/* =====================================================================
   โยธินการช่าง — ซ่อมหลังคารั่ว | Modern Thai Blessing Theme
   Palette: ม่วง (Royal Purple) + ทอง (Gold) + ขาว (White)
   ===================================================================== */

:root{
  /* Purple scale */
  --purple-900:#2c0f47;
  --purple-800:#3d1563;
  --purple-700:#4e1d7e;
  --purple-600:#5f2a96;
  --purple-500:#7338ad;
  --purple-400:#9560c4;
  --purple-200:#d9c6ec;
  --purple-100:#efe7f7;
  --purple-050:#f8f4fc;

  /* Gold scale */
  --gold-700:#9c7b1f;
  --gold-600:#c19a2e;
  --gold-500:#d4af37;
  --gold-400:#e3c75c;
  --gold-200:#f3e6b8;
  --gold-glow:rgba(212,175,55,.45);

  /* Neutrals */
  --white:#ffffff;
  --ink:#241433;
  --ink-soft:#5a4a6b;
  --line:rgba(95,42,150,.14);
  --line-gold:rgba(212,175,55,.32);
  --bg:#faf7fd;

  --line-green:#06c755;

  --radius:18px;
  --radius-sm:12px;
  --radius-lg:28px;
  --shadow-sm:0 4px 18px rgba(61,21,99,.08);
  --shadow:0 16px 40px rgba(61,21,99,.16);
  --shadow-gold:0 12px 34px rgba(212,175,55,.30);
  --maxw:1180px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Sarabun',system-ui,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:17px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.display{font-family:'Kanit','Sarabun',sans-serif;font-weight:600;line-height:1.25;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- decorative background ---------- */
.thai-bg{position:relative}
.thai-bg::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 12% 20%,rgba(212,175,55,.10),transparent 38%),
    radial-gradient(circle at 88% 8%,rgba(115,56,173,.12),transparent 42%);
}
.gold-text{
  background:linear-gradient(95deg,var(--gold-600),var(--gold-400) 45%,var(--gold-600));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.gold-rule{height:3px;width:84px;border-radius:99px;
  background:linear-gradient(90deg,var(--gold-500),var(--gold-200));}

/* ---------- top contact bar ---------- */
.topbar{background:linear-gradient(90deg,var(--purple-800),var(--purple-600));color:#fff;font-size:14px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:14px;height:40px;flex-wrap:wrap}
.topbar a{display:inline-flex;align-items:center;gap:6px;font-weight:500}
.topbar .gold{color:var(--gold-400)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:46px;width:46px;object-fit:contain;border-radius:10px}
.brand b{font-family:'Kanit';font-size:20px;color:var(--purple-700);line-height:1.05;display:block}
.brand span{font-size:12px;color:var(--gold-700);letter-spacing:.04em}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-weight:500;color:var(--ink-soft);font-size:15px;transition:.2s}
.nav-links a:hover{color:var(--purple-600)}
.btn-call-nav{background:linear-gradient(120deg,var(--purple-700),var(--purple-500));
  color:#fff!important;padding:10px 20px;border-radius:99px;font-weight:600;box-shadow:var(--shadow-gold)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;color:var(--purple-700)}
.nav-toggle svg{width:30px;height:30px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:99px;font-weight:600;font-size:16px;cursor:pointer;border:0;
  transition:transform .15s,box-shadow .2s;font-family:'Sarabun'}
.btn:active{transform:scale(.97)}
.btn-call{background:linear-gradient(120deg,var(--gold-600),var(--gold-400));color:#3a2a00;box-shadow:var(--shadow-gold)}
.btn-call:hover{box-shadow:0 16px 40px var(--gold-glow);transform:translateY(-2px)}
.btn-line{background:var(--line-green);color:#fff;box-shadow:0 12px 30px rgba(6,199,85,.3)}
.btn-line:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--purple-700);border:1.5px solid var(--purple-200)}
.btn-ghost:hover{border-color:var(--purple-500);color:var(--purple-600)}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden;
  background:
    linear-gradient(135deg,rgba(44,15,71,.94),rgba(78,29,126,.86) 55%,rgba(95,42,150,.78)),
    url('https://wcp.co.th/houseroof/pig/a1.jpg') center/cover no-repeat;}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,var(--gold-glow),transparent 68%);pointer-events:none}
.hero .wrap{position:relative;z-index:2;padding:70px 20px 80px}
.badge{display:inline-flex;align-items:center;gap:8px;background:rgba(212,175,55,.18);
  border:1px solid var(--line-gold);color:var(--gold-200);padding:7px 16px;border-radius:99px;
  font-size:14px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:clamp(30px,5.4vw,52px);font-weight:700;max-width:780px}
.hero h1 .gold-text{display:inline}
.hero p.lead{font-size:clamp(17px,2.2vw,21px);max-width:620px;margin:18px 0 12px;color:#efe6fb}
.hero-quick{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:15px;color:#e7d9f7}
.hero-trust b{color:var(--gold-400);font-family:'Kanit';font-size:24px;display:block;line-height:1}
.hero-trust div{min-width:90px}

