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

body {
  font-family: 'Times New Roman', Times, serif;
  background: #f2f5f8;
  color: #222;
  line-height: 1.6;
  padding-top: 150px; /* espaço para navbar fixa */
}

/* Navbar */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #004a99;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  z-index: 1000;
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 5px 15px;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: bold;
  font-size: 1.8rem;
  color: #fff;
}

.logo-img {
  width: 100px;
  height: auto;
}

.school-name {
  font-size: 1.6rem;
  font-weight: bold;
  color: #fff;
  letter-spacing: 1px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 18px;
}

.nav-links li a {
  color: #ddd;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.nav-links li a:hover {
  color: #fff;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}
.hamburger span {
  display: block;
  height: 3px;
  width: 25px;
  background: #fff;
  border-radius: 2px;
}

/* Main content */
main {
  max-width: 1000px;
  margin: 0 auto 50px;
  padding: 0 15px;
}

.item {
  display: flex;
  flex-direction: column-reverse; /* texto em cima, imagens embaixo */
  align-items: center;
  justify-content: center;
  margin-bottom: 60px;
  gap: 20px;
  background: #fff;
  border-radius: 8px;
  padding: 25px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
  will-change: transform, opacity;
  text-align: center;
}

.item.visible {
  opacity: 1;
  transform: translateY(0);
}

.item img {
  width: 320px;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  flex-shrink: 0;
}

.text {
  max-width: 700px;
  margin: 0 auto;
}

.text h2 {
  color: #004a99;
  margin-bottom: 12px;
  font-size: 1.8rem;
}

.text p {
  font-size: 1.1rem;
  color: #333;
  line-height: 1.5;
}

/* ===============================
   Image gallery ajustada
   =============================== */
.image-gallery {
  display: flex;
  flex-wrap: wrap; /* Permite que quebrem a linha no mobile */
  gap: 10px; /* Espaço entre as imagens */
  justify-content: center; /* Centraliza as imagens */
}

.image-gallery img {
  width: 200px; /* Largura padrão, ajustável */
  height: auto;
  object-fit: cover; /* Mantém proporção da imagem */
}

/* Media query para mobile */
@media (max-width: 600px) {
  .image-gallery img {
    width: 45%; /* Ocupa menos espaço para caber na tela pequena */
  }
}

.image-gallery img:hover {
  transform: scale(1.05); /* efeito leve ao passar o mouse */
}

/* Botão voltar ao topo */
#topBtn {
  position: fixed;
  bottom: 35px;
  right: 35px;
  display: none;
  background: #004a99;
  color: white;
  border: none;
  padding: 15px 18px;
  font-size: 22px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(0,0,0,0.2);
  transition: background 0.3s ease;
  z-index: 1001;
}

#topBtn:hover {
  background: #002f60;
}

/* Footer */
footer {
  background: #004a99;
  color: #ddd;
  text-align: center;
  padding: 18px 15px;
  font-size: 1rem;
  letter-spacing: 0.03em;
}

/* Responsividade */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-links {
    flex-direction: column;
    width: 100%;
    display: none;
    margin-top: 10px;
  }
  .nav-links.active {
    display: flex;
  }
  .hamburger {
    display: flex;
  }
  .item {
    flex-direction: column-reverse; /* mantém texto em cima no mobile também */
  }
  .item img {
    width: 100%;
    height: auto;
  }
  .text {
    max-width: 100%;
  }
  .image-gallery {
    justify-content: center;
  }
}

/* Evitar scroll quando lightbox aberto */
body.no-scroll {
  overflow: hidden;
}

/* Lightbox */
#image-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.8);
  justify-content: center; align-items: center;
  z-index: 2000;
}
#image-overlay img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}
#image-overlay button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  user-select: none;
}
#image-overlay button#prev { left: 30px; }
#image-overlay button#next { right: 30px; }