/* =========================================================
   Tinterior — Modern Luxury
   Photo-first. Deep navy / charcoal + cream & soft gold.
   Cormorant Garamond (display) + Mitr (Thai). TH + EN.
   ========================================================= */

:root{
  /* palette — navy modern luxury */
  --ink:#14213A;          /* deep navy (กรมท่า) — base ground */
  --ink-2:#0E1729;        /* deeper navy — footer / hero overlay */
  --charcoal:#1C2438;     /* alt dark section */
  --paper:#F1ECE3;        /* light warm sections */
  --greige:#E4DED2;
  --card:#F7F3EA;
  --gold:#CDB689;         /* soft light gold accent */
  --gold-deep:#B79A63;
  --walnut:#6B4C35;
  --cream:#EFE9DC;        /* primary text on dark */
  --muted:#95A0B8;        /* bluish-grey secondary text */
  --line-d:rgba(239,233,220,.16);   /* hairline on dark */
  --line-l:rgba(20,33,58,.14);      /* hairline on light */

  /* type — Cormorant (display) + Jost (small UI) + Mitr (Thai).
     Mitr is in every stack as a fallback so Thai glyphs always resolve. */
  --serif:"Cormorant Garamond", "Mitr", "Times New Roman", Georgia, serif;
  --sans:"Cormorant Garamond", "Mitr", Georgia, serif;
  --ui:"Jost", "Mitr", system-ui, -apple-system, sans-serif;
  --thai:"Mitr", "Jost", system-ui, sans-serif;

  --pad: clamp(1.5rem,6vw,5rem);
  --maxw: 1440px;
  --gap: clamp(1rem,2vw,1.6rem);
  --ease: cubic-bezier(.22,.61,.36,1);
}
html[lang="th"]{ --serif: var(--thai); --sans: var(--thai); --ui:"Mitr","Jost",system-ui,sans-serif; }

*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; font-family:var(--ui); color:var(--cream); background:var(--ink);
  line-height:1.65; font-size:clamp(14px,.92vw,15.5px); font-weight:400;
  -webkit-font-smoothing:antialiased;
}
/* body copy uses the small clean sans; display/headings use the serif */
img{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }

/* language visibility */
html[lang="th"] [data-en],
html[lang="en"] [data-th]{ display:none !important; }

/* ---------- Type ---------- */
h1,h2,h3{ font-family:var(--serif); font-weight:500; line-height:1.06; margin:0; letter-spacing:0; }
html[lang="th"] h1, html[lang="th"] h2, html[lang="th"] h3{ font-family:var(--thai); font-weight:400; letter-spacing:0; }
.display{ font-family:var(--serif); font-size:clamp(2.2rem,6vw,4.4rem); font-weight:500; line-height:1.02; letter-spacing:0; }
html[lang="th"] .display{ font-family:var(--thai); font-weight:400; letter-spacing:0; line-height:1.14; font-size:clamp(1.9rem,5vw,3.6rem); }
.eyebrow{ font-family:var(--ui); font-size:.68rem; letter-spacing:.28em; text-transform:uppercase; color:var(--gold); font-weight:500; }
.lead{ font-family:var(--ui); font-size:clamp(.92rem,1.15vw,1.02rem); color:var(--muted); max-width:56ch; line-height:1.7; }

/* ---------- Layout ---------- */
.wrap{ max-width:var(--maxw); margin-inline:auto; padding-inline:var(--pad); }
.section{ padding-block:clamp(4rem,10vw,8rem); }

