/* ============================================================
   DevTools Master — terminal-noir "living inside DevTools"
   ============================================================ */
:root{
  --bg:#0a0c10; --bg-2:#0d1016; --panel:#12161e; --elev:#171c26; --elev-2:#1d2430;
  --line:#232b39; --line-soft:#1a2029;
  --txt:#e7ebf2; --dim:#98a1b3; --faint:#5a6474;
  --accent:#34e3d4;         /* inspetor: ciano/teal */
  --accent-ink:#062b28;
  --accent-glow:rgba(52,227,212,.16);
  --xp:#a6f24d;             /* verde XP/sucesso */
  --warn:#ffb454;           /* desafio */
  --danger:#ff5d78;         /* zona de segurança */
  --danger-soft:rgba(255,93,120,.13);
  --blue:#5aa9ff;
  --radius:14px; --radius-sm:9px;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --display:"Martian Mono",var(--mono);
  --sans:"IBM Plex Sans",system-ui,sans-serif;
  --shadow:0 18px 50px -20px rgba(0,0,0,.75);
  --sb-w:300px; --tb-h:56px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--sans); color:var(--txt); background:var(--bg);
  min-height:100vh; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  background-image:
    radial-gradient(1100px 520px at 82% -8%, rgba(52,227,212,.10), transparent 60%),
    radial-gradient(760px 460px at 6% 108%, rgba(90,169,255,.07), transparent 62%),
    linear-gradient(transparent 0 31px, rgba(255,255,255,.014) 31px 32px),
    linear-gradient(90deg, transparent 0 31px, rgba(255,255,255,.014) 31px 32px);
  background-size:auto,auto,32px 32px,32px 32px;
}
::selection{background:var(--accent-glow); color:#eafffd}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
code,kbd,pre{font-family:var(--mono)}
.mono{font-family:var(--mono)}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px; border-radius:6px}

/* ---------- Topbar ---------- */
.topbar{
  position:sticky; top:0; z-index:60; height:var(--tb-h);
  display:flex; align-items:center; gap:14px; padding:0 16px;
  background:linear-gradient(180deg,#0e131b,#0b0e14);
  border-bottom:1px solid var(--line); backdrop-filter:blur(6px);
}
.tb-left,.tb-right{display:flex; align-items:center; gap:12px}
.tb-left{flex:0 0 auto}
.tb-right{flex:0 0 auto; margin-left:auto}
.tb-menu{display:none; background:transparent; border:1px solid var(--line); color:var(--txt);
  width:36px;height:36px;border-radius:9px;font-size:16px;cursor:pointer}
.brand{display:flex; align-items:center; gap:9px}
.brand-mark{
  font-family:var(--mono); font-weight:700; color:var(--accent);
  background:var(--accent-ink); border:1px solid rgba(52,227,212,.4);
  padding:4px 8px; border-radius:8px; font-size:15px; line-height:1;
  box-shadow:0 0 0 1px rgba(52,227,212,.08), 0 0 22px -6px var(--accent-glow);
  animation:blink 2.4s steps(1) infinite;
}
@keyframes blink{0%,92%{opacity:1}93%,97%{opacity:.35}98%,100%{opacity:1}}
.brand-txt{font-family:var(--display); font-weight:800; font-size:15px; letter-spacing:-.5px}
.brand-txt b{color:var(--accent); font-weight:800}
.tb-dots{display:flex; gap:6px; margin-left:4px}
.tb-dots i{width:9px;height:9px;border-radius:50%;background:#2a3341;display:block}
.tb-dots i:nth-child(1){background:#ff5f57}.tb-dots i:nth-child(2){background:#febc2e}.tb-dots i:nth-child(3){background:#28c840}
.tb-omni{
  flex:1 1 auto; max-width:520px; margin:0 auto;
  display:flex; align-items:center; gap:8px; height:34px; padding:0 12px;
  background:#0a0d13; border:1px solid var(--line); border-radius:999px;
  color:var(--dim); font-family:var(--mono); font-size:12.5px; overflow:hidden; white-space:nowrap;
}
.omni-ico{filter:grayscale(.2); font-size:11px}
.omni-url b{color:var(--accent)}
/* HUD */
.hud-streak{display:flex; align-items:center; gap:5px; padding:6px 10px; border:1px solid var(--line);
  border-radius:999px; background:#0c1017; font-family:var(--mono); font-weight:700; font-size:13px}
.hud-streak .flame{filter:saturate(1.3)}
.hud-streak.cold{opacity:.5}
.hud-level{display:flex; align-items:center; gap:10px}
.lvl-badge{position:relative; width:40px;height:40px;flex:0 0 auto; display:grid;place-items:center;
  font-family:var(--display); font-weight:800; font-size:15px; color:var(--accent-ink);
  background:radial-gradient(circle at 30% 25%, #7ffcf0, var(--accent)); border-radius:11px;
  box-shadow:0 0 24px -6px var(--accent-glow), inset 0 0 0 1px rgba(255,255,255,.25)}
.lvl-meta{min-width:150px}
.lvl-rank{font-family:var(--mono); font-size:11px; color:var(--dim); letter-spacing:.4px; text-transform:uppercase}
.xpbar{height:7px;border-radius:99px;background:#10151d;border:1px solid var(--line-soft); overflow:hidden; margin:3px 0}
.xpbar i{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--xp),#dfff59a); transition:width .8s cubic-bezier(.2,.8,.2,1);
  box-shadow:0 0 12px -2px rgba(166,242,77,.5)}
.xp-nums{font-family:var(--mono); font-size:10.5px; color:var(--faint)}

