/* wallpapercalculator.org — warm, task-first calculator UI. No external assets. */
:root {
  color-scheme: dark;
  --bg: #14110e;
  --bg-soft: #1b1712;
  --panel: #211c16;
  --panel-2: #2a231b;
  --ink: #f3ece1;
  --ink-soft: #c7bbaa;
  --ink-faint: #ad9f8c;
  --line: rgba(233, 216, 197, 0.17);
  --line-strong: rgba(233, 216, 197, 0.34);
  --accent: #c79245;
  --accent-2: #e0ad5a;
  --accent-ink: #1c150a;
  --accent-soft: rgba(185, 134, 63, 0.18);
  --paper: #d9c9a3;
  --good: #69b47c;
  --warn: #e3a53a;
  --danger: #ed7168;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.34);
  --maxw: 1120px;
  --ff: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #14110e; --bg-soft: #1b1712; --panel: #211c16; --panel-2: #2a231b;
    --ink: #f3ece1; --ink-soft: #c7bbaa; --ink-faint: #ad9f8c;
    --line: rgba(233, 216, 197, .17); --line-strong: rgba(233, 216, 197, .34);
    --accent: #c79245; --accent-2: #e0ad5a; --accent-ink: #1c150a; --accent-soft: rgba(185, 134, 63, .18);
  }
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f6f1e8; --bg-soft: #eee6da; --panel: #fffdfa; --panel-2: #f8f2e9;
    --ink: #241d13; --ink-soft: #5f5344; --ink-faint: #746655;
    --line: #ded2c2; --line-strong: #c9b8a1;
    --accent: #94651f; --accent-2: #85591b; --accent-ink: #fffaf1; --accent-soft: #f2e4cc;
    --good: #34794a; --warn: #9b6715; --danger: #ad4139; --shadow: 0 14px 36px rgba(55, 39, 20, .09);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #14110e; --bg-soft: #1b1712; --panel: #211c16; --panel-2: #2a231b;
  --ink: #f3ece1; --ink-soft: #c7bbaa; --ink-faint: #ad9f8c;
  --line: rgba(233, 216, 197, .17); --line-strong: rgba(233, 216, 197, .34);
  --accent: #c79245; --accent-2: #e0ad5a; --accent-ink: #1c150a; --accent-soft: rgba(185, 134, 63, .18);
  --good: #69b47c; --warn: #e3a53a; --danger: #ed7168; --shadow: 0 18px 48px rgba(0,0,0,.34);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f1e8; --bg-soft: #eee6da; --panel: #fffdfa; --panel-2: #f8f2e9;
  --ink: #241d13; --ink-soft: #5f5344; --ink-faint: #746655;
  --line: #ded2c2; --line-strong: #c9b8a1;
  --accent: #94651f; --accent-2: #85591b; --accent-ink: #fffaf1; --accent-soft: #f2e4cc;
  --good: #34794a; --warn: #9b6715; --danger: #ad4139; --shadow: 0 14px 36px rgba(55,39,20,.09);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.55 var(--ff);
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
button, summary { -webkit-tap-highlight-color: transparent; }
img, svg, canvas { max-width: 100%; }
h1, h2, h3 { line-height: 1.18; text-wrap: balance; }
a { color: var(--accent-2); text-underline-offset: .16em; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--accent-2); outline-offset: 3px; border-radius: 5px; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 100;
  padding: 10px 14px; border-radius: var(--radius-sm);
  background: var(--accent); color: var(--accent-ink); font-weight: 750;
}
.skip-link:focus { top: 16px; }

.site-header {
  max-width: var(--maxw); margin: 0 auto; min-height: 68px; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { color: var(--ink); font-size: 1.05rem; font-weight: 850; letter-spacing: -.02em; text-decoration: none; }
.brand span { color: var(--accent-2); }
.site-note { margin-left: auto; color: var(--ink-faint); font-size: .78rem; }
.icon-btn {
  width: 42px; height: 42px; display: inline-grid; place-items: center;
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--panel); color: var(--ink); cursor: pointer;
}
.icon-btn:hover { border-color: var(--accent); }
#theme-toggle {
  min-height: 40px; padding: 7px 11px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--panel); color: var(--ink); font-size: .78rem; font-weight: 750; cursor: pointer;
}
#theme-toggle:hover { border-color: var(--accent); }

