/* Calculator styles. Tokens from spec 03 §1. Mobile first; two columns (55/45) from 900px. No web fonts. */
.diy-calc {
  --diy-calc-navy: #17304a;
  --diy-calc-teal: #087f80;
  --diy-calc-teal-dark: #066566;
  --diy-calc-surface: #f5f8fa;
  --diy-calc-line: #c9d3dc;
  --diy-calc-text: #1b2631;
  --diy-calc-muted: #4b5966;
  --diy-calc-amber: #8a5a00;
  --diy-calc-amber-bg: #fff4dc;
  --diy-calc-red: #b42318;
  --diy-calc-red-bg: #fdecea;
  --diy-calc-radius: 8px;
  color: var(--diy-calc-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}
.diy-calc *,
.diy-calc *::before,
.diy-calc *::after {
  box-sizing: border-box;
}
.diy-calc [hidden] {
  display: none !important;
}
.diy-calc-sr {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.diy-calc-print-title {
  display: none;
}

/* The tool: keep 24px clear space around it so an adjacent ad never touches a control (D18). */
.diy-calc-tool {
  display: grid;
  gap: 24px;
  margin: 24px 0;
  padding: 16px;
  background: var(--diy-calc-surface);
  border: 1px solid var(--diy-calc-line);
  border-radius: var(--diy-calc-radius);
}
@media (min-width: 900px) {
  .diy-calc-tool {
    grid-template-columns: minmax(0, 55fr) minmax(0, 45fr);
    padding: 24px;
  }
  .diy-calc-results {
    position: sticky;
    top: 16px;
    align-self: start;
    max-height: calc(100vh - 32px);
    overflow: auto;
  }
}

/* Form */
.diy-calc-form fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}
.diy-calc-group {
  margin-bottom: 20px !important;
}
.diy-calc-group > legend,
.diy-calc-switch > legend {
  font-weight: 700;
  color: var(--diy-calc-navy);
  margin-bottom: 8px;
  padding: 0;
}
.diy-calc-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 16px;
}
.diy-calc-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: center;
}
.diy-calc-switch > legend {
  float: left;
  margin: 0 8px 0 0;
}
.diy-calc-switch label,
.diy-calc-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  cursor: pointer;
}
.diy-calc-check {
  display: flex;
}
.diy-calc-switch input,
.diy-calc-check input {
  width: 20px;
  height: 20px;
  margin: 0;
  accent-color: var(--diy-calc-teal);
}
.diy-calc-toolbar-actions {
  display: flex;
  gap: 8px;
}
.diy-calc-field {
  margin-bottom: 12px;
}
.diy-calc-field > label {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}
.diy-calc-control {
  display: flex;
  align-items: stretch;
  max-width: 22rem;
}
.diy-calc-control input,
.diy-calc-field select,
.diy-calc-share input {
  min-height: 44px;
  padding: 8px 10px;
  font: inherit;
  font-size: max(16px, 1rem); /* 16px stops iOS zooming into the field */
  color: var(--diy-calc-text);
  background: #fff;
  border: 1px solid #7c8a97;
  border-radius: 6px;
}
.diy-calc-control input {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
}
.diy-calc-control .diy-calc-unit {
  flex: 0 0 auto;
  margin-left: 4px;
}
.diy-calc-affix {
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  color: var(--diy-calc-muted);
  white-space: nowrap;
}
.diy-calc-share input {
  width: 100%;
}
.diy-calc-help,
.diy-calc-note {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: var(--diy-calc-muted);
}
.diy-calc-msg:empty {
  display: none;
}
.diy-calc-msg {
  margin: 6px 0 0;
  padding: 6px 10px;
  font-size: 0.92rem;
  border-left: 4px solid;
  border-radius: 4px;
}
.diy-calc-msg[data-state="error"] {
  color: var(--diy-calc-red);
  background: var(--diy-calc-red-bg);
}
.diy-calc-msg[data-state="error"]::before {
  content: "⚠ ";
}
.diy-calc-msg[data-state="hint"] {
  color: var(--diy-calc-amber);
  background: var(--diy-calc-amber-bg);
}
.diy-calc-msg[data-state="hint"]::before {
  content: "ⓘ ";
}
.diy-calc [aria-invalid="true"] {
  border-color: var(--diy-calc-red);
  border-width: 2px;
}
.diy-calc input:focus-visible,
.diy-calc select:focus-visible,
.diy-calc button:focus-visible,
.diy-calc summary:focus-visible,
.diy-calc a:focus-visible {
  outline: 3px solid var(--diy-calc-teal);
  outline-offset: 2px;
}
.diy-calc-errors {
  padding: 12px 16px;
  margin-bottom: 16px;
  color: var(--diy-calc-red);
  background: var(--diy-calc-red-bg);
  border: 2px solid var(--diy-calc-red);
  border-radius: var(--diy-calc-radius);
}
.diy-calc-errors-title {
  margin: 0 0 4px;
  font-weight: 700;
}
.diy-calc-errors ul {
  margin: 0;
  padding-left: 20px;
}
.diy-calc-errors a {
  color: inherit;
}
.diy-calc-rows {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
}
.diy-calc-zone {
  margin-bottom: 12px;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--diy-calc-line);
  border-radius: var(--diy-calc-radius);
}
.diy-calc-zone legend {
  font-weight: 700;
  padding: 0;
}
.diy-calc-readings > li {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
.diy-calc-readings .diy-calc-field {
  flex: 1 1 auto;
}
.diy-calc-grid {
  display: grid;
  gap: 0 16px;
  grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
}
.diy-calc-presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.diy-calc-presets-label {
  font-size: 0.9rem;
  color: var(--diy-calc-muted);
}
.diy-calc-btn,
.diy-calc-chip {
  min-height: 44px;
  min-width: 44px;
  padding: 8px 14px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--diy-calc-teal);
  border: 2px solid var(--diy-calc-teal);
  border-radius: 6px;
  cursor: pointer;
}
.diy-calc-btn:hover {
  background: var(--diy-calc-teal-dark);
}
.diy-calc-btn-quiet,
.diy-calc-chip {
  color: var(--diy-calc-teal-dark);
  background: #fff;
}
.diy-calc-btn-quiet:hover,
.diy-calc-chip:hover {
  background: #e6f2f2;
}
.diy-calc-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.diy-calc-chip {
  border-radius: 999px;
  font-weight: 500;
}
.diy-calc-more {
  margin: 12px 0;
  padding: 0 12px;
  background: #fff;
  border: 1px solid var(--diy-calc-line);
  border-radius: var(--diy-calc-radius);
}
.diy-calc-more > summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  font-weight: 700;
  color: var(--diy-calc-navy);
  cursor: pointer;
}
.diy-calc-more[open] {
  padding-bottom: 12px;
}
.diy-calc-nested {
  margin-top: 8px;
}

