/* ============================================================
   Chimney Service Experts - stylesheet
   Mobile-first. No external fonts, no frameworks, no trackers.
   ============================================================ */

:root{
  --ink:#15202b;
  --ink-soft:#4a5866;
  --line:#e2e8f0;
  --bg:#ffffff;
  --bg-soft:#f6f8fa;
  --brand:#b8410f;
  --brand-dark:#8f3009;
  --brand-tint:#fdf3ee;
  --green:#1f9d55;
  --green-dark:#17794112;
  --radius:10px;
  --wrap:1140px;
  --shadow:0 1px 3px rgba(21,32,43,.08), 0 8px 24px rgba(21,32,43,.06);
}

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

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth }

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans","Noto Sans Tamil","Latha",Arial,sans-serif;
  font-size:17px;
  line-height:1.65;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:1.95rem}
h2{font-size:1.5rem}
h3{font-size:1.15rem}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
li{margin-bottom:.4em}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 18px}
.section{padding:44px 0}
.section--soft{background:var(--bg-soft)}
.section__intro{max-width:660px;margin-bottom:26px}
.section__intro p{color:var(--ink-soft);margin-bottom:0}
.center{text-align:center}
.muted{color:var(--ink-soft)}
.small{font-size:.9rem}

/* ---- anchor offset -------------------------------------
   The header is sticky, so jumping to #enquiry or to a policy
   section used to land with the heading hidden underneath it.
   -------------------------------------------------------- */
[id]{ scroll-margin-top:96px }
@media (min-width:981px){ [id]{ scroll-margin-top:120px } }

/* ---- skip link ---- */
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:200}
.skip:focus{left:8px;top:8px}

/* ---- top strip ---- */
.topbar{background:var(--ink);color:#cfd8e3;font-size:.83rem}
.topbar .wrap{display:flex;flex-wrap:wrap;gap:6px 20px;justify-content:space-between;align-items:center;padding-top:7px;padding-bottom:7px}
.topbar a{color:#fff}

/* ---- header ---- */
.header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:14px;min-height:66px}

.brand{display:flex;align-items:center;gap:10px;flex:1 1 auto;min-width:0}
.brand:hover{text-decoration:none}
.brand__mark{flex:0 0 auto;width:38px;height:38px;border-radius:9px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.95rem}
.brand__name{font-weight:700;color:var(--ink);font-size:1.02rem;line-height:1.2}
.brand__sub{display:block;font-weight:400;font-size:.74rem;color:var(--ink-soft);letter-spacing:.02em}

.navtoggle{flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 11px;font:inherit;font-size:.85rem;color:var(--ink);cursor:pointer}
.navtoggle__bars{display:block;width:17px;height:2px;background:var(--ink);position:relative}
.navtoggle__bars::before,.navtoggle__bars::after{content:"";position:absolute;left:0;width:17px;height:2px;background:var(--ink)}
.navtoggle__bars::before{top:-5px}
.navtoggle__bars::after{top:5px}

.nav{display:none;width:100%;order:3;border-top:1px solid var(--line);padding:8px 0 14px}
.nav.is-open{display:block}
.nav ul{list-style:none;margin:0;padding:0}
.nav li{margin:0}
.nav a{display:block;padding:10px 2px;color:var(--ink);font-size:.97rem;border-bottom:1px solid var(--line)}
.nav a:hover{color:var(--brand);text-decoration:none}
.nav a[aria-current="page"]{color:var(--brand);font-weight:600}

.langswitch{flex:0 0 auto;display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.langswitch button{border:0;background:#fff;font:inherit;font-size:.82rem;padding:7px 10px;cursor:pointer;color:var(--ink-soft)}
.langswitch button[aria-pressed="true"]{background:var(--ink);color:#fff;font-weight:600}

.header__cta{display:none}

/* ---- buttons ---- */
.btn{display:inline-block;padding:12px 20px;border-radius:8px;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer;font-family:inherit;text-align:center}
.btn:hover{text-decoration:none;opacity:.92}
.btn--primary{background:var(--brand);color:#fff}
.btn--ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn--wa{background:var(--green);color:#fff}
.btn--block{display:block;width:100%}
.btnrow{display:flex;flex-wrap:wrap;gap:10px}

/* ---- hero ---- */
.hero{background:var(--brand-tint);border-bottom:1px solid var(--line)}
.hero .wrap{padding-top:40px;padding-bottom:40px}
.hero h1{margin-bottom:.4em}
.hero__lead{font-size:1.06rem;color:var(--ink-soft);max-width:600px}
.hero__meta{margin:18px 0 22px;padding:0;list-style:none;font-size:.93rem}
.hero__meta li{padding-left:24px;position:relative;color:var(--ink)}
.hero__meta li::before{content:"";position:absolute;left:2px;top:.62em;width:9px;height:9px;border-radius:50%;background:var(--brand)}
.hero__img{margin-top:26px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.hero__img img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---- fallback illustrations (shown only when a photo is missing) ---- */
img[data-illus]{
  background:var(--brand-tint);
  object-fit:contain !important;
}

