/* Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Body Styling */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #121212;
  color: #333;
  padding: 20px;
}

/* Container */
.container {
  max-width: 900px;
  margin: auto;
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.05);
}

/* Headings */
h1, h2, h3, h5 {
  text-align: center;
  margin-bottom: 1px;
}

/* Form Inputs */
form .input-group,
form fieldset {
  margin-bottom: 20px;
}

.input-group label,
fieldset label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}

.input-group input,
.input-group select,
fieldset input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
  margin-top: 5px;
}

/* Fieldset Styling */
fieldset {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 15px;
}

fieldset legend {
  font-weight: bold;
  padding: 0 10px;
}

/* Submit Button */
button[type="submit"] {
  background-color: #2d89e5;
  color: white;
  font-weight: bold;
  border: none;
  padding: 14px 20px;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  display: block;
  width: 100%;
  margin-top: 10px;
  transition: background-color 0.3s ease;
}

button[type="submit"]:hover {
  background-color: #1e6fc1;
}

/* Results */
.results {
  background-color: #eef2f5;
  border-radius: 10px;
  padding: 20px;
  margin-top: 30px;
}

.results p {
  margin-bottom: 12px;
  font-size: 1.05rem;
}

.results .net {
  font-size: 1.2rem;
  font-weight: bold;
  color: #218739;
}

/* Ad Placeholders */
.ad {
  background-color: #dbe9ff;
  color: #555;
  padding: 20px;
  text-align: center;
  border: 1px dashed #aac;
  margin: 30px 0;
  border-radius: 8px;
  font-style: italic;
  font-size: 0.9rem;
}

/* Hide result until ready */
.hidden {
  display: none;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 20px;
  }

  .input-group label,
  fieldset label {
    font-size: 0.95rem;
  }

  input, select {
    font-size: 0.95rem;
  }

  button[type="submit"] {
    padding: 12px;
    font-size: 1rem;
  }
}