.sfc-calculator {
  --sfc-accent-color: #ff6a00;
  --sfc-text-color: #1f2937;
  --sfc-muted-text: #6b7280;
  --sfc-border-color: #d6d9de;
  --sfc-panel-bg: #ffffff;
  --sfc-bg-light: #f3f4f6;
  max-width: 800px;
  margin: 0 auto;
  color: var(--sfc-text-color);
  font-family: Arial, Helvetica, sans-serif;
  background: var(--sfc-bg-light);
  border: 1px solid var(--sfc-border-color);
  padding: 1rem;
  box-sizing: border-box;
  container-type: inline-size;
}

.sfc-calculator h2,
.sfc-calculator h3,
.sfc-calculator p {
  margin: 0;
}

.sfc-title {
  font-size: 2rem;
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.sfc-summary-grid {
  border: 1px solid var(--sfc-border-color);
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-bottom: 1rem;
  background: var(--sfc-panel-bg);
}

.sfc-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr);
  gap: 1rem;
  align-items: start;
}

.sfc-main-column {
  min-width: 0;
}

.sfc-summary-card {
  padding: 1rem;
  min-height: 120px;
  background: var(--sfc-panel-bg);
}

.sfc-summary-card-spend {
  border-right: 1px solid var(--sfc-border-color);
}

.sfc-summary-card-monthly {
  background: var(--sfc-accent-color);
  color: #fff;
}

.sfc-caption {
  font-size: 1rem;
  margin-bottom: 0.55rem;
}

.sfc-big-value {
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
}

.sfc-term-label {
  margin-top: 0.3rem;
  font-size: 1.1rem;
}

.sfc-change-btn {
  margin-top: 0.55rem;
  border: 0;
  background: transparent;
  color: var(--sfc-accent-color);
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
}

.sfc-spend-editor {
  margin-top: 0.6rem;
  width: 100% !important;
  max-width: 100% !important;
}

.sfc-spend-editor label {
  display: block;
  font-size: 0.87rem;
  color: var(--sfc-muted-text);
  margin-bottom: 0.3rem;
}

.sfc-spend-input {
  display: block;
  width: 100% !important;
  max-width: 100% !important;
  border: 1px solid var(--sfc-border-color);
  border-radius: 2px;
  padding: 0.5rem 0.6rem;
  font-size: 1rem;
  min-height: 44px;
  box-sizing: border-box;
}

.sfc-panel {
  border: 1px solid var(--sfc-border-color);
  padding: 1rem;
  background: var(--sfc-panel-bg);
}

.sfc-credit-summary {
  border: 1px solid var(--sfc-border-color);
  background: var(--sfc-panel-bg);
  padding: 0.75rem;
}

.sfc-credit-summary h3 {
  font-size: 1.2rem;
  margin-bottom: 0.65rem;
}

.sfc-credit-summary-table {
  border: 1px solid var(--sfc-border-color);
}

.sfc-credit-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  border-bottom: 1px solid var(--sfc-border-color);
  padding: 0.62rem 0.7rem;
  font-size: 0.75rem;
}

.sfc-credit-row:last-child {
  border-bottom: 0;
}

.sfc-credit-row span {
  color: var(--sfc-muted-text);
}

.sfc-credit-row strong {
  font-weight: 700;
  color: var(--sfc-text-color);
  text-align: right;
  word-break: break-word;
}

.sfc-panel h3 {
  font-size: 1.9rem;
  margin-bottom: 0.7rem;
}

.sfc-divider {
  height: 4px;
  background: var(--sfc-accent-color);
  margin-bottom: 1rem;
}

.sfc-product-label {
  margin-bottom: 0.75rem;
  color: #1f2937;
}

.sfc-product-options {
  border: 1px solid var(--sfc-border-color);
  margin-bottom: 1rem;
}

.sfc-product-option {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.9rem 0.75rem;
  border-bottom: 1px solid var(--sfc-border-color);
  font-size: 1.05rem;
  background: var(--sfc-panel-bg);
  transition: background-color 0.2s ease;
}

.sfc-product-option:last-child {
  border-bottom: 0;
}

.sfc-product-option input[type="radio"] {
  margin: 0;
  accent-color: var(--sfc-accent-color);
}

.sfc-product-option input[type="radio"]:checked + span {
  color: var(--sfc-accent-color);
  font-weight: 700;
}

.sfc-term-row {
  margin-bottom: 1rem;
}

.sfc-term-row label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--sfc-muted-text);
}

.sfc-term-select {
  width: 100%;
  border: 1px solid var(--sfc-border-color);
  border-radius: 2px;
  padding: 0.55rem 0.7rem;
  font-size: 1rem;
}

.sfc-deposit-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.sfc-deposit-row > span {
  font-size: 1.2rem;
}

.sfc-deposit-stepper {
  min-width: 220px;
  max-width: 100%;
  border: 2px solid var(--sfc-text-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  padding: 0 0.5rem;
}

.sfc-deposit-stepper button {
  border: 0;
  background: transparent;
  color: var(--sfc-accent-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  width: 42px;
  height: 42px;
  padding: 0;
  margin: 0;
  vertical-align: middle;
}

.sfc-deposit-stepper button:hover {
  opacity: 0.88;
}

.sfc-deposit-stepper button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.sfc-deposit-value {
  font-size: 1.2rem;
  font-weight: 700;
}

.sfc-meta-row {
  margin-top: 0.7rem;
  font-size: 0.92rem;
  color: var(--sfc-muted-text);
}

.sfc-meta-message {
  color: var(--sfc-text-color);
}

@container (max-width: 760px) {
  .sfc-summary-grid {
    grid-template-columns: 1fr;
  }

  .sfc-summary-card-spend {
    border-right: 0;
    border-bottom: 1px solid var(--sfc-border-color);
  }

  .sfc-content-grid {
    grid-template-columns: 1fr;
  }

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

  .sfc-deposit-stepper {
    min-width: 0;
    width: 100%;
  }

  .sfc-credit-row {
    font-size: 0.82rem;
  }
}

@container (max-width: 560px) {
  .sfc-title {
    font-size: 1.7rem;
  }

  .sfc-panel h3 {
    font-size: 1.35rem;
  }

  .sfc-big-value {
    font-size: 2rem;
  }

  .sfc-credit-row {
    gap: 0.5rem;
    padding: 0.55rem 0.6rem;
    font-size: 0.76rem;
  }
}

@media (max-width: 767px) {
  .sfc-title {
    font-size: 2.2rem;
    margin-bottom: 1rem;
  }

  .sfc-summary-grid {
    grid-template-columns: 1fr;
  }

  .sfc-content-grid {
    grid-template-columns: 1fr;
  }

  .sfc-summary-card-spend {
    border-right: 0;
    border-bottom: 1px solid var(--sfc-border-color);
  }

  .sfc-panel h3 {
    font-size: 1.8rem;
  }

  .sfc-deposit-row {
    flex-direction: column;
    align-items: flex-start;
  }
}