:root{
  --bg:#0b0d13; --panel:#12151f; --panel2:#171b27; --line:#222838;
  --txt:#e7e9f0; --muted:#8b91a6; --accent:#ff5c38; --accent2:#36d399; --locked:#3a4154;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--txt);font-family:'Inter',system-ui,sans-serif;height:100vh;overflow:hidden}
code{background:#0a0c12;border:1px solid var(--line);border-radius:5px;padding:1px 6px;font-size:.88em;color:#d6e3ff}
.hl{color:#fff;font-weight:600}
.app{display:grid;grid-template-columns:240px 1fr 330px;height:100vh}

/* ---------- SIDEBAR ---------- */
.sidebar{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden}
.brand{padding:18px 18px 14px;border-bottom:1px solid var(--line)}
.brand .logo{font-family:'Space Grotesk';font-weight:700;font-size:22px;letter-spacing:2px}
.brand .logo b{color:var(--accent)}
.brand .sub{font-size:11px;color:var(--muted);margin-top:2px}
.xp{padding:12px 18px;border-bottom:1px solid var(--line)}
.xp .row{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-bottom:6px}
.bar{height:7px;background:#0a0c12;border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),#ff8a5c);border-radius:99px;transition:width .5s}
.xprow{display:flex;justify-content:space-between;align-items:center;margin-top:9px;font-size:12px;color:var(--muted)}
.link{background:none;border:0;color:var(--muted);cursor:pointer;font-size:12px}
.link:hover{color:var(--accent)}
.side-foot{border-top:1px solid var(--line);padding:8px 12px}
.link.danger{color:var(--muted);opacity:.65}
.link.danger:hover{color:#ff6b6b;opacity:1}
.levels{flex:1;overflow:auto;padding:10px 10px 30px}
.levels .lbl{font-size:10px;letter-spacing:1.5px;color:var(--muted);text-transform:uppercase;padding:12px 8px 6px}
.lvl{display:flex;gap:10px;align-items:center;padding:9px 10px;border-radius:9px;font-size:13px;cursor:pointer;color:#c3c7d4;margin-bottom:2px}
.lvl .n{width:22px;height:22px;border-radius:6px;background:var(--panel2);display:grid;place-items:center;font-size:11px;font-weight:600;flex:none;border:1px solid var(--line)}
.lvl:hover:not(.locked){background:var(--panel2)}
.lvl.done{color:var(--muted)}
.lvl.done .n{background:rgba(54,211,153,.12);border-color:rgba(54,211,153,.3);color:var(--accent2)}
.lvl.active{background:var(--panel2);color:#fff}
.lvl.active .n{background:var(--accent);border-color:var(--accent);color:#0b0d13}
.lvl.locked{color:var(--locked);cursor:not-allowed}
.lvl.locked .n{color:var(--locked)}
.lvl.skipped{color:#c9b079}
.lvl.skipped .n{background:rgba(255,189,46,.14);border-color:rgba(255,189,46,.4);color:#ffce5c}

/* ---------- MAIN ---------- */
.main{overflow:auto;padding:30px 40px 70px}
.crumb{font-size:11px;color:var(--muted);letter-spacing:1px;text-transform:uppercase}
.main h1{font-family:'Space Grotesk';font-size:30px;margin:6px 0 4px;letter-spacing:-.5px}
.tag{display:inline-block;font-size:11px;color:var(--accent);background:rgba(255,92,56,.1);border:1px solid rgba(255,92,56,.25);padding:3px 9px;border-radius:99px;margin-bottom:18px}
.main p{color:#c9cdda;line-height:1.7;margin:0 0 14px;max-width:640px}
.box{border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:8px 0 22px;max-width:640px}
.box.analogy{background:linear-gradient(180deg,var(--panel),var(--panel2));border-left:3px solid var(--accent)}
.box.callout{background:rgba(54,211,153,.06);border-color:rgba(54,211,153,.22)}
.box .h{display:flex;align-items:center;gap:8px;font-family:'Space Grotesk';font-weight:600;margin-bottom:8px}
.box p{margin:0;font-size:14px;max-width:none}
h2.sec{font-family:'Space Grotesk';font-size:17px;margin:30px 0 10px;display:flex;align-items:center;gap:9px}

