/* Profolio
   Structure: single-page portfolio + case study pages.
   CI: taken from sooudesign.com. Monochrome black on white, Instrument Sans,
   tight negative tracking, lowercase headings, square corners, 1px full-width rules,
   grey meta text, and a giant light-grey wordmark in the footer. */
:root {
  --bg: #FFFFFF;
  --ink: #000000;
  --muted: #767676;      /* meta text, labels, "see project" links */
  --line: #E6E6E6;       /* light dividers */
  --rule: #000000;       /* full-width section rules */
  --panel: #F5F5F5;      /* subtle fill for boxes */
  --ph: #EDEDED;         /* image placeholder fill */
  --ph-ink: #9C9C9C;
  --watermark: #E7E7E7;  /* giant footer wordmark */
  --on-ink: #FFFFFF;

  --f-sans: "Instrument Sans", "Google Sans", "Helvetica Neue", Arial, system-ui, sans-serif;

  --track-display: -0.05em;  /* 64px hero = -3.2px */
  --track-title: -0.03em;    /* 22px titles = -0.66px */
  --track-body: -0.04em;     /* 16px body = -0.64px */

  --radius: 0px;
  --container: 1440px;
  --gutter: 24px;
  --narrow: 800px;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.6 var(--f-sans); letter-spacing: -0.01em; -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4, h5 { font-family: var(--f-sans); margin: 0; font-weight: 400; line-height: 1.1; letter-spacing: var(--track-title); text-wrap: balance; }
p { margin: 0; }
a { color: inherit; }
img { max-width: 100%; display: block; }
:focus-visible { outline: 1px solid var(--ink); outline-offset: 4px; }

.container { max-width: var(--container); margin-inline: auto; padding-left: max(var(--gutter), env(safe-area-inset-left, 0px)); padding-right: max(var(--gutter), env(safe-area-inset-right, 0px)); }
.narrow { max-width: var(--narrow); margin-inline: auto; }
.eyebrow { font-size: 14px; font-weight: 500; letter-spacing: 0; text-transform: uppercase; color: var(--muted); }
.section { padding-block: 40px 96px; }
.section-title { font-size: clamp(36px, 3.4vw, 48px); letter-spacing: var(--track-display); text-transform: lowercase; padding-top: 24px; margin-bottom: 40px; border-top: 1px solid var(--rule); }

/* Placeholder box: stands in for any image until real content arrives */
.ph { background: var(--ph); border-radius: var(--radius); display: grid; place-items: center; color: var(--ph-ink); font-size: 13px; font-weight: 500; text-align: center; padding: 16px; position: relative; overflow: hidden; }
.ph::before { content: ""; position: absolute; inset: 0; background:
  linear-gradient(to top right, transparent calc(50% - .5px), #DCDCDC 50%, transparent calc(50% + .5px)),
  linear-gradient(to top left, transparent calc(50% - .5px), #DCDCDC 50%, transparent calc(50% + .5px)); }
.ph span { position: relative; background: var(--ph); padding: 4px 10px; }
.ratio-16-10 { aspect-ratio: 16 / 10; }
.ratio-16-9 { aspect-ratio: 16 / 9; }
.ratio-4-3 { aspect-ratio: 4 / 3; }
.ratio-1-1 { aspect-ratio: 1 / 1; }
.ratio-3-4 { aspect-ratio: 3 / 4; }
.ratio-9-19 { aspect-ratio: 9 / 19; }
.lines { display: grid; gap: 10px; }
.lines i { display: block; height: 10px; background: var(--ph); }

/* Brand object: a metallic ring, stand-in until the real 3D asset is added */
.ring { display: block; width: 64px; height: 64px; border-radius: 50%; flex: none;
  background: conic-gradient(from 200deg, #111, #EEE 18%, #555 32%, #FFF 46%, #222 62%, #CCC 78%, #111);
  -webkit-mask: radial-gradient(circle, transparent 54%, #000 56%, #000 68%, transparent 70%);
          mask: radial-gradient(circle, transparent 54%, #000 56%, #000 68%, transparent 70%);
  transform: rotate(-18deg) scaleY(.9); }
.ring-lg { width: 128px; height: 128px; }

