:root {
  --fundo: #0a0a0a;
  --fundo-secundario: #111111;
  --texto: #ffffff;
  --texto-secundario: #b3b3b3;
  --acento: #3b82f6;
  --acento-hover: #2563eb;
  --gradiente: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradiente-card: linear-gradient(145deg, #1a1a1a 0%, #2d2d2d 100%);
  --sombra: 0 10px 30px rgba(0, 0, 0, 0.5);
  --sombra-hover: 0 20px 40px rgba(59, 130, 246, 0.3);
  --border-radius: 16px;
  --border-radius-sm: 8px;
}

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

html {
  scroll-behavior: smooth;
}

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

/* Scrollbar personalizada */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--fundo-secundario);
}

::-webkit-scrollbar-thumb {
  background: var(--acento);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--acento-hover);
}

/* NAVEGAÇÃO */

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px 0;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  transition: all 0.3s ease;
  transform: translateY(0);
}

.navbar.nav-hidden {
  transform: translateY(-100%);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo span {
  font-size: 1.8em;
  font-weight: 700;
  background: var(--gradiente);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 40px;
}

.nav-link {
  color: var(--texto-secundario);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95em;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradiente);
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--texto);
  text-decoration: none;
}

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background-color: var(--texto);
  margin: 3px 0;
  transition: 0.3s;
  border-radius: 2px;
}

@media screen and (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 20px 0;
    gap: 20px;
  }

  .nav-menu.active {
    left: 0;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* HERO */

#hero {
  background: linear-gradient(135deg, rgba(16, 16, 16, 0.9), rgba(30, 30, 30, 0.8)),
              url('https://images.unsplash.com/photo-1517180102446-f3ece451e9d8?auto=format&fit=crop&w=1650&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-overlay {
  background: var(--gradiente-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 60px 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--sombra);
  max-width: 600px;
  margin: 0 20px;
  animation: fadeInUp 1s ease-out;
}

#hero h1 {
  font-size: 3.5em;
  font-weight: 700;
  background: var(--gradiente);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  line-height: 1.2;
}

#hero p {
  font-size: 1.3em;
  color: var(--texto-secundario);
  margin-top: 15px;
  font-weight: 400;
}

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

/* SECTIONS */

section {
  padding: 80px 20px;
  max-width: 1000px;
  margin: auto;
  border-bottom: 1px solid #2a2a2a;
}

section:last-of-type {
  border-bottom: none;
}

h2 {
  margin-bottom: 30px;
  font-size: 2.5em;
  background: var(--gradiente);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--gradiente);
  border-radius: 2px;
}

p {
  margin-bottom: 20px;
  font-size: 1.1em;
  color: var(--texto-secundario);
  line-height: 1.8;
}

/* SKILLS */

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  list-style: none;
}

.skills-list li {
  background: var(--gradiente-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 20px;
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--texto);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.skills-list li:hover {
  transform: translateY(-2px);
  box-shadow: var(--sombra-hover);
  border-color: var(--acento);
}

/* PROJETOS */

.projetos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.projeto-card {
  background: var(--gradiente-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--sombra);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.projeto-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradiente);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.projeto-card:hover::before {
  transform: scaleX(1);
}

.projeto-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--sombra-hover);
  border-color: var(--acento);
}

.projeto-card h3 {
  margin-bottom: 15px;
  font-size: 1.3em;
  color: var(--texto);
  font-weight: 600;
}

.projeto-card p {
  margin-bottom: 20px;
  color: var(--texto-secundario);
  line-height: 1.6;
}

.projeto-card a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--acento);
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  font-size: 0.9em;
  transition: all 0.3s ease;
}

.projeto-card a:hover {
  background: var(--acento-hover);
  transform: translateY(-2px);
  text-decoration: none;
}

a {
  color: var(--acento);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* RESPONSIVIDADE */

@media (max-width: 768px) {
  #hero h1 {
    font-size: 2.5em;
  }
  
  #hero p {
    font-size: 1.1em;
  }
  
  .hero-overlay {
    padding: 40px 30px;
  }
  
  h2 {
    font-size: 2em;
  }
  
  section {
    padding: 60px 20px;
  }
  
  .projetos-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .skills-list {
    gap: 8px;
  }
  
  .skills-list li {
    font-size: 13px;
    padding: 10px 16px;
  }
}

@media (max-width: 480px) {
  #hero h1 {
    font-size: 2em;
  }
  
  .hero-overlay {
    padding: 30px 20px;
    margin: 0 10px;
  }
  
  .nav-container {
    padding: 0 15px;
  }
}

/* ANIMAÇÕES ADICIONAIS */

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.projeto-card:hover h3 {
  animation: pulse 0.6s ease-in-out;
}

/* MELHORIAS VISUAIS */

.skills-list li i {
  margin-right: 8px;
  color: var(--acento);
}

#contacto {

  text-align: center;
  background: var(--gradiente-card);
  border-radius: var(--border-radius);
  margin: 40px 15%;
  padding: 60px 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

#contacto h2 {
  margin-bottom: 25px;
}

#contacto p {
  font-size: 1.2em;
  margin-bottom: 0;
}