:root{
  --primary:#1967d2;
  --dark:#114b9e;
  --bg:#edf3fb;
  --panel:#fff;
  --line:#d6e0ee;
  --text:#132033;
  --muted:#607089;
  --soft:#f8fbff;
  --note:#fff7d6;
  --code:#101827;
  --green:#0f766e;
  --purple:#6d28d9;
}
*{box-sizing:border-box;margin:0;padding:0}
body{min-height:100vh;font-family:"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}
header{height:46px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 16px;box-shadow:0 2px 8px #0003}
.header-left{display:flex;align-items:center;gap:12px;min-width:0}
header h1{margin:0;font-size:18px;font-weight:900;line-height:1.15;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand{font-size:13px;font-weight:800;white-space:nowrap}
.portal-link{display:inline-flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;font-size:13px;font-weight:900;white-space:nowrap;border:1px solid rgba(255,255,255,.38);background:rgba(255,255,255,.14);border-radius:999px;padding:6px 10px}
.portal-link:hover{background:rgba(255,255,255,.24)}
.module-menu{height:48px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px;padding:7px 14px;overflow-x:auto;scrollbar-width:thin}
.module-btn{border:1px solid #dbeafe;background:#f8fbff;color:#0f3f86;border-radius:999px;padding:8px 14px;font-size:13px;font-weight:900;cursor:pointer;white-space:nowrap}
.module-btn:hover{background:#eaf2ff;color:var(--primary)}
.module-btn.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 2px 7px rgba(25,103,210,.28)}
.layout{height:calc(100vh - 94px);display:grid;grid-template-columns:160px 1fr}
nav{background:#fff;border-right:1px solid var(--line);padding:10px 6px;overflow:auto}
nav h3{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:6px 6px 10px}
.nav-btn{width:100%;border:0;background:transparent;color:#0f172a;cursor:pointer;text-align:left;font-size:12.5px;font-weight:750;padding:8px 7px;border-radius:7px;margin-bottom:4px}
.nav-btn:hover{background:#eaf2ff;color:var(--primary)}
.nav-btn.active{background:var(--primary);color:#fff;box-shadow:0 2px 7px rgba(25,103,210,.35)}
main{padding:13px;overflow:hidden;min-width:0}
.top-row{min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.top-row h2{font-size:23px;color:var(--dark);font-weight:900;letter-spacing:-.3px}
.objective{font-size:13px;text-align:right;max-width:560px;line-height:1.35}
.lesson{height:calc(100vh - 94px - 26px - 44px - 10px);overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:0 4px 14px rgba(15,23,42,.08);line-height:1.56}
.lesson h3{font-size:21px;color:var(--dark);margin:22px 0 8px}
.lesson h3:first-child{margin-top:0}
.lesson h4{font-size:17px;color:var(--dark);margin:18px 0 7px}
.lesson p{margin:7px 0}
.lesson ul,.lesson ol{margin:8px 0 12px 23px}
.lesson li{margin:5px 0}
.lesson strong{font-weight:800}
.hero-box{background:linear-gradient(135deg,#eaf2ff,#fff);border:1px solid #bfdbfe;border-radius:14px;padding:18px;margin-bottom:16px}
.hero-box h3{margin:0 0 8px}
.example-box,.concept-box{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:13px 14px;margin:12px 0}
.note-box{background:var(--note);border-left:5px solid #f59e0b;border-radius:10px;padding:13px 14px;margin:14px 0}
.ok-box{background:#eefbf5;border-left:5px solid #16a34a;border-radius:10px;padding:13px 14px;margin:14px 0}
.danger-box{background:#fff1f2;border-left:5px solid #dc2626;border-radius:10px;padding:13px 14px;margin:14px 0}
.deep-box{background:#f5f3ff;border:1px solid #ddd6fe;border-left:5px solid var(--purple);border-radius:10px;padding:14px 15px;margin:15px 0}
.deep-box strong{color:#5b21b6}
.optional-box{background:#f0fdfa;border:1px solid #99f6e4;border-left:5px solid var(--green);border-radius:10px;padding:14px 15px;margin:15px 0}
.command{display:block;background:var(--code);color:#f8fafc;border-radius:8px;padding:12px 14px;margin:9px 0 13px;overflow:auto;font-family:Consolas,"Courier New",monospace;font-size:14px;line-height:1.5;white-space:pre-wrap}
.inline-code{background:#eef4fb;border:1px solid #d6e0ee;border-radius:5px;padding:1px 5px;font-family:Consolas,"Courier New",monospace;font-size:.95em}
.flow{background:#f8fbff;border:1px solid var(--line);border-radius:10px;padding:14px;margin:12px 0;font-family:Consolas,"Courier New",monospace;white-space:pre-wrap;line-height:1.55}
.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}
.mini-card{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:14px}
.mini-card strong{color:var(--dark)}
.mbb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:14px 0}
.mbb-card{border:1px solid var(--line);background:#fff;border-radius:12px;padding:14px}
.mbb-card strong{display:block;color:var(--dark);font-size:17px;margin-bottom:5px}
.mbb-arrow{text-align:center;color:var(--muted);font-weight:900;margin:4px 0}
.cycle-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0}
.cycle-card{background:#fff;border:1px solid #bfdbfe;border-radius:11px;padding:13px;text-align:center}
.cycle-card strong{display:block;color:var(--dark);margin-bottom:4px}