/* ---------- Header ---------- */
.site-header{ position:fixed; top:0; left:0; right:0; z-index:50; transition:background .4s, box-shadow .4s; }
.site-header.solid{ background:rgba(14,23,41,.92); backdrop-filter:blur(12px); box-shadow:0 1px 0 var(--line-d); }
.nav{ display:flex; align-items:center; justify-content:space-between; gap:1rem;
  height:70px; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--pad); color:#fff; }
.brand{ display:flex; align-items:center; gap:.55rem; }
.brand svg{ width:30px; height:30px; }
.brand-name{ font-family:var(--serif); font-size:1.3rem; font-weight:500; letter-spacing:.02em; white-space:nowrap; }
html[lang="th"] .brand-name{ font-family:var(--serif); }
.nav-links{ display:flex; align-items:center; gap:clamp(1.2rem,2.4vw,2.2rem); }
.nav-links a{ font-family:var(--ui); font-size:.8rem; letter-spacing:.08em; text-transform:uppercase; color:rgba(239,233,220,.88); position:relative; padding-block:.4rem; }
.nav-links a::after{ content:""; position:absolute; left:0; bottom:.1rem; height:1px; width:0; background:var(--gold); transition:width .3s var(--ease); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after{ width:100%; }
.lang{ display:inline-flex; border:1px solid rgba(255,255,255,.4); border-radius:999px; overflow:hidden; font-size:.74rem; }
.lang button{ font-family:var(--ui); background:transparent; border:0; padding:.34rem .66rem; color:rgba(239,233,220,.8); letter-spacing:.06em; }
.lang button[aria-pressed="true"]{ background:#fff; color:var(--ink); font-weight:600; }
.nav-toggle{ display:none; background:none; border:0; padding:.4rem; }
.nav-toggle span{ display:block; width:22px; height:1.6px; background:#fff; margin:5px 0; transition:.3s; }

/* header on light pages (portfolio/services light variants) — keep dark-on-scroll behaviour, so nav text stays light over hero photos only. Inner light pages get a solid dark header from JS 'solid'. */

/* ---------- Buttons ---------- */
.btn{ font-family:var(--ui); display:inline-flex; align-items:center; gap:.55rem; padding:.85rem 1.6rem; border-radius:1px;
  font-size:.78rem; letter-spacing:.1em; text-transform:uppercase; font-weight:500; border:1px solid transparent; transition:.25s var(--ease); white-space:nowrap; }
.btn svg{ width:18px; height:18px; }
.btn--gold{ background:var(--gold); color:var(--ink); }
.btn--gold:hover{ background:var(--gold-deep); }
.btn--ghost{ border-color:rgba(255,255,255,.6); color:#fff; }
.btn--ghost:hover{ background:#fff; color:var(--ink); }
.btn--line{ background:#06C755; color:#fff; }
.btn--line:hover{ filter:brightness(.94); }
.btn--dark{ background:var(--ink); color:var(--cream); }
.btn--dark:hover{ background:var(--walnut); }
.btn-row{ display:flex; flex-wrap:wrap; gap:.8rem; margin-top:1.8rem; }
.link-arrow{ font-family:var(--ui); display:inline-flex; align-items:center; gap:.45rem; font-size:.76rem; letter-spacing:.12em; text-transform:uppercase; color:var(--gold); font-weight:500; }
.link-arrow svg{ width:16px; transition:transform .3s var(--ease); }
.link-arrow:hover svg{ transform:translateX(4px); }

/* ---------- HERO ---------- */
.hero{ height:100vh; min-height:600px; overflow:hidden; display:flex; align-items:center; justify-content:center; text-align:center; color:#fff; position:relative; }
.hero .bg{ position:absolute; inset:0; }
.hero .bg img{ width:100%; height:100%; object-fit:cover; }
.hero::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(14,23,41,.42),rgba(14,23,41,.55)); }
.hero .content{ position:relative; z-index:5; padding:0 8%; }
.hero .eyebrow{ color:rgba(255,255,255,.85); }
.hero .rule{ width:clamp(40px,5vw,70px); height:2px; background:var(--gold); margin:1.4rem auto; }
.hero .display{ color:#fff; text-shadow:0 2px 40px rgba(0,0,0,.3); }
.hero p.tag{ font-family:var(--serif); font-style:italic; font-size:clamp(1.05rem,1.7vw,1.4rem); color:rgba(239,233,220,.92); margin-top:1.1rem; max-width:36ch; margin-inline:auto; }
html[lang="th"] .hero p.tag{ font-family:var(--thai); font-style:normal; font-size:clamp(.95rem,1.4vw,1.15rem); }
.hero .cnr, .hero .scroll{ font-family:var(--ui); }
.hero .cnr{ position:absolute; bottom:2rem; z-index:5; color:#fff; opacity:.7; font-size:.85rem; letter-spacing:.08em; }
.hero .cnr.l{ left:var(--pad); } .hero .cnr.r{ right:var(--pad); }
.hero .scroll{ position:absolute; bottom:2rem; left:50%; transform:translateX(-50%); z-index:5; color:#fff; opacity:.7; font-size:.72rem; letter-spacing:.2em; text-transform:uppercase; }
@media(max-width:720px){ .hero .cnr{ display:none; } }