main { max-width: var(--maxw); margin: 0 auto; padding: 6px 20px 0; }
.hero { max-width: 760px; margin: 12px 0 22px; }
.hero h1 {
  margin: 0 0 8px; font-size: clamp(1.75rem, 4.8vw, 2.75rem);
  letter-spacing: -.045em; font-weight: 850;
}
.tagline { max-width: 64ch; margin: 0; color: var(--ink-soft); font-size: clamp(.98rem, 2vw, 1.1rem); }
.trust-line { margin: 10px 0 0; color: var(--ink-faint); font-size: .82rem; }
.calc, .calculator, .calculator-grid {
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; align-items: start;
}
.panel {
  min-width: 0; padding: 18px;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.panel-title { margin: 0 0 14px; font-size: 1.1rem; }

.fieldset, .controls fieldset {
  min-width: 0; margin: 0; padding: 0; border: 0;
}
.fieldset + .fieldset, .controls fieldset + fieldset { margin-top: 18px; padding-top: 17px; border-top: 1px solid var(--line); }
.fieldset > legend, .controls fieldset > legend {
  margin: 0 0 12px; padding: 0; color: var(--ink-faint);
  font-size: .75rem; font-weight: 800; letter-spacing: .075em; text-transform: uppercase;
}
.field { display: block; min-width: 0; margin: 0 0 12px; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; }
.field-label { display: block; margin: 0 0 5px; color: var(--ink-soft); font-size: .8rem; font-weight: 700; }
.field-hint { margin: 6px 0 0; color: var(--ink-faint); font-size: .75rem; }
.input, .controls input[type="number"], .controls input[type="text"], .controls select {
  width: 100%; min-height: 43px; padding: 9px 11px;
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--panel-2); color: var(--ink);
  font-size: .94rem; -moz-appearance: textfield;
}
.input:hover, .controls input[type="number"]:hover, .controls input[type="text"]:hover, .controls select:hover { border-color: var(--accent); }
.input:focus, .controls input[type="number"]:focus, .controls input[type="text"]:focus, .controls select:focus { border-color: var(--accent-2); background: var(--panel); outline: none; box-shadow: 0 0 0 3px var(--accent-soft); }
.input:focus-visible, .controls input:focus-visible, .controls select:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 1px; }
.input-wrap { position: relative; display: flex; align-items: center; min-width: 0; }
.input-wrap .input, .input-wrap input { padding-right: 46px; }
.field-unit {
  position: absolute; right: 11px; color: var(--ink-faint); font-size: .75rem;
  pointer-events: none;
}
.select-wrap { position: relative; }
.select-wrap::after {
  content: ""; position: absolute; right: 14px; top: 50%;
  width: 7px; height: 7px; border-right: 2px solid var(--ink-faint); border-bottom: 2px solid var(--ink-faint);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}
select.input, .controls select { appearance: none; padding-right: 34px; cursor: pointer; }

.segmented {
  display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 3px; padding: 3px;
  border: 1px solid var(--line); border-radius: 12px; background: var(--panel-2);
}
.segment, [data-set-input] {
  min-height: 38px; padding: 6px 9px; border: 0; border-radius: 8px;
  background: transparent; color: var(--ink-soft); font-size: .8rem; font-weight: 750; cursor: pointer;
}
.segment:hover, [data-set-input]:hover { color: var(--ink); }
.segment[aria-pressed="true"], [data-set-input][aria-pressed="true"], [data-set-input].is-active {
  background: var(--accent); color: var(--accent-ink); box-shadow: 0 1px 4px rgba(0,0,0,.16);
}
.stepper { display: grid; grid-template-columns: 42px minmax(0, 1fr) 42px; gap: 5px; }
.stepper button {
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--panel-2); color: var(--ink); cursor: pointer; font-weight: 800;
}
.stepper button:hover { border-color: var(--accent); color: var(--accent-2); }
.switch {
  display: flex; gap: 10px; align-items: flex-start; color: var(--ink-soft); font-size: .84rem; font-weight: 650; cursor: pointer;
}
.switch input { margin-top: 3px; accent-color: var(--accent); }
.advanced { margin-top: 12px; }
.advanced > summary {
  padding: 9px 0; color: var(--accent-2); font-size: .82rem; font-weight: 750; cursor: pointer;
}
.advanced > summary::marker { color: var(--accent); }
.advanced[open] > summary { margin-bottom: 9px; }
.advanced .field:last-child, .advanced .switch:last-child { margin-bottom: 3px; }

