body {
  background: #0d0d0d;
  color: #fff;
  font-family: 'Segoe UI', sans-serif;
}

.card {
  background: #1a1a1a;
  border: none;
  border-radius: 15px;
  box-shadow: 0 0 25px rgba(255, 0, 0, 0.1);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px rgba(255, 0, 0, 0.2);
}

.form-control,
.form-select {
  background: #111;
  border: 1px solid #333;
  color: #fff;
}

.form-control:focus,
.form-select:focus {
  border-color: #ff0000;
  box-shadow: 0 0 10px rgba(255, 0, 0, 0.3);
  background: #111;
  color: #fff;
}

.form-control::placeholder {
  color: #777;
}

.is-valid {
  border-color: #00c851 !important;
}

.is-invalid {
  border-color: #ff4444 !important;
}

.form-label {
  font-weight: 500;
  color: #ffffff;
}

.form-check-label {
  color: #ffffff;
}

.section-title {
  border-left: 4px solid #ff0000;
  padding-left: 10px;
  margin-bottom: 15px;
  font-weight: bold;
  font-size: 20px;
  letter-spacing: 0.5px;
  color: #ffffff;
}

.text-muted {
  color:#ffffff important!;
}

.btn-red {
  background: #ff0000;
  border: none;
  transition: 0.3s;
  color: #fff;
}

.btn-red:hover {
  background: #cc0000;
  transform: scale(1.05);
}

#result .alert {
  border-radius: 10px;
}

@media (max-width: 768px) {
  .card {
    margin-bottom: 20px;
  }
}