/* assets/css/style.css — CSS nativo, sem libs */
*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f172a;--card:#1e293b;--accent:#38bdf8;--accent2:#818cf8;--text:#e2e8f0;--muted:#94a3b8;--danger:#f87171;--success:#34d399;--border:#334155}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,sans-serif;background:linear-gradient(135deg,var(--bg),#1e1b4b);color:var(--text);min-height:100vh}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.header{display:flex;justify-content:space-between;align-items:center;padding:20px 0}
.logo{font-weight:800;font-size:1.4rem;letter-spacing:.5px}
.logo span{color:var(--accent)}
.nav a{margin-left:16px;color:var(--muted)}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;padding:50px 0}
.hero h1{font-size:2.6rem;line-height:1.1;margin-bottom:14px}
.hero h1 em{color:var(--accent);font-style:normal}
.hero p{color:var(--muted);line-height:1.6;margin-bottom:18px}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}
.badge{background:rgba(56,189,248,.1);border:1px solid var(--border);padding:6px 10px;border-radius:999px;font-size:.8rem;color:var(--muted)}
.card{background:rgba(30,41,59,.9);border:1px solid var(--border);border-radius:16px;padding:24px;backdrop-filter:blur(8px);box-shadow:0 10px 30px rgba(0,0,0,.3)}
.login-card h2{margin-bottom:6px}
.login-card .sub{color:var(--muted);font-size:.9rem;margin-bottom:18px}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:6px}
.form-group input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:#0f172a;color:var(--text);outline:none}
.form-group input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(56,189,248,.2)}
.btn{width:100%;padding:12px 16px;border-radius:10px;border:none;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#0f172a;font-weight:700;cursor:pointer;transition:opacity .2s}
.btn:hover{opacity:.9}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.alert{padding:10px 14px;border-radius:10px;margin-bottom:14px;font-size:.9rem}
.alert-error{background:rgba(248,113,113,.15);border:1px solid rgba(248,113,113,.4);color:#fecaca}
.alert-success{background:rgba(52,211,153,.15);border:1px solid rgba(52,211,153,.4);color:#a7f3d0}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0 50px}
.feature{background:rgba(30,41,59,.6);border:1px solid var(--border);border-radius:14px;padding:20px}
.feature h3{font-size:1rem;margin-bottom:6px}
.feature p{font-size:.9rem;color:var(--muted);line-height:1.5}
.footer{text-align:center;padding:30px 0;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border);margin-top:20px}
/* painel */
.layout{display:flex;min-height:100vh}
.sidebar{width:240px;background:rgba(15,23,42,.9);border-right:1px solid var(--border);padding:20px}
.sidebar h3{font-size:.75rem;letter-spacing:1px;color:var(--muted);text-transform:uppercase;margin:18px 0 10px}
.sidebar a{display:block;padding:10px 12px;border-radius:10px;color:var(--muted);margin-bottom:4px}
.sidebar a.active,.sidebar a:hover{background:rgba(56,189,248,.12);color:var(--text)}
.main{flex:1;padding:30px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.module-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.module-card h4{margin-bottom:6px}
.module-card p{font-size:.85rem;color:var(--muted)}
.empty{padding:40px;text-align:center;color:var(--muted);border:1px dashed var(--border);border-radius:14px}
@media(max-width:860px){.hero{grid-template-columns:1fr}.features{grid-template-columns:1fr}.layout{flex-direction:column}.sidebar{width:100%}}