.builder-page { padding: 48px 0 96px; background: #efefec; }
.builder-heading { display: grid; grid-template-columns: 1fr minmax(300px, 520px); align-items: end; gap: 48px; margin-bottom: 32px; }
.builder-heading h1 { max-width: 15ch; margin: 0; font-size: clamp(42px, 5vw, 68px); line-height: 1; letter-spacing: -.035em; text-wrap: balance; }
.builder-heading > p { max-width: 52ch; margin: 0; color: var(--color-muted); font-size: 17px; }

.builder-workspace { display: grid; grid-template-columns: minmax(270px, 310px) minmax(500px, 1fr) minmax(290px, 330px); gap: 16px; align-items: start; }
.builder-controls, .builder-stage-panel, .builder-summary { min-width: 0; background: var(--color-paper); border-radius: 12px; }
.builder-controls { overflow: hidden; }
.builder-mobile-tabs { display: none; }
.builder-controls details + details { border-top: 1px solid var(--color-line); }
.builder-controls summary { min-height: 62px; display: flex; align-items: center; gap: 12px; padding: 12px 16px; cursor: pointer; font-size: 15px; font-weight: 700; list-style: none; }
.builder-controls summary::-webkit-details-marker { display: none; }
.builder-controls summary::after { content: "+"; margin-left: auto; color: var(--color-muted); font-size: 22px; font-weight: 400; }
.builder-controls details[open] summary::after { content: "−"; }
.builder-controls summary > span { width: 30px; height: 30px; display: grid; place-items: center; flex: 0 0 auto; color: var(--color-ink); background: var(--color-signal); border-radius: 50%; font-size: 13px; }
.builder-control-body { padding: 0 16px 20px; }
.builder-control-body fieldset { margin-bottom: 18px; }
.builder-segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.builder-segmented input, .swatch-list input { position: absolute; opacity: 0; pointer-events: none; }
.builder-segmented span { min-height: 44px; display: grid; place-items: center; padding: 0 10px; background: var(--color-panel); border: 1px solid transparent; border-radius: var(--radius); cursor: pointer; font-size: 13px; font-weight: 700; }
.builder-segmented input:checked + span { background: var(--color-signal); border-color: var(--color-ink); }
.builder-segmented input:focus-visible + span, .swatch-list input:focus-visible + span { outline: 3px solid var(--color-link); outline-offset: 2px; }
.builder-range { display: block; margin-top: 18px; }
.side-wall-control[hidden], .add-wall-field[hidden] { display: none; }
.builder-range > span { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 7px; font-size: 13px; font-weight: 700; }
.builder-range output { color: var(--color-muted); }
.builder-range input { width: 100%; accent-color: var(--color-ink); }
.swatch-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.swatch-list label { min-width: 0; cursor: pointer; }
.swatch-list span { min-height: 58px; display: flex; flex-direction: column; justify-content: end; padding: 6px; color: var(--swatch-text, var(--color-ink)); background: var(--swatch); border: 2px solid transparent; border-radius: var(--radius); font-size: 10px; font-weight: 700; line-height: 1.1; }
.swatch-list span[data-swatch="wood"], .swatch-list span[data-swatch="oak"] { background-color: var(--swatch); background-image: repeating-linear-gradient(84deg, rgba(52,30,12,.14) 0 1px, transparent 1px 8px), linear-gradient(115deg, transparent 25%, rgba(255,255,255,.12) 45%, transparent 62%); }
.swatch-list span[data-swatch="light-stone"], .swatch-list span[data-swatch="dark-stone"] { background-color: var(--swatch); background-image: linear-gradient(128deg, transparent 26%, rgba(255,255,255,.28) 27%, transparent 29%), linear-gradient(48deg, transparent 58%, rgba(18,18,18,.16) 59%, transparent 61%), radial-gradient(circle at 72% 25%, rgba(18,18,18,.18) 0 1px, transparent 2px); }
.swatch-list input:checked + span { border-color: var(--color-ink); box-shadow: inset 0 0 0 2px var(--color-paper); }
.module-palette { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.module-palette button { min-height: 74px; display: flex; flex-direction: column; justify-content: space-between; align-items: flex-start; padding: 10px; color: var(--color-ink); background: var(--color-panel); border: 1px solid transparent; border-radius: var(--radius); cursor: pointer; text-align: left; font-size: 12px; font-weight: 700; }
.module-palette button:hover { border-color: var(--color-ink); background: var(--color-signal); }
.module-palette button span { color: var(--color-muted); font-size: 10px; font-weight: 400; }
.add-wall-field { margin-bottom: 14px; }

