styles.css

/* ============================================================
   Pavan Dharma Adapa — portfolio
   Hand-written CSS. No framework, no external fonts, no CDN.
   Rebuilt 2026-08-26: warm light base, editorial serif display,
   asymmetric hero, work as a numbered list rather than a card grid.
   ============================================================ */

:root{
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "Times New Roman", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --max: 1120px;
  --t: 200ms cubic-bezier(.22,.61,.36,1);

  /* warm paper, not clinical white */
  --paper:#faf9f6;  --paper-2:#f3f1ec;  --card:#fffefb;
  --line:#e6e2d9;   --line-2:#d3cec2;
  --ink:#16191c;    --ink-2:#3f474e;    --muted:#6b7280;
  --accent:#0f5f57; --accent-2:#0b423d; --accent-soft:#e8f1ef;
  --gold:#8a6d3b;
  --shadow: 0 1px 2px rgba(30,26,20,.04), 0 12px 34px rgba(30,26,20,.07);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#101314; --paper-2:#161a1c; --card:#171c1e;
    --line:#252c2f;  --line-2:#36403f;
    --ink:#eceae4;   --ink-2:#bcc3c2;   --muted:#8d9794;
    --accent:#6bc7b6; --accent-2:#9adbcd; --accent-soft:rgba(107,199,182,.12);
    --gold:#c9a86a;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 14px 38px rgba(0,0,0,.34);
  }
}
:root[data-theme="dark"]{
  --paper:#101314; --paper-2:#161a1c; --card:#171c1e;
  --line:#252c2f;  --line-2:#36403f;
  --ink:#eceae4;   --ink-2:#bcc3c2;   --muted:#8d9794;
  --accent:#6bc7b6; --accent-2:#9adbcd; --accent-soft:rgba(107,199,182,.12);
  --gold:#c9a86a;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 14px 38px rgba(0,0,0,.34);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
body{margin:0;background:var(--paper);color:var(--ink);
  font:17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
@media(max-width:600px){.wrap{padding:0 20px}}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:14px;top:14px;z-index:99;background:var(--card);padding:11px 18px;border-radius:10px;border:1px solid var(--line)}
img{max-width:100%;display:block}

/* ---------- header ---------- */
.site{position:sticky;top:0;z-index:30;
  background:color-mix(in srgb,var(--paper) 82%,transparent);
  backdrop-filter:saturate(1.7) blur(12px);border-bottom:1px solid var(--line)}
.site .wrap{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:flex;align-items:center;gap:11px;margin-right:auto;text-decoration:none;color:var(--ink)}
.brand img{width:32px;height:32px;border-radius:50%;object-fit:cover;
  border:1px solid var(--line-2)}
.brand b{font:600 15.5px/1 var(--sans);letter-spacing:-.01em}
.brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px;letter-spacing:.02em}
.site nav{display:flex;gap:26px}
.site nav a{color:var(--ink-2);text-decoration:none;font-size:14.5px;transition:color var(--t)}
.site nav a:hover{color:var(--accent)}
/* Below 800px the nav used to be display:none with nothing in its place, so
   Experience/Skills/Education were unreachable except by scrolling the whole
   page. It now becomes a horizontally scrollable strip: no JS, no toggle
   state to get stuck, nothing that can fail. */
@media(max-width:800px){
  .site .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:0;gap:12px}
  .brand span span{display:none}
  .site nav{order:3;flex:1 0 100%;gap:0;overflow-x:auto;scrollbar-width:none;
    -webkit-overflow-scrolling:touch;margin:0 -20px;padding:0 20px;
    border-top:1px solid var(--line)}
  .site nav::-webkit-scrollbar{display:none}
  .site nav a{white-space:nowrap;padding:13px 14px;font-size:14px}
}
.themeb{border:1px solid var(--line);background:var(--card);color:var(--ink-2);
  width:36px;height:36px;border-radius:10px;cursor:pointer;display:grid;place-items:center;transition:var(--t)}
.themeb:hover{border-color:var(--line-2);color:var(--ink)}

