/* ===== VARIÁVEIS CSS ===== */
:root {
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --text-color: #1f2937;
  --text-light: #6b7280;
  --bg-color: #ffffff;
  --bg-secondary: #f8fafc;
  --border-color: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
}

/* ===== NAVBAR MODERNA ===== */
.navegacao {
  height: 5rem;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 max(4vw, 2rem);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.logo-principal {
  font-family: 'Inter', 'Raleway', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-md);
  font-size: var(--font-size-xl);
  letter-spacing: -0.025em;
  height: 100%;
  transition: var(--transition);
}

.logo-principal:hover {
  color: var(--secondary-color);
  transform: translateY(-1px);
}

.lista-navegacao {
  list-style: none;
  display: flex;
  flex-direction: row;
  justify-content: flex-end;
  align-items: center;
  gap: var(--spacing-lg);
  margin: 0;
  padding: 0;
}

.item-navegacao {
  position: relative;
}

.link-navegacao {
  position: relative;
  font-family: 'Inter', 'Raleway', sans-serif;
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--text-color);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  transition: var(--transition);
  letter-spacing: -0.025em;
  text-decoration: none;
}

.link-navegacao:hover {
  color: var(--primary-color);
  background-color: rgba(99, 102, 241, 0.05);
  transform: translateY(-1px);
}

.link-navegacao:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Indicador ativo moderno */
.link-navegacao::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: 1px;
  transition: var(--transition);
  transform: translateX(-50%);
}

.link-navegacao:hover::after,
.link-navegacao[aria-current='page']::after {
  width: 80%;
}

/* ===== RESET E CONFIGURAÇÕES GERAIS ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: 'Inter', 'Source Sans Pro', -apple-system, BlinkMacSystemFont,
    'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--bg-color);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ===== BOTÃO HAMBÚRGUER MODERNO ===== */
.botao-menu {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  position: fixed;
  right: 1.5rem;
  top: 1.25rem;
  z-index: 2000;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.botao-menu:hover {
  background-color: rgba(99, 102, 241, 0.1);
}

.icone-hamburguer {
  display: block;
  position: relative;
  width: 1.5rem;
  height: 2px;
  background-color: var(--text-color);
  border-radius: 2px;
  transition: var(--transition);
}

.icone-hamburguer::before,
.icone-hamburguer::after {
  content: '';
  position: absolute;
  left: 0;
  width: 1.5rem;
  height: 2px;
  background-color: var(--text-color);
  border-radius: 2px;
  transition: var(--transition);
}

.icone-hamburguer::before {
  top: -6px;
}

.icone-hamburguer::after {
  bottom: -6px;
}

/* Animação do hambúrguer */
.menu-aberto .icone-hamburguer {
  background-color: transparent;
}

.menu-aberto .icone-hamburguer::before {
  transform: rotate(45deg) translate(4px, 4px);
  background-color: #fff;
}

.menu-aberto .icone-hamburguer::after {
  transform: rotate(-45deg) translate(4px, -4px);
  background-color: #fff;
}

/* ===== LOGO MOBILE ===== */
.logo-pequena {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 5rem;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  z-index: 1500;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  border-bottom: 1px solid var(--border-color);
}

.logo-pequena h2 {
  font-family: 'Inter', 'Raleway', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary-color);
  font-size: var(--font-size-lg);
  letter-spacing: -0.025em;
}

/* ===== SEÇÕES PRINCIPAIS MODERNAS ===== */
section {
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 3rem;
  position: relative;
  overflow: hidden;
}

.secao {
  position: relative;
}

.secao::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.05;
  background-size: 30px 30px;
  background-image: linear-gradient(
      to right,
      var(--primary-color) 1px,
      transparent 1px
    ),
    linear-gradient(to bottom, var(--primary-color) 1px, transparent 1px);
  pointer-events: none;
}

.conteudo-secao {
  max-width: 1200px;
  width: 100%;
  text-align: center;
  z-index: 1;
  position: relative;
}

.titulo-secao {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color),
    var(--accent-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.subtitulo-secao {
  font-size: var(--font-size-xl);
  color: var(--text-light);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Seção Início - Hero */
.um {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.um .titulo-secao {
  -webkit-text-fill-color: white;
  background: none;
}

.um .subtitulo-secao {
  color: rgba(255, 255, 255, 0.9);
}

/* Seção Sobre */
.dois {
  background: var(--bg-secondary);
}

/* Seção Habilidades */
.tres {
  background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

/* Seção Projetos */
.quatro {
  background: var(--bg-color);
}

/* Seção Contato */
.cinco {
  background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

/* Cards para conteúdo */
.card {
  background: white;
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  margin: var(--spacing-lg);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

.habilidade {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.habilidade:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.icone-habilidade {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.nome-habilidade {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-color);
}
/* ===== RESPONSIVIDADE ===== */
@media (max-width: 768px) {
  .logo-principal {
    display: none;
  }

  .logo-pequena {
    display: flex;
  }

  .botao-menu {
    display: block;
  }

  .navegacao {
    position: fixed;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(30, 41, 59, 0.98);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: center;
    transition: var(--transition);
    padding-top: 5rem;
  }

  .navegacao.menu-aberto {
    left: 0;
  }

  .lista-navegacao {
    flex-direction: column;
    gap: var(--spacing-2xl);
    text-align: center;
    width: 100%;
  }

  .link-navegacao {
    color: white;
    font-size: var(--font-size-xl);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    transition: var(--transition);
  }

  .link-navegacao:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
  }

  .link-navegacao::after {
    background: white;
  }

  section {
    padding: 5rem 1rem 2rem;
  }

  .titulo-secao {
    font-size: clamp(1.5rem, 8vw, 2.5rem);
  }

  .grid-habilidades {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* Scroll lock */
body.menu-aberto {
  overflow: hidden;
}

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

:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ===== TEMA ESCURO ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --text-color: #f1f5f9;
    --text-light: #94a3b8;
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --border-color: #334155;
  }

  .navegacao {
    background: rgba(15, 23, 42, 0.95);
    border-bottom-color: var(--border-color);
  }

  .logo-pequena {
    background: rgba(15, 23, 42, 0.95);
    border-bottom-color: var(--border-color);
  }

  .card,
  .habilidade {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
  }

  .icone-hamburguer,
  .icone-hamburguer::before,
  .icone-hamburguer::after {
    background-color: var(--text-color);
  }
}

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

.conteudo-secao {
  animation: fadeInUp 0.6s ease-out;
}

/* ===== SCROLL SMOOTH MELHORADO ===== */
html {
  scroll-padding-top: 5rem;
}

/* ===== UTILIDADES ===== */
.texto-gradiente {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.botao-primario {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.botao-primario:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}