/* Canada Air Comfort Lab — shared styles
   Light paper background, navy header, orange CTAs */

:root {
  --navy: #0c2340;
  --navy-mid: #16355a;
  --navy-ink: #071628;
  --orange: #e85d04;
  --orange-deep: #c44d03;
  --paper: #f6f3ec;
  --card: #fffdf8;
  --ink: #1a1714;
  --muted: #5c564e;
  --line: #ddd4c6;
  --smoke: #6b7d8d;
  --damp: #3d6b63;
  --winter: #4a6fa5;
  --star: #c98412;
  --radius: 14px;
  --shadow: 0 10px 28px rgba(12, 35, 64, 0.08);
  --max: 1120px;
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-ui: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-ui);
  font-size: 1.05rem;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--navy-mid);
}

a:hover {
  color: var(--orange);
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 100;
  background: var(--orange);
  color: #fff;
  padding: 0.5rem 0.8rem;
  border-radius: 6px;
}

.skip-link:focus {
  top: 0.75rem;
}

/* Header */

.site-header {
  background: var(--navy);
  color: #f4efe6;
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: inherit;
  text-decoration: none;
  min-width: 0;
}

.brand:hover {
  color: #fff;
}

.brand-mark {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-tag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #c9d4e0;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid #4a6280;
  color: #f4efe6;
  border-radius: 8px;
  padding: 0.4rem 0.65rem;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: #d7e0ea;
  text-decoration: none;
  font-size: 0.92rem;
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
  display: inline-block;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.site-nav a.nav-primary {
  color: #fff;
  background: var(--orange);
}

.site-nav a.nav-primary:hover {
  background: var(--orange-deep);
  color: #fff;
}

.disclosure-bar {
  background: #16355a;
  color: #d5deea;
  font-size: 0.82rem;
  padding: 0.45rem 1.25rem;
  text-align: center;
}

.disclosure-bar a {
  color: #ffd2a8;
}

.disclosure-bar a:hover {
  color: #fff;
}

/* Layout */

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.2rem 1.25rem 3.5rem;
}

.hero {
  padding: 2.6rem 0 1.4rem;
}

.kicker {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  font-weight: 600;
  margin: 0 0 0.55rem;
}

h1,
h2,
h3,
.card-title {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 4.4vw, 3.15rem);
  margin: 0 0 0.75rem;
}

h2 {
  font-size: clamp(1.45rem, 2.6vw, 1.9rem);
  margin: 2.4rem 0 0.8rem;
}

h3 {
  font-size: 1.2rem;
  margin: 0 0 0.4rem;
}

.lede {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.5rem;
}

.note {
  font-size: 0.92rem;
  color: var(--muted);
  background: #efe8db;
  border-left: 4px solid var(--orange);
  padding: 0.75rem 1rem;
  border-radius: 0 10px 10px 0;
}

/* Path chooser */

.path-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1rem;
  margin: 1.6rem 0 0.4rem;
}

.path-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.3rem 1.25rem;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.path-card:hover {
  transform: translateY(-3px);
  border-color: #c9bba4;
  color: inherit;
}

.path-card.hero-path {
  background: linear-gradient(165deg, #0c2340 0%, #1a406d 70%, #2a4f6e 100%);
  color: #f7f2ea;
  border-color: transparent;
}

.path-card.hero-path:hover {
  color: #f7f2ea;
  border-color: transparent;
}

.path-card .path-label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  margin: 0 0 0.45rem;
}

.path-card.hero-path .path-label {
  color: #ffb070;
}

.path-card.damp .path-label {
  color: var(--damp);
}

.path-card.winter .path-label {
  color: var(--winter);
}

.path-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.55rem;
}

.path-card.hero-path h2 {
  font-size: 1.85rem;
}

.path-card p {
  margin: 0 0 1rem;
  color: inherit;
  opacity: 0.92;
  flex: 1;
}

.path-card .path-cta {
  font-weight: 600;
  color: var(--orange);
}

.path-card.hero-path .path-cta {
  color: #ffc089;
}

/* Product cards */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
}

.product-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.product-photo {
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 1rem 1rem 0.35rem;
  background: #fff;
}

