:root{--bg:#0a0a0f;--bg-soft:#12121a;--fg:#f4f4f7;--muted:#9a9ab0;--accent:#6d5cf5;--accent-2:#00d4a0;--border:#23232f;--radius:14px}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5}a{color:inherit;text-decoration:none}.container{max-width:980px;margin:0 auto;padding:0 24px}.btn{display:inline-block;background:var(--accent);color:#fff;padding:14px 26px;border-radius:999px;font-weight:600;font-size:15px;border:none;cursor:pointer;transition:transform .12s ease,opacity .12s ease}.btn:hover{transform:translateY(-1px);opacity:.94}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--fg)}.muted{color:var(--muted)}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(900px 460px at 50% -10%,rgba(109,92,245,.16),transparent 60%),var(--bg)}.card{width:100%;max-width:420px;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:32px}.card h1{font-size:24px;font-weight:800;letter-spacing:-.01em}.field{display:block;margin-top:16px}.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field input{width:100%;background:#0c0c12;border:1px solid var(--border);color:var(--fg);border-radius:10px;padding:12px 14px;font-size:15px;outline:none}.field input:focus{border-color:var(--accent)}.btn-block{width:100%;margin-top:22px;text-align:center}.err{margin-top:14px;color:#ff8080;font-size:14px;min-height:18px}.link{color:var(--accent)}.foot{margin-top:18px;font-size:14px;color:var(--muted);text-align:center}.wrap{max-width:760px;margin:0 auto;padding:56px 24px 80px}.eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--accent-2);font-weight:700}.topicbox{margin-top:22px;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.topicbox textarea{width:100%;min-height:64px;resize:vertical;background:#0c0c12;color:var(--fg);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:16px;outline:none;font-family:inherit}.topicbox textarea:focus{border-color:var(--accent)}.syl{margin-top:30px}.syl-mod{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;margin-top:14px}.syl-mod h3{font-size:18px;font-weight:700}.syl-aula{padding:8px 0;border-top:1px solid var(--border);font-size:15px}.syl-aula:first-of-type{border-top:none}.pill{display:inline-block;font-size:12px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:4px 12px;margin-right:8px}.viewer{min-height:100vh;display:flex;flex-direction:column}.viewer-top{padding:14px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px}.viewer-top .t{font-weight:700;font-size:15px}.progressbar{height:4px;background:var(--border)}.progressbar>div{height:100%;background:var(--accent);transition:width .25s ease}.stage{flex:1 1;display:flex;align-items:center;justify-content:center;padding:48px 24px;position:relative}.slide-card{max-width:780px;width:100%}.slide-card h2{font-size:clamp(26px,4.5vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.08}.slide-card ul{margin-top:24px;list-style:none}.slide-card li{font-size:clamp(16px,2.4vw,20px);margin:14px 0;padding-left:22px;position:relative}.slide-card li:before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--accent-2)}.notas{color:var(--muted);font-size:15px;border-top:1px solid var(--border);padding:16px 24px 0}.notas,.viewer-nav{max-width:780px;margin:0 auto;width:100%}.viewer-nav{padding:18px 24px 26px;display:flex;justify-content:space-between;align-items:center}.counter{color:var(--muted);font-size:14px}.navbtn{background:var(--bg-soft);border:1px solid var(--border);color:var(--fg);border-radius:999px;padding:10px 18px;cursor:pointer;font-size:14px}.navbtn:disabled{opacity:.4;cursor:default}