/* ==========================================================================
   Solr Design — shared stylesheet
   Drafting-room visual system: cell-dark grounds, cool drafting paper,
   silver rule lines, amber reserved for yield/sun.
   ========================================================================== */

:root {
  /* Ground / surface */
  --ink:        #0E1322;   /* monocrystalline cell dark — hero + footer ground */
  --ink-2:      #1B2338;   /* elevated dark surface */
  --ink-3:      #2B3550;   /* dark hairline */
  --paper:      #EEF1F6;   /* cool drafting paper — main light ground */
  --paper-2:    #F7F9FC;   /* raised paper */
  --white:      #FFFFFF;

  /* Line work */
  --line:       #8494B0;   /* busbar silver — drawing lines on dark */
  --rule:       #C9D2E0;   /* hairline rule on paper */
  --rule-soft:  #DEE4EE;

  /* Accent — amber is the sun/yield. Decorative only on light. */
  --amber:      #FFB020;
  --amber-deep: #E08A00;
  --amber-ink:  #8A5A00;   /* AA-safe amber for text on paper */

  /* Text */
  --text:       #141A2E;
  --text-soft:  #46506B;
  --text-dim:   #66708C;
  --on-ink:     #E6EBF4;
  --on-ink-soft:#A9B5CC;

  /* Spacing scale — intentional steps, not arbitrary */
  --s1: 0.5rem;
  --s2: 0.875rem;
  --s3: 1.25rem;
  --s4: 2rem;
  --s5: 3rem;
  --s6: 4.5rem;
  --s7: 7rem;

  --measure: 62ch;
  --gutter: 1.5rem;
  --maxw: 1200px;

  --radius: 3px;
  --radius-lg: 6px;

  /* Layered, colour-tinted shadows — never flat grey */
  --shadow-1: 0 1px 2px rgba(20, 26, 46, 0.06),
              0 2px 6px rgba(20, 26, 46, 0.05);
  --shadow-2: 0 2px 4px rgba(20, 26, 46, 0.06),
              0 8px 20px rgba(20, 26, 46, 0.08),
              0 20px 44px rgba(20, 26, 46, 0.06);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--paper);
  overflow-x: hidden;
}

/* --- Type -------------------------------------------------------------- */

h1, h2, h3, h4, .display, .label, .btn, nav, .spec dt {
  font-family: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
}

h1, h2, h3, h4 {
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.375rem, 5.2vw, 3.75rem);
  font-stretch: 116%;
  letter-spacing: -0.032em;
}

h2 {
  font-size: clamp(1.75rem, 3.6vw, 2.75rem);
  font-stretch: 112%;
  letter-spacing: -0.028em;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

p { max-width: var(--measure); }

a { color: inherit; }

strong { font-weight: 600; }

/* Small technical label — sentence case, never all-caps */
.label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text-dim);
  font-feature-settings: 'tnum' 1;
}

.lede {
  font-size: clamp(1.125rem, 2vw, 1.3125rem);
  line-height: 1.6;
  color: var(--text-soft);
}

.num { font-feature-settings: 'tnum' 1; font-variant-numeric: tabular-nums; }

/* --- Layout ------------------------------------------------------------ */

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--s6); }
.section-tight { padding-block: var(--s5); }

@media (min-width: 900px) {
  :root { --gutter: 2.5rem; }
  .section { padding-block: var(--s7); }
}

/* Drafting registration marks — structural, marks the measured grid */
.ruled {
  position: relative;
  border-top: 1px solid var(--rule);
}
.ruled::before,
.ruled::after {
  content: '';
  position: absolute;
  top: -1px;
  width: 1px;
  height: 11px;
  background: var(--line);
  opacity: 0.75;
}
.ruled::before { left: var(--gutter); }
.ruled::after  { right: var(--gutter); }

/* --- Buttons ----------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s1);
  padding: 0.8125rem 1.375rem;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.22s var(--ease),
              background-color 0.22s var(--ease),
              border-color 0.22s var(--ease),
              box-shadow 0.22s var(--ease);
}

