/* ============================================================
   507 Air Heating & Cooling, LLC — brand stylesheet
   Palette from company logo/billboard: black ground, heating red,
   cooling blue. Display face echoes the collegiate logo lettering.
   ============================================================ */

:root {
  --ink:        #0B0D11;   /* billboard black, slight blue bias */
  --ink-2:      #151A22;   /* raised panel on dark */
  --paper:      #F6F6F3;   /* light section ground */
  --surface:    #FFFFFF;
  --line:       #E3E3DD;
  --line-dark:  #262C36;

  --red:        #D6222A;   /* heating */
  --red-deep:   #A9151C;
  --blue:       #1D63C8;   /* cooling */
  --blue-deep:  #124A99;

  --text:       #171B21;
  --steel:      #5A6270;   /* secondary text, cool bias */
  --muted:      #9AA1AC;
  --on-dark:    #F2F3F5;
  --on-dark-soft: #A8B0BC;

  --display: 'Graduate', 'Arial Black', sans-serif;
  --body: 'Barlow', 'Segoe UI', system-ui, sans-serif;

  --wrap: 1080px;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--blue-deep); }

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 22px;
}

/* ---------- dual-arrow motif (from the logo) ---------- */

.hero-arrows {
  display: block;
  width: min(330px, 80%);
  height: auto;
  margin: 22px 0;
}
.hero-arrows.center { margin-left: auto; margin-right: auto; }

/* ---------- header ---------- */

.site-header {
  background: var(--ink);
  border-bottom: 1px solid var(--line-dark);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .bar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--on-dark);
  min-width: 0;
}
.brand img {
  height: 52px;
  width: auto;
  border-radius: 6px;
}
.brand .name {
  font-family: var(--display);
  font-size: 0.86rem;
  line-height: 1.25;
  letter-spacing: 0.04em;
}
.brand .name small {
  display: block;
  font-family: var(--body);
  font-weight: 500;
  font-size: 0.72rem;
  color: var(--on-dark-soft);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  color: var(--on-dark-soft);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 12px;
  border-radius: 6px;
}
.site-nav a:hover { color: var(--on-dark); background: var(--ink-2); }
.site-nav a[aria-current="page"] {
  color: var(--on-dark);
  box-shadow: inset 0 -3px 0 var(--red);
  border-radius: 6px 6px 0 0;
}

.call-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: #fff !important;
  font-weight: 700;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 8px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.call-btn:hover { background: var(--red-deep); }
.site-nav .call-btn { margin-left: 10px; }

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  padding: 9px 11px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--on-dark);
  margin: 4px 0;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--ink);
    border-bottom: 1px solid var(--line-dark);
    padding: 8px 16px 16px;
    gap: 2px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px; }
  .site-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--red); border-radius: 6px; }
  .site-nav .call-btn { margin: 10px 0 0; justify-content: center; }
}

/* ---------- hero ---------- */

.hero {
  background: var(--ink);
  color: var(--on-dark);
  padding: 64px 0 56px;
}
.hero .kicker {
  font-family: var(--body);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--on-dark-soft);
  margin: 0 0 18px;
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(1.7rem, 5.4vw, 3.1rem);
  line-height: 1.16;
  margin: 0;
  letter-spacing: 0.015em;
  text-wrap: balance;
  max-width: 21ch;
}
.hero h1 .cool { color: #4E8EE8; }
.hero h1 .heat { color: #E8474E; }

/* homepage: business name is the standout, tagline is the subheading */
.hero .hero-name {
  font-family: var(--display);
  font-size: clamp(2.4rem, 9vw, 4.4rem);
  line-height: 1.0;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--on-dark);
  text-wrap: balance;
  max-width: 15ch;
}
.hero .hero-tagline {
  font-family: var(--display);
  font-size: clamp(1.05rem, 2.8vw, 1.5rem);
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--on-dark-soft);
  margin: 16px 0 0;
  max-width: 28ch;
}
.hero .hero-tagline .cool { color: #4E8EE8; }
.hero .hero-tagline .heat { color: #E8474E; }

.hero .sub {
  font-size: 1.12rem;
  color: var(--on-dark-soft);
  max-width: 54ch;
  margin: 20px 0 28px;
}
.hero .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  padding: 14px 22px;
  border-radius: 9px;
}
.btn.primary { background: var(--red); color: #fff; }
.btn.primary:hover { background: var(--red-deep); }
.btn.ghost {
  color: var(--on-dark);
  border: 1.5px solid var(--line-dark);
}
.btn.ghost:hover { border-color: var(--on-dark-soft); }
.btn.blue { background: var(--blue); color: #fff; }
.btn.blue:hover { background: var(--blue-deep); }

