/* ============================================================
   iam-amos.io — design system
   One consolidated layer (replaces the former base + elevation +
   creative style stacks). Warm-editorial system: cream canvas,
   navy band, clay accent; Caslon display / Georgia body /
   JetBrains Mono details. Light + dark themes, reduced-motion
   aware, print-friendly, no external origins.
   ============================================================ */

/* ---- Self-hosted fonts (latin subsets) ---- */
@font-face{
  font-family:"Libre Caslon Display";
  font-style:normal;
  font-weight:400;
  font-display:swap;
  src:url("/assets/fonts/libre-caslon-display-latin.woff2") format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:"JetBrains Mono";
  font-style:normal;
  font-weight:300 400;
  font-display:swap;
  src:url("/assets/fonts/jetbrains-mono-latin.woff2") format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}

/* ---- Tokens ---- */
:root{
  color-scheme:light;

  /* band (dark in both themes) */
  --band:#1E2A3A;
  --band-2:#27374D;
  --band-deep:#1A2433;
  --band-edge:rgba(214,146,78,.16);

  /* canvas + surfaces */
  --content-bg:#FDF0E6;
  --surface:#F4E7DD;
  --surface-2:#FBF3EC;
  --field-bg:#FBF3EC;
  --border:#DDCFC6;
  --border-strong:#C6B6AB;

  /* text */
  --tx:#334058;
  --tx2:#5F5865;
  --tx3:#68615A;          /* muted tones darkened from the original palette */
  --tx4:#6E675E;          /* to clear WCAG AA 4.5:1 on all warm surfaces */
  --ink:#283450;

  /* accents */
  --ac:#A65830;
  --ac-2:#C76A38;
  --ac-glow:#D6924E;
  --sage:#3A7050;
  --sky:#2A6890;
  --plum:#604080;
  --amber:#806818;
  --err:#B0341F;
  --ok:#3A7050;
  --ok-bg:rgba(58,112,80,.08);

  /* type */
  --f-display:"Libre Caslon Display",Georgia,serif;
  --f-body:Georgia,serif;
  --f-mono:"JetBrains Mono",ui-monospace,monospace;

  /* shape + elevation (warm-tinted, never neutral grey) */
  --radius:14px;
  --radius-sm:10px;
  --sh-1:0 1px 2px rgba(74,48,30,.05);
  --sh-2:0 16px 40px -16px rgba(86,54,32,.26),0 4px 12px -6px rgba(86,54,32,.14);
  --sh-inset:inset 0 1px 0 rgba(255,255,255,.55);

  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  --grain-opacity:.04;
  --wash-1:rgba(166,88,48,.055);
  --wash-2:rgba(96,64,128,.035);
}

/* dark theme tokens (explicit choice wins; system preference as default) */
[data-theme="dark"]{
  color-scheme:dark;
  --content-bg:#151C28;
  --surface:#1B2432;
  --surface-2:#202B3B;
  --field-bg:#1B2432;
  --border:#313D4F;
  --border-strong:#465468;
  --tx:#D9D2C7;
  --tx2:#B4ACA0;
  --tx3:#968E82;
  --tx4:#9A9184;
  --ink:#E8E1D6;
  --ac:#D6924E;
  --ac-2:#C76A38;
  --err:#E06A52;
  --ok:#7FBF9A;
  --ok-bg:rgba(127,191,154,.08);
  --sh-1:0 1px 2px rgba(0,0,0,.3);
  --sh-2:0 16px 40px -16px rgba(0,0,0,.5),0 4px 12px -6px rgba(0,0,0,.3);
  --sh-inset:inset 0 1px 0 rgba(255,255,255,.04);
  --grain-opacity:.05;
  --wash-1:rgba(214,146,78,.05);
  --wash-2:rgba(96,64,128,.06);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --content-bg:#151C28;
    --surface:#1B2432;
    --surface-2:#202B3B;
    --field-bg:#1B2432;
    --border:#313D4F;
    --border-strong:#465468;
    --tx:#D9D2C7;
    --tx2:#B4ACA0;
    --tx3:#968E82;
    --tx4:#9A9184;
    --ink:#E8E1D6;
    --ac:#D6924E;
    --ac-2:#C76A38;
    --err:#E06A52;
    --ok:#7FBF9A;
    --ok-bg:rgba(127,191,154,.08);
    --sh-1:0 1px 2px rgba(0,0,0,.3);
    --sh-2:0 16px 40px -16px rgba(0,0,0,.5),0 4px 12px -6px rgba(0,0,0,.3);
    --sh-inset:inset 0 1px 0 rgba(255,255,255,.04);
    --grain-opacity:.05;
    --wash-1:rgba(214,146,78,.05);
    --wash-2:rgba(96,64,128,.06);
  }
}

/* ---- Reset + canvas ---- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{
  font-family:var(--f-body);
  color:var(--tx);
  font-size:1rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  background:
    radial-gradient(1100px 560px at 50% -8%, var(--wash-1), transparent 62%),
    radial-gradient(900px 700px at 100% 8%, var(--wash-2), transparent 60%),
    var(--content-bg);
  background-attachment:fixed;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:var(--grain);background-size:220px 220px;opacity:var(--grain-opacity);
}
img{max-width:100%}