/* ---------- Shell / layout ---------- */
.shell{display:grid; grid-template-columns:var(--sb-w) 1fr; align-items:start;
  min-height:calc(100vh - var(--tb-h))}
.sidebar{
  position:sticky; top:var(--tb-h); align-self:start;
  height:calc(100vh - var(--tb-h)); display:flex; flex-direction:column;
  background:linear-gradient(180deg,#0c0f15,#0a0d12); border-right:1px solid var(--line);
}
.side-scroll{flex:1 1 auto; overflow-y:auto; padding:14px 12px 8px; scrollbar-width:thin; scrollbar-color:#2a3341 transparent}
.side-scroll::-webkit-scrollbar{width:8px}.side-scroll::-webkit-scrollbar-thumb{background:#222a37;border-radius:99px}

.side-sec{font-family:var(--mono); font-size:10.5px; letter-spacing:1.4px; text-transform:uppercase;
  color:var(--faint); margin:14px 8px 7px}
.mod{margin-bottom:3px}
.mod-head{display:flex; align-items:center; gap:10px; width:100%; text-align:left; cursor:pointer;
  background:transparent; border:1px solid transparent; color:var(--txt); padding:8px 9px; border-radius:10px}
.mod-head:hover{background:#111621; border-color:var(--line-soft)}
.mod-head.open{background:#0f1520}
.mod-ico{width:26px;height:26px;flex:0 0 auto; display:grid;place-items:center; border-radius:8px;
  font-size:14px; background:#141a24; border:1px solid var(--line); color:var(--accent)}
.mod.sec .mod-ico{color:var(--danger); border-color:rgba(255,93,120,.35); background:var(--danger-soft)}
.mod-name{flex:1 1 auto; font-size:13.5px; font-weight:600; line-height:1.15}
.mod-name small{display:block; font-family:var(--mono); font-weight:400; font-size:10px; color:var(--faint)}
.mod-chev{color:var(--faint); font-size:11px; transition:transform .2s}
.mod-head.open .mod-chev{transform:rotate(90deg)}
.mini-ring{width:16px;height:16px;flex:0 0 auto}
.mini-ring circle{fill:none;stroke-width:3}
.mini-ring .b{stroke:#222a37}.mini-ring .f{stroke:var(--accent); stroke-linecap:round; transform:rotate(-90deg); transform-origin:center; transition:stroke-dashoffset .5s}

.lessons{overflow:hidden; max-height:0; transition:max-height .28s ease}
.mod.open .lessons{max-height:900px}
.lesson-link{display:flex; align-items:center; gap:9px; padding:6px 9px 6px 12px; margin:1px 0 1px 17px;
  border-left:1px solid var(--line); color:var(--dim); font-size:12.5px; cursor:pointer; border-radius:0 8px 8px 0}
.lesson-link:hover{color:var(--txt); background:#10151e}
.lesson-link.active{color:var(--accent); background:linear-gradient(90deg,rgba(52,227,212,.12),transparent); border-left-color:var(--accent)}
.lesson-link .tick{width:15px;height:15px;flex:0 0 auto; border-radius:50%; border:1.5px solid #2c3543; display:grid;place-items:center; font-size:9px}
.lesson-link.done .tick{background:var(--xp); border-color:var(--xp); color:#123; font-weight:800}
.lesson-link.active .tick{border-color:var(--accent)}
.lk-kind{margin-left:auto; font-family:var(--mono); font-size:9px; padding:1px 5px; border-radius:5px; color:var(--faint); border:1px solid var(--line)}
.lk-kind.lab{color:var(--warn); border-color:rgba(255,180,84,.4)}