/* page hero (inner pages, shorter) */
.page-hero{ position:relative; min-height:56vh; display:flex; align-items:flex-end; overflow:hidden; color:#fff; }
.page-hero .bg{ position:absolute; inset:0; } .page-hero .bg img{ width:100%; height:100%; object-fit:cover; }
.page-hero::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(0,0,0,.25),rgba(0,0,0,.6)); }
.page-hero .wrap{ position:relative; z-index:3; padding-bottom:clamp(2.5rem,6vw,5rem); }
.page-hero .display{ color:#fff; }

/* portfolio hero — centered editorial (dark ground) */
.p-hero-c{ position:relative; overflow:hidden; text-align:center;
  padding:clamp(4rem,9vw,7rem) var(--pad) clamp(2.6rem,5vw,4rem);
  background:var(--ink); }
.p-hero-c::before{ content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(120% 90% at 50% 0%, rgba(205,182,137,.12), transparent 60%); }
.p-hero-c .wrap{ position:relative; z-index:2; max-width:680px; }
.p-hero-c .eyebrow{ margin-bottom:clamp(1rem,2vw,1.4rem); }
.p-hero-c .display{ color:#fff; }
.p-hero-c__rule{ display:block; width:60px; height:1px; margin:clamp(1.3rem,2.4vw,1.7rem) auto;
  background:linear-gradient(90deg,transparent,var(--gold),transparent); position:relative; }
.p-hero-c__rule::after{ content:""; position:absolute; left:50%; top:50%; width:5px; height:5px;
  transform:translate(-50%,-50%) rotate(45deg); background:var(--gold); }
.p-hero-c__lead{ margin-inline:auto; color:var(--muted); max-width:52ch; }

/* ---------- PORTFOLIO bands ---------- */
.work-intro{ padding:clamp(4rem,9vw,7rem) var(--pad) clamp(2rem,4vw,3rem); color:#fff;
  display:flex; align-items:flex-end; justify-content:space-between; gap:2rem; flex-wrap:wrap; border-bottom:1px solid var(--line-d); max-width:var(--maxw); margin-inline:auto; }
.work-intro h2{ font-size:clamp(2.2rem,5.5vw,4rem); margin-top:.5rem; line-height:1.02; text-wrap:balance; }
.work-intro .count{ font-family:var(--ui); font-size:.76rem; color:var(--muted); letter-spacing:.14em; text-transform:uppercase; white-space:nowrap; padding-bottom:.6rem; }

.proj{ position:relative; height:min(88vh,760px); overflow:hidden; display:flex; align-items:flex-end; }
.proj .bg{ position:absolute; inset:0; overflow:hidden; }
.proj .bg img{ width:100%; height:100%; object-fit:cover; transition:transform 1.1s var(--ease); }
.proj:hover .bg img{ transform:scale(1.05); }
.proj::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(0,0,0,.08) 40%,rgba(0,0,0,.74)); }
.proj .num{ font-family:var(--serif); position:absolute; top:clamp(1.5rem,4vw,3rem); left:var(--pad); z-index:3; color:#fff; font-size:clamp(2.8rem,7vw,5rem); font-weight:500; opacity:.35; line-height:1; }
.proj .info{ position:relative; z-index:3; color:#fff; padding:clamp(2rem,5vw,4rem) var(--pad); width:100%;
  display:flex; justify-content:space-between; align-items:flex-end; gap:2rem; flex-wrap:wrap; max-width:var(--maxw); margin-inline:auto; }
.proj .info h3{ font-size:clamp(1.7rem,4vw,2.8rem); line-height:1.04; }
.proj .info .meta{ font-family:var(--ui); font-size:.82rem; letter-spacing:.03em; opacity:.85; margin-top:.5rem; }
.proj .info .cta{ font-family:var(--ui); font-size:.74rem; letter-spacing:.14em; text-transform:uppercase; border:1px solid rgba(255,255,255,.5); padding:.75rem 1.4rem; color:#fff; white-space:nowrap; transition:.25s; }
.proj .info .cta:hover{ background:#fff; color:var(--ink); }

