@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&family=Roboto+Slab:wght@500&display=swap');

#wp-concrete-calculator * {
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

#wp-concrete-calculator {
  background: #eef2f7;
  padding: 30px;
}

.calculator-container {
  background: #ffffff;
  padding: 40px 30px;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  max-width: 980px;
  margin: 0 auto;
}

.calculator-header {
  text-align: center;
  margin-bottom: 30px;
}

.calculator-header h2 {
  margin: 0;
  font-size: 28px;
  font-family: 'Roboto Slab', serif;
  color: #222;
}

/* Input Group */
.input-group {
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #333;
  font-size: 15px;
}

.input-group input,
.input-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 14px;
  transition: border 0.3s ease;
}

.input-group input:focus,
.input-group select:focus {
  border-color: #007bff;
  outline: none;
}

/* Radio Buttons */
.radio-group {
  display: flex;
  gap: 25px;
  align-items: center;
}

.radio-group label {
  display: flex;
  align-items: center;
  font-weight: 500;
  font-size: 14px;
  color: #444;
}

.radio-group input[type="radio"] {
  margin-right: 8px;
  width: 18px;
  height: 18px;
}

/* Flex Group for Length/Width/Height */
.flex-group {
  display: flex;
  gap: 15px;
}

.flex-group > div {
  flex: 1;
}

/* Button */
.btn {
  margin-top: 10px;
  width: 100%;
  padding: 14px;
  background: linear-gradient(to right, #007bff, #0056b3);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.btn:hover {
  background: linear-gradient(to right, #0056b3, #004494);
}

/* Results Section */
.results-container {
  margin-top: 30px;
  background: #e8f5e9;
  padding: 20px;
  border-radius: 8px;
  border-left: 6px solid #43a047;
  font-size: 15px;
}

.results-container h3 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 600;
  color: #2e7d32;
  font-family: 'Roboto Slab', serif;
}

#dryVolume {
  font-size: 17px;
  color: #111;
  margin-top: 5px;
}

/* Table Styling */
.table-results {
  width: 100%;
  margin-top: 15px;
  border-collapse: collapse;
  font-size: 14px;
}

.table-results th,
.table-results td {
  padding: 12px 10px;
  border-bottom: 1px solid #ddd;
  text-align: left;
}

.table-results th {
  background-color: #43a047;
  color: #fff;
  font-weight: 600;
}

.table-results td {
  color: #333;
}

/* Chart Styling */
.chart-container {
  margin-top: 25px;
  text-align: center;
}

.chart-container canvas {
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}


/* Layout and keyboard accessibility */
*, *::before, *::after { box-sizing: border-box; }
.project-intro, .project-notes { max-width: 980px; margin: 24px auto; padding: 16px; font-family: Arial, sans-serif; line-height: 1.6; }
img { max-width: 100%; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible { outline: 3px solid #1662aa; outline-offset: 3px; }
.flex-group > * { min-width: 0; }
.toggle-group button { color: #222; }
@media (max-width: 600px) {
  body { padding: 8px; }
  #wp-concrete-calculator { padding: 8px; }
  .calculator-container { padding: 20px 12px; }
  .flex-group, .radio-group { flex-direction: column; align-items: stretch; }
  .table-results th, .table-results td { padding: 8px 4px; overflow-wrap: anywhere; }
  .results-container { padding: 12px; }
}