/* =====================================================
   RALTEC-LAB — Folha de Estilos Principal
   ===================================================== */

:root {
  --bg-dark: #0a0a0f;
  --bg-card: #111118;
  --bg-card2: #16161f;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59,130,246,0.15);
  --text-primary: #f0f4ff;
  --text-muted: #8b94b0;
  --text-subtle: #5a6380;
  --border: rgba(255,255,255,0.07);
  --border-accent: rgba(59,130,246,0.3);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-accent: 0 0 32px rgba(59,130,246,0.12);
  --transition: 0.25s ease;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  min-height: 100vh;
}

/* ── TYPOGRAPHY ── */
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; line-height: 1.15; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: 1.15rem; font-weight: 600; line-height: 1.3; }
p  { color: var(--text-muted); line-height: 1.75; }
a  { color: inherit; text-decoration: none; }

.text-accent { color: var(--accent); }
.label-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}

/* ── CONTAINER ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(59,130,246,0.3);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 6px 24px rgba(59,130,246,0.4); }
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.btn-lg { padding: 15px 32px; font-size: 1rem; }

/* ── NAVBAR ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}
.nav-logo img { height: 32px; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.nav-cta { margin-left: 12px; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all var(--transition); }

/* ── MOBILE MENU ── */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 20px;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 12px 16px;
  border-radius: 8px;
  color: var(--text-muted);
  font-weight: 500;
  transition: all var(--transition);
}
.mobile-menu a:hover, .mobile-menu a.active { background: var(--accent-glow); color: var(--accent); }
.mobile-menu .btn { margin-top: 8px; justify-content: center; }

/* ── HERO ── */
.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
  text-align: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('images/hero-lab.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center top, rgba(59,130,246,0.08) 0%, transparent 70%);
  z-index: 0;
}
.hero-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; padding: 0 24px; }
.hero h1 { margin: 12px 0 20px; }
.hero p { font-size: 1.1rem; max-width: 600px; margin: 0 auto 36px; color: var(--text-muted); }
.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── SECTION ── */
section { padding: 80px 0; }
.section-header { text-align: center; max-width: 600px; margin: 0 auto 56px; }
.section-header p { margin-top: 14px; }

/* ── CARDS GRID ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}
.card:hover { border-color: var(--border-accent); transform: translateY(-3px); box-shadow: var(--shadow-accent); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
}
.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.9rem; }
.card ul { list-style: none; margin-top: 14px; display: flex; flex-direction: column; gap: 6px; }
.card ul li { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; color: var(--text-muted); }
.card ul li::before { content: '✓'; color: var(--accent); font-weight: 700; font-size: 0.8rem; }

/* ── STATS STRIP ── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 48px;
}
.stat-item {
  background: var(--bg-card);
  padding: 32px 24px;
  text-align: center;
}
.stat-number { font-size: 2.2rem; font-weight: 800; color: var(--accent); line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 6px; }

/* ── FEATURES LIST ── */
.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all var(--transition);
}
.feature-item:hover { border-color: var(--border-accent); color: var(--text-primary); }
.feature-item span.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

/* ── TWO COLUMN LAYOUT ── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.two-col img { width: 100%; border-radius: var(--radius-lg); border: 1px solid var(--border); }

/* ── SEGMENTS ── */
.segments-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}
.segment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}
.segment-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
.segment-icon { font-size: 2rem; margin-bottom: 12px; }
.segment-card h3 { font-size: 1rem; margin-bottom: 6px; }
.segment-card p { font-size: 0.825rem; }

/* ── CTA BANNER ── */
.cta-banner {
  background: linear-gradient(135deg, var(--bg-card2) 0%, rgba(59,130,246,0.08) 100%);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
}
.cta-banner h2 { margin-bottom: 14px; }
.cta-banner p { margin-bottom: 28px; max-width: 480px; margin-left: auto; margin-right: auto; }

/* ── SOBRE PAGE ── */
.mission-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 56px; }
.mission-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.mission-card h3 { font-size: 1.1rem; margin-bottom: 12px; color: var(--accent); }