/* ---------- short answer box (AI snippet) ---------- */
.answer-box{background:#fff;border:1px solid var(--line-gold);border-left:6px solid var(--gold-500);
  border-radius:var(--radius);padding:24px 26px;box-shadow:var(--shadow-sm);margin:-40px auto 0;position:relative;z-index:5;max-width:920px}
.answer-box h2{font-size:20px;color:var(--purple-700);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.answer-box p{color:var(--ink-soft);font-size:16.5px}
.answer-box .tag{display:inline-block;background:var(--purple-100);color:var(--purple-700);
  font-size:13px;font-weight:600;padding:3px 11px;border-radius:99px;margin:8px 6px 0 0}

/* ---------- sections ---------- */
section{position:relative;z-index:1}
.sec{padding:64px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 44px}
.sec-head .kicker{color:var(--gold-700);font-weight:700;letter-spacing:.12em;font-size:13px;text-transform:uppercase}
.sec-head h2{font-size:clamp(26px,3.6vw,38px);color:var(--purple-800);margin:8px 0 14px}
.sec-head .gold-rule{margin:0 auto}
.sec-head p{color:var(--ink-soft)}
.sec-alt{background:linear-gradient(180deg,#fff,var(--purple-050))}
.sec-purple{background:linear-gradient(135deg,var(--purple-800),var(--purple-600));color:#fff}
.sec-purple .sec-head h2{color:#fff}
.sec-purple .sec-head .kicker{color:var(--gold-400)}

/* ---------- services grid ---------- */
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .22s,box-shadow .22s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--line-gold)}
.svc{padding:28px 26px}
.svc .ic{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--purple-100),var(--gold-200));color:var(--purple-700);margin-bottom:16px}
.svc .ic svg{width:30px;height:30px}
.svc h3{font-size:20px;color:var(--purple-800);margin-bottom:8px}
.svc p{color:var(--ink-soft);font-size:15.5px;margin-bottom:14px}
.svc a.more{color:var(--gold-700);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.svc a.more:hover{gap:9px}

/* ---------- steps (วิธีแก้) ---------- */
.steps{counter-reset:s;display:grid;gap:18px;grid-template-columns:repeat(4,1fr)}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-18px;left:22px;
  width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:'Kanit';font-weight:700;font-size:19px;color:#3a2a00;
  background:linear-gradient(135deg,var(--gold-500),var(--gold-300,var(--gold-400)));box-shadow:var(--shadow-gold)}
.step h4{margin:14px 0 6px;color:var(--purple-700);font-size:18px}
.step p{color:var(--ink-soft);font-size:15px}

