:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --accent: #0ea5e9;
  --bg: #0f0f1b;
  --surface: #151525;
  --text: #f0f0ff;
  --text-secondary: #a0a0c0;
  --radius: 16px;
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

html {
  scroll-behavior: smooth;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 2;
  padding: 0 20px;
  background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), transparent 40%),
              radial-gradient(circle at bottom left, rgba(139, 92, 246, 0.15), transparent 40%);
}

.hero-content {
  max-width: 768px;
  z-index: 3;
  padding: 0 16px;
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  margin-bottom: 1.2rem;
  background: linear-gradient(90deg, #ffffff, #a78bfa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.1;
}

.hero p {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.2);
  color: white;
  margin-left: 16px;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
}

/* Seções */
section {
  padding: 120px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 72px;
}

.section-title h2 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--accent), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-title p {
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
  font-size: 1.15rem;
}

/* Cards de serviço e portfólio */
.services-grid, .portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.service-card, .portfolio-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.service-card:hover, .portfolio-card:hover {
  transform: translateY(-8px);
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.service-icon, .portfolio-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 1.8rem;
  color: white;
}

.service-card h3, .portfolio-card h3 {
  font-size: 1.4rem;
  margin-bottom: 16px;
  font-weight: 700;
}

.service-card p, .portfolio-card p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.portfolio-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.portfolio-link:hover {
  text-decoration: underline;
}

/* About */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  transition: transform 0.6s ease;
}

.about-image img {
  width: 100%;
  display: block;
  transition: transform 0.6s ease;
}

.about-image:hover img {
  transform: scale(1.05);
}

.about-text h3 {
  font-size: 2.2rem;
  margin-bottom: 24px;
  font-weight: 800;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.about-text p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

/* CTA */
.cta {
  background: linear-gradient(120deg, var(--surface), #1d1d35);
  border-radius: var(--radius);
  padding: 90px 40px;
  text-align: center;
  margin: 0 auto;
  max-width: 900px;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.cta h2 {
  font-size: 2.4rem;
  margin-bottom: 20px;
  font-weight: 800;
}

.cta p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  margin-bottom: 36px;
}

/* Footer */
footer {
  padding: 80px 0 40px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Animação 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);
}

/* Responsivo */
@media (max-width: 992px) {
  .about-content { grid-template-columns: 1fr; }
  .about-image { order: -1; }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2.8rem; }
  .hero p { font-size: 1.15rem; }
  section { padding: 80px 0; }
  .btn {
    width: 100%;
    margin-bottom: 12px;
  }
  .btn-secondary { margin-left: 0; }
}

@media (max-width: 576px) {
  .hero h1 { font-size: 2.2rem; }
  .section-title h2 { font-size: 2rem; }
  .cta { padding: 60px 20px; }
  .cta h2 { font-size: 1.9rem; }
}

/* Chatbot */
.message {
  margin-bottom: 12px;
  padding: 10px 14px;
  border-radius: 12px;
  max-width: 80%;
  word-wrap: break-word;
}
.bot { background: var(--primary); color: white; align-self: flex-start; }
.user { background: var(--accent); color: white; align-self: flex-end; margin-left: auto; }
#chatbot-container { display: none; }
#chatbot-container.visible { display: flex; flex-direction: column; }