/* ============================================================
   304 HOME DEVELOP — Design tokens
   Concept: สถาปัตยกรรม/พิมพ์เขียว (architectural blueprint)
   ============================================================ */
:root{
  --forest:      #16302A;   /* primary dark green */
  --pine:        #2F4F3E;   /* secondary green */
  --moss:        #7C9473;   /* soft sage accent */
  --moss-pale:   #E7ECE3;   /* pale sage bg */
  --brass:       #B8863B;   /* warm accent / CTA */
  --brass-dark:  #8F672A;
  --cream:       #F7F4EC;   /* main background */
  --paper:       #FBFAF6;   /* card background */
  --ink:         #20241E;   /* body text */
  --ink-soft:    #4B554C;   /* muted text */
  --line:        rgba(22,48,42,0.16);

  --serif: "Noto Serif Thai", "Noto Serif", serif;
  --sans:  "Sarabun", "Noto Sans Thai", sans-serif;

  --maxw: 1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--forest);
  margin:0 0 .5em;
  font-weight:600;
  letter-spacing:.01em;
}
p{margin:0 0 1em;color:var(--ink-soft);}
.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 28px;
}

/* ---------- eyebrow / blueprint labels ---------- */
.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--brass-dark);
  font-weight:700;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:26px;height:1px;
  background:var(--brass-dark);
  display:inline-block;
}

/* ---------- corner registration marks (signature element) ---------- */
.frame{
  position:relative;
  padding:14px;
}
.frame::before,.frame::after,
.frame .fc-tl,.frame .fc-br{ content:""; }
.frame > .fc-tl, .frame > .fc-tr, .frame > .fc-bl, .frame > .fc-br{
  position:absolute;
  width:22px;height:22px;
  border-color:var(--brass);
  border-style:solid;
  z-index:2;
}
.frame > .fc-tl{ top:0; left:0; border-width:2px 0 0 2px; }
.frame > .fc-tr{ top:0; right:0; border-width:2px 2px 0 0; }
.frame > .fc-bl{ bottom:0; left:0; border-width:0 0 2px 2px; }
.frame > .fc-br{ bottom:0; right:0; border-width:0 2px 2px 0; }
.frame .frame-inner{
  overflow:hidden;
  border-radius:2px;
}
.frame img{ width:100%; height:100%; object-fit:cover; }

/* ---------- header / nav ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  background:rgba(247,244,236,0.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 0;
}
.brand{
  display:flex; align-items:center; gap:12px;
  font-family:var(--serif); font-weight:700; font-size:20px;
  color:var(--forest);
}
.brand .mark{
  width:38px;height:38px;
  border:2px solid var(--forest);
  border-radius:3px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:14px;font-weight:700;
  color:var(--forest);
  position:relative;
}
.brand .mark::after{
  content:"";
  position:absolute; inset:5px;
  border:1px solid var(--brass);
}
.brand small{
  display:block;font-family:var(--sans);font-weight:400;
  font-size:11px;letter-spacing:.14em;color:var(--ink-soft);
  text-transform:uppercase;
}
nav.links{ display:flex; gap:34px; align-items:center; }
nav.links a{
  font-size:15px; font-weight:600; color:var(--pine);
  position:relative; padding:4px 0;
}
nav.links a.active, nav.links a:hover{ color:var(--brass-dark); }
nav.links a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px;
  height:2px; background:var(--brass);
}
.nav-cta{
  background:var(--forest); color:var(--cream)!important;
  padding:10px 20px; border-radius:3px; font-weight:700!important;
}
.nav-cta:hover{ background:var(--pine); color:#fff!important; }

.burger{ display:none; background:none;border:1px solid var(--forest); border-radius:4px; padding:8px 10px; cursor:pointer;}
.burger span{display:block;width:20px;height:2px;background:var(--forest);margin:4px 0;}

