/* Reset e configurações básicas */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #007bff;
  --secondary-color: #0056b3;
  --accent-color: #ffa500;
  --text-dark: #333;
  --text-light: #fff;
  --bg-primary: #fffbf0;
  --bg-dark: #000;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 6px 12px rgba(0, 0, 0, 0.2);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

body {
  background-color: var(--bg-primary);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
}

/* Header e Navegação */
header {
  padding: 1rem 0;
  background-color: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

#menu {
  display: flex;
  justify-content: center;
}

.nav_ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.nav_ul_li_a {
  text-decoration: none;
  color: var(--text-light);
  font-size: 1.2rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.nav_ul_li_a:hover {
  color: var(--primary-color);
  background-color: rgba(255, 255, 255, 0.1);
}

/* Layout principal */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container {
  max-width: 100%;
  margin: 0 auto;
  padding: 2rem 0;
}

/* Seção Sobre */
#sobre {
  padding: 3rem 0;
}

.about-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
}

.minha-foto {
  max-width: 250px;
  width: 100%;
  height: auto;
  border-radius: 50%;
  box-shadow: var(--shadow-hover);
  object-fit: cover;
  aspect-ratio: 1;
}

.texto-sobre-mim {
  flex: 1;
  max-width: 600px;
}

.texto-sobre-mim h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-weight: 700;
}

.texto-sobre-mim h2 {
  font-size: 1.5rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  font-weight: 400;
}

.texto-sobre-mim p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  text-align: justify;
  line-height: 1.8;
}

.btn-download {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--primary-color);
  color: var(--text-light);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.btn-download:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* Seções gerais */
.section-title {
  text-align: center;
  font-size: 2.5rem;
  color: var(--accent-color);
  margin: 3rem 0 2rem 0;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Seção Habilidades */
.skills-section {
  padding: 3rem 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.skill-card {
  background: var(--text-light);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.skill-content {
  text-align: center;
}

.skill-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
  font-weight: 600;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.skill-icon {
  width: 50px;
  height: 50px;
  transition: var(--transition);
  border-radius: var(--border-radius);
  padding: 5px;
  background-color: rgba(255, 255, 255, 0.8);
}

.skill-icon:hover {
  transform: scale(1.2);
  background-color: var(--text-light);
  box-shadow: var(--shadow);
}

/* Seção Projetos */
.projects-section {
  padding: 3rem 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  text-align: center;
  padding: 2rem;
  background: var(--text-light);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.project-icon {
  border-radius: 50%;
  border: 3px solid var(--primary-color);
  transition: var(--transition);
  margin-bottom: 1rem;
}

.project-icon:hover {
  transform: scale(1.1);
  border-color: var(--secondary-color);
}

.project-card h3 {
  font-size: 1.2rem;
  color: var(--text-dark);
  margin-top: 1rem;
  font-weight: 600;
}

/* Seção Contato */
.contact-section {
  padding: 3rem 0;
}

.contact-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.contact-icon {
  transition: var(--transition);
  border-radius: 50%;
  padding: 5px;
  background-color: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.contact-icon:hover {
  transform: scale(1.2);
  box-shadow: var(--shadow-hover);
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 0;
  margin-top: 4rem;
  background-color: var(--bg-dark);
  color: var(--text-light);
}

footer p {
  font-size: 1rem;
  opacity: 0.8;
}

/* Responsividade */
@media (min-width: 768px) {
  .about-content {
    flex-direction: row;
    text-align: left;
    gap: 3rem;
  }
  
  .minha-foto {
    max-width: 300px;
    flex-shrink: 0;
  }
  
  .texto-sobre-mim h1 {
    font-size: 3rem;
  }
  
  .texto-sobre-mim h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 768px) {
  .nav_ul {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .nav_ul_li_a {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .texto-sobre-mim h1 {
    font-size: 2rem;
  }
  
  .texto-sobre-mim h2 {
    font-size: 1.3rem;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .contact-grid {
    gap: 1.5rem;
  }
  
  .skill-icon,
  .contact-icon {
    width: 45px;
    height: 45px;
  }
}

@media (max-width: 480px) {
  main {
    padding: 0 0.5rem;
  }
  
  .container {
    padding: 1rem 0;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .texto-sobre-mim h1 {
    font-size: 1.8rem;
  }
  
  .texto-sobre-mim p {
    font-size: 1rem;
  }
  
  .skill-card,
  .project-card {
    padding: 1.5rem;
  }
  
  .btn-download {
    padding: 10px 20px;
    font-size: 1rem;
  }
  
  .skill-icon,
  .contact-icon {
    width: 40px;
    height: 40px;
  }
}

/* Animações e melhorias de performance */
@media (prefers-reduced-motion: no-preference) {
  .skill-icon,
  .project-icon,
  .contact-icon {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .btn-download {
    transition: all 0.3s ease;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Foco para acessibilidade */
.nav_ul_li_a:focus,
.btn-download:focus,
.contact-grid a:focus,
.project-card a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Melhorias de contraste para acessibilidade */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #0056b3;
    --text-dark: #000;
    --bg-primary: #fff;
  }
  
  .skill-card,
  .project-card {
    border: 2px solid var(--text-dark);
  }
}

/* Modo escuro (se suportado pelo navegador) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #1a1a1a;
    --text-dark: #e0e0e0;
    --text-light: #ffffff;
  }
  
  body {
    background-color: var(--bg-primary);
    color: var(--text-dark);
  }
  
  .skill-card,
  .project-card {
    background-color: #2d2d2d;
    border-color: #404040;
  }
}