/* =============================================
   AIR DUCT SPECIALISTS LLC — Global Stylesheet
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --sky: #2986d2;
  --deep: #1565a8;
  --navy: #0d4f8c;
  --accent: #2986d2;
  --white: #ffffff;
  --gray: #5a6a7a;
  --light: #f0f6fc;
  --text: #1a2a3a;
  --border: rgba(41,134,210,0.15);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', sans-serif; color: var(--text); background: var(--white); overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { text-decoration: none; }

/* ── NAV ── */
nav {
  position: sticky; top: 0; left: 0; right: 0; z-index: 200;
  background: #ffffff;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 3%; height: 68px;
  box-shadow: 0 2px 12px rgba(41,134,210,0.15);
  border-bottom: 2px solid #2986d2;
}
.nav-logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo img { height: 56px; width: auto; object-fit: contain; }
.nav-logo span { display: none; }
.nav-logo small { display: none; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: #1a2a3a; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.3px; transition: color 0.2s; }
.nav-links a:hover { color: #2986d2; }
.nav-cta { background: #2986d2; color: #ffffff; padding: 0.6rem 1.4rem; border-radius: 4px; font-weight: 700; font-size: 0.88rem; transition: all 0.2s; white-space: nowrap; }
.nav-cta:hover { background: #1565a8; transform: translateY(-1px); }
.nav-mobile-toggle { display: none; background: none; border: none; color: #2986d2; font-size: 1.5rem; cursor: pointer; }

/* ── BREADCRUMB ── */
.breadcrumb { font-size: 0.78rem; color: rgba(255,255,255,0.5); margin-bottom: 1rem; }
.breadcrumb a { color: var(--accent); }
.breadcrumb span { margin: 0 0.4rem; }

/* ── BUTTONS ── */
.btn { display: inline-block; background: #2986d2; color: #ffffff; padding: 1rem 2rem; border-radius: 4px; font-weight: 700; font-size: 1rem; transition: all 0.2s; }
.btn:hover { background: #1565a8; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(41,134,210,0.35); }
.btn-outline { display: inline-block; background: transparent; color: #fff; padding: 1rem 2rem; border-radius: 4px; font-weight: 600; font-size: 1rem; border: 2px solid rgba(255,255,255,0.6); transition: all 0.2s; }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.15); }
.btn-dark { background: #1565a8; color: #fff; }
.btn-dark:hover { background: #0d4f8c; }

/* ── TRUST BAR ── */
.trust-bar { background: #2986d2; padding: 0.9rem 5%; display: flex; align-items: center; justify-content: center; gap: 2.5rem; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 0.45rem; font-weight: 700; font-size: 0.82rem; color: #ffffff; text-transform: uppercase; letter-spacing: 0.5px; }

/* ── SECTION BASE ── */
section { padding: 88px 5%; }
.section-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--sky); margin-bottom: 0.6rem; }
h2.section-title { font-family: 'Bebas Neue', sans-serif; font-size: clamp(2rem, 3.5vw, 3rem); color: var(--deep); letter-spacing: 1px; margin-bottom: 1rem; line-height: 1.05; }
p.section-intro { font-size: 1.02rem; color: var(--gray); max-width: 650px; line-height: 1.75; margin-bottom: 0.5rem; }

/* ── DARK SECTION ── */
.dark { background: var(--deep); }
.dark .section-label { color: var(--accent); }
.dark h2.section-title { color: #fff; }
.dark p.section-intro { color: rgba(255,255,255,0.6); }

/* ── LIGHT SECTION ── */
.light { background: var(--light); }

/* ── SERVICES GRID ── */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 1.4rem; margin-top: 2.8rem; }
.service-card { background: var(--white); border-radius: 8px; padding: 2rem; color: var(--text); border: 1px solid var(--border); transition: all 0.3s; position: relative; overflow: hidden; }
.service-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--sky); transform: scaleX(0); transition: transform 0.3s; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 14px 40px rgba(26,143,209,0.14); }
.service-card:hover::after { transform: scaleX(1); }
.service-icon { font-size: 2.4rem; margin-bottom: 1rem; }
.service-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--deep); margin-bottom: 0.5rem; }
.service-card p { font-size: 0.9rem; color: var(--gray); line-height: 1.65; }
.service-link { display: inline-flex; align-items: center; gap: 0.3rem; margin-top: 1rem; font-size: 0.82rem; font-weight: 700; color: var(--sky); text-transform: uppercase; letter-spacing: 0.5px; }

