/* Nutef Academia — design system */
:root{
  --navy:#1e2958;        /* azul escuro Nutef */
  --navy-700:#28356e;
  --navy-50:#eef1fb;
  --blue:#2563eb;
  --blue-600:#1d4ed8;
  --blue-50:#eaf1ff;
  --accent:#00b8a9;      /* teal para destaques/sucesso */
  --amber:#f59e0b;
  --ink:#1f2430;
  --muted:#5b6472;
  --line:#e6e9f0;
  --bg:#f6f7fb;
  --card:#ffffff;
  --ok:#16a34a; --ok-bg:#e9f9ef;
  --err:#dc2626; --err-bg:#fdecec;
  --warn:#b45309; --warn-bg:#fff5e6;
  --radius:14px; --radius-sm:9px;
  --shadow:0 1px 2px rgba(20,30,70,.05), 0 8px 24px rgba(20,30,70,.07);
  --shadow-sm:0 1px 2px rgba(20,30,70,.06);
  --maxw:1140px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;
  --display:'Poppins',var(--font);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--display);line-height:1.2;color:var(--navy);margin:0 0 .5em}
h1{font-size:2rem;font-weight:700}
h2{font-size:1.5rem;font-weight:700}
h3{font-size:1.15rem;font-weight:600}
p{margin:0 0 1em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:760px}

/* Header */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:40;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.site-header .container{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;color:#fff;font-size:1.15rem}
.brand:hover{text-decoration:none}
.brand .logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--accent));display:grid;place-items:center;color:#fff;font-weight:800;font-family:var(--display)}
.brand small{display:block;font-size:.62rem;font-weight:500;letter-spacing:.14em;opacity:.7;text-transform:uppercase;margin-top:-2px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav a{color:#dfe4f5;padding:8px 12px;border-radius:8px;font-size:.94rem;font-weight:500}
.nav a:hover{background:rgba(255,255,255,.08);color:#fff;text-decoration:none}
.nav .btn{margin-left:6px}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer;margin-left:auto}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;font-family:var(--font);font-weight:600;font-size:.95rem;padding:11px 18px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:.15s;text-decoration:none;line-height:1}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-600);color:#fff}
.btn-accent{background:var(--accent);color:#04302c}
.btn-accent:hover{filter:brightness(1.05);color:#04302c}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-light{background:rgba(255,255,255,.14);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.24);color:#fff}
.btn-block{width:100%}
.btn-sm{padding:7px 12px;font-size:.85rem;border-radius:8px}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* Hero */
.hero{background:linear-gradient(150deg,var(--navy) 0%,#2a3a7d 55%,#324391 100%);color:#fff;padding:70px 0 84px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(0,184,169,.35),transparent 70%)}
.hero h1{color:#fff;font-size:2.6rem;max-width:14ch}
.hero p{font-size:1.18rem;color:#d7ddf3;max-width:52ch}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero .stats{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.hero .stats .n{font-family:var(--display);font-size:1.9rem;font-weight:700;color:#fff}
.hero .stats .l{font-size:.86rem;color:#c3cbe8}

/* Sections */
.section{padding:56px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.section-head p{color:var(--muted);margin:.2em 0 0}
.eyebrow{font-family:var(--display);font-weight:600;color:var(--blue);text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;margin-bottom:6px}

/* Category chips */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);color:var(--navy);padding:9px 15px;border-radius:999px;font-weight:500;font-size:.9rem}
.chip:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.chip.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.chip .ico{font-size:1.05rem}

/* Cards grid */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;transition:.18s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#d6ddf1}
.course-card .top{height:118px;background:linear-gradient(135deg,var(--navy),var(--blue));display:flex;align-items:flex-end;padding:14px;position:relative}
.course-card .top .cat{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.16);color:#fff;font-size:.72rem;font-weight:600;padding:4px 10px;border-radius:999px;backdrop-filter:blur(3px)}
.course-card .top .ico{font-size:2.6rem;filter:drop-shadow(0 2px 6px rgba(0,0,0,.25))}
.course-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.course-card h3{margin-bottom:6px;font-size:1.06rem}
.course-card .desc{color:var(--muted);font-size:.9rem;flex:1;margin-bottom:14px}
.meta-row{display:flex;gap:14px;color:var(--muted);font-size:.82rem;margin-bottom:14px;flex-wrap:wrap}
.meta-row span{display:inline-flex;align-items:center;gap:5px}
.badge{display:inline-block;font-size:.72rem;font-weight:600;padding:3px 9px;border-radius:999px;background:var(--navy-50);color:var(--navy)}
.badge.lvl{background:var(--blue-50);color:var(--blue-600)}