/* Buttons and links */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; height: 48px; padding: 0 22px; border-radius: var(--radius); border: 1px solid var(--ink); background: var(--ink); color: var(--on-ink); font-weight: 500; font-size: 16px; letter-spacing: -0.02em; text-decoration: none; cursor: pointer; transition: background-color .2s ease, color .2s ease; }
.btn:hover { background: var(--bg); color: var(--ink); }
.btn-outline { background: transparent; color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--on-ink); }
.text-link { display: inline-flex; gap: 6px; align-items: center; font-size: 16px; font-weight: 500; color: var(--muted); text-decoration: none; }
.text-link:hover, a:hover .text-link { color: var(--ink); }

/* Nav */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: var(--bg); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--bg); }
.nav-bar { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 72px; }
.brand { font-size: 24px; font-weight: 600; letter-spacing: -0.04em; text-transform: lowercase; text-decoration: none; }
.brand-mark { display: none; }
.nav-links { display: flex; gap: 40px; list-style: none; margin: 0; padding: 0; }
.nav-links a { font-size: 20px; letter-spacing: -0.05em; text-transform: lowercase; text-decoration: none; text-underline-offset: 5px; text-decoration-thickness: 1px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { text-decoration: underline; }
.menu-btn { display: none; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; padding: 0; }
.menu-btn span { display: block; width: 22px; height: 1.5px; background: var(--ink); margin: 6px auto; transition: transform .2s ease; }

/* Home hero */
.hero { padding-block: 32px 56px; display: grid; gap: 28px; justify-items: start; }
.hero h1 { font-size: clamp(44px, 6.2vw, 88px); letter-spacing: var(--track-display); line-height: 1.02; display: flex; flex-wrap: wrap; align-items: center; gap: 0 .22em; }
.hero-avatar { width: 1em; height: 1em; font-size: inherit; padding: 0; border-radius: 50%; object-fit: cover; }
.hero-avatar span { font-size: 11px; letter-spacing: 0; }
.hero p { max-width: 640px; font-size: clamp(20px, 1.8vw, 26px); letter-spacing: var(--track-title); line-height: 1.35; color: var(--muted); }
.scroll-down { display: inline-flex; gap: 8px; align-items: center; color: var(--muted); font-weight: 500; text-decoration: none; }
.scroll-down:hover { color: var(--ink); }

/* Case study grid */
.work-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 64px 24px; }
.work-card { display: grid; gap: 10px; align-content: start; text-decoration: none; }
.work-card .ph { margin-bottom: 8px; transition: opacity .25s ease; }
.work-card:hover .ph { opacity: .85; }
.work-card h3 { font-size: 22px; font-weight: 600; letter-spacing: var(--track-title); }
.work-card .eyebrow { order: 2; text-transform: none; font-size: 16px; }
.work-card .ph { order: 0; }
.work-card h3 { order: 1; }
.work-card .summary { order: 3; max-width: 46ch; letter-spacing: var(--track-body); }
.work-card .text-link { order: 4; margin-top: 4px; }
.work-card.is-featured { grid-column: 1 / -1; }
.work-card.is-featured h3 { font-size: clamp(28px, 2.6vw, 36px); }
.work-card.is-soon { cursor: default; }
.work-card.is-soon .ph { opacity: .55; }
.badge { display: inline-block; font-size: 13px; font-weight: 500; letter-spacing: 0; padding: 3px 8px; border: 1px solid var(--ink); vertical-align: middle; margin-left: 8px; }

/* About */
.about { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 64px; align-items: start; }
.about-text { display: grid; gap: 20px; font-size: 20px; line-height: 1.5; letter-spacing: var(--track-body); }
.about-text > p:not(:first-child) { color: var(--muted); }
.about-facts { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 24px; margin-top: 16px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 16px; }
.about-facts h3 { font-size: 16px; font-weight: 400; letter-spacing: 0; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.about-facts ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.bullets { margin: 0; padding-left: 1.1em; display: grid; gap: 6px; letter-spacing: var(--track-body); }
.bullets b { font-weight: 600; }

/* Connect */
.connect { border-top: 1px solid var(--rule); padding-block: 64px 96px; display: grid; justify-items: start; gap: 24px; }
.connect h2 { font-size: clamp(48px, 7vw, 104px); letter-spacing: var(--track-display); line-height: 1; text-transform: lowercase; }
.connect-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.connect-email { font-size: clamp(22px, 2.4vw, 32px); letter-spacing: var(--track-title); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; }
.connect-email:hover { color: var(--muted); }