@media (max-width:880px){
  nav.links{
    position:fixed; inset:64px 0 auto 0; background:var(--paper);
    flex-direction:column; align-items:flex-start; gap:0;
    border-bottom:1px solid var(--line);
    max-height:0; overflow:hidden; transition:max-height .28s ease;
  }
  nav.links.open{ max-height:400px; }
  nav.links a{ padding:16px 28px; width:100%; border-bottom:1px solid var(--line); }
  .nav-cta{ margin:16px 28px; display:inline-block; }
  .burger{ display:block; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 26px; border-radius:3px; font-weight:700; font-size:15px;
  border:1px solid transparent; cursor:pointer;
}
.btn-primary{ background:var(--brass); color:#fff; }
.btn-primary:hover{ background:var(--brass-dark); }
.btn-outline{ border-color:var(--forest); color:var(--forest); background:transparent; }
.btn-outline:hover{ background:var(--forest); color:var(--cream); }

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:86px 0 70px;
  overflow:hidden;
  background:
    linear-gradient(180deg, rgba(22,48,42,0.03), rgba(22,48,42,0)),
    var(--cream);
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:44px 44px;
  opacity:.5;
  mask-image:linear-gradient(180deg, black, transparent 78%);
  pointer-events:none;
}
.hero-grid{
  position:relative; z-index:1;
  display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center;
}
.hero h1{ font-size:clamp(32px,4.6vw,50px); line-height:1.2; }
.hero p.lead{ font-size:18px; max-width:46ch; }
.hero-actions{ display:flex; gap:16px; margin-top:8px; flex-wrap:wrap; }
.hero-figure{ aspect-ratio:4/5; }
@media (max-width:880px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero-figure{ order:-1; aspect-ratio:16/10; }
}

/* ---------- scale divider ---------- */
.scale-divider{
  height:26px; margin:0 0 4px;
  background-image:repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 40px);
  border-top:1px solid var(--line);
}

/* ---------- sections ---------- */
section{ padding:74px 0; }
.section-head{ max-width:640px; margin-bottom:44px; }
.section-head h2{ font-size:clamp(26px,3.2vw,36px); }

/* service / feature cards */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.grid-2{ display:grid; grid-template-columns:1fr 1fr; gap:26px; }
@media (max-width:880px){ .grid-3{grid-template-columns:1fr;} .grid-2{grid-template-columns:1fr;} }

.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:4px;
  padding:30px 26px;
  position:relative;
}
.card .num{
  font-family:var(--serif); font-size:13px; color:var(--brass-dark);
  letter-spacing:.1em; margin-bottom:12px; display:block;
}
.card h3{ font-size:19px; margin-bottom:10px; }
.card p{ margin-bottom:0; font-size:15px; }

.service-photo{
  border-radius:4px; overflow:hidden; margin-bottom:16px;
  aspect-ratio:4/3;
}
.service-photo img{ width:100%;height:100%;object-fit:cover; transition:transform .5s ease; }
.card:hover .service-photo img{ transform:scale(1.05); }

/* dark band */
.band-dark{
  background:var(--forest); color:var(--cream);
}
.band-dark h2, .band-dark h3{ color:var(--cream); }
.band-dark p{ color:rgba(247,244,236,0.78); }
.band-dark .eyebrow{ color:var(--brass); }
.band-dark .eyebrow::before{ background:var(--brass); }

/* process steps */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; position:relative; }
.steps::before{
  content:""; position:absolute; top:20px; left:0; right:0; height:1px;
  background:var(--line);
}
@media (max-width:880px){ .steps{ grid-template-columns:1fr 1fr; row-gap:36px;} .steps::before{display:none;} }
.step{ position:relative; padding-right:16px; }
.step .dot{
  width:40px;height:40px; border-radius:50%; background:var(--paper);
  border:2px solid var(--brass); color:var(--brass-dark);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif); font-weight:700; margin-bottom:16px; position:relative; z-index:1;
}
.step h4{ font-size:16px; margin-bottom:6px; }
.step p{ font-size:14px; }

/* stats */
.stat-row{ display:flex; gap:52px; flex-wrap:wrap; }
.stat b{ display:block; font-family:var(--serif); font-size:34px; color:var(--brass); }
.stat span{ font-size:13px; letter-spacing:.08em; text-transform:uppercase; color:rgba(247,244,236,0.7); }

