:root{
  --bg:#0b1020; --bg2:#111831; --card:#141c38; --line:#243055; --tx:#e8ecf8; --mut:#9aa6c7;
  --pri:#6c8cff; --pri2:#8b5cf6; --ok:#22c55e; --warn:#f59e0b; --bad:#ef4444; --r:14px;
  --grad:linear-gradient(135deg,#6c8cff,#8b5cf6);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--pri);text-decoration:none} a:hover{text-decoration:underline}
img{max-width:100%;display:block}
h1,h2,h3{line-height:1.2;margin:0 0 .6em} h1{font-size:clamp(1.8rem,4vw,2.8rem)} h2{font-size:1.5rem;margin-top:1.6em} h3{font-size:1.05rem}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px} .narrow{max-width:820px}
.muted{color:var(--mut)} .small{font-size:.85rem} .center{text-align:center}
.block{padding:40px 20px} .block-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.block-head h2,.block-head h1{margin-top:0}

/* topo */
.top{position:sticky;top:0;z-index:20;background:rgba(11,16,32,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:800;letter-spacing:.3px}
.logo:hover{text-decoration:none} .logo sup{font-size:.6em;color:var(--mut)}
.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--grad);color:#fff;font-weight:900}
.nav{display:flex;gap:22px;flex:1} .nav a{color:var(--tx);font-weight:500;font-size:.95rem}
.auth{display:flex;gap:10px;align-items:center}
.menu-btn{display:none;background:none;border:0;color:var(--tx);font-size:1.5rem;cursor:pointer}
@media(max-width:800px){
  .menu-btn{display:block;margin-left:auto}
  .nav,.auth{display:none}
  .nav-open .nav,.nav-open .auth{display:flex;position:absolute;left:0;right:0;background:var(--bg2);flex-direction:column;padding:16px 20px;gap:14px}
  .nav-open .nav{top:64px} .nav-open .auth{top:calc(64px + 170px);border-bottom:1px solid var(--line)}
}

/* botões */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 18px;border-radius:10px;border:0;background:var(--grad);color:#fff;font-weight:600;font-size:.95rem;cursor:pointer;transition:transform .15s,opacity .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)} .btn:disabled{opacity:.6;cursor:wait}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--tx)}
.btn.big{padding:13px 24px;font-size:1rem} .btn.full{width:100%}
.btn.sm{padding:6px 12px;font-size:.85rem}
.link{background:none;border:0;color:var(--pri);cursor:pointer;font:inherit}

/* hero */
.hero{padding:90px 0 60px;background:radial-gradient(900px 400px at 20% 0%,rgba(108,140,255,.18),transparent),radial-gradient(700px 400px at 90% 10%,rgba(139,92,246,.16),transparent)}
.eyebrow{color:var(--pri);font-weight:600;text-transform:uppercase;letter-spacing:.12em;font-size:.8rem}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.15rem;color:var(--mut);max-width:680px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;color:var(--tx);transition:transform .2s,border-color .2s}
.card:hover{text-decoration:none;transform:translateY(-3px);border-color:var(--pri)}
.card-img{aspect-ratio:16/9;background:var(--bg2);overflow:hidden} .card-img img{width:100%;height:100%;object-fit:cover}
.ph{width:100%;height:100%;display:grid;place-items:center;font-size:3rem;font-weight:800;background:var(--grad);color:#fff}
.card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:4px;flex:1} .card-body h3{margin:0}
.card-foot{margin-top:auto;padding-top:8px;display:flex;justify-content:space-between;align-items:center}
.price{font-weight:700} .price s{color:var(--mut);font-weight:400;font-size:.85em}
.tag{font-size:.75rem;padding:3px 9px;border-radius:99px;background:var(--bg2);border:1px solid var(--line)}
.tag.free{background:rgba(34,197,94,.12);border-color:rgba(34,197,94,.4);color:#86efac}
.progress{height:6px;background:var(--bg2);border-radius:99px;overflow:hidden;width:100%} .progress i{display:block;height:100%;background:var(--grad)}

/* filtros */
.filters{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}
.filters input{max-width:420px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:6px 14px;border-radius:99px;border:1px solid var(--line);background:transparent;color:var(--mut);cursor:pointer;font-size:.85rem}
.chip.on{background:var(--grad);color:#fff;border-color:transparent}

