/* AIT Thailand — shared styles. No external fonts/CDN (loads in CN too). */
:root{
  --ink:#0E3B2E;        /* temple green */
  --pine:#0A2C22;       /* deep section bg */
  --gold:#C8A24B;       /* garuda gold */
  --gold-soft:#E7D6A8;
  --paper:#F6F1E7;      /* ivory */
  --paper-2:#FBF8F1;
  --seal:#9B2D20;       /* chop red — used sparingly */
  --text:#23241F;
  --muted:#5C5F54;
  --line:#D9D0BC;
  --serif:"Noto Serif","Songti SC","Times New Roman",Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI","Noto Sans Thai","PingFang SC","Microsoft YaHei",sans-serif;
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--sans);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.serif{font-family:var(--serif)}

/* top bar */
.topbar{background:var(--pine);color:var(--paper);font-size:13.5px}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:46px;gap:16px}
.brand{font-family:var(--serif);font-weight:700;letter-spacing:.14em;font-size:18px;color:var(--gold-soft)}
.brand span{color:var(--paper)}
.topnav a{color:var(--paper);text-decoration:none;opacity:.85;margin-left:18px}
.topnav a:hover{opacity:1;color:var(--gold-soft)}
.lic{opacity:.6;font-variant-numeric:tabular-nums}

/* hero */
.hero{background:linear-gradient(160deg,var(--ink),var(--pine));color:var(--paper);
  padding:64px 0 72px;border-bottom:3px solid var(--gold)}
.eyebrow{font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);
  display:flex;align-items:center;gap:10px}
.eyebrow::after{content:"";height:1px;width:54px;background:var(--gold);opacity:.6}
.hero h1{font-family:var(--serif);font-weight:700;line-height:1.12;
  font-size:clamp(34px,5.6vw,60px);margin:18px 0 14px;letter-spacing:.005em}
.hero p.lead{font-size:clamp(17px,2vw,21px);max-width:60ch;color:#EFE9DA;margin:0 0 26px}

/* route motif */
.route{display:flex;align-items:center;gap:14px;margin:30px 0 34px;color:var(--gold-soft);
  font-size:14px;letter-spacing:.04em;flex-wrap:wrap}
.route .pt{font-family:var(--serif);font-size:19px;color:var(--paper)}
.route .ln{flex:1;min-width:80px;height:0;border-top:2px dashed var(--gold);opacity:.7;position:relative}
.route .ln::after{content:"⇄";position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--pine);padding:0 8px;color:var(--gold);font-size:16px}

.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;text-decoration:none;font-weight:600;font-size:15.5px;
  padding:13px 22px;border-radius:2px;transition:.15s}
.btn-gold{background:var(--gold);color:var(--ink)}
.btn-gold:hover{background:var(--gold-soft)}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:var(--paper)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-soft)}

/* seal badge */
.seal{width:128px;height:128px;border:2px solid var(--gold);border-radius:50%;
  display:grid;place-items:center;text-align:center;color:var(--gold-soft);
  font-size:12px;line-height:1.3;letter-spacing:.06em;padding:14px;
  box-shadow:inset 0 0 0 4px rgba(200,162,75,.18)}
.seal b{display:block;font-family:var(--serif);font-size:15px;color:var(--paper);margin-bottom:3px}
.hero-grid{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
@media(max-width:760px){.hero-grid{grid-template-columns:1fr}.seal{display:none}}

/* trust strip */
.trust{background:var(--paper-2);border-bottom:1px solid var(--line)}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.trust div{padding:20px 18px;border-right:1px solid var(--line)}
.trust div:last-child{border-right:0}
.trust .k{font-family:var(--serif);font-size:20px;color:var(--ink)}
.trust .v{font-size:13px;color:var(--muted);margin-top:2px}
@media(max-width:760px){.trust .wrap{grid-template-columns:1fr 1fr}
  .trust div:nth-child(2){border-right:0}.trust div{border-bottom:1px solid var(--line)}}

/* sections */
section{padding:62px 0}
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:30px}
.sec-head .no{font-family:var(--serif);color:var(--gold);font-size:15px}
.sec-head h2{font-family:var(--serif);font-size:clamp(26px,3.4vw,36px);margin:0;color:var(--ink)}
.sec-sub{color:var(--muted);max-width:64ch;margin:-16px 0 30px}

/* camp cards */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media(max-width:760px){.cards{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:3px;overflow:hidden;
  display:flex;flex-direction:column}
.card .tag{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--seal);
  padding:18px 22px 0}
.card h3{font-family:var(--serif);font-size:23px;margin:8px 22px 6px;color:var(--ink)}
.card .meta{padding:0 22px;color:var(--muted);font-size:14.5px;flex:1}
.card .price{font-family:var(--serif);font-size:26px;color:var(--ink);padding:14px 22px 0}
.card .price small{font-size:13px;color:var(--muted);font-family:var(--sans)}
.card .foot{padding:18px 22px 22px}
.card a.link{color:var(--ink);font-weight:600;text-decoration:none;border-bottom:2px solid var(--gold);padding-bottom:2px}
.card a.link:hover{color:var(--seal);border-color:var(--seal)}

/* accreditation */
.accred{background:var(--ink);color:var(--paper)}
.accred h2{color:var(--paper)}.accred .no{color:var(--gold)}
.creds{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:760px){.creds{grid-template-columns:1fr}}
.cred{border:1px solid rgba(255,255,255,.18);border-radius:3px;padding:22px}
.cred .t{font-family:var(--serif);color:var(--gold-soft);font-size:18px;margin-bottom:6px}
.cred p{margin:0;color:#D9D3C4;font-size:14.5px}

/* lang blocks */
.lang{border-top:1px solid var(--line)}
.lang h2{font-size:24px}
.lang p{color:var(--muted);max-width:70ch}

/* detail page */
.detail h1{font-family:var(--serif);font-size:clamp(28px,4vw,42px);color:var(--ink);margin:0 0 8px}
.detail .sub{color:var(--muted);margin:0 0 24px}
.factgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);margin:26px 0}
@media(max-width:680px){.factgrid{grid-template-columns:1fr 1fr}}
.factgrid div{background:#fff;padding:16px 18px}
.factgrid .k{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.factgrid .v{font-family:var(--serif);font-size:18px;color:var(--ink);margin-top:3px}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:34px}
@media(max-width:680px){.cols{grid-template-columns:1fr}}
.cols h3{font-family:var(--serif);color:var(--ink);font-size:20px;margin:0 0 10px}
.lst{list-style:none;padding:0;margin:0}
.lst li{padding:8px 0 8px 26px;position:relative;border-bottom:1px solid var(--line);font-size:15.5px}
.lst li::before{content:"";position:absolute;left:4px;top:15px;width:7px;height:7px;
  background:var(--gold);transform:rotate(45deg)}
.lst.no li::before{background:var(--seal)}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:6px 0}
.faq summary{font-family:var(--serif);font-size:18px;color:var(--ink);cursor:pointer;
  padding:14px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--gold);font-weight:700;margin-right:12px}
.faq details[open] summary::before{content:"–"}
.faq p{margin:0 0 16px;color:var(--muted)}

/* footer */
footer{background:var(--pine);color:#CFCBBE;padding:46px 0 30px;font-size:14px}
footer .fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}
@media(max-width:680px){footer .fgrid{grid-template-columns:1fr}}
footer .brand{margin-bottom:10px}
footer a{color:#CFCBBE;text-decoration:none}footer a:hover{color:var(--gold-soft)}
footer .legal{margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  font-size:12.5px;opacity:.7}

.backlink{display:inline-block;margin:26px 0 0;color:var(--ink);text-decoration:none;font-weight:600}
.backlink:hover{color:var(--seal)}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* ---------- language switch (content stays in DOM for crawlers) ---------- */
.l{display:none}
html:not([data-lang]) .l-th{display:revert}
html[data-lang="th"] .l-th{display:revert}
html[data-lang="zh"] .l-zh{display:revert}
html[data-lang="en"] .l-en{display:revert}
.langsw{display:inline-flex;border:1px solid rgba(255,255,255,.35);border-radius:3px;overflow:hidden;margin-left:16px;vertical-align:middle}
.langsw button{background:transparent;border:0;border-left:1px solid rgba(255,255,255,.18);
  color:var(--paper);font:inherit;font-size:12.5px;padding:5px 10px;cursor:pointer;opacity:.7}
.langsw button:first-child{border-left:0}
.langsw button[aria-current="true"]{background:var(--gold);color:var(--ink);opacity:1;font-weight:600}
.langsw button:hover{opacity:1}

/* logo in brand */
.brand{display:inline-flex;align-items:center;gap:9px}
.brand img{width:30px;height:30px;border-radius:50%;display:block;background:#fff}
footer .brand img{width:38px;height:38px}

/* topbar wrap on mobile */
@media(max-width:760px){
  .topbar .wrap{flex-wrap:wrap;height:auto;min-height:46px;padding:8px 22px;gap:8px}
  .topnav{display:flex;flex-wrap:wrap;align-items:center}
  .topnav a{margin-left:0;margin-right:14px}
  .langsw{margin-left:0}
  .lic{width:100%;margin-top:2px}
}

/* ---------- services / cases page ---------- */
.statrow{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:#fff;margin:26px 0}
.statrow div{padding:18px;border-right:1px solid var(--line)}
.statrow div:last-child{border-right:0}
.statrow .k{font-family:var(--serif);color:var(--ink);font-size:18px}
.statrow .v{color:var(--muted);font-size:13px;margin-top:3px}
@media(max-width:760px){.statrow{grid-template-columns:1fr 1fr}.statrow div:nth-child(2){border-right:0}.statrow div{border-bottom:1px solid var(--line)}}
.casefig{aspect-ratio:16/10;background:repeating-linear-gradient(45deg,#efe9da,#efe9da 12px,#f6f1e7 12px,#f6f1e7 24px);display:grid;place-items:center;color:#b3a884;font-size:13px;border-bottom:1px solid var(--line);text-align:center;padding:10px}
.pillar-band{background:var(--paper-2);border:1px solid var(--line);border-radius:3px;padding:20px 24px;margin:16px 0}
.coming{display:inline-block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--seal);border:1px solid var(--seal);border-radius:2px;padding:2px 8px;margin-left:8px;vertical-align:middle}

/* large-scale portfolio grid */
.pfgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px}
@media(max-width:760px){.pfgrid{grid-template-columns:1fr 1fr}}
.pf{border:1px solid var(--line);background:#fff;border-radius:3px;padding:18px}
.pf .n{font-family:var(--serif);font-size:30px;color:var(--ink);line-height:1}
.pf .n small{font-size:13px;color:var(--muted);font-family:var(--sans)}
.pf .y{font-size:12px;letter-spacing:.12em;color:var(--gold);margin:9px 0 4px}
.pf .t{font-size:13px;color:var(--muted);line-height:1.4}

/* large-scale photo gallery */
.gal{display:grid;grid-template-columns:2fr 1fr;grid-template-rows:1fr 1fr;gap:10px;height:380px;margin:16px 0}
.gal .big{grid-row:1 / span 2}
.gal img{width:100%;height:100%;object-fit:cover;border-radius:3px;display:block;border:1px solid var(--line)}
@media(max-width:760px){.gal{height:auto;grid-template-columns:1fr;grid-template-rows:auto}.gal .big{grid-row:auto}.gal img{height:210px}}

.casefig img{width:100%;height:100%;object-fit:cover;display:block}
.casefig.photo{padding:0;background:none}