/* ---- cards ---- */
.grid{display:grid;gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column}
.card h3{margin-bottom:.35em}
.card p{color:var(--ink-soft);font-size:.95rem;flex:1 1 auto}
.card__img{margin:-20px -20px 16px;border-radius:var(--radius) var(--radius) 0 0;overflow:hidden}
.card__img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card__link{font-weight:600;font-size:.93rem}

/* ---- numbered steps ---- */
.steps{list-style:none;counter-reset:s;padding:0;margin:0;display:grid;gap:14px}
.steps li{counter-increment:s;position:relative;padding:16px 16px 16px 58px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.steps li::before{content:counter(s);position:absolute;left:16px;top:16px;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.85rem}
.steps strong{display:block}
.steps span{color:var(--ink-soft);font-size:.93rem}

/* ---- notice / callout ---- */
.notice{border:1px solid var(--line);border-left:3px solid var(--brand);background:var(--bg-soft);border-radius:6px;padding:14px 16px;font-size:.93rem;color:var(--ink-soft)}
.notice strong{color:var(--ink)}
.notice p:last-child{margin-bottom:0}

/* ---- FAQ ---- */
.faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{padding:15px 44px 15px 16px;cursor:pointer;font-weight:600;font-size:.98rem;position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:16px;top:13px;font-size:1.3rem;font-weight:400;color:var(--brand)}
.faq details[open] summary::after{content:"\2212"}
.faq .faq__a{padding:0 16px 15px;color:var(--ink-soft);font-size:.95rem}
.faq .faq__a p:last-child{margin-bottom:0}

/* ---- form ---- */
.formcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.field{margin-bottom:14px}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:5px}
.field .req{color:var(--brand)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 12px;border:1px solid #cbd5e1;border-radius:8px;
  font:inherit;font-size:.95rem;background:#fff;color:var(--ink)
}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
.field textarea{min-height:92px;resize:vertical}
.field__hint{font-size:.8rem;color:var(--ink-soft);margin-top:4px}
.field__err{font-size:.82rem;color:#b91c1c;margin-top:4px;display:none}
.field.is-bad input,.field.is-bad select{border-color:#b91c1c}
.field.is-bad .field__err{display:block}
.hp{position:absolute!important;left:-9999px!important}
.formnote{font-size:.82rem;color:var(--ink-soft);margin-top:12px}
.formok{display:none;background:#ecfdf3;border:1px solid #a7e8c3;color:#12603a;border-radius:8px;padding:16px;font-size:.95rem}
.formok.is-on{display:block}

/* ---- contact blocks ---- */
.infolist{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.infolist li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.infolist h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);margin-bottom:6px}
.infolist p{margin:0;font-size:.97rem}
address{font-style:normal}
.infolist p,.infolist address,.footer address,.prose li,.prose p{overflow-wrap:break-word}
.infolist a,.footer a{overflow-wrap:break-word}

/* ---- prose (policy pages) ---- */
.prose{max-width:780px}
.prose h2{margin-top:1.6em;font-size:1.22rem;padding-top:.2em}
.prose h3{margin-top:1.3em;font-size:1.02rem}
.prose ul{padding-left:1.2em}
.prose__meta{color:var(--ink-soft);font-size:.88rem;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:8px}
.toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:26px}
.toc h2{margin:0 0 .4em;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);padding:0}
.toc ol{margin:0;padding-left:1.2em;font-size:.93rem}
.toc li{margin-bottom:.2em}

/* ---- breadcrumb ---- */
.crumbs{font-size:.85rem;color:var(--ink-soft);padding:12px 0 0}
.crumbs a{color:var(--ink-soft)}
.crumbs span{padding:0 6px}

/* ---- footer ---- */
.footer{background:var(--ink);color:#b9c4d0;font-size:.92rem;margin-top:10px}
.footer .wrap{padding-top:36px;padding-bottom:26px}
.footer h3{color:#fff;font-size:.8rem;text-transform:uppercase;letter-spacing:.07em;margin-bottom:12px}
.footer a{color:#e3e9ef}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{margin-bottom:8px}
.footer__grid{display:grid;gap:28px}
.footer__brand p{max-width:420px}
.footer__note{display:block;margin-top:6px;color:#94a3b3;font-size:.82rem;line-height:1.45}
.footer__legal{border-top:1px solid #2b3947;margin-top:26px;padding-top:18px;font-size:.84rem;display:grid;gap:8px}
.footer__legal p{margin:0}

/* ---- floating action buttons ---- */
.fab{position:fixed;right:14px;bottom:14px;z-index:120;display:flex;flex-direction:column;gap:10px}
.fab a,.fab button{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  box-shadow:0 4px 14px rgba(0,0,0,.22);border:0;cursor:pointer;color:#fff;padding:0
}
.fab svg{width:25px;height:25px;fill:currentColor}
.fab__call{background:var(--brand)}
.fab__wa{background:var(--green)}
.fab__chat{background:var(--ink)}
.fab a:hover,.fab button:hover{text-decoration:none;transform:translateY(-1px)}