/* Results */
.diy-calc-results {
  min-width: 0;
}
.diy-calc-results-title {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--diy-calc-navy);
}
.diy-calc-summary {
  padding: 16px;
  color: #fff;
  background: var(--diy-calc-navy);
  border-radius: var(--diy-calc-radius);
  min-height: 9rem;
}
.diy-calc-headline {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1.2;
}
.diy-calc-exact {
  margin: 6px 0 0;
  font-size: 1.05rem;
}
.diy-calc-factors {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 0.92rem;
}
.diy-calc-alt {
  margin: 8px 0 0;
  font-size: 0.95rem;
  opacity: 0.9;
}
.diy-calc.is-stale .diy-calc-summary,
.diy-calc-tool.is-stale .diy-calc-summary {
  background: #5c6b78;
}
.diy-calc-stale {
  padding: 8px 12px;
  color: var(--diy-calc-amber);
  background: var(--diy-calc-amber-bg);
  border-radius: 6px;
}
.diy-calc-block {
  margin-top: 16px;
}
.diy-calc-block h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--diy-calc-navy);
}
.diy-calc-hints .diy-calc-list {
  padding: 8px 12px 8px 28px;
  color: var(--diy-calc-amber);
  background: var(--diy-calc-amber-bg);
  border-radius: 6px;
}
.diy-calc-estimate {
  margin-top: 8px;
}
.diy-calc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: #fff;
}
.diy-calc-table caption {
  text-align: left;
  font-weight: 700;
  color: var(--diy-calc-navy);
  padding-bottom: 4px;
}
.diy-calc-table th,
.diy-calc-table td {
  padding: 6px 8px;
  text-align: left;
  border-bottom: 1px solid var(--diy-calc-line);
}
.diy-calc-table .diy-calc-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
/* Tables never push the page sideways: tighter cells on narrow screens, and a scroll box as a last resort. */
.diy-calc-block,
.diy-calc-scroll {
  max-width: 100%;
  overflow-x: auto;
}
@media (max-width: 480px) {
  .diy-calc-table {
    font-size: 0.875rem;
  }
  .diy-calc-table th,
  .diy-calc-table td {
    padding: 6px 4px;
  }
}
.diy-calc-mark {
  background: #e6f2f2;
  font-weight: 700;
}
.diy-calc-mark th::before {
  content: "▸ ";
  color: var(--diy-calc-teal-dark);
}
.diy-calc-list {
  margin: 0;
  padding-left: 20px;
}
.diy-calc-inline {
  display: flex;
  align-items: center;
  gap: 8px;
}
.diy-calc-inline > label {
  margin: 0;
}
.diy-calc-math > summary {
  color: var(--diy-calc-teal-dark);
}
.diy-calc-shopping {
  list-style: none;
  margin: 0;
  padding: 0;
}
.diy-calc-shopping li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 2px 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--diy-calc-line);
}
.diy-calc-box {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 2px solid var(--diy-calc-muted);
  border-radius: 3px;
}
.diy-calc-item {
  font-weight: 600;
}
.diy-calc-qty {
  grid-column: 2;
}
.diy-calc-cost {
  grid-column: 3;
  grid-row: 1 / span 2;
  align-self: center;
  font-variant-numeric: tabular-nums;
}
.diy-calc-total {
  margin: 8px 0 0;
  font-weight: 700;
}
.diy-calc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.diy-calc-status:empty {
  display: none;
}
.diy-calc-status {
  margin: 8px 0 0;
  color: var(--diy-calc-teal-dark);
  font-weight: 600;
}
.diy-calc-privacy {
  margin-top: 16px;
}
.diy-calc-diagram {
  margin: 16px 0 0;
}
.diy-calc-diagram svg {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  font-size: 11px;
  fill: var(--diy-calc-text);
}
.diy-calc-diagram .diy-calc-fill {
  fill: #c8d6e0;
  stroke: var(--diy-calc-navy);
  stroke-width: 1.5;
}
.diy-calc-diagram .diy-calc-hole {
  fill: var(--diy-calc-surface);
  stroke: var(--diy-calc-navy);
  stroke-width: 1.5;
}
.diy-calc-diagram .diy-calc-bag {
  fill: var(--diy-calc-teal);
}
.diy-calc-diagram .diy-calc-dim-fill {
  fill: var(--diy-calc-navy);
}
.diy-calc-diagram .diy-calc-dim {
  stroke: var(--diy-calc-teal-dark);
  stroke-dasharray: 4 3;
}
.diy-calc-diagram .diy-calc-dia-label {
  fill: var(--diy-calc-muted);
}
.diy-calc-diagram figcaption {
  font-size: 0.85rem;
  color: var(--diy-calc-muted);
}

