/* =========================================================
   Graff's Plumbing & Heating — design system
   Palette: cast iron, copper, aged blueprint paper.
   ========================================================= */

:root {
  /* -- color: cast iron & ink -- */
  --ink: #15181b;
  --iron: #21262b;
  --iron-light: #333b42;

  /* -- color: blueprint accent (used sparingly, as a dark-section trace) -- */
  --blueprint-line: rgba(160, 195, 224, 0.16);

  /* -- color: copper & verdigris -- */
  --copper: #c1793f;
  --copper-bright: #d99354;
  --copper-dark: #8a521f;
  --verdigris: #5c9285;

  /* -- color: paper -- */
  --paper: #f2e9d8;
  --paper-white: #faf6ec;
  --paper-line: rgba(21, 24, 27, 0.08);

  --ok: #5c9285;
  --error: #b3462c;

  /* -- type -- */
  --font-head: "Zilla Slab", Georgia, "Times New Roman", serif;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  /* -- layout -- */
  --max: 72rem;
  --gutter: 1.25rem;
  --radius: 8px;
}

@media (min-width: 640px) {
  :root { --gutter: 2rem; }
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }
button { font: inherit; }
h1, h2, h3, h4 { font-family: var(--font-head); margin: 0 0 0.5em; line-height: 1.15; font-weight: 600; }
p { margin: 0 0 1em; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; margin: -1px;
}
.icon { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 1.5; }

/* ---------- layout helpers ---------- */
.wrap {
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
section { padding-block: clamp(3rem, 7vw, 6rem); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper-dark);
  margin-bottom: 0.75em;
}
.eyebrow::before {
  content: "";
  width: 1.4em;
  height: 1px;
  background: var(--copper-dark);
}
.section-head { max-width: 40rem; margin-bottom: clamp(2rem, 5vw, 3rem); }
.section-head p { color: var(--iron-light); font-size: 1.05rem; }
.section-head.on-dark p { color: rgba(242, 233, 216, 0.78); }
.section-head.on-dark h2 { color: var(--paper-white); }
.section-head.on-dark .eyebrow { color: var(--copper-bright); }
.section-head.on-dark .eyebrow::before { background: var(--copper-bright); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 0.85em 1.5em;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background-color 0.12s ease, border-color 0.12s ease;
}
.btn:active { transform: translateY(1px); }
.btn-copper {
  background: var(--copper);
  color: var(--paper-white);
  border-color: var(--copper-dark);
}
.btn-copper:hover { background: var(--copper-bright); }
.btn-outline {
  background: transparent;
  color: var(--paper-white);
  border-color: rgba(250, 246, 236, 0.4);
}
.btn-outline:hover { border-color: var(--paper-white); background: rgba(250, 246, 236, 0.08); }
.btn-outline-dark {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-outline-dark:hover { background: var(--ink); color: var(--paper-white); }
.btn-block { width: 100%; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.75rem;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--paper-white);
}
.brand-mark { width: 2.35rem; height: 2.35rem; flex: none; }
.brand-text { font-family: var(--font-head); line-height: 1.1; }
.brand-text strong { display: block; font-size: 1.05rem; font-weight: 600; }
.brand-text span { display: block; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.12em; color: var(--copper-bright); text-transform: uppercase; margin-top: 0.15em; }
.site-nav { display: none; }
.site-nav ul { display: flex; gap: 1.6rem; }
.site-nav a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  color: rgba(242, 233, 216, 0.75);
}
.site-nav a:hover { color: var(--copper-bright); }
@media (min-width: 860px) { .site-nav { display: block; } }
.header-cta { display: flex; align-items: center; gap: 0.75rem; }
.header-phone {
  display: none;
  align-items: center;
  gap: 0.5em;
  color: var(--paper-white);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.92rem;
}
.header-phone .icon { color: var(--copper-bright); }
@media (min-width: 560px) { .header-phone { display: inline-flex; } }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  padding-block: clamp(4rem, 11vw, 8rem);
}
.hero .wrap { position: relative; }
.hero-grid {
  display: grid;
  gap: 2.5rem;
}
.hero-copy { max-width: 40rem; }
.hero h1 {
  font-size: clamp(2.3rem, 5.6vw, 3.6rem);
  color: var(--ink);
  max-width: 16ch;
}
.hero h1 em {
  font-style: normal;
  color: var(--copper-dark);
}
.hero-lede {
  font-size: 1.1rem;
  color: var(--iron-light);
  max-width: 42ch;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 1.75rem; }
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 1.75rem;
  margin-top: 2.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--paper-line);
}
.hero-badge { font-family: var(--font-mono); font-size: 0.85rem; color: var(--iron-light); }
.hero-badge b { display: block; font-family: var(--font-head); font-size: 1.6rem; color: var(--ink); font-weight: 600; }

