/* ═══════════════════════════════════════════
   VOLTS ENGENHARIA — style.css
   Estética: industrial escuro + âmbar elétrico
═══════════════════════════════════════════ */

/* ── VARIÁVEIS ─────────────────────────────── */
:root {
  --amber:     #f59e0b;
  --amber-dim: #d97706;
  --amber-glow:#fbbf24;
  --bg:        #0d1117;
  --bg2:       #111827;
  --bg3:       #1f2937;
  --border:    rgba(245,158,11,0.15);
  --text:      #f9fafb;
  --text-dim:  #9ca3af;
  --text-muted:#6b7280;
  --radius:    8px;
  --transition:0.3s ease;
}

/* ── RESET ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Barlow', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── TIPOGRAFIA ────────────────────────────── */
h1, h2, h3 { font-family: 'Barlow Condensed', sans-serif; line-height: 1.1; }
h1 { font-size: clamp(2.8rem, 7vw, 5rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
em { font-style: normal; color: var(--amber); }

/* ── LAYOUT ────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
section { padding: 6rem 0; }

/* ── BOTÕES ────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--amber);
  color: #000;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-primary:hover {
  background: var(--amber-glow);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(245,158,11,0.35);
}
.btn-primary.full { width: 100%; justify-content: center; font-size: 1.05rem; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--text);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #25d366;
  color: #fff;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  transition: background var(--transition);
}
.btn-whatsapp:hover { background: #1da851; }

/* ── NAVBAR ────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 2rem;
  background: rgba(13,17,23,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
#navbar.scrolled { border-bottom-color: var(--border); }

.logo {
  display: flex;
  align-items: baseline;
  gap: 1px;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: -1px;
}
.logo-v    { color: var(--text); }
.logo-bolt { color: var(--amber); font-size: 1.4rem; }
.logo-lts  { color: var(--text); }
.logo-sub  {
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--text-muted);
  margin-left: 4px;
  align-self: center;
}

.nav-links {
  display: flex;
  gap: 2rem;
}
.nav-links a {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--amber); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── MOBILE MENU ───────────────────────────── */
.mobile-menu {
  position: fixed;
  top: 65px; left: 0; right: 0;
  z-index: 99;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transform: translateY(-110%);
  transition: transform 0.35s ease;
}
.mobile-menu.open { transform: translateY(0); }
.mob-link {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-dim);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.mob-link:hover { color: var(--amber); }

/* ── HERO ──────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,158,11,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,158,11,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(245,158,11,0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
}
.hero-badge {
  display: inline-block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--amber);
  border: 1px solid var(--border);
  background: rgba(245,158,11,0.08);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  margin-bottom: 1.5rem;
}
h1 { display: flex; flex-direction: column; gap: 0; margin-bottom: 1.5rem; }
.h1-line  { color: var(--text); }
.h1-accent  { color: var(--amber); }
.h1-accent2 { color: var(--amber-dim); }

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}
.hero-stats {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--amber);
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}
.stat-div {
  width: 1px; height: 40px;
  background: var(--border);
}

/* ── EYEBROW ───────────────────────────────── */
.eyebrow {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--amber);
  margin-bottom: 0.75rem;
}

/* ── SECTION HEADER ────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-header p {
  color: var(--text-dim);
  max-width: 500px;
  margin: 1rem auto 0;
}

/* ── SERVICES ──────────────────────────────── */
#servicos { background: var(--bg2); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
}
.service-card:hover {
  border-color: var(--amber);
  transform: translateY(-4px);
}
.service-card.featured {
  border-color: var(--amber);
  background: linear-gradient(135deg, var(--bg3) 0%, rgba(245,158,11,0.05) 100%);
}
.sc-badge {
  position: absolute;
  top: 1rem; right: 1rem;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: #000;
  background: var(--amber);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}
.sc-icon { font-size: 2rem; margin-bottom: 1rem; }
.service-card p { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 1.25rem; }
.sc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.sc-tags li {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
}