/* Routing: pre-paint head script stamps .js and data-route on <html>;
   without JS every section stays visible (progressive enhancement). */
.js [data-page]{display:none}
.js[data-route="home"] #home,
.js[data-route="writings"] #writings,
.js[data-route="projects"] #projects,
.js[data-route="experience"] #experience,
.js[data-route="contact"] #contact{display:block}

/* ---- Accessibility ---- */
a:focus-visible,button:focus-visible{
  outline:2px solid var(--ac);
  outline-offset:3px;
  border-radius:2px;
}
/* Sections and <main> take programmatic focus (route changes, skip link);
   the default ring around a whole page section is noise, not signal. */
[data-page]:focus,main:focus{outline:none}
.skip-link{
  position:absolute;left:-999px;top:0;
  background:var(--surface-2);color:var(--tx);
  padding:.6rem 1rem;z-index:300;
  font-family:var(--f-body);font-size:.9rem;
  border:1px solid var(--border);
}
.skip-link:focus{left:.5rem;top:.5rem}
/* ---- Scroll progress (clay) pinned to the top edge ---- */
.scroll-prog{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:200;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--ac),var(--ac-2),var(--ac-glow));
  box-shadow:0 1px 6px rgba(166,88,48,.5);
  will-change:transform;transition:transform .08s linear;
}

/* ---- Slim sticky nav ---- */
.header{
  position:sticky;top:0;z-index:100;width:100%;
  background:
    radial-gradient(620px 280px at 50% -40%, rgba(214,146,78,.20), transparent 70%),
    linear-gradient(180deg,var(--band-2) 0%,var(--band) 58%,var(--band-deep) 100%);
  border-bottom:1px solid var(--band-edge);
  box-shadow:0 1px 0 var(--band-edge),0 10px 30px -18px rgba(16,22,33,.6);
}
.header::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:var(--grain);background-size:200px 200px;opacity:.05;
  mix-blend-mode:overlay;
}
.header-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:.7rem;
  max-width:1140px;margin:0 auto;padding:.7rem 1.2rem;
}
.avatar{
  width:34px;height:34px;border-radius:50%;flex:none;
  border:2px solid rgba(255,255,255,.85);object-fit:cover;
  box-shadow:0 4px 12px -4px rgba(0,0,0,.55),0 0 0 3px rgba(214,146,78,.12);
}
.h-name{
  margin-right:auto;
  font-family:var(--f-body);font-size:.98rem;font-weight:400;
  color:#fff;letter-spacing:.01em;line-height:1.2;text-decoration:none;
}
.tabs{display:flex;flex-wrap:nowrap;align-items:center}
.tab{
  font-family:var(--f-body);font-size:.84rem;color:rgba(255,255,255,.6);
  padding:.5rem .85rem;background:none;border:none;border-radius:8px;
  cursor:pointer;text-decoration:none;letter-spacing:.01em;
  transition:color .18s,background .18s;
}
.tab:hover{color:rgba(255,255,255,.85);background:rgba(255,255,255,.06)}
.tab[aria-current]{color:#fff;background:rgba(255,255,255,.12)}

/* theme toggle (in the nav) */
.theme-toggle{
  width:34px;height:34px;flex:none;border-radius:50%;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  transition:background .18s,border-color .18s;
}
.theme-toggle:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.36)}
.theme-toggle svg{width:16px;height:16px;fill:rgba(255,255,255,.85)}
.theme-toggle .icon-sun{display:none}
[data-theme="dark"] .theme-toggle .icon-sun{display:block}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .theme-toggle .icon-sun{display:block}
  :root:not([data-theme="light"]) .theme-toggle .icon-moon{display:none}
}

/* ---- Header band variant (index): petar-v-style centered masthead ---- */
.header.band{position:static;padding:2.4rem 1rem 0}
.band-inner{position:relative;z-index:1;max-width:960px;margin:0 auto;text-align:center}
.band-inner .theme-toggle{position:absolute;top:0;right:.25rem}
.avatar-lg{
  width:112px;height:112px;border-radius:50%;object-fit:cover;display:block;margin:0 auto 1rem;
  border:2px solid rgba(255,255,255,.85);
  box-shadow:0 10px 26px -8px rgba(0,0,0,.55),0 0 0 5px rgba(214,146,78,.12);
}
.band-name{font-family:var(--f-body);font-size:1.35rem;color:#fff;letter-spacing:.02em;line-height:1.2}
.band-title{
  font-family:var(--f-display);font-size:clamp(1.7rem,4.2vw,2.3rem);font-weight:400;color:#fff;
  line-height:1.15;margin-top:.25rem;letter-spacing:-.01em;text-wrap:balance;
}
.band-sub{font-family:var(--f-body);font-size:.95rem;font-style:italic;color:rgba(255,255,255,.65);margin-top:.4rem}
.band .tabs{justify-content:center;flex-wrap:wrap;margin-top:1.5rem}