/* ---------- about ---------- */
.about { background: var(--paper); }
.about-grid { display: grid; gap: 3rem; }
@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: start; }
}
.about-copy p { color: var(--iron-light); }
.about-copy .lede { font-size: 1.15rem; color: var(--ink); }

.timeline { margin-top: 2rem; border-left: 2px solid var(--paper-line); padding-left: 1.5rem; }
.timeline-item { position: relative; padding-bottom: 1.75rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.56rem;
  top: 0.3rem;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--copper);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 2px var(--copper-dark);
}
.timeline-year { font-family: var(--font-mono); font-size: 0.8rem; color: var(--copper-dark); letter-spacing: 0.06em; }
.timeline-item h3 { font-size: 1.05rem; margin: 0.2em 0 0.3em; }
.timeline-item p { color: var(--iron-light); margin: 0; font-size: 0.96rem; }

.callout {
  margin-top: 2.5rem;
  background: var(--ink);
  color: var(--paper-white);
  border-radius: var(--radius);
  padding: 1.75rem;
  position: relative;
  border-left: 4px solid var(--copper);
}
.callout .quote-mark { width: 1.6rem; height: 1.6rem; color: var(--copper-bright); margin-bottom: 0.75rem; }
.callout p { font-size: 1.02rem; color: rgba(242, 233, 216, 0.9); margin-bottom: 0.75rem; }
.callout cite { font-family: var(--font-mono); font-size: 0.78rem; color: var(--copper-bright); font-style: normal; letter-spacing: 0.02em; }

.about-portrait {
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  padding: 1.75rem;
  background: var(--paper-white);
}
.about-portrait .frame {
  aspect-ratio: 4 / 3;
  border-radius: 6px;
  background: linear-gradient(155deg, #ecdfc2 0%, var(--paper) 100%);
  box-shadow: inset 0 0 0 1px var(--paper-line);
}
.about-portrait figcaption { margin-top: 1rem; }
.about-portrait figcaption strong { display: block; font-family: var(--font-head); font-size: 1.05rem; }
.about-portrait figcaption span { display: block; font-family: var(--font-mono); font-size: 0.78rem; color: var(--copper-dark); margin-top: 0.2em; }
.generation-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.25rem; }
.generation-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35em 0.65em;
  border: 1px solid var(--paper-line);
  border-radius: 4px;
  color: var(--iron-light);
}

/* ---------- services ---------- */
.services { background: var(--paper-white); border-top: 1px solid var(--paper-line); border-bottom: 1px solid var(--paper-line); }
.service-ledger { border-top: 1px solid var(--paper-line); }
.ledger-row {
  display: flex;
  gap: 1.25rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--paper-line);
  align-items: flex-start;
  transition: background-color 0.15s ease;
}
.ledger-row:hover { background: rgba(193, 121, 63, 0.06); }
.ledger-index {
  flex: none;
  width: 2.5rem;
  padding-top: 0.2em;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--copper-dark);
}
.ledger-body { flex: 1; min-width: 0; }
.ledger-body h3 {
  display: flex;
  align-items: center;
  gap: 0.55em;
  font-size: 1.1rem;
  margin-bottom: 0.35em;
}
.ledger-body h3 .icon { width: 1.05em; height: 1.05em; color: var(--copper); flex: none; }
.ledger-body p { color: var(--iron-light); font-size: 0.96rem; margin: 0; max-width: 56ch; }
@media (min-width: 640px) {
  .ledger-index { width: 3rem; font-size: 1rem; }
  .ledger-body h3 { font-size: 1.18rem; }
}

