/* Tandem Air Specialists — static site styles */
:root {
  --navy: #1F3864;
  --navy-dark: #152A4D;
  --blue: #2E5A9E;
  --light-blue: #EDF2F9;
  --grey: #595959;
  --light-grey: #F2F2F2;
  --border: #D9D9D9;
  --white: #FFFFFF;
  --accent: #E8A33D;
  --accent-dark: #C9831F;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: #0B1626;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #E6EDF7;
  line-height: 1.6;
  font-size: 17px;
}
a { color: #8FB4E8; }
img { max-width: 100%; height: auto; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* Header */
.topbar { background: var(--navy-dark); color: #fff; font-size: 15px; }
.topbar .container { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; padding-top: 8px; padding-bottom: 8px; }
.topbar a { color: #fff; text-decoration: none; font-weight: 600; }
.topbar a:hover { text-decoration: underline; }
.site-header { background: #0B1626; border-bottom: 3px solid var(--blue); }
.site-header .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; }
.logo img { height: 72px; width: auto; display: block; background: #fff; padding: 6px 10px; border-radius: 6px; }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; }
nav a { display: block; padding: 10px 14px; color: #fff; text-decoration: none; font-weight: 700; border-radius: 4px; }
nav a:hover, nav a.active { background: var(--blue); color: #fff; }

/* Hero — photo background with a dark navy overlay so white text stays readable */
.hero {
  background:
    linear-gradient(rgba(21, 42, 77, 0.82), rgba(21, 42, 77, 0.68)),
    url("images/hero.jpg") center 38% / cover no-repeat;
  background-color: var(--navy);
  color: #fff;
  padding: 72px 0;
}
.hero h1 { text-shadow: 0 2px 10px rgba(0, 0, 0, 0.45); }
.hero h1 { margin: 0 0 12px; font-size: 42px; line-height: 1.15; }
.hero p.lead { font-size: 20px; max-width: 720px; margin: 0 0 24px; color: #DCE6F5; }
.btn { display: inline-block; padding: 13px 24px; border-radius: 6px; text-decoration: none; font-weight: 700; font-size: 17px; margin: 0 12px 12px 0; }
.btn-primary { background: var(--accent); color: var(--navy-dark); }
.btn-secondary { background: transparent; color: #fff; border: 2px solid #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-secondary:hover { background: rgba(255,255,255,0.12); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-dark); }

/* Sections */
section { padding: 44px 0; background: #0B1626; }
section.alt { background: #12233D; }
h2 { color: #fff; font-size: 30px; line-height: 1.25; margin: 0 0 16px; }
h3 { color: #fff; font-size: 21px; margin: 0 0 8px; }
.page-intro { font-size: 19px; color: #C7D3E6; max-width: 780px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.card { background: #12233D; border: 1px solid #2A4368; border-top: 4px solid var(--accent); border-radius: 8px; padding: 0; overflow: hidden; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25); color: #E6EDF7; }
.card img { width: 100%; height: 190px; object-fit: cover; display: block; }
.card h3 { margin-top: 0; padding: 18px 22px 0; }
.card p { margin: 0 0 12px; padding: 0 22px; }
.card a { font-weight: 700; display: block; padding: 0 22px 20px; }
.service-photo { width: calc(100% + 48px); height: 240px; object-fit: cover; display: block; margin: -22px -24px 18px; border-radius: 6px 6px 0 0; }
.about-photo { width: 100%; height: auto; border-radius: 8px; display: block; margin: 0 0 18px; box-shadow: 0 2px 12px rgba(31, 56, 100, 0.18); }
section.alt .card { border-color: #2A4368; }
.service-block { background: #12233D; border: 1px solid #2A4368; border-left: 5px solid var(--accent); border-radius: 6px; padding: 22px 24px; margin: 20px 0; overflow: hidden; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25); color: #E6EDF7; }
.service-block h3 { margin-top: 0; }
.service-block ul { margin: 8px 0 0; padding-left: 20px; }

/* Two columns */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { padding: 6px 0 6px 28px; position: relative; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 700; }

/* Contact */
.contact-strip { background: #12233D; border: 1px solid #2A4368; border-radius: 8px; padding: 24px; color: #E6EDF7; }
.contact-strip p { margin: 4px 0; }
.contact-strip a { font-weight: 700; }
form label { display: block; font-weight: 700; margin: 14px 0 4px; color: #fff; }
form input, form textarea, form select { width: 100%; padding: 11px 12px; border: 1px solid #2A4368; border-radius: 6px; font: inherit; background: #0B1626; color: #fff; }
form textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: 15px; color: #C7D3E6; background: #12233D; border-radius: 6px; padding: 12px 14px; margin-top: 16px; }
.map-link { display: inline-block; margin-top: 12px; font-weight: 700; }

/* Footer */
footer { background: var(--navy-dark); color: #fff; padding: 36px 0 24px; }
footer a { color: #fff; }
footer .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
footer h3 { color: #fff; font-size: 18px; }
footer ul { list-style: none; margin: 0; padding: 0; }
footer li { margin: 6px 0; }
footer p { margin: 6px 0; color: #DCE6F5; }
.copyright { border-top: 1px solid rgba(255,255,255,0.25); margin-top: 28px; padding-top: 16px; font-size: 14px; color: #B9C6DB; }

/* Responsive */
@media (max-width: 820px) {
  .cards { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  footer .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .hero { padding: 40px 0; }
  .logo img { height: 56px; }
  .site-header .container { justify-content: center; text-align: center; }
  nav ul { justify-content: center; }
}
@media (max-width: 480px) {
  body { font-size: 16px; }
  .hero h1 { font-size: 28px; }
  h2 { font-size: 25px; }
  .btn { display: block; text-align: center; margin-right: 0; }
  .topbar .container { justify-content: center; text-align: center; }
}

/* Dark hero — matches the preview */
.hero-dark { background: #0B1626; color: #fff; padding: 64px 0; }
.hero-dark h1 { color: #fff; font-size: 46px; }
.hero-dark .lead { color: #C7D3E6; }
.hero-dark h3 { color: #fff; }
.hero-dark p { color: #C7D3E6; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.eyebrow { color: #7FA0D6; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; font-size: 14px; margin: 0 0 16px; }
.hero-photo { border-radius: 12px; display: block; width: 100%; height: auto; }
.hero-trio { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; }
.hero-trio > div { border-top: 2px solid var(--blue); padding-top: 12px; }
.hero-trio h3 { margin: 0 0 6px; font-size: 18px; }
.hero-trio p { margin: 0; font-size: 16px; }
@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-dark h1 { font-size: 34px; }
}

/* Top photo hero — from the preview */
.hero-photo-bg { background: linear-gradient(rgba(11,22,38,0.72), rgba(11,22,38,0.55)), url('images/hero.jpg') center/cover no-repeat; color: #fff; padding: 88px 0 72px; }
.hero-photo-bg h1 { color: #fff; font-size: 52px; line-height: 1.1; max-width: 720px; }
.hero-photo-bg .lead { color: #E6EDF7; font-size: 21px; max-width: 680px; }
.hero-checks { display: flex; flex-wrap: wrap; gap: 12px 32px; border-top: 1px solid rgba(255,255,255,0.35); padding-top: 22px; margin-top: 36px; font-weight: 700; color: #fff; }
.hero-checks span::before { content: "\2713  "; color: #7FA0D6; }
@media (max-width: 820px) {
  .hero-photo-bg h1 { font-size: 36px; }
  .hero-photo-bg { padding: 56px 0; }
}