/* ============================================================
   SOI 404 — Cyberpunk Bangkok design system
   base.css : tokens, type, electric language, global chrome
   ============================================================ */

/* ----- TOKENS ------------------------------------------------ */
:root{
  /* warm near-black world */
  --black:        #07060a;
  --bg:           #09070b;
  --bg-soft:      #0d0a0f;     /* services concrete-dark */
  --bg-panel:     rgba(20,16,12,.55);
  --bg-glass:     rgba(14,11,9,.62);

  /* gold — the electric accent (from the photo + logo) */
  --gold:         #f0b429;
  --gold-bright:  #ffd877;
  --gold-hot:     #ffe9a8;
  --gold-deep:    #a9761a;
  --gold-ember:   #c8901f;

  /* high-voltage spark core */
  --hot:          #fffdf3;
  /* rare cold accent */
  --cyan:         oklch(0.86 0.10 200);

  /* ink */
  --ink:          #efe7d6;
  --ink-soft:     #c9bfad;
  --muted:        #8d8472;
  --faint:        #5c5547;
  --line:         rgba(240,180,41,.16);
  --line-soft:    rgba(240,180,41,.09);

  /* glow */
  --glow-gold:    0 0 24px rgba(240,180,41,.45);
  --glow-soft:    0 0 60px rgba(240,180,41,.18);

  /* type */
  --display: "Archivo Expanded","Archivo",sans-serif;
  --thai:    "IBM Plex Sans Thai","IBM Plex Sans",sans-serif;
  --thai-ui: "Anuphan","IBM Plex Sans Thai",sans-serif;   /* modern Thai for labels/UI */
  --mono:    "Martian Mono",ui-monospace,monospace;
  --body:    "Archivo","IBM Plex Sans Thai",sans-serif;

  --maxw: 1320px;
  --gutter: clamp(20px,5vw,72px);
  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-snap: cubic-bezier(.2,.9,.25,1);
}

/* Thai mode swaps body/display to a Thai face that owns both scripts */
html[lang="th"]{
  --display: "IBM Plex Sans Thai","Archivo Expanded",sans-serif;
  --body:    "IBM Plex Sans Thai",sans-serif;
}

/* ----- RESET ------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto } }
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--body); font-weight:400; line-height:1.55;
  font-size:clamp(16px,1.05vw,18px);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--gold);color:#1a1206}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}

/* ----- ATMOSPHERE: grain + scanlines + circuit bg ----------- */
.atmos{position:fixed;inset:0;z-index:0;pointer-events:none}
.atmos__grain{
  position:absolute;inset:-50%;opacity:.06;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 7s steps(6) infinite;
}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-4%,3%)}40%{transform:translate(3%,-5%)}60%{transform:translate(-3%,4%)}80%{transform:translate(5%,2%)}100%{transform:translate(0,0)}}
.atmos__scan{
  position:absolute;inset:0;opacity:.5;
  background:repeating-linear-gradient(to bottom,transparent 0 2px,rgba(0,0,0,.18) 3px,transparent 4px);
  mix-blend-mode:multiply;
}
.atmos__vign{position:absolute;inset:0;
  background:radial-gradient(120% 90% at 50% 0%,transparent 40%,rgba(0,0,0,.55) 100%);}
/* shared full-screen electric canvas — above content so sparks/current read on top */
#fx-canvas{position:fixed;inset:0;z-index:33;pointer-events:none}

/* ----- LAYOUT PRIMITIVES ------------------------------------ */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{position:relative;z-index:2;padding-block:clamp(80px,12vh,160px)}
main{position:relative;z-index:2}
.eyebrow{font-family:var(--mono);font-size:.66rem;letter-spacing:.34em;
  text-transform:uppercase;color:var(--gold);font-weight:500}
html[lang="th"] .eyebrow{font-family:var(--thai-ui);letter-spacing:.05em;font-size:.86rem;text-transform:none;font-weight:500}