/* página do curso */
.course-hero{padding:50px 0;background:linear-gradient(180deg,var(--bg2),var(--bg))}
.course-grid{display:grid;grid-template-columns:1fr 360px;gap:40px;align-items:start}
.crumbs{font-size:.85rem;color:var(--mut)}
.facts{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--mut)}
.buy{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;position:sticky;top:84px}
.buy-in{padding:20px;display:flex;flex-direction:column;gap:8px}
.buy-in p{margin:0}
.price-big{font-size:2rem;font-weight:800}
@media(max-width:900px){.course-grid{grid-template-columns:1fr}.buy{position:static}}
.video{aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;background:#000;margin:10px 0 20px} .video iframe{width:100%;height:100%;border:0}
.outline details{background:var(--card);border:1px solid var(--line);border-radius:10px;margin-bottom:8px}
.outline summary{padding:12px 16px;cursor:pointer;display:flex;justify-content:space-between;gap:10px;font-weight:600}
.outline ol{margin:0;padding:0 16px 12px 36px} .outline li{display:flex;justify-content:space-between;gap:12px;padding:4px 0;border-top:1px solid var(--line)}
.prose{color:#cfd6ea} .prose img{border-radius:10px}
.cta-band{background:var(--card);border:1px solid var(--line);border-radius:var(--r);text-align:center;margin:40px auto}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,420px));gap:20px}
.plan{background:var(--card);border:1px solid var(--pri);border-radius:var(--r);padding:24px}

/* formulários */
.form{display:flex;flex-direction:column;gap:14px}
label{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:var(--mut)}
input,select,textarea{background:var(--bg2);border:1px solid var(--line);color:var(--tx);border-radius:10px;padding:11px 13px;font:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid var(--pri);border-color:transparent}
.auth-box{max-width:440px;padding:50px 20px}
.msg{min-height:1.2em;margin:0;font-size:.9rem} .msg.err{color:#fca5a5} .msg.ok{color:#86efac}
.note{margin-top:24px;padding:14px 16px;border-radius:10px;background:rgba(108,140,255,.1);border:1px solid rgba(108,140,255,.3);font-size:.9rem}

/* player */
.player-page{display:grid;grid-template-columns:340px 1fr;min-height:calc(100vh - 64px)}
.lesson-list{background:var(--bg2);border-right:1px solid var(--line);overflow:auto;max-height:calc(100vh - 64px);position:sticky;top:64px;padding:16px}
.lesson-list h2{font-size:1rem;margin:0 0 8px} .lesson-list h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--mut);margin:16px 0 6px}
.lesson-list a{display:flex;gap:8px;padding:8px 10px;border-radius:8px;color:var(--tx);font-size:.9rem}
.lesson-list a:hover{background:var(--card);text-decoration:none} .lesson-list a.on{background:var(--card);outline:1px solid var(--pri)}
.lesson-list a .ck{width:18px;flex:none;color:var(--ok)}
.player-main{padding:20px 28px}
.player{aspect-ratio:16/9;background:#000;border-radius:var(--r);overflow:hidden} .player iframe{width:100%;height:100%;border:0}
.player .empty{height:100%;display:grid;place-items:center;color:var(--mut);padding:20px;text-align:center}
.player-info{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:16px 0}
@media(max-width:900px){.player-page{grid-template-columns:1fr}.lesson-list{position:static;max-height:none;order:2}.player-main{padding:12px}}

/* painel admin */
.adm-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:24px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px} .stat b{display:block;font-size:1.7rem}
table{width:100%;border-collapse:collapse;font-size:.9rem} th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--mut);font-weight:600} tr:hover td{background:rgba(255,255,255,.02)}
.table-wrap{overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--r)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
td input{padding:6px 8px;width:100%}

/* rodapé */
.foot{border-top:1px solid var(--line);margin-top:60px;padding:40px 0 20px;background:var(--bg2)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px} .foot h4{margin:0 0 10px} .foot-grid a{display:block;color:var(--mut);padding:3px 0}
.copy{color:var(--mut);font-size:.8rem;padding-top:24px}
@media(max-width:700px){.foot-grid{grid-template-columns:1fr}}
.wa{position:fixed;right:18px;bottom:18px;width:54px;height:54px;border-radius:50%;background:#25d366;color:#fff;display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.35);z-index:30}
body[data-app] .wa{display:none}