/* Footer: contact columns + giant wordmark */
.footer { border-top: 1px solid var(--rule); padding-top: 48px; overflow: hidden; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 200px; gap: 40px; }
.footer-col { display: grid; gap: 6px; align-content: start; font-size: 16px; letter-spacing: var(--track-body); }
.footer-col h4 { font-size: 16px; font-weight: 400; letter-spacing: 0; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.footer-col + .footer-col h4 + * { margin-top: 0; }
.footer-col a { text-underline-offset: 4px; text-decoration-thickness: 1px; }
.footer-col a:hover { color: var(--muted); }
.footer-group { display: grid; gap: 6px; }
.footer-group + .footer-group { margin-top: 20px; }
.wordmark { font-size: min(calc((100vw - 2 * var(--gutter)) / 3.1), 450px); /* "profolio" is ~3.06em wide: fills the row */ font-weight: 400; letter-spacing: -0.06em; line-height: .8; color: var(--watermark); text-transform: lowercase; white-space: nowrap; margin: 64px 0 0 -0.04em; user-select: none; }
.copyright { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 20px 28px; font-size: 14px; color: var(--muted); letter-spacing: 0; }

/* Case study page */
.cs-hero { padding-block: 32px 0; }
.cs-hero-inner { display: grid; gap: 24px; }
.cs-hero h1 { font-size: clamp(40px, 5vw, 72px); letter-spacing: var(--track-display); line-height: 1.02; max-width: 20ch; }
.cs-meta { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; padding-block: 20px; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--line); margin: 8px 0 0; }
.cs-meta dt { font-size: 14px; font-weight: 500; text-transform: uppercase; color: var(--muted); }
.cs-meta dd { margin: 4px 0 0; font-size: 18px; letter-spacing: var(--track-title); }
.cs-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cs-cover { margin-top: 48px; }

.cs-section { padding-block: 64px; border-bottom: 1px solid var(--line); }
.cs-section:last-of-type { border-bottom: 0; }
.cs-head { display: grid; gap: 14px; margin-bottom: 32px; }
.cs-head h2 { font-size: clamp(30px, 3.2vw, 44px); letter-spacing: var(--track-display); }
.cs-head p { color: var(--muted); font-size: 18px; letter-spacing: var(--track-body); }
.cs-body { display: grid; gap: 28px; }
.cs-body h3 { font-size: 22px; font-weight: 600; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.box { background: var(--panel); border-radius: var(--radius); padding: 28px; display: grid; gap: 14px; align-content: start; }
.box h3, .box h4 { font-size: 20px; font-weight: 600; letter-spacing: var(--track-title); }
.swot { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.swot .box { background: var(--bg); }
.quote { font-size: clamp(24px, 2.6vw, 32px); letter-spacing: var(--track-title); line-height: 1.3; padding-left: 24px; border-left: 1px solid var(--ink); margin: 0; }
.quote cite { display: block; margin-top: 12px; font-size: 16px; font-weight: 500; font-style: normal; color: var(--muted); letter-spacing: 0; }
.persona { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 32px; align-items: start; }
.hmw { display: grid; gap: 0; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.hmw li { list-style: none; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 20px; letter-spacing: var(--track-title); }
.screens { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; background: var(--panel); padding: 48px; }
.screens .ph { background: var(--bg); border-radius: 18px; }
.screens .ph span { background: var(--bg); }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.stat { border-top: 1px solid var(--ink); padding-top: 20px; }
.stat strong { display: block; font-size: 56px; font-weight: 400; letter-spacing: var(--track-display); line-height: 1; margin-bottom: 10px; }
.stat span { color: var(--muted); }

/* Testing & iterations tabs */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.tab { height: 40px; min-width: 40px; padding: 0 14px; border-radius: var(--radius); border: 1px solid var(--ink); background: var(--bg); font: inherit; font-weight: 500; font-size: 15px; cursor: pointer; }
.tab[aria-selected="true"] { background: var(--ink); color: var(--on-ink); }
.tab-panel { display: grid; gap: 20px; }
.before-after { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.before-after figure { margin: 0; display: grid; gap: 10px; }
.before-after figcaption { font-size: 14px; font-weight: 500; text-transform: uppercase; color: var(--muted); }

