/* DFW Duct & Chimney Pros — brand styles
   Look: warm cream paper, deep evergreen ink, Texas-sunset orange for actions,
   soft rounded shapes and "airflow" lines. */
:root {
  --ink: #11231f;
  --ink-2: #1c3a33;
  --ink-3: #2a4d44;
  --cream: #f7f2e9;
  --paper: #fffdf9;
  --sage: #dfeadf;
  --sage-2: #c9ddcc;
  --mint: #2f8f76;
  --mint-dark: #23705c;
  --orange: #f26b2d;
  --orange-dark: #d9561b;
  --sun: #ffc94a;
  --text: #22302c;
  --muted: #5d6b66;
  --line: #e7dfd1;
  --r-sm: 12px;
  --r: 20px;
  --r-lg: 32px;
  --shadow: 0 1px 2px rgba(17,35,31,.06), 0 10px 30px -12px rgba(17,35,31,.18);
  --shadow-lg: 0 2px 4px rgba(17,35,31,.06), 0 24px 60px -20px rgba(17,35,31,.28);
  --wrap: 1180px;
  --font-head: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --font-body: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--mint-dark); text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.12; color: var(--ink); margin: 0 0 .55em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.65rem, 3.4vw, 2.4rem); font-weight: 800; margin-top: 1.4em; }
h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; }
li { margin-bottom: .35em; }
::selection { background: var(--sun); color: var(--ink); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 800px; }
.ico { display: inline-block; vertical-align: middle; flex-shrink: 0; }
.hidden { display: none; }

/* Eyebrow + section headings */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--mint-dark); background: var(--sage); padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.sec-head { max-width: 680px; margin-bottom: 36px; }
.sec-head h2 { margin-top: 0; }
.sec-head p { color: var(--muted); font-size: 1.08rem; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.mark { position: relative; white-space: nowrap; color: var(--mint-dark); }
.mark svg { position: absolute; left: 0; bottom: -.18em; width: 100%; height: .4em; }

/* Header */
.site-header {
  background: rgba(255,253,249,.88);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 40;
}
.nav { display: flex; align-items: center; gap: 24px; min-height: 76px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-family: var(--font-head); font-weight: 800; font-size: 1.15rem; letter-spacing: -.02em; line-height: 1.05; white-space: nowrap; }
.logo .logo-mark { width: 40px; height: 40px; border-radius: 12px; background: var(--ink); color: var(--sun); display: grid; place-items: center; }
.logo small { display: block; font-family: var(--font-body); font-weight: 600; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.menu { display: flex; gap: 4px; flex: 1; justify-content: center; }
.menu a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: .94rem; padding: 8px 14px; white-space: nowrap; border-radius: 999px; transition: background .15s; }
.menu a:hover { background: var(--sage); }

/* Mobile menu */
.mnav { display: none; position: relative; }
.mnav summary { list-style: none; cursor: pointer; width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: var(--sage); color: var(--ink); }
.mnav summary::-webkit-details-marker { display: none; }
.mnav[open] summary { background: var(--ink); color: #fff; }
.mnav nav { position: absolute; right: 0; top: 56px; width: min(280px, calc(100vw - 40px)); background: #fff; border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow-lg); padding: 10px; display: grid; }
.mnav nav a { padding: 12px 14px; border-radius: 12px; text-decoration: none; color: var(--ink); font-weight: 600; }
.mnav nav a:hover { background: var(--sage); }
@media (max-width: 1099px) { .mnav { display: block; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px; font-family: var(--font-body);
  font-weight: 700; font-size: 1rem; text-decoration: none; border: 2px solid transparent;
  cursor: pointer; transition: transform .15s, background .15s, box-shadow .15s; line-height: 1.2;
}
.btn:hover { transform: translateY(-2px); }
.btn-call { background: var(--orange); color: #fff; box-shadow: 0 8px 20px -8px rgba(242,107,45,.7); }
.btn-call:hover { background: var(--orange-dark); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--ink-2); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn-light { background: #fff; color: var(--ink); }
.btn-sm { padding: 10px 18px; font-size: .92rem; }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(circle at 1px 1px, rgba(17,35,31,.08) 1px, transparent 0) 0 0 / 22px 22px,
    var(--cream);
  padding: 64px 0 120px;
}
.hero-grid { display: grid; gap: 40px; align-items: center; grid-template-columns: 1fr; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: 1.05fr 1fr; } }
.hero .lead { font-size: 1.18rem; color: var(--muted); max-width: 560px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 28px; }
.trust { display: flex; gap: 10px 22px; flex-wrap: wrap; list-style: none; padding: 0; margin: 0; font-size: .93rem; font-weight: 600; color: var(--ink-2); }
.trust li { display: inline-flex; align-items: center; gap: 8px; margin: 0; }
.trust .ico { color: var(--mint); }
.hero-art { width: 100%; max-width: 560px; height: auto; display: block; margin: 0 auto; }

