@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@600;800&family=Noto+Kufi+Arabic:wght@600;800&family=Vazirmatn:wght@400;500;700&display=swap");

/* ساختیار — «برگ نقشه». Tokens first; every component below uses them. */
:root {
  /* core palette */
  --concrete: #DCD7CF;
  --paper: #EEEAE4;
  --formwork: #3A3531;
  --ink: #1F1C1A;
  --brick: #C99A82;
  --orange: #E2620E;
  --line: #9C948A;
  /* text-safe derivatives */
  --ink-soft: #57504A;
  --brick-deep: #8C4A33;
  --orange-bright: #F28A44;
  --paper-soft: #BDB5AB;
  --grid-minor: #1F1C1A0D;
  --grid-major: #1F1C1A17;

  --font-head: "Noto Kufi Arabic", "Vazirmatn", Tahoma, sans-serif;
  --font-body: "Vazirmatn", Tahoma, "Segoe UI", sans-serif;

  /* six sizes, no more */
  --fs-1: 0.875rem;
  --fs-2: 1.0625rem;
  --fs-3: 1.25rem;
  --fs-4: clamp(1.5rem, 1.25rem + 1vw, 2rem);
  --fs-5: clamp(1.85rem, 1.3rem + 2.2vw, 3rem);
  --fs-6: clamp(2.1rem, 1.3rem + 3.6vw, 4.25rem);

  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 1rem;
  --sp-4: 1.5rem;
  --sp-5: 2.5rem;
  --sp-6: 4rem;
  --sp-7: 6rem;

  --wrap: 76rem;
  --rule: 1px solid var(--ink);
  --rule-soft: 1px solid var(--line);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

html[lang="en"] {
  --font-head: "Archivo", "Noto Kufi Arabic", Arial, sans-serif;
}

/* ---------- reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-2);
  line-height: 1.85;
  color: var(--ink);
  background-color: var(--concrete);
  background-image:
    linear-gradient(to right, var(--grid-major) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-major) 1px, transparent 1px),
    linear-gradient(to right, var(--grid-minor) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-minor) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
}
html[lang="en"] body { line-height: 1.65; }
img, svg { display: block; max-width: 100%; }
p { margin: 0 0 var(--sp-3); }
p:last-child { margin-block-end: 0; }
ul, ol { margin: 0; padding: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.35;
  margin: 0 0 var(--sp-3);
  overflow-wrap: break-word;
  hyphens: none;
  text-wrap: balance;
}
html[lang="en"] :is(h1, h2, h3, h4) { line-height: 1.12; letter-spacing: -0.01em; }
h1 { font-size: var(--fs-6); }
h2 { font-size: var(--fs-5); }
h3 { font-size: var(--fs-3); font-weight: 600; }
h4 { font-size: var(--fs-2); font-weight: 600; }

a { color: var(--brick-deep); text-decoration-thickness: 2px; text-underline-offset: 0.3em; }
a:hover { color: var(--ink); text-decoration-color: var(--orange); }

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
  box-shadow: 0 0 0 7px var(--orange);
}

.sr-only {
  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: absolute;
  inset-inline-start: var(--sp-3);
  inset-block-start: -10rem;
  z-index: 100;
  padding: var(--sp-2) var(--sp-3);
  background: var(--ink);
  color: var(--paper);
  font-weight: 700;
}
.skip-link:focus { inset-block-start: var(--sp-3); color: var(--paper); }

.wrap { width: min(100% - 2 * var(--sp-4), var(--wrap)); margin-inline: auto; }
.num { font-variant-numeric: tabular-nums; }
.ltr { direction: ltr; unicode-bidi: isolate; display: inline-block; }
.muted { color: var(--ink-soft); }

/* ---------- header & navigation ---------- */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 50;
  background: var(--paper);
  border-block-end: 2px solid var(--ink);
}
.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  min-block-size: 4.25rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  color: var(--ink);
  text-decoration: none;
}
.brand__mark { inline-size: 2.5rem; block-size: 2.5rem; flex: none; }
.brand__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-3);
  line-height: 1;
}
.brand:hover { color: var(--ink); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  font: 700 var(--fs-1) var(--font-body);
  color: var(--ink);
  background: transparent;
  border: 2px solid var(--ink);
  cursor: pointer;
  white-space: nowrap;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  inline-size: 1.25rem;
  block-size: 2px;
  background: var(--ink);
  transition: transform .2s var(--ease);
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before, .nav-toggle__bars::after { content: ""; position: absolute; inset-inline-start: 0; }
.nav-toggle__bars::before { inset-block-start: -6px; }
.nav-toggle__bars::after { inset-block-start: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

