.paint-calculator { padding: 24px; background: var(--cream); border: 1px solid var(--line, #dce2e9); border-radius: 6px; }
.paint-calculator [hidden] { display: none; }
.paint-calculator form { margin-top: 24px; }
.paint-calculator .paint-method { border: 0; padding: 0; margin: 0 0 24px; }
.paint-method legend { font-weight: 600; margin-bottom: 12px; }
.paint-method label { display: inline-flex; gap: 8px; align-items: center; margin: 0 20px 8px 0; min-height: 44px; cursor: pointer; }
.paint-method input { accent-color: var(--navy); width: 18px; height: 18px; margin: 0; cursor: pointer; }
.paint-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.paint-fields-pair { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.paint-field { min-width: 0; margin-bottom: 24px; }
.paint-field label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 16px; }
.paint-field input { display: block; width: 100%; min-height: 48px; padding: 10px 12px; border: 1px solid #8995a9; border-radius: 4px; background: white; color: var(--navy); font: inherit; font-size: 16px; font-variant-numeric: tabular-nums; }
.paint-calculator input:focus-visible, .paint-calculator button:focus-visible { outline: 2px solid var(--navy); outline-offset: 3px; }
.paint-field input[aria-invalid="true"] { border-color: #972e29; }
.paint-hint { display: block; font-size: 14px; line-height: 1.6; color: #475675; margin-top: 8px; }
.paint-actions { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
.paint-actions .text-link { padding: 10px 0; min-height: 44px; border: 0; background: transparent; cursor: pointer; color: var(--navy); font-family: inherit; font-size: 14px; }
.paint-calculator .paint-error { color: #972e29; margin: 0 0 20px; }
.paint-result:not(:empty) { border-top: 1px solid #b5bfcd; margin-top: 24px; padding-top: 24px; font-variant-numeric: tabular-nums; }
.paint-result h3 { margin: 0 0 16px; }
@media (max-width: 600px) { .paint-fields, .paint-fields-pair { grid-template-columns: 1fr; gap: 0; } .paint-calculator { padding: 20px; } }