/* Percentage Calculator — Custom Styles */

    .calc-sections {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .calc-card {
      padding: 24px;
      background: var(--color-bg);
      border: 1px solid var(--color-border-light);
      border-radius: var(--radius-md);
      transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }

    .calc-card:hover {
      border-color: var(--color-border);
    }

    .calc-card-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--color-text);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .calc-card-title .card-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: var(--color-primary);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      flex-shrink: 0;
    }

    .calc-card-row {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .calc-card-row .inline-label {
      font-size: 0.95rem;
      color: var(--color-text-secondary);
      font-weight: 500;
      white-space: nowrap;
    }

    .calc-card-row input[type="number"] {
      padding: 10px 14px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      font-family: var(--font-body);
      font-size: 1rem;
      color: var(--color-text);
      background: var(--color-surface);
      transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
      outline: none;
      width: 140px;
      -moz-appearance: textfield;
    }

    .calc-card-row input[type="number"]::-webkit-inner-spin-button,
    .calc-card-row input[type="number"]::-webkit-outer-spin-button {
      -webkit-appearance: none;
      margin: 0;
    }

    .calc-card-row input[type="number"]:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px var(--color-primary-light);
    }

    .calc-card-row input[type="number"]::placeholder {
      color: var(--color-text-muted);
    }

    .calc-card-result {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 14px;
      padding: 12px 16px;
      background: var(--color-surface);
      border-radius: var(--radius-sm);
      border: 1px solid var(--color-border-light);
      min-height: 48px;
    }

    .result-label {
      font-size: 0.78rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--color-text-muted);
      white-space: nowrap;
    }

    .result-value {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--color-primary);
      font-family: var(--font-mono);
    }

    .result-value.increase {
      color: var(--color-success);
    }

    .result-value.decrease {
      color: var(--color-error);
    }

    .result-direction {
      font-size: 0.82rem;
      font-weight: 600;
      padding: 2px 10px;
      border-radius: 999px;
      white-space: nowrap;
    }

    .result-direction.increase {
      background: var(--color-success-bg);
      color: var(--color-success);
    }

    .result-direction.decrease {
      background: var(--color-error-bg);
      color: var(--color-error);
    }

    /* Responsive */
    @media (max-width: 600px) {
      .calc-card-row {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
      }

      .calc-card-row input[type="number"] {
        width: 100%;
      }

      .calc-card-row .inline-label {
        font-size: 0.88rem;
      }
    }