body {
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: white;
  margin: 0;
}

/* HERO */
.hero {
  text-align: center;
  padding: 60px 20px;
}

/* INFO */
.info {
  text-align: center;
  color: #94a3b8;
}

/* CALCULADORA */
.calculator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 40px;
  gap: 40px;
}

.form, .results {
  background: #1e293b;
  padding: 25px;
  border-radius: 10px;
  transition: 0.3s;
}

.form:hover, .results:hover {
  transform: translateY(-5px);
}

/* INPUTS */
input, select {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  border: none;
  border-radius: 5px;
}

/* BOTÓN */
button {
  padding: 12px;
  background: #3b82f6;
  border: none;
  color: white;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px rgba(59,130,246,0.5);
}

/* RESULTADOS */
.results {
  opacity: 0;
  transition: 0.5s;
}

.results.show {
  opacity: 1;
}

.result-box {
  background: #0f172a;
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 15px;
  text-align: center;
  border: 1px solid #334155;

  opacity: 0;
  transform: translateY(10px);
  transition: 0.5s;
}

.result-box.show {
  opacity: 1;
  transform: translateY(0);
}

.result-box p {
  font-size: 22px;
  font-weight: bold;
}

/* ERROR */
.error {
  color: #ef4444;
  font-size: 14px;
}

/* HINT */
.hint {
  text-align: center;
  color: #94a3b8;
}

/* FEATURES */
.features {
  text-align: center;
}

.features ul {
  list-style: none;
  padding: 0;
}

/* DISCLAIMER */
.disclaimer {
  text-align: center;
  font-size: 12px;
  color: #94a3b8;
  margin: 20px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .calculator {
    grid-template-columns: 1fr;
  }
}