/* Arcade de Física · Puerto Newton — autor: Petrovishk */
:root{
  --bg:#070d22; --bg2:#101a43; --panel:rgba(20,31,66,.88); --solid:#16224a; --ink:#eef3ff; --muted:#b0bee0; --line:#33498a;
  --sea:#4cb2f5; --sun:#ffc93c; --ok:#4fe3a8; --bad:#ff6f61; --focus:#9ad2ff; --lit:#5b4d00; --soft:#1b2c5e; --shadow:0 8px 28px rgba(0,0,0,.35);
  --c1:#9a86ff; --c2:#35b6ff; --c3:#ff8a4f; --c4:#ff6aa5; --c5:#ffb02e; --c6:#5ee07a; --c7:#36d7e8; --c8:#ff7b7b; --c9:#d36bff;
  --acc:var(--sea); --accInk:#08102a;
  --body:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --display:"Trebuchet MS","Segoe UI","Arial Rounded MT Bold",system-ui,sans-serif;
  --headbg:linear-gradient(90deg,#0c1740,#18306f); --gradtxt:linear-gradient(90deg,#ffffff,var(--acc));
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#e6efff; --bg2:#f7f2ff; --panel:rgba(255,255,255,.92); --solid:#ffffff; --ink:#14213d; --muted:#47567a; --line:#b9c8e6;
  --sea:#1a6fb5; --sun:#ffb703; --ok:#13795b; --bad:#c0392b; --focus:#1a6fb5; --lit:#fff2a8; --soft:#e8f0fd; --shadow:0 6px 22px rgba(20,33,61,.14);
  --c1:#6d4aff; --c2:#0b84d8; --c3:#d9480f; --c4:#c2255c; --c5:#e08a00; --c6:#2f9e44; --c7:#0c8599; --c8:#e03131; --c9:#9c36b5;
  --accInk:#ffffff; --headbg:linear-gradient(90deg,#ffffff,#eaf1ff); --gradtxt:linear-gradient(90deg,var(--ink),var(--acc));
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.5;min-height:100vh;
  background:radial-gradient(1100px 560px at 85% -8%,rgba(124,92,255,.38),transparent 62%),radial-gradient(900px 520px at -8% 18%,rgba(24,168,255,.28),transparent 60%),linear-gradient(180deg,var(--bg),var(--bg2));background-attachment:fixed}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.6;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='320' height='320'><g fill='white'><circle cx='12' cy='40' r='1.2'/><circle cx='88' cy='12' r='.9'/><circle cx='140' cy='90' r='1.4'/><circle cx='220' cy='30' r='1'/><circle cx='290' cy='70' r='1.3'/><circle cx='40' cy='150' r='.9'/><circle cx='110' cy='210' r='1.2'/><circle cx='190' cy='160' r='.8'/><circle cx='260' cy='230' r='1.5'/><circle cx='300' cy='140' r='.9'/><circle cx='60' cy='280' r='1.1'/><circle cx='170' cy='290' r='.9'/><circle cx='235' cy='110' r='.7'/></g></svg>");
  animation:drift 160s linear infinite}
:root[data-theme="light"] body::before{opacity:0}
@keyframes drift{to{background-position:320px 640px}}
a{color:var(--sea)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-999px;top:0;background:var(--solid);color:var(--ink);padding:8px 12px;z-index:100}
.skip:focus{left:8px;top:8px}
header.top,main,footer.bot{position:relative;z-index:1}
header.top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:8px 16px;background:var(--headbg);border-bottom:3px solid var(--acc);box-shadow:0 4px 22px rgba(0,0,0,.35),0 2px 18px color-mix(in srgb,var(--acc) 45%,transparent);position:sticky;top:0;z-index:20}
header.top .brand{font-family:var(--display);font-weight:900;font-size:1.1rem;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:8px;letter-spacing:.3px}
header.top .brand::before{content:"⚛";display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--acc);color:var(--accInk);font-size:1.1rem;animation:spin 9s linear infinite}
header.top .lvl{background:var(--acc);color:var(--accInk);border-radius:999px;padding:2px 12px;font-weight:800;font-size:.9rem;box-shadow:0 0 14px color-mix(in srgb,var(--acc) 60%,transparent)}
header.top .sp{flex:1}
.tbtn{border:1px solid var(--line);background:var(--soft);color:var(--ink);border-radius:10px;padding:6px 12px;font:inherit;font-size:.9rem;cursor:pointer;text-decoration:none;transition:transform .1s,border-color .15s}
.tbtn:hover{border-color:var(--acc);transform:translateY(-1px)}
main{max-width:1080px;margin:0 auto;padding:16px}
h1{font-family:var(--display);font-size:1.9rem;line-height:1.15;margin:6px 0 6px;font-weight:900;letter-spacing:.2px;background:var(--gradtxt);-webkit-background-clip:text;background-clip:text;color:transparent}
