/* =====================================================================
   Pallavi Surana — site styles
   You normally DON'T need to touch this file. Change text in index.html.
   To recolor the site, edit the values under :root just below.
   ===================================================================== */

:root{
  --paper:#FBFAF6;      /* page background            */
  --ink:#20242E;        /* main text                  */
  --ink-soft:#565B69;   /* secondary / muted text     */
  --accent:#1F7A63;     /* links + accents (pine/teal)*/
  --accent-deep:#12594A;
  --ochre:#B26B2E;      /* hover accent               */
  --line:#E7E5DC;       /* thin divider lines         */
  --track:#1F7A63;      /* decorative bar strip       */
}

/* ---------- base ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"EB Garamond",Garamond,Georgia,serif;
  font-size:19px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .15s,color .15s}
a:hover{color:var(--accent-deep);border-bottom-color:var(--ochre)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

.wrap{max-width:760px;margin:0 auto;padding:0 26px}

/* small uppercase label used for eyebrow + section titles */
.label{font-size:13px;font-weight:500;letter-spacing:2.5px;text-transform:uppercase;color:var(--accent)}

/* ---------- top navigation ---------- */
header{position:sticky;top:0;z-index:20;background:rgba(251,250,246,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:60px}
nav .brand{font-weight:600;font-size:21px;letter-spacing:.3px;border:0}
nav ul{display:flex;gap:24px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
nav ul a{font-size:16px;color:var(--ink-soft);border:0}
nav ul a:hover{color:var(--accent)}
@media(max-width:640px){nav .brand{display:none}nav{justify-content:center}}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:150px 1fr;gap:36px;align-items:center;padding:64px 0 32px}
.hero img.photo{width:150px;height:150px;object-fit:cover;border-radius:50%;border:1px solid var(--line)}
.hero .eyebrow{margin:0 0 10px}
h1{font-weight:600;font-size:48px;line-height:1.02;margin:0 0 10px;letter-spacing:-.3px}
.role{font-size:20px;font-style:italic;color:var(--ink-soft);margin:0 0 18px}
.socials{display:flex;gap:20px;flex-wrap:wrap;font-size:16px}
.socials a{border:0}
@media(max-width:640px){
  .hero{grid-template-columns:1fr;text-align:center;gap:22px;padding-top:44px}
  .hero img.photo{margin:0 auto}
  h1{font-size:38px}
  .socials{justify-content:center}
}

/* ---------- decorative expression track ---------- */
.track{margin:6px 0 2px}
.track .bars{display:flex;align-items:flex-end;gap:3px;height:30px}
.track .bars span{flex:1;background:var(--track);opacity:.18;border-radius:1px 1px 0 0}
.track .cap{font-size:11px;font-weight:500;letter-spacing:2px;text-transform:uppercase;color:var(--ink-soft);opacity:.65;margin-top:7px}

/* ---------- sections ---------- */
section{padding:40px 0;border-top:1px solid var(--line)}
section:first-of-type{border-top:0}
h2{margin:0 0 20px}
p{margin:0 0 16px}
.lead{font-size:21px}

/* ---------- news: scrollable list ---------- */
.news-box{max-height:250px;overflow-y:auto;border:1px solid var(--line);border-radius:10px;padding:4px 18px;background:#fff}
.news-box::-webkit-scrollbar{width:8px}
.news-box::-webkit-scrollbar-thumb{background:#d7d5ca;border-radius:8px}
.news{list-style:none;margin:0;padding:0}
.news li{display:grid;grid-template-columns:104px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.news li:last-child{border-bottom:0}
.news .when{font-size:15px;font-weight:500;color:var(--accent);letter-spacing:.3px}
@media(max-width:560px){.news li{grid-template-columns:1fr;gap:2px}}

/* ---------- video embeds ---------- */
.videos{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.vid{margin:0}
.vid .frame{position:relative;padding-top:56.25%;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.vid iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.vid figcaption{font-size:16px;color:var(--ink-soft);margin-top:9px;font-style:italic}
@media(max-width:640px){.videos{grid-template-columns:1fr}}

/* ---------- buttons + notes ---------- */
.btn{display:inline-block;font-size:16px;letter-spacing:.3px;padding:9px 20px;border:1px solid var(--accent);border-radius:8px;color:var(--accent)}
.btn:hover{background:var(--accent);color:#fff;border-bottom-color:var(--accent)}
.note{background:#FFF9EF;border:1px dashed var(--ochre);border-radius:8px;padding:12px 16px;font-size:16px;color:#7a4a15}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:30px 0 48px;color:var(--ink-soft);font-size:15px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ---------- research projects ---------- */
.project{padding:26px 0;border-bottom:1px solid var(--line)}
.project:last-child{border-bottom:0;padding-bottom:6px}
.project:first-of-type{padding-top:0}
.project h3{font-size:24px;font-weight:600;margin:0 0 8px;letter-spacing:-.2px}
.project p{margin:0 0 16px}
.project .fig{margin:0 0 14px}
.project .fig a{display:block;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.project .fig img{display:block;width:100%;height:auto}
.project .links{display:flex;gap:18px;flex-wrap:wrap;font-size:16px;margin:0}
.project .links a{border:0;font-weight:500}
.project .links a:hover{border-bottom:1px solid var(--ochre)}