/* Clear Air Niagara — Air Duct Cleaning Landing Page
   Primary: #1a7a8a | Alt BG: #eef7f9 | Text: #1a1a1a | Accent: #ffffff
   System fonts only — no CDN dependencies
*/

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: #1a1a1a;
  background: #ffffff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; }

p {
  font-size: 1rem;
  color: #3a3a3a;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section-pad {
  padding: 5rem 0;
}

.alt-bg {
  background-color: #eef7f9;
}

.section-title {
  text-align: center;
  margin-bottom: 0.75rem;
  color: #1a1a1a;
}

.section-subtitle {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
  color: #555;
  font-size: 1.05rem;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-block;
  background-color: #1a7a8a;
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 1.75rem;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
  text-align: center;
}

.btn:hover, .btn:focus {
  background-color: #145f6d;
  transform: translateY(-1px);
  outline: none;
}

.btn:active {
  transform: translateY(0);
}

.btn-outline {
  background-color: transparent;
  color: #1a7a8a;
  border-color: #1a7a8a;
}

.btn-outline:hover, .btn-outline:focus {
  background-color: #1a7a8a;
  color: #ffffff;
}

.btn-lg {
  font-size: 1.1rem;
  padding: 1rem 2.25rem;
  border-radius: 8px;
}

/* ============================================================
   STICKY HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 2px solid #1a7a8a;
  box-shadow: 0 2px 12px rgba(26, 122, 138, 0.10);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
  gap: 1rem;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #1a7a8a;
  letter-spacing: -0.02em;
}

.logo-tagline {
  font-size: 0.7rem;
  color: #666;
  font-weight: 400;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
#hero {
  background: linear-gradient(135deg, #1a7a8a 0%, #0f5260 100%);
  color: #ffffff;
  padding: 5rem 0 4.5rem;
  text-align: center;
}

#hero h1 {
  color: #ffffff;
  margin-bottom: 1.1rem;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.88);
  max-width: 600px;
  margin: 0 auto 2.25rem;
  line-height: 1.6;
}

.hero-cta {
  margin-bottom: 3rem;
}

.hero-cta .btn {
  background-color: #ffffff;
  color: #1a7a8a;
  font-size: 1.1rem;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.18);
}

.hero-cta .btn:hover {
  background-color: #eef7f9;
  color: #145f6d;
}

/* Trust badges */
.trust-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 50px;
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  backdrop-filter: blur(4px);
}

.trust-badge .badge-icon {
  font-size: 1.1rem;
  line-height: 1;
}

/* ============================================================
   WHY CLEAN YOUR DUCTS
   ============================================================ */
#why {
  background: #eef7f9;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem;
  margin-top: 1rem;
}

.why-card {
  background: #ffffff;
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
  text-align: center;
  box-shadow: 0 2px 10px rgba(26,122,138,0.07);
  border: 1px solid rgba(26,122,138,0.10);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.why-card:hover {
  box-shadow: 0 6px 22px rgba(26,122,138,0.13);
  transform: translateY(-3px);
}

.why-icon {
  font-size: 2.5rem;
  margin-bottom: 0.85rem;
  display: block;
}

.why-card h3 {
  color: #1a7a8a;
  margin-bottom: 0.6rem;
}

.why-card p {
  font-size: 0.95rem;
  color: #555;
}

/* ============================================================
   SERVICES
   ============================================================ */
#services {
  background: #ffffff;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: #ffffff;
  border: 1px solid #d0e8ec;
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  box-shadow: 0 6px 24px rgba(26,122,138,0.12);
  border-color: #1a7a8a;
  transform: translateY(-3px);
}

.service-icon {
  font-size: 2.25rem;
  margin-bottom: 0.85rem;
  display: block;
}

.service-card h3 {
  color: #1a1a1a;
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.service-card p {
  font-size: 0.92rem;
  color: #555;
  line-height: 1.6;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
#how-it-works {
  background: #eef7f9;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  position: relative;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #1a7a8a;
  color: #ffffff;
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 auto 1rem;
  box-shadow: 0 4px 14px rgba(26,122,138,0.25);
}

.step h3 {
  color: #1a7a8a;
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 0.93rem;
  color: #555;
}

/* ============================================================
   REVIEWS / TESTIMONIALS
   ============================================================ */
#reviews {
  background: #ffffff;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.review-card {
  background: #eef7f9;
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
  border-left: 4px solid #1a7a8a;
  transition: box-shadow 0.2s ease;
}