.builder-stage-panel { position: sticky; top: 12px; padding: 16px; }
.builder-stage-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; padding: 4px 4px 14px; }
.builder-stage-head .eyebrow { margin-bottom: 3px; }
.builder-stage-head h2 { margin: 0; font-size: 28px; line-height: 1.1; }
.view-actions { display: flex; gap: 5px; }
.view-actions button { min-height: 36px; padding: 0 10px; background: var(--color-panel); border: 1px solid var(--color-line); border-radius: var(--radius); cursor: pointer; font-size: 11px; font-weight: 700; }
.view-actions button:hover { background: var(--color-signal); border-color: var(--color-ink); }
.builder-canvas-wrap { position: relative; height: 610px; overflow: hidden; background: #d9d4cb; border-radius: var(--radius); }
#kitchen-canvas { width: 100%; height: 100%; display: block; touch-action: none; }
.canvas-help { position: absolute; left: 12px; bottom: 12px; display: flex; flex-wrap: wrap; gap: 6px; pointer-events: none; }
.canvas-help span { padding: 5px 8px; color: var(--color-paper); background: rgba(17,17,17,.72); border-radius: 999px; font-size: 10px; }
.canvas-fallback { position: absolute; inset: 20px; display: grid; place-content: center; padding: 24px; text-align: center; background: var(--color-panel); border-radius: var(--radius); }
.canvas-fallback[hidden] { display: none; }
.space-meter { padding: 14px 4px 2px; }
.space-meter > div:first-child { display: flex; justify-content: space-between; gap: 18px; font-size: 12px; }
.space-meter strong { font-size: 12px; }
.space-track { height: 7px; margin-top: 8px; overflow: hidden; background: var(--color-panel); border-radius: 999px; }
.space-track i { width: 0; height: 100%; display: block; background: var(--color-signal); border-radius: inherit; transition: width .18s ease, background-color .18s ease; }
.space-meter.is-over .space-track i { background: var(--color-danger); }
.space-meter.is-over strong { color: var(--color-danger); }

.builder-summary { padding: 20px; }
.builder-summary-head { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 4px 12px; }
.builder-summary-head .eyebrow { grid-column: 1 / -1; margin-bottom: 2px; }
.builder-summary-head h2 { margin: 0; font-size: 26px; line-height: 1.1; }
.builder-summary-head button { padding: 3px 0; color: var(--color-link); background: transparent; border: 0; cursor: pointer; font-size: 12px; font-weight: 700; }
.selected-modules { max-height: 380px; margin: 18px 0; padding: 0; overflow: auto; list-style: none; border-block: 1px solid var(--color-line); }
.selected-module { display: grid; grid-template-columns: 1fr auto; gap: 4px 8px; padding: 11px 0; border-bottom: 1px solid var(--color-line); }
.selected-module:last-child { border-bottom: 0; }
.selected-module.is-automatic { padding: 12px; background: #fff8cf; border: 1px solid #e3c400; border-radius: var(--radius); }
.selected-module.is-automatic > span { grid-column: 1 / -1; }
.selected-module strong { font-size: 13px; }
.selected-module > span { grid-column: 1; color: var(--color-muted); font-size: 11px; }
.module-actions { grid-column: 2; grid-row: 1 / 3; display: flex; align-items: center; gap: 3px; }
.module-actions button { width: 31px; height: 31px; display: grid; place-items: center; padding: 0; background: var(--color-panel); border: 0; border-radius: 50%; cursor: pointer; font-size: 13px; }
.module-actions button:hover { color: var(--color-paper); background: var(--color-ink); }
.empty-modules { padding: 24px 0; color: var(--color-muted); font-size: 13px; }
.builder-totals { display: grid; grid-template-columns: 1fr 1fr; background: var(--color-panel); border-radius: var(--radius); }
.builder-totals div { padding: 12px; }
.builder-totals div + div { border-left: 1px solid var(--color-line); }
.builder-totals span, .builder-totals strong { display: block; }
.builder-totals span { color: var(--color-muted); font-size: 10px; }
.builder-totals strong { margin-top: 3px; font-size: 17px; }
.builder-price-note { margin: 13px 0 20px; color: var(--color-muted); font-size: 12px; }
.builder-lead-form { padding-top: 18px; border-top: 1px solid var(--color-line); }
.builder-lead-form h3 { margin: 0 0 16px; font-size: 20px; }
.builder-lead-form .field-label { margin-top: 11px; }
.builder-lead-form .button { width: 100%; }
.kitchen-builder-link { width: fit-content; margin-top: 24px; }