/* ---- Home top: status pill, socials, resume CTA, stat strip (on cream) ---- */
.home-top{display:flex;justify-content:center;margin:0 0 1.3rem}
.status-pill{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.02em;color:var(--tx2);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);border-radius:999px;padding:.4rem .9rem;
  box-shadow:var(--sh-1),var(--sh-inset);
}
.status-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--sage);position:relative;flex:none}
.status-pill .dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--sage);opacity:.5;animation:ping 2.4s cubic-bezier(0,0,.2,1) infinite}
@keyframes ping{0%{transform:scale(.6);opacity:.7}80%,100%{transform:scale(1.9);opacity:0}}

.socials{display:flex;justify-content:center;gap:.6rem;margin:0 0 1.6rem}
.social{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:opacity .18s,transform .18s}
.social:hover{opacity:.85;transform:scale(1.05)}
.social svg{width:21px;height:21px;fill:#fff}
.s-email{background:#5C554A}
.s-linkedin{background:#0A66C2}
.s-github{background:#24292E}

.resume-cta{display:flex;justify-content:center;margin:0 0 1.9rem}
.btn-resume{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--f-body);font-size:.9rem;font-weight:600;
  color:var(--ac);background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border-strong);border-radius:999px;
  padding:.55rem 1.4rem;text-decoration:none;box-shadow:var(--sh-1);
  transition:color .18s,border-color .18s,background .18s,transform .12s,box-shadow .18s;
}
.btn-resume svg{width:16px;height:16px;fill:currentColor;transition:transform .18s}
.btn-resume:hover{color:#fff;background:var(--ac);border-color:var(--ac);transform:translateY(-1px);box-shadow:0 8px 18px rgba(166,88,48,.22)}
.btn-resume:hover svg{transform:translateY(2px)}

.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:.7rem;margin:.2rem 0 .5rem;list-style:none}
.stat{
  position:relative;padding:1rem .9rem 1.05rem;border-radius:var(--radius-sm);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);box-shadow:var(--sh-1),var(--sh-inset);overflow:hidden;
}
.stat::before{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:linear-gradient(90deg,var(--ac),var(--ac-2),transparent 75%)}
.stat-num{font-family:var(--f-display);font-size:2rem;line-height:1;color:var(--ink);letter-spacing:-.01em;display:flex;align-items:baseline;gap:.08em}
.stat-suf{font-family:var(--f-mono);font-size:.72rem;color:var(--ac)}
.stat-label{font-family:var(--f-body);font-size:.78rem;color:var(--tx3);line-height:1.35;margin-top:.5rem}

/* buttons shared with the 404 page */
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:.7rem;margin-bottom:2.4rem}
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;gap:.5rem;font-family:var(--f-body);font-size:.92rem;font-weight:600;
  border-radius:999px;padding:.66rem 1.4rem;text-decoration:none;transition:transform .14s,box-shadow .2s,background .2s,border-color .2s,color .2s;
}
.btn-primary{color:#fff;background:linear-gradient(180deg,var(--ac-2),#A65830);border:1px solid #A65830;box-shadow:0 10px 24px -8px rgba(166,88,48,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px -10px rgba(166,88,48,.7)}
.btn-primary svg{width:16px;height:16px;fill:currentColor}
.btn-ghost{color:rgba(255,255,255,.88);background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.22)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4);transform:translateY(-2px)}

/* ---- Content ---- */
.content{position:relative;z-index:1;max-width:760px;margin:0 auto;padding:2rem 2rem}
h1.page-title,h2.sub-title{font-family:var(--f-body);font-weight:700;color:var(--ink);letter-spacing:-.01em;text-wrap:balance;position:relative}
h1.page-title{font-size:1.3rem;margin-bottom:1rem;padding-bottom:.55rem}
h1.page-title.big{font-size:1.5rem}
h1.page-title::after{
  content:"";position:absolute;left:0;bottom:0;width:36px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--ac),var(--ac-2));
}
h2.sub-title{font-size:1.1rem;margin-bottom:.8rem}
h2.sub-title.lg{font-size:1.3rem}
h2.sub-title.cat{margin-top:1.8rem;margin-bottom:.9rem;padding-left:.85rem}
h2.sub-title.cat::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:1.1em;border-radius:2px;
  background:linear-gradient(180deg,var(--ac),var(--ac-2));
}
.page-subtitle{font-family:var(--f-body);font-size:.95rem;color:var(--tx2);margin-bottom:1.2rem;text-wrap:pretty;max-width:62ch}
hr{border:none;height:1px;margin:2rem 0;background:linear-gradient(90deg,transparent,var(--border) 12%,var(--border) 88%,transparent)}

/* numbered eyebrows */
.eyebrow{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ac);display:flex;align-items:center;gap:.6rem;margin:0 0 .9rem}
.eyebrow::before{content:attr(data-n);font-size:.66rem;color:var(--tx4);letter-spacing:.05em}

