/* ============================================================
   Steven L. Finkelstein — site design system  ("Editorial Portrait")
   Shared stylesheet for all pages.
   ============================================================ */

:root{
	--bg:#0a0d18; --bg2:#10152a; --bg3:#141b33; --line:#232c4a;
	--text:#eef1f8; --muted:#9aa5c0;
	--amber:#ecac4e; --cyan:#5bd3ea; --red:#d9594c;
	--maxw:1140px;
	--rad:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);
	font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
	line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:'Fraunces',Georgia,'Times New Roman',serif;font-weight:500;line-height:1.1;letter-spacing:-.01em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(1.2rem,4vw,2.4rem)}
.eyebrow{font-size:.7rem;font-weight:700;letter-spacing:.28em;text-transform:uppercase;color:var(--amber)}
.amber{color:var(--amber)} .italic{font-style:italic}

/* ---------- NAV ---------- */
header.nav{position:fixed;inset:0 0 auto 0;z-index:50;background:rgba(10,13,24,.55);
	backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .3s,border-color .3s}
header.nav.scrolled{background:rgba(10,13,24,.92);border-bottom-color:var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:.85rem clamp(1.2rem,4vw,2.4rem);
	display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{font-family:'Fraunces';font-weight:600;font-size:1.08rem;white-space:nowrap}
.brand .dot{color:var(--amber)}
nav.menu ul{display:flex;gap:1.5rem;list-style:none;align-items:center}
nav.menu a{font-size:.88rem;color:var(--muted);transition:color .2s}
nav.menu a:hover,nav.menu a.active{color:var(--text)}
nav.menu a.cv{color:var(--bg);background:var(--amber);padding:.45rem .9rem;border-radius:2rem;font-weight:700;display:inline-flex;gap:.4rem;align-items:center}
nav.menu a.cv:hover{background:#f4bd68;color:var(--bg)}
.menu-btn{display:none;background:none;border:0;color:var(--text);font-size:1.5rem;cursor:pointer;line-height:1}

@media(max-width:820px){
	.menu-btn{display:block}
	nav.menu ul{position:fixed;inset:0 0 0 auto;width:min(80vw,320px);flex-direction:column;
		align-items:flex-start;gap:1.3rem;background:var(--bg2);border-left:1px solid var(--line);
		padding:5.5rem 2rem;transform:translateX(100%);transition:transform .3s;box-shadow:-30px 0 60px rgba(0,0,0,.5)}
	nav.menu ul.open{transform:translateX(0)}
	nav.menu a{font-size:1.05rem}
}

/* ---------- BUTTONS ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.3rem;border-radius:2rem;
	font-size:.9rem;font-weight:600;transition:transform .15s,background .2s,border-color .2s,color .2s}
.btn:hover{transform:translateY(-2px)}
.btn-p{background:var(--amber);color:var(--bg)} .btn-p:hover{background:#f4bd68;color:var(--bg)}
.btn-g{border:1px solid var(--line);color:var(--text)} .btn-g:hover{border-color:var(--amber);color:var(--amber)}

/* ---------- MASTHEAD (home + about) ---------- */
.mast{padding:8rem 0 4rem;position:relative;
	background:radial-gradient(760px 520px at 88% 8%,rgba(91,211,234,.12),transparent 62%)}
.mast-grid{display:grid;grid-template-columns:auto 1fr;gap:clamp(1.6rem,4vw,3rem);align-items:center}
.portrait{width:clamp(130px,16vw,185px);aspect-ratio:1;border-radius:18px;object-fit:cover;
	border:1px solid var(--line);box-shadow:0 20px 50px rgba(0,0,0,.5);outline:6px solid rgba(236,172,78,.08)}
.mast h1{font-size:clamp(2.3rem,5.4vw,3.8rem);margin:.9rem 0 .5rem}
.mast h1 em{font-style:italic;color:var(--amber)}
.mast .titles{color:var(--muted);font-size:1rem;line-height:1.8}
.mast .titles b{color:var(--text);font-weight:600}
.mast .btns{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.5rem}
@media(max-width:620px){.mast-grid{grid-template-columns:1fr}}

/* ---------- INTERIOR PAGE HERO ---------- */
.page-hero{padding:8rem 0 2.5rem;background:radial-gradient(700px 400px at 90% -10%,rgba(236,172,78,.10),transparent 60%)}
.page-hero h1{font-size:clamp(2.2rem,5vw,3.4rem);margin:.7rem 0 .8rem}
.page-hero p.lead{color:var(--muted);font-size:1.08rem;max-width:62ch}

