/* =====================================================
   BASE CSS — Escola do Eletricista — Todos os módulos
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@400;600;700&display=swap');

:root {
  --bg:       #0a0c0f;
  --surface:  #111318;
  --surface2: #161a22;
  --border:   #1e2228;
  --border2:  #2a2f3a;
  --yellow:   #f5c400;
  --yellow2:  #ffd740;
  --orange:   #ff6b1a;
  --blue:     #3b82f6;
  --green:    #22c55e;
  --red:      #ef4444;
  --muted:    #6b7280;
  --text:     #e8eaf0;
  --text2:    #9ca3af;
  --text3:    #6b7280;
  --radius:   12px;
  --font-display: 'Bebas Neue', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --max-w:    820px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(245,196,0,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,196,0,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none; z-index: 0;
}

/* NAV */
.mod-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,12,15,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 58px; gap: 16px;
}
.nav-left { display: flex; align-items: center; gap: 12px; }
.nav-logo-icon { width:30px;height:30px;background:var(--yellow);border-radius:7px;display:grid;place-items:center;font-size:15px;flex-shrink:0; }
.nav-logo-text { font-family:var(--font-display);font-size:16px;letter-spacing:1px;color:var(--text); }
.nav-logo-text span { color:var(--yellow); }
.nav-sep { color:var(--border2); font-size:20px; }
.nav-mod-label { font-family:var(--font-mono);font-size:11px;color:var(--yellow);letter-spacing:2px; }
.nav-right { display:flex;align-items:center;gap:10px; }
.nav-btn {
  display:flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:8px;
  font-size:13px;font-weight:600;
  text-decoration:none;border:none;cursor:pointer;
  transition:all .2s;
}
.nav-btn-ghost { background:transparent;color:var(--text2);border:1px solid var(--border2); }
.nav-btn-ghost:hover { color:var(--yellow);border-color:rgba(245,196,0,.35); }
.nav-btn-yellow { background:var(--yellow);color:#000; }
.nav-btn-yellow:hover { background:var(--yellow2);transform:translateY(-1px); }

/* HERO MÓDULO */
.mod-hero {
  position:relative;z-index:1;
  max-width:var(--max-w);margin:0 auto;
  padding:56px 24px 40px;
}
.mod-eyebrow {
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(245,196,0,.09);border:1px solid rgba(245,196,0,.2);
  color:var(--yellow);font-family:var(--font-mono);
  font-size:10px;letter-spacing:2.5px;text-transform:uppercase;
  padding:5px 13px;border-radius:100px;margin-bottom:20px;
}
.mod-eyebrow-dot { width:5px;height:5px;background:var(--yellow);border-radius:50%;animation:blink 1.5s infinite; }
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.mod-hero h1 {
  font-family:var(--font-display);
  font-size:clamp(38px,6vw,68px);
  line-height:.95;letter-spacing:2px;margin-bottom:20px;
}
.mod-hero h1 em { color:var(--yellow);font-style:normal; }
.mod-hero-sub { font-size:16px;color:var(--text2);max-width:600px;margin-bottom:32px;line-height:1.7; }
.mod-meta-row {
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:0;
}
.mod-meta-chip {
  display:flex;align-items:center;gap:6px;
  background:var(--surface);border:1px solid var(--border2);
  color:var(--text2);font-size:12px;padding:5px 12px;border-radius:100px;
}
.mod-meta-chip span { color:var(--yellow); }

/* PROGRESS BAR TOP */
.mod-reading-bar {
  position:fixed;top:58px;left:0;right:0;height:2px;z-index:99;
  background:transparent;
}
.mod-reading-fill {
  height:100%;background:linear-gradient(90deg,var(--yellow),var(--orange));
  width:0%;transition:width .1s linear;
}

/* LAYOUT PRINCIPAL */
.mod-layout {
  max-width:var(--max-w);margin:0 auto;padding:0 24px 100px;
  position:relative;z-index:1;
}

/* DIVISOR */
.mod-divider {
  height:1px;background:linear-gradient(90deg,var(--yellow),transparent);
  opacity:.25;margin:48px 0;
}

/* SEÇÕES */
.mod-section { margin-bottom:56px; }
.mod-section-tag {
  font-family:var(--font-mono);font-size:10px;letter-spacing:2px;
  text-transform:uppercase;color:var(--yellow);margin-bottom:10px;
}
.mod-section h2 {
  font-family:var(--font-display);font-size:clamp(24px,4vw,36px);
  letter-spacing:1px;margin-bottom:16px;line-height:1.1;
}
.mod-section h3 {
  font-size:18px;font-weight:700;color:var(--text);
  margin:28px 0 12px;border-left:3px solid var(--yellow);padding-left:12px;
}
.mod-section p { color:var(--text2);margin-bottom:14px;font-size:15px;line-height:1.8; }
.mod-section p strong { color:var(--text);font-weight:600; }