/* Sticky headline on small screens, so the answer stays in view while editing (E1). */
.diy-calc-sticky {
  display: none;
}
@media (max-width: 899px) {
  .diy-calc-tool.is-ready .diy-calc-sticky {
    position: sticky;
    bottom: 0;
    z-index: 2;
    display: block;
    margin: 0 -16px -16px;
    padding: 10px 16px;
    color: #fff;
    background: var(--diy-calc-navy);
    border-radius: 0 0 var(--diy-calc-radius) var(--diy-calc-radius);
    font-size: 0.95rem;
  }
  .diy-calc-sticky span {
    display: block;
    font-size: 0.85rem;
    opacity: 0.9;
  }
  .diy-calc-tool.is-ready .diy-calc-results {
    order: 0;
  }
}

/* Methodology (outside the tool) */
.diy-calc-method h2 {
  color: var(--diy-calc-navy);
}
.diy-calc-scroll {
  overflow-x: auto;
}
.diy-calc-reviewed {
  font-size: 0.9rem;
  color: var(--diy-calc-muted);
}

@media (prefers-reduced-motion: reduce) {
  .diy-calc * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}

/* Printed job sheet (E9): inputs, results, shopping list with tick boxes, notes, site title. */
@media print {
  .diy-calc-print-title {
    display: block;
    font-weight: 700;
    font-size: 14pt;
    margin: 0 0 8pt;
  }
  .diy-calc-tool {
    display: block;
    padding: 0;
    border: 0;
    background: none;
  }
  .diy-calc-results {
    position: static;
    max-height: none;
    overflow: visible;
  }
  .diy-calc-btn,
  .diy-calc-chip,
  .diy-calc-actions,
  .diy-calc-presets,
  .diy-calc-toolbar,
  .diy-calc-sticky,
  .diy-calc-share,
  .diy-calc-status,
  .diy-calc-inline,
  .diy-calc-errors,
  .diy-calc-msg,
  .diy-calc-help,
  .diy-calc-unit {
    display: none !important;
  }
  .diy-calc-more {
    border: 0;
    padding: 0;
  }
  .diy-calc-more > summary {
    display: none;
  }
  .diy-calc-more:not([open]) > *:not(summary) {
    display: block;
  }
  .diy-calc-summary {
    color: #000;
    background: none;
    border: 2px solid #000;
  }
  .diy-calc-control input {
    border: 0;
    border-bottom: 1px solid #000;
    border-radius: 0;
    min-height: 0;
    padding: 0;
  }
  .diy-calc-method {
    break-before: page;
  }
}