/* bio + pull-quote */
.bio{font-family:var(--f-body);font-size:1rem;color:var(--tx);line-height:1.85;text-wrap:pretty}
.bio + .bio{margin-top:1.1rem}
#home .bio:first-of-type::first-letter{
  font-family:var(--f-display);font-size:3.1rem;line-height:.82;
  float:left;margin:.18rem .55rem 0 0;color:var(--ac);font-weight:400;
}
.pullquote{
  font-family:var(--f-display);font-size:clamp(1.4rem,3.2vw,2rem);line-height:1.32;color:var(--ink);
  text-wrap:balance;margin:2rem 0;padding-left:1.4rem;border-left:3px solid;
  border-image:linear-gradient(180deg,var(--ac),var(--ac-2)) 1;
}
.pullquote em{font-style:italic;color:var(--ac)}

/* affiliation / recognition badges */
.creds{display:flex;flex-wrap:wrap;gap:.5rem;margin:0 0 1.9rem}
.cred{
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.03em;color:var(--tx3);
  border:1px solid var(--border);border-radius:999px;padding:.32rem .7rem;background:var(--surface-2);
  white-space:nowrap;
}
.cred.cred-strong{
  color:var(--ac);border-color:rgba(166,88,48,.4);
  background:linear-gradient(180deg,rgba(166,88,48,.10),rgba(166,88,48,.05));
  box-shadow:var(--sh-1);
}

/* focus areas: chip row */
.focus-label{font-family:var(--f-body);font-size:1.05rem;font-weight:700;color:var(--ink);margin:1.6rem 0 .8rem}
.focus-list{list-style:none;display:flex;flex-wrap:wrap;gap:.5rem}
.focus-list li{
  padding:.46rem .85rem;font-family:var(--f-body);font-size:.85rem;color:var(--tx);line-height:1.3;
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);border-radius:999px;box-shadow:var(--sh-1);
  transition:border-color .18s,transform .18s,box-shadow .18s;
}
.focus-list li:hover{border-color:var(--border-strong);transform:translateY(-1px);box-shadow:var(--sh-2)}

/* ---- Cards (writings home / featured work) ---- */
.w-item,.feat-item{
  padding:1rem 1.1rem;border-radius:var(--radius-sm);margin-bottom:1rem;
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);box-shadow:var(--sh-1),var(--sh-inset);
  transition:border-color .18s,transform .18s,box-shadow .18s;
}
.w-item:hover,.feat-item:hover{border-color:var(--border-strong);transform:translateY(-2px);box-shadow:var(--sh-2)}
.w-item{margin-bottom:1.2rem}
.feat-item:last-child{margin-bottom:0}
.w-title,.feat-name{
  font-family:var(--f-body);font-size:1rem;font-weight:700;color:var(--tx);text-decoration:none;
  display:inline-flex;align-items:center;gap:.3rem;word-break:break-word;
}
.w-desc,.feat-desc{font-family:var(--f-body);font-size:.88rem;color:var(--tx3);line-height:1.6;margin-top:.15rem}
.feat-name .ext{width:11px;height:11px;fill:var(--tx3);flex:none}
.feat-more{display:inline-block;margin-top:.45rem;font-family:var(--f-mono);font-size:.72rem;color:var(--ac);text-decoration:none}
.feat-more:hover{text-decoration:underline}
.see-more{font-family:var(--f-body);font-size:.88rem;color:var(--ac);text-decoration:underline}
.bottom-link{display:inline-block;margin-top:1.4rem;font-family:var(--f-body);font-size:.95rem;color:var(--ac);text-decoration:underline}

/* animated underline on inline title links */
.w-title,.feat-name,.entry-title,.pcard-name{background-image:linear-gradient(var(--ac),var(--ac));background-size:0% 1px;background-position:0 100%;background-repeat:no-repeat;transition:background-size .25s}
.w-title:hover,.feat-name:hover,.entry-title:hover,.pcard-name:hover{background-size:100% 1px;text-decoration:none}

/* ---- Blog index (Writing tab) ---- */
.tag-filter{display:flex;flex-wrap:wrap;gap:.45rem;margin:0 0 1.6rem}
.chip{
  font-family:var(--f-mono);font-size:.64rem;letter-spacing:.04em;color:var(--tx3);
  border:1px solid var(--border);border-radius:999px;padding:.28rem .7rem;
  background:var(--surface-2);white-space:nowrap;
}
.chip-btn{cursor:pointer;transition:color .15s,border-color .15s,background .15s}
.chip-btn:hover{color:var(--tx);border-color:var(--border-strong)}
.chip-btn[aria-pressed="true"]{color:#fff;background:var(--ac);border-color:var(--ac)}
.blog-entry{padding:1.5rem 0;border-bottom:1px solid var(--border)}
.blog-entry:first-child{padding-top:.4rem}
.blog-entry:last-child{border-bottom:none}
.blog-title{
  font-family:var(--f-display);font-size:clamp(1.25rem,2.6vw,1.55rem);font-weight:400;
  line-height:1.25;letter-spacing:-.01em;color:var(--ink);text-decoration:none;
  text-wrap:balance;display:inline;
  background-image:linear-gradient(var(--ac),var(--ac));background-size:0% 1px;
  background-position:0 100%;background-repeat:no-repeat;transition:background-size .25s;
}
.blog-title:hover{background-size:100% 1px}
.blog-title .ext{width:13px;height:13px;fill:var(--tx3);vertical-align:baseline}
.blog-title.as-button{background-color:transparent;border:none;padding:0;cursor:pointer;text-align:left}
.blog-title.as-button .caret{width:16px;height:16px;fill:var(--tx3);vertical-align:middle;transition:transform .2s}
.blog-title.as-button[aria-expanded="true"] .caret{transform:rotate(180deg)}
.blog-summary{font-family:var(--f-body);font-size:.92rem;color:var(--tx2);line-height:1.7;margin-top:.5rem;max-width:62ch;text-wrap:pretty}
.blog-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:.45rem .55rem;margin-top:.7rem;
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.04em;color:var(--tx3);
}
.blog-meta .sep{color:var(--tx4)}