/* Illustration parts */
.a-bg { fill: var(--sage); }
.a-bg2 { fill: none; stroke: var(--sage-2); stroke-width: 2; stroke-dasharray: 4 10; }
.a-wall { fill: var(--paper); stroke: var(--ink); stroke-width: 3; stroke-linejoin: round; }
.a-roof { fill: var(--ink); }
.a-ink { fill: var(--ink); }
.a-line { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linecap: round; }
.a-soft { fill: none; stroke: var(--line); stroke-width: 3; stroke-linecap: round; }
.a-duct { fill: #e9efe9; stroke: var(--ink); stroke-width: 3; }
.a-flow-in { fill: none; stroke: var(--mint); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 10 12; animation: flow 1.6s linear infinite; }
.a-flow { fill: none; stroke: var(--mint); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 6 9; animation: flow 1.2s linear infinite; }
.a-pipe { fill: none; stroke: var(--orange); stroke-width: 9; stroke-linecap: round; stroke-linejoin: round; }
.a-pipe-o { fill: none; stroke: var(--ink); stroke-width: 15; stroke-linecap: round; stroke-linejoin: round; }
.a-door { fill: var(--orange); stroke: var(--ink); stroke-width: 3; }
.a-glass { fill: #cfe6ef; stroke: var(--ink); stroke-width: 3; }
.a-white { fill: #fff; stroke: var(--ink); stroke-width: 3; }
.a-sun { fill: var(--sun); }
.a-puff { fill: #fff; stroke: var(--ink); stroke-width: 2.5; animation: puff 3.2s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.a-puff.p2 { animation-delay: .5s; } .a-puff.p3 { animation-delay: 1s; }
.a-spark { fill: var(--sun); stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; animation: twinkle 2.4s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.a-spark.s2 { animation-delay: .8s; } .a-spark.s3 { animation-delay: 1.6s; }
@keyframes flow { to { stroke-dashoffset: -44; } }
@keyframes puff { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes twinkle { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(.6); opacity: .6; } }
@media (prefers-reduced-motion: reduce) { .a-flow, .a-flow-in, .a-puff, .a-spark { animation: none; } .btn:hover, .svc:hover { transform: none; } }

/* Quick quote bar (overlaps hero) */
.quick { position: relative; z-index: 5; margin-top: -72px; }
.quick-card {
  background: var(--ink); color: #fff; border-radius: var(--r-lg); padding: 26px 28px;
  box-shadow: var(--shadow-lg); display: grid; gap: 18px; align-items: center; grid-template-columns: 1fr;
}
@media (min-width: 900px) { .quick-card { grid-template-columns: 1fr 2fr; } }
.quick-card h2 { color: #fff; font-size: 1.45rem; margin: 0 0 4px; }
.quick-card p { margin: 0; color: #b9cbc5; font-size: .95rem; }
.quick-form { display: grid; gap: 10px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .quick-form { grid-template-columns: 1fr 1.3fr auto; } }
.quick-form input, .quick-form select {
  width: 100%; height: 54px; padding: 0 20px; border-radius: 999px; border: 0; font: inherit; color: var(--ink); background: #fff;
}
.quick-form .btn { height: 54px; }