.assistant-launch { position: fixed; right: 20px; bottom: 20px; z-index: 30; min-height: 48px; padding: 0 18px; color: var(--color-ink); background: var(--color-signal); border: 1px solid var(--color-ink); border-radius: 999px; box-shadow: 0 8px 30px rgba(17,17,17,.18); cursor: pointer; font: inherit; font-size: 13px; font-weight: 800; }
.assistant-launch span { margin-right: 5px; }
.assistant-launch:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(17,17,17,.22); }
.assistant-launch:focus-visible { outline: 3px solid var(--color-link); outline-offset: 3px; }
.kitchen-assistant { position: fixed; inset: auto 20px 20px auto; width: min(410px, calc(100vw - 40px)); max-height: min(720px, calc(100vh - 40px)); margin: 0; padding: 0; overflow: hidden; color: var(--color-ink); background: var(--color-paper); border: 1px solid var(--color-ink); border-radius: 16px; box-shadow: 0 24px 80px rgba(17,17,17,.28); }
.kitchen-assistant::backdrop { background: rgba(17,17,17,.24); }
.assistant-head { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 16px; border-bottom: 1px solid var(--color-line); }
.assistant-head > div { min-width: 0; display: flex; align-items: center; gap: 11px; }
.assistant-head strong, .assistant-head small { display: block; }
.assistant-head strong { font-size: 16px; }
.assistant-head small { margin-top: 2px; color: var(--color-muted); font-size: 11px; }
.assistant-mark { width: 34px; height: 34px; display: grid; place-items: center; flex: 0 0 auto; background: var(--color-signal); border-radius: 50%; }
.assistant-head > button { width: 38px; height: 38px; flex: 0 0 auto; color: var(--color-ink); background: var(--color-panel); border: 0; border-radius: 50%; cursor: pointer; font-size: 24px; line-height: 1; }
.assistant-messages { min-height: 180px; max-height: min(360px, calc(100vh - 330px)); padding: 16px; overflow-y: auto; background: #f3f2ee; }
.assistant-message { width: fit-content; max-width: 88%; margin: 0 0 10px; padding: 10px 12px; border-radius: 12px; font-size: 13px; line-height: 1.45; }
.assistant-message.is-bot { background: var(--color-paper); border-bottom-left-radius: 3px; }
.assistant-message.is-user { margin-left: auto; background: var(--color-signal); border-bottom-right-radius: 3px; }
.assistant-prompts { display: flex; gap: 6px; padding: 12px 16px 0; overflow-x: auto; }
.assistant-prompts button { min-height: 32px; flex: 0 0 auto; padding: 0 10px; color: var(--color-ink); background: var(--color-panel); border: 1px solid var(--color-line); border-radius: 999px; cursor: pointer; font-size: 11px; }
.assistant-prompts button:hover { border-color: var(--color-ink); }
.assistant-form { padding: 14px 16px 10px; }
.assistant-form label { display: block; margin-bottom: 7px; font-size: 12px; font-weight: 700; }
.assistant-form > div { display: grid; grid-template-columns: 1fr auto; }
.assistant-form input { min-width: 0; min-height: 46px; padding: 0 12px; border: 1px solid var(--color-ink); border-right: 0; border-radius: var(--radius) 0 0 var(--radius); font: inherit; font-size: 13px; }
.assistant-form button { min-height: 46px; padding: 0 13px; color: var(--color-ink); background: var(--color-signal); border: 1px solid var(--color-ink); border-radius: 0 var(--radius) var(--radius) 0; cursor: pointer; font-size: 12px; font-weight: 800; }
.assistant-local-note { margin: 0; padding: 0 16px 14px; color: var(--color-muted); font-size: 10px; }

@media (max-width: 1250px) {
  .builder-workspace { grid-template-columns: minmax(270px, 320px) minmax(0, 1fr); }
  .builder-summary { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 420px); gap: 28px; }
  .builder-summary-head, .selected-modules, .builder-totals, .builder-price-note { grid-column: 1; }
  .builder-lead-form { grid-column: 2; grid-row: 1 / 6; padding: 0 0 0 28px; border-top: 0; border-left: 1px solid var(--color-line); }
}