.term-grid{display:grid;grid-template-columns:1.05fr 1.2fr 1.3fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:13px 0}
.term-grid>div{background:#fff;padding:10px 12px}
.term-grid .head{background:#eaf2ff;color:var(--dark);font-weight:900}
.placeholder-flow{min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(135deg,#fbfdff,#f3f8ff);border:2px dashed #93b7e6;border-radius:14px;padding:24px;margin:16px 0}
.placeholder-flow strong{font-size:18px;color:var(--dark);margin-bottom:6px}
.placeholder-flow span{max-width:680px;color:var(--muted)}
.task-box{background:#f8fbff;border:1px solid var(--line);border-left:5px solid var(--primary);border-radius:10px;padding:14px 15px;margin:14px 0}
.task-box h4{margin:0 0 7px;color:var(--dark)}
.answer-box{border:1px solid #b9d3f6;background:#fff;border-radius:10px;margin:12px 0;overflow:hidden}
.answer-box summary{cursor:pointer;font-weight:900;color:var(--dark);padding:11px 13px;background:#f3f8ff}
.answer-box[open] summary{border-bottom:1px solid var(--line)}
.answer-box .answer-content{padding:12px 13px}
.check-list{margin:10px 0 12px 0!important;list-style:none}
.check-list li{position:relative;padding-left:25px;margin:8px 0}
.check-list li::before{content:'✓';position:absolute;left:2px;top:0;color:#15803d;font-weight:900}
.part-badge{display:inline-block;background:#eaf2ff;color:var(--dark);border:1px solid #b9d3f6;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:900;margin-bottom:10px}
.hours{display:inline-block;margin-left:6px;color:var(--muted);font-size:12px;font-weight:800}
.roadmap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:14px 0}
.roadmap-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 13px}
.roadmap-item strong{color:var(--dark)}
.code-compare{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}
.code-compare>div{min-width:0}
.code-compare h4{margin:0 0 6px}
.link-card{display:block;text-decoration:none;color:inherit;background:#fff;border:1px solid #bfdbfe;border-radius:10px;padding:13px 14px}
.link-card:hover{background:#f8fbff}
.lesson-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--line);margin-top:24px;padding-top:16px}
.lesson-footer button{border:1px solid #b9d3f6;background:#fff;color:var(--dark);font-weight:800;border-radius:8px;padding:9px 12px;cursor:pointer}
.lesson-footer button:hover{background:#eaf2ff}
.lesson-footer button:disabled{opacity:.45;cursor:default;background:#fff}
@media(max-width:1100px){
  .cycle-grid{grid-template-columns:repeat(2,1fr)}
  .mbb-grid{grid-template-columns:1fr}
  .term-grid{grid-template-columns:1fr 1fr 1fr}
}
@media(max-width:1050px){
  body{overflow:auto}
  .module-menu{position:sticky;top:0;z-index:40}
  .layout{height:auto;grid-template-columns:1fr}
  nav{position:sticky;top:48px;z-index:30;display:flex;gap:6px;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:7px 8px}
  nav h3{display:none}
  .nav-btn{width:auto;min-width:max-content;margin:0;padding:8px 10px}
  main{overflow:visible;padding:10px}
  .top-row{height:auto;min-height:44px;align-items:flex-start;flex-wrap:wrap;gap:6px 12px}
  .top-row h2{flex:1 1 320px;min-width:0;font-size:22px;line-height:1.16}
  .objective{flex:1 1 320px;max-width:none;text-align:left;font-size:12.5px}
  .lesson{height:auto;min-height:calc(100vh - 150px);overflow:visible}
}
@media(max-width:760px){
  .module-menu{height:46px;min-height:46px;padding:6px 7px;gap:6px}
  .module-btn{font-size:12px;padding:7px 10px}
  nav{top:46px}
  header{height:46px;min-height:46px;max-height:46px;padding:0 10px;gap:8px}
  .header-left{gap:8px;flex:1 1 auto;min-width:0}
  header h1{font-size:16px;flex:1 1 auto;min-width:0}
  .portal-link{font-size:12px;padding:5px 9px;flex:0 0 auto}
  .brand{display:none}
  main{padding:9px}
  .top-row h2{flex-basis:100%;font-size:18px}
  .objective{flex-basis:100%;font-size:12px}
  .lesson{padding:16px;border-radius:10px}
  .lesson h3{font-size:19px}
  .mini-grid,.roadmap,.code-compare,.cycle-grid{grid-template-columns:1fr}
  .term-grid{grid-template-columns:1fr}
  .term-grid .head{display:none}
  .command{font-size:12.5px}
  .lesson-footer{align-items:stretch}
  .lesson-footer button{flex:1}
}

/* MbB: comandos legiveis no celular, com copia do texto original. */
.command-copy-wrap{position:relative;min-width:0;margin:9px 0 13px;}
.command-copy-wrap > pre.command{margin:0;padding-top:45px;max-width:100%;overflow-wrap:anywhere;word-break:normal;}
.command-copy-button{position:absolute;right:8px;top:8px;z-index:1;border:1px solid #64748b;border-radius:7px;background:#334155;color:#fff;padding:5px 10px;font:inherit;font-size:12px;font-weight:800;cursor:pointer;}
.command-copy-button:focus-visible{outline:3px solid #93c5fd;outline-offset:2px;}
.command-copy-button.copy-error{border-color:#f87171;color:#fee2e2;}
@media(max-width:720px){.command-copy-wrap > pre.command{white-space:pre-wrap;overflow-wrap:anywhere;overflow-x:hidden;}}