* {
  box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
}

body {
  margin: 0;
  background: linear-gradient(135deg, #0d1b2a, #1b263b);
  color: #f0f0f0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  width: 70%;
  max-width: 600px;
  text-align: center;
  background-color: rgba(27, 38, 59, 0.95);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: 0 0 35px rgba(255, 217, 0, 0.2), 0 0 60px rgba(0, 0, 0, 0.6);
  border: 2px solid #f0c040;
  position: relative;
  overflow: hidden;
}

header h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 3px;
  color: #fffbe6;
  text-shadow: 0 0 8px rgba(255, 255, 200, 0.5);
}

.subtitle {
  font-size: 1rem;
  margin-top: 0.3rem;
  color: #dcdcdc;
}

.decorative-bar {
  margin: 1.5rem auto;
  width: 80%;
  height: 6px;
  background: linear-gradient(
    45deg,
    #f0c040 0%,
    #f5deb3 25%,
    #f0c040 50%,
    #d4af37 75%,
    #f0c040 100%
  );
  background-size: 40px 6px;
  border-radius: 4px;
  animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 80px 0;
  }
}

main input {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  border: 1px solid #f0c040;
  border-radius: 12px;
  resize: none;
  background-color: #324a68;
  color: #fff;
  margin-bottom: 1.5rem;
  margin-top: 1.5rem;
  box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.1);
}

main button {
  padding: 0.8rem 2rem;
  font-size: 1rem;
  border: none;
  border-radius: 999px;
  background: linear-gradient(to right, #f0c040, #f7c948);
  color: #1b263b;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(240, 192, 64, 0.4);
}
.boton {
  padding: 0.8rem 2rem;
  font-size: 1rem;
  border: none;
  border-radius: 999px;
  background: linear-gradient(to right, #f0c040, #f7c948);
  color: #1b263b;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(240, 192, 64, 0.4);
}

main button:hover {
  background: linear-gradient(to right, #ffe066, #f0c040);
  transform: scale(1.05);
}

.output {
  margin-top: 1.2rem;
  font-size: 1.2rem;
  color: #ffe599;
  font-weight: bold;
  text-shadow: 0 0 4px rgba(255, 255, 150, 0.4);
}

.minibtn {
  width: 0em;
  height: 2.5em;
  font-size: 1rem;
  margin-top: 0.8rem;
}