/* ============================================================
   arohan-agate.github.io — stylesheet  (Rail layout)
   ------------------------------------------------------------
   Two-pane layout: a fixed left sidebar (identity + nav) and a
   scrolling content pane. Content edits live in index.html; to
   retune the look start with the design tokens in :root below.
   ============================================================ */

/* ------------------------------------------------------------
   Self-hosted fonts (variable woff2 from Google Fonts).
   latin-ext subsets only download if the page uses those
   characters, thanks to unicode-range.
   ------------------------------------------------------------ */
@font-face{
  font-family:"Inter";font-style:normal;font-weight:400 700;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:"Inter";font-style:normal;font-weight:400 700;font-display:swap;
  src:url("../fonts/inter-latin-ext.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:"JetBrains Mono";font-style:normal;font-weight:400 500;font-display:swap;
  src:url("../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;
}
@font-face{
  font-family:"JetBrains Mono";font-style:normal;font-weight:400 500;font-display:swap;
  src:url("../fonts/jetbrains-mono-latin-ext.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;
}

/* ------------------------------------------------------------
   Design tokens
   (--faint is darkened from the mockup #8b909b -> #6b707e so
   small labels/dates pass WCAG AA 4.5:1 on the page background.)
   ------------------------------------------------------------ */
:root{
  --bg:#fbfbfc;        /* page background */
  --ink:#15171d;       /* primary text */
  --soft:#565b66;      /* secondary text */
  --faint:#6b707e;     /* nav, dates, captions */
  --line:#e7e8ec;      /* borders */
  --line2:#f0f1f4;     /* hairline dividers */
  --accent:#2f54eb;    /* links + active nav */
  --accent-soft:#c5d0fb;
  --accent-bg:#eef2fe;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
}

/* ------------------------------------------------------------
   Base
   ------------------------------------------------------------ */
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}
img{display:block;max-width:100%}
::selection{background:rgba(47,84,235,.16)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}

/* ------------------------------------------------------------
   Two-pane shell
   ------------------------------------------------------------ */
.layout{display:grid;grid-template-columns:312px 1fr;max-width:1180px;margin:0 auto;min-height:100vh}

/* ---- left sidebar (identity + nav) ---- */
.rail{
  position:sticky;top:0;align-self:start;height:100vh;
  padding:54px 40px;border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:26px;overflow:auto;
}
.photo{width:92px;height:92px;border-radius:50%;object-fit:cover;border:1px solid var(--line)}
.rail h1{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;line-height:1.1}
.rail .blurb{font-size:.85rem;color:var(--soft);line-height:1.5;margin-top:8px}
.rail .blurb em{font-style:normal;color:var(--accent);font-weight:600}
.rail .blurb a{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent-soft)}
.social{display:flex;flex-direction:column;gap:2px;font-size:.86rem}
.social a{color:var(--soft);text-decoration:none;padding:4px 0;display:flex;align-items:center;gap:8px;transition:color .15s}
.social a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--line);transition:background .15s}
.social a:hover{color:var(--ink)}
.social a:hover::before{background:var(--accent)}
.toc{display:flex;flex-direction:column;gap:1px;margin-top:6px;font-size:.8rem;font-family:var(--mono);letter-spacing:.02em}
.toc a{color:var(--faint);text-decoration:none;padding:6px 12px;border-left:2px solid transparent;
  border-radius:0 6px 6px 0;transition:all .15s;text-transform:lowercase}
.toc a:hover{color:var(--ink);background:var(--line2)}
.toc a.active{color:var(--accent);border-left-color:var(--accent);background:var(--line2);font-weight:500}
.rail-foot{margin-top:auto;font-family:var(--mono);font-size:.66rem;color:var(--faint);letter-spacing:.04em}

/* ---- right content pane ---- */
.content{padding:64px 64px 120px;max-width:820px}
.content section{margin-bottom:64px;scroll-margin-top:40px}
.content h2{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--faint);margin-bottom:22px;font-weight:500}
.prose{color:var(--soft);max-width:64ch;margin-bottom:13px;font-size:1rem;line-height:1.65}
.lk{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent-soft)}
.lk:hover{border-color:var(--accent)}

/* ------------------------------------------------------------
   Publications
   ------------------------------------------------------------ */
.pub{display:grid;grid-template-columns:132px 1fr;gap:22px;padding:22px 0;border-top:1px solid var(--line2)}
.pub:first-of-type{border-top:none;padding-top:0}
.pthumb{aspect-ratio:4/3;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#f3f3f5}
.pthumb img{width:100%;height:100%;object-fit:cover}
.pbody h3{font-size:1.06rem;font-weight:650;letter-spacing:-.01em;line-height:1.25;margin-bottom:5px}
.pbody h3 a{text-decoration:none}
.pbody h3 a:hover{color:var(--accent)}
.auth{font-size:.88rem;color:var(--soft);margin-bottom:2px}
.auth b{color:var(--ink)}
.ven{font-size:.84rem;color:var(--faint);margin-bottom:9px}
.tag{font-family:var(--mono);font-size:.62rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-bg);padding:2px 7px;border-radius:20px;margin-left:6px}
.sum{font-size:.88rem;color:var(--soft);line-height:1.55;max-width:56ch;margin-bottom:11px}
.plinks{display:flex;flex-wrap:wrap;gap:7px;font-family:var(--mono);font-size:.72rem}
.plinks a,.soon{border:1px solid var(--line);padding:4px 10px;border-radius:6px;text-decoration:none;color:var(--soft)}
.plinks a:hover{border-color:var(--accent);color:var(--accent)}
.soon{border-style:dashed;color:var(--faint);cursor:default}

/* ------------------------------------------------------------
   Experience / Education / Teaching entries
   ------------------------------------------------------------ */
.ent{display:grid;grid-template-columns:1fr auto;gap:4px 24px;padding:15px 0;border-top:1px solid var(--line2)}
.ent:first-of-type{border-top:none}
.ent-h{font-weight:650;font-size:1rem}
.ent-h .muted{color:var(--soft);font-weight:400}
.ent-s{font-size:.9rem;color:var(--soft)}
.ent-d{grid-column:1;font-size:.86rem;color:var(--faint);margin-top:4px;line-height:1.5;max-width:60ch}
.ent-w{font-family:var(--mono);font-size:.72rem;color:var(--faint);text-align:right;white-space:nowrap}
.ent-w span{display:block;margin-top:3px}

/* ------------------------------------------------------------
   Contact
   ------------------------------------------------------------ */
.contact .prose a{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent-soft)}
.contact .prose a:hover{border-color:var(--accent)}

/* ------------------------------------------------------------
   Motion / print
   ------------------------------------------------------------ */
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.rail{position:static;height:auto;border-right:none}.layout{display:block}}

/* ------------------------------------------------------------
   Mobile: sidebar collapses to a top band, nav becomes a row
   ------------------------------------------------------------ */
@media (max-width:820px){
  .layout{grid-template-columns:1fr}
  .rail{position:static;height:auto;border-right:none;border-bottom:1px solid var(--line);
    flex-direction:column;padding:40px 28px 28px}
  .toc{flex-direction:row;flex-wrap:wrap}
  .toc a{border-left:none;border-radius:6px}
  .toc a.active{border-left:none}
  .content{padding:40px 28px 80px}
  .pub{grid-template-columns:1fr}
  .pthumb{max-width:210px}
  .ent{grid-template-columns:1fr}
  .ent-w{text-align:left}
}