/* ============================================================
   234 BUILDING — shared stylesheet
   Palette: charcoal / slate / mid-gray / paper / brass accent
   Type: Chakra Petch (display, blueprint feel) + Sarabun (body, Thai)
   ============================================================ */

:root{
  --charcoal:#232326;
  --ink:#2e2e32;
  --slate:#55565c;
  --mid-gray:#8c8d92;
  --line-gray:#d8d8d6;
  --paper:#f2f1ee;
  --paper-2:#e9e8e4;
  --white:#ffffff;
  --brass:#b3894f;
  --brass-dark:#8f6c3c;

  --font-display:'Chakra Petch', 'Noto Sans Thai', sans-serif;
  --font-body:'Sarabun', 'Noto Sans Thai', sans-serif;

  --max-w:1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--charcoal);
  margin:0 0 .5em;
  letter-spacing:.01em;
}

.wrap{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 28px;
}

/* ---------- blueprint grid backdrop ---------- */
.blueprint{
  background-image:
    linear-gradient(rgba(140,141,146,.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,141,146,.14) 1px, transparent 1px);
  background-size:42px 42px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(35,35,38,.96);
  backdrop-filter:blur(6px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:78px;
}
.brand{
  display:flex; flex-direction:column; line-height:1.1;
}
.brand-mark{
  font-family:var(--font-display);
  font-size:1.5rem;
  font-weight:700;
  color:var(--white);
  letter-spacing:.03em;
}
.brand-mark span{color:var(--brass);}
.brand-sub{
  font-size:.72rem;
  color:var(--mid-gray);
  letter-spacing:.12em;
  margin-top:2px;
}
nav.main-nav{
  display:flex; gap:2.2rem; align-items:center;
}
nav.main-nav a{
  color:#cfcfd2;
  font-size:.96rem;
  padding:6px 2px;
  border-bottom:2px solid transparent;
  transition:color .2s, border-color .2s;
}
nav.main-nav a:hover,
nav.main-nav a.active{
  color:var(--white);
  border-color:var(--brass);
}
.nav-toggle{display:none;}

@media (max-width:820px){
  nav.main-nav{
    position:absolute; top:78px; left:0; right:0;
    background:var(--charcoal);
    flex-direction:column; align-items:flex-start;
    gap:0; padding:0 28px;
    max-height:0; overflow:hidden;
    transition:max-height .3s ease;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  nav.main-nav.open{max-height:280px; padding:10px 28px 20px;}
  nav.main-nav a{width:100%; padding:12px 0; border-bottom:1px solid rgba(255,255,255,.06);}
  .nav-toggle{
    display:flex; flex-direction:column; gap:5px;
    background:none; border:0; cursor:pointer; padding:8px;
  }
  .nav-toggle span{width:24px; height:2px; background:var(--white); display:block;}
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  color:var(--white);
  background:var(--charcoal);
  overflow:hidden;
}
.hero-media{
  position:absolute; inset:0;
}
.hero-media img{
  width:100%; height:100%; object-fit:cover; opacity:.42;
}
.hero-media::after{
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(35,35,38,.55) 0%, rgba(35,35,38,.88) 100%);
}
.hero-inner{
  position:relative; z-index:2;
  padding:6.5rem 0 5.5rem;
}
.eyebrow{
  display:inline-flex; align-items:center; gap:.6em;
  font-family:var(--font-display);
  font-size:.8rem;
  letter-spacing:.18em;
  color:var(--brass);
  margin-bottom:1.4rem;
}
.eyebrow::before{
  content:''; width:26px; height:1px; background:var(--brass);
}
.hero h1{
  color:var(--white);
  font-size:clamp(2.1rem, 4.6vw, 3.4rem);
  max-width:16ch;
  margin-bottom:1rem;
}
.hero p.lead{
  max-width:52ch;
  color:#d8d8d6;
  font-size:1.08rem;
  margin-bottom:2.2rem;
}
.hero-actions{display:flex; gap:1rem; flex-wrap:wrap;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.5em;
  font-family:var(--font-display);
  font-size:.92rem;
  letter-spacing:.03em;
  padding:.85em 1.7em;
  border-radius:2px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s, color .2s, border-color .2s;
}
.btn-brass{background:var(--brass); color:var(--charcoal);}
.btn-brass:hover{background:var(--brass-dark); color:var(--white);}
.btn-outline{border-color:rgba(255,255,255,.4); color:var(--white);}
.btn-outline:hover{border-color:var(--white); background:rgba(255,255,255,.08);}
.btn-dark{background:var(--charcoal); color:var(--white);}
.btn-dark:hover{background:var(--ink);}