/* Next project */
.next-project { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: end; text-decoration: none; border-top: 1px solid var(--rule); padding-top: 24px; }
.next-project h2 { font-size: clamp(36px, 4vw, 56px); letter-spacing: var(--track-display); margin-top: 8px; }
.next-project .ph { transition: opacity .25s ease; }
.next-project:hover .ph { opacity: .85; }

/* Resume page */
.resume { display: grid; gap: 40px; }
.resume-row { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 32px; padding-top: 24px; border-top: 1px solid var(--rule); }
.resume-row h2 { font-size: 16px; font-weight: 400; letter-spacing: 0; text-transform: uppercase; color: var(--muted); }
.resume-item { display: grid; gap: 8px; padding-bottom: 24px; }
.resume-item h3 { font-size: 22px; font-weight: 600; }
.resume-item .when { color: var(--muted); }

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

/* Tablet */
@media (max-width: 960px) {
  .about { grid-template-columns: minmax(0, 1fr); }
  .about .ph { max-width: 300px; order: -1; }
  .cs-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .screens { grid-template-columns: repeat(3, minmax(0, 1fr)); padding: 24px; }
  .three-col, .stats { grid-template-columns: minmax(0, 1fr); }
  .next-project { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

/* Phone */
@media (max-width: 720px) {
  :root { --gutter: 16px; }
  .section { padding-block: 32px 72px; }
  .menu-btn { display: block; }
  .nav .container { position: relative; }
  .nav-links { display: none; position: absolute; left: 0; right: 0; top: 72px; flex-direction: column; gap: 0; background: var(--bg); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 8px max(var(--gutter), env(safe-area-inset-left, 0px)); }
  .nav.is-open .nav-links { display: flex; }
  .nav.is-open .menu-btn span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .nav.is-open .menu-btn span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .nav-links a { display: block; padding: 12px 0; font-size: 28px; }
  .work-grid, .two-col, .before-after, .swot, .persona { grid-template-columns: minmax(0, 1fr); }
  .work-grid { gap: 48px; }
  .screens { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .resume-row { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
}

/* Resume content */
.cs-lede { color: var(--muted); font-size: clamp(18px, 1.6vw, 22px); letter-spacing: var(--track-title); line-height: 1.4; max-width: 40em; }
.resume-item a { text-underline-offset: 3px; text-decoration-thickness: 1px; }
.resume-item a:hover { color: var(--muted); }
.resume-item .when + .bullets { margin-bottom: 8px; }
.cs-name { font-size: 22px; font-weight: 600; letter-spacing: var(--track-title); margin-top: -12px; }
.about-text { max-width: 760px; }
.cs-meta > div { min-width: 0; }
.cs-meta dd { overflow-wrap: anywhere; }
.cs-head p b { color: var(--ink); font-weight: 600; }
.cs-head .bullets { color: var(--muted); font-size: 18px; }

/* Real images (replace .ph placeholders) */
.shot { display: block; width: 100%; height: auto; max-width: 100%; background: var(--panel); }
.shot.fit-cover { object-fit: cover; }
.shot.fit-contain { object-fit: contain; }
.screens-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.screens-3 .shot { border-radius: 18px; background: transparent; }
.work-card .shot { margin-bottom: 8px; transition: opacity .25s ease; }
.work-card:hover .shot, .next-project:hover .shot { opacity: .85; }
@media (max-width: 720px) { .screens-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; padding: 16px; } }

/* Brand name, language switch and icons */
.brand { text-transform: none; font-size: 18px; font-weight: 600; letter-spacing: 0.02em; }
.nav-bar { gap: 32px; }
.nav-links { margin-left: auto; }
.lang-switch { display: inline-flex; align-items: center; gap: 4px; font-size: 15px; color: var(--muted); }
.lang-switch .ic { margin-right: 4px; }
.lang-switch button { border: 0; background: none; padding: 4px 2px; font: inherit; font-weight: 500; color: var(--muted); cursor: pointer; text-underline-offset: 5px; text-decoration-thickness: 1px; }
.lang-switch button[aria-pressed="true"] { color: var(--ink); text-decoration: underline; }
.lang-switch button:hover { color: var(--ink); }
.ic { width: 1.2em; height: 1.2em; flex: none; display: inline-block; vertical-align: -0.22em; }
.btn .ic { width: 20px; height: 20px; }
.eyebrow .ic, .cs-meta dt .ic, .resume-row h2 .ic, .about-facts h3 .ic { margin-right: 6px; width: 18px; height: 18px; vertical-align: -0.25em; }
.connect-email .ic { margin-right: 10px; vertical-align: -0.12em; }
.text-link .ic { width: 18px; height: 18px; }