.repeat-row {
  position: relative; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 10px;
  margin: 0 0 10px; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--panel-2);
}
.repeat-row legend { padding: 0 4px; color: var(--ink-faint); font-size: .75rem; font-weight: 750; }
.repeat-row .field { margin-bottom: 0; }
.repeat-row .repeat-remove { grid-column: 1 / -1; justify-self: start; }
.opening-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.text-btn {
  padding: 2px 0; border: 0; background: none; color: var(--danger); font-size: .75rem; font-weight: 700; cursor: pointer;
}
.repeat-add { width: 100%; border-style: dashed !important; }

.swatches { display: grid; grid-template-columns: repeat(6, 34px); gap: 8px; }
.swatch, [data-color] {
  width: 34px; height: 34px; padding: 0; border: 2px solid var(--panel); border-radius: 50%;
  background: var(--paper); box-shadow: 0 0 0 1px var(--line-strong); cursor: pointer;
}
[data-color="#d9c9a3"] { background: #d9c9a3; }
[data-color="#b9c4ae"] { background: #b9c4ae; }
[data-color="#8fae9d"] { background: #8fae9d; }
[data-color="#b86d54"] { background: #b86d54; }
[data-color="#b86d55"] { background: #b86d55; }
[data-color="#63798c"] { background: #63798c; }
[data-color="#6f829c"] { background: #6f829c; }
[data-color="#786a80"] { background: #786a80; }
[data-color="#e5ddd0"] { background: #e5ddd0; }
.swatch[aria-pressed="true"], [data-color][aria-pressed="true"] { box-shadow: 0 0 0 3px var(--accent-2); }

.preview { min-width: 0; margin: 0 0 16px; }
.preview-stage { margin-top: 20px; padding-top: 17px; border-top: 1px solid var(--line); }
.preview-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 11px; }
.preview-header h2 { margin: 0; font-size: 1rem; }
.preview-toolbar {
  display: inline-flex; gap: 3px; padding: 3px; border: 1px solid var(--line);
  border-radius: 999px; background: var(--panel-2);
}
.view-toggle, [data-view] {
  padding: 6px 13px; border: 0; border-radius: 999px;
  background: transparent; color: var(--ink-soft); font-size: .78rem; font-weight: 750; cursor: pointer;
}
.view-toggle[aria-pressed="true"], [data-view][aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }
.preview-appearance { margin: 10px 0 13px; }
.preview-appearance > summary {
  color: var(--accent-2); font-size: .8rem; font-weight: 750; cursor: pointer;
}
.preview-appearance > p { margin: 7px 0 10px; color: var(--ink-faint); font-size: .74rem; }
.preview-appearance .field { max-width: 280px; }
.diagram, #diagram, [data-diagram] {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); gap: 13px;
}
.diagram-cell { min-width: 0; margin: 0; }
.diagram-cell { transition: opacity .16s ease, filter .16s ease; }
.diagram-cell.is-dimmed { opacity: .32; filter: saturate(.4); }
.diagram-cell.is-active .wpc-diagram { border-color: var(--accent-2); box-shadow: 0 0 0 2px var(--accent-soft); }
.diagram-cell figcaption {
  display: flex; justify-content: space-between; gap: 8px; margin-top: 5px; color: var(--ink-faint); font-size: .72rem;
}
.diagram-cell figcaption strong { color: var(--ink-soft); }
.diagram-note {
  grid-column: 1 / -1; margin: 0; padding: 24px;
  border: 1px dashed var(--line-strong); border-radius: var(--radius-sm); color: var(--ink-soft);
}
.wpc-diagram {
  display: block; width: 100%; max-height: 300px; min-height: 150px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel-2);
}
.wpc-wall { fill: var(--panel-2); }
.wpc-wall-outline { fill: none; stroke: var(--line-strong); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.wpc-strip { fill: var(--paper); fill-opacity: .72; }
.wpc-strip--cut { fill: var(--warn); fill-opacity: .38; }
.wpc-seam { stroke: var(--ink-soft); stroke-width: 1; vector-effect: non-scaling-stroke; }
.wpc-repeat { stroke: var(--ink); stroke-opacity: .2; stroke-width: .7; vector-effect: non-scaling-stroke; }
.wpc-repeat--offset { stroke-dasharray: 3 3; }
.wpc-trim { fill: var(--accent-2); fill-opacity: .25; }
.wpc-waste { fill: var(--warn); fill-opacity: .28; }
.wpc-opening { fill: var(--bg); stroke: var(--ink-soft); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.wpc-opening-label { fill: var(--ink-soft); font: 600 11px var(--ff); }
#room-canvas {
  display: block; width: 100%; height: min(54vh, 460px);
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg-soft);
  cursor: grab; touch-action: none;
}
#room-canvas:active { cursor: grabbing; }
.preview-hint, [data-room-fallback] { margin: 7px 0 0; color: var(--ink-faint); font-size: .75rem; }
.room-fallback-floor { fill: var(--panel-2); stroke: var(--line-strong); }
.room-fallback-wall { fill: var(--paper); stroke: var(--ink-soft); }
.room-fallback-wall--side { fill-opacity: .72; }

