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

body {
  font-family: 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: #f0f4f8;
  color: #333;
  padding-top: 120px;
}
.anuncio{
  text-align: center;

  background: linear-gradient(135deg, #e3f2fd, #ffffff); /* Azul claro com branco */
  color: #0d47a1; /* Azul escuro para o texto */
  border-left: 5px solid #2196f3; /* Faixa azul lateral */
  padding: 15px 20px;
  margin: 20px 0;
  border-radius: 10px;
  font-size: 12px;
  font-family: 'Segoe UI', sans-serif;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);

}

.menu {
  background: linear-gradient(90deg, #2196f3, #00bcd4);
  color: white;
  padding: 20px;
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
}

.logo {
 background: linear-gradient(135deg, #2196f3, #4caf50);
  color: #2196f3;
  border-radius: 50%;
  width: 80px;
  height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-weight: bold;
  font-size: 0.8rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.logo .turma { color:azure; }
.logo .bili { color: #ffd700; }
.logo .boane { color: #00ffff; }

.titulo h1 {
  font-size: 1.8rem;
}

main {
  max-width: 1000px;
  margin: auto;
  padding: 20px;
}

.nicho, .brevemente {
  text-align: center;
  margin: 30px 0 20px;
  font-size: 1.6rem;
  color: #444;
}

.conteudo, .outros {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}
a{
  text-decoration: none;
}

.matematica, .portugues, .fisica, .quimica {
  background: white;
  border-radius: 12px;
  padding: 20px;
  width: 200px;
  height: 120px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 6px 10px rgba(0,0,0,0.1);
  font-weight: bold;
  transition: transform 0.2s ease;
}

.matematica:hover, .portugues:hover, .fisica:hover, .quimica:hover {
  transform: translateY(-5px);
}

.matematica { border-top: 5px solid #2196f3; }
.portugues { border-top: 5px solid #9c27b0; }
.fisica { border-top: 5px solid #ff9800; }
.quimica { border-top: 5px solid #4caf50; }

footer {
  background: #00000018;
  padding: 20px;
  text-align: center;
  margin-top: 40px;
}

.social-icons {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  gap: 25px;
}

.social-icons a {
   color: #333;
  font-size: 28px;
 
  transition: transform 0.3s, color 0.3s;
}

.social-icons a:hover {
  transform: scale(1.2);
}

.fa-facebook-square { color: #3b5998; }
.fa-whatsapp-square { color: #25d366; }
.fa-youtube-square { color: #ff0000; }

@media (max-width: 600px) {
  .menu {
    flex-direction: column;
    text-align: center;
  }

  .logo {
    width: 60px;
    height: 60px;
    font-size: 0.7rem;
    margin-bottom: 10px;
  }
}