/* Sections */
section { padding: 72px 0; }
.soft { background: var(--cream); }
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Service cards */
.svc {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--r);
  padding: 30px 28px 26px; display: flex; flex-direction: column; text-decoration: none; color: inherit;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.svc:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.svc .num { position: absolute; top: 22px; right: 26px; font-family: var(--font-head); font-weight: 800; font-size: 1rem; color: var(--sage-2); }
.svc p { color: var(--muted); }
.svc .go { margin-top: auto; display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); }
.svc:hover .go { color: var(--orange-dark); }
.chip-ico { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; margin-bottom: 20px; background: var(--sage); color: var(--ink); }
.chip-ico.o { background: #fde3d6; color: var(--orange-dark); }
.chip-ico.y { background: #fff1cc; color: #8a6200; }

/* Generic cards (city lists etc.) */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 24px; display: flex; flex-direction: column; transition: box-shadow .2s, transform .2s; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.card p { color: var(--muted); }
.card .more { margin-top: auto; font-weight: 700; text-decoration: none; color: var(--ink); }
.card .more:hover { color: var(--orange-dark); }

/* Dark "why" section */
.dark { background: var(--ink); color: #cfdcd7; position: relative; overflow: hidden; }
.dark h2, .dark h3 { color: #fff; }
.dark .sec-head p { color: #a9bdb6; }
.dark .eyebrow { background: rgba(255,255,255,.08); color: var(--sun); }
.why { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.why > div { background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r); padding: 26px; }
.why .ico { color: var(--sun); margin-bottom: 14px; }
.why p { margin: 0; font-size: .97rem; }

/* Steps */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 22px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); position: relative; }
.steps li { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 28px; position: relative; margin: 0; }
.steps li::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 16px; margin-bottom: 16px;
  background: var(--orange); color: #fff; font-family: var(--font-head); font-weight: 800; font-size: 1.3rem;
}
.steps li:nth-child(2)::before { background: var(--mint); }
.steps li:nth-child(3)::before { background: var(--ink); }
.steps strong { display: block; font-family: var(--font-head); font-size: 1.15rem; color: var(--ink); margin-bottom: 4px; }

/* Season calendar */
.season { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; box-shadow: var(--shadow); }
.season-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.season table { width: 100%; min-width: 720px; border-collapse: separate; border-spacing: 5px; }
.season th { font-size: .78rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; padding-bottom: 4px; }
.season th.row { text-align: left; font-family: var(--font-head); font-size: 1rem; color: var(--ink); text-transform: none; letter-spacing: 0; white-space: nowrap; padding-right: 12px; }
.season td { height: 40px; border-radius: 10px; background: #f1ece2; }
.season td.g { background: var(--sage-2); }
.season td.b { background: var(--mint); }
.season td.h { background: var(--orange); }
.legend { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 16px; font-size: .9rem; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { width: 16px; height: 16px; border-radius: 5px; display: inline-block; }

/* Pills */
.cities { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0 0 1em; }
.cities li { margin: 0; }
.cities a, .cities .chip { display: inline-flex; align-items: center; gap: 6px; padding: 10px 18px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; background: #fff; font-weight: 600; color: var(--ink); transition: all .15s; }
.cities a:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.cities .ico { color: var(--orange); }

.note { background: #fff6e0; border: 1px solid #f6dfa5; padding: 16px 20px; border-radius: var(--r-sm); margin: 1.4em 0; }

/* Inner page head */
.page-head {
  background:
    radial-gradient(circle at 1px 1px, rgba(17,35,31,.08) 1px, transparent 0) 0 0 / 22px 22px,
    var(--cream);
  padding: 22px 0 56px; border-bottom: 1px solid var(--line);
}
.page-head .head-grid { display: flex; gap: 24px; align-items: flex-start; margin-top: 26px; }
.page-head .chip-ico { width: 72px; height: 72px; border-radius: 22px; margin: 6px 0 0; flex-shrink: 0; }
.page-head h1 { margin-bottom: .35em; }
.page-head .lead { font-size: 1.15rem; color: var(--muted); max-width: 720px; }
.page-head .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
@media (max-width: 640px) { .page-head .chip-ico { display: none; } }
.crumbs { font-size: .88rem; color: var(--muted); padding: 18px 0 0; }
.crumbs a { color: var(--muted); }
.page-head .crumbs { padding: 0; }