/* ---- Writings list ---- */
.writings-sub{font-family:var(--f-mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--tx4);margin:2rem 0 .4rem}
.writings-group{margin-bottom:.4rem}
.entry{padding:1rem 0;border-bottom:1px solid var(--border)}
.entry-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem}
.entry-title{font-family:var(--f-body);font-size:1rem;font-weight:700;color:var(--tx);text-decoration:none}
.entry-date{font-family:var(--f-mono);font-size:.7rem;color:var(--tx4);white-space:nowrap;letter-spacing:.03em}
.entry-desc{font-family:var(--f-body);font-size:.88rem;font-style:italic;color:var(--tx3);line-height:1.6;margin-top:.25rem}
.entry-meta{margin-left:auto;display:inline-flex;align-items:center;gap:.5rem;white-space:nowrap}
.entry-outlet{font-style:normal;font-weight:600;color:var(--tx2)}
/* expandable inline post (title acts as a disclosure button) */
.entry-title.as-button{display:inline-flex;align-items:center;gap:.3rem;background:none;border:none;padding:0;margin:0;cursor:pointer;font-family:var(--f-body);font-size:1rem;font-weight:700;color:var(--tx);text-align:left;line-height:inherit}
.entry-title.as-button .caret{width:15px;height:15px;fill:var(--tx3);flex:none;transition:transform .2s}
.entry-title.as-button[aria-expanded="true"] .caret{transform:rotate(180deg)}
.entry-body{font-family:var(--f-body);font-size:.92rem;color:var(--tx);line-height:1.8;margin-top:.7rem}
.entry-body p{margin-bottom:.8rem}
.entry-body p:last-child{margin-bottom:0}
.entry-body a{color:var(--ac);text-decoration:underline}
.entry-body h3{font-family:var(--f-body);font-size:1rem;font-weight:700;color:var(--tx);margin:1rem 0 .4rem}
.entry-body ul,.entry-body ol{margin:.4rem 0 .8rem 1.2rem}
.entry-body li{margin-bottom:.3rem}
.entry-body code{font-family:var(--f-mono);font-size:.85em;background:var(--surface);padding:.1rem .35rem;border-radius:4px}

/* ---- Project cards ---- */
.proj-grid{display:grid;grid-template-columns:1fr 1fr;gap:.85rem}
.pcard{
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);border-radius:var(--radius);padding:1.15rem;
  box-shadow:var(--sh-1),var(--sh-inset);
  transition:border-color .18s,transform .18s,box-shadow .18s;
  display:flex;flex-direction:column;position:relative;overflow:hidden;
}
.pcard::before{ /* gradient-mask hairline revealed on hover */
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(135deg,var(--ac),var(--ac-2) 35%,transparent 65%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .25s;pointer-events:none;
}
.pcard:hover{border-color:var(--border-strong);transform:translateY(-3px);box-shadow:var(--sh-2)}
.pcard:hover::before{opacity:1}
.pcard-head{display:flex;align-items:baseline;justify-content:space-between;gap:.5rem}
.pcard-name{font-family:var(--f-body);font-size:.95rem;font-weight:700;color:var(--tx);text-decoration:none;display:inline-flex;align-items:center;gap:.3rem;word-break:break-word}
.pcard-name .ext{width:11px;height:11px;fill:var(--tx3);flex:none}
.lang{font-family:var(--f-mono);font-size:.58rem;letter-spacing:.02em;border:1px solid var(--border);border-radius:12px;padding:.1rem .5rem;color:var(--tx3);background:var(--surface-2);white-space:nowrap;flex:none}
.pcard-desc{font-family:var(--f-body);font-size:.82rem;color:var(--tx2);line-height:1.5;margin-top:.4rem}
.pstar{font-family:var(--f-mono);font-size:.65rem;color:var(--tx4);margin-top:.5rem;letter-spacing:.02em}

/* ---- Research threads ---- */
.thread{
  padding:.7rem 1rem .7rem .9rem;border-left:3px solid var(--border);margin-bottom:.7rem;
  background:linear-gradient(90deg,var(--surface-2),transparent 80%);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  transition:transform .18s,background .18s;
}
.thread:hover{transform:translateX(3px)}
.thread:last-child{margin-bottom:0}
.thread.plum{border-left-color:var(--plum)}
.thread.sage{border-left-color:var(--sage)}
.thread.sky{border-left-color:var(--sky)}
.thread.amber{border-left-color:var(--amber)}
.thread-name{font-family:var(--f-body);font-size:.95rem;font-weight:700;color:var(--tx)}
.thread-desc{font-family:var(--f-body);font-size:.85rem;color:var(--tx3);line-height:1.5}