/* ---------- ABOUT (dark) ---------- */
.about{ background:var(--ink); color:var(--cream); }
.about .grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(2rem,6vw,5rem); align-items:center; }
.about .img{ aspect-ratio:4/5; overflow:hidden; }
.about .img img{ width:100%; height:100%; object-fit:cover; }
.about h2{ font-size:clamp(1.8rem,4vw,2.8rem); line-height:1.06; margin:.5rem 0 1.1rem; }
.about p{ color:var(--muted); max-width:48ch; }
.stat-row{ display:flex; gap:clamp(1.5rem,4vw,3rem); margin-top:2rem; flex-wrap:wrap; }
.stat b{ font-family:var(--serif); font-size:2.6rem; font-weight:500; color:var(--gold); display:block; line-height:1; }
.stat span{ font-family:var(--ui); font-size:.72rem; color:var(--muted); letter-spacing:.08em; text-transform:uppercase; }
@media(max-width:760px){ .about .grid{ grid-template-columns:1fr; } .about .img{ aspect-ratio:16/10; } }

/* ---------- SERVICES (charcoal, photo cards) ---------- */
.svc{ background:var(--charcoal); color:var(--cream); }
.svc .head{ display:flex; align-items:flex-end; justify-content:space-between; gap:2rem; flex-wrap:wrap; margin-bottom:clamp(2rem,4vw,3.5rem); }
.svc .eyebrow{ color:var(--gold); }
.svc h2{ font-size:clamp(2rem,5vw,3.2rem); margin-top:.5rem; line-height:1.04; }
.svc .sub{ font-family:var(--ui); font-size:.92rem; color:var(--muted); max-width:36ch; }
.svc .cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gap); }
.svc .card{ position:relative; overflow:hidden; border-radius:6px; aspect-ratio:3/4; display:flex; align-items:flex-end; color:#fff; }
.svc .card .bg{ position:absolute; inset:0; overflow:hidden; }
.svc .card .bg img{ width:100%; height:100%; object-fit:cover; transition:transform .8s var(--ease); }
.svc .card:hover .bg img{ transform:scale(1.06); }
.svc .card::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(0,0,0,.05) 30%,rgba(0,0,0,.72)); }
.svc .card .c{ position:relative; z-index:2; padding:clamp(1.2rem,2vw,1.6rem); width:100%; }
.svc .card .n{ font-family:var(--serif); font-size:.9rem; color:var(--gold); font-weight:500; letter-spacing:.08em; }
.svc .card h3{ font-size:clamp(1.15rem,1.8vw,1.55rem); font-weight:500; margin-top:.1rem; line-height:1.18; }
.svc .card .en{ font-family:var(--ui); font-size:.68rem; opacity:.78; letter-spacing:.08em; text-transform:uppercase; margin-top:.25rem; }
@media(max-width:820px){ .svc .cards{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:520px){ .svc .cards{ grid-template-columns:1fr; } .svc .card{ aspect-ratio:16/10; } }

/* ---------- CONTACT bookend (dark) ---------- */
.contact-band{ position:relative; overflow:hidden; color:#fff; text-align:center; }
.contact-band .bg{ position:absolute; inset:0; } .contact-band .bg img{ width:100%; height:100%; object-fit:cover; }
.contact-band::after{ content:""; position:absolute; inset:0; background:rgba(14,23,41,.78); }
.contact-band .wrap{ position:relative; z-index:3; }
.contact-band .display{ color:#fff; font-size:clamp(2rem,5.5vw,3.6rem); }
.contact-cards{ display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:1rem; margin-top:2.5rem; text-align:left; }
.ccard{ background:rgba(239,233,220,.05); border:1px solid rgba(239,233,220,.16); padding:1.6rem; display:flex; flex-direction:column; gap:.5rem; }
.ccard .k{ font-family:var(--ui); font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; color:var(--gold); }
.ccard .v{ font-family:var(--serif); font-size:1.3rem; } .ccard .v.small{ font-size:1.05rem; word-break:break-word; }

/* generic section intro on light */
.on-light{ background:var(--paper); color:var(--ink); }
.on-light .eyebrow{ color:var(--gold-deep); }
.on-light .lead{ color:var(--muted); }