/* Centered hero and connect */
.hero { justify-items: center; text-align: center; padding-block: 64px 72px; }
.hero h1 { justify-content: center; }
.connect { justify-items: center; text-align: center; }
.connect-actions { justify-content: center; }

/* Footer: copyright row only */
.footer { padding-top: 0; }
.footer .copyright { align-items: center; padding-block: 24px 32px; }

/* Thai: no negative tracking, it breaks stacked vowel and tone marks */
:lang(th) body, :lang(th) h1, :lang(th) h2, :lang(th) h3, :lang(th) h4, :lang(th) .nav-links a, :lang(th) .cs-head p, :lang(th) .bullets, :lang(th) .about-text, :lang(th) .hmw li, :lang(th) .quote, :lang(th) .work-card .summary, :lang(th) .cs-meta dd, :lang(th) .hero p, :lang(th) .cs-lede { letter-spacing: 0; }
:lang(th) h1, :lang(th) h2 { line-height: 1.3; }
:lang(th) body { line-height: 1.75; }

@media (max-width: 720px) {
  .brand { font-size: 15px; }
  .nav-bar { gap: 12px; }
  .lang-switch { margin-left: auto; }
  .lang-switch .ic { display: none; }
}
@media (max-width: 720px) { .lang-switch { order: 2; } .menu-btn { order: 3; } }

/* Toolkit cards */
.tools-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; border-top: 1px solid var(--rule); }
.tool { display: grid; gap: 10px; align-content: start; padding-block: 24px; border-bottom: 1px solid var(--line); }
.tool-head { display: flex; gap: 14px; align-items: center; }
.tool-head h4 { font-size: 20px; font-weight: 600; letter-spacing: var(--track-title); }
.tool-head .eyebrow { margin-top: 2px; }
.tool-logo { width: 32px; height: 32px; flex: none; color: var(--ink); }
.tool p:not(.eyebrow):not(.tool-metric) { color: var(--muted); }
.tool-metric { font-size: 14px; font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border: 1px solid var(--line); font-size: 15px; font-weight: 500; }
.chip .tool-logo { width: 18px; height: 18px; }
@media (max-width: 720px) { .tools-grid { grid-template-columns: minmax(0, 1fr); } }

/* Resume: grouped skills and tools */
.skill-groups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.skill-groups h3, .tool-group .eyebrow { font-size: 16px; font-weight: 600; letter-spacing: 0; margin-bottom: 10px; }
.skill-groups h3 { color: var(--ink); }
.tool-groups { display: grid; gap: 18px; }
.tool-group .eyebrow { margin-bottom: 8px; }
@media (max-width: 720px) { .skill-groups { grid-template-columns: minmax(0, 1fr); } }

/* Thai mode: Google Sans for the whole page, Thai and Latin alike */
html:lang(th) { --f-sans: "Google Sans", "Instrument Sans", "Helvetica Neue", Arial, system-ui, sans-serif; }

/* Let's Connect: black band in the CI black, white type */
.connect { background: var(--ink); color: var(--on-ink); border-top: 0; padding: 96px 24px 104px; margin-bottom: 24px; }
.connect .eyebrow { color: rgba(255, 255, 255, 0.6); }
.connect .btn { background: var(--on-ink); color: var(--ink); border-color: var(--on-ink); }
.connect .btn:hover { background: transparent; color: var(--on-ink); }
.connect .btn-outline { background: transparent; color: var(--on-ink); border-color: rgba(255, 255, 255, 0.5); }
.connect .btn-outline:hover { background: var(--on-ink); color: var(--ink); border-color: var(--on-ink); }
.connect-email { color: var(--on-ink); text-decoration-color: rgba(255, 255, 255, 0.5); }
.connect-email:hover { color: rgba(255, 255, 255, 0.7); }
@media (max-width: 720px) { .connect { padding: 64px 16px 72px; } }

