/* ===================== Reset e Base ===================== */
html {
  height: 100%;
  /* garante que o elemento HTML ocupe toda a altura */
}

body {
  margin: 0;
  /* remove margens padrão */
  font-family: sans-serif;
  /* fonte padrão sem serifa */
  min-height: 100vh;
  /* altura mínima de toda a tela */

  /* fundo em gradiente radial animado */
  background: radial-gradient(circle at center, #001a1a, #000010, #000000);
  animation: pulse 6s infinite alternate;
  /* animação suave */
}

/* Animação para o fundo "pulsar" entre tons */
@keyframes pulse {
  0% {
    background: radial-gradient(circle at center, #001a1a, #000010, #000000);
  }

  100% {
    background: radial-gradient(circle at center, #002b2b, #000020, #000000);
  }
}

main {
  min-height: 100vh;
  /* força o conteúdo ocupar toda a altura da tela */
}

/* ===================== Header / Navbar ===================== */
.header {
  position: relative;
  z-index: 1000;
  /* fica acima do fundo */
}

.nav {
  max-width: 1280px;
  /* largura máxima */
  margin: 0 auto;
  /* centraliza */
  display: flex;
  /* flexbox para organizar itens */
  justify-content: space-between;
  /* espaço entre logo e menu */
  align-items: center;
  /* centraliza verticalmente */
  padding: 10 16px;

  /* efeito de vidro (glassmorphism) */
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1000;
}

.logo {
  text-decoration: none;
  /* sem sublinhado */
  list-style: none;
  font-family: 'Press Start 2P', sans-serif;
  /* fonte retrô */
  font-size: 2rem;
  color: #00ff7f;
  /* verde neon */
  text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
  /* sombra para destaque */
  white-space: nowrap;
  /* evita quebra de linha */
  border-right: 2px solid #00ff7f;
  /* efeito cursor */
  overflow: hidden;
  animation: blink 1s step-start infinite;
  /* piscar do "cursor" */
}

/* Animação do "cursor piscando" */
@keyframes blink {

  0%,
  50%,
  100% {
    border-color: #00ff7f;
  }

  25%,
  75% {
    border-color: transparent;
  }
}

.nav-list {
  display: flex;
  /* menu em linha */
  gap: 24px;
  /* espaçamento entre itens */
  list-style: none;
  /* remove marcadores */
}

.nav-list li a {
  color: white;
  font-size: 16px;
  padding: 6px 12px;
  border-radius: 6px;
  text-decoration: none;
  transition: 0.3s ease;
  /* efeito suave */
}

/* ===================== Hover uniforme navbar ===================== */
.nav-list li a:hover,
.dropdown-menu a:hover {
  color: #00ff36;
  /* verde claro */
  text-shadow: 0 0 8px #00ff36, 0 0 15px #00ff36;
  background-color: rgba(0, 255, 56, 0.1);
  /* leve fundo */
  box-shadow: 0 0 10px #00ff36, 0 0 20px #00ff36;
  /* brilho neon */
}

/* ===================== Dropdown ===================== */
.dropdown {
  position: relative;
  /* necessário para posicionar o submenu */
}

.dropdown-menu {
  list-style: none;
  display: none;
  /* escondido por padrão */
  position: absolute;
  /* posiciona abaixo */
  top: 100%;
  left: 0;
  min-width: 180px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  border-radius: 8px;
  padding: 8px 0;
  z-index: 1100;
}

.dropdown-menu a {
  display: block;
  padding: 8px 16px;
  color: white;
  font-size: 14px;
}

.dropdown:hover .dropdown-menu {
  display: block;
  /* mostra submenu ao passar mouse */
}

/* ===================== Menu Hamburguer ===================== */
.hamburguer {
  display: none;
  /* só aparece em telas menores */
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1200;
}

/* barras do hamburguer */
.hamburguer span,
.hamburguer::before,
.hamburguer::after {
  content: "";
  display: block;
  width: 30px;
  height: 3px;
  background: #fff;
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: 0.3s;
}

.hamburguer::before {
  top: 0;
}

.hamburguer span {
  top: 10px;
}

.hamburguer::after {
  top: 20px;
}

/* ===================== Canvas partículas ===================== */
#particles {
  position: fixed;
  /* cobre a tela toda */
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 800;
  /* atrás do menu */
  pointer-events: none;
  /* não interfere no clique */
}

/* ===================== Mobile ===================== */
@media (max-width: 768px) {
  .hamburguer {
    display: block;
    /* aparece no mobile */
    position: relative;
    z-index: 1500;
    /* acima do menu */
  }

  .nav-list {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    flex-direction: column;
    /* menu em coluna */
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    clip-path: circle(0 at 90% -10%);
    /* menu fechado (invisível) */
    transition: 0.5s ease-in-out;
    pointer-events: none;
    gap: 24px;
    z-index: 1100;
  }

  /* menu ativo abre em "explosão circular" */
  .nav.active .nav-list {
    clip-path: circle(1500px at 90% -10%);
    pointer-events: all;
  }

  .nav-list li a {
    font-size: 24px;
    text-align: center;
  }

  /* Dropdown dentro do menu mobile */
  .dropdown-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    text-align: center;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    padding: 8px 0;
    z-index: 1200;
  }

  .dropdown.active .dropdown-menu {
    display: flex;
    /* aparece ao clicar */
  }
}

/* ===================== Footer ===================== */
footer {
  background: rgba(0, 0, 0, 0.4);
  color: #00ffc8;
  /* verde ciano */
  text-align: center;
  padding: 15px 0;
  font-size: 14px;
  backdrop-filter: blur(4px);
}