/* ---------- Project detail ---------- */
.proj-hero{ position:relative; height:min(82vh,760px); overflow:hidden; color:#fff; }
.proj-hero .bg{ position:absolute; inset:0; } .proj-hero .bg img{ width:100%; height:100%; object-fit:cover; }
.proj-hero::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(0,0,0,.2),rgba(0,0,0,.62)); }
.proj-hero .wrap{ position:absolute; inset:auto 0 0 0; z-index:3; padding-bottom:clamp(2.5rem,6vw,4.5rem); }
.proj-detail{ background:var(--ink); }
.proj-meta{ display:flex; gap:2.5rem; flex-wrap:wrap; margin-top:2rem; }
.proj-meta div span{ font-family:var(--ui); display:block; font-size:.68rem; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); }
.proj-meta div b{ font-family:var(--serif); font-weight:500; font-size:1.2rem; color:var(--cream); }
.gallery{ columns:3; column-gap:var(--gap); margin-top:clamp(2rem,4vw,3rem); }
.gallery button{ border:0; padding:0; background:none; width:100%; margin-bottom:var(--gap); display:block; overflow:hidden; border-radius:3px; }
.gallery img{ width:100%; transition:transform .7s var(--ease); }
.gallery button:hover img{ transform:scale(1.04); }

/* ---------- Lightbox ---------- */
.lb{ position:fixed; inset:0; z-index:100; background:rgba(14,12,10,.95); display:none; align-items:center; justify-content:center; }
.lb.open{ display:flex; }
.lb img{ max-width:92vw; max-height:88vh; object-fit:contain; box-shadow:0 20px 60px rgba(0,0,0,.5); }
.lb-btn{ position:absolute; background:rgba(255,255,255,.1); color:#fff; border:0; width:50px; height:50px; border-radius:50%; font-size:1.4rem; display:grid; place-items:center; transition:.2s; }
.lb-btn:hover{ background:rgba(255,255,255,.22); }
.lb-prev{ left:2vw; } .lb-next{ right:2vw; } .lb-close{ top:2vh; right:2vw; }
.lb-count{ position:absolute; bottom:2.5vh; left:50%; transform:translateX(-50%); color:rgba(255,255,255,.7); font-size:.85rem; letter-spacing:.1em; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink-2); color:var(--muted); padding-block:clamp(2.5rem,5vw,4rem); }
.foot-grid{ display:flex; flex-wrap:wrap; gap:2rem 4rem; justify-content:space-between; align-items:flex-start; }
.foot-brand{ display:flex; align-items:center; gap:.55rem; color:var(--cream); font-family:var(--serif); font-size:1.3rem; font-weight:500; }
.foot-brand svg{ width:28px; }
.foot-links{ font-family:var(--ui); display:flex; gap:1.5rem; flex-wrap:wrap; font-size:.82rem; }
.foot-links a{ color:var(--muted); } .foot-links a:hover{ color:var(--cream); }
.foot-note{ font-family:var(--ui); font-size:.78rem; color:var(--muted); margin-top:1.2rem; }

/* ---------- Reveal ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in{ opacity:1; transform:none; }

@media (max-width:820px){
  /* mobile menu: the nav links become a full-width dropdown panel.
     Keep the lang toggle visible in the bar; only the page links collapse. */
  .nav-links{
    position:fixed; inset:70px 0 auto 0; z-index:45;
    background:#0E1729;                 /* fully opaque navy — always readable */
    flex-direction:column; align-items:stretch; gap:0;
    padding:.5rem var(--pad) 1.5rem;
    border-bottom:1px solid var(--line-d);
    box-shadow:0 18px 40px rgba(0,0,0,.35);
    transform:translateY(-130%);
    transition:transform .35s var(--ease);
  }
  .nav-links.open{ transform:none; }
  .nav-links a{ width:100%; padding:.95rem 0; border-bottom:1px solid var(--line-d); font-size:1rem; color:var(--cream); }
  .nav-links .lang{ margin:1rem 0 0; align-self:flex-start; }
  .nav-toggle{ display:block; }
  .gallery{ columns:2; }
}
@media(max-width:520px){ .gallery{ columns:1; } }

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .proj:hover .bg img, .svc .card:hover .bg img, .gallery button:hover img{ transform:none; }
}
a:focus-visible, button:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; }