/* ---- Experience timeline (spine + node) ---- */
.xp{display:grid;grid-template-columns:140px 1fr;gap:2rem;margin-bottom:2rem}
.xp:last-of-type{margin-bottom:0}
.xp-date{font-family:var(--f-mono);font-size:.78rem;color:var(--tx4);line-height:1.5;letter-spacing:.02em}
.xp-body{position:relative;padding-left:1.6rem;border-left:1px solid var(--border)}
.xp-body::before{
  content:"";position:absolute;left:-5px;top:.42rem;width:9px;height:9px;border-radius:50%;
  background:var(--ac);box-shadow:0 0 0 4px var(--content-bg),0 0 0 5px var(--border);
}
.xp:hover .xp-body::before{background:var(--ac-2);box-shadow:0 0 0 4px var(--content-bg),0 0 0 5px var(--ac)}
.xp-org{font-family:var(--f-body);font-size:1.05rem;font-weight:700;color:var(--tx)}
.xp-loc{font-family:var(--f-body);font-size:.88rem;font-weight:400;color:var(--tx3)}
.xp-role{font-family:var(--f-body);font-size:.92rem;font-style:italic;color:var(--tx2);margin:.1rem 0 .5rem}
.xp-line{font-family:var(--f-body);font-size:.88rem;color:var(--tx2);line-height:1.7;margin-bottom:.5rem}
.xp-skills{display:inline-block;font-family:var(--f-mono);font-size:.7rem;color:var(--tx3);letter-spacing:.02em;line-height:1.6}
.xp.compact{margin-bottom:1.2rem}
.xp.compact .xp-org{font-size:.95rem}

/* ---- Stack groups ---- */
.stack-group{padding:.85rem 1rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);box-shadow:var(--sh-1);margin-bottom:.9rem}
.stack-group:last-child{margin-bottom:0}
.stack-cat{font-family:var(--f-mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--tx4);margin-bottom:.15rem}
.stack-items{font-family:var(--f-body);font-size:.88rem;color:var(--tx2);line-height:1.6}

/* ---- Contact form ---- */
.contact-form{margin-bottom:.5rem}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 1rem}
.field{display:flex;flex-direction:column;margin-bottom:1.1rem}
.field.full{grid-column:1 / -1}
.field label{font-family:var(--f-mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.07em;color:var(--tx3);margin-bottom:.4rem}
.field label .req{color:var(--ac);font-weight:400}
.field input,.field textarea{
  font-family:var(--f-body);font-size:.95rem;color:var(--tx);
  background:var(--field-bg);border:1px solid var(--border);border-radius:8px;
  padding:.7rem .8rem;width:100%;line-height:1.5;box-shadow:var(--sh-inset);
  transition:border-color .18s;
}
.field input:focus,.field textarea:focus{outline:2px solid var(--ac);outline-offset:1px;border-color:var(--ac)}
.field input::placeholder,.field textarea::placeholder{color:var(--tx4)}
.field textarea{resize:vertical;min-height:140px}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--err)}
.field-err{font-family:var(--f-body);font-size:.78rem;color:var(--err);margin-top:.3rem;min-height:.95rem;line-height:1.2}
/* honeypot — visually removed for humans, present for bots */
.field-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.btn{
  font-family:var(--f-body);font-size:.95rem;font-weight:600;color:#fff;
  background:linear-gradient(180deg,var(--ac-2),#A65830);border:1px solid #A65830;border-radius:8px;
  padding:.7rem 1.6rem;cursor:pointer;display:inline-flex;align-items:center;gap:.5rem;
  box-shadow:0 8px 18px -6px rgba(166,88,48,.45);
  transition:background .18s,transform .05s;
}
.btn:hover{background:linear-gradient(180deg,#b3613a,#8f4a27)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.6;cursor:wait}
.btn svg{width:16px;height:16px;fill:currentColor}
.form-status{font-family:var(--f-body);font-size:.9rem;color:var(--ok);background:var(--ok-bg);border:1px solid var(--ok);border-radius:8px;padding:.8rem 1rem;margin-top:1.1rem;line-height:1.6}
.form-status.error{color:var(--err);background:rgba(176,52,31,.07);border-color:var(--err)}
.form-status a{color:inherit}
.form-note{font-family:var(--f-body);font-size:.82rem;color:var(--tx3);margin-top:1rem;line-height:1.65}
.form-note a{color:var(--ac);text-decoration:underline}
.open-to-label{font-family:var(--f-body);font-size:.95rem;font-weight:600;color:var(--tx);margin-bottom:.4rem}
.open-to-list{list-style:none;margin-top:.2rem}
.open-to-list li{font-family:var(--f-body);font-size:.95rem;color:var(--tx2);line-height:1.75;padding-left:1.1rem;position:relative}
.open-to-list li::before{content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--ac)}

