/* === self-hosted fonts (Inter, Space Grotesk; SIL OFL) — generated by build tooling === */
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/inter-latinext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url(fonts/inter-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:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/inter-latinext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/inter-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:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/inter-latinext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/inter-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:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url(fonts/inter-latinext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url(fonts/inter-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:'Space Grotesk';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/space-grotesk-latinext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:500;font-display:swap;src:url(fonts/space-grotesk-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:'Space Grotesk';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/space-grotesk-latinext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:600;font-display:swap;src:url(fonts/space-grotesk-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:'Space Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url(fonts/space-grotesk-latinext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url(fonts/space-grotesk-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}
/* === end self-hosted fonts === */

/* ---- Design tokens (dark theme) ---- */
:root{
  --bg:#2f2f2f;            /* page/content body (lighter) */
  --bg-alt:#3a3a3a;        /* elevated surfaces: cards, tiles, chips */
  --chrome:#262625;        /* darker menu + footer (contrasts with the body) */
  --ink:#d6d1c7;           /* main titles (brightest) */
  --ink-soft:#c3beb4;      /* body + most text */
  --muted:#a8a299;         /* secondary text: dates, authors, lede, breadcrumb */
  --line:rgba(255,255,255,.12);   /* hairline borders */
  --sep:rgba(255,255,255,.28);    /* white separator line under sticky bars */
  --accent:#e68c46; --accent-700:#eea163;   /* soft orange */
  --radius:14px; --shadow:0 1px 2px rgba(0,0,0,.35),0 12px 28px rgba(0,0,0,.35);
  --maxw:1080px;
  --font:'Inter',ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --display:'Space Grotesk',var(--font);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink-soft);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
main{flex:1 0 auto}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:none}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em;color:var(--ink-soft);font-family:var(--display)}
.brand,.kicker,.hub-label,.sectile-label{font-family:var(--display)}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.narrow{max-width:760px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:#3a3a3a;color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}

/* ---- Header / nav ---- */
.navtoggle{position:absolute;opacity:0;pointer-events:none}
.site-header{position:sticky;top:0;z-index:50;background:var(--chrome);border-bottom:1px solid var(--sep)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:10px}
.brand{font-weight:800;font-size:1.12rem;color:var(--ink-soft);letter-spacing:-.02em;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.brand:hover{text-decoration:none}
.mainnav ul{list-style:none;display:flex;gap:6px;margin:0;padding:0}
.mainnav a{display:inline-block;padding:9px 13px;border-radius:9px;color:var(--ink-soft);font-size:.93rem;font-weight:550}
.mainnav a:hover{background:rgba(255,255,255,.06);text-decoration:none;color:var(--accent)}
.mainnav a.active{color:var(--accent);background:rgba(230,140,70,.15)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:var(--ink-soft);border-radius:2px;transition:.2s}

/* ---- Hero ---- */
.hero{background:var(--bg);color:var(--ink-soft);padding:96px 0 28px}
.hero .kicker{text-transform:uppercase;letter-spacing:.18em;font-size:.78rem;font-weight:700;color:var(--accent);margin:0 0 14px}
.hero h1{font-size:clamp(2.3rem,6vw,3.7rem);margin:0;color:var(--ink)}
.hero .tagline{font-size:clamp(1.05rem,2.6vw,1.4rem);color:var(--ink-soft);margin:20px 0 32px;font-weight:500}
.hero .tagline .tag-line{display:block;line-height:1.85}
.hero .tagline .tag-pipe{color:var(--accent);font-weight:700;margin-right:.5em}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
/* Landing portrait: keep the original .jpg, feather its grey backdrop into the
   page so it blends with the dark background instead of reading as a light box. */
/* theme-orange fills the WHOLE image background behind the transparent cutout,
   clean rectangular edges (no blur, no circle). */
.lead-photo-wrap{display:block;width:230px;margin:6px auto 28px;
  background:rgba(230,140,70,.24);border-radius:8px;overflow:hidden}
.lead-photo{display:block;width:100%;height:auto;opacity:.95;filter:grayscale(.12) contrast(.99)}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:10px;font-size:.9rem;font-weight:600;border:1px solid var(--line);background:var(--bg-alt);color:var(--ink-soft);transition:.15s;cursor:pointer}
/* publication buttons: faint orange tint + standard text, no border; hover fills to solid orange */
.btn-primary{background:rgba(230,140,70,.15);border-color:transparent;color:var(--ink-soft)}
.btn-pdf{background:var(--bg-alt);border-color:var(--line);color:var(--ink-soft)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:var(--line);color:var(--ink-soft)}
/* hover effects gated to real-hover (mouse) devices so a TAP on touch doesn't latch the
   orange "pressed" state until you tap elsewhere — same fix as the jump-nav / back-to-top */
@media (hover:hover){
  .btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow);border-color:var(--accent)}
  .btn-primary:hover{background:var(--accent);border-color:var(--accent);color:#241a10}
  .btn-ghost:hover{background:rgba(255,255,255,.12)}
}