/* ── WHY GRID ── */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.5rem; margin-top: 2.8rem; }
.why-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); border-radius: 8px; padding: 1.75rem; }
.why-card .icon { font-size: 1.9rem; margin-bottom: 0.9rem; }
.why-card h3 { font-size: 0.98rem; font-weight: 700; color: #fff; margin-bottom: 0.45rem; }
.why-card p { font-size: 0.86rem; color: rgba(255,255,255,0.52); line-height: 1.65; }

/* ── CITIES GRID ── */
.cities-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(155px, 1fr)); gap: 0.7rem; margin-top: 2.2rem; }
.city-pill { background: var(--light); border: 1px solid var(--border); border-radius: 4px; padding: 0.7rem 1rem; text-align: center; font-size: 0.86rem; font-weight: 600; color: var(--navy); transition: all 0.2s; }
.city-pill:hover { background: var(--sky); color: #fff; border-color: var(--sky); }

/* ── REVIEWS ── */
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1.4rem; margin-top: 2.8rem; }
.review-card { background: var(--white); border-radius: 8px; padding: 1.75rem; box-shadow: 0 2px 18px rgba(0,0,0,0.07); }
.stars { color: var(--accent); font-size: 1rem; letter-spacing: 2px; margin-bottom: 0.8rem; }
.review-text { font-size: 0.91rem; color: var(--gray); line-height: 1.65; margin-bottom: 1rem; font-style: italic; }
.reviewer { font-weight: 700; font-size: 0.87rem; color: var(--deep); }
.review-location { font-size: 0.78rem; color: var(--gray); margin-top: 2px; }

/* ── FAQ ── */
.faq-list { margin-top: 2.4rem; max-width: 820px; }
.faq-item { border-bottom: 1px solid rgba(0,0,0,0.08); }
.faq-item summary { font-weight: 600; font-size: 0.98rem; cursor: pointer; color: var(--deep); list-style: none; display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 0; gap: 1rem; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.4rem; color: var(--sky); flex-shrink: 0; }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 0 1.2rem; font-size: 0.94rem; color: var(--gray); line-height: 1.75; }

/* ── PROCESS STEPS ── */
.process-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1.4rem; margin-top: 2.6rem; }
.process-step { background: var(--white); border-radius: 8px; padding: 1.6rem; border: 1px solid var(--border); }
.step-num { font-family: 'Bebas Neue', sans-serif; font-size: 2.2rem; color: var(--sky); line-height: 1; margin-bottom: 0.5rem; }
.process-step h3 { font-size: 0.94rem; font-weight: 700; color: var(--deep); margin-bottom: 0.4rem; }
.process-step p { font-size: 0.84rem; color: var(--gray); line-height: 1.65; }

/* ── TWO COL ── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: start; }

/* ── CHECKLIST ── */
ul.checklist { list-style: none; margin-top: 1.2rem; }
ul.checklist li { padding: 0.55rem 0; border-bottom: 1px solid rgba(0,0,0,0.06); font-size: 0.94rem; display: flex; gap: 0.75rem; align-items: flex-start; line-height: 1.5; }
ul.checklist li::before { content: '✅'; flex-shrink: 0; margin-top: 1px; }
.dark ul.checklist li { border-color: rgba(255,255,255,0.08); color: rgba(255,255,255,0.8); }

/* ── NEARBY PILLS ── */
.nearby { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.5rem; }
.nearby a { background: var(--light); border: 1px solid var(--border); border-radius: 4px; padding: 0.5rem 1rem; font-size: 0.84rem; font-weight: 600; color: var(--deep); transition: all 0.2s; }
.nearby a:hover { background: var(--sky); color: #fff; }

/* ── HERO (generic) ── */
.hero { background: linear-gradient(135deg, #1565a8 0%, #2986d2 60%, #5aaee8 100%); padding: 80px 5% 88px; color: #fff; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.025'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E"); }
.hero-inner { position: relative; }
.hero-badge { display: inline-block; background: rgba(255,255,255,0.2); border: 1px solid rgba(255,255,255,0.5); color: #ffffff; padding: 0.4rem 1.1rem; border-radius: 20px; font-size: 0.78rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 1.4rem; }
.hero h1 { font-family: 'Bebas Neue', sans-serif; font-size: clamp(3rem, 7vw, 6rem); color: #fff; line-height: 0.95; letter-spacing: 2px; margin-bottom: 1.5rem; }
.hero h1 em { color: #ffffff; font-style: normal; opacity: 0.95; }
.hero p.hero-sub { font-size: 1.12rem; color: rgba(255,255,255,0.8); max-width: 560px; line-height: 1.72; margin-bottom: 2.4rem; }
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 3rem; margin-top: 3.5rem; flex-wrap: wrap; }
.stat-num { font-family: 'Bebas Neue', sans-serif; font-size: 2.6rem; color: #ffffff; line-height: 1; }
.stat-label { font-size: 0.76rem; color: rgba(255,255,255,0.8); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }

/* ── CTA BAND ── */
.cta-band { background: linear-gradient(90deg, #2986d2 0%, #1565a8 100%); padding: 72px 5%; text-align: center; color: #fff; }
.cta-band h2 { font-family: 'Bebas Neue', sans-serif; font-size: clamp(1.8rem, 3.5vw, 3rem); color: #fff; letter-spacing: 2px; margin-bottom: 0.9rem; }
.cta-band p { color: rgba(255,255,255,0.78); font-size: 1.05rem; margin-bottom: 2rem; }
.cta-phones { display: flex; justify-content: center; gap: 1.2rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.cta-phone { background: rgba(255,255,255,0.11); color: #fff; padding: 0.85rem 1.6rem; border-radius: 4px; font-weight: 700; font-size: 1rem; border: 1px solid rgba(255,255,255,0.28); transition: all 0.2s; }
.cta-phone small { display: block; font-size: 0.68rem; font-weight: 400; opacity: 0.75; margin-top: 2px; }
.cta-phone:hover { background: var(--accent); color: var(--deep); border-color: var(--accent); }

/* ── FOOTER ── */
footer { background: #1565a8; padding: 64px 5% 30px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand h3 { font-family: 'Bebas Neue', sans-serif; font-size: 1.5rem; color: #fff; letter-spacing: 2px; margin-bottom: 0.75rem; }
.footer-brand p { font-size: 0.87rem; color: rgba(255,255,255,0.45); line-height: 1.72; }
.footer-col h4 { color: #fff; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 1rem; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.45rem; }
.footer-col a { color: rgba(255,255,255,0.45); font-size: 0.87rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem; }
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.35); }
.footer-bottom a { color: var(--accent); }

/* ── CONTACT FORM ── */
.contact-form { background: var(--white); border-radius: 10px; padding: 2.5rem; box-shadow: 0 4px 32px rgba(0,0,0,0.08); max-width: 640px; }
.form-group { margin-bottom: 1.4rem; }
.form-group label { display: block; font-size: 0.86rem; font-weight: 600; color: var(--deep); margin-bottom: 0.45rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.85rem 1rem; border: 1.5px solid #dce4ed; border-radius: 4px;
  font-family: 'DM Sans', sans-serif; font-size: 0.95rem; color: var(--text);
  transition: border-color 0.2s; background: var(--white);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--sky); }
.form-group textarea { height: 130px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-submit { background: var(--accent); color: var(--deep); border: none; padding: 1rem 2rem; border-radius: 4px; font-weight: 700; font-size: 1rem; cursor: pointer; width: 100%; transition: all 0.2s; font-family: 'DM Sans', sans-serif; }
.form-submit:hover { background: #e8960f; }

/* ── ABOUT ── */
.about-highlight { background: #2986d2; color: #ffffff; border-radius: 8px; padding: 1.75rem; margin-top: 1.5rem; }
.about-highlight h3 { font-weight: 700; font-size: 1rem; margin-bottom: 0.4rem; color: #ffffff; }
.about-highlight p { font-size: 0.9rem; line-height: 1.65; color: rgba(255,255,255,0.9); }

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .two-col { grid-template-columns: 1fr; gap: 2rem; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }
  .hero-stats { gap: 1.5rem; }
  .trust-bar { gap: 0.6rem; flex-wrap: wrap; justify-content: center; }
  .trust-item { font-size: 0.78rem; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 48px 5%; }
  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: clamp(2.4rem, 9vw, 4rem); }
  .hero-btns { flex-direction: column; }
  .hero-btns a { text-align: center; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  h2.section-title { font-size: clamp(1.6rem, 5vw, 2.4rem); }
  .faq-list { margin-top: 1.5rem; }
  .cities-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
}
@media (max-width: 520px) {
  .footer-top { grid-template-columns: 1fr; }
  .cta-phones { flex-direction: column; align-items: center; }
  .process-grid { grid-template-columns: 1fr; }
  section { padding: 40px 4%; }
  .why-card { padding: 1.25rem; }
  .service-card { padding: 1.5rem; }
  nav { padding: 0 4%; }
}