/* =========================================================
   ช่างรางน้ำฝนมืออาชีพ — Shared Stylesheet
   ธีม: Mint (primary) + Deep Purple (secondary) + Touch of Grey
   Mobile First • Clean • Trust
   ========================================================= */

:root{
  /* --- Mint (primary) --- */
  --mint:        #17b890;
  --mint-dark:   #0e9b78;
  --mint-deep:   #0a7a5e;
  --mint-light:  #d7f5ec;
  --mint-tint:   #eefaf6;

  /* --- Deep Purple (secondary) --- */
  --purple:      #3b1d6e;
  --purple-dark: #2a134f;
  --purple-soft: #efe9f9;

  /* --- Neutrals / Touch of Grey --- */
  --ink:   #1b2430;
  --slate: #56616f;
  --mute:  #8b95a3;
  --line:  #e5eaef;
  --bg:    #f5f8f8;
  --white: #ffffff;

  /* --- Accents --- */
  --line-green: #06c755;   /* LINE brand */
  --star:       #f6a723;

  --shadow-sm: 0 2px 8px rgba(27,36,48,.06);
  --shadow:    0 10px 30px rgba(27,36,48,.10);
  --shadow-lg: 0 22px 55px rgba(27,36,48,.16);

  --radius:   16px;
  --radius-lg:24px;
  --wrap: 1120px;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  font-family:'Sarabun',system-ui,-apple-system,'Segoe UI',sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:17px;
  overflow-x:hidden;
}
h1,h2,h3,h4,.brand-name{ font-family:'Kanit',sans-serif; line-height:1.25; font-weight:600; }
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }

.wrap{ width:100%; max-width:var(--wrap); margin:0 auto; padding:0 20px; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:'Kanit',sans-serif; font-weight:500; font-size:.82rem;
  letter-spacing:.14em; text-transform:uppercase;
  color:var(--mint-deep); background:var(--mint-tint);
  padding:7px 14px; border-radius:999px; border:1px solid var(--mint-light);
}
.section{ padding:66px 0; }
.section-head{ max-width:640px; margin:0 auto 40px; text-align:center; }
.section-head h2{ font-size:clamp(1.6rem,4.5vw,2.4rem); margin:14px 0 12px; }
.section-head p{ color:var(--slate); font-size:1.02rem; }
.text-mint{ color:var(--mint-deep); }
.text-purple{ color:var(--purple); }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-family:'Kanit',sans-serif; font-weight:500; font-size:1rem;
  padding:14px 26px; border-radius:999px; border:2px solid transparent;
  cursor:pointer; transition:transform .15s ease, box-shadow .15s ease, background .2s ease;
  white-space:nowrap;
}
.btn:active{ transform:translateY(1px); }
.btn-call{ background:linear-gradient(135deg,var(--mint),var(--mint-dark)); color:#fff; box-shadow:0 8px 20px rgba(23,184,144,.35); }
.btn-call:hover{ box-shadow:0 12px 26px rgba(23,184,144,.45); transform:translateY(-2px); }
.btn-line{ background:var(--line-green); color:#fff; box-shadow:0 8px 20px rgba(6,199,85,.30); }
.btn-line:hover{ background:#05b64d; transform:translateY(-2px); }
.btn-purple{ background:var(--purple); color:#fff; }
.btn-purple:hover{ background:var(--purple-dark); transform:translateY(-2px); }
.btn-ghost{ background:#fff; color:var(--purple); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--mint); color:var(--mint-deep); }
.btn-sm{ padding:10px 18px; font-size:.92rem; }
.btn-block{ width:100%; }

.ico{ width:20px; height:20px; flex:none; }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(255,255,255,.92); backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-in{ display:flex; align-items:center; gap:16px; height:68px; }
.brand{ display:flex; align-items:center; gap:11px; margin-right:auto; }
.brand img{ height:42px; width:auto; }
.brand-name{ font-size:1.12rem; color:var(--purple); line-height:1.1; }
.brand-name small{ display:block; font-family:'Sarabun',sans-serif; font-weight:400; font-size:.72rem; color:var(--mint-deep); letter-spacing:.02em; }
.nav{ display:none; align-items:center; gap:26px; }
.nav a{ font-family:'Kanit',sans-serif; font-weight:400; font-size:.98rem; color:var(--slate); transition:color .15s; }
.nav a:hover{ color:var(--mint-deep); }
.header-cta{ display:none; align-items:center; gap:10px; }
.menu-toggle{
  display:inline-flex; flex-direction:column; gap:5px; padding:10px;
  background:var(--purple); border-radius:12px; cursor:pointer; border:none;
}
.menu-toggle span{ width:22px; height:2px; background:#fff; border-radius:2px; transition:.25s; }
.menu-toggle.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2){ opacity:0; }
.menu-toggle.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