.side-foot{flex:0 0 auto; display:flex; align-items:center; gap:12px; padding:12px 16px; border-top:1px solid var(--line); background:#0a0d12}
.prog-ring{position:relative; width:44px;height:44px}
.prog-ring svg{width:44px;height:44px; transform:rotate(-90deg)}
.prog-ring circle{fill:none; stroke-width:4}
.ring-bg{stroke:#1b2230}
.ring-fg{stroke:var(--xp); stroke-linecap:round; transition:stroke-dashoffset .7s cubic-bezier(.2,.8,.2,1)}
.prog-ring span{position:absolute; inset:0; display:grid; place-items:center; font-family:var(--mono); font-size:11px; font-weight:700; transform:none}
.prog-lbl{font-size:11.5px; color:var(--dim); line-height:1.35}
.prog-lbl b{color:var(--txt); font-family:var(--mono)}
.scrim{display:none}

/* ---------- Stage ---------- */
.stage{padding:30px clamp(18px,4vw,54px) 90px; max-width:1080px; margin:0 auto; width:100%; outline:none}
@media(min-width:1400px){.stage{margin:0 0 0 40px}}

.crumbs{display:flex; align-items:center; gap:8px; font-family:var(--mono); font-size:11.5px; color:var(--faint); margin-bottom:14px}
.crumbs b{color:var(--dim)} .crumbs .sep{opacity:.5}

/* Dashboard */
.hero{position:relative; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
  background:linear-gradient(135deg,#101722,#0b0f16); padding:34px 32px; margin-bottom:26px; box-shadow:var(--shadow)}
.hero::before{content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(600px 260px at 90% 0%, var(--accent-glow), transparent 60%)}
.hero::after{content:"</>"; position:absolute; right:22px; bottom:-24px; font-family:var(--display); font-weight:800;
  font-size:150px; color:rgba(255,255,255,.03); pointer-events:none}
.hero .eyebrow{font-family:var(--mono); font-size:11.5px; letter-spacing:2px; text-transform:uppercase; color:var(--accent)}
.hero h1{font-family:var(--display); font-weight:800; font-size:clamp(26px,4.4vw,44px); line-height:1.02; letter-spacing:-1.2px; margin:12px 0 10px}
.hero p{max-width:620px; color:var(--dim); font-size:15px; line-height:1.6; margin:0 0 20px}
.hero-cta{display:flex; gap:12px; flex-wrap:wrap}

.stat-row{display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-bottom:28px}
.stat{border:1px solid var(--line); border-radius:12px; background:var(--panel); padding:15px 16px}
.stat .n{font-family:var(--display); font-weight:800; font-size:24px; line-height:1}
.stat .l{font-family:var(--mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.6px; color:var(--faint); margin-top:6px}
.stat.a .n{color:var(--accent)} .stat.x .n{color:var(--xp)} .stat.w .n{color:var(--warn)} .stat.d .n{color:var(--danger)}

.sec-title{font-family:var(--display); font-weight:600; font-size:14px; letter-spacing:.3px; color:var(--dim);
  text-transform:uppercase; margin:8px 0 14px; display:flex; align-items:center; gap:10px}
.sec-title::after{content:""; flex:1; height:1px; background:var(--line)}

.grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(250px,1fr)); gap:14px}
.mcard{position:relative; border:1px solid var(--line); border-radius:12px; background:var(--panel);
  padding:18px; cursor:pointer; transition:transform .15s, border-color .15s, background .15s; overflow:hidden}
.mcard:hover{transform:translateY(-3px); border-color:var(--accent); background:var(--elev)}
.mcard:hover .inspect{opacity:1}
.inspect{position:absolute; inset:-1px; border:1px dashed var(--accent); border-radius:12px; opacity:0; transition:opacity .15s; pointer-events:none}
.inspect b{position:absolute; top:-9px; left:12px; background:var(--accent); color:var(--accent-ink); font-family:var(--mono);
  font-size:9px; padding:1px 6px; border-radius:4px; font-weight:700}
.mcard .top{display:flex; align-items:center; gap:11px; margin-bottom:12px}
.mcard .ico{width:38px;height:38px;flex:0 0 auto; display:grid;place-items:center; border-radius:10px; font-size:19px;
  background:#141b26; border:1px solid var(--line); color:var(--accent)}
.mcard.sec .ico{color:var(--danger); background:var(--danger-soft); border-color:rgba(255,93,120,.35)}
.mcard .num{font-family:var(--mono); font-size:11px; color:var(--faint)}
.mcard h3{margin:0; font-size:15px; font-weight:700; letter-spacing:-.2px}
.mcard p{margin:8px 0 14px; color:var(--dim); font-size:12.8px; line-height:1.5}
.mcard .foot{display:flex; align-items:center; justify-content:space-between; font-family:var(--mono); font-size:11px; color:var(--faint)}
.mcard .barmini{height:5px; border-radius:99px; background:#10151d; overflow:hidden; margin-top:4px}
.mcard .barmini i{display:block;height:100%; background:var(--xp); border-radius:99px}