.btn-primary {
  background: var(--ink);
  color: var(--white);
  box-shadow: var(--shadow-1);
}
.btn-primary:hover { background: var(--ink-2); transform: translateY(-1px); box-shadow: var(--shadow-2); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--rule);
}
.btn-ghost:hover { border-color: var(--line); background: var(--paper-2); transform: translateY(-1px); }
.btn-ghost:active { transform: translateY(0); }

.on-ink .btn-primary, .band .btn-primary { background: var(--amber); color: var(--ink); }
.on-ink .btn-primary:hover, .band .btn-primary:hover { background: var(--amber-deep); }
.on-ink .btn-ghost, .band .btn-ghost { color: var(--on-ink); border-color: var(--ink-3); }
.on-ink .btn-ghost:hover, .band .btn-ghost:hover { border-color: var(--line); background: rgba(255,255,255,0.04); }

:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 2px solid var(--amber-deep);
  outline-offset: 3px;
  border-radius: 2px;
}
.on-ink :where(a, button):focus-visible,
.band :where(a, button):focus-visible { outline-color: var(--amber); }

/* --- Header ------------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(238, 241, 246, 0.86);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--rule);
}
.site-header.on-ink {
  background: rgba(14, 19, 34, 0.82);
  border-bottom-color: var(--ink-3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-stretch: 112%;
  font-size: 1.0625rem;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--text);
}
.on-ink .brand { color: var(--on-ink); }
.brand svg { display: block; flex-shrink: 0; }

.nav {
  display: none;
  align-items: center;
  gap: var(--s3);
}
.nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-soft);
  text-decoration: none;
  padding: 0.375rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav a:hover { color: var(--text); border-bottom-color: var(--line); }
.nav a[aria-current='page'] { color: var(--text); border-bottom-color: var(--amber); }
.on-ink .nav a { color: var(--on-ink-soft); }
.on-ink .nav a:hover,
.on-ink .nav a[aria-current='page'] { color: var(--white); }

.header-cta { display: none; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.nav-toggle:hover { border-color: var(--line); background: rgba(132,148,176,0.10); }
.on-ink .nav-toggle { border-color: var(--ink-3); color: var(--on-ink); }

/* Placed after .nav-toggle so it wins on source order — an earlier media
   query was being overridden by the base rule and left the burger visible. */
@media (min-width: 940px) {
  .nav { display: flex; }
  .header-cta { display: inline-flex; }
  .header-inner .nav-toggle { display: none; }
}

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--paper);
  padding: var(--s4) var(--gutter);
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  transform: translateX(100%);
  transition: transform 0.32s var(--ease);
}
.drawer[data-open='true'] { transform: translateX(0); }
.drawer a {
  font-family: 'Archivo', sans-serif;
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-decoration: none;
  padding-block: var(--s2);
  border-bottom: 1px solid var(--rule-soft);
}
.drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--s3); }
/* The header CTA is hidden below 940px, so the drawer carries it instead. */
.drawer .btn {
  font-size: 0.9375rem;
  border-bottom: none;
  justify-content: center;
  margin-top: var(--s3);
  padding: 0.9375rem 1.375rem;
}
@media (prefers-reduced-motion: reduce) {
  .drawer { transition: none; }
}

/* --- Hero -------------------------------------------------------------- */

.hero {
  background: var(--ink);
  color: var(--on-ink);
  position: relative;
  overflow: hidden;
}

/* Drafting grid underlay — the measured plane the drawing sits on */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(132, 148, 176, 0.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(132, 148, 176, 0.10) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 120% 90% at 70% 20%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--s5);
  padding-block: var(--s6) var(--s6);
  align-items: center;
}

@media (min-width: 1000px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: var(--s4);
    padding-block: var(--s7);
  }
}

.hero h1 { color: var(--white); }

.hero .lede {
  color: var(--on-ink-soft);
  margin-top: var(--s3);
  max-width: 44ch;
}

/* Interior page header — same ground and grid as the hero, shorter */
.page-head {
  background: var(--ink);
  color: var(--on-ink);
  position: relative;
  overflow: hidden;
}
.page-head::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(132, 148, 176, 0.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(132, 148, 176, 0.10) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 110% 100% at 78% 10%, #000 15%, transparent 76%);
  pointer-events: none;
}
.page-head-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--s5) var(--s6);
}
.page-head h1 {
  color: var(--white);
  max-width: 18ch;
  font-size: clamp(2.125rem, 4.4vw, 3.25rem);
}
.page-head .label { color: var(--line); display: block; margin-bottom: var(--s2); }
.page-head .lede { color: var(--on-ink-soft); margin-top: var(--s3); max-width: 52ch; }

/* The drawing is the hero's bold move — let it fill its column */
@media (min-width: 1000px) {
  .hero-inner > svg.plan { width: 112%; max-width: none; margin-left: -6%; }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  margin-top: var(--s4);
}

/* Spec block — reads as a drawing's title block, not a stat row */
.spec {
  margin-top: var(--s4);
  padding-top: var(--s3);
  border-top: 1px solid var(--ink-3);
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: var(--s3) var(--s4);
  justify-content: start;
}
.spec dt {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--on-ink-soft);
  margin-bottom: 0.125rem;
}
.spec dd {
  font-family: 'Archivo', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  font-stretch: 110%;
  letter-spacing: -0.02em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

/* --- Roof plan drawing ------------------------------------------------- */

.plan {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}
.plan .roof-face { fill: rgba(132, 148, 176, 0.07); stroke: var(--line); stroke-width: 1.25; }
.plan .roof-ridge { stroke: var(--line); stroke-width: 1.25; }
.plan .dim { stroke: rgba(132,148,176,0.55); stroke-width: 1; }
.plan .dim-text,
.plan .annot {
  font-family: 'Archivo', sans-serif;
  font-size: 13px;
  font-weight: 500;
  fill: var(--on-ink-soft);
  font-variant-numeric: tabular-nums;
}
.plan .panel {
  fill: var(--amber);
  stroke: #7A5200;
  stroke-width: 0.75;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
}
.plan .panel-grid { stroke: rgba(122, 82, 0, 0.55); stroke-width: 0.5; }
.plan .shade { fill: rgba(132, 148, 176, 0.20); stroke: rgba(132,148,176,0.45); stroke-width: 0.75; stroke-dasharray: 3 3; }

/* One orchestrated load moment: panels settle onto the plane */
@keyframes place {
  from { opacity: 0; transform: translateY(-9px) scale(0.9); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.plan.is-live .panel {
  animation: place 0.5s var(--ease) forwards;
}
@media (prefers-reduced-motion: reduce) {
  .plan.is-live .panel { animation: none; opacity: 1; }
}
.plan.no-anim .panel { opacity: 1; }

/* --- Prose / sections -------------------------------------------------- */

.section-head { max-width: 46ch; margin-bottom: var(--s5); }
.section-head .label { display: block; margin-bottom: var(--s2); }
.section-head p { margin-top: var(--s3); }

.grid-2 { display: grid; gap: var(--s4); }
.grid-3 { display: grid; gap: var(--s4); }
@media (min-width: 760px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

/* Scope of work — a specification list, deliberately not a card kit */
.scope { border-top: 1px solid var(--rule); }
.scope-item {
  display: grid;
  gap: var(--s1) var(--s4);
  padding-block: var(--s3);
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
}
@media (min-width: 800px) {
  .scope-item { grid-template-columns: 13rem minmax(0, 1fr); }
}
.scope-item h3 { color: var(--text); }
.scope-item p { color: var(--text-soft); margin: 0; }