/* ---------- price calculator ---------- */
.calc{background:#fff;border:1px solid var(--line-gold);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);overflow:hidden;display:grid;grid-template-columns:1.1fr 1fr}
.calc-form{padding:36px}
.calc-form label{display:block;font-weight:600;color:var(--purple-700);margin:16px 0 6px;font-size:14.5px}
.calc-form select,.calc-form input{width:100%;padding:13px 14px;border:1.5px solid var(--purple-200);
  border-radius:12px;font-family:'Sarabun';font-size:16px;background:var(--purple-050);color:var(--ink)}
.calc-form select:focus,.calc-form input:focus{outline:0;border-color:var(--gold-500);background:#fff}
.calc-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.calc-result{background:linear-gradient(150deg,var(--purple-800),var(--purple-600));color:#fff;
  padding:36px;display:flex;flex-direction:column;justify-content:center}
.calc-result .label{color:var(--gold-200);font-size:14px;font-weight:600}
.calc-result .price{font-family:'Kanit';font-size:clamp(32px,5vw,46px);font-weight:700;color:var(--gold-400);margin:6px 0}
.calc-result small{color:#e3d4f5;display:block;margin-bottom:18px}
.calc-result .note{font-size:13px;color:#d9c6ec;border-top:1px solid rgba(255,255,255,.18);padding-top:14px;margin-top:6px}

/* ---------- gallery / portfolio ---------- */
.gallery{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.gallery a{display:block;border-radius:14px;overflow:hidden;aspect-ratio:1/1;box-shadow:var(--shadow-sm);position:relative}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.gallery a:hover img{transform:scale(1.08)}
.gallery a::after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 60%,rgba(44,15,71,.4));opacity:0;transition:.3s}
.gallery a:hover::after{opacity:1}

/* ---------- reviews ---------- */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.review a.rv-img{display:block;aspect-ratio:4/3;overflow:hidden}
.review img{width:100%;height:100%;object-fit:cover}
.review .rv-body{padding:18px 20px}
.stars{color:var(--gold-500);font-size:16px;letter-spacing:2px;margin-bottom:8px}
.review .rv-body p{color:var(--ink-soft);font-size:15px;font-style:italic}
.review .rv-name{margin-top:10px;font-weight:600;color:var(--purple-700);font-size:14px}

/* ---------- FAQ ---------- */
.faq{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.2s}
.faq-item.open{border-color:var(--gold-500);box-shadow:var(--shadow-sm)}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 22px;cursor:pointer;
  font-family:'Kanit';font-weight:500;color:var(--purple-800);font-size:17px}
.faq-q .pm{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--purple-100);
  color:var(--purple-700);display:flex;align-items:center;justify-content:center;font-size:20px;transition:.25s}
.faq-item.open .pm{background:var(--gold-500);color:#3a2a00;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 22px}
.faq-item.open .faq-a{max-height:520px;padding:0 22px 20px}
.faq-a p{color:var(--ink-soft);font-size:15.5px}

/* ---------- areas list ---------- */
.areas{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.areas a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 14px;font-size:14.5px;
  color:var(--ink-soft);transition:.18s;display:flex;align-items:center;gap:7px}
.areas a:hover{border-color:var(--gold-500);color:var(--purple-700);background:var(--purple-050)}
.areas a svg{width:15px;height:15px;color:var(--gold-600);flex:0 0 auto}

/* ---------- article ---------- */
.article-body{max-width:780px;margin:0 auto}
.article-body h2{color:var(--purple-800);font-size:26px;margin:34px 0 12px}
.article-body h3{color:var(--purple-700);font-size:20px;margin:24px 0 8px}
.article-body p{margin-bottom:14px;color:#3a2c47}
.article-body ul,.article-body ol{margin:0 0 16px 22px;color:#3a2c47}
.article-body li{margin-bottom:7px}
.article-body img{border-radius:16px;margin:20px 0;box-shadow:var(--shadow-sm)}
.article-body a{color:var(--gold-700);font-weight:600;text-decoration:underline}
.callout{background:var(--purple-050);border:1px solid var(--line-gold);border-left:5px solid var(--gold-500);
  border-radius:14px;padding:18px 22px;margin:22px 0}
.callout strong{color:var(--purple-700)}
.art-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;
  box-shadow:var(--shadow-sm);transition:.2s}
.art-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-gold)}
.art-card h3{color:var(--purple-800);font-size:18px;margin-bottom:8px}
.art-card p{color:var(--ink-soft);font-size:14.5px;margin-bottom:12px}
.art-card a{color:var(--gold-700);font-weight:600}

