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

:root {
  --primary: #667eea;
  --secondary: #764ba2;
  --dark: #1a1a2e;
  --light: #f8f9fa;
  --text: #333;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

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

html {
  scroll-behavior: smooth;
}

/* HEADER */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: all 0.3s ease;
}

nav {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: width 0.3s;
}

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

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  color: white;
  text-align: center;
  padding: 8rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 900;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero .subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero .description {
  font-size: 1.1rem;
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.btn-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 2.5rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  transition: all 0.3s ease;
  display: inline-block;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: var(--primary);
}

/* SECTIONS */
section {
  padding: 6rem 2rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 1rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 4rem;
}

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

.about-image {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.about-content h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--dark);
}

.about-content p {
  font-size: 1.1rem;
  color: #666;
  margin-bottom: 1.5rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.stat-card {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.stat-number {
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 1rem;
  color: #666;
  margin-top: 0.5rem;
}

/* SERVICES */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: white;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 50px rgba(102, 126, 234, 0.2);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.service-card p {
  color: #666;
  margin-bottom: 1rem;
}

.service-card .price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 1.5rem;
}

/* PORTFOLIO */
#portfolio {
  background: var(--light);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
}

/* Indicador visual de que é clicável */
.portfolio-item[style*='cursor: pointer']::after {
  content: '🔗';
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 1.5rem;
  opacity: 0;
  transition: opacity 0.3s;
}

.portfolio-item[style*='cursor: pointer']:hover::after {
  opacity: 1;
}

.portfolio-item {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
}

.portfolio-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.portfolio-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.portfolio-info {
  padding: 2rem;
}

.portfolio-category {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.portfolio-item h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.portfolio-item p {
  color: #666;
  margin-bottom: 1.5rem;
}

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: #f0f3ff;
  color: var(--primary);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}
.portfolio-link {
  color: red;
  text-decoration: none;
  display: flex;
  gap: 1rem;
}
/* SKILLS */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.skill-card {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.skill-card h4 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.skill-bar {
  background: #e0e0e0;
  height: 10px;
  border-radius: 10px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.skill-progress {
  height: 100%;
  background: var(--gradient);
  border-radius: 10px;
  transition: width 1s ease;
}

/* TESTIMONIALS */
#testimonials {
  background: var(--light);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.testimonial-card {
  background: white;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.stars {
  color: #ffc107;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.testimonial-card p {
  font-size: 1.1rem;
  color: #333;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  border-top: 2px solid #f0f0f0;
  padding-top: 1rem;
}

.testimonial-author strong {
  display: block;
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 0.25rem;
}

.testimonial-author span {
  color: #666;
  font-size: 0.9rem;
}

/* CONTACT */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  flex-shrink: 0;
}

.contact-details h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--dark);
}

.contact-details p {
  color: #666;
}

.contact-form {
  background: white;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.btn-submit {
  width: 100%;
  padding: 1.2rem;
  background: var(--gradient);
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-submit:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* FOOTER */
footer {
  background: var(--dark);
  color: white;
  padding: 3rem 2rem 1.5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
}

.footer-section p {
  color: #aaa;
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: #aaa;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: var(--primary);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  width: 45px;
  height: 45px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: all 0.3s;
  font-size: 1.2rem;
  font-weight: 700;
}

.social-links a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-bottom {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 1.5rem 2rem;
  margin-top: 2rem;
  gap: 2rem;
}
.copyright {
  font-size: 0.85rem;
  color: #aaa;
  text-align: center;
  grid-column: 2; /* Fica na coluna do meio */
}

.dev-credit {
  grid-column: 3; /* Fica na última coluna (direita) */
  justify-self: end;
}

.dev-credit p {
  font-size: 0.85rem;
  color: #aaa;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.dev-link {
  color: #667eea;
  text-decoration: none;
  transition: all 0.3s;
}

.dev-link:hover {
  color: #764ba2;
  text-decoration: underline;
}

.dev-separator {
  color: #666;
  margin: 0 4px;
}

.dev-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: #aaa;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  transition: all 0.3s;
  margin: 0 2px;
}

.dev-social-link:hover {
  background: rgba(102, 126, 234, 0.2);
  color: #667eea;
  transform: translateY(-2px);
}

.dev-social-link svg {
  display: block;
}

/* Responsivo */
@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
    padding: 1.5rem 1rem;
  }

  .copyright {
    font-size: 0.75rem;
  }

  .dev-credit p {
    font-size: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
  }
}
/* BOTÃO VOLTAR AO TOPO */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(100px);
  transition: all 0.3s ease;
  box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.6);
}

.back-to-top:active {
  transform: translateY(-2px);
}

/* Responsivo */
@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 1.3rem;
  }
}
/* LOADING */
.loading {
  text-align: center;
  padding: 3rem;
  color: #666;
  font-size: 1.2rem;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero .subtitle {
    font-size: 1.2rem;
  }

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

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

  .section-title {
    font-size: 2rem;
  }

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

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

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

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

/* ANIMATIONS */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.8s ease-out;
}