/* Lesson view */
.lesson{max-width:820px}
.l-head{margin-bottom:22px}
.l-tags{display:flex; flex-wrap:wrap; gap:7px; margin-bottom:12px}
.tag{font-family:var(--mono); font-size:10.5px; padding:3px 9px; border-radius:99px; border:1px solid var(--line);
  color:var(--dim); background:#0e131b; letter-spacing:.4px}
.tag.lvl-iniciante{color:var(--xp); border-color:rgba(166,242,77,.35)}
.tag.lvl-intermediário{color:var(--warn); border-color:rgba(255,180,84,.35)}
.tag.lvl-avançado{color:var(--danger); border-color:rgba(255,93,120,.35)}
.tag.xp{color:var(--accent); border-color:rgba(52,227,212,.35)}
.l-head h1{font-family:var(--display); font-weight:800; font-size:clamp(23px,3.6vw,34px); line-height:1.06; letter-spacing:-.8px; margin:0}

.block{border:1px solid var(--line); border-radius:var(--radius); background:var(--panel); padding:22px 24px; margin:16px 0}
.block > h2{font-family:var(--mono); font-size:12px; letter-spacing:1.5px; text-transform:uppercase; margin:0 0 14px;
  display:flex; align-items:center; gap:9px; color:var(--dim)}
.block > h2 .b-ico{width:22px;height:22px; display:grid;place-items:center; border-radius:6px; font-size:12px; background:#141b26; border:1px solid var(--line)}
.block.theory{background:linear-gradient(180deg,#12161e,#0f131a)}
.prose p{margin:0 0 12px; line-height:1.68; color:#cfd6e2; font-size:14.5px}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--txt)}
.prose ul{margin:4px 0 12px; padding-left:20px} .prose li{margin:5px 0; line-height:1.6; color:#cfd6e2; font-size:14px}
.prose code{background:#0a0e14; border:1px solid var(--line); border-radius:5px; padding:1px 6px; font-size:12.5px; color:var(--accent)}
.prose .k{display:inline-flex; align-items:center; gap:2px}
kbd{background:linear-gradient(180deg,#1b222d,#131922); border:1px solid #2c3644; border-bottom-width:2px; border-radius:6px;
  padding:2px 7px; font-size:11.5px; color:#dbe2ee; box-shadow:0 1px 0 rgba(0,0,0,.4); white-space:nowrap}

/* code sample */
.code{position:relative; border:1px solid var(--line); border-radius:10px; background:#080b10; margin:12px 0; overflow:hidden}
.code .cbar{display:flex; align-items:center; gap:8px; padding:8px 12px; border-bottom:1px solid var(--line); background:#0b0f15}
.code .cbar .fn{font-family:var(--mono); font-size:11px; color:var(--faint); margin-right:auto}
.code .cbar .lang{font-family:var(--mono); font-size:10px; color:var(--accent); text-transform:uppercase; letter-spacing:.5px}
.code .copy{background:transparent; border:1px solid var(--line); color:var(--dim); border-radius:6px; font-size:10.5px;
  padding:3px 8px; cursor:pointer; font-family:var(--mono)}
.code .copy:hover{color:var(--accent); border-color:var(--accent)}
.code pre{margin:0; padding:14px 16px; overflow-x:auto; font-size:12.8px; line-height:1.65; color:#d6deeb}
.code pre::-webkit-scrollbar{height:8px}.code pre::-webkit-scrollbar-thumb{background:#222a37;border-radius:99px}
.tok-c{color:#5f6b7d; font-style:italic}   /* comentário */
.tok-k{color:#ff8fb0}                       /* keyword */
.tok-s{color:#a6f24d}                       /* string */
.tok-f{color:#5aa9ff}                       /* função */
.tok-n{color:#ffc46b}                       /* número */
.tok-p{color:#8a94a6}                       /* pontuação */

/* callouts */
.callout{border-left:3px solid var(--accent); background:#0e141c; border-radius:0 10px 10px 0; padding:13px 16px; margin:14px 0; font-size:13.5px; line-height:1.6; color:#cfd6e2}
.callout.warn{border-left-color:var(--warn); background:rgba(255,180,84,.06)}
.callout.danger{border-left-color:var(--danger); background:var(--danger-soft)}
.callout b{color:var(--txt)}
.callout .ct{font-family:var(--mono); font-size:10.5px; text-transform:uppercase; letter-spacing:1px; display:block; margin-bottom:5px; color:var(--accent)}
.callout.warn .ct{color:var(--warn)} .callout.danger .ct{color:var(--danger)}

