/*
Theme Name: Sophia Huang 2026
Theme URI: https://sophia-huang.ai
Author: Sophia Huang
Description: Personal founder and thought-leader site for Sophia Huang. Type C minimal design with C-Series art frame, built for AEO/GEO.
Version: 3.3.0
Requires PHP: 7.4
Text Domain: sophia-huang-2026
*/

/* sophia-huang.ai · "Type C" minimal · v0.3
   ILAB-inspired minimal studio layout · Alegreya serif
   C-Series fluid artwork · asterisk accent motif */
:root{
  --paper:#FBFAF7;
  --ink:#141414;
  --ink-dim:rgba(20,20,20,.66);
  --plum-dim:rgba(20,20,20,.66);   /* legacy alias used in inline styles */
  --violet:#5000E6;
  --line:rgba(20,20,20,.14);
  --maxw:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Alegreya','Noto Serif TC','Noto Serif JP',Georgia,serif;
  background:var(--paper);
  color:var(--ink);
  line-height:1.68;
  font-size:18px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:'Alegreya','Noto Serif TC','Noto Serif JP',Georgia,serif;line-height:1.06;font-weight:500;letter-spacing:-.015em}
.kicker,.meta,nav,.btn,.wordmark,.tl-item .when,.tag,.essay-item .when,.post-meta{font-family:'Inter','Noto Sans TC','Noto Sans JP',system-ui,sans-serif}
a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--violet);text-underline-offset:3px}
a:hover{color:var(--violet)}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}


/* --- C-Series art frame: the graphic is the page border ---
   A fixed, viewport-filling art layer sits behind a white content sheet;
   the artwork shows only through the sheet's margins, framing every page. */
html{background:#0b0b12}
body{background:transparent}
body::before{
  content:"";position:fixed;inset:0;z-index:0;
  background:#0b0b12 center/cover no-repeat;
}
html.art-home body::before{background-image:url('img/c-series/robert-clark.jpg')}
html.art-about body::before{background-image:url('img/c-series/pawel-czerwinski.jpg')}
html.art-work body::before{background-image:url('img/c-series/susan-wilkinson-brain.jpg')}
html.art-writing body::before{background-image:url('img/c-series/susan-wilkinson-2.jpg')}
html.art-speaking body::before{background-image:url('img/c-series/robert-clark.jpg')}
.sheet{position:relative;z-index:1;margin:16px;background:var(--paper);box-shadow:0 0 0 1px rgba(20,20,20,.25)}
@media (max-width:640px){
  .sheet{margin:10px}
}

/* header */
header{position:sticky;top:16px;z-index:50;background:rgba(251,250,247,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;max-width:var(--maxw);margin:0 auto}
.wordmark{font-weight:600;font-size:1rem;color:var(--ink);text-decoration:none;letter-spacing:.01em}
.wordmark .star{color:var(--violet)}
.wordmark .zh{font-weight:400;color:var(--ink-dim);margin-left:8px;font-size:.9em}
nav.links{display:flex;gap:24px;font-size:.92rem}
nav.links a{color:var(--ink-dim);text-decoration:none;text-transform:lowercase}
nav.links a:hover{color:var(--ink)}
nav.links a[aria-current="page"]{color:var(--violet)}
nav.links .lang{border-left:1px solid var(--line);padding-left:24px}
nav.links .lang a{color:var(--violet);text-transform:uppercase}
nav.links .lang a:hover{color:var(--ink)}

/* hero: text + C-Series art panel */
.hero{padding:88px 0 72px}
.hero .wrap{display:block}
.hero.no-art .wrap{display:block}
.hero .eyebrow{color:var(--ink-dim);font-weight:500;letter-spacing:.16em;text-transform:lowercase;font-size:.82rem;margin-bottom:22px;font-family:'Inter',sans-serif}
.hero h1{font-size:clamp(2.5rem,5.8vw,4.4rem);text-transform:lowercase}
.hero h1 em{font-style:italic;color:var(--violet)}
.hero h1 em::before{content:"*";font-style:normal;margin-right:.04em}
.hero h1 em::after{content:"*";font-style:normal;margin-left:.04em}
.hero .lede{margin-top:28px;max-width:58ch;font-size:1.1rem;color:var(--ink-dim)}

/* hero portrait (photography guardrail lifted 2026-07-18) */
.hero.with-portrait .wrap{display:flex;align-items:center;gap:56px}
.hero.with-portrait .hero-text{flex:1 1 auto;min-width:0}
.hero-portrait{flex:0 0 300px}
.hero-portrait img{width:100%;height:auto;border-radius:2px;box-shadow:0 0 0 1px rgba(20,20,20,.18)}
@media (max-width:860px){
  .hero.with-portrait .wrap{display:block}
  .hero-portrait{margin-top:36px;max-width:260px}
}

/* photo row (Work · IPAC) */
.photo-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-top:28px}
.photo-row figure{margin:0}
.photo-row img{width:100%;height:100%;object-fit:cover;border-radius:2px;box-shadow:0 0 0 1px rgba(20,20,20,.14)}
.photo-credit{margin-top:10px;font-size:.78rem;color:var(--ink-dim);font-family:'Inter','Noto Sans TC','Noto Sans JP',sans-serif;letter-spacing:.06em}