/* ---------- PLAYGROUND ---------- */
.play{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#0a0c12;max-width:860px}
.play .head{display:flex;align-items:center;justify-content:space-between;padding:9px 14px;background:var(--panel);border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.play .head .dots{display:flex;gap:6px}
.play .head .dots i{width:11px;height:11px;border-radius:50%;display:block}
.d1{background:#ff5f56}.d2{background:#ffbd2e}.d3{background:#27c93f}
.play .grid{display:grid;grid-template-columns:1fr 1fr;min-height:300px}
.play .code .t{font-size:10px;letter-spacing:1px;color:var(--muted);padding:7px 12px;background:#0c0f17;text-transform:uppercase;border-right:1px solid var(--line)}
.play textarea{width:100%;height:262px;background:#0a0c12;color:#d6e3ff;border:0;border-right:1px solid var(--line);resize:none;padding:12px 14px;font-family:'SFMono-Regular',Consolas,monospace;font-size:13px;line-height:1.6;outline:none;tab-size:2}
.play iframe{width:100%;height:100%;border:0;background:#fff;min-height:289px}
.play.demo iframe{display:block;width:100%;height:380px;min-height:380px;background:#0b0d13}
.hint{display:flex;gap:10px;align-items:flex-start;background:rgba(255,92,56,.06);border:1px solid rgba(255,92,56,.22);border-radius:10px;padding:12px 14px;margin:14px 0 0;max-width:860px;font-size:13px;color:#f3c9bd}
.hint b{color:var(--accent)}

/* ---------- CHECKPOINT ---------- */
.checkpoint{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:26px 0 0;max-width:640px}
.cp-q{font-family:'Space Grotesk';font-weight:600;font-size:15px;margin-bottom:14px;display:flex;gap:9px}
.cp-opts{display:flex;flex-direction:column;gap:8px}
.cp-opts button{text-align:left;background:var(--panel2);border:1px solid var(--line);color:#d4d8e3;padding:12px 14px;border-radius:10px;cursor:pointer;font-size:14px;font-family:inherit}
.cp-opts button:hover{border-color:var(--muted)}
.cp-opts button.ok{border-color:var(--accent2);background:rgba(54,211,153,.12);color:#bfe9d6}
.cp-opts button.no{border-color:#ff5f56;background:rgba(255,95,86,.1);color:#ffc4c0}
.cp-opts button.dim{opacity:.4}
.cp-opts button.ok::after{content:'✓';float:right;font-weight:700;color:var(--accent2)}
.cp-opts button.no::after{content:'✗';float:right;font-weight:700;color:#ff5f56}
.checkpoint.answered .cp-opts{pointer-events:none}
.checkpoint.answered .cp-opts button{cursor:default}
.cp-explain{margin-top:14px;font-size:13px;color:#bfe9d6;background:rgba(54,211,153,.07);border:1px solid rgba(54,211,153,.22);border-radius:10px;padding:12px 14px;line-height:1.6}
.cp-msg{margin-top:12px;font-size:13px;font-weight:600;color:#ffd58a;background:rgba(255,184,77,.08);border:1px solid rgba(255,184,77,.28);border-radius:10px;padding:10px 14px;line-height:1.5}
.cp-actions{margin-top:13px}
.cp-ask{background:none;border:0;color:var(--muted);cursor:pointer;font-size:13px;padding:0;font-family:inherit}
.cp-ask:hover{color:var(--accent)}

.nav{display:flex;gap:12px;margin-top:34px;max-width:860px}
.btn{font-family:'Space Grotesk';font-weight:600;border:0;border-radius:10px;padding:12px 20px;cursor:pointer;font-size:14px}
.btn.primary{background:var(--accent);color:#0b0d13}
.btn.ghost{background:var(--panel2);color:#c3c7d4;border:1px solid var(--line)}
.btn.disabled,.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.locked,.btn.locked:disabled{opacity:1;background:var(--panel2);color:#c3c7d4;border:1px solid var(--line);cursor:wait}