/* ---- Sections ---- */
.section{padding:66px 0}
.section-alt{background:#383838;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;color:var(--accent);font-weight:700;margin:0 0 18px}
.page-title + .eyebrow{margin-top:26px}   /* gap after the page title (e.g. Research) like the title->bubbles gap */
.bio{margin-top:28px}   /* clear the jump-nav separator above the bio on About */
.bio p{color:var(--ink-soft);font-size:1.06rem;margin:0 0 18px}
.bio-list{margin:6px 0 18px;padding-left:1.25em;color:var(--ink-soft);font-size:1.06rem}
.bio-list li{margin:5px 0}
.bio-list li::marker{color:var(--accent)}
.page-title{font-size:clamp(1.9rem,5vw,2.6rem);margin:0 0 8px;color:var(--ink)}
/* when cards follow the title directly (no blurb/jump-nav), match the blurb pages' gap */
.page-title + .cards{margin-top:34px}
.lede{color:var(--muted);font-size:1.05rem;margin:0 0 34px}

/* ---- Bio sub-headings (About page) ---- */
.bio-head{text-transform:uppercase;letter-spacing:.13em;font-size:.82rem;font-weight:700;color:var(--accent);margin:34px 0 6px}

/* ---- Home intro teaser ---- */
.section .narrow .lead-intro{font-size:1.06rem;color:var(--ink-soft);margin:0 0 16px}
.read-more a{font-weight:600;color:var(--accent)}

/* ---- Research hub cards + breadcrumb ---- */
.hubgrid{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin:0 0 30px}
.hubcard{flex:1 1 230px;max-width:360px;display:flex;flex-direction:column;gap:8px;padding:22px;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);transition:.15s}
.hubcard:hover{text-decoration:none;border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}
.hubgrid-solo .hubcard{max-width:none}
.hub-label{font-size:1.12rem;font-weight:700;color:var(--ink-soft)}
.hub-count{color:var(--ink-soft);font-size:.9rem;font-weight:600}
.eyebrow-mt{margin-top:32px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:7px;font-size:.85rem;margin:0 0 16px;color:var(--muted)}
.breadcrumb a{color:var(--muted);font-weight:500}
.breadcrumb a:hover{color:var(--accent);text-decoration:none}
.breadcrumb .bc-current{color:var(--ink-soft);font-weight:600}
.bc-sep{color:var(--muted);opacity:.6;font-size:.95rem}

/* ---- Section tiles (home) ---- */
.sectiles{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.sectile{flex:1 1 220px;max-width:360px;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px 22px;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);font-weight:650;color:var(--ink-soft);transition:.15s}
.sectile:hover{text-decoration:none;border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}
.sectile-label{font-size:1.06rem}
.sectile-go{color:var(--accent);font-size:.9rem;font-weight:600}

/* ---- Publication cards ---- */
.cards{display:grid;gap:16px}
.card{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;transition:.15s}
.card:hover{box-shadow:var(--shadow);border-color:var(--accent)}
.card-meta time{font-size:.82rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.card-title{font-size:1.2rem;margin:6px 0 6px}
.card-title a{color:var(--ink-soft)}
.card-title a:hover{color:var(--accent)}
.card-authors{color:var(--muted);font-size:.94rem;margin:0 0 16px}
.card-authors-tight{margin-bottom:6px}
.card-detail{color:var(--muted);font-size:.87rem;line-height:1.5;margin:0}
.card-venue{color:var(--muted);font-size:.94rem;margin:-8px 0 14px}
.card.talk .card-meta{color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;font-size:.82rem}
/* talk abstract expander (native <details>, no JS) */
.card.talk .abstract{margin-top:10px}
.card summary{cursor:pointer;color:var(--accent);font-weight:600;font-size:.92rem;list-style:none;display:inline-flex;align-items:center;gap:7px;padding:2px 0;user-select:none}
.card summary::-webkit-details-marker{display:none}
.card summary::before{content:"▸";font-size:.78em;transition:transform .15s ease}
.card details[open] summary::before{transform:rotate(90deg)}
.card summary:hover{text-decoration:underline}
.card summary .less{display:none}
.card details[open] summary .more{display:none}
.card details[open] summary .less{display:inline}
.card .details{margin-top:8px}
.abstract-body{margin-top:10px}
.abstract-body p{color:var(--ink-soft);font-size:.97rem;margin:0 0 12px}
.abstract-body p:last-child{margin-bottom:0}
.card-actions{display:flex;gap:10px;flex-wrap:wrap}
/* vertical list inside a card (e.g. reviewer venues) */
.card-list{list-style:none;margin:8px 0 0;padding:0}
.card-list li{padding:8px 0;color:var(--ink-soft);font-size:.95rem;border-top:1px solid var(--line)}
.card-list li:first-child{border-top:0;padding-top:0}
/* accomplishment bullets (employment history) */
.bullets{margin:12px 0 0;padding-left:20px;color:var(--ink-soft)}
.bullets li{margin:0 0 8px;font-size:.95rem;line-height:1.55}
.bullets li:last-child{margin-bottom:0}
#bio,#explore{scroll-margin-top:120px}
#top{scroll-margin-top:78px}

