/* ============================================================
   Matthew Szuromi — cosmic / Cajal theme
   Shared across all pages. Plain CSS, no build step. Dark only.
   ============================================================ */

:root{
  --ink:#06050d;
  --panel:rgba(28,22,40,.5);
  --panel-solid:#0d0b16;
  --cream:#f3ead4;
  --gold:#e2b878;
  --gold-strong:#eecb93;
  --muted:#b3a07f;
  --faint:#8a7d66;
  --cyan:#5ac8e4;
  --line:rgba(226,184,120,.16);
  --line-strong:rgba(226,184,120,.34);
  --on-accent:#241803;
  --header-bg:rgba(6,5,13,.55);
  --footer-bg:rgba(0,0,0,.35);
  --font-display:'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-body:'EB Garamond', Georgia, 'Times New Roman', serif;
  --wrap:1080px;
  color-scheme:dark;
}

/* Light theme — Cajal ink on paper */
:root[data-theme="light"]{
  --ink:#f1e7d0;
  --panel:rgba(255,250,238,.62);
  --panel-solid:#faf3e2;
  --cream:#2c2316;
  --gold:#8a4524;
  --gold-strong:#6f3318;
  --muted:#6f5d40;
  --faint:#9a8a6a;
  --cyan:#2f6e88;
  --line:rgba(120,80,40,.22);
  --line-strong:rgba(120,80,40,.40);
  --on-accent:#f4ecd9;
  --header-bg:rgba(241,231,208,.62);
  --footer-bg:rgba(120,84,40,.06);
  color-scheme:light;
}
:root[data-theme="light"] body::before{
  background:
    radial-gradient(60% 55% at 80% 18%, rgba(201,172,124,.20), transparent 72%),
    radial-gradient(55% 50% at 12% 84%, rgba(205,176,128,.16), transparent 72%),
    radial-gradient(50% 50% at 92% 74%, rgba(214,190,146,.14), transparent 72%),
    var(--ink);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:19px;
  line-height:1.62;
  color:var(--cream);
  background:var(--ink);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
/* static cosmic nebula behind interior pages */
body::before{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(60% 55% at 80% 18%, rgba(58,29,110,.34), transparent 72%),
    radial-gradient(55% 50% at 90% 72%, rgba(110,31,85,.26), transparent 72%),
    radial-gradient(55% 55% at 12% 82%, rgba(15,58,68,.24), transparent 72%),
    radial-gradient(45% 45% at 8% 12%, rgba(26,33,96,.22), transparent 72%),
    var(--ink);
}

img{max-width:100%;display:block}
a{color:var(--gold);text-decoration:none}
a:hover{color:var(--gold-strong)}
::selection{background:var(--gold);color:var(--on-accent)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:3px}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(22px,5vw,48px)}
.muted{color:var(--muted)}

.skip-link{position:absolute;left:12px;top:-60px;background:var(--gold);color:var(--on-accent);padding:10px 16px;border-radius:6px;z-index:200;transition:top .18s}
.skip-link:focus{top:12px}

.ico{width:20px;height:20px;display:inline-block;vertical-align:middle;flex:none}
.ico-sm{width:15px;height:15px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--header-bg);-webkit-backdrop-filter:saturate(150%) blur(12px);backdrop-filter:saturate(150%) blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:18px;height:68px}
.brand{font-family:var(--font-display);font-weight:600;font-size:1.42rem;letter-spacing:.01em;color:var(--cream)}
.brand:hover{color:var(--cream)}
.nav{margin-left:auto;display:flex;gap:6px}
.nav a{font-family:var(--font-body);color:var(--muted);font-size:1.08rem;letter-spacing:.01em;padding:6px 14px;border-radius:6px;transition:color .2s,background .2s}
.nav a:hover{color:var(--cream);background:rgba(226,184,120,.06)}
.nav a.active{color:var(--gold)}
.header-actions{display:flex;align-items:center;gap:6px}
.icon-btn{display:grid;place-items:center;width:42px;height:42px;padding:0;background:transparent;color:var(--cream);border:1px solid transparent;border-radius:8px;cursor:pointer;transition:background .15s,color .15s}
.icon-btn:hover{background:rgba(226,184,120,.08);color:var(--gold)}
.theme-toggle .ico-sun{display:block}
.theme-toggle .ico-moon{display:none}
:root[data-theme="light"] .theme-toggle .ico-sun{display:none}
:root[data-theme="light"] .theme-toggle .ico-moon{display:block}
.nav-toggle{display:none}
.bars{display:grid;gap:4px}
.bars span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] .bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Sections / type ---------- */
section{scroll-margin-top:86px}
.section{padding:clamp(56px,8vw,104px) 0;position:relative}
.section-head{max-width:62ch;margin-bottom:44px}
.eyebrow{font-family:var(--font-body);font-style:italic;font-size:1.16rem;letter-spacing:.02em;color:var(--gold);margin:0 0 14px;opacity:.92}
h1,h2,h3{font-family:var(--font-display);font-weight:600;color:var(--cream);letter-spacing:-.005em}
h1{font-size:clamp(2.8rem,6vw,4.2rem);line-height:1;margin:0 0 16px}
h2{font-size:clamp(2.1rem,3.6vw,2.9rem);line-height:1.05;margin:0 0 16px}
h3{font-size:1.5rem;margin:0 0 6px}
.section-intro{color:var(--muted);font-size:1.12rem;margin:0}
p{margin:0 0 16px}