h2{font-family:var(--display);font-size:1.3rem;margin:18px 0 8px;font-weight:800}
h3{font-size:1.05rem;margin:14px 0 6px}
.lead{color:var(--muted);margin:0 0 12px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.07);margin:14px 0;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:rise .35s ease both}
.card.acc{border-color:var(--acc);box-shadow:var(--shadow),0 0 0 1px color-mix(in srgb,var(--acc) 45%,transparent) inset,0 0 22px color-mix(in srgb,var(--acc) 22%,transparent)}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:760px){.grid2,.grid3{grid-template-columns:1fr}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;background:linear-gradient(180deg,color-mix(in srgb,var(--acc) 78%,#fff),var(--acc));color:var(--accInk);border-radius:14px;padding:11px 20px;font:inherit;font-weight:800;letter-spacing:.2px;cursor:pointer;text-decoration:none;
  box-shadow:0 5px 0 color-mix(in srgb,var(--acc) 52%,#000),0 12px 20px rgba(0,0,0,.28);transition:transform .08s,box-shadow .08s,filter .15s;position:relative;top:0}
.btn:hover{filter:brightness(1.1);transform:translateY(-2px)}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 color-mix(in srgb,var(--acc) 52%,#000),0 4px 8px rgba(0,0,0,.25)}
.btn:disabled{opacity:.45;cursor:not-allowed;filter:grayscale(.6);transform:none}
.btn.ghost{background:transparent;color:var(--ink);border:2px solid var(--acc);box-shadow:none}
.btn.ghost:hover{background:color-mix(in srgb,var(--acc) 18%,transparent)}
.btn.warn{background:linear-gradient(180deg,#ff8c80,var(--bad));color:#fff;box-shadow:0 5px 0 #8f2418,0 12px 20px rgba(0,0,0,.28)}
.btn.small{padding:6px 12px;font-size:.9rem;border-radius:11px;box-shadow:0 3px 0 color-mix(in srgb,var(--acc) 52%,#000)}
.btn.ghost.small{box-shadow:none}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
label{font-weight:600}
input[type=number],input[type=text],input[type=password],select{font:inherit;border:2px solid var(--line);background:var(--solid);color:var(--ink);border-radius:10px;padding:7px 10px;max-width:100%}
input:focus,select:focus{border-color:var(--acc)}
input[type=range]{width:100%;accent-color:var(--acc)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:2px 12px;font-variant-numeric:tabular-nums}
.kv b{color:var(--muted);font-weight:600}
.ok{color:var(--ok);font-weight:800}.bad{color:var(--bad);font-weight:800}
.pill{display:inline-block;border-radius:999px;padding:2px 11px;font-size:.85rem;font-weight:800;background:var(--soft);color:var(--ink);border:1px solid var(--line)}
.formula{font-family:Cambria,"Cambria Math","Times New Roman",serif;font-size:1.08rem;background:var(--soft);border:1px solid var(--line);border-radius:9px;padding:3px 10px;display:inline-block}
.hint{font-size:.92rem;color:var(--muted)}
canvas{max-width:100%;height:auto;border-radius:14px;border:2px solid var(--line);background:#fff;touch-action:none;box-shadow:0 0 22px color-mix(in srgb,var(--acc) 18%,transparent)}
.bar{height:12px;border-radius:999px;background:var(--soft);overflow:hidden;border:1px solid var(--line)}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),color-mix(in srgb,var(--acc) 60%,#fff));width:0;transition:width .35s}
table.t{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
table.t th,table.t td{border-bottom:1px solid var(--line);padding:5px 8px;text-align:left}
table.t th{color:var(--muted);font-size:.88rem}
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:var(--solid);color:var(--ink);border:2px solid var(--acc);padding:10px 18px;border-radius:14px;font-weight:700;z-index:80;max-width:90vw;box-shadow:var(--shadow),0 0 20px color-mix(in srgb,var(--acc) 40%,transparent);animation:pop .3s ease both}
.overlay{position:fixed;inset:0;background:rgba(4,8,22,.72);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;z-index:70;padding:16px;animation:fade .2s ease both}
.overlay .box{background:var(--solid);color:var(--ink);border-radius:20px;max-width:620px;width:100%;padding:20px 22px;border:2px solid var(--acc);box-shadow:0 20px 60px rgba(0,0,0,.55),0 0 36px color-mix(in srgb,var(--acc) 30%,transparent);max-height:92vh;overflow:auto;animation:pop .35s ease both}