/* ---------- sections ---------- */
section{padding:5.2rem 0;}
.section-head{max-width:640px; margin-bottom:3rem;}
.section-head .eyebrow{color:var(--brass-dark);}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);}
.section-head p{color:var(--slate); font-size:1.02rem;}

.alt-bg{background:var(--white);}

/* ---------- two pillars (signature) ---------- */
.pillars{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  border:1px solid var(--line-gray);
}
.pillar{
  position:relative;
  padding:3rem 2.6rem;
  background:var(--white);
}
.pillar + .pillar{border-left:1px dashed var(--line-gray);}
.pillar-num{
  font-family:var(--font-display);
  font-size:.78rem;
  letter-spacing:.16em;
  color:var(--brass);
  display:block;
  margin-bottom:1rem;
}
.pillar h3{font-size:1.5rem; margin-bottom:.7rem;}
.pillar p{color:var(--slate); margin-bottom:1.4rem;}
.pillar ul{list-style:none; margin:0 0 1.6rem; padding:0;}
.pillar li{
  position:relative;
  padding-left:1.3rem;
  margin-bottom:.6rem;
  color:var(--ink);
  font-size:.96rem;
}
.pillar li::before{
  content:'';
  position:absolute; left:0; top:.6em;
  width:6px; height:6px;
  background:var(--brass);
}
.pillar-img{
  margin-top:1.6rem; height:190px; overflow:hidden;
}
.pillar-img img{width:100%; height:100%; object-fit:cover;}

@media (max-width:820px){
  .pillars{grid-template-columns:1fr;}
  .pillar + .pillar{border-left:0; border-top:1px dashed var(--line-gray);}
}

/* ---------- route line connector (travel motif) ---------- */
.route{
  display:flex; align-items:center; justify-content:center;
  gap:.6rem; margin:0 0 1rem;
  color:var(--mid-gray); font-size:.8rem; letter-spacing:.1em;
}
.route .dot{width:6px;height:6px;border-radius:50%;background:var(--brass);}
.route .dash{flex:0 0 60px; height:1px; border-top:1px dashed var(--mid-gray);}

/* ---------- feature grid (why us) ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line-gray);
  border:1px solid var(--line-gray);
}
.feature{
  background:var(--paper);
  padding:2.1rem 1.7rem;
}
.feature .fnum{
  font-family:var(--font-display);
  font-size:.75rem; color:var(--brass-dark); letter-spacing:.12em;
}
.feature h4{font-size:1.05rem; margin:.6rem 0 .5rem;}
.feature p{color:var(--slate); font-size:.92rem; margin:0;}

@media (max-width:920px){
  .feature-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:560px){
  .feature-grid{grid-template-columns:1fr;}
}

/* ---------- image band ---------- */
.image-band{
  display:grid;
  grid-template-columns:1.3fr 1fr 1fr;
  gap:6px;
  height:340px;
}
.image-band img{width:100%; height:100%; object-fit:cover;}

@media (max-width:820px){
  .image-band{grid-template-columns:1fr; height:auto;}
  .image-band img{height:220px;}
}

/* ---------- stats strip ---------- */
.stats{
  display:flex; flex-wrap:wrap;
  background:var(--charcoal); color:var(--white);
}
.stat{
  flex:1 1 200px;
  padding:2.6rem 2rem;
  border-right:1px solid rgba(255,255,255,.1);
}
.stat:last-child{border-right:0;}
.stat .num{
  font-family:var(--font-display);
  font-size:2.1rem; color:var(--brass);
}
.stat .label{color:#c9c9cc; font-size:.88rem; margin-top:.3rem;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--paper-2);
  border-top:1px solid var(--line-gray);
  border-bottom:1px solid var(--line-gray);
  text-align:center;
  padding:4.2rem 0;
}
.cta-band h2{margin-bottom:.7rem;}
.cta-band p{color:var(--slate); max-width:50ch; margin:0 auto 2rem;}
.cta-actions{display:flex; gap:1rem; justify-content:center; flex-wrap:wrap;}

/* ---------- page header (inner pages) ---------- */
.page-header{
  background:var(--charcoal); color:var(--white);
  padding:4.4rem 0 3.4rem;
  position:relative;
}
.page-header h1{color:var(--white); font-size:clamp(1.9rem,3.6vw,2.6rem); max-width:20ch;}
.page-header p{color:#cfcfd2; max-width:56ch; margin-top:.8rem;}
.crumb{font-size:.82rem; color:var(--mid-gray); letter-spacing:.08em; margin-bottom:1rem;}
.crumb a{color:var(--brass);}

/* ---------- about page blocks ---------- */
.story{
  display:grid; grid-template-columns:1fr 1fr; gap:3.5rem; align-items:center;
}
.story img{width:100%; height:380px; object-fit:cover;}
.story .text p{color:var(--slate); margin-bottom:1.1rem;}
@media (max-width:820px){
  .story{grid-template-columns:1fr;}
  .story img{height:260px;}
}