/* ---------- hero ---------- */
.hero{padding:88px 0 0}
.hero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:60px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:38px}}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin:0 0 24px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft)}
h1{font:400 clamp(40px,6.4vw,68px)/1.04 var(--serif);letter-spacing:-.022em;margin:0 0 26px;color:var(--ink)}
h1 em{font-style:italic;color:var(--accent)}
.lede{font-size:clamp(17.5px,2vw,20px);line-height:1.6;color:var(--ink-2);max-width:56ch;margin:0 0 16px}
.lede b{color:var(--ink);font-weight:600}
.sub{font-size:15.5px;color:var(--muted);max-width:58ch;margin:0 0 32px;line-height:1.65}

/* figure carries a UA margin of 1em 40px, which was eating 80px of the column */
.portrait{position:relative;justify-self:center;margin:0}
/* height:auto is required or the height="800" attribute wins over aspect-ratio */
.portrait img{width:min(310px,72vw);height:auto;aspect-ratio:1;object-fit:cover;border-radius:22px;
  box-shadow:var(--shadow);border:1px solid var(--line)}
.portrait::after{content:"";position:absolute;inset:-14px -14px 26px 26px;border-radius:26px;
  border:1px solid var(--line-2);z-index:-1}

.cta{display:flex;flex-wrap:wrap;gap:11px;margin-bottom:18px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:11px;
  border:1px solid var(--line);background:var(--card);color:var(--ink);
  text-decoration:none;font-size:15px;font-weight:530;transition:var(--t)}
.btn:hover{border-color:var(--line-2);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
:root[data-theme="dark"] .btn-primary,
:root:not([data-theme="light"]) .btn-primary{color:#0d1a18}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]) .btn-primary{color:#fff}}
.btn-primary:hover{background:var(--accent-2);border-color:var(--accent-2)}
.cvline{font-size:14px;color:var(--muted);margin:0}
/* Two resume lines now (health/research and data/software). .cvline is margin:0,
   so without this they collide. */
.cvline + .cvline{margin-top:6px}
.cvline a{margin-right:16px;white-space:nowrap;display:inline-block}
/* On a phone these were 23px tall — under the 44px tap-target guideline, and
   they are the most important action on the page. */
@media(max-width:600px){
  .cvline{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
  .cvline a{margin-right:0;min-height:44px;display:inline-flex;align-items:center;
    padding:0 14px;border:1px solid var(--line);border-radius:10px;background:var(--card)}
}

/* ---------- proof ---------- */
.proof{margin-top:66px;padding:30px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.proof-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:30px}
.stat .n{font:400 clamp(27px,3.6vw,36px)/1 var(--serif);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--ink)}
.stat .l{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.45}

/* ---------- sections ---------- */
/* The sticky header is 64px. Section padding happens to absorb it today, but
   that is luck, not design - make it explicit. */
section[id],#top{scroll-margin-top:80px}
section{padding:82px 0}
.sec-h{margin-bottom:14px}
.sec-h .k{font-size:12.5px;font-weight:650;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:12px}
.sec-h h2{font:400 clamp(27px,3.4vw,38px)/1.15 var(--serif);letter-spacing:-.02em;margin:0}
.sec-intro{font-size:17px;color:var(--ink-2);max-width:62ch;margin:14px 0 42px;line-height:1.65}

/* ---------- work: numbered editorial entries ---------- */
.work{display:grid;gap:0}
.entry{display:grid;grid-template-columns:64px 1fr;gap:30px;
  padding:40px 0;border-top:1px solid var(--line)}
.entry:first-child{border-top:none;padding-top:6px}
@media(max-width:760px){.entry{grid-template-columns:1fr;gap:14px}}
.entry .idx{font:400 26px/1 var(--serif);color:var(--line-2);padding-top:6px;font-variant-numeric:tabular-nums}
.entry h3{font:600 22px/1.3 var(--sans);letter-spacing:-.015em;margin:0 0 6px}
.entry .src{font:400 12.5px/1.5 var(--mono);color:var(--muted);margin:0 0 16px}
.entry .what{color:var(--ink-2);margin:0 0 20px;max-width:70ch;font-size:16.5px}
.entry .what b{color:var(--ink);font-weight:600}
.finding{background:var(--accent-soft);border-left:3px solid var(--accent);
  padding:16px 20px;border-radius:0 10px 10px 0;margin:0 0 18px;font-size:16px;line-height:1.6;max-width:72ch}
.finding b{font-variant-numeric:tabular-nums;color:var(--ink)}
.limit{font-size:14.5px;color:var(--muted);margin:0 0 20px;padding-left:18px;
  border-left:2px solid var(--line-2);line-height:1.6;max-width:70ch}
.limit b{color:var(--ink-2);font-weight:600}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 20px;padding:0;list-style:none}
.tags li{font:400 12px/1.6 var(--mono);color:var(--muted);
  background:var(--paper-2);border:1px solid var(--line);padding:3px 10px;border-radius:7px}
.links{display:flex;flex-wrap:wrap;gap:10px;margin:0}
.links a{font-size:14px;padding:9px 17px;border-radius:10px;text-decoration:none;
  border:1px solid var(--line);color:var(--ink);background:var(--card);font-weight:530;transition:var(--t)}
.links a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.links a.live{background:var(--accent);border-color:var(--accent);color:#fff}
:root[data-theme="dark"] .links a.live,
:root:not([data-theme="light"]) .links a.live{color:#0d1a18}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]) .links a.live{color:#fff}}
.links a.live:hover{background:var(--accent-2);border-color:var(--accent-2)}