.mobile-nav{
  position:fixed; inset:68px 0 auto 0; z-index:55;
  background:#fff; border-bottom:1px solid var(--line);
  transform:translateY(-120%); transition:transform .3s ease;
  box-shadow:var(--shadow);
}
.mobile-nav.open{ transform:translateY(0); }
.mobile-nav ul{ padding:12px 20px 20px; }
.mobile-nav a{ display:block; padding:13px 6px; font-family:'Kanit',sans-serif; border-bottom:1px solid var(--line); color:var(--ink); }
.mobile-nav .m-cta{ display:flex; gap:10px; padding-top:16px; }
.mobile-nav .m-cta .btn{ flex:1; }

/* ---------- Hero ---------- */
.hero{ position:relative; background:
    radial-gradient(120% 120% at 85% -10%, var(--mint-tint) 0%, rgba(238,250,246,0) 55%),
    linear-gradient(180deg,#fff 0%, var(--bg) 100%);
  overflow:hidden; padding:40px 0 56px; }
.hero-grid{ display:grid; gap:30px; align-items:center; }
.hero-badge{ margin-bottom:18px; }
.hero h1{ font-size:clamp(1.9rem,6.4vw,3.2rem); font-weight:700; letter-spacing:-.01em; }
.hero h1 .hl{ color:var(--mint-deep); }
.hero p.lead{ margin:16px 0 26px; font-size:1.08rem; color:var(--slate); max-width:520px; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:12px; }
.hero-trust{ display:flex; flex-wrap:wrap; gap:20px 26px; margin-top:26px; padding-top:22px; border-top:1px dashed var(--line); }
.hero-trust div{ }
.hero-trust b{ font-family:'Kanit',sans-serif; font-size:1.5rem; color:var(--purple); display:block; }
.hero-trust span{ font-size:.86rem; color:var(--mute); }
.hero-media{ position:relative; }
.hero-media img{ width:100%; border-radius:var(--radius-lg); box-shadow:var(--shadow-lg); object-fit:cover; aspect-ratio:4/3; }
.hero-media .float-card{
  position:absolute; left:-6px; bottom:-14px; background:#fff; border-radius:16px;
  box-shadow:var(--shadow); padding:12px 16px; display:flex; align-items:center; gap:11px;
  border:1px solid var(--line);
}
.hero-media .float-card .dot{ width:38px;height:38px;border-radius:11px;background:var(--mint-tint);
  display:grid;place-items:center;color:var(--mint-deep); }
.hero-media .float-card b{ font-family:'Kanit',sans-serif; font-size:.98rem; color:var(--ink); }
.hero-media .float-card span{ font-size:.78rem; color:var(--mute); display:block; }

/* ---------- Feature strip ---------- */
.features{ background:var(--white); }
.feature-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.feature{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px 18px; text-align:center; transition:.2s; }
.feature:hover{ border-color:var(--mint-light); box-shadow:var(--shadow-sm); transform:translateY(-3px); }
.feature .fi{ width:54px;height:54px;margin:0 auto 12px;border-radius:15px;
  background:linear-gradient(135deg,var(--mint-tint),var(--mint-light));
  display:grid;place-items:center;color:var(--mint-deep); }
.feature h3{ font-size:1.06rem; margin-bottom:4px; }
.feature p{ font-size:.88rem; color:var(--slate); }

/* ---------- Services ---------- */
.svc-grid{ display:grid; gap:22px; grid-template-columns:1fr; }
.svc-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  overflow:hidden; display:flex; flex-direction:column; transition:.22s;
}
.svc-card:hover{ box-shadow:var(--shadow); transform:translateY(-4px); border-color:var(--mint-light); }
.svc-card .thumb{ position:relative; aspect-ratio:16/10; overflow:hidden; }
.svc-card .thumb img{ width:100%; height:100%; object-fit:cover; transition:.4s; }
.svc-card:hover .thumb img{ transform:scale(1.06); }
.svc-card .thumb .tag{
  position:absolute; top:12px; left:12px; background:rgba(59,29,110,.92); color:#fff;
  font-family:'Kanit',sans-serif; font-size:.76rem; padding:5px 12px; border-radius:999px; }
.svc-card .body{ padding:20px 20px 22px; display:flex; flex-direction:column; flex:1; }
.svc-card h3{ font-size:1.18rem; margin-bottom:8px; }
.svc-card p{ font-size:.92rem; color:var(--slate); flex:1; }
.svc-card .more{
  margin-top:16px; display:inline-flex; align-items:center; gap:7px;
  font-family:'Kanit',sans-serif; font-weight:500; color:var(--mint-deep); }
.svc-card .more::after{ content:"→"; transition:transform .2s; }
.svc-card:hover .more::after{ transform:translateX(4px); }