.site-nav { display: none; }
.site-nav[data-open="true"] {
  display: block;
  position: absolute;
  inset-inline: 0;
  inset-block-start: 100%;
  padding: var(--sp-3) var(--sp-4) var(--sp-4);
  background: var(--paper);
  border-block-end: 2px solid var(--ink);
  max-block-size: calc(100vh - 4.25rem);
  overflow-y: auto;
}
.site-nav__list { list-style: none; }
.site-nav__list a {
  display: block;
  padding: var(--sp-2) 0;
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
  border-block-end: var(--rule-soft);
}
.site-nav__list a:hover { color: var(--brick-deep); }
.site-nav__list a[aria-current="page"] {
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-decoration-thickness: 3px;
  text-underline-offset: 0.45em;
}
.site-nav__tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  margin-block-start: var(--sp-4);
}
.lang-switch {
  font-family: "Archivo", var(--font-body);
  font-weight: 600;
  font-size: var(--fs-1);
  color: var(--ink);
  padding: var(--sp-1) var(--sp-2);
  border: var(--rule);
  text-decoration: none;
}
html[lang="en"] .lang-switch { font-family: "Vazirmatn", var(--font-body); }
.lang-switch:hover { background: var(--ink); color: var(--paper); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.7rem 1.35rem;
  font: 700 var(--fs-2)/1.2 var(--font-body);
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .15s var(--ease), box-shadow .15s var(--ease), background-color .15s;
}
[dir="rtl"] .btn { box-shadow: -3px 3px 0 var(--ink); }
.btn:hover { color: var(--ink); transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
[dir="rtl"] .btn:hover { transform: translate(-2px, 2px); box-shadow: -1px 1px 0 var(--ink); }
.btn:active { transform: translate(3px, 3px); box-shadow: none; }
[dir="rtl"] .btn:active { transform: translate(-3px, 3px); box-shadow: none; }
.btn--primary { background: var(--orange); }
.btn--primary:hover { background: var(--orange-bright); }
.btn--ghost { background: transparent; }
.btn--ghost:hover { background: var(--paper); }
.btn--small { padding: 0.45rem 0.9rem; font-size: var(--fs-1); }
.section--dark .btn { border-color: var(--paper); box-shadow: 3px 3px 0 var(--paper); }
[dir="rtl"] .section--dark .btn { box-shadow: -3px 3px 0 var(--paper); }
.section--dark .btn--ghost { color: var(--paper); }
.section--dark .btn--ghost:hover { color: var(--ink); background: var(--paper); }
.btn__icon { inline-size: 1.1em; block-size: 1.1em; flex: none; }
.link-arrow {
  font-weight: 700;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  white-space: nowrap;
}
.actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center; }

/* ---------- sections ---------- */
.section { padding-block: var(--sp-6); }
.section--paper { background: var(--paper); border-block: var(--rule); }
.section--brick { background: var(--brick); border-block: 2px solid var(--ink); }
.section--dark { background: var(--formwork); color: var(--paper); }
.section--dark a:not(.btn) { color: var(--orange-bright); }
.section--dark .muted { color: var(--paper-soft); }

.section-head { max-inline-size: 46rem; margin-block-end: var(--sp-5); }
.section-head h2 { margin-block-end: var(--sp-2); }
.section-head p { color: var(--ink-soft); font-size: var(--fs-3); line-height: 1.7; }
.section--dark .section-head p { color: var(--paper-soft); }
.section--brick .section-head p { color: var(--ink); }

/* dimension rule: |———————| under headings */
.dim {
  position: relative;
  display: block;
  block-size: 12px;
  inline-size: min(100%, 18rem);
  margin-block: var(--sp-2) var(--sp-4);
  color: var(--line);
}
.dim::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-start: 5px;
  border-block-start: 1.5px solid currentColor;
}
.dim::after {
  content: "";
  position: absolute;
  inset: 0;
  border-inline: 1.5px solid currentColor;
}
.section--dark .dim { color: var(--orange-bright); }
.section--brick .dim { color: var(--ink); }