/* ---------- TUTOR ---------- */
.tutor{background:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column;overflow:hidden}
.tutor .top{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.tutor .av{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#ff8a5c);display:grid;place-items:center;font-size:18px}
.tutor .top .nm{font-family:'Space Grotesk';font-weight:600;font-size:14px}
.tutor .top .st{font-size:11px;color:var(--accent2);display:flex;align-items:center;gap:5px}
.tutor .top .st::before{content:'';width:7px;height:7px;background:var(--accent2);border-radius:50%;display:block}
.chat{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:88%;padding:10px 13px;border-radius:13px;font-size:13px;line-height:1.55;white-space:pre-wrap;word-wrap:break-word}
.msg.bot{background:var(--panel2);border:1px solid var(--line);border-bottom-left-radius:4px;align-self:flex-start}
.msg.me{background:var(--accent);color:#0b0d13;border-bottom-right-radius:4px;align-self:flex-end;font-weight:500}
.msg.bot b{color:#fff}
.msg.typing{color:var(--muted);font-style:italic}
.sugg{display:flex;flex-wrap:wrap;gap:7px;padding:0 16px 10px}
.sugg button{background:transparent;border:1px solid var(--line);color:var(--muted);font-size:12px;padding:6px 11px;border-radius:99px;cursor:pointer}
.sugg button:hover{border-color:var(--accent);color:var(--accent)}
.compose{padding:12px 14px;border-top:1px solid var(--line);display:flex;gap:8px}
.compose input{flex:1;background:#0a0c12;border:1px solid var(--line);border-radius:10px;padding:11px 13px;color:var(--txt);font-size:13px;outline:none}
.compose input:focus{border-color:var(--accent)}
.compose button{background:var(--accent);border:0;border-radius:10px;width:42px;color:#0b0d13;font-size:18px;cursor:pointer}
.note{font-size:10px;color:var(--muted);text-align:center;padding:0 14px 10px}

/* ---------- GLOSSÁRIO ---------- */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;z-index:50}
.overlay[hidden]{display:none}
.modal{background:var(--panel);border:1px solid var(--line);border-radius:16px;width:min(480px,90vw);max-height:80vh;display:flex;flex-direction:column}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line);font-family:'Space Grotesk';font-weight:600}
.modal-head button{background:none;border:0;color:var(--muted);font-size:24px;cursor:pointer;line-height:1}
.modal-body{overflow:auto;padding:8px 20px 20px}
.gterm{padding:14px 0;border-bottom:1px solid var(--line)}
.gterm:last-child{border:0}
.gterm b{font-family:'Space Grotesk';color:var(--accent)}
.gterm p{font-size:13px;color:#c3c7d4;margin-top:4px;line-height:1.5}
.gempty{color:var(--muted);font-size:14px;text-align:center;padding:30px 0}