/* interactive: exercise / challenge / quiz */
.block.exercise{border-color:rgba(52,227,212,.28)}
.block.challenge{border-color:rgba(255,180,84,.28)}
.i-goal{font-size:14.5px; line-height:1.6; color:#e2e8f2; margin:0 0 14px}
.i-goal b{color:var(--accent)}
.steps{counter-reset:s; margin:0 0 14px; padding:0; list-style:none}
.steps li{counter-increment:s; position:relative; padding:6px 0 6px 34px; font-size:13.5px; line-height:1.55; color:#cfd6e2; border-bottom:1px dashed var(--line-soft)}
.steps li:last-child{border-bottom:0}
.steps li::before{content:counter(s); position:absolute; left:0; top:6px; width:22px;height:22px; display:grid;place-items:center;
  font-family:var(--mono); font-size:11px; font-weight:700; color:var(--accent); background:#0e141c; border:1px solid var(--line); border-radius:7px}
.actions{display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-top:6px}
.hintbox{margin-top:12px; font-size:13px}
.hintbox summary{cursor:pointer; font-family:var(--mono); font-size:11.5px; color:var(--warn); list-style:none; display:inline-flex; align-items:center; gap:6px}
.hintbox summary::-webkit-details-marker{display:none}
.hintbox summary::before{content:"💡"}
.hintbox[open] summary{margin-bottom:8px}
.hintbox .hc{color:var(--dim); line-height:1.6; border-left:2px solid var(--warn); padding-left:12px}
.verdict{font-family:var(--mono); font-size:12px; padding:6px 10px; border-radius:8px; display:none}
.verdict.ok{display:inline-block; color:var(--xp); background:rgba(166,242,77,.1); border:1px solid rgba(166,242,77,.3)}
.verdict.no{display:inline-block; color:var(--danger); background:var(--danger-soft); border:1px solid rgba(255,93,120,.3)}

/* quiz */
.quiz .q{margin:0 0 18px; padding:0 0 16px; border-bottom:1px dashed var(--line-soft)}
.quiz .q:last-child{border-bottom:0; padding-bottom:0}
.quiz .q p{font-weight:600; font-size:14px; margin:0 0 10px}
.opt{display:flex; align-items:center; gap:10px; padding:9px 12px; margin:6px 0; border:1px solid var(--line);
  border-radius:9px; cursor:pointer; font-size:13.5px; background:#0d1219; transition:border-color .12s, background .12s}
.opt:hover{border-color:#2f3a4a}
.opt input{accent-color:var(--accent)}
.opt.correct{border-color:var(--xp); background:rgba(166,242,77,.08)}
.opt.wrong{border-color:var(--danger); background:var(--danger-soft)}
.opt .mk{margin-left:auto; font-family:var(--mono); font-size:11px; opacity:0}
.opt.correct .mk,.opt.wrong .mk{opacity:1}

/* input answer */
.ans{display:flex; gap:8px; flex-wrap:wrap; align-items:center}
.ans input,.txin{background:#080b10; border:1px solid var(--line); color:var(--txt); border-radius:8px;
  padding:9px 12px; font-family:var(--mono); font-size:13px; min-width:190px}
.ans input:focus,.txin:focus{border-color:var(--accent); outline:none}

/* buttons */
.btn{display:inline-flex; align-items:center; gap:8px; cursor:pointer; border-radius:9px; padding:9px 16px;
  font-weight:600; font-size:13px; border:1px solid var(--line); background:#131922; color:var(--txt); transition:.14s}
.btn:hover{border-color:#33404f; background:#171e28}
.btn.primary{background:linear-gradient(180deg,#3ff0e0,#22c9bb); color:var(--accent-ink); border-color:transparent; font-weight:700;
  box-shadow:0 10px 26px -12px var(--accent-glow)}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent}
.btn.warn{color:var(--warn); border-color:rgba(255,180,84,.4)}
.btn.danger{color:var(--danger); border-color:rgba(255,93,120,.4)}
.btn:disabled{opacity:.45; cursor:not-allowed}
.btn .kbd-ico{font-family:var(--mono); font-size:11px; opacity:.7}

/* lesson nav footer */
.l-nav{display:flex; justify-content:space-between; gap:12px; margin-top:26px; padding-top:20px; border-top:1px solid var(--line)}
.l-nav a{display:flex; flex-direction:column; gap:2px; padding:12px 16px; border:1px solid var(--line); border-radius:11px;
  background:var(--panel); max-width:46%; transition:.14s}
.l-nav a:hover{border-color:var(--accent); background:var(--elev)}
.l-nav .dir{font-family:var(--mono); font-size:10.5px; color:var(--faint)}
.l-nav .t{font-size:13.5px; font-weight:600}
.l-nav .next{text-align:right; margin-left:auto}
.l-nav a.disabled{opacity:.35; pointer-events:none}