/* ---------- hero ---------- */
.hero { padding-block: var(--sp-5) var(--sp-6); }
.hero__grid { display: grid; gap: var(--sp-5); align-items: center; }
.hero__title { max-inline-size: 13ch; }
html[lang="en"] .hero__title { max-inline-size: 16ch; }
.hero__lead { font-size: var(--fs-3); line-height: 1.75; max-inline-size: 36rem; margin-block-end: var(--sp-4); }
.hero__figure { margin: 0; }
.hero__figure figcaption, .figure-note {
  margin-block-start: var(--sp-2);
  font-size: var(--fs-1);
  color: var(--ink-soft);
  border-block-start: var(--rule-soft);
  padding-block-start: var(--sp-2);
}
.drawing { inline-size: 100%; block-size: auto; color: var(--ink); }
.drawing .thin { stroke: var(--line); }
.drawing text { font-family: var(--font-body); fill: var(--ink-soft); }

/* ---------- title block (facts / project metadata) ---------- */
.titleblock {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--paper);
  border: 2px solid var(--ink);
}
.titleblock__cell {
  margin: 0;
  padding: var(--sp-3);
  border-inline-end: var(--rule);
  border-block-end: var(--rule);
  min-inline-size: 0;
}
.titleblock__label {
  display: block;
  font-size: var(--fs-1);
  color: var(--ink-soft);
  font-weight: 500;
}
.titleblock__value {
  display: block;
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-6);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.titleblock__value--text { font-size: var(--fs-3); line-height: 1.5; padding-block-start: var(--sp-2); }
.titleblock__cell--wide { grid-column: 1 / -1; }
.titleblock__unit { font-size: var(--fs-3); font-weight: 600; }
.titleblock--compact { grid-template-columns: repeat(3, minmax(0, 1fr)); border-width: 1px; }
.titleblock--compact .titleblock__cell { padding: var(--sp-2); }
.titleblock--compact .titleblock__value { font-size: var(--fs-3); }

/* ---------- schedule (services list) ---------- */
.schedule { list-style: none; border-block-start: 2px solid var(--ink); }
.schedule__row {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: var(--sp-2) var(--sp-4);
  padding-block: var(--sp-4);
  border-block-end: var(--rule);
}
.schedule__icon { inline-size: 3.5rem; block-size: 3.5rem; grid-row: span 2; color: var(--ink); }
.schedule__name { margin: 0; font-size: var(--fs-4); }
.schedule__text { color: var(--ink-soft); margin: 0; }
.schedule__link { grid-column: 2; justify-self: start; }

/* ---------- estimator teaser + estimator ---------- */
.split { display: grid; gap: var(--sp-5); align-items: start; }
.spec {
  margin: 0;
  background: var(--paper);
  border: 2px solid var(--ink);
}
.spec__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  border-block-end: var(--rule);
}
.spec__row:last-child { border-block-end: 0; }
.spec dt, .spec dd { margin: 0; padding: var(--sp-2) var(--sp-3); }
.spec dt { font-weight: 700; border-inline-end: var(--rule); }
.spec dd { color: var(--ink-soft); }

.bars { list-style: none; display: grid; gap: var(--sp-3); }
.bars__row { display: grid; gap: var(--sp-1); }
.bars__head { display: flex; justify-content: space-between; gap: var(--sp-3); font-weight: 700; }
.bars__value { font-variant-numeric: tabular-nums; white-space: nowrap; }
.bars__track {
  block-size: 1.25rem;
  background: var(--paper);
  border: 1px solid var(--ink);
}
.bars__fill {
  display: block;
  block-size: 100%;
  inline-size: calc(var(--w, 0) * 1%);
  background: repeating-linear-gradient(-45deg, var(--orange) 0 6px, #C95408 6px 8px);
  border-inline-end: 2px solid var(--ink);
  transition: inline-size .6s var(--ease);
}
.bars__fill--brick { background: repeating-linear-gradient(-45deg, var(--brick) 0 6px, #B8866D 6px 8px); }

.estimator { display: grid; gap: var(--sp-5); align-items: start; }
.estimator__form, .estimator__result {
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: var(--sp-4);
}
.estimator__total {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-5);
  line-height: 1.3;
  font-variant-numeric: tabular-nums;
  margin-block: var(--sp-2) var(--sp-4);
}
.choice { border: 0; margin: 0 0 var(--sp-4); padding: 0; }
.choice legend { font-weight: 700; margin-block-end: var(--sp-2); padding: 0; }
.choice__options { display: flex; flex-wrap: wrap; gap: 0; }
.choice__option { position: relative; }
.choice__option input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.choice__option span {
  display: block;
  padding: var(--sp-2) var(--sp-3);
  border: 2px solid var(--ink);
  margin-inline-end: -2px;
  background: var(--concrete);
  white-space: nowrap;
}
.choice__option input:checked + span { background: var(--ink); color: var(--paper); }
.choice__option input:focus-visible + span { outline: 3px solid var(--ink); outline-offset: 3px; box-shadow: 0 0 0 7px var(--orange); position: relative; z-index: 1; }