/* mobile sticky call/whatsapp bar */
.stickybar{position:fixed;left:0;right:0;bottom:0;z-index:115;display:flex;border-top:1px solid rgba(0,0,0,.08)}
.stickybar a{flex:1 1 0;padding:13px 6px;text-align:center;color:#fff;font-weight:600;font-size:.95rem}
.stickybar a:hover{text-decoration:none}
.stickybar .s-call{background:var(--brand)}
.stickybar .s-wa{background:var(--green)}
@media (min-width:721px){ .stickybar{display:none} }
@media (max-width:720px){
  .fab{bottom:64px;right:12px}
  .fab__call,.fab__wa{display:none}
  body{padding-bottom:52px}
}

/* small phones: stop the header items colliding */
@media (max-width:400px){
  .header .wrap{gap:8px;padding-left:12px;padding-right:12px}
  .brand__mark{width:32px;height:32px;font-size:.8rem;border-radius:7px}
  .brand__name{font-size:.92rem}
  .brand__sub{font-size:.68rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}
  .langswitch button{padding:6px 7px;font-size:.76rem}
  .navtoggle{padding:7px 9px;font-size:.78rem;gap:5px}
  .topbar{font-size:.78rem}
}

/* ---- chatbot ---- */
.chat{
  position:fixed;right:12px;bottom:12px;z-index:130;width:min(360px,calc(100vw - 24px));
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 40px rgba(21,32,43,.24);
  display:none;flex-direction:column;overflow:hidden;max-height:min(560px,calc(100vh - 24px))
}
.chat.is-open{display:flex}

/* while the chat is open, get the floating buttons and the sticky
   Call/WhatsApp bar out from underneath it */
body.chat-open .fab{opacity:0;pointer-events:none}
body.chat-open .stickybar{display:none}

/* on phones the chat becomes a bottom sheet - nothing to overlap */
@media (max-width:720px){
  .chat{left:0;right:0;bottom:0;width:100%;max-width:none;
        border-radius:14px 14px 0 0;max-height:82vh}
  body.chat-open{padding-bottom:0}
}
.chat__head{background:var(--ink);color:#fff;padding:12px 14px;display:flex;align-items:center;gap:10px}
.chat__head strong{font-size:.96rem;display:block}
.chat__head span{font-size:.76rem;color:#aab6c4;display:block}
.chat__close{margin-left:auto;background:transparent;border:0;color:#fff;font-size:1.5rem;line-height:1;cursor:pointer;padding:0 4px}
.chat__body{flex:1 1 auto;overflow-y:auto;padding:14px;background:var(--bg-soft);min-height:210px}
.msg{max-width:86%;padding:9px 12px;border-radius:12px;margin-bottom:9px;font-size:.9rem;line-height:1.5;white-space:pre-line}
.msg--bot{background:#fff;border:1px solid var(--line);border-bottom-left-radius:3px}
.msg--user{background:var(--brand);color:#fff;margin-left:auto;border-bottom-right-radius:3px}
.msg a{color:inherit;text-decoration:underline}
.chat__opts{padding:10px 14px 14px;display:flex;flex-wrap:wrap;gap:7px;border-top:1px solid var(--line);background:#fff;max-height:190px;overflow-y:auto}
.chat__opts button{
  background:#fff;border:1px solid #cbd5e1;border-radius:999px;padding:7px 13px;font:inherit;font-size:.83rem;
  cursor:pointer;color:var(--ink)
}
.chat__opts button:hover{border-color:var(--brand);color:var(--brand)}
.chat__opts .is-cta{background:var(--brand);border-color:var(--brand);color:#fff}
.chat__opts .is-cta:hover{color:#fff;opacity:.92}

/* ---- language visibility ---- */
[data-lang-block="ta"]{display:none}
html[lang="ta"] [data-lang-block="ta"]{display:block}
html[lang="ta"] [data-lang-block="en"]{display:none}
html[lang="ta"] span[data-lang-block="ta"],
html[lang="ta"] li[data-lang-block="ta"]{display:revert}

/* ---- tablet ---- */
@media (min-width:721px){
  h1{font-size:2.4rem}
  h2{font-size:1.75rem}
  .section{padding:60px 0}
  .grid--2{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(3,1fr)}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .infolist{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1.5fr 1fr 1fr}
  .hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;padding-top:56px;padding-bottom:56px}
  .hero__img{margin-top:0}
  .split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
}

/* ---- desktop ---- */
@media (min-width:981px){
  .navtoggle{display:none}
  .nav{display:block;width:auto;order:0;border:0;padding:0;margin-left:auto}
  .nav ul{display:flex;gap:4px;align-items:center}
  .nav a{border:0;padding:9px 11px;border-radius:7px;font-size:.94rem}
  .nav a:hover{background:var(--bg-soft)}
  .header__cta{display:inline-block}
  .grid--4{grid-template-columns:repeat(4,1fr)}
  .steps{grid-template-columns:repeat(5,1fr)}
  .infolist{grid-template-columns:repeat(2,1fr)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}