.result-card { min-width: 0; padding-top: 2px; }
.result-kicker {
  margin: 0; color: var(--accent-2); font-size: .73rem; font-weight: 850; letter-spacing: .085em; text-transform: uppercase;
}
.result-card h2 { margin: 3px 0 4px; font-size: clamp(1.35rem, 4vw, 2rem); letter-spacing: -.035em; }
.result-card h2 strong { color: var(--accent-2); font-size: 1.45em; font-variant-numeric: tabular-nums; }
.result-order-note { margin: 0; color: var(--ink-soft); font-size: .84rem; }
.result-bolts {
  margin: 12px 0 0; padding: 9px 11px; border-left: 3px solid var(--accent);
  background: var(--accent-soft); color: var(--ink-soft); font-size: .8rem;
}
.result-bolts strong, .result-bolts span { display: block; }
.result-bolts strong { color: var(--ink); }
.result-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin: 15px 0; }
.result-metrics > div { min-width: 0; padding: 10px 11px; border-radius: var(--radius-sm); background: var(--panel-2); }
.result-metrics span { display: block; color: var(--ink-faint); font-size: .7rem; }
.result-metrics strong, .result-metrics .result-value {
  display: block; overflow-wrap: anywhere; color: var(--ink); font-size: .92rem; font-weight: 800;
}
.result-why { margin: 0; color: var(--ink-soft); font-size: .82rem; }
.result-warnings { margin: 12px 0; color: var(--danger); font-size: .8rem; }
.result-warnings p { margin: 5px 0; }
.breakdown { margin-top: 18px; border-top: 1px solid var(--line); }
.breakdown > summary {
  display: flex; justify-content: space-between; gap: 10px; padding: 13px 0;
  color: var(--ink); font-size: .86rem; font-weight: 800; cursor: pointer;
}
.breakdown > summary span { color: var(--ink-faint); font-size: .75rem; }
.calculation-metrics {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin: 2px 0 12px;
}
.calculation-metrics > div { padding: 10px 11px; border-radius: var(--radius-sm); background: var(--panel-2); }
.calculation-metrics span { display: block; color: var(--ink-faint); font-size: .7rem; }
.calculation-metrics strong { color: var(--ink); font-size: .92rem; }
.table-scroll { max-width: 100%; overflow-x: auto; }
.wall-table { width: 100%; border-collapse: collapse; font-size: .78rem; white-space: nowrap; }
.wall-table th, .wall-table td { padding: 8px 7px; border-bottom: 1px solid var(--line); text-align: right; }
.wall-table thead th { color: var(--ink-faint); font-size: .65rem; letter-spacing: .04em; text-transform: uppercase; }
.wall-table th:first-child { text-align: left; }
.wall-table tbody th { color: var(--ink); }
.wall-table tbody th span { display: block; color: var(--ink-faint); font-size: .65rem; font-weight: 500; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.btn {
  min-height: 42px; padding: 8px 13px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--panel-2); color: var(--ink); font-size: .8rem; font-weight: 750; cursor: pointer;
}
.btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-small { min-height: 36px; padding: 6px 10px; }
.reset-inputs { flex-basis: 100%; justify-self: start; color: var(--ink-faint); text-align: left; }
.clipboard-fallback { position: fixed; left: -9999px; top: 0; }