/* ---------- Buttons ---------- */
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:30px}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-body);font-weight:500;font-size:1.08rem;letter-spacing:.01em;padding:12px 28px;border-radius:3px;border:1px solid transparent;cursor:pointer;transition:transform .14s,background .18s,border-color .18s,color .18s}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--gold);color:var(--on-accent)}
.btn-primary:hover{background:var(--gold-strong);color:var(--on-accent)}
.btn-ghost{background:transparent;color:var(--cream);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-strong);background:rgba(226,184,120,.06)}
.link-ext{display:inline-flex;align-items:center;gap:5px;font-weight:500;color:var(--gold)}
.link-ext:hover .ico{transform:translate(2px,-2px)}
.link-ext .ico{transition:transform .15s}

/* ---------- Tags ---------- */
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:9px;padding:0;margin:26px 0 0}
.tags li{font-size:.98rem;color:var(--gold-strong);background:rgba(226,184,120,.08);border:1px solid var(--line);padding:5px 14px;border-radius:999px}

/* ---------- About (home, below hero) ---------- */
.about-section{background:linear-gradient(180deg, rgba(6,5,13,.4), var(--ink) 12%) , var(--ink)}
.about-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:clamp(32px,5vw,60px);align-items:start}
.bio p{color:var(--cream)}
.bio a{color:var(--gold);text-decoration:underline;text-decoration-color:rgba(226,184,120,.4);text-underline-offset:2px}
.bio a:hover{text-decoration-color:var(--gold)}
.facts{margin:0;display:grid;gap:16px;border-left:1px solid var(--line);padding-left:24px}
.facts>div{display:grid;gap:3px}
.facts dt{font-family:var(--font-body);font-style:italic;font-size:1rem;color:var(--gold);letter-spacing:.01em}
.facts dd{margin:0;font-size:1.04rem;color:var(--cream)}
.social{list-style:none;display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:0}
.social a{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.02);color:var(--muted);transition:color .15s,border-color .15s,transform .14s}
.social a:hover{color:var(--gold);border-color:var(--gold);transform:translateY(-2px)}

/* ---------- Cards / research areas ---------- */
.cards,.areas{display:grid;gap:22px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:clamp(24px,3vw,34px);display:grid;grid-template-columns:260px 1fr;gap:30px;transition:border-color .18s,transform .18s}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong)}
.card-head{align-self:start}
.card-title{font-family:var(--font-display);font-weight:600;font-size:1.62rem;line-height:1.12;margin:0;color:var(--cream)}
.card-tag{margin:8px 0 0;font-style:italic;font-size:1.02rem;color:var(--muted)}
.card-tag a{color:var(--gold)}
.card-body{min-width:0}
.card-list{margin:0;padding-left:1.1em;display:grid;gap:13px}
.card-list li{color:var(--muted)}
.card-list li::marker{color:var(--gold)}
.card-list strong{color:var(--cream);font-weight:500}
.card-pubs{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.pubs-subhead{font-family:var(--font-body);font-style:italic;font-weight:400;font-size:1.05rem;letter-spacing:.01em;color:var(--gold);margin:0 0 14px;text-transform:none}
.pub-c{margin:0 0 15px}
.pub-c:last-child{margin-bottom:0}
.pub-c-title{margin:0;font-weight:500;color:var(--cream);line-height:1.35;font-size:1.08rem}
.pub-c-meta{margin:3px 0 0;color:var(--muted);font-size:1rem}
.pub-c-meta a{display:inline-flex;align-items:center;gap:3px;color:var(--gold);white-space:nowrap}
.section-foot{margin-top:32px;font-size:1.04rem}

/* ---------- About Me (personality) ---------- */
.fun-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.fun-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;transition:transform .18s,border-color .18s}
.fun-card:hover{transform:translateY(-2px);border-color:var(--line-strong)}
.fun-card .emoji{font-size:1.9rem;line-height:1;display:block}
.fun-title{font-family:var(--font-display);font-weight:600;font-size:1.4rem;margin:12px 0 6px;color:var(--cream)}
.fun-card p{margin:0;color:var(--muted)}
.bills-banner{margin-top:24px;display:flex;align-items:center;gap:22px;padding:28px clamp(24px,3vw,36px);border-radius:14px;background:linear-gradient(135deg,#00338d,#0a4bc0);border-left:5px solid #c60c30;color:#fff}
.bills-emoji{font-size:3rem;line-height:1;flex:none}
.bills-title{font-family:var(--font-display);font-weight:600;color:#fff;font-size:1.7rem;margin:0 0 4px}
.bills-banner p{margin:0;color:rgba(255,255,255,.92)}
.bills-banner strong{color:#fff;font-weight:500}

/* ---------- CV highlights (if used) ---------- */
.cv-grid{display:grid;grid-template-columns:1fr 320px;gap:clamp(28px,4vw,48px);align-items:start}

/* ---------- Footer ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:48px 0 30px;position:relative;z-index:2}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px}
.footer-name{font-family:var(--font-display);font-size:1.5rem;margin:0;color:var(--cream)}
.footer-contact p{margin:0}
.footer-fine{margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}
.footer-fine p{margin:0;font-size:.98rem}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .about-grid{grid-template-columns:1fr}
  .facts{border-left:none;padding-left:0;border-top:1px solid var(--line);padding-top:22px}
  .card{grid-template-columns:1fr;gap:16px}
}
@media (max-width:680px){
  .nav{position:fixed;inset:68px 0 auto 0;flex-direction:column;gap:0;background:var(--panel-solid);border-bottom:1px solid var(--line);padding:8px 0 14px;margin:0;transform:translateY(-130%);transition:transform .25s}
  .nav.open{transform:translateY(0)}
  .nav a{padding:13px clamp(22px,5vw,48px);border-radius:0}
  .nav-toggle{display:grid}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}