/* IMAGE BLOCK */
.mod-img-block {
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border2);margin:24px 0;
  position:relative;
}
.mod-img-block img {
  width:100%;height:auto;display:block;
  object-fit:cover;max-height:360px;
  filter:brightness(.92) saturate(1.05);
  transition:filter .3s;
}
.mod-img-block:hover img { filter:brightness(1) saturate(1.1); }
.mod-img-caption {
  padding:10px 14px;
  background:var(--surface2);border-top:1px solid var(--border);
  font-size:12px;color:var(--text3);font-family:var(--font-mono);
  display:flex;align-items:center;gap:6px;
}
.mod-img-caption::before { content:'📷';font-family:sans-serif; }

/* IMAGE GRID */
.mod-img-grid {
  display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0;
}
.mod-img-grid .mod-img-block { margin:0; }
@media(max-width:500px){ .mod-img-grid{grid-template-columns:1fr;} }

/* CALLOUT */
.callout {
  border-radius:var(--radius);padding:18px 20px;margin:24px 0;
  border-left:4px solid;
  font-size:14px;line-height:1.7;
}
.callout-title { font-weight:700;margin-bottom:6px;font-size:13px;letter-spacing:.5px;text-transform:uppercase; }
.callout-warn  { background:rgba(245,196,0,.07);border-color:var(--yellow);color:#e2cfa0; }
.callout-warn  .callout-title { color:var(--yellow); }
.callout-info  { background:rgba(59,130,246,.07);border-color:var(--blue);color:#a3bede; }
.callout-info  .callout-title { color:#93c5fd; }
.callout-danger{ background:rgba(239,68,68,.07);border-color:var(--red);color:#f3a3a3; }
.callout-danger .callout-title { color:#fca5a5; }
.callout-green { background:rgba(34,197,94,.07);border-color:var(--green);color:#a7e3bc; }
.callout-green .callout-title { color:#86efac; }

/* TABELA */
.mod-table-wrap { overflow-x:auto;margin:24px 0;border-radius:var(--radius);border:1px solid var(--border2); }
.mod-table { width:100%;border-collapse:collapse;font-size:13px; }
.mod-table thead tr { background:rgba(245,196,0,.08); }
.mod-table th {
  padding:12px 16px;text-align:left;font-weight:700;
  color:var(--yellow);font-family:var(--font-mono);font-size:11px;
  letter-spacing:1.5px;text-transform:uppercase;
  border-bottom:1px solid var(--border2);
}
.mod-table td {
  padding:11px 16px;color:var(--text2);
  border-bottom:1px solid var(--border);vertical-align:top;
}
.mod-table tbody tr:last-child td { border-bottom:none; }
.mod-table tbody tr:hover td { background:rgba(255,255,255,.02); }
.mod-table td strong { color:var(--text); }

/* FÓRMULA */
.formula-block {
  background:var(--surface2);border:1px solid rgba(245,196,0,.2);
  border-radius:var(--radius);padding:20px 24px;margin:20px 0;
  text-align:center;
}
.formula-main {
  font-family:var(--font-mono);font-size:clamp(20px,4vw,32px);
  font-weight:700;color:var(--yellow);letter-spacing:2px;
  margin-bottom:8px;
}
.formula-vars {
  font-family:var(--font-mono);font-size:12px;color:var(--text3);
  display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-top:8px;
}
.formula-vars span { color:var(--text2); }

/* LISTA TÉCNICA */
.tech-list { list-style:none;margin:16px 0; }
.tech-list li {
  display:flex;align-items:flex-start;gap:10px;
  padding:8px 0;border-bottom:1px solid var(--border);
  font-size:14px;color:var(--text2);
}
.tech-list li:last-child { border-bottom:none; }
.tech-list-icon { flex-shrink:0;width:22px;text-align:center;margin-top:1px; }

/* PASSOS */
.steps { list-style:none;counter-reset:step-counter;margin:16px 0; }
.steps li {
  counter-increment:step-counter;
  display:flex;gap:16px;padding:14px 0;
  border-bottom:1px solid var(--border);
}
.steps li:last-child { border-bottom:none; }
.step-num {
  width:32px;height:32px;flex-shrink:0;border-radius:8px;
  background:rgba(245,196,0,.1);border:1px solid rgba(245,196,0,.25);
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--yellow);
}
.step-body { flex:1; }
.step-title { font-weight:700;color:var(--text);margin-bottom:4px;font-size:15px; }
.step-desc { font-size:14px;color:var(--text2);line-height:1.6; }