/* ---------- Why choose ---------- */
.why{ background:linear-gradient(180deg,var(--purple) 0%, var(--purple-dark) 100%); color:#fff; }
.why .section-head h2, .why .section-head p{ color:#fff; }
.why .eyebrow{ background:rgba(255,255,255,.12); color:#d7f5ec; border-color:rgba(255,255,255,.15); }
.why-grid{ display:grid; gap:30px; align-items:center; }
.why-media img{ border-radius:var(--radius-lg); box-shadow:var(--shadow-lg); aspect-ratio:4/3; object-fit:cover; width:100%; }
.why-list{ display:grid; gap:16px; }
.why-list li{ display:flex; gap:14px; align-items:flex-start; }
.why-list .chk{ flex:none; width:30px;height:30px;border-radius:9px;background:var(--mint);
  display:grid;place-items:center;color:#fff;font-weight:700; box-shadow:0 6px 14px rgba(23,184,144,.4); }
.why-list b{ font-family:'Kanit',sans-serif; font-weight:500; display:block; font-size:1.04rem; }
.why-list span{ color:rgba(255,255,255,.72); font-size:.92rem; }

/* ---------- Calculator ---------- */
.calc{ background:var(--white); }
.calc-box{
  max-width:820px; margin:0 auto; background:linear-gradient(180deg,#fff,var(--mint-tint));
  border:1px solid var(--mint-light); border-radius:var(--radius-lg);
  padding:30px 26px; box-shadow:var(--shadow); }
.calc-fields{ display:grid; gap:16px; grid-template-columns:1fr; }
.field label{ display:block; font-family:'Kanit',sans-serif; font-weight:500; font-size:.92rem; margin-bottom:7px; color:var(--purple); }
.field select,.field input{
  width:100%; padding:13px 14px; border:1.5px solid var(--line); border-radius:12px;
  font-family:'Sarabun',sans-serif; font-size:1rem; background:#fff; color:var(--ink);
  transition:border-color .15s, box-shadow .15s; }
.field select:focus,.field input:focus{ outline:none; border-color:var(--mint); box-shadow:0 0 0 4px rgba(23,184,144,.14); }
.calc-result{
  margin-top:22px; background:var(--purple); color:#fff; border-radius:var(--radius);
  padding:22px; text-align:center; }
.calc-result .price{ font-family:'Kanit',sans-serif; font-weight:700; font-size:clamp(1.6rem,6vw,2.4rem); color:#fff; }
.calc-result .price span{ font-size:1rem; font-weight:400; color:#d7f5ec; }
.calc-result small{ display:block; margin-top:6px; color:rgba(255,255,255,.7); font-size:.82rem; }
.calc-note{ font-size:.82rem; color:var(--mute); text-align:center; margin-top:14px; }

/* ---------- Reviews ---------- */
.reviews{ background:var(--bg); }
.rev-grid{ display:grid; gap:18px; grid-template-columns:1fr; }
.rev-card{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:22px 20px; box-shadow:var(--shadow-sm); }
.rev-stars{ color:var(--star); letter-spacing:2px; margin-bottom:10px; font-size:1.05rem; }
.rev-card p{ font-size:.95rem; color:var(--slate); }
.rev-user{ display:flex; align-items:center; gap:12px; margin-top:16px; padding-top:14px; border-top:1px solid var(--line); }
.rev-user img{ width:46px; height:46px; border-radius:50%; object-fit:cover; border:2px solid var(--mint-light); }
.rev-user b{ font-family:'Kanit',sans-serif; font-weight:500; font-size:.98rem; display:block; }
.rev-user span{ font-size:.8rem; color:var(--mute); }

