/* ============================================
   SPARTAN SOLUÇÕES - Design System
   Dark Premium | Corporativo Técnico
   ============================================ */

:root {
  /* Cores principais extraídas do logo */
  --blue-900: #020617;
  --blue-850: #0a1628;
  --blue-800: #0f172a;
  --blue-700: #1e293b;
  --blue-600: #1e3a5f;
  --blue-500: #1d4ed8;
  --blue-400: #3b82f6;
  --blue-300: #60a5fa;
  --blue-200: #93c5fd;
  --blue-100: #dbeafe;

  --accent: #2563eb;
  --accent-hover: #3b82f6;
  --accent-glow: rgba(37, 99, 235, 0.35);

  --white: #ffffff;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;

  --success: #10b981;
  --whatsapp: #25d366;

  /* Tipografia */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', system-ui, sans-serif;

  /* Espaçamentos */
  --container: 1200px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--blue-900);
  color: var(--gray-200);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.75rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.875rem, 4vw, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  color: var(--gray-400);
  font-size: 1.0625rem;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ========== HEADER ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition);
}

.header.scrolled {
  background: rgba(2, 6, 23, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo img {
  height: 48px;
  width: auto;
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white);
  letter-spacing: 0.02em;
}

.logo-text span {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--blue-300);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-300);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 0 0 0 var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.1);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: var(--white);
}

.btn-whatsapp:hover {
  background: #1da851;
  transform: translateY(-1px);
}

/* Mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  padding: 0.5rem;
}

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

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(37, 99, 235, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(29, 78, 216, 0.15), transparent),
    var(--blue-900);
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black, transparent);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 4rem 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--blue-300);
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--blue-300), var(--blue-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lead {
  font-size: 1.25rem;
  color: var(--gray-400);
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.stat-item strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.25rem;
}

.stat-item span {
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* ========== SECTIONS ========== */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-400);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
}

/* ========== SERVICE CARDS (com hover interativo) ========== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.service-card {
  position: relative;
  background: var(--blue-800);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}

.service-card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(37,99,235,0.2);
}

.service-card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--blue-700);
}

.service-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Efeito principal solicitado: troca suave + zoom */
.service-card-image .img-default {
  opacity: 1;
  transform: scale(1);
}

.service-card-image .img-hover {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.08);
}

.service-card:hover .img-default {
  opacity: 0;
  transform: scale(1.1);
}

.service-card:hover .img-hover {
  opacity: 1;
  transform: scale(1);
}

.service-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(2,6,23,0.9) 0%, transparent 60%);
  z-index: 2;
  pointer-events: none;
}

.service-card-content {
  padding: 1.75rem;
}

.service-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.15);
  border-radius: 12px;
  margin-bottom: 1.25rem;
  color: var(--blue-300);
}

.service-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.service-card p {
  font-size: 0.9375rem;
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue-300);
}

.service-card-link svg {
  transition: transform var(--transition);
}

.service-card:hover .service-card-link {
  color: var(--blue-200);
}

.service-card:hover .service-card-link svg {
  transform: translateX(4px);
}

/* ========== ABOUT TEASER ========== */
.about-teaser {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-teaser-content .eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-400);
  margin-bottom: 0.75rem;
}

.about-teaser-content h2 {
  margin-bottom: 1.25rem;
}

.about-teaser-content p {
  margin-bottom: 1.5rem;
}

.about-features {
  display: grid;
  gap: 1rem;
  margin: 2rem 0;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}

.about-feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--blue-400);
  margin-top: 2px;
}

.about-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--blue-800);
  border: 1px solid rgba(255,255,255,0.06);
}

.about-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== PARTNERS ========== */
.partners {
  background: var(--blue-850);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  padding: 3rem 0;
}

.partners-label {
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 1.5rem;
}

.partners-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
}

.partner-logo {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-500);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.partner-logo:hover {
  color: var(--gray-300);
}

/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 6rem 0;
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(37, 99, 235, 0.2), transparent);
  z-index: 0;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--blue-850);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  font-size: 0.9375rem;
  margin: 1rem 0 1.5rem;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  border-radius: 10px;
  color: var(--gray-400);
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--accent);
  color: var(--white);
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray-300);
  margin-bottom: 1.25rem;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col a {
  font-size: 0.9375rem;
  color: var(--gray-500);
}

.footer-col a:hover {
  color: var(--blue-300);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* ========== WHATSAPP FLOAT ========== */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: var(--whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  transition: all var(--transition);
  color: white;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
}

/* ========== ANIMATIONS ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .about-teaser {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--blue-850);
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    gap: 0;
  }

  .nav.open {
    display: flex;
  }

  .nav-link {
    padding: 0.875rem 0;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.04);
  }

  .menu-toggle {
    display: block;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.25rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== UTILS ========== */
.text-gradient {
  background: linear-gradient(135deg, var(--blue-300), var(--blue-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }