/* siamspaces.com — owner-direct property across Thailand (residential + commercial).
   Design system: "The Thailand Space Registry." Cormorant / Jost / JetBrains Mono.
   Palette: Thai celadon + brass on warm architectural paper, deep jade-night for dark bands.
   Signature: a monospace parcel/coordinate registry + a hero blueprint grid.
   Portable: no hardcoded self-domain in chrome; root-relative assets only. */

:root{
  --night:#0a1613; --night-2:#0e1f1a;
  --ink:#13231d; --ink-soft:#39493f; --mute:#77867b;
  --paper:#f3eee2; --paper-2:#ece4d3; --card:#fbf7ed;
  --celadon:#79a596; --celadon-mid:#3f7d69; --celadon-deep:#16463a; --jade-deep:#0d3a30;
  --brass:#b0842f; --brass-soft:#e4c987; --brass-deep:#7f5f1f;
  --line:rgba(19,35,29,.14); --line-2:rgba(19,35,29,.07);
  --line-dk:rgba(228,201,135,.16); --line-dk-2:rgba(228,201,135,.08);
  --shadow:0 1px 2px rgba(16,31,26,.05), 0 20px 50px -26px rgba(16,31,26,.32);
  --shadow-lg:0 40px 100px -44px rgba(10,58,48,.55);
  --maxw:1180px; --r:14px; --r-sm:8px;
  --disp:"Cormorant Garamond",Georgia,serif;
  --body:"Jost",-apple-system,Segoe UI,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--celadon-mid);color:#fff}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(18px,4vw,44px)}

/* ---- type ---- */
h1,h2,h3{font-family:var(--disp);font-weight:600;line-height:1.04;letter-spacing:-.012em;color:var(--jade-deep)}
h1{font-size:clamp(2.7rem,7vw,5.4rem)}
h2{font-size:clamp(2rem,4.4vw,3.5rem)}
h3{font-size:1.32rem;letter-spacing:-.005em}
.disp-it{font-style:italic;font-weight:500}
p{font-size:1.02rem}
.lead{font-size:clamp(1.08rem,1.7vw,1.32rem);font-weight:300;color:var(--ink-soft);line-height:1.6}

/* eyebrow + registry tag (the signature mono voice) */
.eyebrow{font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.24em;text-transform:uppercase;color:var(--celadon-mid);display:inline-flex;align-items:center;gap:.7em}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--brass);display:inline-block}
.eyebrow.solo::before{display:none}
.reg{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.reg b{color:var(--brass-deep);font-weight:600}

/* ---- buttons ---- */
.btn{--bg:var(--jade-deep);--fg:#fff;--bd:var(--jade-deep);display:inline-flex;align-items:center;gap:.6em;font-family:var(--body);font-weight:500;font-size:.92rem;letter-spacing:.02em;padding:.82em 1.5em;border:1px solid var(--bd);border-radius:100px;background:var(--bg);color:var(--fg);cursor:pointer;transition:transform .25s cubic-bezier(.2,.7,.3,1),background .25s,color .25s,border-color .25s,box-shadow .25s;will-change:transform}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(13,58,48,.5)}
.btn .ar{transition:transform .28s cubic-bezier(.2,.7,.3,1)}
.btn:hover .ar{transform:translateX(4px)}
.btn-brass{--bg:linear-gradient(180deg,#e7cf95,#c99f4a);--fg:#2a2008;--bd:transparent}
.btn-ghost{--bg:transparent;--fg:var(--jade-deep);--bd:var(--line)}
.btn-ghost:hover{--bd:var(--celadon-mid);--fg:var(--celadon-deep)}
.btn-on-dark{--bg:transparent;--fg:#f2ece0;--bd:var(--line-dk)}
.btn-on-dark:hover{--bd:var(--brass-soft);--fg:#fff}
.btn-lg{padding:1em 1.8em;font-size:1rem}
.btn-sm{padding:.62em 1.1em;font-size:.82rem}
:focus-visible{outline:2px solid var(--celadon-mid);outline-offset:3px;border-radius:4px}

/* ---- announcement ---- */
.ann{background:var(--night);color:#d9cfb6;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-align:center;padding:9px 16px;border-bottom:1px solid var(--line-dk-2)}
.ann b{color:var(--brass-soft);font-weight:600}

/* ---- nav ---- */
.nav{position:sticky;top:0;z-index:60;background:rgba(243,238,226,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav .in{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{font-family:var(--disp);font-size:1.5rem;font-weight:700;color:var(--jade-deep);letter-spacing:-.01em;display:flex;align-items:baseline;gap:.12em}
.brand i{font-style:normal;color:var(--celadon-mid)}
.brand small{font-family:var(--mono);font-size:.56rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--mute);margin-left:.6em;align-self:center}
.nav-links{display:flex;align-items:center;gap:clamp(14px,2.2vw,30px)}
.nav-links a:not(.btn){font-size:.9rem;color:var(--ink-soft);position:relative;padding:4px 0;transition:color .2s}
.nav-links a:not(.btn)::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--celadon-mid);transition:width .28s cubic-bezier(.2,.7,.3,1)}
.nav-links a:not(.btn):hover{color:var(--jade-deep)}
.nav-links a:not(.btn):hover::after{width:100%}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.burger span{width:24px;height:2px;background:var(--jade-deep);transition:.3s}
.nav.open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .burger span:nth-child(2){opacity:0}
.nav.open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---- hero ---- */
.hero{position:relative;background:radial-gradient(120% 90% at 78% 8%,#123128 0%,var(--night-2) 42%,var(--night) 100%);color:#f2ece0;overflow:hidden;padding:clamp(70px,12vh,140px) 0 clamp(48px,7vh,80px)}
.hero .wrap{position:relative;z-index:2}
/* blueprint grid signature */
.hero .grid{position:absolute;inset:0;z-index:1;
  background-image:
    linear-gradient(var(--line-dk-2) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-dk-2) 1px,transparent 1px),
    linear-gradient(var(--line-dk) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-dk) 1px,transparent 1px);
  background-size:28px 28px,28px 28px,140px 140px,140px 140px;
  mask-image:radial-gradient(130% 100% at 75% 0,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(130% 100% at 75% 0,#000 30%,transparent 78%)}
.hero .plot{position:absolute;z-index:1;border:1px solid var(--line-dk);border-radius:2px;color:var(--brass-soft);font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;padding:5px 8px;opacity:.5}
.hero .plot.p1{top:16%;right:9%}.hero .plot.p2{top:40%;right:20%}
.hero-eyebrow{color:var(--brass-soft)}
.hero-eyebrow::before{background:var(--brass-soft)}
.hero h1{color:#fbf7ee;max-width:16ch;margin:20px 0 20px;text-shadow:0 2px 40px rgba(0,0,0,.35)}
.hero h1 .em{font-style:italic;color:var(--brass-soft)}
.hero-sub{max-width:52ch;font-size:clamp(1.05rem,1.7vw,1.28rem);font-weight:300;color:#d7cfbe}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
/* hero registry strip */
.hero-strip{position:relative;z-index:2;margin-top:clamp(46px,7vh,86px);border-top:1px solid var(--line-dk);padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 30px}
.hero-strip .h{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;color:#b9c8bf}
.hero-strip .h b{color:var(--brass-soft);font-weight:600}
.hero-strip .h span{color:var(--celadon)}

/* ---- section shells ---- */
.sec{padding:clamp(64px,10vh,120px) 0}
.sec.band{background:var(--paper-2)}
.sec.dark{background:var(--night);color:#eadfca}
.sec.dark h2{color:#fbf7ee}
.sec-head{max-width:60ch}
.sec-head .eyebrow{margin-bottom:16px}
.sec-head h2{margin-bottom:14px}
.sec-head.spread{max-width:none;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}

/* ---- the arithmetic band ---- */
.arith{display:grid;grid-template-columns:1.3fr 1fr;gap:clamp(30px,6vw,80px);align-items:center}
.arith .big{font-family:var(--disp);font-weight:600;font-size:clamp(5rem,15vw,11rem);line-height:.86;color:var(--brass-soft);letter-spacing:-.02em}
.arith .big small{display:block;font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--celadon);margin-top:14px;font-weight:500}
.arith .stats{display:grid;gap:0;border-top:1px solid var(--line-dk)}
.arith .stat{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:15px 0;border-bottom:1px solid var(--line-dk-2)}
.arith .stat b{font-family:var(--disp);font-size:1.7rem;color:#fbf7ee;font-weight:600}
.arith .stat span{font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:#a9b8ae;text-align:right;max-width:20ch}

/* ---- register of spaces (the index, not a card grid) ---- */
.register{margin-top:clamp(30px,5vh,52px);border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:66px 1.4fr 1.1fr auto;gap:clamp(14px,3vw,40px);align-items:center;padding:clamp(20px,3vh,30px) 8px;border-bottom:1px solid var(--line);position:relative;transition:background .3s,padding-left .3s}
.row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:0;background:var(--celadon-mid);transition:width .3s}
.row:hover{background:var(--card);padding-left:20px}
.row:hover::before{width:3px}
.row .no{font-family:var(--mono);font-size:.82rem;letter-spacing:.06em;color:var(--brass-deep);font-weight:600}
.row .nm h3{margin-bottom:5px}
.row .nm .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--celadon-mid)}
.row .ds{color:var(--ink-soft);font-size:.96rem;font-weight:300}
.row .go{justify-self:end;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--celadon-deep);transition:.28s;flex:none}
.row:hover .go{background:var(--jade-deep);color:#fff;border-color:var(--jade-deep);transform:translateX(4px)}

/* ---- regions ---- */
.regions{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:clamp(30px,5vh,50px);background:var(--line);border:1px solid var(--line)}
.region{background:var(--paper);padding:clamp(22px,3vw,32px) clamp(18px,2vw,26px);transition:background .3s;min-height:210px;display:flex;flex-direction:column}
.region:hover{background:var(--card)}
.region .co{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;color:var(--brass-deep)}
.region h3{margin:12px 0 8px;font-size:1.5rem}
.region p{font-size:.92rem;color:var(--ink-soft);font-weight:300;line-height:1.5}
.region .tag{margin-top:auto;font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--celadon-mid);padding-top:14px}

/* ---- steps ---- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2.4vw,30px);margin-top:clamp(30px,5vh,50px);counter-reset:st}
.step{position:relative;padding-top:26px;border-top:2px solid var(--line-dk)}
.step::before{counter-increment:st;content:counter(st,decimal-leading-zero);position:absolute;top:-1px;left:0;transform:translateY(-100%);font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;color:var(--brass-soft);padding-bottom:8px}
.step h3{color:#fbf7ee;font-size:1.3rem;margin-bottom:8px}
.step p{color:#b9c8bf;font-size:.94rem;font-weight:300}

/* ---- owners ---- */
.owners{display:grid;grid-template-columns:1.5fr 1fr;gap:clamp(28px,5vw,64px);align-items:center;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--brass);border-radius:var(--r);padding:clamp(30px,5vw,58px);box-shadow:var(--shadow)}
.owners .n{text-align:center;padding-left:clamp(0px,3vw,30px);border-left:1px solid var(--line)}
.owners .n .big{font-family:var(--disp);font-size:clamp(3.4rem,7vw,5rem);font-weight:600;color:var(--celadon-deep);line-height:1}
.owners .n .big small{display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--mute);margin-top:8px}

/* ---- final cta ---- */
.cta{position:relative;background:radial-gradient(110% 120% at 20% 0,#12362b,var(--night) 60%);color:#f2ece0;border-radius:var(--r);padding:clamp(48px,8vw,96px) clamp(28px,6vw,80px);text-align:center;overflow:hidden}
.cta .grid{position:absolute;inset:0;background-image:linear-gradient(var(--line-dk-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-dk-2) 1px,transparent 1px);background-size:34px 34px;mask-image:radial-gradient(80% 100% at 50% 0,#000,transparent 70%);-webkit-mask-image:radial-gradient(80% 100% at 50% 0,#000,transparent 70%)}
.cta>*{position:relative;z-index:2}
.cta h2{color:#fbf7ee;margin:12px 0 14px}
.cta p{max-width:48ch;margin:0 auto;color:#d7cfbe;font-weight:300;font-size:1.1rem}
.cta .btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:30px}

/* ---- footer ---- */
.ft{background:var(--night);color:#c8bfa8;padding:clamp(48px,7vh,76px) 0 30px;border-top:1px solid var(--line-dk-2)}
.ft .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:clamp(24px,4vw,50px)}
.ft .brand{color:#fbf7ee}.ft .brand i{color:var(--celadon)}.ft .brand small{color:#8b9a8f}
.ft p{margin-top:14px;max-width:34ch;font-size:.9rem;font-weight:300;color:#a9b0a4}
.ft h4{font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--brass-soft);margin-bottom:14px;font-weight:600}
.ft .cols a{display:block;font-size:.9rem;color:#c8bfa8;padding:5px 0;transition:color .2s}
.ft .cols a:hover{color:#fbf7ee}
.ft .bar{margin-top:clamp(30px,5vh,50px);padding-top:22px;border-top:1px solid var(--line-dk-2);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;color:#8b9a8f}

/* ---- reveal animation ---- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.7,.3,1),transform .8s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}
.hero .rv{transition-duration:1s}

/* ---- responsive ---- */
@media(max-width:900px){
  .arith{grid-template-columns:1fr;gap:36px}
  .regions{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:34px 24px}
  .owners{grid-template-columns:1fr;gap:26px}
  .owners .n{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:24px}
  .ft .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav-links{position:fixed;inset:0 0 0 auto;width:min(80vw,320px);flex-direction:column;align-items:flex-start;justify-content:center;gap:22px;background:var(--paper);padding:40px;transform:translateX(100%);transition:transform .38s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-lg)}
  .nav.open .nav-links{transform:none}
  .burger{display:flex;z-index:70}
  .row{grid-template-columns:44px 1fr auto;gap:12px 16px}
  .row .ds{grid-column:2/4;font-size:.9rem}
  .row .go{display:none}
  .regions{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .ft .cols{grid-template-columns:1fr}
  .hero-strip{gap:6px 18px}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .rv{opacity:1;transform:none;transition:none}
  .btn:hover{transform:none}
}