/* ---- Footer ---- */
.site-footer{
  position:relative;width:100%;padding:2.6rem 1.5rem 2.8rem;margin-top:3rem;
  border-top:1px solid var(--band-edge);
  background:radial-gradient(600px 200px at 50% 0%, rgba(214,146,78,.10), transparent 70%),var(--band);
}
.site-footer::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:var(--grain);background-size:200px 200px;opacity:.04;mix-blend-mode:overlay}
.footer-inner{position:relative;z-index:1;max-width:760px;margin:0 auto;text-align:center}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;margin-bottom:1.2rem}
.footer-links a{position:relative;font-family:var(--f-body);font-size:.9rem;color:rgba(255,255,255,.78);text-decoration:none;padding:.2rem 1rem;transition:color .18s}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-links a:not(:last-child)::after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);height:.95em;width:1px;background:rgba(255,255,255,.22)}
.footer-links a:focus-visible{outline:2px solid #fff;outline-offset:3px;border-radius:2px}
.footer-disclaimer{font-family:var(--f-body);font-size:.78rem;font-style:italic;color:rgba(255,255,255,.52);line-height:1.7;max-width:60ch;margin:0 auto}

/* ---- Case-study pages ---- */
.cs-hero{
  position:relative;width:100%;overflow:hidden;
  background:linear-gradient(180deg,var(--band-deep) 0%,var(--band) 60%,#22303f 100%);
  border-bottom:1px solid rgba(214,146,78,.18);
  padding:clamp(2.6rem,6vw,4rem) 1.5rem clamp(2rem,4vw,2.8rem);
}
.cs-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 360px at 80% 0%, rgba(214,146,78,.18), transparent 60%);
}
.cs-hero-inner{position:relative;z-index:1;max-width:820px;margin:0 auto}
.cs-breadcrumb{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:1.2rem}
.cs-breadcrumb a{color:#E2A36A;text-decoration:none}
.cs-breadcrumb a:hover{text-decoration:underline}
.cs-breadcrumb span{color:rgba(255,255,255,.45)}
.cs-title{font-family:var(--f-display);font-weight:400;color:#fff;font-size:clamp(2rem,5vw,3.4rem);line-height:1.05;letter-spacing:-.01em;text-wrap:balance;max-width:20ch}
.cs-sub{font-family:var(--f-body);font-size:clamp(.98rem,1.5vw,1.1rem);color:rgba(255,255,255,.78);line-height:1.7;max-width:58ch;margin-top:1rem;text-wrap:pretty}
.cs-facts{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.6rem}
.cs-facts .cred{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.2);color:rgba(255,255,255,.75)}
.cs-facts .cred-strong{color:#E2A36A;border-color:rgba(226,163,106,.45);background:rgba(214,146,78,.12)}

.cs-body{max-width:760px;margin:0 auto;padding:2.4rem 2rem 1rem}
.prose h2{font-family:var(--f-body);font-size:1.2rem;font-weight:700;color:var(--ink);margin:2.2rem 0 .8rem;position:relative;padding-left:.85rem}
.prose h2::before{content:"";position:absolute;left:0;top:.18em;width:4px;height:1.1em;border-radius:2px;background:linear-gradient(180deg,var(--ac),var(--ac-2))}
.prose h3{font-family:var(--f-body);font-size:1.02rem;font-weight:700;color:var(--ink);margin:1.5rem 0 .5rem}
.prose p{font-family:var(--f-body);font-size:.97rem;color:var(--tx);line-height:1.85;margin-bottom:1rem;text-wrap:pretty}
.prose ul,.prose ol{margin:.4rem 0 1.1rem 1.3rem}
.prose li{font-family:var(--f-body);font-size:.94rem;color:var(--tx2);line-height:1.75;margin-bottom:.35rem}
.prose li strong{color:var(--tx)}
.prose a{color:var(--ac);text-decoration:underline}
.prose code{font-family:var(--f-mono);font-size:.84em;background:var(--surface);padding:.1rem .35rem;border-radius:4px}
.prose .lead{font-size:1.08rem;color:var(--tx);line-height:1.8}

/* impact stat row */
.cs-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem;margin:1.6rem 0}
.cs-stat{
  position:relative;padding:1rem .9rem 1.05rem;border-radius:var(--radius-sm);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);box-shadow:var(--sh-1),var(--sh-inset);overflow:hidden;
}
.cs-stat::before{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:linear-gradient(90deg,var(--ac),var(--ac-2),transparent 75%)}
.cs-stat-num{font-family:var(--f-display);font-size:1.8rem;line-height:1;color:var(--ink);letter-spacing:-.01em}
.cs-stat-num .suf{font-family:var(--f-mono);font-size:.72rem;color:var(--ac);margin-left:.1em}
.cs-stat-label{font-family:var(--f-body);font-size:.78rem;color:var(--tx3);line-height:1.35;margin-top:.5rem}

/* architecture diagram */
.diagram{
  margin:1.4rem 0;padding:1.2rem;border:1px solid var(--border);border-radius:var(--radius);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));box-shadow:var(--sh-1),var(--sh-inset);
  overflow-x:auto;
}
.diagram svg{display:block;width:100%;height:auto;min-width:560px}
.diagram-caption{font-family:var(--f-body);font-size:.8rem;font-style:italic;color:var(--tx3);margin-top:.7rem;text-align:center}
/* diagram color roles (SVGs reference currentColor + these vars) */
.diagram .d-box{fill:var(--surface-2);stroke:var(--border-strong)}
.diagram .d-box-ac{fill:var(--surface-2);stroke:var(--ac)}
.diagram .d-label{font-family:var(--f-mono);font-size:11px;fill:var(--tx)}
.diagram .d-sublabel{font-family:var(--f-mono);font-size:9px;fill:var(--tx3)}
.diagram .d-zone{fill:none;stroke:var(--border);stroke-dasharray:5 4}
.diagram .d-zone-label{font-family:var(--f-mono);font-size:9px;letter-spacing:.08em;fill:var(--tx4)}
.diagram .d-arrow{stroke:var(--tx3);fill:none;marker-end:url(#arr)}
.diagram .d-arrow-ac{stroke:var(--ac);fill:none;marker-end:url(#arrAc)}
.diagram .d-arrhead{fill:var(--tx3)}
.diagram .d-arrhead-ac{fill:var(--ac)}

/* decision / callout block */
.callout{
  margin:1.3rem 0;padding:1rem 1.2rem;border-left:3px solid var(--ac);
  background:linear-gradient(90deg,var(--surface-2),transparent 90%);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.callout-label{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ac);margin-bottom:.35rem}
.callout p{font-size:.92rem;margin-bottom:0}

/* prev/next case-study nav */
.cs-nav{display:flex;justify-content:space-between;gap:1rem;margin:2.6rem 0 0;padding-top:1.6rem;border-top:1px solid var(--border)}
.cs-nav a{font-family:var(--f-body);font-size:.92rem;color:var(--ac);text-decoration:none;max-width:46%}
.cs-nav a:hover{text-decoration:underline}
.cs-nav a.next{text-align:right;margin-left:auto}
.cs-nav .dir{display:block;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--tx4);margin-bottom:.2rem}

/* ---- Motion: section fade + scroll reveal ---- */
@keyframes fu{to{opacity:1;transform:translateY(0)}}
.js .fi{opacity:0;transform:translateY(12px);animation:fu .5s cubic-bezier(.16,1,.3,1) forwards}
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.16,1,.3,1),transform .6s cubic-bezier(.16,1,.3,1)}
.js .reveal.in{opacity:1;transform:none}

/* ---- Responsive ---- */
@media(max-width:860px){
  .h-name{display:none}          /* keep the brand mark, let tabs breathe */
  .header-inner{gap:.5rem;justify-content:space-between}
  .tabs{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .tab{white-space:nowrap}
  .stat-strip{grid-template-columns:1fr 1fr;gap:.55rem}
  .stat-num{font-size:1.7rem}
}
@media(max-width:768px){
  .content{padding:1rem}
  .cs-body{padding:1.6rem 1rem 1rem}
  .proj-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:0}
  .xp{grid-template-columns:1fr;gap:.4rem;margin-bottom:1.6rem}
  .xp-date{font-size:.72rem}
  .cs-stats{grid-template-columns:1fr 1fr}
  #home .bio:first-of-type::first-letter{font-size:2.6rem}
  .status-pill{font-size:.66rem}
}
@media(max-width:480px){
  .hero-cta{gap:.55rem}
  .btn-primary,.btn-ghost{padding:.6rem 1.1rem;font-size:.88rem}
  .cs-stats{grid-template-columns:1fr}
}

/* ---- Reduced motion ---- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body{background-attachment:scroll}
  .scroll-prog{transition:none}
  .status-pill .dot::after{animation:none}
  .js .fi{opacity:1;transform:none;animation:none}
  .js .reveal{opacity:1;transform:none;transition:none}
  .pcard,.tab,.w-item,.feat-item,.focus-list li,.thread,.btn-primary,.btn-ghost,.social,.btn-resume,.footer-links a{transition:none}
  .pcard:hover,.w-item:hover,.feat-item:hover,.focus-list li:hover,.thread:hover,.btn-primary:hover,.btn-ghost:hover,.social:hover,.btn-resume:hover{transform:none}
  .entry-title.as-button .caret{transition:none}
}

/* ---- Print: flat, light document ---- */
@media print{
  body{background:#fff}
  body::before,.scroll-prog,.header::after,.site-footer::after,.socials,.theme-toggle{display:none}
  .js [data-page]{display:block}          /* print every section */
  .header,.cs-hero,.site-footer{background:#fff;border:none;box-shadow:none;position:static}
  .h-name,.band-name,.band-title,.band-sub,.cs-title,.cs-sub,.footer-links a,.footer-disclaimer{color:#000}
  .tabs,.skip-link,.bottom-link,.see-more,.hero-cta,.cs-nav{display:none!important}
  .content,.cs-body{max-width:100%}
  .pcard,.xp,.cs-stat,.diagram{break-inside:avoid}
  .cred,.focus-list li,.w-item,.feat-item,.pcard,.stack-group,.cs-stat{box-shadow:none;border:1px solid #ccc;background:#fff}
  .js .fi,.js .reveal{opacity:1;transform:none;animation:none}
  a{color:#000;text-decoration:none}
  h1.page-title::after,h2.sub-title.cat::before{background:#000}
}