/* === RESET GENERAL === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background: #f4f6f7;
  color: #37474f;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

/* === CONTENEDOR PRINCIPAL === */
#panel {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.1);
  padding: 30px 40px;
  text-align: center;
  width: 90%;
  max-width: 500px;
}

/* === TITULO === */
.form-titulo {
  background: #2e7d32;
  color: #fff;
  padding: 15px;
  border-radius: 12px;
  margin-bottom: 25px;
  font-size: 26px;
  font-weight: bold;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

/* === ICONOS DE REDES === */
#panel a img {
  margin: 0 10px 20px 10px;
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

#panel a img:hover {
  transform: scale(1.1);
}

/* === BOTONES === */
.btn-enviar {
  display: block;
  background: linear-gradient(135deg, #2e7d32, #1b5e20);
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  border-radius: 10px;
  padding: 12px 20px;
  margin: 10px auto;
  width: 80%;
  text-align: center;
  transition: all 0.3s ease;
}

.btn-enviar:hover {
  background: linear-gradient(135deg, #388e3c, #2e7d32);
  transform: translateY(-2px);
}

/* === RESPONSIVE === */
@media screen and (max-width: 600px) {
  #panel {
    padding: 20px;
  }

  .form-titulo {
    font-size: 22px;
  }

  .btn-enviar {
    width: 100%;
    padding: 10px;
    font-size: 14px;
  }
}