/* Content + sidebar */
.split { display: grid; gap: 44px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 960px) { .split { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); } }
.split h2:first-child { margin-top: 0; }
.split .grid { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.split .svc { padding: 24px 22px 22px; }
.sidebar .box { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; position: sticky; top: 100px; box-shadow: var(--shadow); }
.sidebar .box h3 { font-size: 1.35rem; }
.signs { list-style: none; padding: 0; display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.signs li { background: var(--cream); border-radius: var(--r-sm); padding: 12px 16px 12px 44px; position: relative; margin: 0; }
.signs li::before { content: ""; position: absolute; left: 16px; top: 18px; width: 14px; height: 14px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px #fde3d6; }

/* FAQ */
.faq details { border: 1px solid var(--line); border-radius: var(--r); padding: 18px 22px; margin-bottom: 12px; background: #fff; transition: box-shadow .15s; }
.faq details[open] { box-shadow: var(--shadow); }
.faq summary { font-family: var(--font-head); font-weight: 700; font-size: 1.08rem; cursor: pointer; color: var(--ink); list-style: none; display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--sage); display: grid; place-items: center; font-size: 1.2rem; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); background: var(--orange); color: #fff; }
.faq details p { margin: .8em 0 0; color: var(--muted); }

/* Form */
.form { display: grid; gap: 14px; }
.form label { font-weight: 600; font-size: .92rem; display: block; margin-bottom: 6px; color: var(--ink); }
.form input, .form select, .form textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--line); border-radius: var(--r-sm); font: inherit; background: var(--paper); color: var(--text); transition: border-color .15s, box-shadow .15s;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--mint); box-shadow: 0 0 0 4px rgba(47,143,118,.15); }
.form textarea { min-height: 90px; }
.form .consent { display: flex; gap: 10px; align-items: flex-start; font-size: .8rem; color: var(--muted); font-weight: 400; line-height: 1.5; }
.form .consent input { width: auto; margin-top: 3px; accent-color: var(--mint); }
.form .btn { width: 100%; }
.form .form-note { font-size: .8rem; color: var(--muted); margin: 0; text-align: center; line-height: 1.5; }

/* CTA card */
.cta { padding: 24px 0 80px; }
.cta-card {
  position: relative; overflow: hidden; border-radius: var(--r-lg); padding: 56px 32px; text-align: center;
  background: var(--orange); color: #fff;
}
.cta-card h2 { color: #fff; margin: 0 0 10px; }
.cta-card p { color: #ffe7da; font-size: 1.1rem; max-width: 560px; margin: 0 auto 26px; }
.cta-card .actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-card .btn-primary { background: var(--ink); }
.cta-card .btn-light:hover { background: var(--cream); }
.cta-card .rings { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .18; pointer-events: none; }

/* Footer */
.site-footer { background: var(--ink); color: #b4c6c0; padding: 64px 0 100px; font-size: .93rem; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { color: var(--sun); }
.site-footer .cols { display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.site-footer h3 { color: #fff; font-size: 1rem; font-family: var(--font-body); text-transform: uppercase; letter-spacing: .08em; }
.site-footer ul { list-style: none; padding: 0; }
.site-footer .logo { color: #fff; margin-bottom: 14px; }
.site-footer .logo small { color: #8fa8a0; }
.site-footer .logo .logo-mark { background: var(--orange); color: #fff; }
.disclaimer { border-top: 1px solid var(--ink-3); margin-top: 32px; padding-top: 22px; font-size: .84rem; color: #8fa8a0; }

/* Mobile sticky call bar */
.callbar { position: fixed; bottom: 12px; left: 12px; right: 12px; display: flex; gap: 8px; z-index: 50; }
.callbar a { flex: 1; padding: 15px 8px; text-align: center; font-weight: 800; text-decoration: none; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; box-shadow: var(--shadow-lg); }
.callbar .c1 { background: var(--orange); color: #fff; }
.callbar .c2 { background: var(--ink); color: #fff; }

@media (min-width: 960px) { .callbar { display: none; } .site-footer { padding-bottom: 48px; } }
@media (max-width: 1099px) {
  .menu { display: none; }
  .nav { justify-content: space-between; min-height: 66px; gap: 12px; }
  .nav .btn-call { margin-left: auto; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav .btn-call { display: none; }
  .hero { padding: 36px 0 104px; }
  section { padding: 56px 0; }
  .quick-card { padding: 22px 20px; }
  .cta-card { padding: 44px 22px; }
}