.value-list{
  display:grid; grid-template-columns:repeat(2,1fr); gap:2.2rem 3rem;
}
.value-list .item{border-top:1px solid var(--line-gray); padding-top:1.1rem;}
.value-list h4{margin-bottom:.4rem;}
.value-list p{color:var(--slate); font-size:.94rem; margin:0;}
@media (max-width:640px){.value-list{grid-template-columns:1fr;}}

.timeline{border-left:1px dashed var(--line-gray); margin-left:8px;}
.timeline .tl-item{position:relative; padding:0 0 2.4rem 2.2rem;}
.timeline .tl-item::before{
  content:''; position:absolute; left:-5px; top:4px;
  width:9px; height:9px; background:var(--brass);
}
.timeline .tl-year{
  font-family:var(--font-display); color:var(--brass-dark);
  font-size:.85rem; letter-spacing:.08em; margin-bottom:.3rem;
}
.timeline h4{margin-bottom:.3rem;}
.timeline p{color:var(--slate); margin:0; font-size:.94rem;}

/* ---------- contact page ---------- */
.contact-grid{
  display:grid; grid-template-columns:1fr 1.15fr; gap:3rem;
}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr;}}

.contact-card{
  background:var(--white); border:1px solid var(--line-gray);
  padding:2.4rem;
}
.contact-card h3{font-size:1.15rem; margin-bottom:1.6rem;}
.contact-row{
  display:flex; gap:1rem; padding:1rem 0;
  border-top:1px solid var(--line-gray);
}
.contact-row:first-of-type{border-top:0;}
.contact-row .ic{
  width:38px; height:38px; flex:0 0 38px;
  background:var(--paper); border:1px solid var(--line-gray);
  display:flex; align-items:center; justify-content:center;
  color:var(--brass-dark); font-family:var(--font-display); font-size:.85rem;
}
.contact-row .txt-label{font-size:.78rem; letter-spacing:.08em; color:var(--mid-gray); text-transform:uppercase;}
.contact-row .txt-val{font-size:1rem; color:var(--ink);}
.contact-row .txt-val a{color:var(--ink);}
.contact-row .txt-val a:hover{color:var(--brass-dark);}

.map-box{
  border:1px solid var(--line-gray);
  height:100%; min-height:420px;
  overflow:hidden;
  background:var(--paper-2);
}
.map-box iframe{width:100%; height:100%; border:0; display:block; min-height:420px;}

.line-highlight{
  margin-top:1.6rem;
  background:var(--charcoal); color:var(--white);
  padding:1.4rem 1.6rem;
  display:flex; align-items:center; justify-content:space-between; gap:1rem; flex-wrap:wrap;
}
.line-highlight .txt-label{color:var(--mid-gray);}
.line-highlight .txt-val{color:var(--white); font-family:var(--font-display); font-size:1.1rem;}

/* ---------- privacy page ---------- */
.policy{max-width:820px;}
.policy h2{font-size:1.3rem; margin-top:2.4rem;}
.policy h2:first-child{margin-top:0;}
.policy p, .policy li{color:var(--slate); font-size:.98rem;}
.policy ul{padding-left:1.3rem;}
.policy .updated{
  color:var(--mid-gray); font-size:.85rem; margin-bottom:2rem;
  border-bottom:1px solid var(--line-gray); padding-bottom:1.4rem;
}

/* ---------- footer ---------- */
footer.site-footer{
  background:var(--charcoal); color:#c9c9cc;
  padding:3.6rem 0 0;
}
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:2.5rem;
  padding-bottom:2.6rem;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.footer-grid h5{
  color:var(--white); font-family:var(--font-display);
  font-size:.85rem; letter-spacing:.1em; margin-bottom:1.1rem;
}
.footer-grid p{font-size:.9rem; color:#b6b6ba; margin:0 0 .6rem;}
.footer-grid a{display:block; font-size:.9rem; color:#b6b6ba; margin-bottom:.6rem;}
.footer-grid a:hover{color:var(--brass);}
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding:1.4rem 0; flex-wrap:wrap; gap:.6rem;
  font-size:.82rem; color:var(--mid-gray);
}
@media (max-width:820px){
  .footer-grid{grid-template-columns:1fr; gap:1.8rem;}
}

/* ---------- misc ---------- */
.skip-link{
  position:absolute; left:-999px; top:0;
  background:var(--brass); color:var(--charcoal); padding:.6em 1em; z-index:100;
}
.skip-link:focus{left:10px; top:10px;}

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

:focus-visible{outline:2px solid var(--brass); outline-offset:2px;}