/* Course detail */
.course-hero{background:var(--navy);color:#fff;padding:44px 0}
.course-hero .cat{color:#a9b4dd;font-weight:600;font-size:.85rem;text-transform:uppercase;letter-spacing:.08em}
.course-hero h1{color:#fff;margin:8px 0}
.course-hero .sub{color:#d7ddf3;font-size:1.1rem;max-width:60ch}
.course-hero .facts{display:flex;gap:26px;margin-top:22px;flex-wrap:wrap}
.course-hero .facts .f .n{font-weight:700;font-family:var(--display);font-size:1.2rem}
.course-hero .facts .f .l{font-size:.8rem;color:#c3cbe8}
.layout-2{display:grid;grid-template-columns:1fr 340px;gap:34px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.panel + .panel{margin-top:22px}
.sticky{position:sticky;top:84px}
.obj-list{list-style:none;padding:0;margin:0}
.obj-list li{padding:8px 0 8px 30px;position:relative;border-bottom:1px solid var(--line)}
.obj-list li:last-child{border-bottom:0}
.obj-list li:before{content:"✓";position:absolute;left:0;top:8px;color:var(--accent);font-weight:800}

/* Syllabus accordion */
.modulo{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}
.modulo > summary{list-style:none;cursor:pointer;padding:14px 18px;background:var(--navy-50);display:flex;justify-content:space-between;align-items:center;font-weight:600;color:var(--navy)}
.modulo > summary::-webkit-details-marker{display:none}
.modulo .aulas{padding:6px 18px 14px}
.modulo .aulas .a{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);color:var(--muted);font-size:.92rem}
.modulo .aulas .a:last-child{border-bottom:0}

/* Forms */
.form-row{margin-bottom:16px}
.form-row label{display:block;font-weight:600;color:var(--navy);margin-bottom:6px;font-size:.92rem}
.input,select.input,textarea.input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font:inherit;color:var(--ink);background:#fff;transition:.15s}
.input:focus,textarea.input:focus,select.input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.15)}
textarea.input{resize:vertical;min-height:120px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9rem}
.hint{color:var(--muted);font-size:.84rem;margin-top:5px}
.auth-wrap{max-width:440px;margin:50px auto}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}

/* Alerts */
.alert{padding:13px 16px;border-radius:10px;margin-bottom:16px;font-size:.94rem;border:1px solid transparent}
.alert-ok{background:var(--ok-bg);color:#0f7a37;border-color:#bfe8cd}
.alert-erro{background:var(--err-bg);color:#a51f1f;border-color:#f4c4c4}
.alert-aviso{background:var(--warn-bg);color:var(--warn);border-color:#f6dca6}

/* Progress */
.progress{height:9px;background:var(--navy-50);border-radius:999px;overflow:hidden}
.progress > span{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--accent));border-radius:999px;transition:width .4s}
.progress-label{display:flex;justify-content:space-between;font-size:.82rem;color:var(--muted);margin-bottom:6px}

/* Course player layout */
.player{display:grid;grid-template-columns:300px 1fr;min-height:calc(100vh - 56px)}
.player-side{background:#fff;border-right:1px solid var(--line);padding:18px;overflow-y:auto;max-height:calc(100vh - 56px);position:sticky;top:56px}
.player-side h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.side-mod{margin-bottom:14px}
.side-mod .mt{font-weight:600;color:var(--navy);font-size:.92rem;margin:10px 0 6px}
.side-aula{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:8px;color:var(--muted);font-size:.9rem}
.side-aula:hover{background:var(--navy-50);text-decoration:none;color:var(--navy)}
.side-aula.current{background:var(--blue-50);color:var(--blue-600);font-weight:600}
.side-aula .mark{width:18px;height:18px;border-radius:50%;border:2px solid var(--line);flex:none;display:grid;place-items:center;font-size:.7rem}
.side-aula.done .mark{background:var(--accent);border-color:var(--accent);color:#fff}
.player-main{padding:34px 40px;max-width:820px}
.topbar{background:var(--navy);color:#fff;height:56px;display:flex;align-items:center;gap:14px;padding:0 18px;position:sticky;top:0;z-index:30}
.topbar a{color:#dfe4f5}
.topbar .tt{font-weight:600;font-family:var(--display);font-size:.98rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .prog{margin-left:auto;min-width:160px}

