/* ============================================================
   VL Maintenance — style.css
   Design System: Dark Industrial + Electric Blue
   ============================================================ */

/* ---- Google Fonts & CSS Variables ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg-900: #080c14;
  --bg-800: #0d1220;
  --bg-700: #111827;
  --bg-600: #1a2233;
  --bg-card: #131b2b;
  --bg-card-hover: #1a2540;

  --blue-400: #38bdf8;
  --blue-500: #00d4ff;
  --blue-600: #0096b3;
  --blue-glow: rgba(0, 212, 255, 0.15);
  --blue-glow-strong: rgba(0, 212, 255, 0.3);

  --accent-orange: #f97316;
  --accent-green: #22d3a0;
  --accent-purple: #a78bfa;

  --text-primary: #f0f6ff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border: rgba(255,255,255,0.07);
  --border-blue: rgba(0, 212, 255, 0.2);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-blue: 0 0 40px rgba(0, 212, 255, 0.12);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --font-body: 'Inter', sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-900);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ============================================================
   UTILITIES
   ============================================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.gradient-text {
  background: linear-gradient(135deg, var(--blue-500) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue-500);
  background: var(--blue-glow);
  border: 1px solid var(--border-blue);
  border-radius: 100px;
  padding: 5px 14px;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .section-desc { margin: 0 auto; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  color: var(--bg-900);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(0, 212, 255, 0.55);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--bg-600);
  border-color: var(--border-blue);
  transform: translateY(-2px);
}

.btn-nav {
  background: var(--blue-glow);
  border: 1px solid var(--border-blue);
  color: var(--blue-500);
  padding: 10px 22px;
  font-size: 0.88rem;
}
.btn-nav:hover {
  background: rgba(0, 212, 255, 0.25);
}

.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(8, 12, 20, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  flex-shrink: 0;
}
.logo-vl {
  color: var(--blue-500);
  font-size: 1.5rem;
}
.logo-maintenance { color: var(--text-primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-left: auto;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--blue-500);
  transform: scaleX(0);
  transition: transform 0.3s;
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { transform: scaleX(1); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('hero_bg.jpg');
  background-size: cover;
  background-position: center;
  filter: saturate(0.7) brightness(0.35);
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.05); }
  to   { transform: scale(1.12); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(8, 12, 20, 0.85) 0%,
    rgba(8, 12, 20, 0.5) 50%,
    rgba(0, 40, 60, 0.7) 100%
  );
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--blue-500);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0%   { opacity: 0; transform: translateY(0) scale(1); }
  10%  { opacity: 0.8; }
  90%  { opacity: 0.3; }
  100% { opacity: 0; transform: translateY(-80vh) scale(0.3); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--blue-400);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border-blue);
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 40px;
  backdrop-filter: blur(12px);
  flex-wrap: wrap;
}

.stat-item {
  padding: 0 40px;
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--blue-500);
  line-height: 1;
}
.stat-suffix {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--blue-500);
}

.stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 2;
}

.scroll-arrow {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--border-blue), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ============================================================
   SOBRE
   ============================================================ */
.sobre-section {
  background: var(--bg-800);
}

.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.sobre-visual {
  position: relative;
  min-height: 420px;
}

.sobre-card-main {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px 36px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.sobre-icon-big {
  font-size: 4rem;
  margin-bottom: 32px;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.4));
}

.sobre-expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tag {
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid;
}
.tag-siemens { background: rgba(0, 168, 220, 0.12); border-color: rgba(0, 168, 220, 0.3); color: #38bdf8; }
.tag-fanuc   { background: rgba(249, 115, 22, 0.1);  border-color: rgba(249, 115, 22, 0.25); color: #fb923c; }
.tag-plc     { background: rgba(34, 211, 160, 0.1);  border-color: rgba(34, 211, 160, 0.25); color: #34d399; }
.tag-cnc     { background: rgba(167, 139, 250, 0.1); border-color: rgba(167, 139, 250, 0.25); color: #a78bfa; }
.tag-vfd     { background: rgba(250, 204, 21, 0.1);  border-color: rgba(250, 204, 21, 0.25);  color: #facc15; }
.tag-motor   { background: rgba(236, 72, 153, 0.1);  border-color: rgba(236, 72, 153, 0.25); color: #f472b6; }

.sobre-card-floating {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-800);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 20px rgba(0, 212, 255, 0.08);
}