/* Prompt shown as code */
.prompt-block { margin: 0; background: var(--ink); color: #E6E6E6; }
.prompt-bar { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 12px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.15); font: 500 13px/1.4 "JetBrains Mono", ui-monospace, Menlo, monospace; color: rgba(255, 255, 255, 0.6); }
.prompt-code { margin: 0; max-height: 560px; overflow: auto; padding: 20px 20px 24px 0; font: 400 13.5px/1.75 "JetBrains Mono", ui-monospace, Menlo, "Google Sans", monospace; letter-spacing: 0; counter-reset: ln; white-space: pre-wrap; word-break: break-word; }
.prompt-code:focus-visible { outline: 1px solid #FFFFFF; outline-offset: -4px; }
.prompt-code .ln { display: block; padding-left: 64px; position: relative; min-height: 1.75em; }
.prompt-code .ln::before { counter-increment: ln; content: counter(ln); position: absolute; left: 0; width: 44px; text-align: right; color: rgba(255, 255, 255, 0.3); }
.prompt-code .t { color: #FFFFFF; font-weight: 600; }
.prompt-code .h { color: #FFFFFF; font-weight: 600; margin-top: 0.5em; }
.prompt-code .bul { color: rgba(255, 255, 255, 0.4); }
.prompt-code .tok { color: #FFFFFF; background: rgba(255, 255, 255, 0.12); padding: 0 4px; }
.prompt-code .no { color: #000000; background: #FFFFFF; padding: 0 3px; }
.prompt-notes { margin-top: 4px; }
.prompt-notes h4 { font-size: 18px; }
.prompt-notes p:not(.eyebrow) { color: var(--muted); }
@media (max-width: 720px) { .prompt-code { font-size: 12.5px; max-height: 480px; } .prompt-code .ln { padding-left: 48px; } .prompt-code .ln::before { width: 32px; } }

/* Design system rules list */
.rules { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.rule { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 24px; padding-block: 24px; border-bottom: 1px solid var(--line); }
.rule-meta { display: grid; gap: 4px; align-content: start; }
.rule-num { font-size: 32px; font-weight: 400; letter-spacing: var(--track-display); line-height: 1; }
.rule-date { font: 500 12px/1.4 "JetBrains Mono", ui-monospace, Menlo, monospace; color: var(--muted); }
.rule-body { display: grid; gap: 10px; min-width: 0; }
.rule-body h4 { font-size: 20px; font-weight: 600; letter-spacing: var(--track-title); }
.rule-body > p { color: var(--muted); }
.rule-prompt { margin: 4px 0 0; padding: 12px 16px; background: var(--ink); color: #E6E6E6; font: 400 13px/1.7 "JetBrains Mono", ui-monospace, Menlo, "Google Sans", monospace; letter-spacing: 0; white-space: pre-wrap; word-break: break-word; }
.rule-prompt::before { content: "prompt"; display: block; margin-bottom: 4px; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255, 255, 255, 0.45); }
.rule-prompt .tok { color: #FFFFFF; background: rgba(255, 255, 255, 0.12); padding: 0 4px; }
.rule-prompt .no { color: #000000; background: #FFFFFF; padding: 0 3px; }
@media (max-width: 720px) { .rule { grid-template-columns: minmax(0, 1fr); gap: 12px; } .rule-meta { grid-auto-flow: column; justify-content: start; align-items: baseline; gap: 12px; } }

/* Language-only blocks: a page can carry its own Thai article instead of a translation */
html:lang(th) [data-only="en"], html:not(:lang(th)) [data-only="th"] { display: none !important; }
.article .cs-body > p { color: var(--muted); font-size: 18px; letter-spacing: var(--track-body); }
.article .cs-body > .bullets { color: var(--muted); font-size: 18px; }
.article .hmw b { font-weight: 600; }
.article :not(pre) > code { font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; font-size: 0.9em; background: var(--panel); padding: 2px 6px; }
.article .stack { display: grid; gap: 16px; }
.article .box p { color: var(--muted); }
.data-table { width: 100%; border-collapse: collapse; font-size: 17px; border-top: 1px solid var(--rule); }
.data-table th, .data-table td { padding: 12px 0; border-bottom: 1px solid var(--line); text-align: left; }
.data-table th { font-weight: 600; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }