:root {
  /* Cores principais */
  --color-bg-primary: #121212;
  --color-bg-secondary: #1e1e1e;
  --color-bg-tertiary: #2d2d2d;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-accent-primary: #8a2be2; 
  --color-accent-secondary: #00bfff; 
  --color-accent-tertiary: #ff4081; /* Rosa */
  
  /* Cores para gráficos */
  --color-html: #e34c26;
  --color-css: #264de4;
  --color-js: #f7df1e;
  --color-python: #3776ab;
  --color-java: #007396;
  --color-sql: #f29111;
  --color-mongodb: #4db33d;
  
  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
  
  /* Fontes */
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Roboto', sans-serif;
  
  /* Tamanhos */
  --header-height: 70px;
  --container-max-width: 1200px;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  
  /* Transições */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset e estilos base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header e navegação */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(18, 18, 18, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo h1 {
  font-size: 1.8rem;
  font-weight: 700;
}

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

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0;
}

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

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

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

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Seção Hero */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 50%, rgba(138, 43, 226, 0.1) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(to right, var(--color-text-primary), var(--color-accent-primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-text h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-accent-secondary);
}

.hero-text p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  max-width: 600px;
  color: var(--color-text-secondary);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  border-radius: var(--border-radius-md);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  outline: none;
}

.primary-btn {
  background-color: var(--color-accent-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(138, 43, 226, 0.4);
}

.primary-btn:hover {
  background-color: #7b27c9;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(138, 43, 226, 0.5);
}

.secondary-btn {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-accent-primary);
}

.secondary-btn:hover {
  background-color: rgba(138, 43, 226, 0.1);
  transform: translateY(-3px);
}

.hero-social {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-size: 1.2rem;
  transition: all var(--transition-normal);
}

.social-icon:hover {
  background-color: var(--color-accent-primary);
  transform: translateY(-5px);
  color: white;
}

/* Seções gerais */
.section {
  padding: 100px 0;
  position: relative;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 80px;
  height: 4px;
  background: linear-gradient(to right, var(--color-accent-primary), var(--color-accent-secondary));
  border-radius: 2px;
  left: 50%;
  transform: translateX(-50%);
}

/* Seção Sobre */
.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

.info-card, .objetivo-card {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.info-card:hover, .objetivo-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.info-card h3, .objetivo-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--color-accent-primary);
}

.info-card ul li {
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
}

.info-card ul li i {
  margin-right: 1rem;
  color: var(--color-accent-secondary);
  width: 20px;
}

/* Timeline para Formação e Experiência */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-accent-primary), var(--color-accent-secondary));
}

.timeline-item {
  position: relative;
  width: 100%;
  padding: 20px 0;
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-left: auto;
  margin-right: 60px;
  text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: 60px;
  margin-right: auto;
}

.timeline-content {
  position: relative;
  width: calc(50% - 40px);
  padding: 1.5rem;
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.timeline-content::before {
  content: '';
  position: absolute;
  top: 20px;
  width: 20px;
  height: 20px;
  background-color: var(--color-accent-primary);
  border-radius: 50%;
}

.timeline-item:nth-child(odd) .timeline-content::before {
  right: -70px;
}

.timeline-item:nth-child(even) .timeline-content::before {
  left: -70px;
}

.timeline-content h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent-primary);
}

.timeline-content h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent-secondary);
}

.timeline-date {
  font-size: 0.9rem;
  font-style: italic;
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

.timeline-content ul {
  margin-top: 1rem;
  padding-left: 1.5rem;
}

.timeline-content ul li {
  margin-bottom: 0.5rem;
  position: relative;
}

.timeline-content ul li::before {
  content: '•';
  position: absolute;
  left: -1rem;
  color: var(--color-accent-primary);
}

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

.project-card {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.project-content {
  padding: 1.5rem;
}

.project-content h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--color-accent-primary);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.project-tags span {
  background-color: var(--color-bg-tertiary);
  color: var(--color-accent-secondary);
  padding: 0.3rem 0.8rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
}

/* Habilidades */
.skills-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.skills-charts {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.skills-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.skill-item {
  width: 100%;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.skill-name {
  font-weight: 500;
}

.skill-percentage {
  color: var(--color-accent-primary);
  font-weight: 600;
}

.skill-bar {
  height: 10px;
  background-color: var(--color-bg-tertiary);
  border-radius: 5px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  border-radius: 5px;
  background: linear-gradient(to right, var(--color-accent-primary), var(--color-accent-secondary));
  transition: width 1.5s ease-in-out;
}

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

.certification-card {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.certification-content h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent-primary);
}

.certification-content h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent-secondary);
}

.certification-date {
  font-size: 0.9rem;
  font-style: italic;
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

/* Contato */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}

.contact-info {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

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

.contact-item i {
  font-size: 1.5rem;
  margin-right: 1rem;
  color: var(--color-accent-primary);
}

.contact-social {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-form {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-bg-tertiary);
  border-radius: var(--border-radius-md);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(138, 43, 226, 0.2);
}

/* Footer */
footer {
  background-color: var(--color-bg-secondary);
  padding: 2rem 0;
  text-align: center;
  margin-top: 2rem;
}

/* Animações */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-text {
  opacity: 0;
  animation: fadeIn 1s ease forwards;
}

.animate-text:nth-child(1) {
  animation-delay: 0.3s;
}

.animate-text:nth-child(2) {
  animation-delay: 0.6s;
}

.animate-text:nth-child(3) {
  animation-delay: 0.9s;
}

/* Responsividade */
@media (max-width: 1024px) {
  .skills-container {
    grid-template-columns: 1fr;
  }
  
  .contact-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: 0;
    flex-direction: column;
    background-color: var(--color-bg-secondary);
    overflow: hidden;
    transition: height var(--transition-normal);
    z-index: 999;
    padding: 0;
    gap: 0;
  }
  
  .nav-links.active {
    height: calc(100vh - var(--header-height));
    padding: 2rem 0;
  }
  
  .nav-links li {
    width: 100%;
    text-align: center;
    padding: 1rem 0;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-text h2 {
    font-size: 1.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .timeline::before {
    left: 30px;
  }
  
  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    width: calc(100% - 80px);
    margin-left: 80px;
    margin-right: 0;
    text-align: left;
  }
  
  .timeline-item:nth-child(odd) .timeline-content::before,
  .timeline-item:nth-child(even) .timeline-content::before {
    left: -50px;
    right: auto;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
}