.interest-calculator {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 8px 0 36px;
}

.calculator-header {
  margin-bottom: 28px;
}

.interest-calculator .calculator-title {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  color: #111827;
}

.interest-calculator .calculator-subtitle {
  font-size: 12px;
  line-height: 1.5;
  color: #6b7280;
}

.interest-calculator .calculator-section {
  margin-bottom: 24px;
  padding: 16px;
  border-radius: 20px;
  border: 1px solid rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.72);
}

.interest-calculator .section-title {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 700;
  color: #374151;
}

.interest-calculator .subsection-title {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 600;
  color: #4b5563;
}

.input-field,
.select-field,
.date-field {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  margin-bottom: 16px;
  min-width: 0;
}

.input-field:last-child,
.select-field:last-child,
.date-field:last-child {
  margin-bottom: 0;
}

.interest-calculator .input-label,
.interest-calculator .select-label,
.interest-calculator .date-label {
  display: block;
  margin-bottom: 4px;
  min-height: 0;
  font-size: 12px;
  font-weight: 600;
  color: #4b5563;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.interest-calculator .input-control,
.interest-calculator .select-control,
.interest-calculator .date-control {
  width: 100%;
  height: 44px;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.92);
  font-size: 12px;
  line-height: 44px;
  color: #1f2937;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.interest-calculator .input-control:focus,
.interest-calculator .select-control:focus,
.interest-calculator .date-control:focus {
  border-color: rgba(52, 199, 89, 0.28);
  box-shadow: 0 0 0 3px rgba(52, 199, 89, 0.12);
}

.interest-calculator .input-control:disabled,
.interest-calculator .select-control:disabled,
.interest-calculator .date-control:disabled {
  color: #9ca3af;
  background: rgba(249, 250, 251, 0.9);
  cursor: not-allowed;
}

.interest-calculator .interest-grid-row {
  display: grid;
  gap: 14px;
  align-items: start;
  width: 100%;
}

.interest-calculator .interest-grid-row-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.interest-calculator .interest-grid-row-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.interest-calculator .interest-grid-row-1 {
  grid-template-columns: minmax(0, 1fr);
}

.interest-advanced-section {
  margin-bottom: 24px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.interest-advanced-summary {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  cursor: pointer;
  list-style: none;
}

.interest-advanced-summary::-webkit-details-marker {
  display: none;
}

.interest-calculator .interest-advanced-title {
  font-size: 13px;
  font-weight: 700;
  color: #374151;
}

.interest-advanced-body {
  display: grid;
  gap: 14px;
  margin-top: 12px;
}

.interest-advanced-inline {
  margin-bottom: 0;
  margin-top: 4px;
}

.interest-advanced-helper {
  padding: 10px 12px;
  border: 1px solid rgba(15, 23, 42, 0.05);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
}

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

.radio-group:last-child {
  margin-bottom: 0;
}

.interest-calculator .radio-group-label {
  margin-bottom: 10px;
  font-size: 11px;
  font-weight: 600;
  color: #4b5563;
}

.radio-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 8px;
}

.radio-option input[type="radio"] {
  margin: 0;
  accent-color: #34c759;
}

.interest-calculator .radio-label {
  font-size: 11px;
  color: #374151;
  cursor: pointer;
}

.interest-calculator .rate-input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.rate-input-row:last-child {
  margin-bottom: 0;
}

.interest-calculator .date-range-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.interest-calculator .info-message {
  padding: 12px 16px;
  margin-bottom: 16px;
  border-radius: 12px;
  background: rgba(52, 199, 89, 0.08);
  border: 1px solid rgba(52, 199, 89, 0.12);
  font-size: 11px;
  line-height: 1.5;
  color: #166534;
}

.result-section,
.calculation-details {
  margin-bottom: 24px;
  padding: 20px;
  border-radius: 20px;
  border: 1px solid rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.72);
}

.result-header,
.details-header {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
  color: #374151;
}

.result-content {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-default-message {
  font-size: 14px;
  color: #9ca3af;
  text-align: center;
}

.result-error {
  padding: 16px;
  border-radius: 12px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.12);
  font-size: 14px;
  color: #dc2626;
  text-align: center;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
}

.result-item {
  padding: 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.result-item.total {
  background: rgba(52, 199, 89, 0.08);
  border-color: rgba(52, 199, 89, 0.12);
}

.result-item-label {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-item-value {
  font-size: 20px;
  font-weight: 700;
  color: #111827;
}

.result-item.total .result-item-value {
  color: #166534;
}

.details-list {
  display: grid;
  gap: 12px;
}

.details-item {
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.details-item.segment {
  background: rgba(249, 250, 251, 0.92);
}

.details-item-label {
  margin-bottom: 4px;
  font-size: 13px;
  font-weight: 600;
  color: #4b5563;
}

.details-item-value {
  font-size: 13px;
  line-height: 1.5;
  color: #6b7280;
}

.details-section-header {
  margin: 8px 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: #374151;
}

@media (max-width: 768px) {
  .calculator-section {
    padding: 16px;
  }

  .interest-grid-row-3 {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .result-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .rate-input-row,
  .date-range-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .radio-options {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .calculator-title {
    font-size: 20px;
  }

  .section-title {
    font-size: 15px;
  }

  .result-item-value {
    font-size: 18px;
  }
}