/* ---------- FAQ ---------- */
.faq{ background:var(--white); }
.faq-list{ max-width:800px; margin:0 auto; display:grid; gap:12px; }
.faq-item{ border:1px solid var(--line); border-radius:14px; overflow:hidden; background:#fff; }
.faq-q{ width:100%; text-align:left; background:none; border:none; cursor:pointer;
  padding:18px 20px; font-family:'Kanit',sans-serif; font-weight:500; font-size:1rem; color:var(--ink);
  display:flex; justify-content:space-between; align-items:center; gap:14px; }
.faq-q .pm{ flex:none; width:26px;height:26px;border-radius:8px;background:var(--mint-tint);
  color:var(--mint-deep); display:grid;place-items:center; font-size:1.2rem; transition:.2s; }
.faq-item.open .faq-q .pm{ background:var(--mint); color:#fff; transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a div{ padding:0 20px 18px; color:var(--slate); font-size:.94rem; }

/* ---------- Area ---------- */
.area{ background:linear-gradient(135deg,var(--mint-tint),#fff); }
.area-grid{ display:grid; gap:26px; align-items:center; }
.area-tags{ display:flex; flex-wrap:wrap; gap:9px; margin-top:18px; }
.area-tags span{ background:#fff; border:1px solid var(--mint-light); color:var(--mint-deep);
  font-size:.86rem; padding:7px 14px; border-radius:999px; font-family:'Kanit',sans-serif; }
.area-map{ border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow); border:1px solid var(--line); min-height:280px; }
.area-map iframe{ width:100%; height:100%; min-height:300px; border:0; display:block; }

/* ---------- CTA band ---------- */
.cta-band{ background:linear-gradient(135deg,var(--purple),var(--mint-deep)); color:#fff; }
.cta-band .wrap{ text-align:center; padding-top:56px; padding-bottom:56px; }
.cta-band h2{ font-size:clamp(1.5rem,5vw,2.2rem); color:#fff; }
.cta-band p{ color:rgba(255,255,255,.85); margin:12px auto 24px; max-width:560px; }
.cta-band .btn-call{ background:#fff; color:var(--mint-deep); }
.cta-band .btn-line{ background:var(--line-green); }
.cta-band .hero-cta{ justify-content:center; }

/* ---------- Related pages ---------- */
.related{ background:var(--bg); }
.rel-grid{ display:grid; gap:14px; grid-template-columns:1fr; }
.rel-card{ display:flex; align-items:center; gap:14px; background:#fff; border:1px solid var(--line);
  border-radius:14px; padding:16px 18px; transition:.18s; }
.rel-card:hover{ border-color:var(--mint); box-shadow:var(--shadow-sm); transform:translateX(4px); }
.rel-card .ri{ flex:none; width:44px;height:44px;border-radius:12px;background:var(--mint-tint);
  display:grid;place-items:center;color:var(--mint-deep); }
.rel-card b{ font-family:'Kanit',sans-serif; font-weight:500; display:block; font-size:.98rem; }
.rel-card span{ font-size:.82rem; color:var(--mute); }
.rel-card .go{ margin-left:auto; color:var(--mint-deep); font-size:1.3rem; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--purple-dark); color:rgba(255,255,255,.78); padding:52px 0 120px; }
.footer-grid{ display:grid; gap:30px; grid-template-columns:1fr; }
.footer-brand img{ height:46px; margin-bottom:14px; background:#fff; padding:6px 10px; border-radius:12px; }
.footer-brand p{ font-size:.9rem; max-width:340px; }
.footer h4{ color:#fff; font-size:1.05rem; margin-bottom:14px; }
.footer-col a,.footer-col li{ display:block; padding:6px 0; font-size:.92rem; color:rgba(255,255,255,.72); }
.footer-col a:hover{ color:var(--mint); }
.footer-contact li{ display:flex; gap:10px; align-items:flex-start; }
.footer-contact .ci{ color:var(--mint); flex:none; margin-top:3px; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.12); margin-top:34px; padding-top:22px;
  font-size:.82rem; color:rgba(255,255,255,.55); text-align:center; }

/* ---------- Mobile sticky call bar ---------- */
.callbar{
  position:fixed; left:0; right:0; bottom:0; z-index:70;
  display:flex; gap:10px; padding:9px 12px; background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px); border-top:1px solid var(--line); box-shadow:0 -6px 20px rgba(27,36,48,.08); }
.callbar .btn{ flex:1; padding:13px; }

/* ---------- Breadcrumb ---------- */
.crumb{ background:var(--white); border-bottom:1px solid var(--line); }
.crumb .wrap{ padding-top:14px; padding-bottom:14px; }
.crumb ol{ display:flex; flex-wrap:wrap; gap:8px; align-items:center; font-size:.86rem; color:var(--mute); }
.crumb a{ color:var(--mint-deep); }
.crumb li::after{ content:"/"; margin-left:8px; color:var(--line); }
.crumb li:last-child::after{ content:""; }