/* ---------- SECTIONS ---------- */
section.block{padding:clamp(3.5rem,7vw,6rem) 0}
.head{max-width:640px;margin-bottom:2.4rem}
.head h2{font-size:clamp(1.8rem,4vw,2.6rem);margin:.7rem 0 .6rem}
.head p{color:var(--muted)}
.seeall{display:inline-block;margin-top:2rem;color:var(--amber);font-weight:600;font-size:.92rem;transition:letter-spacing .2s}
.seeall:hover{letter-spacing:.02em}

/* ---------- RESEARCH CHAPTERS (no cards) ---------- */
.chapters{border-top:1px solid var(--line)}
.chapter{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,5vw,4.5rem);align-items:center;
	padding:clamp(1.6rem,4vw,3rem) 0;border-bottom:1px solid var(--line)}
.chapter:nth-child(even) .ch-visual{order:2}
.ch-visual{aspect-ratio:4/3;border-radius:var(--rad);overflow:hidden;position:relative;border:1px solid var(--line)}
.ch-visual img{width:100%;height:100%;object-fit:cover}
.ch-visual.g-cyan{background:radial-gradient(120% 120% at 20% 10%,rgba(91,211,234,.4),transparent 55%),linear-gradient(145deg,#0e2740,#0a0d18)}
.ch-visual.g-red{background:radial-gradient(120% 120% at 80% 20%,rgba(217,89,76,.45),transparent 55%),linear-gradient(145deg,#2a1012,#0a0d18)}
.ch-visual.g-amber{background:radial-gradient(120% 120% at 70% 80%,rgba(236,172,78,.4),transparent 55%),linear-gradient(145deg,#2a2210,#0a0d18)}
.ch-visual .glyph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
	font-family:'Fraunces';font-style:italic;font-size:clamp(2rem,5vw,3.4rem);color:rgba(255,255,255,.92);text-align:center;padding:1rem}
.ch-text .eyebrow{margin-bottom:1rem}
.ch-text h2{font-size:clamp(1.7rem,3.6vw,2.6rem);margin-bottom:1rem}
.ch-text p{color:var(--muted);font-size:1.03rem;max-width:48ch;margin-bottom:.9rem}
.ch-text .more{display:inline-block;margin-top:.5rem;color:var(--amber);font-weight:600;font-size:.92rem}
@media(max-width:720px){.chapter{grid-template-columns:1fr}.chapter:nth-child(even) .ch-visual{order:0}}

/* ---------- NEWS LIST + HUB ---------- */
.news-wrap{background:var(--bg2)}
.tabs{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1.6rem}
.tab{font-size:.78rem;font-weight:600;letter-spacing:.05em;color:var(--muted);background:transparent;
	border:1px solid var(--line);padding:.5rem 1rem;border-radius:2rem;cursor:pointer;transition:.2s}
.tab:hover{color:var(--text);border-color:var(--muted)}
.tab.active{background:var(--amber);color:var(--bg);border-color:var(--amber)}
.nlist{border-top:1px solid var(--line)}
.nrow{display:grid;grid-template-columns:120px 118px 1fr auto;gap:1.2rem;align-items:center;
	padding:1.25rem .3rem;border-bottom:1px solid var(--line);transition:padding-left .2s,background .2s}
.nrow:hover{padding-left:1rem;background:rgba(255,255,255,.02)}
.nrow .date{font-size:.82rem;color:var(--muted)}
.nrow .outlet{display:block;font-size:.76rem;color:var(--muted);margin-top:.15rem}
.tag{font-size:.58rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;padding:.32em .7em;border-radius:2em;justify-self:start;white-space:nowrap}
.tag.press{background:rgba(236,172,78,.16);color:var(--amber)}
.tag.news{background:rgba(91,211,234,.16);color:var(--cyan)}
.tag.talk{background:rgba(217,89,76,.18);color:var(--red)}
.nrow h4{font-family:'Inter';font-weight:600;font-size:1rem;line-height:1.4}
.nrow:hover h4{color:var(--amber)}
.nrow .arrow{color:var(--muted);transition:transform .2s}.nrow:hover .arrow{transform:translateX(4px);color:var(--amber)}
.nrow .altlink{display:inline-block;margin-top:.3rem;font-size:.8rem;color:var(--cyan)}
@media(max-width:720px){.nrow{grid-template-columns:1fr;gap:.45rem}.nrow .arrow{display:none}}