.estimate-table {
  inline-size: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  margin-block: var(--sp-4);
}
.estimate-table caption { text-align: start; font-weight: 700; padding-block-end: var(--sp-2); }
.estimate-table th, .estimate-table td {
  padding: var(--sp-2) var(--sp-3);
  border-block-end: var(--rule);
  text-align: start;
}
.estimate-table thead th { border-block-end: 2px solid var(--ink); font-size: var(--fs-1); color: var(--ink-soft); }
.estimate-table td:last-child, .estimate-table th:last-child { text-align: end; white-space: nowrap; }
.estimate-table tfoot th, .estimate-table tfoot td { font-weight: 700; border-block-end: 2px solid var(--ink); }

.note {
  margin: 0;
  padding: var(--sp-3) var(--sp-4);
  background: var(--concrete);
  border-inline-start: 6px solid var(--orange);
  font-size: var(--fs-1);
  line-height: 1.9;
}
.note strong { display: block; font-size: var(--fs-2); }

/* ---------- projects ---------- */
.drawings { display: grid; gap: var(--sp-4); list-style: none; }
.project-card {
  display: grid;
  gap: var(--sp-3);
  margin: 0;
  padding: var(--sp-3);
  background: var(--paper);
  border: 2px solid var(--ink);
}
.project-card__drawing { aspect-ratio: 4 / 3; inline-size: 100%; block-size: auto; border-block-end: var(--rule-soft); }
.project-card__title { margin: 0; font-size: var(--fs-3); }
.project-card__type { margin: 0; color: var(--ink-soft); font-size: var(--fs-1); }

/* ---------- process timeline (gantt) ---------- */
.timeline { list-style: none; border-block-start: 2px solid var(--ink); }
.timeline__item {
  display: grid;
  gap: var(--sp-2);
  padding-block: var(--sp-3);
  border-block-end: var(--rule-soft);
}
.timeline__name { margin: 0; font-size: var(--fs-3); }
.timeline__text { margin: 0; color: var(--ink-soft); }
.timeline__track {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  block-size: 1rem;
  background-image: linear-gradient(to right, var(--line) 1px, transparent 1px);
  background-size: calc(100% / 12) 100%;
  border-inline-start: 1px solid var(--line);
}
.timeline__bar { block-size: 100%; background: var(--ink); }
.timeline__bar--p1 { grid-column: 1 / span 2; }
.timeline__bar--p2 { grid-column: 2 / span 3; }
.timeline__bar--p3 { grid-column: 4 / span 2; background: var(--orange); border: 1px solid var(--ink); }
.timeline__bar--p4 { grid-column: 5 / span 4; }
.timeline__bar--p5 { grid-column: 7 / span 5; background: var(--brick); border: 1px solid var(--ink); }
.timeline__bar--p6 { grid-column: 11 / span 2; background: var(--orange); border: 1px solid var(--ink); }

/* ---------- seals / certificates ---------- */
.seals { display: grid; gap: var(--sp-4); list-style: none; }
.seal {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: var(--sp-3);
  align-items: start;
  padding: var(--sp-4);
  background: var(--paper);
  border: 2px solid var(--ink);
}
.seal__mark { inline-size: 5.5rem; block-size: 5.5rem; color: var(--brick-deep); }
.seal__title { margin: 0 0 var(--sp-2); font-size: var(--fs-4); }
.seal p { margin: 0; }

/* ---------- FAQ ---------- */
.faq { border-block-start: 2px solid var(--ink); }
.faq__item { border-block-end: var(--rule); }
.faq__item summary {
  cursor: pointer;
  list-style: none;
  padding: var(--sp-3) 0;
  font-weight: 700;
  font-size: var(--fs-3);
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; font-family: var(--font-head); color: var(--brick-deep); flex: none; }
.faq__item[open] summary::after { content: "−"; }
.faq__answer { padding-block-end: var(--sp-4); max-inline-size: 46rem; }

/* ---------- contact band ---------- */
.callout { display: grid; gap: var(--sp-5); align-items: end; }
.phone-big {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-6);
  line-height: 1.2;
  direction: ltr;
  unicode-bidi: isolate;
  text-decoration: none;
  white-space: nowrap;
}
.section--dark .phone-big { color: var(--orange-bright); }
.section--dark .phone-big:hover { color: var(--paper); }
.address { font-style: normal; font-size: var(--fs-3); }
.cta-band { border-block-start: 2px solid var(--ink); padding-block: var(--sp-5); }

/* ---------- forms ---------- */
.form { display: grid; gap: var(--sp-3); }
.form__row { display: grid; gap: var(--sp-3); }
.form__field { display: grid; gap: var(--sp-1); }
.form__label { font-weight: 700; font-size: var(--fs-1); }
.form__hint { font-size: var(--fs-1); color: var(--ink-soft); margin: 0; }
.form__input {
  inline-size: 100%;
  padding: 0.65rem 0.8rem;
  font: 400 var(--fs-2)/1.5 var(--font-body);
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 0;
}
.form__input::placeholder { color: var(--ink-soft); }
select.form__input { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(-45deg, transparent 50%, var(--ink) 50%); background-position: left 1.1rem center, left 0.75rem center; background-size: 0.35rem 0.35rem; background-repeat: no-repeat; padding-inline-end: 0.8rem; padding-inline-start: 2.2rem; }
html[dir="ltr"] select.form__input { background-position: right 0.75rem center, right 1.1rem center; padding-inline-start: 0.8rem; padding-inline-end: 2.2rem; }
textarea.form__input { min-block-size: 8rem; resize: vertical; }
.form__input:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; box-shadow: 0 0 0 7px var(--orange); }
.form__field[data-state="error"] .form__input { border-color: #A3261B; border-width: 3px; }
.form__field[data-state="error"] .form__label::after { content: " — این خانه را پر کنید"; color: #A3261B; font-weight: 500; }
html[lang="en"] .form__field[data-state="error"] .form__label::after { content: " — required"; }
.form__status { margin: 0; font-weight: 700; min-block-size: 1.5em; }
.form__status[data-state="error"] { color: #A3261B; }
.form__status[data-state="sent"] { color: var(--ink); border-inline-start: 6px solid var(--orange); padding-inline-start: var(--sp-2); }

/* ---------- footer ---------- */
.site-footer {
  background: var(--formwork);
  color: var(--paper);
  padding-block: var(--sp-6) var(--sp-4);
  border-block-start: 6px solid var(--orange);
}
.site-footer a { color: var(--paper); text-decoration-color: var(--orange-bright); }
.site-footer a:hover { color: var(--orange-bright); }
.site-footer__grid { display: grid; gap: var(--sp-5); }
.site-footer .brand, .site-footer .brand:hover { color: var(--paper); }
.site-footer__title { font-size: var(--fs-2); margin-block-end: var(--sp-2); color: var(--paper-soft); font-family: var(--font-body); font-weight: 700; }
.site-footer__list { list-style: none; display: grid; gap: var(--sp-1); }
.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-block-start: var(--sp-5);
  padding-block-start: var(--sp-3);
  border-block-start: 1px solid var(--paper-soft);
  font-size: var(--fs-1);
  color: var(--paper-soft);
}

/* ---------- style guide helpers ---------- */
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr)); gap: var(--sp-3); list-style: none; }
.swatch { border: 2px solid var(--ink); background: var(--paper); }
.swatch__chip { block-size: 5rem; border-block-end: 2px solid var(--ink); }
.swatch__body { padding: var(--sp-2) var(--sp-3); font-size: var(--fs-1); }
.swatch__chip--concrete { background: var(--concrete); }
.swatch__chip--paper { background: var(--paper); }
.swatch__chip--formwork { background: var(--formwork); }
.swatch__chip--ink { background: var(--ink); }
.swatch__chip--brick { background: var(--brick); }
.swatch__chip--orange { background: var(--orange); }
.swatch__chip--line { background: var(--line); }
.type-row { display: grid; gap: var(--sp-1); padding-block: var(--sp-3); border-block-end: var(--rule-soft); }
.type-row__meta { font-size: var(--fs-1); color: var(--ink-soft); }
.fs-1 { font-size: var(--fs-1); } .fs-2 { font-size: var(--fs-2); } .fs-3 { font-size: var(--fs-3); }
.fs-4 { font-size: var(--fs-4); } .fs-5 { font-size: var(--fs-5); } .fs-6 { font-size: var(--fs-6); }
.demo-w-46 { --w: 46; } .demo-w-24 { --w: 24; } .demo-w-18 { --w: 18; } .demo-w-12 { --w: 12; }

