/* L4Tec — estilos do site institucional (mobile-first, sem build) */
@font-face{font-family:"Inter";src:url("../fonts/inter-latin-var.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
:root{
  --bg:#0a0f1e;--bg-2:#0d1428;--surface:rgba(255,255,255,.035);--surface-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);--text:#e8ecf3;--text-2:#b9c3d3;--muted:#8f9bb0;
  --brand:#22d3ee;--brand-2:#4176b0;--brand-3:#60a5fa;--ok:#34d399;--err:#f87171;--warn:#fbbf24;
  --radius:16px;--maxw:1160px;--grad:linear-gradient(135deg,var(--brand) 0%,var(--brand-3) 55%,var(--brand-2) 100%);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.6;color:var(--text);background:var(--bg);background-image:radial-gradient(1200px 600px at 85% -10%,rgba(34,211,238,.10),transparent 60%),radial-gradient(900px 500px at -10% 20%,rgba(65,118,176,.14),transparent 60%)}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-underline-offset:3px}
a:hover{color:#67e8f9}
:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:6px}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,6vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.6rem,4vw,2.3rem);font-weight:750}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px;top:8px;background:var(--brand);color:#05101c;padding:10px 14px;border-radius:10px;font-weight:700;z-index:100}
.skip:focus{left:8px}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);margin-bottom:.8rem}
.lead{font-size:1.1rem;color:var(--text-2);max-width:62ch}
.muted{color:var(--muted)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(10,15,30,.78);backdrop-filter:saturate(160%) blur(10px);-webkit-backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:800;letter-spacing:.02em}
.brand img{width:34px;height:34px}
.brand small{display:block;font-weight:500;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer}
.nav-toggle svg{width:22px;height:22px}
.nav-menu{position:absolute;left:0;right:0;top:64px;background:var(--bg-2);border-bottom:1px solid var(--line);display:none;padding:8px 20px 20px}
.nav-menu.open{display:block}
.nav-menu ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.nav-menu a{display:block;padding:12px 4px;color:var(--text-2);text-decoration:none;font-weight:600}
.nav-menu a:hover{color:var(--text)}
.nav-menu .btn{margin-top:10px;width:100%;justify-content:center}
@media (min-width:900px){
  .nav-toggle{display:none}
  .nav-menu{position:static;display:flex!important;align-items:center;gap:22px;background:none;border:0;padding:0}
  .nav-menu ul{display:flex;gap:22px}
  .nav-menu a{padding:6px 0;font-size:.95rem}
  .nav-menu .btn{margin:0;width:auto}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;min-height:46px;padding:12px 20px;border-radius:12px;font-weight:700;font-size:.98rem;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .15s,opacity .15s,background .15s;font-family:inherit}
.btn-primary{background:var(--grad);color:#04121f}
.btn-primary:hover{color:#04121f;opacity:.92;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{background:var(--surface-2);color:var(--text)}
.btn[disabled]{opacity:.6;cursor:progress}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:1.4rem}

/* Sections */
.section{padding:72px 0;border-top:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:36px}
.grid{display:grid;gap:18px}
@media (min-width:640px){.g2{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:960px){.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:background .2s,border-color .2s}
.card:hover{background:var(--surface-2);border-color:rgba(34,211,238,.28)}
.card p{color:var(--text-2);margin:0}
.icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(34,211,238,.10);border:1px solid rgba(34,211,238,.25);margin-bottom:14px;color:var(--brand)}
.icon svg{width:22px;height:22px}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px;padding:0;list-style:none}
.tags li{font-size:.75rem;padding:4px 9px;border-radius:999px;border:1px solid rgba(34,211,238,.28);background:rgba(34,211,238,.07);color:#a5f3fc}