/* ---------- experience ---------- */
.roles-list{display:grid}
.role{display:grid;grid-template-columns:184px 1fr;gap:34px;padding:32px 0;border-top:1px solid var(--line)}
.role:first-child{border-top:none;padding-top:6px}
@media(max-width:760px){.role{grid-template-columns:1fr;gap:8px}}
.role .when{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:5px}
.role h3{font:600 18.5px/1.35 var(--sans);margin:0 0 4px;letter-spacing:-.012em}
.role .org{font-size:15px;color:var(--accent);margin:0 0 14px}
.role ul{margin:0;padding-left:20px;color:var(--ink-2);font-size:16px}
.role li{margin-bottom:9px}
.role li b{color:var(--ink);font-variant-numeric:tabular-nums;font-weight:600}

/* ---------- skills ---------- */
.skills{display:grid;grid-template-columns:repeat(auto-fit,minmax(262px,1fr));gap:20px}
.skill{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px}
.skill h3{font-size:12.5px;font-weight:650;letter-spacing:.07em;text-transform:uppercase;
  color:var(--muted);margin:0 0 14px}
.skill ul{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:7px}
.skill li{font-size:14px;color:var(--ink-2);background:var(--paper-2);
  border:1px solid var(--line);padding:5px 11px;border-radius:8px}
.note{grid-column:1/-1;font-size:14.5px;color:var(--muted);background:transparent;
  border:1px dashed var(--line-2);border-radius:14px;padding:18px 22px;line-height:1.65}
.note b{color:var(--ink-2)}

/* ---------- education ---------- */
.edu-row{display:grid;grid-template-columns:184px 1fr;gap:34px;align-items:baseline;
  padding:18px 0;border-top:1px solid var(--line)}
.edu-row:first-child{border-top:none}
@media(max-width:760px){.edu-row{grid-template-columns:1fr;gap:4px}}
.edu-row .when{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.edu-row b{font-weight:600;font-size:17px}
.edu-row .org{color:var(--ink-2);font-size:15.5px;margin-top:2px}
.pub{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:24px;margin-top:26px;line-height:1.65}
.pub .tag{display:inline-block;font-size:11.5px;font-weight:650;letter-spacing:.07em;
  text-transform:uppercase;color:var(--gold);border:1px solid color-mix(in srgb,var(--gold) 40%,transparent);
  padding:3px 10px;border-radius:7px;margin-bottom:12px}
.pub .title{font:400 19px/1.4 var(--serif);color:var(--ink);margin-bottom:8px}
.pub .authors{color:var(--ink-2);font-size:15px}
.pub .authors u{text-decoration:none;font-weight:650;color:var(--ink)}

/* ---------- contact ---------- */
.contact{background:var(--card);border:1px solid var(--line);border-radius:22px;
  padding:60px 48px;text-align:center;box-shadow:var(--shadow)}
.contact h2{font:400 clamp(26px,3.4vw,36px)/1.2 var(--serif);letter-spacing:-.02em;margin:0 0 16px}
.contact p{color:var(--ink-2);max-width:54ch;margin:0 auto 30px;font-size:16.5px}
.contact .cta{justify-content:center;margin-bottom:0}
@media(max-width:600px){.contact{padding:40px 24px}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:34px 0 54px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}
footer a{color:var(--muted)}
footer a:hover{color:var(--accent)}