.trust-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
  padding: 0;
  list-style: none;
}
.trust-chips li {
  border: 1px solid var(--line-dark);
  background: var(--ink-2);
  color: var(--on-dark-soft);
  border-radius: 999px;
  padding: 7px 15px;
  font-size: 0.88rem;
  font-weight: 600;
}
.trust-chips li strong { color: var(--on-dark); font-weight: 700; }

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

section.block { padding: 62px 0; }
section.block.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
section.block.dark { background: var(--ink); color: var(--on-dark); }

.eyebrow {
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.74rem;
  color: var(--red);
  margin: 0 0 10px;
}
.eyebrow.cool { color: var(--blue); }
h2 {
  font-family: var(--display);
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  line-height: 1.25;
  margin: 0 0 14px;
  letter-spacing: 0.01em;
  text-wrap: balance;
}
.block.dark h2 { color: var(--on-dark); }
.lede {
  font-size: 1.08rem;
  color: var(--steel);
  max-width: 62ch;
  margin: 0 0 30px;
}
.block.dark .lede { color: var(--on-dark-soft); }

/* ---------- service cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.svc-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
}
.svc-card.heat { border-top-color: var(--red); }
.svc-card h3 {
  font-family: var(--body);
  font-weight: 700;
  font-size: 1.08rem;
  margin: 0 0 8px;
}
.svc-card p { margin: 0; color: var(--steel); font-size: 0.95rem; }
.svc-card ul {
  margin: 10px 0 0;
  padding: 0 0 0 18px;
  color: var(--steel);
  font-size: 0.95rem;
}
.svc-card ul li { margin: 4px 0; }

/* ---------- brand badges ---------- */

.brand-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.brand-badge {
  font-family: var(--display);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  border: 1.5px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: 12px 20px;
  color: var(--text);
}
.brand-note { color: var(--steel); margin-top: 18px; max-width: 58ch; }

/* ---------- split layout ---------- */

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 44px;
  align-items: center;
}
.split .photo img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
}

/* ---------- deal card ---------- */

.deal-card {
  background: var(--surface);
  border: 1.5px solid var(--red);
  border-radius: var(--radius);
  padding: 26px 26px 24px;
  max-width: 560px;
}
.deal-card .season {
  display: inline-block;
  background: var(--red);
  color: #fff;
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 12px;
}
.deal-card.cool { border-color: var(--blue); }
.deal-card.cool .season { background: var(--blue); }
.deal-card h3 {
  font-family: var(--display);
  font-size: 1.25rem;
  margin: 0 0 8px;
}
.deal-card p { color: var(--steel); margin: 0 0 16px; }

/* ---------- info tables / contact ---------- */

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}
.info-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.info-card h3 {
  font-family: var(--body);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0 0 10px;
}
.info-card .big {
  font-size: 1.3rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.info-card a { text-decoration: none; color: var(--blue-deep); }
.info-card a:hover { text-decoration: underline; }
.info-card p { margin: 6px 0 0; color: var(--steel); font-size: 0.95rem; }

table.hours {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.98rem;
}
table.hours td {
  padding: 9px 4px;
  border-bottom: 1px solid var(--line);
}
table.hours tr:last-child td { border-bottom: none; }
table.hours td:last-child {
  text-align: right;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.emergency-flag {
  color: var(--red);
  font-weight: 700;
}

.es-note {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  padding: 12px 18px;
  font-weight: 600;
  margin-top: 26px;
}

/* ---------- area list ---------- */

.area-group { margin-bottom: 24px; }
.area-group:last-of-type { margin-bottom: 0; }
.area-group h3 {
  font-family: var(--body);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0 0 12px;
}
.block.dark .area-group h3 { color: var(--on-dark-soft); }

.area-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.area-list li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--steel);
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--ink);
  color: var(--on-dark);
  padding: 54px 0;
}
.cta-band .inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 26px;
  justify-content: space-between;
}
.cta-band h2 { margin: 0; max-width: 24ch; }
.cta-band .cta-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- footer ---------- */

.site-footer {
  background: var(--ink);
  color: var(--on-dark-soft);
  border-top: 1px solid var(--line-dark);
  padding: 46px 0 30px;
  font-size: 0.94rem;
}
.site-footer .cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 800px) {
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
  .site-footer .cols { grid-template-columns: 1fr; }
}
.site-footer h4 {
  color: var(--on-dark);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 12px;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 7px 0; }
.site-footer a { color: var(--on-dark-soft); text-decoration: none; }
.site-footer a:hover { color: var(--on-dark); }
.site-footer .brandline {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.site-footer .brandline img { height: 46px; border-radius: 6px; }
.site-footer .legal {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--muted);
}
.site-footer .legal a { color: var(--muted); text-decoration: underline; }

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