/* ---------- PEOPLE ---------- */
.people{display:flex;flex-wrap:wrap;gap:1.1rem;margin-top:.3rem}
.person{text-align:center;width:86px}
.person img{width:78px;height:78px;border-radius:50%;object-fit:cover;border:2px solid var(--line);filter:grayscale(.25);transition:.2s}
.person:hover img{border-color:var(--amber);filter:none}
.person span{display:block;font-size:.72rem;color:var(--muted);margin-top:.45rem}
.person a{display:block;border-bottom:none}
.person a:hover span{color:var(--amber)}
.person .pav{width:78px;height:78px;border-radius:50%;display:flex;align-items:center;justify-content:center;
	margin:0 auto;background:linear-gradient(145deg,#1d2545,#121831);border:2px solid var(--line);
	font-family:'Fraunces',serif;color:var(--amber);font-size:1.35rem;transition:border-color .2s}
.person a:hover .pav{border-color:var(--amber)}

/* People — full cards (group page) */
.member-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.6rem}
.member{background:var(--bg3);border:1px solid var(--line);border-radius:var(--rad);overflow:hidden;transition:transform .2s,border-color .2s}
.member:hover{transform:translateY(-4px);border-color:var(--line)}
.member .mimg{aspect-ratio:1;overflow:hidden;background:var(--bg2)}
.member .mimg img{width:100%;height:100%;object-fit:cover}
.member .mbody{padding:1.3rem}
.member h4{font-size:1.2rem;margin-bottom:.1rem}
.member .role{color:var(--amber);font-size:.8rem;font-weight:600;margin-bottom:.7rem}
.member p{color:var(--muted);font-size:.9rem}

/* ---------- PROSE / GENERIC CONTENT ---------- */
.prose{max-width:70ch}
.prose h2{font-size:1.8rem;margin:2.2rem 0 1rem}
.prose h3{font-size:1.3rem;margin:1.8rem 0 .7rem;color:var(--text)}
.prose p{color:var(--muted);margin-bottom:1.1rem}
.prose a{color:var(--amber);border-bottom:1px solid rgba(236,172,78,.3)}
.prose a:hover{border-bottom-color:var(--amber)}
.prose ul{color:var(--muted);margin:0 0 1.2rem 1.2rem;line-height:1.9}
.prose ul li{padding-left:.3rem}

/* ---------- PUBLICATIONS ---------- */
.pub{display:block;padding:1.3rem 0;border-bottom:1px solid var(--line);transition:padding-left .2s}
.pub:hover{padding-left:.6rem}
.pub .pyear{font-family:'Fraunces';color:var(--amber);font-size:.95rem}
.pub h4{font-family:'Inter';font-weight:600;font-size:1.05rem;margin:.2rem 0}
.pub .pmeta{color:var(--muted);font-size:.85rem}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(1.5rem,5vw,4rem);align-items:start}
.contact-card{background:var(--bg3);border:1px solid var(--line);border-radius:var(--rad);padding:1.6rem}
.contact-card .row{display:flex;justify-content:space-between;gap:1rem;padding:.7rem 0;border-bottom:1px dashed var(--line);font-size:.92rem}
.contact-card .row:last-child{border-bottom:0}
.contact-card .row span:first-child{color:var(--muted)}
@media(max-width:720px){.contact-grid{grid-template-columns:1fr}}

/* ---------- FOOTER ---------- */
footer.site{padding:3.2rem 0 2.4rem;border-top:1px solid var(--line);margin-top:2rem}
.fgrid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:2rem}
.fgrid h3{font-size:1.2rem;margin-bottom:.4rem}
.fgrid .muted{color:var(--muted);font-size:.9rem;max-width:34ch}
.flinks{display:flex;gap:1.3rem;flex-wrap:wrap;margin-top:1.1rem}
.flinks.col{flex-direction:column;gap:.6rem;margin-top:.9rem}
.flinks a{color:var(--muted);font-size:.9rem}.flinks a:hover{color:var(--amber)}
.copy{margin-top:2.4rem;padding-top:1.3rem;border-top:1px solid var(--line);color:var(--muted);font-size:.8rem;
	display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem}