.review-card:hover {
  box-shadow: 0 6px 20px rgba(26,122,138,0.10);
}

.review-stars {
  color: #f5a623;
  font-size: 1.2rem;
  letter-spacing: 2px;
  margin-bottom: 0.85rem;
  display: block;
}

.review-text {
  font-size: 0.97rem;
  color: #333;
  font-style: italic;
  margin-bottom: 1.1rem;
  line-height: 1.65;
}

.review-author {
  font-weight: 700;
  font-size: 0.9rem;
  color: #1a7a8a;
}

.review-location {
  font-size: 0.82rem;
  color: #888;
  font-style: normal;
}

/* ============================================================
   PRICING
   ============================================================ */
#pricing {
  background: #eef7f9;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.pricing-card {
  background: #ffffff;
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
  text-align: center;
  border: 1px solid #d0e8ec;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.pricing-card:hover {
  border-color: #1a7a8a;
  box-shadow: 0 6px 22px rgba(26,122,138,0.11);
  transform: translateY(-3px);
}

.pricing-card.featured {
  border: 2px solid #1a7a8a;
  box-shadow: 0 4px 18px rgba(26,122,138,0.15);
  position: relative;
}

.featured-label {
  display: inline-block;
  background: #1a7a8a;
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.8rem;
  border-radius: 50px;
  margin-bottom: 0.85rem;
}

.pricing-card h3 {
  color: #1a1a1a;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 2rem;
  font-weight: 800;
  color: #1a7a8a;
  line-height: 1.1;
  margin-bottom: 0.15rem;
}

.pricing-from {
  font-size: 0.8rem;
  font-weight: 400;
  color: #888;
  display: block;
  margin-bottom: 0.85rem;
}

.pricing-desc {
  font-size: 0.88rem;
  color: #666;
}

.pricing-note {
  text-align: center;
  font-size: 0.88rem;
  color: #666;
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  background: #ffffff;
  border-radius: 6px;
  border: 1px solid #d0e8ec;
}

/* ============================================================
   SERVICE AREA
   ============================================================ */
#service-area {
  background: #ffffff;
}

.area-map-note {
  text-align: center;
  font-size: 0.95rem;
  color: #555;
  max-width: 620px;
  margin: 0 auto 2.25rem;
}

.city-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.city-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #eef7f9;
  border: 1px solid #a8d5dd;
  border-radius: 50px;
  padding: 0.5rem 1.15rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #1a7a8a;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.city-tag:hover {
  background: #1a7a8a;
  color: #ffffff;
  border-color: #1a7a8a;
}

.area-cta {
  text-align: center;
  margin-top: 2.5rem;
}

/* ============================================================
   QUOTE FORM
   ============================================================ */
#quote-form {
  background: #eef7f9;
}

.form-wrap {
  background: #ffffff;
  border-radius: 12px;
  padding: 3rem 2.5rem;
  max-width: 740px;
  margin: 0 auto;
  box-shadow: 0 4px 30px rgba(26,122,138,0.10);
  border: 1px solid #d0e8ec;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: inherit;
  font-size: 0.97rem;
  color: #1a1a1a;
  background: #ffffff;
  border: 1px solid #c5dde2;
  border-radius: 6px;
  padding: 0.7rem 0.9rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%231a7a8a' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 12px;
  padding-right: 2.5rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: #1a7a8a;
  box-shadow: 0 0 0 3px rgba(26,122,138,0.12);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #aaa;
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.form-submit-row {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: 0.75rem;
}

.form-submit-row .btn {
  width: 100%;
  max-width: 360px;
  font-size: 1.05rem;
  padding: 1rem 2rem;
}

.form-privacy {
  text-align: center;
  font-size: 0.78rem;
  color: #999;
  margin-top: 0.85rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #1a1a1a;
  color: #ccc;
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-brand .logo-name {
  color: #ffffff;
  font-size: 1.2rem;
  display: block;
  margin-bottom: 0.35rem;
}

.footer-brand .logo-tagline {
  color: #aaa;
  font-size: 0.72rem;
  display: block;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.88rem;
  color: #aaa;
  max-width: 240px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul li a {
  color: #aaa;
  font-size: 0.88rem;
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: #1a7a8a;
}

.footer-contact a {
  color: #aaa;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s;
  margin-bottom: 0.6rem;
}

.footer-contact a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #333;
  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: #666;
}

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 768px) {
  .section-pad {
    padding: 3.5rem 0;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-group.full-width {
    grid-column: 1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .form-wrap {
    padding: 2rem 1.25rem;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 480px) {
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.4rem; }

  .site-header .container {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }

  #hero {
    padding: 3.5rem 0 3rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .trust-badges {
    flex-direction: column;
    align-items: center;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}