/* gallery */
.gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.gallery .frame{ aspect-ratio:1/1; }
@media (max-width:880px){ .gallery{ grid-template-columns:1fr 1fr; } }

/* quote/testimonial */
.quote-block{
  border-left:3px solid var(--brass);
  padding-left:26px; font-family:var(--serif); font-size:21px; color:var(--forest);
}

/* CTA band */
.cta-band{
  background:var(--moss-pale);
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.cta-row{
  display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
  padding:50px 0;
}
.cta-row h3{ margin-bottom:6px; font-size:24px; }
.cta-row p{ margin:0; }

/* contact page */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:50px; }
@media (max-width:880px){ .contact-grid{ grid-template-columns:1fr; } }
.info-list{ list-style:none; padding:0; margin:0; }
.info-list li{
  display:flex; gap:16px; padding:18px 0; border-bottom:1px solid var(--line);
}
.info-list .ico{
  width:40px;height:40px;flex:none; border-radius:50%;
  background:var(--forest); color:var(--cream);
  display:flex;align-items:center;justify-content:center; font-size:16px;
}
.info-list h4{ font-size:15px; margin:0 0 4px; color:var(--forest); }
.info-list p{ margin:0; font-size:14.5px; }

form.contact-form{ display:grid; gap:16px; }
form.contact-form input, form.contact-form textarea{
  width:100%; padding:13px 14px; font-family:var(--sans); font-size:15px;
  border:1px solid var(--line); border-radius:3px; background:var(--paper); color:var(--ink);
}
form.contact-form textarea{ min-height:130px; resize:vertical; }
form.contact-form label{ font-size:13px; font-weight:700; color:var(--pine); margin-bottom:4px; display:block; letter-spacing:.03em; }

.map-frame{ border:1px solid var(--line); border-radius:4px; overflow:hidden; }
.map-frame iframe{ width:100%; height:320px; border:0; display:block; }

/* privacy page */
.policy h2{ margin-top:2.2em; font-size:20px; }
.policy h2:first-of-type{ margin-top:0; }
.policy ul{ color:var(--ink-soft); padding-left:22px; }
.policy li{ margin-bottom:8px; }
.updated-badge{
  display:inline-block; font-size:13px; color:var(--pine); background:var(--moss-pale);
  padding:6px 14px; border-radius:20px; margin-bottom:24px; font-weight:600;
}

/* footer */
footer.site{
  background:var(--forest); color:rgba(247,244,236,0.85);
  padding:56px 0 26px;
}
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; margin-bottom:40px; }
@media (max-width:880px){ .footer-grid{ grid-template-columns:1fr; gap:30px; } }
footer.site h4{ color:var(--cream); font-size:14px; letter-spacing:.1em; text-transform:uppercase; margin-bottom:16px; font-family:var(--sans); font-weight:700;}
footer.site .brand{ color:var(--cream); margin-bottom:12px; }
footer.site .brand .mark{ border-color:var(--brass); color:var(--brass); }
footer.site .brand .mark::after{ border-color:var(--cream); }
footer.site p{ color:rgba(247,244,236,0.68); font-size:14.5px; }
footer.site a{ color:rgba(247,244,236,0.82); }
footer.site a:hover{ color:var(--brass); }
.footer-links{ list-style:none; padding:0; margin:0; display:grid; gap:10px; font-size:14.5px; }
.footer-bottom{
  border-top:1px solid rgba(247,244,236,0.14);
  padding-top:22px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  font-size:13px; color:rgba(247,244,236,0.55);
}

/* page hero (inner pages) */
.page-hero{
  padding:56px 0 46px; border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, var(--moss-pale), var(--cream));
}
.page-hero h1{ font-size:clamp(28px,4vw,40px); margin-bottom:10px; }
.crumb{ font-size:13px; color:var(--ink-soft); letter-spacing:.04em; }
.crumb b{ color:var(--brass-dark); }