/* CARDS GRID */
.cards-grid {
  display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:14px;margin:20px 0;
}
.info-card {
  background:var(--surface);border:1px solid var(--border2);
  border-radius:var(--radius);padding:18px;transition:all .2s;
}
.info-card:hover { border-color:rgba(245,196,0,.25);transform:translateY(-2px); }
.info-card-icon { font-size:28px;margin-bottom:10px; }
.info-card-title { font-weight:700;color:var(--text);font-size:14px;margin-bottom:6px; }
.info-card-desc { font-size:13px;color:var(--text2);line-height:1.6; }

/* QUIZ PROMO */
.quiz-promo {
  background:linear-gradient(135deg,rgba(245,196,0,.06),rgba(255,107,26,.06));
  border:1px solid rgba(245,196,0,.2);border-radius:var(--radius);
  padding:28px 24px;margin:48px 0 0;text-align:center;
}
.quiz-promo-icon { font-size:40px;margin-bottom:12px; }
.quiz-promo h3 { font-family:var(--font-display);font-size:28px;margin-bottom:8px;letter-spacing:1px; }
.quiz-promo p { font-size:14px;color:var(--text2);margin-bottom:20px; }
.quiz-promo-btns { display:flex;gap:10px;justify-content:center;flex-wrap:wrap; }

/* NAVEGAÇÃO ENTRE MÓDULOS */
.mod-nav-btns {
  display:grid;grid-template-columns:1fr 1fr;gap:12px;
  margin-top:56px;padding-top:32px;border-top:1px solid var(--border);
}
.mod-nav-card {
  background:var(--surface);border:1px solid var(--border2);
  border-radius:var(--radius);padding:16px 20px;
  text-decoration:none;transition:all .2s;
  display:flex;flex-direction:column;gap:4px;
}
.mod-nav-card:hover { border-color:rgba(245,196,0,.3);transform:translateY(-2px); }
.mod-nav-card.prev { align-items:flex-start; }
.mod-nav-card.next { align-items:flex-end;text-align:right; }
.mod-nav-dir { font-family:var(--font-mono);font-size:10px;letter-spacing:2px;color:var(--muted);text-transform:uppercase; }
.mod-nav-title { font-weight:700;color:var(--text);font-size:14px; }

/* FOOTER */
.mod-footer {
  border-top:1px solid var(--border);padding:24px;
  text-align:center;font-size:12px;color:var(--text3);
  font-family:var(--font-mono);
}

/* TOC (índice do módulo) */
.mod-toc {
  background:var(--surface);border:1px solid var(--border2);
  border-radius:var(--radius);padding:20px 24px;margin-bottom:40px;
}
.mod-toc-title {
  font-family:var(--font-mono);font-size:10px;letter-spacing:2px;
  text-transform:uppercase;color:var(--yellow);margin-bottom:12px;
}
.mod-toc ul { list-style:none; }
.mod-toc li { padding:5px 0;border-bottom:1px solid var(--border); }
.mod-toc li:last-child { border-bottom:none; }
.mod-toc a { color:var(--text2);text-decoration:none;font-size:14px;transition:color .2s;display:flex;align-items:center;gap:8px; }
.mod-toc a::before { content:'→';font-family:var(--font-mono);font-size:11px;color:var(--yellow); }
.mod-toc a:hover { color:var(--yellow); }

/* HIGHLIGHT BOX */
.highlight-box {
  background:var(--surface2);border-radius:var(--radius);
  padding:20px 22px;margin:20px 0;
  border:1px solid var(--border2);
}
.highlight-box h4 { font-weight:700;color:var(--text);margin-bottom:8px;font-size:15px; }

/* RESPONSIVE */
@media(max-width:640px){
  .mod-nav { padding:0 16px; }
  .mod-hero,.mod-layout { padding-left:16px;padding-right:16px; }
  .mod-nav-btns { grid-template-columns:1fr; }
  .cards-grid { grid-template-columns:1fr 1fr; }
}
@media(max-width:400px){
  .cards-grid { grid-template-columns:1fr; }
}

/* SCROLL REVEAL */
.reveal { opacity:0;transform:translateY(22px);transition:opacity .55s ease,transform .55s ease; }
.reveal.visible { opacity:1;transform:none; }

/* TAG pill */
.tag {
  display:inline-flex;align-items:center;gap:4px;
  padding:2px 9px;border-radius:100px;font-size:11px;font-weight:600;
}
.tag-yellow { background:rgba(245,196,0,.12);color:var(--yellow);border:1px solid rgba(245,196,0,.2); }
.tag-green  { background:rgba(34,197,94,.12);color:var(--green);border:1px solid rgba(34,197,94,.2); }
.tag-blue   { background:rgba(59,130,246,.12);color:#93c5fd;border:1px solid rgba(59,130,246,.2); }
.tag-red    { background:rgba(239,68,68,.12);color:#fca5a5;border:1px solid rgba(239,68,68,.2); }
.tag-orange { background:rgba(255,107,26,.12);color:#fda97d;border:1px solid rgba(255,107,26,.2); }