@media (max-width: 900px) {
  .builder-page { padding-top: 32px; }
  .builder-heading { grid-template-columns: 1fr; gap: 16px; }
  .builder-heading h1 { font-size: 48px; }
  .builder-workspace { grid-template-columns: 1fr; }
  .builder-stage-panel { position: static; grid-row: 1; }
  .builder-controls { grid-row: 2; }
  .builder-summary { grid-column: auto; grid-row: 3; }
  .builder-canvas-wrap { height: 500px; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: calc(var(--builder-mobile-stage-height, 420px) + 68px); }
  .builder-page { padding: 12px 0 48px; }
  .builder-heading { gap: 6px; margin-bottom: 10px; }
  .builder-heading .eyebrow { display: none; }
  .builder-heading h1 { max-width: none; font-size: 27px; line-height: 1.04; }
  .builder-heading > p { max-width: 46ch; font-size: 12px; line-height: 1.4; }
  .builder-workspace { gap: 10px; }
  .builder-stage-panel { position: sticky; z-index: 18; top: 0; padding: 8px; border: 1px solid var(--color-line); box-shadow: 0 10px 28px rgba(17,17,17,.12); }
  .builder-stage-head { min-height: 42px; align-items: center; flex-direction: row; padding: 0 2px 7px; }
  .builder-stage-head .eyebrow { display: none; }
  .builder-stage-head h2 { font-size: 19px; }
  .view-actions { width: auto; }
  .view-actions button { min-height: 36px; padding: 0 8px; }
  .builder-canvas-wrap { height: clamp(280px, 38dvh, 340px); }
  .canvas-help span:last-child { display: none; }
  .space-meter { padding: 9px 2px 0; }
  .builder-controls { overflow: visible; border: 1px solid var(--color-line); box-shadow: 0 8px 22px rgba(17,17,17,.06); }
  .builder-mobile-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 5px; padding: 7px; background: var(--color-paper); border-bottom: 1px solid var(--color-line); }
  .builder-controls.mobile-tabs-docked { padding-top: 59px; }
  .builder-controls.mobile-tabs-docked .builder-mobile-tabs { position: fixed; z-index: 20; top: var(--builder-mobile-stage-height, 420px); right: 12px; left: 12px; border: 1px solid var(--color-line); border-radius: 0 0 10px 10px; box-shadow: 0 8px 20px rgba(17,17,17,.12); }
  .builder-mobile-tabs button { min-width: 0; min-height: 44px; padding: 0 6px; color: var(--color-muted); background: var(--color-panel); border: 1px solid transparent; border-radius: var(--radius); cursor: pointer; font-size: 11px; font-weight: 800; }
  .builder-mobile-tabs button[aria-selected="true"] { color: var(--color-ink); background: var(--color-signal); border-color: var(--color-ink); }
  .builder-controls details > summary { display: none; }
  .builder-controls details:not([open]) { display: none; }
  .builder-controls details + details { border-top: 0; }
  .builder-control-body { padding: 14px 14px 18px; }
  .builder-control-body fieldset { margin-bottom: 14px; }
  .builder-range { margin-top: 14px; }
  .swatch-list { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .swatch-list span { min-height: 64px; }
  .module-palette { grid-template-columns: repeat(2, minmax(0, 1fr)); max-height: 34dvh; padding-right: 2px; overflow-y: auto; overscroll-behavior: contain; }
  .module-palette button { min-height: 66px; }
  .builder-summary { display: block; padding: 18px; }
  .builder-lead-form { margin-top: 20px; padding: 20px 0 0; border-top: 1px solid var(--color-line); border-left: 0; }
  .selected-modules { max-height: none; }
}

@media (max-width: 430px) {
  .builder-heading h1 { font-size: 25px; }
  .builder-canvas-wrap { height: clamp(270px, 37dvh, 320px); }
  .builder-stage-head h2 { font-size: 18px; }
  .assistant-launch { right: 12px; bottom: 12px; min-height: 44px; padding-inline: 14px; }
  .kitchen-assistant { inset: auto 8px 8px; width: calc(100vw - 16px); max-height: calc(100vh - 16px); border-radius: 14px; }
  .assistant-messages { max-height: calc(100vh - 350px); }
}

@media (prefers-reduced-motion: reduce) {
  .space-track i { transition: none; }
  .assistant-launch:hover { transform: none; }
}