/* ---------- IMAGE CREDIT (on research chapter visuals) ---------- */
.ch-visual{position:relative}
.ch-credit{position:absolute;left:0;right:0;bottom:0;padding:.5rem .7rem;
	font-size:.64rem;letter-spacing:.02em;color:rgba(255,255,255,.82);
	background:linear-gradient(0deg,rgba(0,0,0,.6),transparent);text-align:right}
.ch-credit a{color:inherit;border-bottom:1px solid rgba(255,255,255,.4)}

/* ---------- DATA SOURCES (survey chips) ---------- */
.survey-list{display:flex;flex-wrap:wrap;gap:.6rem;margin:.4rem 0 2rem}
.chip{display:inline-flex;align-items:center;gap:.4rem;font-size:.82rem;font-weight:600;
	color:var(--text);background:var(--bg3);border:1px solid var(--line);
	padding:.5rem .95rem;border-radius:2rem;transition:border-color .2s,transform .15s}
.chip:hover{border-color:var(--amber);transform:translateY(-2px)}
.chip .lead-pi{font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--amber)}

/* ---------- UNICORN HIGHLIGHT BOX ---------- */
.unicorn{position:relative;overflow:hidden;border-radius:var(--rad);
	border:1px solid #4e3580;background:
	radial-gradient(640px 320px at 90% -20%,rgba(176,124,198,.28),transparent 60%),
	linear-gradient(135deg,#181033 0%,#120e26 60%,#0d0a1a 100%);
	padding:clamp(1.6rem,4vw,2.6rem);margin:0 0 2.5rem}
.unicorn .uni-eyebrow{font-size:.7rem;font-weight:700;letter-spacing:.24em;text-transform:uppercase;color:#d48ec9}
.unicorn h3{font-size:clamp(1.5rem,3.4vw,2.1rem);margin:.5rem 0 .3rem;color:#f0eaff}
.unicorn h3 .uni-x{color:#b07cc6}
.unicorn .uni-sub{color:#d4baee;font-style:italic;font-size:.95rem;margin-bottom:1rem}
.unicorn p{color:#cdbce8;max-width:70ch;margin-bottom:1.1rem}
.unicorn .uni-btn{display:inline-flex;align-items:center;gap:.5rem;background:#b07cc6;color:#140e22;
	font-weight:700;font-size:.9rem;padding:.7rem 1.3rem;border-radius:2rem;transition:background .2s,transform .15s}
.unicorn .uni-btn:hover{background:#d48ec9;transform:translateY(-2px)}
.unicorn .uni-btn.uni-soon{background:transparent;border:1px solid #4e3580;color:#d4baee;cursor:default}
.unicorn .uni-btn.uni-soon:hover{background:transparent;transform:none}
.unicorn .uni-fields{display:flex;flex-wrap:wrap;gap:.45rem;margin-bottom:1.2rem}
.unicorn .uni-fields span{font-size:.72rem;color:#d4baee;background:rgba(176,124,198,.14);
	border:1px solid #4e3580;padding:.3rem .7rem;border-radius:2rem}

/* ---------- MEMBER PLACEHOLDER AVATAR (no photo yet) ---------- */
.mimg.ph{display:flex;align-items:center;justify-content:center;
	background:linear-gradient(145deg,#1d2545,#121831)}
.mimg.ph span{font-family:'Fraunces',serif;font-size:2.6rem;color:var(--amber);opacity:.85}

/* member role sub-note (e.g. "also PhD alumna") */
.member .subnote{font-size:.78rem;color:var(--muted);margin-top:.5rem;font-style:italic}
.member .mlink{display:inline-block;margin-top:.7rem;font-size:.82rem;color:var(--amber);font-weight:600}

/* alumni links */
.prose ul li a.alum{color:var(--amber);border-bottom:1px solid rgba(236,172,78,.3)}

