:root {
  --background-color: #f5f5f5;
  --text-color: #333;
  --card-background: #fff;
  --border-color: #ddd;
  --input-background: #fff;
  --input-border: #ccc;
  --button-background: #4CAF50;
  --button-color: white;
  --link-color: #0077cc;
  --warning-background: #fff3cd;
  --warning-color: #856404;
  --critical-background: #f8d7da;
  --critical-color: #721c24;
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --success-color: #2ecc71;
  --warning-color: #f39c12;
  --border-radius: 8px;
  --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --background-color: #121212;
  --text-color: #e0e0e0;
  --card-background: #1e1e1e;
  --border-color: #444;
  --input-background: #2d2d2d;
  --input-border: #555;
  --button-background: #388e3c;
  --button-color: #f0f0f0;
  --link-color: #58a6ff;
  --warning-background: #332d00;
  --warning-color: #ffeb99;
  --critical-background: #3c1314;
  --critical-color: #ffb3b8;
}

/* Apply variables to elements */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  padding: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

.card {
  background-color: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 2rem;
  margin-bottom: 2rem;
  border-color: var(--border-color);
}

.header {
  text-align: center;
  margin-bottom: 2rem;
}

.header h1 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.header p {
  color: var(--secondary-color);
  font-size: 1rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group:not(:last-child) {
  border-bottom: 1px solid #eee;
  padding-bottom: 1.5rem;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0;
  min-width: 120px;
}

input[type="number"],
input[type="text"],
select {
  width: auto;
  flex: 1;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: border-color 0.3s;
  background-color: var(--input-background);
  border-color: var(--input-border);
  color: var(--text-color);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  border-color: var(--primary-color);
  outline: none;
}

input[type="radio"],
input[type="checkbox"] {
  margin-right: 0.5rem;
}

.imperial-inputs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: nowrap;
  align-items: center;
  flex: 1;
  width: 100%;
}

.imperial-inputs input {
  width: 100px;
  min-width: 0;
  flex: 0 1 auto;
}


.imperial-inputs input::placeholder {
  font-size: 0.9rem;
}

.imperial-inputs label {
  min-width: auto;
  margin-right: 1rem;
  flex: 0 0 auto;
}

.btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s;
  width: 100%;
  font-weight: 600;
  background-color: var(--button-background);
  color: var(--button-color);
}

.btn:hover {
  background-color: #2980b9;
}

.slider-container {
  width: 100%;
}

.slider {
  width: 100%;
  margin: 1rem 0;
}

.info {
  color: #777;
  font-size: 0.85rem;
  margin-left: 0.5rem;
}

.warning {
  color: var(--warning-color);
  font-size: 0.85rem;
  background-color: var(--warning-background);
}

.critical {
  color: var(--accent-color);
  font-size: 0.85rem;
  padding: 1rem;
  border-radius: var(--border-radius);
  background-color: rgba(231, 76, 60, 0.1);
  margin-bottom: 1.5rem;
  background-color: var(--critical-background);
  color: var(--critical-color);
}

.result-group {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #eee;
}

.result-group:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.result-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.result-label {
  font-weight: 600;
}

.result-value {
  font-weight: 500;
  color: var(--primary-color);
}

.result-value-container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  text-align: right;
}

.footer {
  text-align: center;
  font-size: 0.9rem;
  color: #777;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid #eee;
}

a {
  color: var(--link-color);
}

@media (max-width: 768px) {
  .card {
    padding: 1.5rem;
  }

  .form-row {
    flex-direction: column;
    align-items: stretch;
  }

  .imperial-inputs {
    flex-direction: row;
    margin-top: 0.5rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .card {
    padding: 1rem;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}