.bc-calc-host { width: 100%; }

    .bc-calc-host .field-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      background: var(--ys-bg-soft);
      padding: 18px;
      border-radius: 10px;
      margin-bottom: 16px;
    }
    @media (max-width: 600px) { .bc-calc-host .field-grid { grid-template-columns: 1fr; } }
    .bc-calc-host .field-grid .full { grid-column: 1 / -1; }

    .bc-calc-host label {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      font-size: 0.72rem;
      color: var(--ys-navy);
      margin-bottom: 6px;
    }
    .bc-calc-host .row { display: flex; align-items: stretch; }
    .bc-calc-host input[type="number"],
    .bc-calc-host select {
      width: 100%;
      padding: 10px 12px;
      border: 1.5px solid var(--ys-line);
      border-radius: 6px;
      font-size: 0.96rem;
      font-family: var(--ys-font-body);
      background: #fff;
      color: var(--ys-navy);
      box-sizing: border-box;
      transition: border-color 0.15s ease, box-shadow 0.15s ease;
    }
    .bc-calc-host input:focus,
    .bc-calc-host select:focus {
      outline: none;
      border-color: var(--wf-coral);
      box-shadow: 0 0 0 3px rgba(250, 119, 60, 0.18);
    }
    .bc-calc-host .row input { border-radius: 6px 0 0 6px; }
    .bc-calc-host .row .unit {
      padding: 0 12px;
      background: var(--ys-navy);
      color: #fff;
      font-family: var(--ys-font-display);
      letter-spacing: 0.06em;
      font-size: 0.74rem;
      display: flex; align-items: center;
      border-radius: 0 6px 6px 0;
    }

    .bc-calc-host .unit-toggle {
      display: flex; align-items: center; gap: 12px;
      margin-bottom: 14px;
      font-family: var(--ys-font-display);
      letter-spacing: 0.1em; text-transform: uppercase;
      font-size: 0.72rem; color: var(--ys-muted);
    }
    .bc-calc-host .unit-toggle .switch {
      display: inline-flex;
      border: 1.5px solid var(--ys-line);
      border-radius: 6px;
      overflow: hidden;
    }
    .bc-calc-host .unit-toggle .switch button {
      background: #fff; border: 0; padding: 6px 12px;
      font-family: var(--ys-font-display);
      letter-spacing: 0.1em; text-transform: uppercase;
      font-size: 0.7rem; font-weight: 600;
      color: var(--ys-muted);
      cursor: pointer;
    }
    .bc-calc-host .unit-toggle .switch button.active {
      background: var(--ys-navy); color: #fff;
    }

    .bc-calc-host .err {
      color: #c93939;
      background: rgba(201, 57, 57, 0.08);
      border-left: 4px solid #c93939;
      padding: 10px 14px;
      margin-top: 12px;
      border-radius: 6px;
      font-size: 0.92rem;
      display: none;
    }
    .bc-calc-host .err.active { display: block; }

    .bc-calc-host .results-grid {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
      margin-top: 18px;
    }
    @media (max-width: 760px) { .bc-calc-host .results-grid { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 480px) { .bc-calc-host .results-grid { grid-template-columns: 1fr; } }

    .bc-calc-host .result-tile {
      background: #fff;
      border: 1px solid var(--ys-line);
      border-radius: 10px;
      padding: 14px;
      text-align: center;
    }
    .bc-calc-host .result-tile.featured {
      background: var(--ys-navy); border-color: var(--ys-navy);
    }
    .bc-calc-host .result-tile.featured .result-label,
    .bc-calc-host .result-tile.featured .result-value,
    .bc-calc-host .result-tile.featured .result-aux { color: #fff; }
    .bc-calc-host .result-tile.featured .result-aux { color: rgba(255, 255, 255, 0.7); }

    .bc-calc-host .result-label {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.12em;
      font-size: 0.7rem;
      color: var(--ys-muted);
      margin-bottom: 6px;
    }
    .bc-calc-host .result-value {
      display: block;
      font-family: var(--ys-font-display);
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--ys-navy);
      letter-spacing: 0.02em;
    }
    .bc-calc-host .result-aux {
      display: block;
      font-size: 0.78rem;
      color: var(--ys-muted);
      margin-top: 4px;
    }

    .bc-calc-host .band-row {
      display: flex; gap: 4px;
      margin-top: 18px;
    }
    .bc-calc-host .band {
      flex: 1; min-width: 0;
      padding: 10px 6px;
      text-align: center;
      background: var(--ys-bg-soft);
      border-radius: 6px;
      font-size: 0.78rem;
      color: var(--ys-muted);
      transition: all 0.2s ease;
    }
    .bc-calc-host .band-name {
      display: block;
      font-family: var(--ys-font-display);
      letter-spacing: 0.06em; text-transform: uppercase;
      font-size: 0.66rem;
      font-weight: 600;
      margin-bottom: 4px;
    }
    .bc-calc-host .band.active {
      background: var(--wf-coral);
      color: #fff;
      box-shadow: 0 4px 12px rgba(250, 119, 60, 0.3);
    }
    .bc-calc-host .band.active .band-name { color: #fff; }