.product-photo img {
  width: 100%;
  max-width: 280px;
  height: 220px;
  object-fit: contain;
  display: block;
}

.product-photo span {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  opacity: 0.85;
}

.photo-hepa {
  background: linear-gradient(145deg, #d7e3ee, #8fa8bc);
  color: var(--navy);
}

.photo-filter {
  background: linear-gradient(145deg, #efe4cf, #c9b48a);
  color: #4a3b22;
}

.photo-humid {
  background: linear-gradient(145deg, #d7e6f5, #8eafd4);
  color: #1d3557;
}

.photo-dehum {
  background: linear-gradient(145deg, #d5ebe6, #6fa396);
  color: #1d3d38;
}

.product-body {
  padding: 1.05rem 1.1rem 1.2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.badge {
  display: inline-block;
  width: fit-content;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 650;
  background: #fff1e4;
  color: var(--orange-deep);
  border: 1px solid #f3ccaa;
  border-radius: 999px;
  padding: 0.18rem 0.55rem;
  margin: 0 0 0.5rem;
}

.badge-verify {
  background: #efe8db;
  color: #5c564e;
  border-color: #d5cbb8;
}

.badge-demote {
  background: #f3e6e4;
  color: #7a3b32;
  border-color: #e0c2bc;
}

.specs {
  margin: 0 0 0.75rem;
  padding-left: 1.1rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.specs li {
  margin: 0.18rem 0;
}

.asin {
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0 0 0.55rem;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 1rem;
  margin: 1.2rem 0 0.4rem;
}

.compare-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.15rem 1.1rem;
  box-shadow: var(--shadow);
}

.compare-card.primary {
  background: #0c2340;
  color: #f7f2ea;
  border-color: transparent;
}

.compare-card .path-label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  margin: 0 0 0.45rem;
  color: var(--orange);
}

.compare-card.primary .path-label {
  color: #ffb070;
}

.compare-card h3 {
  margin-top: 0.2rem;
}

.compare-card.primary h3 {
  color: #fff;
}

.compare-card p {
  margin: 0;
  font-size: 0.95rem;
}

.compare-card.primary p {
  color: #d7e0ea;
}

@media (max-width: 860px) {
  .compare-grid {
    grid-template-columns: 1fr;
  }
}

.why {
  color: var(--muted);
  font-size: 0.98rem;
  margin: 0 0 0.7rem;
  flex: 1;
}

.rating {
  margin: 0 0 0.25rem;
  color: var(--star);
  font-weight: 600;
  font-size: 0.95rem;
}

.rating-note {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.85rem;
}

.price {
  margin: 0 0 0.85rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.btn {
  display: inline-block;
  text-align: center;
  text-decoration: none;
  background: var(--orange);
  color: #fff;
  font-weight: 650;
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: var(--orange-deep);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}

.btn-secondary:hover {
  background: var(--navy);
  color: #fff;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.2rem 0 0;
}

/* Content blocks */

.prose {
  max-width: 46rem;
}

.prose p,
.prose li {
  color: var(--ink);
}

.prose ul {
  padding-left: 1.2rem;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin: 0 0 0.65rem;
}

.faq summary {
  font-weight: 650;
  cursor: pointer;
}

.faq details p {
  margin: 0.65rem 0 0.15rem;
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: var(--navy);
  color: #f4efe6;
  font-weight: 600;
}

/* Footer */

.site-footer {
  background: var(--navy-ink);
  color: #c5cfd9;
  padding: 2rem 1.25rem;
  font-size: 0.9rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 1.2rem;
}

.site-footer a {
  color: #ffc089;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
}

.footer-nav a {
  text-decoration: none;
}

/* Utilities */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.fine-print {
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 860px) {
  .path-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    width: 100%;
  }

  .site-nav.is-open {
    display: block;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .site-nav ul {
    flex-direction: column;
    padding: 0.4rem 0 0.6rem;
  }
}

@media (max-width: 520px) {
  .brand-tag {
    display: none;
  }
}