.content { max-width: 74ch; margin: 44px auto 0; }
.learning-disclosure {
  padding: 0 17px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel);
}
.learning-disclosure > summary {
  padding: 16px 0; color: var(--ink); font-size: 1rem; font-weight: 800; cursor: pointer;
}
.learning-content { padding: 0 2px 20px; }
.content h2 { margin: 30px 0 9px; font-size: 1.25rem; }
.content h3 { font-size: 1rem; }
.content p, .content li { color: var(--ink-soft); }
.content .intro { color: var(--ink); font-size: 1.04rem; }
.content li { margin: 7px 0; }
.faq details {
  margin: 8px 0; padding: 0 13px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel);
}
.faq summary { padding: 12px 0; color: var(--ink); font-weight: 700; cursor: pointer; }

.site-footer { margin-top: 52px; border-top: 1px solid var(--line); }
.footer-inner { max-width: var(--maxw); margin: 0 auto; padding: 25px 20px 42px; }
.footer-inner > span, .footer-inner > a { margin-right: 12px; font-size: .8rem; }
.footer-inner > p { max-width: 68ch; margin: 11px 0 0; color: var(--ink-faint); font-size: .74rem; }
.special-calculators { margin: 0 0 20px; color: var(--ink-soft); font-size: .82rem; }
.special-calculators > summary { width: fit-content; color: var(--accent-2); font-weight: 750; cursor: pointer; }
.special-calculators nav { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 10px; }
.special-calculators a { color: var(--ink-soft); font-size: .78rem; }
.special-calculators a[aria-current="page"] { color: var(--accent-2); font-weight: 750; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 12px; color: var(--ink-faint); font-size: .8rem; }
.footer-note { max-width: 68ch; margin: 11px 0 0; color: var(--ink-faint); font-size: .74rem; }
.legal-page { max-width: 72ch; margin: 0 auto; padding: 16px 20px 48px; }
.legal-copy { color: var(--ink-soft); }
.legal-copy h1, .legal-copy h2, .legal-copy h3 { color: var(--ink); }
dialog[data-legal-dialog] {
  width: min(680px, calc(100% - 28px)); max-height: min(84vh, 760px); padding: 0;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--panel); color: var(--ink); box-shadow: var(--shadow);
}
dialog[data-legal-dialog]::backdrop { background: rgba(15, 11, 7, .72); backdrop-filter: blur(3px); }
.legal-body, [data-legal-body] { max-height: 80vh; padding: 20px 24px 26px; overflow: auto; }
.legal-close-row { position: sticky; top: 0; z-index: 1; display: flex; justify-content: flex-end; padding: 4px 0 12px; background: var(--panel); }
.legal-dialog-head {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 13px 18px; border-bottom: 1px solid var(--line);
}
.legal-dialog-head button {
  padding: 6px 10px; border: 1px solid var(--line-strong); border-radius: 8px;
  background: var(--panel-2); color: var(--ink); cursor: pointer;
}

.mobile-result-dock { display: none; }
.result-dialog {
  width: min(520px, calc(100% - 28px)); max-height: min(84vh, 720px); padding: 0;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  background: var(--panel); color: var(--ink); box-shadow: var(--shadow);
}
.result-dialog::backdrop { background: rgba(15, 11, 7, .76); backdrop-filter: blur(3px); }
.result-dialog-head {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 13px 18px; border-bottom: 1px solid var(--line);
}
.result-dialog-head button {
  padding: 6px 10px; border: 1px solid var(--line-strong); border-radius: 8px;
  background: var(--panel-2); color: var(--ink); cursor: pointer;
}
[data-result-dialog-summary] { padding: 18px; overflow: auto; }
.dialog-result-title { margin: 3px 0 8px; font-size: 1.55rem; }
.mobile-result-list { margin: 14px 0; }
.mobile-result-list > div {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: 12px;
  padding: 10px 0; border-bottom: 1px solid var(--line);
}
.mobile-result-list dt { color: var(--ink-faint); font-size: .76rem; }
.mobile-result-list dd { margin: 0; color: var(--ink); font-size: .86rem; font-weight: 750; text-align: right; }
.mobile-result-list dd span { display: block; color: var(--ink-faint); font-size: .7rem; font-weight: 500; }
.result-dialog-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 16px; }
.breakdown-link { width: 100%; margin-top: 9px; }