/* Hero */
.hero{padding:56px 0 64px}
.hero-grid{display:grid;gap:36px;align-items:center}
@media (min-width:960px){.hero{padding:88px 0 96px}.hero-grid{grid-template-columns:1.15fr .85fr}}
.hero-media{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 80px -30px rgba(34,211,238,.25)}
.hero-media img{width:100%;aspect-ratio:1/1;object-fit:cover}
.hero-media figcaption{position:absolute;left:12px;right:12px;bottom:12px;background:rgba(10,15,30,.82);border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-size:.85rem;color:var(--text-2)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:1.4rem 0 0;padding:0;list-style:none}
.chips li{font-size:.8rem;padding:6px 11px;border:1px solid rgba(255,255,255,.14);border-radius:999px;color:var(--text-2)}

/* Proof strip */
.proof{display:grid;gap:12px;margin-top:40px}
@media (min-width:640px){.proof{grid-template-columns:repeat(2,1fr)}}
@media (min-width:960px){.proof{grid-template-columns:repeat(4,1fr)}}
.proof div{border-left:3px solid var(--brand);padding:4px 0 4px 14px}
.proof strong{display:block;font-size:1.02rem}
.proof span{color:var(--muted);font-size:.88rem}

/* Steps */
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding-left:58px}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:0;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-weight:800;color:#04121f;background:var(--grad)}

/* Projects */
.project{display:flex;flex-direction:column}
.project .kicker{font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.project .more{margin-top:auto;padding-top:14px;font-weight:600;font-size:.92rem}
.project.featured{border-color:rgba(34,211,238,.35);background:linear-gradient(180deg,rgba(34,211,238,.07),rgba(255,255,255,.02))}
.badge-new{display:inline-block;font-size:.7rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#04121f;background:var(--grad);border-radius:999px;padding:3px 9px;margin-left:6px;vertical-align:middle}

/* Cursos */
.courses{display:grid;gap:24px;align-items:center;background:linear-gradient(135deg,rgba(34,211,238,.10),rgba(65,118,176,.12));border:1px solid rgba(34,211,238,.25);border-radius:24px;padding:28px}
@media (min-width:960px){.courses{grid-template-columns:1.2fr .8fr;padding:44px}}
.checklist{list-style:none;padding:0;margin:0 0 1rem;display:grid;gap:10px}
.checklist li{position:relative;padding-left:28px;color:var(--text-2)}
.checklist li::before{content:"✓";position:absolute;left:0;top:0;font-weight:800;color:var(--brand)}
.pipeline{display:grid;gap:8px;font-size:.9rem}
.pipeline div{display:flex;align-items:center;gap:10px;background:rgba(10,15,30,.55);border:1px solid var(--line);border-radius:12px;padding:10px 14px}
.pipeline b{color:var(--brand);font-variant-numeric:tabular-nums}

/* Sobre */
.about>*{max-width:820px}
.facts{list-style:none;padding:0;margin:1.2rem 0;display:grid;gap:10px}
.facts li{padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text-2)}
.facts strong{color:var(--text)}
.links-inline{display:flex;flex-wrap:wrap;gap:10px 18px;font-weight:600}

/* Contato */
.contact{display:grid;gap:22px}
@media (min-width:960px){.contact{grid-template-columns:1.25fr .75fr}}
form{display:grid;gap:14px}
.field label{display:block;font-size:.88rem;font-weight:600;color:var(--text-2);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;font:inherit;color:var(--text);background:#081022;border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:12px 14px;min-height:48px}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,211,238,.18)}
.hp{position:absolute!important;left:-10000px;width:1px;height:1px;overflow:hidden}
.form-note{font-size:.82rem;color:var(--muted);margin:0}
.status{min-height:1.4em;font-size:.95rem;margin:0}
.status.ok{color:var(--ok)}.status.err{color:var(--err)}
.channels{display:grid;gap:12px}
.channel{display:flex;gap:14px;align-items:center;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);text-decoration:none;color:var(--text)}
.channel:hover{background:var(--surface-2);color:var(--text)}
.channel span{display:block;font-size:.85rem;color:var(--muted)}
.channel .icon{margin:0;flex:none}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:36px 0 44px;color:var(--muted);font-size:.9rem}
.footer-grid{display:grid;gap:18px}
@media (min-width:760px){.footer-grid{grid-template-columns:1fr auto;align-items:center}}
.site-footer nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 18px}
.site-footer a{color:var(--text-2);text-decoration:none}
.site-footer a:hover{color:var(--text)}