/* sticky in-page jump-nav for multi-section pages (no JS) — same color as body + white separator line */
.jumpnav{position:sticky;top:64px;z-index:20;display:flex;flex-wrap:wrap;gap:8px;background:var(--bg);padding:12px 0;margin:0 0 4px;border-bottom:1px solid var(--sep)}
.jumpnav a{font-size:.84rem;font-weight:600;color:var(--ink-soft);padding:6px 13px;border-radius:999px;background:var(--bg-alt);border:1px solid var(--line)}
@media (hover:hover){.jumpnav a:hover,.jumpnav-m-list a:hover{color:var(--accent);border-color:var(--accent)}}
/* ---- Floating back-to-top button (visibility toggled by build.py's scroll script) ---- */
#backtotop{position:fixed;right:22px;bottom:22px;z-index:60;width:46px;height:46px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(230,140,70,.15);border:1px solid transparent;color:var(--ink-soft);font-size:1.35rem;line-height:1;text-decoration:none;box-shadow:var(--shadow);opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .25s,transform .25s,background .15s,color .15s}
#backtotop.show{opacity:1;transform:none;pointer-events:auto}
@media (hover:hover){#backtotop:hover{background:var(--accent);color:#241a10}}
/* mobile (<=760px): collapse the jump-nav row into an "On this page" disclosure */
.jumpnav-m{display:none}
@media (max-width:760px){
  .jumpnav{display:none}
  .jumpnav-m{display:block;position:sticky;top:64px;z-index:30;margin:0 0 4px;padding:8px 0;background:var(--bg);border-bottom:1px solid var(--sep)}
  .jumpnav-m summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:8px;font-size:.9rem;font-weight:700;color:var(--ink-soft);padding:6px 2px}
  .jumpnav-m summary::-webkit-details-marker{display:none}
  .jumpnav-m summary::after{content:"▾";font-size:.8rem;color:var(--muted)}
  .jumpnav-m details[open] summary::after{content:"▴"}
  .jumpnav-m-list{display:flex;flex-direction:column;gap:5px;padding:10px 0 2px}
  .jumpnav-m-list a{font-size:.92rem;font-weight:600;color:var(--ink-soft);padding:9px 13px;border-radius:10px;background:var(--bg-alt);border:1px solid var(--line)}
}

/* sub-headings within a section (groups, Invited talks) */
.subhead{font-size:1.62rem;margin:46px 0 18px;scroll-margin-top:128px;color:var(--ink-soft)}
.plainlist{margin:0;padding-left:20px;color:var(--ink-soft)}
.plainlist li{margin:0 0 10px;line-height:1.55}

/* Invited talks: clean two-line entries (title / venue) */
.invited-list{list-style:none;margin:0;padding:0}
.invited-list li{display:flex;flex-direction:column;gap:3px;padding:14px 4px;border-bottom:1px solid var(--line)}
.invited-list .inv-title{font-weight:650;color:var(--ink-soft)}
.invited-list .inv-place{color:var(--muted);font-size:.92rem}

/* CV-style lists (awards / engagements / service) */
.cv-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.cv-item{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding:15px 4px;border-bottom:1px solid var(--line)}
.cv-main{display:flex;flex-direction:column;gap:3px}
.cv-title{font-weight:650;color:var(--ink-soft)}
.cv-sub{color:var(--muted);font-size:.92rem}
.cv-meta{color:var(--muted);font-size:.86rem;white-space:nowrap;font-weight:600}
@media (max-width:560px){.cv-item{flex-direction:column;gap:4px}.cv-meta{white-space:normal}}

/* ---- Footer ---- */
.site-footer{background:var(--chrome);color:var(--ink-soft);padding:46px 0;margin-top:0;border-top:1px solid var(--line)}
.site-footer a{color:var(--accent)}
.site-footer .ft-copy{color:var(--muted);font-size:.85rem;margin:14px 0 0}
/* footer Explore nav (label + links below) */
.ft-explore{margin:0 0 30px;padding:0 0 26px;border-bottom:1px solid var(--line)}
.ft-explore-label{font-family:var(--display);text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;font-weight:700;color:var(--accent);margin:0 0 12px}
.site-footer .ft-explore a{display:block;width:fit-content;color:var(--ink-soft);padding:4px 0;font-size:.92rem;font-weight:500}
.site-footer .ft-explore a:hover{color:var(--accent)}

/* ---- Responsive ---- */
@media (max-width:760px){
  .hamburger{display:flex}
  .mainnav{position:fixed;inset:64px 0 auto 0;background:var(--chrome);border-bottom:1px solid var(--line);transform:translateY(-130%);transition:transform .25s ease;box-shadow:var(--shadow);max-height:calc(100vh - 64px);max-height:calc(100dvh - 64px);overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
  .mainnav ul{flex-direction:column;gap:0;padding:8px 14px 16px}
  .mainnav a{display:block;padding:13px 10px;border-radius:8px;font-size:1rem}
  .navtoggle:checked ~ header .mainnav{transform:translateY(0)}
  .section{padding:48px 0}
  .hero{padding:70px 0 24px}
  .brand{font-size:1rem}
}