:root{
  --bg:#0b1020; --bg2:#111831; --card:#151d3a; --card2:#1b2547; --line:#26325c;
  --ink:#eef2ff; --muted:#9aa6c8; --brand:#2563eb; --brand2:#3b82f6; --brand-soft:rgba(37,99,235,.16);
  --green:#22c55e; --gold:#f59e0b; --danger:#ef4444; --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--ink)}
body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased;min-height:100vh;overflow-x:hidden}
h1,h2,h3{font-family:"Plus Jakarta Sans",Inter,sans-serif;letter-spacing:-.02em;line-height:1.2}
a{color:var(--brand2)}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit;color:var(--ink);background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;width:100%;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--brand2)}
.hidden{display:none!important}

/* topo */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:12px 16px;background:rgba(11,16,32,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-family:"Plus Jakarta Sans",sans-serif}
.logo-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),#7c3aed);display:grid;place-items:center;font-size:13px;font-weight:800;color:#fff;letter-spacing:.5px}
.logo small{display:block;font-weight:500;color:var(--muted);font-size:11px;font-family:Inter,sans-serif}
.top .sp{flex:1}
.icon-btn{background:var(--card);border:1px solid var(--line);color:var(--ink);border-radius:10px;height:38px;min-width:38px;padding:0 10px;display:inline-flex;align-items:center;gap:6px;text-decoration:none;font-size:14px}

.wrap{max-width:1180px;margin:0 auto;padding:20px 16px 60px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;padding:13px 18px;font-weight:700;background:var(--brand);color:#fff;text-decoration:none;transition:filter .15s}
.btn:hover{filter:brightness(1.1)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.btn.green{background:var(--green);color:#052e16}
.btn.gold{background:var(--gold);color:#1f1300}
.btn.sm{padding:9px 13px;font-size:14px;border-radius:9px}
.btn.block{width:100%}
.btn[disabled]{opacity:.6;cursor:default}
.muted{color:var(--muted)}
.err{color:#fca5a5;font-size:14px;min-height:20px;margin-top:8px}

/* login */
.login{min-height:calc(100vh - 60px);display:grid;place-items:center;padding:24px 16px}
.login-card{width:100%;max-width:420px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px 22px}
.login-card h1{font-size:1.5rem;margin-bottom:6px}
.login-card p{color:var(--muted);margin-bottom:18px}
.login-card label{display:block;font-size:13px;color:var(--muted);margin:0 0 6px}
.login-card .btn{margin-top:14px}
.code-input{font-size:28px;letter-spacing:10px;text-align:center;font-weight:800}
.linkbtn{background:none;border:0;color:var(--brand2);font-size:14px;margin-top:14px;padding:4px}

/* home */
.hello{margin:6px 0 18px}
.hello h1{font-size:1.45rem}
.section-title{font-size:1.1rem;margin:26px 0 12px;display:flex;align-items:center;gap:8px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:640px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:960px){.grid{grid-template-columns:repeat(4,1fr);gap:16px}}
.course{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;transition:transform .15s,border-color .15s}
.course:hover{transform:translateY(-2px);border-color:var(--brand2)}
.course .cover{aspect-ratio:16/9;background:var(--card2) center/cover no-repeat;position:relative}
.course .cover.ph{display:grid;place-items:center;font-weight:800;font-size:1.1rem;padding:10px;text-align:center;background:linear-gradient(135deg,#1e3a8a,#4c1d95)}
.course .body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:6px;flex:1}
.course h3{font-size:.95rem;line-height:1.25}
.course .meta{font-size:12px;color:var(--muted)}
.bar{height:6px;background:var(--line);border-radius:6px;overflow:hidden}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--green));border-radius:6px}
.course.locked .cover{filter:grayscale(.7) brightness(.55)}
.lock{position:absolute;top:8px;right:8px;background:rgba(0,0,0,.65);border-radius:999px;padding:4px 9px;font-size:12px;font-weight:700}
.continue{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory}
.continue .course{min-width:240px;max-width:260px;scroll-snap-align:start}
.empty{background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);padding:24px;text-align:center;color:var(--muted)}

/* curso */
.course-hero{display:grid;gap:16px;margin-bottom:18px}
@media(min-width:800px){.course-hero{grid-template-columns:360px 1fr;align-items:center}}
.course-hero .cover{aspect-ratio:16/9;border-radius:var(--radius);background:var(--card2) center/cover no-repeat;border:1px solid var(--line)}
.course-hero h1{font-size:1.5rem;margin-bottom:6px}
.course-hero p{color:var(--muted);margin-bottom:12px}
.module{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:10px;overflow:hidden}
.module>button{width:100%;display:flex;align-items:center;gap:10px;background:none;border:0;color:var(--ink);padding:14px 16px;text-align:left;font-weight:700}
.module>button .cnt{margin-left:auto;font-weight:500;color:var(--muted);font-size:13px;white-space:nowrap}
.module>button .chev{transition:transform .2s}
.module.open>button .chev{transform:rotate(90deg)}
.module ul{list-style:none;border-top:1px solid var(--line);display:none}
.module.open ul{display:block}
.lesson-row{display:flex;align-items:center;gap:12px;padding:10px 16px;text-decoration:none;color:var(--ink);border-bottom:1px solid rgba(38,50,92,.6)}
.lesson-row:last-child{border-bottom:0}
.lesson-row:hover{background:var(--card2)}
.lesson-row .th{width:84px;flex:0 0 84px;aspect-ratio:16/9;border-radius:7px;background:var(--card2) center/cover no-repeat}
.lesson-row .t{flex:1;font-size:14px}
.chk{width:22px;height:22px;flex:0 0 22px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:12px;color:transparent}
.chk.on{background:var(--green);border-color:var(--green);color:#052e16;font-weight:900}
.lesson-row.cur{background:var(--brand-soft)}

/* aula */
.lesson-layout{display:grid;gap:18px}
@media(min-width:1000px){.lesson-layout{grid-template-columns:1fr 340px;align-items:start}}
.player{position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.player iframe,.player>div{position:absolute;inset:0;width:100%;height:100%;border:0}
.crumb{font-size:13px;color:var(--muted);margin-bottom:8px}
.crumb a{color:var(--muted);text-decoration:none}
.lesson-title{font-size:1.3rem;margin:14px 0 10px}
.lesson-actions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.lesson-actions .sp{flex:1}
.content{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;white-space:normal;word-wrap:break-word}
.content p{margin-bottom:10px}
.content p:last-child{margin-bottom:0}
.note{font-size:13px;color:var(--muted);margin-top:10px}
.side{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.side h3{padding:14px 16px;font-size:1rem;border-bottom:1px solid var(--line)}
.side .mod-t{padding:10px 16px 4px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
@media(min-width:1000px){.side{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow:auto}}

/* conta */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;max-width:520px}
.panel label{display:block;font-size:13px;color:var(--muted);margin:12px 0 6px}
.row{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}

.loading{display:grid;place-items:center;min-height:40vh;color:var(--muted)}
.spin{width:34px;height:34px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--brand2);animation:sp 0.8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--card2);border:1px solid var(--line);padding:10px 16px;border-radius:10px;z-index:99;font-size:14px}