/* ---------- breadcrumb ---------- */
.crumb{font-size:14px;color:var(--ink-soft);padding:16px 0}
.crumb a{color:var(--purple-600);font-weight:500}
.crumb a:hover{color:var(--gold-700)}

/* ---------- contact + map ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:30px;align-items:stretch}
.contact-card{background:#fff;border:1px solid var(--line-gold);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow-sm)}
.contact-card h2{color:var(--purple-800);font-size:26px;margin-bottom:8px}
.cinfo{display:flex;gap:14px;align-items:flex-start;margin-top:20px}
.cinfo .ic{flex:0 0 auto;width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--purple-100),var(--gold-200));color:var(--purple-700)}
.cinfo .ic svg{width:24px;height:24px}
.cinfo b{display:block;color:var(--purple-700);font-family:'Kanit';font-weight:500}
.cinfo a.big{font-family:'Kanit';font-size:26px;font-weight:700;color:var(--gold-700)}
.cinfo span{color:var(--ink-soft);font-size:15px}
.map-wrap{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);min-height:340px;border:1px solid var(--line)}
.map-wrap iframe{width:100%;height:100%;min-height:340px;border:0;display:block}

/* ---------- footer ---------- */
.footer{background:linear-gradient(135deg,var(--purple-900),var(--purple-700));color:#e7d9f7;padding:54px 0 28px;margin-top:10px}
.footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px}
.footer .brand b{color:#fff}
.footer .brand span{color:var(--gold-400)}
.footer p{color:#cdbbe4;font-size:14.5px;margin-top:14px;max-width:330px}
.footer h4{color:var(--gold-400);font-family:'Kanit';font-weight:500;margin-bottom:14px;font-size:17px}
.footer ul{list-style:none}
.footer ul li{margin-bottom:9px}
.footer ul a{color:#cdbbe4;font-size:14.5px;transition:.18s}
.footer ul a:hover{color:#fff;padding-left:4px}
.footer .copy{border-top:1px solid rgba(255,255,255,.14);margin-top:34px;padding-top:20px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:#b9a4d4}

/* ---------- floating action buttons ---------- */
.fab{position:fixed;right:18px;bottom:18px;z-index:90;display:flex;flex-direction:column;gap:12px}
.fab a{width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);color:#fff;transition:transform .15s}
.fab a:hover{transform:scale(1.08)}
.fab .f-call{background:linear-gradient(135deg,var(--gold-600),var(--gold-400));color:#3a2a00;animation:pulse 2s infinite}
.fab .f-line{background:var(--line-green)}
.fab a svg{width:28px;height:28px}
@keyframes pulse{0%{box-shadow:0 0 0 0 var(--gold-glow)}70%{box-shadow:0 0 0 16px rgba(212,175,55,0)}100%{box-shadow:0 0 0 0 rgba(212,175,55,0)}}

/* sticky mobile call bar */
.mobile-bar{display:none}

/* ---------- reveal animation ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s,transform .6s}
.js .reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .g3,.g4,.steps,.gallery,.reviews,.contact-grid,.calc,.footer .cols,.g2{grid-template-columns:1fr}
  .calc{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .reviews{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav-links.show{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;
    padding:18px 20px;gap:14px;box-shadow:var(--shadow);border-bottom:1px solid var(--line)}
  .nav-toggle{display:block}
  .fab{bottom:78px}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;background:#fff;
    border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(61,21,99,.12)}
  .mobile-bar a{flex:1;text-align:center;padding:14px 4px;font-weight:600;font-size:15px;display:flex;
    align-items:center;justify-content:center;gap:7px}
  .mobile-bar .m-call{color:var(--purple-700)}
  .mobile-bar .m-line{background:var(--line-green);color:#fff}
  body{padding-bottom:56px}
}
@media(max-width:560px){
  .gallery{grid-template-columns:repeat(2,1fr)}
  .topbar .wrap{justify-content:center}
  .topbar .tb-hide{display:none}
  .hero .wrap{padding:46px 20px 60px}
}