/* Process — genuinely a sequence, so numbering carries real information */
.steps { counter-reset: step; display: grid; gap: 0; }
.step {
  counter-increment: step;
  display: grid;
  gap: var(--s2) var(--s4);
  padding-block: var(--s4);
  border-bottom: 1px solid var(--rule-soft);
  position: relative;
}
.step:first-child { border-top: 1px solid var(--rule); }
@media (min-width: 800px) {
  .step { grid-template-columns: 4rem minmax(0, 22rem) minmax(0, 1fr); align-items: start; }
}
.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: 'Archivo', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--amber-ink);
  padding-top: 0.25rem;
}
.step p { color: var(--text-soft); margin: 0; }

/* Rebate figures — data, so set as a table */
.figures { width: 100%; border-collapse: collapse; margin-top: var(--s3); }
.figures caption { text-align: left; color: var(--text-dim); font-size: 0.8125rem; padding-bottom: var(--s2); font-family: 'Archivo', sans-serif; }
.figures th, .figures td { text-align: left; padding: var(--s2) var(--s3) var(--s2) 0; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
.figures th { font-family: 'Archivo', sans-serif; font-size: 0.875rem; font-weight: 600; color: var(--text); }
.figures td { color: var(--text-soft); font-size: 0.9375rem; }
.figures td.amt { font-family: 'Archivo', sans-serif; font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* Panel — raised surface, used sparingly */
.panel-box {
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius-lg);
  padding: var(--s4);
  box-shadow: var(--shadow-1);
}

.band {
  background: var(--ink);
  color: var(--on-ink);
}
.band h2, .band h3 { color: var(--white); }
.band p { color: var(--on-ink-soft); }
.band .label { color: var(--line); }

/* Placeholder marker — anything awaiting real business detail */
.tbc {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: var(--s3);
  background: rgba(255, 176, 32, 0.07);
  color: var(--text-soft);
  font-size: 0.9375rem;
}
.tbc b { font-family: 'Archivo', sans-serif; color: var(--amber-ink); font-weight: 600; }

/* --- Form -------------------------------------------------------------- */

.form-grid { display: grid; gap: var(--s3); }
@media (min-width: 700px) { .form-grid { grid-template-columns: repeat(2, 1fr); } }
.field { display: grid; gap: 0.375rem; }
.field.full { grid-column: 1 / -1; }
.field label { font-family: 'Archivo', sans-serif; font-size: 0.875rem; font-weight: 600; color: var(--text); }
.field input, .field select, .field textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.6875rem 0.8125rem;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--line); }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--amber-deep);
  box-shadow: 0 0 0 3px rgba(255, 176, 32, 0.18);
  outline: none;
}
.field textarea { min-height: 7rem; resize: vertical; }
.field .btn { justify-self: start; }
.form-note { font-size: 0.875rem; color: var(--text-dim); margin-top: var(--s2); }
.form-status {
  border-left: 3px solid var(--amber);
  padding: var(--s2) var(--s3);
  background: rgba(255, 176, 32, 0.10);
  color: var(--text);
}

/* --- Footer ------------------------------------------------------------ */

.site-footer {
  background: var(--ink);
  color: var(--on-ink-soft);
  padding-block: var(--s5) var(--s4);
  font-size: 0.9375rem;
}
.footer-grid { display: grid; gap: var(--s4); }
@media (min-width: 800px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: var(--s5); } }
.site-footer h4 { color: var(--white); font-size: 0.9375rem; margin-bottom: var(--s2); }
.site-footer a { color: var(--on-ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 3px; }
.footer-links { display: grid; gap: 0.5rem; }
.footer-legal {
  margin-top: var(--s4);
  padding-top: var(--s3);
  border-top: 1px solid var(--ink-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2) var(--s4);
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--line);
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: var(--gutter);
  top: var(--s1);
  z-index: 100;
  background: var(--white);
  color: var(--text);
  padding: var(--s1) var(--s2);
  border-radius: var(--radius);
}