/* complete banner */
.complete-bar{position:sticky; bottom:16px; margin-top:24px; display:flex; align-items:center; gap:14px; flex-wrap:wrap;
  border:1px solid var(--line); border-radius:14px; background:linear-gradient(180deg,#141b26,#0f141c);
  padding:16px 20px; box-shadow:var(--shadow)}
.complete-bar .cbtxt{flex:1 1 auto; min-width:180px}
.complete-bar .cbtxt b{font-size:14px} .complete-bar .cbtxt span{display:block; color:var(--dim); font-size:12.5px; margin-top:2px}
.complete-bar.done{border-color:var(--xp)}

/* labs */
.lab-warn{border:1px solid rgba(255,93,120,.4); background:var(--danger-soft); border-radius:12px; padding:14px 16px; margin-bottom:20px;
  font-size:13px; line-height:1.6; color:#f3d3da}
.lab-warn b{color:var(--danger)}
.lab-stage{border:1px solid var(--line); border-radius:12px; background:#0b0f15; padding:0; overflow:hidden; margin:16px 0}
.lab-chrome{display:flex; align-items:center; gap:8px; padding:9px 12px; background:#0d1119; border-bottom:1px solid var(--line); font-family:var(--mono); font-size:11px; color:var(--faint)}
.lab-chrome .u{flex:1; background:#080b10; border:1px solid var(--line); border-radius:99px; padding:3px 10px; color:var(--dim)}
.lab-body{padding:22px}
.mission{display:flex; align-items:flex-start; gap:12px; border:1px solid rgba(255,180,84,.3); background:rgba(255,180,84,.06);
  border-radius:11px; padding:14px 16px; margin:16px 0}
.mission .mi{font-size:20px}
.mission h4{margin:0 0 4px; font-size:13.5px; color:var(--warn); font-family:var(--mono); letter-spacing:.5px; text-transform:uppercase}
.mission p{margin:0; font-size:13.5px; color:#e2e8f2; line-height:1.55}
.solved-stamp{display:none; margin-left:auto; font-family:var(--mono); font-size:11px; color:var(--xp); border:1px solid var(--xp); border-radius:7px; padding:4px 9px; transform:rotate(4deg)}
.mission.solved{border-color:var(--xp); background:rgba(166,242,77,.07)}
.mission.solved .solved-stamp{display:inline-block}

/* fake UI bits inside labs */
.fake-card{border:1px solid var(--line); border-radius:12px; background:#11161f; padding:20px; max-width:360px}
.fake-row{display:flex; justify-content:space-between; padding:8px 0; border-bottom:1px dashed var(--line-soft); font-size:14px}
.big-num{font-family:var(--display); font-weight:800; font-size:34px}
.locked-panel{border:1px dashed var(--line); border-radius:12px; padding:26px; text-align:center; color:var(--faint)}
.admin-panel{border:1px solid var(--danger); border-radius:12px; padding:22px; background:var(--danger-soft)}

/* cheatsheet / referência */
.ref-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:14px}
.ref-card{border:1px solid var(--line); border-radius:12px; background:var(--panel); padding:18px}
.ref-card h3{margin:0 0 12px; font-size:14px; font-family:var(--display); font-weight:600}
.ref-card table{width:100%; border-collapse:collapse; font-size:12.5px}
.ref-card td{padding:6px 0; border-bottom:1px dashed var(--line-soft); vertical-align:top}
.ref-card td:first-child{white-space:nowrap; padding-right:12px}
.ref-card tr:last-child td{border-bottom:0}

/* guia visual das abas */
.guia-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 20px}
.gtab{font-family:var(--mono);font-size:12px;padding:7px 13px;border:1px solid var(--line);border-radius:8px;color:var(--dim);background:var(--panel);cursor:pointer;transition:.12s}
.gtab:hover{border-color:#33404f;color:var(--txt)}
.gtab.on{border-color:var(--accent);color:var(--accent);background:var(--accent-ink)}
.guia-diagram{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:18px;background:#0b0f15}
.guia-diagram svg{display:block}
.guia-passos{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.guia-passos li{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:12px 14px}
.guia-passos .gn{flex:0 0 auto;width:24px;height:24px;display:grid;place-items:center;border-radius:7px;background:var(--accent);color:var(--accent-ink);font-family:var(--mono);font-weight:700;font-size:12px;margin-top:1px}
.guia-passos li>span:last-child{font-size:13.5px;line-height:1.55;color:#cfd6e2}
.guia-passos b{color:var(--txt)}
.guia-passos code{background:#0a0e14;border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:12px;color:var(--accent)}