#toast {
  position: fixed; left: 50%; bottom: 22px; z-index: 80; max-width: calc(100% - 28px);
  padding: 10px 16px; border-radius: var(--radius-sm); background: var(--ink); color: var(--bg);
  font-size: .82rem; font-weight: 750; opacity: 0; pointer-events: none;
  transform: translate(-50%, 14px); transition: opacity .18s ease, transform .18s ease; box-shadow: var(--shadow);
}
#toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
#toast.has-action { pointer-events: auto; }
.toast-undo {
  margin-left: 12px; padding: 2px 0; border: 0; border-bottom: 1px solid currentColor;
  background: transparent; color: inherit; font-weight: 850; cursor: pointer;
}

@media (min-width: 900px) {
  .calc, .calculator, .calculator-grid { grid-template-columns: minmax(340px, 360px) minmax(0, 1fr); gap: 22px; }
  .panel--output, .output-column, .calculator > .preview { position: sticky; top: 16px; }
  .panel { padding: 20px; }
}

@media (max-width: 899px) {
  html.has-result-dock body { padding-bottom: calc(82px + env(safe-area-inset-bottom)); }
  .mobile-result-dock {
    position: fixed; z-index: 65; right: 12px; bottom: calc(10px + env(safe-area-inset-bottom)); left: 12px;
    display: block; transition: opacity .14s ease, transform .14s ease;
  }
  .mobile-result-dock > button {
    width: 100%; min-height: 58px; padding: 9px 14px; border: 1px solid var(--line-strong);
    border-radius: 14px; background: var(--ink); color: var(--bg); box-shadow: var(--shadow);
    text-align: left; cursor: pointer;
  }
  .dock-result-title { display: block; font-size: .92rem; font-weight: 850; }
  .dock-result-meta { display: block; margin-top: 1px; opacity: .78; font-size: .7rem; }
  body.has-calculator-focus .mobile-result-dock { opacity: 0; transform: translateY(18px); pointer-events: none; }
  .result-dialog {
    width: 100%; max-width: none; max-height: min(86dvh, 720px); margin: auto 0 0;
    border-width: 1px 0 0; border-radius: 20px 20px 0 0;
  }
  [data-result-dialog-summary] { padding-bottom: calc(18px + env(safe-area-inset-bottom)); }
  #toast { bottom: calc(84px + env(safe-area-inset-bottom)); }
}

@media (max-width: 480px) {
  .site-header, main { padding-left: 14px; padding-right: 14px; }
  .hero { margin-top: 8px; margin-bottom: 14px; }
  .hero h1 { font-size: 1.72rem; }
  .field-grid, .opening-row { grid-template-columns: 1fr; }
  .result-metrics, .calculation-metrics { grid-template-columns: 1fr; }
  .result-actions .btn { flex: 1 1 calc(50% - 8px); }
  .diagram-cell figcaption { display: block; }
  .diagram-cell figcaption span { display: block; }
  .segmented { grid-auto-flow: row; grid-template-columns: repeat(2, 1fr); }
}

@media print {
  @page { margin: 14mm; }
  :root { color-scheme: light; --bg: #fff; --panel: #fff; --panel-2: #fff; --ink: #111; --ink-soft: #333; --ink-faint: #555; --line: #bbb; --line-strong: #777; --paper: #ddd; }
  body { background: #fff; color: #111; font-size: 11pt; }
  .site-header, .hero .tagline, .trust-line, .panel--inputs, .controls,
  .preview-toolbar, .preview-appearance, #room-canvas, [data-room-fallback], .result-actions, .content,
  .site-footer, #toast, #theme-toggle, .skip-link { display: none !important; }
  main { max-width: none; padding: 0; }
  .hero { margin: 0 0 10mm; }
  .hero h1 { font-size: 18pt; }
  .calc, .calculator, .calculator-grid { display: block; }
  .panel, .panel--output, .output-column { position: static; padding: 0; border: 0; box-shadow: none; }
  #diagram, [data-diagram] { display: grid !important; grid-template-columns: repeat(2, 1fr); break-inside: avoid; margin-bottom: 8mm; }
  .wpc-diagram { min-height: 0; max-height: 70mm; }
  .result-card, .breakdown { break-inside: avoid; }
  .result-metrics { grid-template-columns: repeat(4, 1fr); }
  .breakdown { display: block; }
  .mobile-result-dock, .result-dialog { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}