/* ---------- Article (service page) ---------- */
.article{ background:#fff; }
.article-grid{ display:grid; gap:34px; grid-template-columns:1fr; }
.prose h2{ font-size:1.5rem; margin:26px 0 12px; color:var(--purple); }
.prose h3{ font-size:1.18rem; margin:20px 0 8px; }
.prose p{ margin-bottom:14px; color:var(--slate); }
.prose ul{ margin:6px 0 18px; display:grid; gap:9px; }
.prose ul li{ display:flex; gap:11px; align-items:flex-start; }
.prose ul li::before{ content:"✓"; color:var(--mint-deep); font-weight:700; flex:none; }
.prose img{ border-radius:var(--radius); box-shadow:var(--shadow-sm); margin:8px 0 18px; }
.price-table{ width:100%; border-collapse:collapse; margin:10px 0 20px; background:#fff;
  border:1px solid var(--line); border-radius:12px; overflow:hidden; }
.price-table th,.price-table td{ padding:13px 15px; text-align:left; border-bottom:1px solid var(--line); font-size:.94rem; }
.price-table th{ background:var(--purple-soft); font-family:'Kanit',sans-serif; font-weight:500; color:var(--purple); }
.price-table td:last-child{ font-family:'Kanit',sans-serif; color:var(--mint-deep); font-weight:500; }
.price-table tr:last-child td{ border-bottom:none; }
.side-card{ background:var(--mint-tint); border:1px solid var(--mint-light); border-radius:var(--radius-lg);
  padding:24px 22px; position:sticky; top:88px; }
.side-card h3{ color:var(--purple); margin-bottom:6px; }
.side-card p{ font-size:.9rem; color:var(--slate); margin-bottom:16px; }
.side-card .btn{ width:100%; margin-bottom:10px; }
.mini-gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:10px; margin:14px 0 6px; }
.mini-gallery img{ aspect-ratio:1; object-fit:cover; border-radius:12px; }

/* ---------- Responsive ---------- */
@media(min-width:640px){
  .feature-grid{ grid-template-columns:repeat(4,1fr); }
  .rev-grid{ grid-template-columns:repeat(2,1fr); }
  .svc-grid{ grid-template-columns:repeat(2,1fr); }
  .rel-grid{ grid-template-columns:repeat(2,1fr); }
  .calc-fields{ grid-template-columns:1fr 1fr; }
  .footer-grid{ grid-template-columns:2fr 1fr 1.4fr; }
}
@media(min-width:900px){
  .nav{ display:flex; }
  .header-cta{ display:flex; }
  .menu-toggle{ display:none; }
  .callbar{ display:none; }
  .site-footer{ padding-bottom:52px; }
  .hero-grid{ grid-template-columns:1.05fr .95fr; }
  .why-grid{ grid-template-columns:1fr 1fr; }
  .area-grid{ grid-template-columns:1fr 1fr; }
  .rev-grid{ grid-template-columns:repeat(3,1fr); }
  .svc-grid{ grid-template-columns:repeat(2,1fr); }
  .rel-grid{ grid-template-columns:repeat(4,1fr); }
  .article-grid{ grid-template-columns:1.7fr 1fr; }
  .body-lg .svc-grid{ grid-template-columns:repeat(4,1fr); }
}
@media(min-width:1024px){
  .svc-grid{ grid-template-columns:repeat(4,1fr); }
}
@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}

/* ---------- Area directory & nearby ---------- */
.dir{ background:var(--bg); }
.dir-group{ margin-bottom:30px; }
.dir-group h3{ font-family:'Kanit',sans-serif; font-weight:500; font-size:1.12rem; color:var(--purple);
  margin-bottom:14px; display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.dir-group h3 .cnt{ font-family:'Sarabun',sans-serif; font-weight:400; font-size:.78rem; color:var(--mute);
  background:#fff; border:1px solid var(--line); padding:2px 11px; border-radius:999px; }
.dir-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:8px; }
.dir-grid a{ display:block; padding:9px 12px; background:#fff; border:1px solid var(--line);
  border-radius:10px; font-size:.88rem; color:var(--slate); transition:.15s; }
.dir-grid a:hover{ border-color:var(--mint); color:var(--mint-deep); transform:translateY(-2px); box-shadow:var(--shadow-sm); }
@media(min-width:640px){ .dir-grid{ grid-template-columns:repeat(3,1fr);} }
@media(min-width:1000px){ .dir-grid{ grid-template-columns:repeat(5,1fr);} }