/* ============================================
   MBA Soluções — Design System
   Modern dark tech theme
   ============================================ */

:root {
  /* Colors */
  --bg-primary: #09090b;
  --bg-secondary: #0f0f13;
  --bg-tertiary: #16161d;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;
  --bg-elevated: #1e1e2a;

  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-dark: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --accent-glow-strong: rgba(59, 130, 246, 0.3);

  --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
  --gradient-text: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #22d3ee 100%);

  --border: #27272a;
  --border-light: #3f3f46;

  --success: #22c55e;
  --whatsapp: #25d366;

  /* Spacing */
  --container: 1200px;
  --section-py: 120px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-light);
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 600;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-dark);
  box-shadow: 0 0 30px var(--accent-glow-strong);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-ghost:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-muted);
}

/* ============================================
   Header
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 800;
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-accent {
  color: var(--accent-light);
}

.nav {
  display: flex;
  gap: 32px;
}

.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;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 100%);
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.glow-1 {
  width: 600px;
  height: 600px;
  background: rgba(59, 130, 246, 0.15);
  top: -200px;
  left: -100px;
  animation: float 8s ease-in-out infinite;
}

.glow-2 {
  width: 500px;
  height: 500px;
  background: rgba(139, 92, 246, 0.1);
  bottom: -200px;
  right: -100px;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-light);
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  margin-bottom: 32px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(59, 130, 246, 0); }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.stat-plus {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-light);
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

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

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  animation: bounce 2s infinite;
}

.hero-scroll a {
  color: var(--text-muted);
  transition: var(--transition);
}

.hero-scroll a:hover {
  color: var(--accent-light);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   Services
   ============================================ */

.services {
  padding: var(--section-py) 0;
  background: var(--bg-secondary);
}

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

.service-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient);
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-4px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card.featured {
  border-color: rgba(59, 130, 246, 0.3);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.05) 0%, var(--bg-card) 100%);
}

.service-card.featured::before {
  opacity: 1;
}

.service-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-light);
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-md);
  color: var(--accent-light);
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-features li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-features li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ============================================
   About
   ============================================ */

.about {
  padding: var(--section-py) 0;
}

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

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-content .section-title {
  text-align: left;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}

.highlight {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.highlight-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-sm);
  color: var(--accent-light);
  flex-shrink: 0;
}

.highlight strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.highlight span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Code Window */
.about-visual {
  display: flex;
  justify-content: center;
}

.code-window {
  width: 100%;
  max-width: 460px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot.red { background: #ff5f57; }
.code-dot.yellow { background: #febc2e; }
.code-dot.green { background: #28c840; }

.code-title {
  margin-left: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.code-body {
  padding: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  line-height: 1.8;
  overflow-x: auto;
}

.code-body code {
  font-family: inherit;
}

.code-keyword { color: #c678dd; }
.code-var { color: #e5c07b; }
.code-prop { color: #61afef; }
.code-string { color: #98c379; }

/* ============================================
   CTA
   ============================================ */

.cta {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.cta-box {
  position: relative;
  text-align: center;
  padding: 80px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-box h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 16px;
  position: relative;
}

.cta-box p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1.1rem;
  position: relative;
}

.cta-box .btn {
  position: relative;
}

/* ============================================
   Contact
   ============================================ */

.contact {
  padding: var(--section-py) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  align-items: start;
}

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

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.contact-card-icon.whatsapp {
  background: rgba(37, 211, 102, 0.1);
  color: var(--whatsapp);
}

.contact-card-icon.email {
  background: var(--accent-glow);
  color: var(--accent-light);
}

.contact-card-icon.location {
  background: rgba(139, 92, 246, 0.1);
  color: #a78bfa;
}

.contact-card strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.contact-card span {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.925rem;
  transition: var(--transition);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2371717a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 300px;
}

.footer-links h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-company p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ============================================
   WhatsApp Float
   ============================================ */

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background: var(--whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  animation: pulse-whatsapp 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

@keyframes pulse-whatsapp {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1); }
}

/* ============================================
   Cookie Banner
   ============================================ */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10000;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  transform: translateY(100%);
  transition: var(--transition-slow);
}

.cookie-banner.visible {
  transform: translateY(0);
}

.cookie-content {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cookie-content p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.cookie-content a {
  color: var(--accent-light);
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

/* ============================================
   Animations on scroll
   ============================================ */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-visual {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: 80px;
  }

  .nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(9, 9, 11, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 100;
  }

  .nav.open {
    display: flex;
  }

  .nav-link {
    font-size: 1.25rem;
  }

  .menu-toggle {
    display: flex;
    z-index: 101;
  }

  .header .btn-sm {
    display: none;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .stat-divider {
    width: 48px;
    height: 1px;
  }

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cta-box {
    padding: 48px 24px;
  }

  .cookie-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    justify-content: center;
  }
}