/* sections */
section{padding:64px 0;border-top:1px solid var(--line)}
section h2{font-size:2rem;margin-bottom:8px;text-transform:lowercase}
section .kicker{color:var(--violet);font-weight:600;letter-spacing:.18em;text-transform:lowercase;font-size:.75rem;margin-bottom:12px}
.grid{display:grid;gap:0;margin-top:30px;border-top:1px solid var(--line)}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:transparent;border:0;border-bottom:1px solid var(--line);border-right:1px solid var(--line);border-radius:0;padding:30px 26px}
.card h3{font-size:1.18rem;margin-bottom:10px}
.card p{font-size:.96rem;color:var(--ink-dim)}
.card .meta{font-size:.72rem;color:var(--violet);font-weight:600;letter-spacing:.16em;text-transform:uppercase;margin-bottom:10px}

/* personal statement (home · "Why I bring technology into the theater") */
.statement{max-width:72ch;margin-top:24px}
.statement p{margin-bottom:1.1em;font-size:1.1rem;color:var(--ink-dim)}
.statement .statement-close{color:var(--violet);font-style:italic;font-size:1.35rem;margin-top:.3em}
html[lang="ja"] .statement .statement-close,html[lang="zh-Hant"] .statement .statement-close{font-style:normal}

/* definition block */
.definition{
  border-left:3px solid var(--violet);
  padding:6px 0 6px 30px;margin-top:28px;font-size:1.12rem;max-width:75ch;
}
.definition strong{color:var(--violet);font-weight:600}

/* timeline */
.timeline{margin-top:28px;display:grid;gap:0;border-top:1px solid var(--line)}
.tl-item{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}
.tl-item .when{color:var(--violet);font-weight:600;font-size:.85rem;letter-spacing:.04em}
.tl-item h3{font-size:1.1rem}
.tl-item p{font-size:.95rem;color:var(--ink-dim);margin-top:4px}

/* FAQ */
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{font-weight:500;font-size:1.15rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::after{content:"*";color:var(--violet);font-size:1.5rem;line-height:1}
.faq details[open] summary::after{content:"×"}
.faq details p{margin-top:12px;color:var(--ink-dim);max-width:70ch}

/* essay list (/essays/) */
.essay-list{margin-top:28px;display:grid;gap:0;border-top:1px solid var(--line)}
.essay-item{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}
.essay-item .when{color:var(--violet);font-weight:600;font-size:.85rem;letter-spacing:.04em}
.essay-item h3{font-size:1.15rem}
.essay-item h3 a{text-decoration:none}
.essay-item h3 a:hover{color:var(--violet)}
.essay-item p{font-size:.95rem;color:var(--ink-dim);margin-top:4px;max-width:68ch}
@media (max-width:640px){.essay-item{grid-template-columns:1fr}}

/* single essay: natural-case title, reading measure */
.post-hero h1{text-transform:none;font-size:clamp(2.1rem,4.6vw,3.3rem)}
.post-meta{margin-top:22px;color:var(--ink-dim);font-size:.85rem;letter-spacing:.06em}
.post-body{max-width:68ch;font-size:19px;line-height:1.72}
.post-body p{margin-bottom:1.2em}
.post-body h2,.post-body h3{margin:1.6em 0 .5em;text-transform:none}
.post-body h2{font-size:1.5rem}
.post-body h3{font-size:1.2rem}
.post-body blockquote{border-left:3px solid var(--violet);padding-left:24px;color:var(--ink-dim);margin:1.4em 0}
.post-body ul,.post-body ol{margin:0 0 1.2em 1.3em}
/* definition lists — used by the definitional essays' glossary sections */
.post-body dl{margin:1.4em 0}
.post-body dt{font-family:'Inter','Noto Sans TC','Noto Sans JP',system-ui,sans-serif;font-weight:600;font-size:.95rem;letter-spacing:.01em;color:var(--violet);margin-top:1.1em}
.post-body dd{margin:.3em 0 0 0;color:var(--ink-dim)}

/* placeholder marker (pre-launch only) */
.placeholder{border:2px dashed var(--violet);background:rgba(80,0,230,.04);border-radius:4px;padding:24px;color:var(--ink-dim);font-size:.95rem}
.placeholder .tag{display:inline-block;background:var(--violet);color:#fff;font-weight:700;font-size:.7rem;letter-spacing:.12em;padding:3px 10px;border-radius:2px;margin-bottom:10px}

/* buttons */
.btn{display:inline-block;background:var(--ink);color:var(--paper);padding:13px 30px;border-radius:2px;font-weight:600;font-size:.9rem;text-decoration:none;text-transform:lowercase;letter-spacing:.04em}
.btn:hover{background:var(--violet);color:#fff}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn.ghost:hover{border-color:var(--violet);color:var(--violet);background:transparent}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}

/* footer */
footer{border-top:1px solid var(--ink);padding:44px 0 52px;margin-top:64px;color:var(--ink-dim);font-size:.9rem;font-family:'Inter',sans-serif}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer a{color:var(--ink-dim);text-decoration:none}
footer a:hover{color:var(--violet)}

/* Japanese pages: Latin lowercase transform would corrupt AI, CEO, product names */
html[lang="ja"] .eyebrow,html[lang="ja"] .hero h1,html[lang="ja"] section h2,html[lang="ja"] .kicker,html[lang="ja"] .btn,html[lang="zh-Hant"] .eyebrow,html[lang="zh-Hant"] .hero h1,html[lang="zh-Hant"] section h2,html[lang="zh-Hant"] .kicker,html[lang="zh-Hant"] .btn{text-transform:none}


@media (max-width:640px){
  .tl-item{grid-template-columns:1fr}
  .hero{padding:56px 0 44px}
  nav.links{gap:14px;font-size:.86rem;flex-wrap:wrap}
  nav.links .lang{padding-left:14px}
  header{top:10px}
}