/* ----- TYPE -------------------------------------------------- */
.display{font-family:var(--display);font-weight:800;line-height:.96;
  letter-spacing:-.01em;font-stretch:expanded;text-wrap:balance}
.t-xxl{font-size:clamp(2.8rem,8.4vw,7rem)}
.t-xl {font-size:clamp(2.4rem,6vw,5rem)}
.t-lg {font-size:clamp(1.9rem,4.2vw,3.4rem)}
.gold-ink{color:var(--gold-bright)}
.mono{font-family:var(--mono)}
.soi-num{font-family:var(--mono);font-weight:600;
  color:transparent;-webkit-text-stroke:1.5px rgba(240,180,41,.32)}

/* ----- ELECTRIC LANGUAGE ------------------------------------ */
@property --ang{syntax:"<angle>";inherits:false;initial-value:0deg}

/* live-current border: a bright gold segment travels the perimeter */
.live{position:relative;isolation:isolate}
.live::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:var(--bw,1.5px);
  pointer-events:none;
  background:
    conic-gradient(from var(--ang),
      transparent 0deg 232deg,
      rgba(240,180,41,.5) 268deg,
      var(--gold-bright) 296deg,
      var(--hot) 304deg,
      var(--gold-bright) 312deg,
      rgba(240,180,41,.5) 348deg,
      transparent 360deg);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  animation:current var(--cspeed,5.5s) linear infinite;
  opacity:var(--cop,.85);
}
/* a faint steady ring underneath so the edge always reads */
.live::after{content:"";position:absolute;inset:0;border-radius:inherit;
  box-shadow:inset 0 0 0 1px var(--line);pointer-events:none}
@keyframes current{to{--ang:360deg}}
.live:hover{--cspeed:2.4s;--cop:1}

/* neon flicker-on then idle buzz */
.neon{text-shadow:0 0 18px rgba(240,180,41,.35),0 0 42px rgba(240,180,41,.18)}
.flicker{animation:flickerOn 1.1s var(--ease) both}
.flicker.idle{animation:idleBuzz 6s steps(1) 1.1s infinite}
@keyframes flickerOn{
  0%{opacity:0}8%{opacity:.7}10%{opacity:.1}14%{opacity:.9}
  18%{opacity:.2}24%{opacity:1}28%{opacity:.4}32%{opacity:1}
  40%{opacity:.7}44%{opacity:1}100%{opacity:1}}
@keyframes idleBuzz{0%,97%,100%{opacity:1}98%{opacity:.86}}

/* glitch / chromatic burst — used briefly on reveal */
.glitch[data-text]{position:relative}
.glitch.go::before,.glitch.go::after{
  content:attr(data-text);position:absolute;inset:0;pointer-events:none;
  clip-path:inset(0);}
.glitch.go::before{color:var(--cyan);transform:translate(-2px,0);
  animation:gl1 .5s steps(2) both;mix-blend-mode:screen}
.glitch.go::after{color:#ff5a3c;transform:translate(2px,0);
  animation:gl2 .5s steps(2) both;mix-blend-mode:screen}
@keyframes gl1{0%{clip-path:inset(10% 0 80% 0)}30%{clip-path:inset(60% 0 20% 0)}60%{clip-path:inset(30% 0 50% 0)}100%{opacity:0;clip-path:inset(0 0 100% 0)}}
@keyframes gl2{0%{clip-path:inset(70% 0 10% 0)}30%{clip-path:inset(20% 0 60% 0)}60%{clip-path:inset(50% 0 30% 0)}100%{opacity:0;clip-path:inset(100% 0 0 0)}}

/* scroll-reveal: assemble out of noise */
.rise{opacity:0;transform:translateY(26px);filter:blur(6px);
  transition:opacity .9s var(--ease),transform .9s var(--ease),filter .9s var(--ease)}
.rise.in{opacity:1;transform:none;filter:none}
.rise.d1{transition-delay:.08s}.rise.d2{transition-delay:.16s}
.rise.d3{transition-delay:.24s}.rise.d4{transition-delay:.32s}

/* soi street-sign label */
.soi-sign{display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--gold-bright);padding:.5em .85em;border-radius:3px;
  background:rgba(240,180,41,.05);box-shadow:inset 0 0 0 1px var(--line),0 0 22px rgba(240,180,41,.1)}
.soi-sign::before{content:"";width:6px;height:6px;border-radius:50%;
  background:var(--gold-bright);box-shadow:0 0 10px var(--gold-bright)}
html[lang="th"] .soi-sign{font-family:var(--thai-ui);letter-spacing:.02em;font-size:.86rem;text-transform:none}

/* ----- BUTTONS ----------------------------------------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.7em;padding:.95em 1.5em;border-radius:8px;
  font-family:var(--mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;white-space:nowrap;
  font-weight:500;color:var(--gold-bright);position:relative;isolation:isolate;
  transition:transform .35s var(--ease),color .3s,background .3s}
.btn .ar{transition:transform .35s var(--ease)}
.btn svg{width:1.1em;height:1.1em;flex-shrink:0}
.btn:hover{transform:translateY(-2px)}
.btn:hover .ar{transform:translate(3px,-3px)}
.btn--ghost{--bw:1.5px}
.btn--solid{background:linear-gradient(180deg,var(--gold-bright),var(--gold));
  color:#241804;font-weight:600;box-shadow:0 6px 26px rgba(240,180,41,.28)}
.btn--solid:hover{box-shadow:0 10px 36px rgba(240,180,41,.42)}
.btn--white{background:#fff;color:#15110c;font-weight:600;box-shadow:0 6px 22px rgba(0,0,0,.25)}
.btn--white:hover{background:#fff;box-shadow:0 10px 30px rgba(0,0,0,.32)}
html[lang="th"] .btn{font-family:var(--thai-ui);letter-spacing:.02em;font-size:.86rem}
/* nav CTA: lock width to the English label so Thai never wraps */
.nav__right .btn--ghost{min-width:184px}
html[lang="th"] .nav__right .btn--ghost{font-size:.92rem}

.playlink{display:inline-flex;align-items:center;gap:.8em;color:var(--ink);
  font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase}
.playlink .disc{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;position:relative;flex-shrink:0;
  background:radial-gradient(circle at 50% 36%,rgba(240,180,41,.3),rgba(240,180,41,.05) 58%,rgba(7,6,10,.4));
  box-shadow:inset 0 0 0 1px rgba(240,180,41,.35),0 0 30px rgba(240,180,41,.12);
  transition:transform .4s var(--ease-snap),box-shadow .4s}
/* a bright current segment travels the ring */
.playlink .disc::before{content:"";position:absolute;inset:0;border-radius:50%;padding:2px;pointer-events:none;
  background:conic-gradient(from var(--ang),transparent 0 232deg,rgba(240,180,41,.5) 268deg,var(--gold-bright) 300deg,var(--hot) 308deg,var(--gold-bright) 316deg,rgba(240,180,41,.5) 348deg,transparent 360deg);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;animation:current 4.5s linear infinite}
/* soft pulse halo */
.playlink .disc::after{content:"";position:absolute;inset:0;border-radius:50%;
  box-shadow:0 0 0 0 rgba(240,180,41,.35);animation:playPulse 2.6s var(--ease) infinite}
@keyframes playPulse{0%{box-shadow:0 0 0 0 rgba(240,180,41,.3)}70%,100%{box-shadow:0 0 0 14px rgba(240,180,41,0)}}
.playlink .disc svg{position:relative;width:22px;height:22px;color:var(--gold-bright);margin-left:3px;
  filter:drop-shadow(0 0 6px rgba(240,180,41,.6))}
@keyframes spin{to{transform:rotate(360deg)}}
.playlink:hover .disc{box-shadow:inset 0 0 0 1px var(--gold),0 0 40px rgba(240,180,41,.4);transform:scale(1.07)}
@media (prefers-reduced-motion:reduce){.playlink .disc::before{animation:none;--ang:300deg}.playlink .disc::after{animation:none}}
.playlink u{text-decoration:none;background-image:linear-gradient(var(--gold),var(--gold));
  background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .4s var(--ease)}
.playlink:hover u{background-size:100% 1px}
html[lang="th"] .playlink{font-family:var(--thai);letter-spacing:.02em;font-size:.86rem}

/* ----- NAV --------------------------------------------------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:40;
  padding:8px 0;
  background:linear-gradient(180deg,rgba(8,6,9,.82),rgba(8,6,9,.4));
  backdrop-filter:blur(16px) saturate(1.2);-webkit-backdrop-filter:blur(16px) saturate(1.2);
  transition:padding .4s var(--ease),background .4s}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;
  width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.nav.shrink{padding-block:6px;background:linear-gradient(180deg,rgba(8,6,9,.92),rgba(8,6,9,.7))}
.nav::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line) 12%,var(--line) 88%,transparent);
  overflow:hidden}
.nav__rail{position:absolute;left:0;bottom:0;height:1px;width:34%;
  background:linear-gradient(90deg,transparent,var(--gold-bright),transparent);
  filter:drop-shadow(0 0 6px var(--gold));animation:railRun 7s linear infinite}
@keyframes railRun{0%{transform:translateX(-40%)}100%{transform:translateX(360%)}}
.nav__logo{display:flex;align-items:center;height:130px}
.nav__logo img{height:100%;width:auto}
.nav__links{display:flex;align-items:center;gap:clamp(16px,2.2vw,38px)}
.nav__links a{font-family:var(--mono);font-size:.92rem;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap;
  color:var(--ink-soft);position:relative;padding:6px 0;transition:color .3s}
html[lang="th"] .nav__links a{font-family:var(--thai-ui);letter-spacing:.01em;font-size:1.16rem}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-2px;height:1.5px;width:0;
  background:var(--gold-bright);box-shadow:0 0 8px var(--gold);transition:width .35s var(--ease)}
.nav__links a:hover,.nav__links a[aria-current]{color:var(--gold-bright)}
.nav__links a:hover::after,.nav__links a[aria-current]::after{width:100%}
.nav__right{display:flex;align-items:center;gap:18px}
.lang{display:inline-flex;font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;
  border-radius:6px;overflow:hidden;box-shadow:inset 0 0 0 1px var(--line)}
.lang button{padding:.5em .8em;color:var(--muted);transition:.25s}
.lang button[data-lang="th"]{font-family:var(--thai-ui);font-size:.92rem;letter-spacing:0}
.lang button[aria-pressed="true"]{background:rgba(240,180,41,.14);color:var(--gold-bright)}
.nav__burger{display:none;width:42px;height:42px;border-radius:8px;
  box-shadow:inset 0 0 0 1px var(--line);place-items:center}
.nav__burger span{display:block;width:18px;height:1.5px;background:var(--gold-bright);position:relative}
.nav__burger span::before,.nav__burger span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--gold-bright)}
.nav__burger span::before{top:-5px}.nav__burger span::after{top:5px}

@media (max-width:900px){
  .nav__links,.nav__right .btn{display:none}
  .nav__burger{display:grid}
}

/* mobile drawer */
.drawer{position:fixed;inset:0;z-index:39;background:rgba(7,6,10,.96);
  backdrop-filter:blur(20px);display:flex;flex-direction:column;justify-content:center;gap:8px;
  padding:var(--gutter);transform:translateY(-100%);transition:transform .5s var(--ease);pointer-events:none}
.drawer.open{transform:none;pointer-events:auto}
.drawer a{font-family:var(--display);font-weight:800;font-size:2.4rem;color:var(--ink);
  padding:.18em 0;border-bottom:1px solid var(--line-soft)}
html[lang="th"] .drawer a{font-family:var(--thai)}
.drawer a:active{color:var(--gold-bright)}
.drawer .drawer__meta{margin-top:24px;display:flex;gap:14px}

/* ----- FLOATING CONTACT STACK ------------------------------- */
.fab{position:fixed;right:22px;bottom:22px;z-index:38;display:flex;flex-direction:column;gap:14px}
.fab__btn{width:58px;height:58px;border-radius:15px;display:grid;place-items:center;
  background:var(--bg-glass);backdrop-filter:blur(8px);position:relative;isolation:isolate;
  box-shadow:0 8px 30px rgba(0,0,0,.5),inset 0 0 0 1px rgba(240,180,41,.1);
  transition:transform .35s var(--ease-snap),box-shadow .35s}
.fab__btn::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.4px;
  background:conic-gradient(from var(--ang),transparent 0 250deg,var(--gold-bright) 300deg,var(--hot) 312deg,var(--gold-bright) 324deg,transparent 360deg);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;animation:current 4s linear infinite}
.fab__btn svg{width:24px;height:24px;color:var(--gold-bright);filter:drop-shadow(0 0 6px rgba(240,180,41,.4))}
.fab__btn:nth-child(2)::before{animation-delay:-1.3s}
.fab__btn:nth-child(3)::before{animation-delay:-2.6s}
.fab__btn:hover{transform:scale(1.09);box-shadow:0 12px 40px rgba(240,180,41,.3),inset 0 0 0 1px rgba(240,180,41,.3)}
.fab__btn .tip{position:absolute;right:calc(100% + 14px);top:50%;transform:translateY(-50%) translateX(6px);
  white-space:nowrap;font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--gold-bright);background:var(--bg-glass);padding:.5em .8em;border-radius:6px;
  box-shadow:inset 0 0 0 1px var(--line);opacity:0;pointer-events:none;transition:.3s}
html[lang="th"] .fab__btn .tip{font-family:var(--thai-ui);font-size:.86rem;letter-spacing:0;text-transform:none}
.fab__btn:hover .tip{opacity:1;transform:translateY(-50%) translateX(0)}
@media (max-width:560px){
  .fab{right:50%;bottom:16px;transform:translateX(50%);flex-direction:row}
  .fab__btn{width:52px;height:52px}
  .fab__btn .tip{display:none}
}

/* ----- PAGE SPINE (charges with scroll) --------------------- */
.spine{position:fixed;left:max(14px,2.4vw);top:0;bottom:0;width:2px;z-index:30;pointer-events:none}
.spine__track{position:absolute;inset:0;background:linear-gradient(var(--line-soft),var(--line-soft))}
.spine__fill{position:absolute;left:0;top:0;width:100%;height:var(--charge,0%);
  background:linear-gradient(180deg,var(--gold-bright),var(--gold));
  box-shadow:0 0 12px var(--gold),0 0 28px rgba(240,180,41,.4)}
.spine__node{position:absolute;left:50%;transform:translate(-50%,-50%);width:8px;height:8px;border-radius:50%;
  background:var(--bg);box-shadow:inset 0 0 0 1.5px var(--line);transition:.4s}
.spine__node.lit{background:var(--gold-bright);box-shadow:0 0 14px var(--gold),0 0 30px rgba(240,180,41,.5)}
@media (max-width:900px){.spine{display:none}}

/* ----- FOOTER ------------------------------------------------ */
.foot{position:relative;z-index:2;padding:clamp(56px,8vh,90px) 0 40px;
  border-top:1px solid var(--line-soft)}
.foot::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;overflow:hidden;
  background:linear-gradient(90deg,transparent,var(--line),transparent)}
.foot__rail{position:absolute;top:0;height:1px;width:18%;
  background:linear-gradient(90deg,transparent,var(--gold-bright),transparent);
  filter:drop-shadow(0 0 6px var(--gold));animation:railRun 11s linear infinite}
.foot__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.foot__brand img{height:118px;margin-bottom:18px}
.foot__tag{color:var(--muted);max-width:32ch}
.foot h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--faint);margin-bottom:16px}
html[lang="th"] .foot h4{font-family:var(--thai-ui);font-size:1rem;letter-spacing:.03em;text-transform:none}
.foot__col a{display:block;color:var(--ink-soft);padding:5px 0;transition:color .25s,padding-left .25s}
.foot__col a:hover{color:var(--gold-bright);padding-left:6px}
.foot__bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-soft);
  font-family:var(--mono);font-size:.66rem;letter-spacing:.08em;color:var(--faint)}
html[lang="th"] .foot__bot{font-family:var(--thai-ui);letter-spacing:0;font-size:.82rem}
html[lang="th"] .foot__tag{font-family:var(--thai-ui)}
@media (max-width:760px){.foot__grid{grid-template-columns:1fr 1fr}.foot__brand{grid-column:1/-1}}

/* reduced motion: freeze the electricity, keep a static glow */
@media (prefers-reduced-motion: reduce){
  .atmos__grain,.nav__rail,.foot__rail,.flicker,.flicker.idle{animation:none!important}
  .live::before,.fab__btn::before{animation:none!important;--ang:300deg}
  .rise{transition-duration:.4s}
}