.overlay .box.wide{max-width:780px}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{0%{opacity:0;transform:translateX(-50%) scale(.7)}70%{transform:translateX(-50%) scale(1.06)}100%{opacity:1;transform:translateX(-50%) scale(1)}}
.overlay .box{animation-name:popbox}
@keyframes popbox{0%{opacity:0;transform:scale(.8)}70%{transform:scale(1.03)}100%{opacity:1;transform:none}}
.stars{font-size:1.5rem;letter-spacing:2px;color:var(--sun);text-shadow:0 0 12px rgba(255,201,60,.6)}
.lock{display:flex;gap:10px;align-items:flex-start}
/* hacks: señal de peligro */
.hack{border:2px dashed var(--bad);border-radius:14px;padding:18px 14px 10px;margin:16px 0 12px;background:repeating-linear-gradient(135deg,color-mix(in srgb,var(--bad) 10%,var(--solid)) 0 14px,color-mix(in srgb,var(--bad) 4%,var(--solid)) 14px 28px);position:relative}
.hack::before{content:"⚠ HACK · TRAMPA TENTADORA";position:absolute;top:-12px;left:14px;background:var(--bad);color:#fff;font-size:.72rem;font-weight:900;letter-spacing:.8px;padding:2px 10px;border-radius:999px;box-shadow:0 0 14px rgba(255,111,97,.6)}
.hack h3{margin-top:0;color:var(--bad)}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
footer.bot{max-width:1080px;margin:24px auto 30px;padding:0 16px;color:var(--muted);font-size:.88rem}
/* HUD */
.phud{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.av{--frame:linear-gradient(135deg,#cd7f32,#f5c28b);width:44px;height:44px;border-radius:50%;padding:3px;background:var(--frame);display:inline-grid;flex:none;cursor:pointer;border:0;box-shadow:0 0 12px rgba(0,0,0,.35)}
.av>i{background:var(--soft);border-radius:50%;width:100%;height:100%;display:grid;place-items:center;font-style:normal;font-size:1.45rem;line-height:1}
.av.big{width:84px;height:84px}.av.big>i{font-size:2.8rem}
.av.mid{width:62px;height:62px;cursor:default}.av.mid>i{font-size:2rem}
.av.fr-neon{background:conic-gradient(from 0deg,#00f5ff,#7c3aed,#ff2e93,#00f5ff);animation:spin 4s linear infinite}
.av.fr-neon>i{animation:spin 4s linear infinite reverse}
.av.fr-rainbow{background:conic-gradient(#ff3b3b,#ffb02e,#ffe74c,#4fe38a,#35b6ff,#9a86ff,#ff3b3b);animation:spin 6s linear infinite}
.av.fr-rainbow>i{animation:spin 6s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.phudinfo{display:flex;flex-direction:column;gap:2px;min-width:120px}
.phudinfo b{font-size:.92rem;line-height:1.1}
.xp{height:9px;width:130px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden;border:1px solid var(--line)}
.xp>i{display:block;height:100%;background:linear-gradient(90deg,#ffd35c,#ff8a4f);transition:width .6s}
.coins{display:inline-flex;align-items:center;gap:4px;font-weight:800;background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:3px 12px;color:var(--sun)}
.coin{display:inline-block;width:1.1em;height:1.1em;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff7c2,#ffc93c 55%,#c98a00);box-shadow:0 0 0 1px #8a5c00 inset;vertical-align:-.15em;margin-right:2px}
/* medallas */
.medals{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
.mdl{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;font-size:.82rem;padding:8px 4px;border-radius:14px;background:var(--soft);border:1px solid var(--line)}
.medal{--tier:linear-gradient(135deg,#e8a56a,#9a5a22);width:62px;height:62px;border-radius:50%;display:grid;place-items:center;font-size:1.9rem;background:radial-gradient(circle at 30% 22%,rgba(255,255,255,.65),transparent 38%),var(--tier);box-shadow:0 0 0 4px rgba(255,255,255,.14) inset,0 6px 14px rgba(0,0,0,.45);position:relative;overflow:hidden}
.medal::after{content:"";position:absolute;inset:-40%;background:linear-gradient(115deg,transparent 42%,rgba(255,255,255,.55) 50%,transparent 58%);transform:translateX(-120%);animation:shine 3.8s ease-in-out infinite}
@keyframes shine{0%,60%{transform:translateX(-120%)}100%{transform:translateX(120%)}}
