--line);padding:8px 16px;border-radius:10px;
  font-size:14px;animation:rise .3s;box-shadow:0 6px 20px rgba(0,0,0,.4)}
@keyframes rise{from{opacity:0;transform:translateY(12px)}}

/* chat */
#chatlog{position:fixed;left:18px;top:60px;width:340px;max-height:34vh;overflow:hidden;z-index:11;
  display:flex;flex-direction:column;gap:3px;font-size:13px;pointer-events:none}
#chatlog .line{background:rgba(0,0,0,.35);padding:3px 9px;border-radius:7px;width:fit-content;max-width:100%}
#chatlog .nm{color:var(--gold);font-weight:bold}
#chatlog .sea{color:var(--foam)}
#chatInput{position:fixed;left:18px;top:calc(60px + 34vh);width:340px;z-index:16}

/* build palette */
#buildbar{position:fixed;bottom:86px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:14;
  background:rgba(0,0,0,.45);padding:8px;border-radius:14px;border:1px solid var(--line)}
.bslot{width:64px;min-height:64px;padding:6px 4px;border-radius:10px;background:rgba(255,255,255,.05);
  border:2px solid transparent;display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer;font-size:11px;text-align:center}
.bslot .bi{font-size:24px}
.bslot.sel{border-color:var(--gold);background:rgba(255,207,63,.12)}
.bslot .cost{font-size:9px;color:#9fc4dd;line-height:1.2}
.bslot.cant{opacity:.45}

/* side panels */
.sidepanel{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:min(720px,92vw);
  max-height:80vh;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:16px;
  padding:20px 24px;z-index:30;backdrop-filter:blur(8px);box-shadow:0 20px 80px rgba(0,0,0,.6)}
.ph{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.ph h2{font-size:22px;color:var(--foam)}
.x{cursor:pointer;font-size:20px;color:#9fc4dd;padding:4px 10px;border-radius:8px}
.x:hover{background:rgba(255,255,255,.1)}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cols h3{font-size:14px;color:var(--gold);margin-bottom:8px;border-bottom:1px solid var(--line);padding-bottom:4px}
.row{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:8px;font-size:14px}
.row:hover{background:rgba(255,255,255,.05)}
.row .ri{font-size:18px;width:24px;text-align:center}
.row .rn{flex:1}
.row .rq{color:#9fc4dd;font-variant-numeric:tabular-nums}
.row.craftable{cursor:pointer}
.row.craftable:hover{background:rgba(123,230,255,.12)}
.row.locked{opacity:.45}
.row .req{font-size:11px;color:#9fc4dd}
.wbtn{width:100%;margin-bottom:14px;background:linear-gradient(90deg,#1b9cff,#0a6cff)}
.stbtn{font-size:11px;padding:3px 9px;margin-top:0;border-radius:7px}

#veilPanel h1{font-size:46px}
.btnrow{display:flex;gap:12px;justify-content:center}

/* secondary vitals */
.bar.sec .ico{font-size:14px}
.fill.oxy{background:linear-gradient(90deg,#a7f3ff,#22d3ee)}
.fill.sta{background:linear-gradient(90deg,#fff59d,#ffd54f)}
.fill.temp{background:linear-gradient(90deg,#8ecbff,#ff8a65)}
#oxyBar,#tempBar{transition:opacity .3s}

/* weather chip */
#weather{opacity:.9}

/* minimap */
#mapwrap{position:fixed;top:14px;right:14px;z-index:12;width:200px;height:200px}
#minimap{width:200px;height:200px;border-radius:12px;border:1px solid var(--line);
  background:rgba(4,20,31,.7);box-shadow:0 6px 24px rgba(0,0,0,.5)}
#compass{position:absolute;top:6px;left:50%;transform:translateX(-50%);font-size:12px;font-weight:bold;
  color:var(--gold);background:rgba(0,0,0,.45);padding:1px 8px;border-radius:8px}

/* crew list */
#crewlist{position:fixed;top:224px;right:14px;z-index:12;display:flex;flex-direction:column;gap:4px;width:200px}
#crewlist .crew{display:flex;align-items:center;gap:6px;background:rgba(0,0,0,.4);padding:4px 8px;border-radius:8px;font-size:12px}
#crewlist .dot{width:10px;height:10px;border-radius:50%}
#crewlist .mini{flex:1;height:6px;background:rgba(0,0,0,.5);border-radius:4px;overflow:hidden}
#crewlist .mini i{display:block;height:100%;background:#ff3d3d}
#crewlist .down{color:#ff6b6b}

/* objective */
#objective{position:fixed;left:18px;top:18px;z-index:11;background:rgba(255,207,63,.1);
  border:1px solid rgba(255,207,63,.3);border-radius:10px;padding:8px 12px;font-size:13px;max-width:300px}
#objective b{color:var(--gold)}

/* gear */
#gearBtn{position:fixed;right:14px;bottom:14px;z-index:13;font-size:24px;cursor:pointer;
  background:rgba(0,0,0,.4);border:1px solid var(--line);border-radius:10px;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center}
#gearBtn:hover{filter:brightness(1.3)}

/* emote bar */
#emotebar{position:fixed;bottom:86px;left:50%;transform:translateX(-50%);display:flex;gap:6px;z-index:16;
  background:rgba(0,0,0,.5);padding:8px;border-radius:14px;border:1px solid var(--line)}
#emotebar .em{font-size:26px;cursor:pointer;padding:4px 8px;border-radius:8px}
#emotebar .em:hover{background:rgba(255,255,255,.12)}

/* underwater tint */
#underwater{position:fixed;inset:0;pointer-events:none;z-index:9;opacity:0;transition:opacity .4s;
  background:radial-gradient(ellipse at center, rgba(10,80,120,.25) 0%, rgba(2,30,60,.7) 100%)}
#underwater.show{opacity:1}

/* settings */
#settingsBody .set{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 4px;font-size:14px;border-bottom:1px solid rgba(123,230,255,.1)}
#settingsBody input[type=range]{width:160px}
#settingsBody .val{width:46px;text-align:right;color:var(--gold);font-variant-numeric:tabular-nums}
#fps{position:fixed;left:18px;bottom:120px;z-index:12;font-size:12px;color:#9fc4dd;background:rgba(0,0,0,.35);padding:2px 8px;border-radius:6px}