.materials-page main { padding-block: 40px 0; }
.materials-page .calc-intro { padding: 0 0 32px; border: 0; max-width: 880px; }
.materials-page h1 { font-size: clamp(32px,4.4vw,52px); font-weight: 800; text-wrap: balance; margin-bottom: 20px; }
.materials-page .lead { font-size: 17px; line-height: 1.75; }
.calculator-workspace { display: grid; grid-template-columns: minmax(0,1.35fr) minmax(0,1fr); gap: 28px; align-items: start; padding-bottom: 48px; }
#materials-form,.calc-results { min-width: 0; padding: 28px; border: 1px solid #51483e; border-radius: 12px; background: #181818; }
.calc-results { position: sticky; top: 110px; }
.calc-results h2 { font-size: 23px; margin-bottom: 20px; }
.materials-page fieldset { border: 0; border-top: 1px solid #38332d; padding: 24px 0 0; margin: 28px 0 0; min-width: 0; }
.materials-page legend { padding: 0 12px 0 0; font-size: 20px; font-weight: 800; }
.calc-fields { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.calc-field { min-width: 0; }
.calc-field[hidden] { display: none; }
.calc-field label { display: block; font-weight: 700; font-size: 14px; line-height: 1.5; margin-bottom: 8px; }
.calc-field input,.calc-field select { display: block; box-sizing: border-box; width: 100%; min-width: 0; min-height: 48px; padding: 11px 12px; border: 1px solid #786b5b; border-radius: 8px; background: #0d0d0d; color: #f5f0e8; font: 600 16px/1.5 Manrope,Arial,sans-serif; caret-color: #ff9b62; }
.calc-field select { padding-right: 28px; text-overflow: ellipsis; }
.calc-field input[aria-invalid=true] { border-color: #ffb49b; outline: 2px solid #ffb49b; outline-offset: 1px; }
.calc-field small { display: block; color: #c4baad; font-size: 12px; line-height: 1.6; margin-top: 6px; }
.calc-example,.calc-note { color: #c4baad; font-size: 13px; line-height: 1.7; }
.calc-example { margin: 0 0 20px; }
.calc-note { margin: 16px 0 0; }
.calc-error { color: #ffb49b; font-size: 14px; line-height: 1.7; margin-top: 20px; }
.calc-error:empty,#copy-status:empty { display: none; }
.materials-page .button { font: 800 14px/1.5 Manrope,Arial,sans-serif; min-height: 48px; border-radius: 10px; cursor: pointer; }
.materials-page .button:disabled { opacity: .5; cursor: not-allowed; }
.materials-page button.button { background: transparent; color: #f5f0e8; }
.materials-page button.button.primary { background: #ff5500; color: #111; border-color: #ff5500; }
.calc-summary { padding-bottom: 24px; border-bottom: 1px solid #51483e; }
.calc-summary strong { display: block; font-size: clamp(36px,4vw,48px); color: #ff9b62; font-weight: 800; line-height: 1.2; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.calc-summary span { display: block; margin-top: 8px; font-size: 15px; font-weight: 700; }
#result-breakdown { margin: 16px 0 0; font-size: 14px; }
#result-breakdown > div { display: flex; gap: 20px; justify-content: space-between; padding-block: 10px; border-bottom: 1px solid #38332d; }
#result-breakdown dt { color: #c4baad; min-width: 0; }
#result-breakdown dd { margin: 0; text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; flex-shrink: 0; }
.calc-copy { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.calc-copy .button { flex: 1 1 140px; padding-inline: 10px; }
.materials-page .calc-bot { display: grid; grid-template-columns: minmax(0,1.5fr) minmax(0,1fr); align-items: center; gap: 40px; padding: 32px; border: 1px solid #51483e; border-radius: 12px; background: #181818; }
.calc-bot h2 { font-size: clamp(24px,3vw,32px); font-weight: 800; margin-bottom: 16px; text-wrap: balance; }
.calc-bot .button { width: 100%; }
.calc-bot p { margin-bottom: 0; }
.materials-page .calc-explain { max-width: 880px; padding-block: 40px; }
.calc-explain h2 { font-size: 28px; }
.calc-explain summary { line-height: 1.6; }
.calc-explain a { display: inline-block; padding-block: 5px; }
.materials-page footer { border-top: 1px solid #38332d; }
@media(max-width:900px) {
 .calculator-workspace { grid-template-columns: minmax(0,1fr); }
 .calc-results { position: static; }
 .materials-page .calc-bot { grid-template-columns: minmax(0,1fr); gap: 24px; }
}
@media(max-width:560px) {
 .materials-page main { padding-top: 28px; }
 .materials-page h1 { font-size: clamp(29px,8vw,36px); overflow-wrap: normal; }
 .materials-page .lead { font-size: 16px; }
 #materials-form,.calc-results { padding: 24px 20px; }
 .calc-fields { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
 .calc-fields .calc-field:has(select),.calc-fields .calc-field:has(#mc-openings),.calc-fields .calc-field:has(#mc-coverage),.calc-fields .calc-field:has(#mc-consumption),.calc-fields .calc-field:has(#mc-repeat),.calc-fields .calc-field:has(#mc-density),.calc-fields .calc-field:has(#mc-loosening) { grid-column: 1 / -1; }
 .calculator-workspace { gap: 20px; padding-bottom: 32px; }
 .materials-page .calc-bot { padding: 24px 20px; }
 .materials-page .calc-explain { padding-block: 32px; }
 .calc-explain h2 { font-size: 26px; }
 .materials-page .actions .button { flex: 1 1 120px; }
 #result-breakdown > div { gap: 12px; }
 #result-breakdown dt { max-width: 62%; }
}
@media print {
 .site-header,footer,#materials-form,.calc-copy,.calc-bot,.calc-explain,.skip { display: none !important; }
 .calculator-workspace { display: block; }.calc-results { position: static; }
}