/* Lesson content */
.lesson h3{margin-top:1.6em;color:var(--navy)}
.lesson h4{margin-top:1.3em}
.lesson ul,.lesson ol{padding-left:1.3em}
.lesson li{margin:.3em 0}
.lesson blockquote{border-left:4px solid var(--accent);background:var(--navy-50);margin:1em 0;padding:.6em 1em;border-radius:0 8px 8px 0}
.lesson code{background:var(--navy-50);padding:2px 6px;border-radius:5px;font-size:.9em}
.keypoints{background:var(--blue-50);border:1px solid #cfe0ff;border-radius:var(--radius);padding:16px 18px;margin:22px 0}
.keypoints .h{font-weight:700;color:var(--blue-600);margin-bottom:8px;font-size:.9rem;text-transform:uppercase;letter-spacing:.05em}
.keypoints ul{margin:0;padding-left:1.1em}
.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line);flex-wrap:wrap}

/* Exam */
.q{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:16px}
.q .num{font-family:var(--display);font-weight:700;color:var(--blue)}
.q .en{font-weight:600;color:var(--navy);margin:4px 0 14px}
.opt{display:block;border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:9px;cursor:pointer;transition:.12s}
.opt:hover{border-color:var(--blue);background:var(--blue-50)}
.opt input{margin-right:9px}
.opt.correct{border-color:var(--ok);background:var(--ok-bg)}
.opt.wrong{border-color:var(--err);background:var(--err-bg)}
.q .exp{margin-top:12px;padding:12px 14px;background:var(--navy-50);border-radius:9px;font-size:.92rem;color:var(--ink)}
.q .exp b{color:var(--navy)}

/* Result */
.result-score{text-align:center;padding:34px;border-radius:var(--radius);color:#fff;margin-bottom:24px}
.result-score.pass{background:linear-gradient(135deg,#16a34a,#00b8a9)}
.result-score.fail{background:linear-gradient(135deg,#b91c1c,#dc2626)}
.result-score .big{font-family:var(--display);font-size:3.4rem;font-weight:700;line-height:1}
.result-score .lbl{opacity:.92}

/* Tables */
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:.92rem}
.table th{background:var(--navy-50);color:var(--navy);font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.03em}
.table tr:last-child td{border-bottom:0}
.table code{font-size:.85em;background:var(--navy-50);padding:2px 6px;border-radius:5px}
.pill{display:inline-block;font-size:.75rem;font-weight:600;padding:3px 9px;border-radius:999px}
.pill-ok{background:var(--ok-bg);color:#0f7a37}
.pill-off{background:#f0f1f4;color:var(--muted)}
.pill-warn{background:var(--warn-bg);color:var(--warn)}

/* Footer */
.site-footer{background:var(--navy);color:#c3cbe8;padding:40px 0;margin-top:60px;font-size:.9rem}
.site-footer a{color:#dfe4f5}
.site-footer .cols{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.site-footer .cnpj{font-size:.8rem;opacity:.7;margin-top:18px;border-top:1px solid rgba(255,255,255,.12);padding-top:18px}

/* Empty state */
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.empty .ico{font-size:3rem;margin-bottom:10px}

/* Dashboard stats */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-bottom:26px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm)}
.stat .n{font-family:var(--display);font-size:2rem;font-weight:700;color:var(--navy)}
.stat .l{color:var(--muted);font-size:.86rem}

/* Admin shell */
.admin-shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
.admin-side{background:var(--navy);color:#c9d1ee;padding:20px 14px}
.admin-side .brand{color:#fff;margin-bottom:22px;font-size:1.05rem}
.admin-side a{display:block;color:#c9d1ee;padding:10px 12px;border-radius:8px;font-size:.92rem;font-weight:500;margin-bottom:2px}
.admin-side a:hover,.admin-side a.active{background:rgba(255,255,255,.1);color:#fff;text-decoration:none}
.admin-main{padding:28px 34px;background:var(--bg)}
.admin-main .topline{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;flex-wrap:wrap;gap:10px}

.flex{display:flex}.between{justify-content:space-between}.center{align-items:center}.gap{gap:12px}.wrap{flex-wrap:wrap}
.mt{margin-top:16px}.mb{margin-bottom:16px}.muted{color:var(--muted)}.small{font-size:.86rem}
.tag{font-size:.72rem;background:var(--navy-50);color:var(--navy);padding:3px 8px;border-radius:6px;font-weight:600}

@media (max-width:920px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .layout-2{grid-template-columns:1fr}
  .player{grid-template-columns:1fr}
  .player-side{position:static;max-height:none;border-right:0;border-bottom:1px solid var(--line)}
  .admin-shell{grid-template-columns:1fr}
  .admin-side{display:flex;flex-wrap:wrap;gap:4px}
  .admin-side .brand{width:100%}
}
@media (max-width:680px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--navy);flex-direction:column;padding:12px;gap:2px}
  .nav.open{display:flex}
  .nav a{width:100%}
  .nav-toggle{display:block}
  .hero h1{font-size:2rem}
  .player-main{padding:22px}
  .admin-main{padding:18px}
}