/* Nashua HVAC — site styles */
:root {
  --navy: #12283f;
  --navy-dark: #0b1a2b;
  --blue: #1f5f96;
  --orange: #f57c1f;
  --orange-dark: #d9660c;
  --bg: #ffffff;
  --bg-alt: #f2f6fa;
  --text: #24313f;
  --text-light: #5b6b7b;
  --border: #dde5ec;
  --radius: 10px;
  --maxw: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

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

/* ---------- Header ---------- */
.topbar {
  background: var(--navy-dark);
  color: #cfe0ef;
  font-size: 14px;
  padding: 6px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.topbar a { color: #ffffff; text-decoration: none; font-weight: 600; }

header.site {
  background: var(--navy);
  color: #fff;
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
}
header.site .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.logo { font-size: 24px; font-weight: 800; color: #fff; text-decoration: none; letter-spacing: -.5px; }
.logo span { color: var(--orange); }

nav.main { display: flex; gap: 4px; flex-wrap: wrap; }
nav.main a {
  color: #e6eef6;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 6px;
}
nav.main a:hover, nav.main a.active { background: rgba(255,255,255,.12); color: #fff; }

.btn {
  display: inline-block;
  background: var(--orange);
  color: #fff !important;
  text-decoration: none;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: none;
  font-size: 17px;
  cursor: pointer;
  transition: background .15s;
}
.btn:hover { background: var(--orange-dark); }
.btn.ghost { background: transparent; border: 2px solid #fff; }
.btn.ghost:hover { background: rgba(255,255,255,.12); }
.btn.big { font-size: 19px; padding: 16px 32px; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--blue) 100%);
  color: #fff;
  padding: 72px 0 80px;
  text-align: center;
}
.hero h1 { font-size: 42px; line-height: 1.15; letter-spacing: -1px; margin-bottom: 18px; }
.hero p.sub { font-size: 20px; color: #d8e6f3; max-width: 720px; margin: 0 auto 30px; }
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .trust { margin-top: 28px; font-size: 15px; color: #b9cfe2; }

/* ---------- Sections ---------- */
section.block { padding: 64px 0; }
section.block.alt { background: var(--bg-alt); }
.block h2 { font-size: 32px; letter-spacing: -.5px; margin-bottom: 12px; color: var(--navy); }
.block .lead { font-size: 18px; color: var(--text-light); max-width: 760px; margin-bottom: 34px; }
.block h3 { font-size: 21px; color: var(--navy); margin: 28px 0 8px; }
.block p + p { margin-top: 14px; }
.block ul { margin: 14px 0 14px 22px; }
.block li { margin-bottom: 8px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: 0 1px 4px rgba(18,40,63,.06);
}
.card h3 { margin: 0 0 10px; font-size: 20px; color: var(--navy); }
.card p { font-size: 15.5px; color: var(--text-light); margin-bottom: 14px; }
.card a.more { font-weight: 700; text-decoration: none; }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--orange);
  color: #fff;
  text-align: center;
  padding: 44px 0;
}
.cta-band h2 { font-size: 28px; margin-bottom: 8px; letter-spacing: -.5px; }
.cta-band p { font-size: 18px; margin-bottom: 20px; }
.cta-band .btn { background: var(--navy); }
.cta-band .btn:hover { background: var(--navy-dark); }

/* ---------- Forms ---------- */
form.lead-form { max-width: 560px; }
form.lead-form label { display: block; font-weight: 700; font-size: 15px; margin: 16px 0 6px; color: var(--navy); }
form.lead-form input, form.lead-form select, form.lead-form textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  background: #fff;
}
form.lead-form textarea { min-height: 110px; resize: vertical; }
form.lead-form button { margin-top: 22px; }
.form-note { font-size: 13.5px; color: var(--text-light); margin-top: 14px; }

/* ---------- FAQ ---------- */
.faq details {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 12px;
  background: #fff;
}
.faq summary { font-weight: 700; cursor: pointer; color: var(--navy); font-size: 17px; }
.faq details p { margin-top: 10px; color: var(--text-light); font-size: 16px; }

/* ---------- Footer ---------- */
footer.site {
  background: var(--navy-dark);
  color: #9db3c8;
  padding: 48px 0 80px;
  font-size: 15px;
}
footer.site .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 32px; margin-bottom: 32px; }
footer.site h4 { color: #fff; font-size: 16px; margin-bottom: 12px; }
footer.site a { color: #c8d9e9; text-decoration: none; }
footer.site a:hover { text-decoration: underline; }
footer.site ul { list-style: none; }
footer.site li { margin-bottom: 8px; }
.disclosure { border-top: 1px solid rgba(255,255,255,.12); padding-top: 22px; font-size: 13.5px; line-height: 1.6; }

/* ---------- Mobile sticky call bar ---------- */
.callbar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--orange);
  text-align: center;
  padding: 14px;
  z-index: 100;
  box-shadow: 0 -2px 10px rgba(0,0,0,.25);
}
.callbar a { color: #fff; font-weight: 800; font-size: 18px; text-decoration: none; }

/* ---------- Page hero (interior pages) ---------- */
.page-hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--blue) 100%);
  color: #fff;
  padding: 52px 0;
}
.page-hero h1 { font-size: 36px; letter-spacing: -.8px; margin-bottom: 12px; }
.page-hero p { font-size: 19px; color: #d8e6f3; max-width: 760px; margin-bottom: 24px; }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .hero { padding: 48px 0 56px; }
  .hero h1 { font-size: 31px; }
  .hero p.sub { font-size: 17px; }
  .page-hero { padding: 40px 0; }
  .page-hero h1 { font-size: 28px; }
  .block { padding: 48px 0; }
  .block h2 { font-size: 26px; }
  .callbar { display: block; }
  body { padding-bottom: 58px; }

  /* Compact header: hide topbar, logo + call button on one row, scrollable pill nav below */
  .topbar { display: none; }
  header.site { padding: 10px 0; }
  header.site .container { flex-wrap: wrap; gap: 10px; }
  .logo { font-size: 21px; }
  header.site > .container > .btn { padding: 10px 16px; font-size: 15px; margin-left: auto; }
  nav.main {
    display: flex;
    order: 3;
    flex-basis: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  nav.main::-webkit-scrollbar { display: none; }
  nav.main a {
    white-space: nowrap;
    font-size: 14px;
    padding: 7px 12px;
    background: rgba(255,255,255,.08);
    border-radius: 999px;
  }
}