/* ---------- A TORRE ---------- */
.tower-entry{background:linear-gradient(180deg,rgba(255,92,56,.12),rgba(255,92,56,.04));border:1px solid rgba(255,92,56,.25)}
.tower-entry .n{background:rgba(255,92,56,.18);border-color:rgba(255,92,56,.4)}
.tower-entry.active{background:rgba(255,92,56,.22);color:#fff}
.tower-entry.soft{opacity:.85}
.tower-entry .hintlock{font-style:normal;font-size:10px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:1px 5px;margin-left:4px}
.boss-row{background:linear-gradient(180deg,rgba(255,189,46,.12),rgba(255,189,46,.03));border:1px solid rgba(255,189,46,.28);margin-top:4px}
.boss-row .n{background:rgba(255,189,46,.16);border-color:rgba(255,189,46,.4)}
.boss-row.active{background:rgba(255,189,46,.24);color:#fff}
.boss-row.done{color:#d8c48a}
.boss-row.done .n{background:rgba(255,189,46,.22);border-color:rgba(255,189,46,.5);color:#ffce5c}
.review-row{background:linear-gradient(180deg,rgba(54,211,153,.12),rgba(54,211,153,.03));border:1px solid rgba(54,211,153,.28);margin-bottom:6px}
.review-row .n{background:rgba(54,211,153,.16);border-color:rgba(54,211,153,.4)}
.review-row.active{background:rgba(54,211,153,.22);color:#fff}
.contratavel{max-width:640px;margin:18px 0 8px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.contratavel .crow{display:flex;justify-content:space-between;font-size:13px;margin-bottom:8px}
.contratavel .crow b{color:var(--accent2)}
.cbar{height:10px;background:#0a0c12;border-radius:99px;overflow:hidden}
.cbar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent2),#7be3b6);border-radius:99px;transition:width .6s}
.towerstats{font-size:13px;color:var(--muted);margin:6px 0 4px;max-width:640px}
.towerbar{display:flex;align-items:center;justify-content:space-between;max-width:640px;margin:2px 0 2px}
.hearts{font-size:18px;letter-spacing:2px}
.btn.sm{padding:6px 12px;font-size:12px}
.cp-opts.arena{max-width:640px}
.arena-explain{margin-top:16px;font-size:13px;color:#bfe9d6;background:rgba(54,211,153,.07);border:1px solid rgba(54,211,153,.22);border-radius:10px;padding:12px 14px;line-height:1.6;max-width:640px}
.arena-explain.bad{color:#ffd0cb;background:rgba(255,95,86,.08);border-color:rgba(255,95,86,.28)}
.arena-next{margin-top:18px}
.arena-actions{display:flex;gap:10px;margin-top:14px;max-width:640px}
.ligar{max-width:640px;margin-top:8px}
.ligar .t{font-size:12px;color:var(--muted);margin:6px 0 10px}
.ligar .pool{display:flex;flex-direction:column;gap:8px}
.ligar .pool button{text-align:left;background:var(--panel2);border:1px solid var(--line);color:#d4d8e3;padding:11px 14px;border-radius:10px;cursor:pointer;font-size:14px;font-family:inherit}
.ligar .pool button:hover{border-color:var(--accent)}
.ligar .picked{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.ligar .picked .step{display:flex;align-items:center;gap:10px;background:rgba(255,92,56,.07);border:1px solid rgba(255,92,56,.22);border-radius:10px;padding:10px 13px;font-size:14px}
.ligar .picked .step .k{width:22px;height:22px;flex:none;border-radius:6px;background:var(--accent);color:#0b0d13;display:grid;place-items:center;font-weight:700;font-size:12px}
.ligar .picked.good .step{background:rgba(54,211,153,.1);border-color:rgba(54,211,153,.3)}
.ligar .picked.good .step .k{background:var(--accent2)}
.ligar .picked.bad .step{background:rgba(255,95,86,.08);border-color:rgba(255,95,86,.28)}
.ligar .picked.bad .step .k{background:#ff5f56}
.arena-text{width:100%;max-width:640px;min-height:120px;background:#0a0c12;color:#d6e3ff;border:1px solid var(--line);border-radius:10px;resize:vertical;padding:12px 14px;font-family:inherit;font-size:14px;line-height:1.6;outline:none}
.arena-text:focus{border-color:var(--accent)}
.task{max-width:640px}
.task .from{font-size:12px;color:var(--accent);font-weight:600;margin-bottom:6px}
.learn-row{margin-top:16px;max-width:640px}
.learn-link{background:none;border:1px dashed var(--line);color:var(--muted);cursor:pointer;font-size:12px;padding:8px 13px;border-radius:8px;font-family:inherit}
.learn-link:hover{border-color:var(--accent);color:var(--accent)}
.climb-banner{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:rgba(255,92,56,.1);border:1px solid rgba(255,92,56,.3);border-radius:10px;padding:11px 14px;margin-bottom:18px;font-size:13px;color:#f3c9bd;max-width:860px}
.climb-banner .btn{margin-left:auto}
.fail-list{max-width:640px;margin:6px 0 4px;padding-left:22px;color:#f3c9bd;font-size:14px;line-height:1.7}

/* ---------- JORNADA / SHELL ---------- */
.contrat-mini{margin-top:11px}
.contrat-mini .row{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-bottom:6px}
.bar i.green{background:linear-gradient(90deg,var(--accent2),#7be3b6)}
.onboard{max-width:560px;margin:6vh auto 0;text-align:center}
.onboard .ob-logo{font-family:'Space Grotesk';font-weight:700;font-size:24px;letter-spacing:2px;margin-bottom:24px}
.onboard .ob-logo b{color:var(--accent)}
.onboard h1{font-family:'Space Grotesk';font-size:30px;margin-bottom:14px}
.onboard p{color:#c9cdda;line-height:1.7;margin:0 auto 14px;max-width:470px}
.onboard .ob-q{color:#fff;font-weight:600;margin-top:24px}
.onboard .ob-form{display:flex;gap:10px;max-width:420px;margin:0 auto}
.onboard .ob-form input{flex:1;background:#0a0c12;border:1px solid var(--line);border-radius:10px;padding:12px 14px;color:var(--txt);font-size:15px;outline:none}
.onboard .ob-form input:focus{border-color:var(--accent)}
.onboard .ob-skip{margin-top:18px}
#toast{position:fixed;top:18px;left:50%;transform:translateX(-50%) translateY(-20px);background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:12px 18px;font-size:14px;color:var(--txt);opacity:0;pointer-events:none;transition:.4s;z-index:60;box-shadow:0 10px 30px rgba(0,0,0,.45)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#222838;border-radius:9px}