/* ── PROJECTS ──────────────────────────────── */
#projetos { background: var(--bg); }
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.proj-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.proj-card:hover { border-color: var(--amber); }
.proj-img {
  height: 200px;
  position: relative;
  overflow: hidden;
}
.proj-industrial {
  background: linear-gradient(135deg, #0a1628 0%, #1a2a45 50%, #0f1f35 100%);
  display: flex; align-items: center; justify-content: center;
}
.proj-industrial::before {
  content: '⚡';
  font-size: 5rem;
  opacity: 0.15;
}
.proj-solar {
  background: linear-gradient(135deg, #1a1000 0%, #3d2b00 50%, #2a1d00 100%);
  display: flex; align-items: center; justify-content: center;
}
.proj-solar::before {
  content: '☀️';
  font-size: 5rem;
  opacity: 0.2;
}
.proj-predial {
  background: linear-gradient(135deg, #0d1a0d 0%, #1a3a1a 50%, #0f2a0f 100%);
  display: flex; align-items: center; justify-content: center;
}
.proj-predial::before {
  content: '🏗️';
  font-size: 5rem;
  opacity: 0.15;
}
.proj-overlay {
  position: absolute;
  bottom: 1rem; left: 1rem;
}
.proj-tag {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  background: var(--amber);
  color: #000;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
}
.proj-body { padding: 1.5rem; background: var(--bg2); }
.proj-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.proj-body p { color: var(--text-dim); font-size: 0.9rem; }

/* ── SOLAR ─────────────────────────────────── */
#solar { background: var(--bg2); }
.solar-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 3.5rem;
}
.solar-content .eyebrow { margin-bottom: 1rem; }
.solar-content h2 { margin-bottom: 1rem; }
.solar-content p { color: var(--text-dim); margin-bottom: 1.5rem; }
.solar-list {
  list-style: none;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.solar-list li {
  color: var(--text-dim);
  font-size: 0.95rem;
}
.solar-visual { text-align: center; }
.solar-number { margin-bottom: 2rem; }
.sn-value {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 6rem;
  font-weight: 800;
  color: var(--amber);
  line-height: 1;
}
.sn-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  display: block;
}
.solar-years {
  display: flex;
  gap: 2rem;
  justify-content: center;
}
.sy-item { text-align: center; }
.sy-num {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--amber-dim);
}
.sy-text { font-size: 0.8rem; color: var(--text-muted); }

/* ── POR QUE NÓS ───────────────────────────── */
#porquenos { background: var(--bg); }
.reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.reason {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color var(--transition);
}
.reason:hover { border-color: var(--amber); }
.reason-icon { font-size: 2rem; margin-bottom: 1rem; display: block; }
.reason h3 { margin-bottom: 0.5rem; }
.reason p { color: var(--text-dim); font-size: 0.9rem; }

/* ── CONTACT ───────────────────────────────── */
#contato { background: var(--bg2); }
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.contact-info h2 { margin-bottom: 1rem; }
.contact-info p { color: var(--text-dim); margin-bottom: 2rem; }
.contact-links { display: flex; flex-direction: column; gap: 1rem; }
.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.contact-link:hover { border-color: var(--amber); }
.whatsapp-link { border-color: rgba(37,211,102,0.3); }
.whatsapp-link:hover { border-color: #25d366; }
.cl-icon { font-size: 1.5rem; flex-shrink: 0; }
.cl-label { display: block; font-size: 0.75rem; color: var(--text-muted); margin-bottom: 2px; }
.cl-value { display: block; font-weight: 600; font-size: 0.95rem; }

/* ── FORM ──────────────────────────────────── */
.contact-form {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: 'Barlow', sans-serif;
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--amber); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: var(--bg2); }
.field-error { color: #ef4444; font-size: 0.78rem; margin-top: 2px; display: block; }
.field--error { border-color: #ef4444 !important; }
#formSuccess { padding: 0.75rem; border-radius: var(--radius); background: rgba(245,158,11,0.1); text-align: center; font-size: 0.9rem; }

/* ── FOOTER ────────────────────────────────── */
footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 1px;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
}
.footer-copy { color: var(--text-muted); font-size: 0.85rem; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--amber); }

/* ── WHATSAPP FLOAT ─────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 99;
  width: 56px; height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: transform var(--transition), box-shadow var(--transition);
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37,211,102,0.5);
}

/* ── REVEAL ANIMATIONS ──────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ── RESPONSIVE ─────────────────────────────── */
@media (max-width: 768px) {
  section { padding: 4rem 0; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  h1 { font-size: 2.8rem; }
  .hero-stats { gap: 1rem; }
  .solar-box { grid-template-columns: 1fr; gap: 2rem; padding: 2rem; }
  .contact-wrapper { grid-template-columns: 1fr; gap: 2rem; }
  .footer-inner { flex-direction: column; text-align: center; }
  .services-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .reasons-grid { grid-template-columns: 1fr; }
  .sn-value { font-size: 4rem; }
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
  * { transition-duration: 0.01ms !important; }
}