* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background-color: #121216;
  color: #e0e0e0;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

header {
  margin-bottom: 20px;
  text-align: center;
}

header h1 {
  color: #4f46e5;
}

.card {
  background-color: #1e1e24;
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.card h2 {
  font-size: 1.25rem;
  color: #ffffff;
  border-bottom: 1px solid #3a3f58;
  padding-bottom: 8px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 0.9rem;
  color: #a0a0b0;
}

.input-group input {
  padding: 12px;
  border: 2px solid #3a3f58;
  border-radius: 8px;
  background-color: #121216;
  color: #ffffff;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.input-group input:focus {
  border-color: #4f46e5;
}

.btn-principal {
  padding: 14px;
  background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.btn-principal:active {
  transform: scale(0.98);
}

.btn-peligro {
  padding: 14px;
  background: linear-gradient(135deg, #e11d48 0%, #9f1239 100%);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.oculto {
  display: none !important;
}