.card-float-1 {
  top: -24px;
  right: -20px;
  animation: floatY 4s ease-in-out infinite;
}
.card-float-2 {
  bottom: 20px;
  left: -20px;
  animation: floatY 4s ease-in-out infinite 2s;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.float-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}
.float-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sobre-content { padding: 16px 0; }

.sobre-text {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 16px;
  line-height: 1.75;
}
.sobre-text strong { color: var(--text-primary); }

.sobre-pilares {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 32px 0;
}

.pilar {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.pilar:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
}

.pilar-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.pilar-title { font-weight: 600; font-size: 0.95rem; margin-bottom: 4px; }
.pilar-text { font-size: 0.85rem; color: var(--text-secondary); }

.sobre-info {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.info-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 14px;
}

/* ============================================================
   SERVIÇOS
   ============================================================ */
.servicos-section {
  background: var(--bg-900);
}

.servicos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.servico-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.servico-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-500), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.servico-card:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-blue);
}
.servico-card:hover::before { opacity: 1; }

.servico-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.siemens-color  { background: rgba(0, 168, 220, 0.12); color: #38bdf8; }
.fanuc-color    { background: rgba(249, 115, 22, 0.12); color: #fb923c; }
.plc-color      { background: rgba(34, 211, 160, 0.12); color: #34d399; }
.inversor-color { background: rgba(250, 204, 21, 0.12); color: #facc15; }
.motor-color    { background: rgba(236, 72, 153, 0.12); color: #f472b6; }
.medicao-color  { background: rgba(167, 139, 250, 0.12); color: #a78bfa; }

.servico-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.servico-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.servico-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.servico-list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}
.servico-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--blue-500);
  font-weight: 700;
}

/* ============================================================
   DIFERENCIAIS
   ============================================================ */
.diferenciais-section {
  background: var(--bg-800);
}

.diferenciais-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.diferencial-item {
  background: var(--bg-card);
  padding: 40px 32px;
  display: flex;
  gap: 20px;
  transition: var(--transition);
}

.diferencial-item:hover {
  background: var(--bg-card-hover);
}

.dif-number {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--border-blue);
  line-height: 1;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--blue-500) 0%, rgba(0, 212, 255, 0.2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dif-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.dif-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   CONTATO
   ============================================================ */
.contato-section {
  background: var(--bg-900);
}

.contato-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.contato-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 40px;
  line-height: 1.7;
}

.contato-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contato-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
}
.contato-card:hover {
  border-color: var(--border-blue);
  transform: translateX(6px);
}

.contato-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contato-whatsapp .contato-card-icon { background: rgba(34, 197, 94, 0.12); color: #4ade80; }
.contato-email   .contato-card-icon  { background: rgba(0, 212, 255, 0.10);  color: var(--blue-500); }
.contato-local   .contato-card-icon  { background: rgba(249, 115, 22, 0.10); color: #fb923c; }

.contato-card-title {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.contato-card-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contato-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
}

.contato-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 16px;
  outline: none;
  transition: var(--transition);
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-800);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.footer-tagline {
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-col h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a, .footer-col span {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-col a:hover { color: var(--blue-500); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   ANIMATIONS / REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .servicos-grid { grid-template-columns: repeat(2, 1fr); }
  .diferenciais-grid { grid-template-columns: repeat(2, 1fr); }
  .sobre-grid { gap: 48px; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  .nav-links, .btn-nav { display: none; }
  .hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg-900);
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 999;
  }
  .nav-links.open .nav-link {
    font-size: 1.5rem;
  }

  .sobre-grid { grid-template-columns: 1fr; }
  .sobre-visual { min-height: 300px; }
  .card-float-1 { top: -10px; right: 0; }
  .card-float-2 { bottom: -10px; left: 0; }

  .servicos-grid { grid-template-columns: 1fr; }
  .diferenciais-grid { grid-template-columns: 1fr; }

  .contato-grid { grid-template-columns: 1fr; gap: 48px; }
  .contato-form-wrap { padding: 28px 20px; }

  .hero-stats { padding: 20px; gap: 0; }
  .stat-item { padding: 0 20px; }

  .footer-grid { flex-direction: column; }
  .footer-links { gap: 32px; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .stat-divider { width: 60px; height: 1px; }
  .contato-form-wrap { padding: 24px 16px; }
}