.fce-calculator * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.fce-calculator {
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Arial, sans-serif;
}

.fce-calculator .container {
  max-width: 800px;
  margin: auto;
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,.08);
  overflow: hidden;
}

.fce-calculator .header {
  padding: 32px;
  background: linear-gradient(135deg,#2563eb,#1d4ed8);
  color: #fff;
}

.fce-calculator .header h2 {
  font-size: 26px;
  margin-bottom: 6px;
}
.fce-calculator h2
 {
    color: #eceff3;}
    
.fce-calculator .content {
  padding: 32px;
}

.input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

@media(max-width:768px){
  .input-grid { grid-template-columns:1fr; }
}

.section {
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 24px;
}

.section-title {
  font-weight: 700;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: #475569;
  margin-bottom: 6px;
}

input, select {
  width: 100%;
  padding: 10px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 14px;
}

.calculate-box {
  text-align: center;
  margin: 32px 0;
}

.calculate-btn {
  background: #16a34a;
  color: #fff;
  padding: 14px 32px;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.calculate-btn:hover {
  background: #15803d;
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media(max-width:768px){
  .results-grid { grid-template-columns:1fr; }
}

.result-card {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 16px;
}

.result-label {
  font-size: 12px;
  color: #64748b;
  margin-bottom: 6px;
}

.result-value {
  font-size: 20px;
  font-weight: 700;
}

.total-value-box {
  background: linear-gradient(135deg,#dbeafe,#cffafe);
  text-align: center;
}

.total-value {
  font-size: 30px;
  color: #0369a1;
}

canvas {
  margin-top: 24px;
}