/* aprender: playground + cola */
.ex-chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px}
.ex-chip{font-family:var(--mono);font-size:12px;padding:7px 12px;border:1px solid var(--line);border-radius:8px;color:var(--dim);background:var(--panel);cursor:pointer;transition:.12s}
.ex-chip:hover{border-color:#33404f;color:var(--txt)}
.ex-chip.on{border-color:var(--accent);color:var(--accent);background:var(--accent-ink)}
.ex-instru{border:1px solid rgba(52,227,212,.28);background:#0e141c;border-radius:10px;padding:11px 14px;margin:0 0 14px;font-size:13.5px;line-height:1.5;color:#cfd6e2}
.ex-instru b{color:var(--accent)}
.ex-instru .ex-sol{font-size:11.5px;padding:4px 10px;margin-left:4px}
.play-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}
.play-editors{display:flex;flex-direction:column;gap:5px}
.ple-lab{font-family:var(--mono);font-size:10.5px;letter-spacing:1px;text-transform:uppercase;color:var(--faint);margin-top:6px}
.ple{width:100%;min-height:110px;resize:vertical;background:#080b10;border:1px solid var(--line);border-radius:9px;color:#d6deeb;
  font-family:var(--mono);font-size:12.5px;line-height:1.55;padding:10px 12px;tab-size:2}
.ple:focus{outline:none;border-color:var(--accent)}
.play-right{display:flex;flex-direction:column;gap:7px}
.play-run{display:flex;align-items:center;gap:10px}
.play-prev-lab,.play-con-lab{font-family:var(--mono);font-size:10.5px;letter-spacing:1px;text-transform:uppercase;color:var(--faint);display:flex;align-items:center;gap:10px}
.play-prev{width:100%;height:230px;border:1px solid var(--line);border-radius:10px;background:#fff}
.pcl-clear{margin-left:auto;background:transparent;border:1px solid var(--line);color:var(--dim);border-radius:6px;font-size:10px;padding:2px 8px;cursor:pointer;font-family:var(--mono)}
.pcl-clear:hover{color:var(--accent);border-color:var(--accent)}
.play-con{background:#080b10;border:1px solid var(--line);border-radius:10px;min-height:70px;max-height:170px;overflow:auto;
  font-family:var(--mono);font-size:12px;line-height:1.5;padding:6px 0}
.play-con:empty::before{content:"o console.log() do seu código aparece aqui…";color:var(--faint);padding:8px 12px;display:block;font-size:11.5px}
.pcl-line{padding:3px 12px;border-bottom:1px solid var(--line-soft);color:#cfe0dd;white-space:pre-wrap;word-break:break-word}
.pcl-line:last-child{border-bottom:0}
.pcl-line.e{color:var(--danger)} .pcl-line.w{color:var(--warn)}
.cola-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}
.cola-card{border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:18px}
.cola-card h3{margin:0 0 12px;font-size:14.5px;font-family:var(--display);font-weight:600}
.cola-d{font-size:12.5px;color:var(--dim);line-height:1.5;margin:10px 0 5px}
.cola-d:first-of-type{margin-top:0}
.cola-d code{background:#0a0e14;border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:11.5px;color:var(--accent)}
.cola-pre{background:#080b10;border:1px solid var(--line);border-radius:8px;padding:11px 13px;overflow-x:auto;
  font-family:var(--mono);font-size:12px;line-height:1.6;color:#cbd3e0;margin:0}
@media(max-width:820px){.play-grid{grid-template-columns:1fr}.play-prev{height:200px}}

/* toast */
.toast-wrap{position:fixed; right:20px; bottom:20px; z-index:120; display:flex; flex-direction:column; gap:10px; pointer-events:none}
.toast{display:flex; align-items:center; gap:12px; min-width:230px; max-width:340px; padding:13px 16px; border-radius:12px;
  background:linear-gradient(180deg,#161d28,#0f141c); border:1px solid var(--line); box-shadow:var(--shadow);
  transform:translateX(120%); animation:slidein .4s cubic-bezier(.2,.9,.2,1) forwards; pointer-events:auto}
.toast.out{animation:slideout .3s ease forwards}
@keyframes slidein{to{transform:translateX(0)}}
@keyframes slideout{to{transform:translateX(120%); opacity:0}}
.toast .ti{width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;border-radius:9px;font-size:16px;background:#0d1219;border:1px solid var(--line)}
.toast.xp{border-color:var(--xp)} .toast.xp .ti{color:var(--xp); border-color:var(--xp)}
.toast.badge{border-color:var(--accent)} .toast.badge .ti{color:var(--accent)}
.toast b{font-size:13.5px} .toast small{display:block; color:var(--dim); font-size:11.5px; margin-top:1px; font-family:var(--mono)}