/* Páginas simples (404, privacidade) */
.page{padding:72px 0;min-height:60vh}
.page .prose{max-width:760px}
.page .prose h2{font-size:1.3rem;margin-top:1.6em}
.page .prose p,.page .prose li{color:var(--text-2)}
.center{text-align:center}
.big404{font-size:clamp(4rem,18vw,9rem);font-weight:900;line-height:1;margin:0}

/* utilitários */
.mt-xl{margin-top:56px}.mt-md{margin-top:22px}.h3-lg{font-size:1.4rem}.m0{margin:0 0 4px}.channel.static{cursor:default}
.mx-auto{margin-left:auto;margin-right:auto}.jc{justify-content:center}
.nav-menu a.btn{color:#04121f;padding:12px 20px;white-space:nowrap}
.nav-menu a.btn:hover{color:#04121f}
@media (min-width:900px){.nav-menu a.btn{padding:10px 16px;min-height:42px}}

/* Cursos (v2) */
.courses-intro{display:grid;gap:24px;margin-bottom:32px;align-items:start}
@media (min-width:960px){.courses-intro{grid-template-columns:1.15fr .85fr;gap:40px}}
.disclosure{background:linear-gradient(135deg,rgba(34,211,238,.08),rgba(65,118,176,.10));border:1px solid rgba(34,211,238,.25);border-radius:var(--radius);padding:22px}
.disclosure h3{font-size:1.05rem;margin-bottom:12px}
.disclosure dl{margin:0;display:grid;gap:4px}
.disclosure dt{font-weight:700;font-size:.9rem;color:var(--text);margin-top:8px}
.disclosure dt:first-child{margin-top:0}
.disclosure dd{margin:0;color:var(--text-2);font-size:.93rem;overflow-wrap:anywhere}
.areas{margin-bottom:28px}
.area-title{font-size:.8rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--brand);margin:0 0 12px}
.course{display:flex;flex-direction:column;height:calc(100% - 32px)}
.course h4{font-size:1.25rem;margin:0 0 10px;line-height:1.2}
.course-meta{list-style:none;padding:0;margin:16px 0 12px;display:flex;flex-wrap:wrap;gap:8px}
.course-meta li{font-size:.8rem;font-weight:600;padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--text)}
.course .course-aud{font-size:.9rem;margin-bottom:16px}
.course-link{margin-top:auto;align-self:flex-start}
.project .owner{margin-top:12px;font-size:.8rem;color:var(--muted);border-top:1px solid var(--line);padding-top:10px}

/* Projetos: 5 cards equilibrados (3 + 2 no desktop) */
.projects-5{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:640px){.projects-5{grid-template-columns:repeat(2,minmax(0,1fr))}.projects-5>:last-child{grid-column:1/-1}}
@media (min-width:960px){.projects-5{grid-template-columns:repeat(6,minmax(0,1fr))}.projects-5>*{grid-column:span 2}.projects-5>:nth-child(n+4){grid-column:span 3}}

/* Cursos por área (v3) */
.areas{display:grid;gap:28px;margin-bottom:28px}
.area-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:16px}
.area-head .area-title{margin:0;font-size:1.15rem;letter-spacing:-.01em;text-transform:none;color:var(--text)}
.area-count{font-size:.85rem;color:var(--muted)}
.areas .course{height:100%}
.course-tag{align-self:flex-start;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#a5f3fc;background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.28);border-radius:999px;padding:3px 9px;margin-bottom:10px}
.areas-note{margin:0}