/* ---------- motion: entrance reveal + drawing lines, only when allowed ---------- */
@media (prefers-reduced-motion: no-preference) {
  .draw-in {
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    animation: draw 1.6s var(--ease) .2s forwards;
  }
  .draw-in--late { animation-delay: .7s; }
  @keyframes draw { to { stroke-dashoffset: 0; } }

  @supports (animation-timeline: view()) {
    .reveal {
      animation: rise linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 35%;
    }
    @keyframes rise { from { opacity: 0; transform: translateY(1.5rem); } to { opacity: 1; transform: none; } }
  }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .draw-in { stroke-dasharray: none; stroke-dashoffset: 0; }
}

/* ---------- breakpoints ---------- */
@media (min-width: 600px) {
  .titleblock { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .titleblock--compact { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .schedule__row { grid-template-columns: 4.5rem minmax(0, 1fr) auto; align-items: start; }
  .schedule__icon { inline-size: 4.5rem; block-size: 4.5rem; }
  .schedule__link { grid-column: 3; grid-row: 1; align-self: center; }
  .drawings { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form__row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .timeline__item { grid-template-columns: minmax(0, 14rem) minmax(0, 1fr); column-gap: var(--sp-4); }
  .timeline__track { grid-column: 2; }
  .timeline__name { grid-row: span 2; }
}

@media (min-width: 900px) {
  .section { padding-block: var(--sp-7); }
  .hero__grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
  .split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .estimator { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); }
  .drawings { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .seals { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .callout { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
  .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .titleblock__cell--wide { grid-column: auto; }
  .titleblock--facts { grid-template-columns: repeat(4, minmax(0, 1fr)) minmax(0, 1.4fr); }
}

@media (min-width: 1140px) {
  .nav-toggle { display: none; }
  .site-nav,
  .site-nav[data-open="true"] {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
    position: static;
    padding: 0;
    border: 0;
    background: none;
    max-block-size: none;
    overflow: visible;
  }
  .site-nav__list { display: flex; gap: var(--sp-3); }
  .site-nav__list a { border: 0; padding: var(--sp-1) 0; font-size: var(--fs-1); }
  .site-nav__tools { margin: 0; flex-wrap: nowrap; }
}

@media (max-width: 380px) {
  .wrap { width: min(100% - 2 * var(--sp-3), var(--wrap)); }
  .btn { padding-inline: 1rem; }
  .titleblock { grid-template-columns: minmax(0, 1fr); }
  .spec__row { grid-template-columns: minmax(0, 1fr); }
  .spec dt { border-inline-end: 0; padding-block-end: 0; }
  .seal { grid-template-columns: minmax(0, 1fr); }
}

/* === inner pages: page-head === */
.page-head { padding-block: var(--sp-5); border-block-end: var(--rule); }
.page-head__title { font-size: var(--fs-5); max-inline-size: 24ch; margin-block-end: var(--sp-2); }
.page-head__lead { font-size: var(--fs-3); line-height: 1.75; max-inline-size: 44rem; margin-block-end: var(--sp-4); }
@media (min-width: 900px) {
  .page-head { padding-block: var(--sp-6); }
  .page-head__title { font-size: var(--fs-6); }
}

/* === services: service-detail === */
.service-detail__icon { inline-size: 4.5rem; block-size: 4.5rem; margin-block-end: var(--sp-3); color: var(--ink); }
.service-detail__body p { max-inline-size: 40rem; }
.service-detail__body .actions { margin-block-start: var(--sp-4); }
.spec-title { font-size: var(--fs-2); margin-block-end: var(--sp-2); }

/* === contact: sheet === */
.sheet { background: var(--paper); border: 2px solid var(--ink); padding: var(--sp-4); }
.sheet .btn { justify-self: start; }

/* === estimate: estimator extras === */
.estimator__form .form__field { margin-block-end: var(--sp-4); }
.estimator__summary { margin: 0; color: var(--ink-soft); font-size: var(--fs-1); }
.estimator__approx { margin: 0; font-weight: 700; }
.estimator__error { margin: 0 0 var(--sp-3); font-weight: 700; color: #A3261B; min-block-size: 1.5em; }