/* fx: xp float + confetti */
.fx-layer{position:fixed; inset:0; pointer-events:none; z-index:110}
.xp-float{position:absolute; font-family:var(--display); font-weight:800; color:var(--xp); font-size:24px;
  text-shadow:0 0 16px rgba(166,242,77,.6); animation:xpfloat 1.2s ease forwards}
@keyframes xpfloat{0%{transform:translateY(0) scale(.6); opacity:0}20%{opacity:1; transform:translateY(-10px) scale(1.1)}100%{transform:translateY(-70px) scale(1); opacity:0}}
.confetti{position:absolute; width:9px;height:14px; top:-20px; animation:fall linear forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(720deg); opacity:.2}}

/* modal (level up / badge) */
.modal-scrim{position:fixed; inset:0; z-index:130; background:rgba(4,6,10,.72); backdrop-filter:blur(4px); display:grid; place-items:center; padding:20px}
.modal-scrim[hidden]{display:none}
.modal{width:min(440px,92vw); border:1px solid var(--accent); border-radius:18px; background:linear-gradient(180deg,#121924,#0d121a);
  padding:34px 30px; text-align:center; box-shadow:0 30px 80px -30px rgba(52,227,212,.4); animation:pop .4s cubic-bezier(.2,1.3,.4,1)}
@keyframes pop{from{transform:scale(.85); opacity:0}to{transform:scale(1); opacity:1}}
.modal .big-badge{width:88px;height:88px;margin:0 auto 16px; display:grid;place-items:center; border-radius:22px; font-size:40px;
  background:radial-gradient(circle at 30% 25%,#7ffcf0,var(--accent)); color:var(--accent-ink);
  box-shadow:0 0 40px -6px var(--accent-glow); animation:spin .8s ease}
@keyframes spin{from{transform:rotate(-18deg) scale(.6)}to{transform:rotate(0) scale(1)}}
.modal h2{font-family:var(--display); font-weight:800; font-size:24px; margin:0 0 6px; letter-spacing:-.5px}
.modal p{color:var(--dim); font-size:14px; line-height:1.6; margin:0 0 22px}
.modal .rank-up{font-family:var(--mono); color:var(--accent); font-size:12px; letter-spacing:1px; text-transform:uppercase}

/* badges gallery on dashboard */
.badge-shelf{display:flex; gap:10px; flex-wrap:wrap}
.bdg{width:64px; text-align:center}
.bdg .disc{width:52px;height:52px;margin:0 auto 5px; display:grid;place-items:center; border-radius:14px; font-size:22px;
  background:#11161f; border:1px solid var(--line); filter:grayscale(1) opacity(.4)}
.bdg.have .disc{filter:none; background:radial-gradient(circle at 30% 25%,#1c2a2a,#131b24); border-color:var(--accent); color:var(--accent);
  box-shadow:0 0 20px -8px var(--accent-glow)}
.bdg small{font-size:9.5px; color:var(--faint); font-family:var(--mono); line-height:1.2; display:block}
.bdg.have small{color:var(--dim)}

/* reveal animation on stage */
.reveal{opacity:0; transform:translateY(14px); animation:rise .5s cubic-bezier(.2,.8,.2,1) forwards}
@keyframes rise{to{opacity:1; transform:none}}

/* ---------- responsive ---------- */
@media(max-width:920px){
  :root{--sb-w:270px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .tb-omni{display:none}
  .tb-menu{display:grid; place-items:center}
  .shell{grid-template-columns:1fr}
  .sidebar{position:fixed; top:var(--tb-h); left:0; width:min(300px,86vw); z-index:55; transform:translateX(-104%); transition:transform .28s}
  .sidebar.open{transform:none; box-shadow:var(--shadow)}
  .scrim.show{display:block; position:fixed; inset:var(--tb-h) 0 0; background:rgba(4,6,10,.6); z-index:54}
  .lvl-meta{display:none}
}
@media(max-width:560px){
  .hud-streak{display:none}
  .stat-row{grid-template-columns:repeat(2,1fr); gap:8px}
  .stage{padding:22px 16px 80px}
  .block{padding:18px 16px}
  .hero{padding:26px 20px}
  .l-nav a{max-width:48%}
}
@media(prefers-reduced-motion:reduce){*{animation-duration:.001s!important; transition-duration:.001s!important}}