.medal.silver{--tier:linear-gradient(135deg,#f1f5fb,#8a97ab)}
.medal.gold{--tier:linear-gradient(135deg,#ffe27a,#d79a00)}
.medal.neon{--tier:linear-gradient(135deg,#5ef3ff,#a855f7)}
.mdl.off{opacity:.55}.mdl.off .medal{filter:grayscale(1) brightness(.55)}.mdl.off .medal::after{display:none}
.mdl.fresh .medal{animation:pop2 .8s ease both}
@keyframes pop2{0%{transform:scale(.2) rotate(-40deg)}60%{transform:scale(1.25) rotate(8deg)}100%{transform:none}}
/* recompensa */
.reward{text-align:center}
.reward h2{font-size:1.9rem;margin:0 0 4px;animation:pop2 .7s ease both}
.reward .stars-big{font-size:3rem;letter-spacing:6px;color:#5a6a99}
.reward .stars-big span{display:inline-block;transition:color .2s}
.reward .stars-big span.on{color:var(--sun);text-shadow:0 0 18px rgba(255,201,60,.9);animation:pop2 .6s ease both}
.reward .gain{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:10px 0}
.reward .gain div{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:8px 16px;font-weight:900;font-size:1.2rem}
.reward .gain small{display:block;font-size:.72rem;color:var(--muted);font-weight:600}
.reward .lvlup{background:linear-gradient(90deg,#ffd35c,#ff8a4f);color:#2a1500;border-radius:14px;padding:8px 14px;font-weight:900;margin:8px 0;animation:glowy 1.2s ease-in-out infinite alternate}
@keyframes glowy{from{box-shadow:0 0 6px #ffd35c}to{box-shadow:0 0 26px #ff8a4f}}
.fx{position:fixed;inset:0;pointer-events:none;z-index:90}
.badgetoast{position:fixed;right:16px;top:74px;z-index:85;display:flex;gap:10px;align-items:center;background:var(--solid);border:2px solid var(--sun);border-radius:16px;padding:8px 14px 8px 8px;box-shadow:0 10px 30px rgba(0,0,0,.5),0 0 24px rgba(255,201,60,.4);animation:slidein .5s ease both;max-width:min(92vw,340px)}
.badgetoast .medal{width:48px;height:48px;font-size:1.4rem;flex:none}
@keyframes slidein{from{transform:translateX(120%);opacity:0}to{transform:none;opacity:1}}
/* banner de misión */
.mission{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:14px 16px;border-radius:20px;border:2px solid var(--acc);background:linear-gradient(120deg,color-mix(in srgb,var(--acc) 30%,var(--solid)),var(--solid));box-shadow:var(--shadow),0 0 28px color-mix(in srgb,var(--acc) 28%,transparent);margin:6px 0 4px;animation:rise .4s ease both}
.mission .mic{width:64px;height:64px;border-radius:18px;background:var(--acc);color:var(--accInk);display:grid;place-items:center;font-size:2.2rem;flex:none;box-shadow:0 5px 0 color-mix(in srgb,var(--acc) 50%,#000);animation:bob 3s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-5px)}}
.mission h2{margin:0;font-size:1.05rem;color:var(--muted);font-weight:700}
.mission .mt{font-family:var(--display);font-weight:900;font-size:1.35rem;line-height:1.15}
.mission .anch{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.chip{display:inline-flex;align-items:center;gap:5px;font-size:.8rem;font-weight:700;border-radius:999px;padding:3px 10px;background:var(--soft);border:1px solid var(--line);color:var(--ink)}
.chip.book{border-color:var(--sun)}
.bookcard{border-left:6px solid var(--sun)}
.bookcard ul{margin:6px 0 0;padding-left:20px}
/* perfil y pestañas */
.tabs2{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 12px}
.tabs2 button{border:1px solid var(--line);background:var(--soft);color:var(--ink);padding:6px 14px;border-radius:999px;font:inherit;font-weight:700;cursor:pointer}
.tabs2 button[aria-selected=true]{background:var(--acc);color:var(--accInk);border-color:var(--acc)}
.shop{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:10px}
.shop button{display:flex;flex-direction:column;align-items:center;gap:4px;border:2px solid var(--line);background:var(--soft);color:var(--ink);border-radius:14px;padding:8px 4px;cursor:pointer;font:inherit;font-size:.82rem;font-weight:700}
.shop button.sel{border-color:var(--acc);box-shadow:0 0 14px color-mix(in srgb,var(--acc) 50%,transparent)}
.shop button:disabled{opacity:.5;cursor:not-allowed}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}