/* ---------- PUBLICATIONS SEARCH + FILTER ---------- */
.pubsearch{width:100%;max-width:520px;background:var(--bg3);border:1px solid var(--line);
	color:var(--text);font-family:inherit;font-size:.95rem;padding:.8rem 1.1rem;border-radius:2rem;margin-bottom:1rem}
.pubsearch:focus{outline:none;border-color:var(--amber)}
.pubsearch::placeholder{color:var(--muted)}
.pubcount{font-size:.82rem;color:var(--muted);margin:.2rem 0 1.4rem}
.pub-top{display:flex;align-items:center;gap:.7rem;margin-bottom:.35rem}
.pub .tag{font-size:.56rem}
.tag.role-first{background:rgba(236,172,78,.18);color:var(--amber)}
.tag.role-student{background:rgba(91,211,234,.16);color:var(--cyan)}
.tag.role-second{background:rgba(176,124,198,.2);color:#d48ec9}
.tag.role-coauthor{background:rgba(255,255,255,.08);color:var(--muted)}
.tag.role-other{background:rgba(217,89,76,.16);color:var(--red)}
.tag.role-postled{background:rgba(154,123,208,.22);color:#bfa6ea}
.tag.role-gradled{background:rgba(91,211,234,.16);color:var(--cyan)}
.tag.role-ugradled{background:rgba(89,179,122,.20);color:#6cc38a}
.lm.lm-postled{border-top-color:#9a7bd0}
.lm.lm-gradled{border-top-color:var(--cyan)}
.lm.lm-ugradled{border-top-color:#59b37a}
.pmeta{word-break:break-word}

/* ---------- RECENT PAPERS (research page, grouped by category) ---------- */
.rp-cat{margin-bottom:2.2rem}
.rp-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;border-bottom:2px solid var(--line);padding-bottom:.5rem;margin-bottom:.2rem}
.rp-head h3{font-size:1.25rem}
.rp-all{font-size:.78rem;color:var(--amber);font-weight:600;white-space:nowrap}
.rp{display:grid;grid-template-columns:54px 1fr;gap:.9rem;padding:.6rem 0;border-bottom:1px solid rgba(255,255,255,.06)}
.rp-yr{font-family:'Fraunces',serif;color:var(--muted);font-size:.9rem}
.rp-t{font-size:.95rem;line-height:1.45}
.rp-t a{border-bottom:none}
.rp-t a:hover{color:var(--amber)}

/* ---------- LANDMARK GRID (publications, compact) ---------- */
.landmark-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:.5rem}
@media(max-width:900px){.landmark-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.landmark-grid{grid-template-columns:1fr}}
.lm{display:flex;flex-direction:column;gap:.55rem;background:var(--bg3);border:1px solid var(--line);
	border-top:3px solid var(--line);border-radius:12px;padding:1.05rem 1.05rem 1.15rem;transition:transform .2s,border-color .2s}
.lm:hover{transform:translateY(-4px)}
.lm.lm-first{border-top-color:var(--amber)}
.lm.lm-student{border-top-color:var(--cyan)}
.lm.lm-second{border-top-color:#d48ec9}
.lm-top{display:flex;align-items:center;justify-content:space-between;gap:.5rem}
.lm-cite{font-family:'Fraunces',serif;font-size:1.1rem;color:var(--amber);white-space:nowrap}
.lm-cite small{font-family:'Inter';font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.lm h4{font-family:'Inter';font-weight:600;font-size:.9rem;line-height:1.35;flex-grow:1}
.lm:hover h4{color:var(--amber)}
.lm-yr{font-size:.76rem;color:var(--muted)}
.lm-foot{display:flex;align-items:center;gap:.5rem;margin-top:auto;padding-top:.3rem}
.lm-face{width:26px;height:26px;border-radius:50%;object-fit:cover;border:1px solid var(--line);flex:none}
.lm-auth{font-size:.8rem;font-weight:600;color:var(--text)}
.lm-foot .lm-yr{margin-left:auto}
#highlights,#all-publications,#recent-papers,#first-galaxies,#first-black-holes,#galaxy-growth,#reionization,#unicorn,#surveys{scroll-margin-top:80px}

/* ---------- RESEARCH page map (jump nav under hero) ---------- */
.page-map{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.8rem}
.page-map a{font-size:.8rem;color:var(--muted);border:1px solid var(--line);padding:.45rem .95rem;border-radius:2rem;transition:border-color .2s,color .2s}
.page-map a:hover{border-color:var(--amber);color:var(--amber)}

/* ---------- per-theme paper lists ---------- */
.theme-papers{list-style:none;margin:1.1rem 0 0;border-top:1px solid var(--line)}
.theme-papers li{display:flex;gap:.7rem;padding:.5rem 0;border-bottom:1px solid var(--line);font-size:.88rem;line-height:1.4}
.theme-papers li .ty{flex:none;font-family:'Fraunces',serif;color:var(--muted);font-size:.85rem}
.theme-papers li a{border-bottom:none}
.theme-papers li a:hover{color:var(--amber)}
.theme-more{display:inline-block;margin-top:.9rem;color:var(--amber);font-weight:600;font-size:.85rem}

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