/* ── CONTACT PAGE ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; align-items: start; }
.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact-info-card h3 { font-size: 1.1rem; margin-bottom: 24px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 22px; align-items: flex-start; }
.contact-item-icon {
  width: 40px; height: 40px;
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; flex-shrink: 0;
}
.contact-item-text { font-size: 0.875rem; }
.contact-item-text strong { display: block; color: var(--text-primary); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 3px; }
.contact-item-text a { color: var(--text-muted); transition: color var(--transition); }
.contact-item-text a:hover { color: var(--accent); }

/* ── FORM ── */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-card h3 { margin-bottom: 6px; }
.form-card > p { font-size: 0.875rem; margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form-group label .req { color: var(--accent); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-subtle); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}
.form-group select { cursor: pointer; }
.form-group select option { background: #1a1a25; }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-submit { width: 100%; margin-top: 8px; justify-content: center; font-size: 1rem; padding: 14px; }
.form-success {
  display: none;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  color: #86efac;
  font-size: 0.9rem;
  margin-top: 16px;
}
.form-error {
  display: none;
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  color: #fca5a5;
  font-size: 0.9rem;
  margin-top: 16px;
}

/* ── FOOTER ── */
footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand p { font-size: 0.875rem; margin-top: 14px; max-width: 280px; }
.footer-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1rem; }
.footer-logo img { height: 28px; }
.footer-col h4 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-subtle); margin-bottom: 16px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 0.875rem; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--text-primary); }
.footer-col ul li { font-size: 0.875rem; color: var(--text-muted); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-subtle);
}

/* ── PAGE HERO (inner pages) ── */
.page-hero { padding: 72px 0 64px; text-align: center; }
.page-hero h1 { margin-top: 12px; }
.page-hero p { max-width: 580px; margin: 14px auto 0; font-size: 1.05rem; }

/* ── LOADING ── */
.btn-loading { opacity: 0.7; pointer-events: none; }
.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .two-col, .contact-grid, .mission-grid { grid-template-columns: 1fr; }
  .two-col img { order: -1; }
  .segments-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  section { padding: 56px 0; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .stats-strip { grid-template-columns: 1fr; }
  .stats-strip .stat-item { border-bottom: 1px solid var(--border); }
  .segments-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: center; }
  .cards-grid { grid-template-columns: 1fr; }
}

/* ── REDES SOCIAIS ── */
.social-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}
.social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px !important;
  height: 28px !important;
  border-radius: 7px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  transition: all var(--transition);
  text-decoration: none;
  flex-shrink: 0;
}
.social-btn svg {
  width: 13px !important;
  height: 13px !important;
  fill: #6b7494 !important;
  transition: fill var(--transition);
  display: block;
  flex-shrink: 0;
  pointer-events: none;
}
.social-btn:hover { transform: translateY(-2px); }
.social-btn.facebook:hover  { background: rgba(24,119,242,0.12); border-color: rgba(24,119,242,0.4); }
.social-btn.facebook:hover svg  { fill: #1877f2 !important; }
.social-btn.instagram:hover { background: rgba(221,42,123,0.12); border-color: rgba(221,42,123,0.4); }
.social-btn.instagram:hover svg { fill: #dd2a7b !important; }
.social-btn.linkedin:hover  { background: rgba(10,102,194,0.12); border-color: rgba(10,102,194,0.4); }
.social-btn.linkedin:hover svg  { fill: #0a66c2 !important; }
.social-btn.whatsapp:hover  { background: rgba(37,211,102,0.12); border-color: rgba(37,211,102,0.4); }
.social-btn.whatsapp:hover svg  { fill: #25d366 !important; }

/* ── WHATSAPP FLUTUANTE ── */
.wa-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  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);
  color: #fff;
  text-decoration: none;
  transition: all var(--transition);
  animation: wa-pulse 2.5s infinite;
}
.wa-float:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,0.55); }
.wa-float svg { width: 28px; height: 28px; fill: #fff; }
.wa-tooltip {
  position: absolute;
  right: 66px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.wa-float:hover .wa-tooltip { opacity: 1; }
@keyframes wa-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(37,211,102,0.5); }
  70%  { box-shadow: 0 0 0 12px rgba(37,211,102,0); }
  100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}