/* ---------- stats ---------- */
.stats { background: var(--ink); color: var(--paper-white); position: relative; overflow: hidden; }
.stats::before {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--blueprint-line) 1px, transparent 1px), linear-gradient(90deg, var(--blueprint-line) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.15;
}
.stats .wrap { position: relative; }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.75rem 1rem; }
@media (min-width: 720px) { .stats-grid { grid-template-columns: repeat(4, 1fr); gap: 2rem; } }
.stat {
  border-left: 2px solid var(--copper);
  padding-left: 1rem;
}
.stat .num {
  font-family: var(--font-head);
  font-size: clamp(2.1rem, 5vw, 2.9rem);
  font-weight: 600;
  color: var(--paper-white);
  display: flex;
  align-items: baseline;
  gap: 0.15em;
}
.stat .num .unit { font-family: var(--font-mono); font-size: 0.9rem; color: var(--copper-bright); }
.stat .label { font-family: var(--font-mono); font-size: 0.78rem; color: rgba(242, 233, 216, 0.68); letter-spacing: 0.03em; margin-top: 0.35em; }
.stars { display: inline-flex; gap: 0.15em; color: var(--copper-bright); }
.stars .icon { width: 1em; height: 1em; }

/* ---------- FAQ ---------- */
.faq { background: var(--paper); }
.faq-list { max-width: 46rem; border-top: 1px solid var(--paper-line); }
.faq-item { border-bottom: 1px solid var(--paper-line); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 0.1rem;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 600;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .chevron { flex: none; width: 1.15rem; height: 1.15rem; color: var(--copper); transition: transform 0.18s ease; }
.faq-item[open] summary .chevron { transform: rotate(180deg); }
.faq-item .faq-answer { padding: 0 0.1rem 1.25rem; color: var(--iron-light); max-width: 42rem; }

/* ---------- contact ---------- */
.contact { background: var(--paper); color: var(--ink); }
.contact-grid { display: grid; gap: 2.5rem; }
@media (min-width: 960px) { .contact-grid { grid-template-columns: 0.85fr 1.15fr; gap: 3.5rem; } }

.contact-phone-card {
  border: 1px solid var(--iron-light);
  border-radius: var(--radius);
  padding: 1.75rem;
  background: var(--ink);
  color: var(--paper-white);
}
.contact-phone-card .call-label { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--copper-bright); }
.contact-phone-card .call-number {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 5vw, 2.3rem);
  color: var(--paper-white);
  text-decoration: none;
  margin: 0.3em 0 0.75em;
}
.contact-phone-card .call-number:hover { color: var(--copper-bright); }
.area-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.area-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  white-space: nowrap;
  padding: 0.4em 0.7em;
  border: 1px solid rgba(250, 246, 236, 0.2);
  border-radius: 4px;
  color: rgba(242, 233, 216, 0.85);
}
.area-chip .icon { width: 0.85em; height: 0.85em; flex: none; }
.contact-note {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(250, 246, 236, 0.2);
  font-size: 0.9rem;
  color: rgba(242, 233, 216, 0.68);
}

.contact-form { background: var(--paper-white); color: var(--ink); border: 1px solid var(--paper-line); border-radius: var(--radius); padding: 1.75rem; }
@media (min-width: 560px) { .contact-form { padding: 2.25rem; } }
.form-row { margin-bottom: 1.15rem; }
.form-row-split { display: grid; gap: 1.15rem; }
@media (min-width: 560px) { .form-row-split { grid-template-columns: 1fr 1fr; } }
label { display: block; font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--iron-light); margin-bottom: 0.4em; }
input, select, textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75em 0.85em;
  border: 1px solid var(--paper-line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--copper);
  outline-offset: 1px;
  border-color: var(--copper);
}
textarea { resize: vertical; min-height: 6.5rem; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-status { margin-top: 1rem; font-size: 0.92rem; font-family: var(--font-mono); }
.form-status[data-state="ok"] { color: var(--ok); }
.form-status[data-state="error"] { color: var(--error); }
.form-fineprint { margin-top: 0.9rem; font-size: 0.8rem; color: var(--iron-light); }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: rgba(242, 233, 216, 0.7); }
.footer-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-block: 2.5rem;
}
@media (min-width: 720px) {
  .footer-grid { flex-direction: row; align-items: center; justify-content: space-between; }
}
.footer-brand { display: flex; align-items: center; gap: 0.6rem; color: var(--paper-white); }
.footer-brand .brand-mark { width: 1.9rem; height: 1.9rem; }
.footer-brand strong { font-family: var(--font-head); font-size: 0.98rem; }
.footer-meta { font-family: var(--font-mono); font-size: 0.78rem; line-height: 1.9; }
.footer-meta a { text-decoration: none; }
.footer-meta a:hover { color: var(--copper-bright); }

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