/* ============================================================
   Hitanshu Pandit — matches the Google Sites template
   Rajdhani / Share Tech Mono hero · Merriweather brand
   EB Garamond body · particle network behind the page
   ============================================================ */

:root {
  --bg:        #ffffff;
  --strip:     #fdf6e3;
  --strip-tx:  #3b3524;
  --text:      #0d1b3e;
  --muted:     #6a90b8;
  --accent:    #1a73e8;
  --accent-dk: #2d6aad;
  --rule:      #dfe4ee;
  --surface:   #f7f8fa;
  --net:       26,115,232;

  --display: 'Rajdhani', 'Trebuchet MS', sans-serif;
  --mono:    'Share Tech Mono', ui-monospace, monospace;
  --serif:   'Merriweather', Georgia, serif;
  --body:    'EB Garamond', Garamond, Georgia, serif;

  --maxw: 760px;
}

:root[data-theme="dark"] {
  --bg:        #0c1020;
  --strip:     #1b1a12;
  --strip-tx:  #e8dfc4;
  --text:      #e9edf7;
  --muted:     #8fa6c6;
  --accent:    #6fa8f5;
  --accent-dk: #8fbbf7;
  --rule:      #242c42;
  --surface:   #141a2c;
  --net:       111,168,245;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #0c1020;
    --strip:     #1b1a12;
    --strip-tx:  #e8dfc4;
    --text:      #e9edf7;
    --muted:     #8fa6c6;
    --accent:    #6fa8f5;
    --accent-dk: #8fbbf7;
    --rule:      #242c42;
    --surface:   #141a2c;
    --net:       111,168,245;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 19px;
  font-weight: 400;
  line-height: 1.62;
}

/* --- particle network sits behind the whole page -------------- */

#hero-canvas {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
.hero-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(17,82,166,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17,82,166,.045) 1px, transparent 1px);
  background-size: 48px 48px;
}
:root[data-theme="dark"] .hero-grid { opacity: .5; }

.strip, .topbar, main, footer, .hero { position: relative; z-index: 2; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.wrap.wide { max-width: 1020px; }

/* --- cream job-market strip ----------------------------------- */

.strip {
  background: var(--strip); color: var(--strip-tx);
  text-align: center; padding: 13px 20px;
  font-size: 17px; font-weight: 600;
  border-bottom: 1px solid rgba(0,0,0,.05);
}
.strip a { color: inherit; }

/* --- header --------------------------------------------------- */

.topbar { background: var(--bg); border-bottom: 1px solid var(--rule); }
.topbar-inner {
  max-width: 1100px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; gap: 18px;
}
.brand {
  font-family: var(--serif); font-weight: 700; font-size: 19px;
  color: var(--text); text-decoration: none; margin-right: auto;
  white-space: nowrap; letter-spacing: -.2px;
}
.nav { display: flex; flex-wrap: wrap; gap: 4px; }
.nav a {
  font-family: var(--serif); font-size: 13px; font-weight: 400;
  color: var(--text); text-decoration: none;
  padding: 5px 10px; border-radius: 4px; white-space: nowrap;
}
.nav a:hover { color: var(--accent); }
.nav a[aria-current="page"] { font-weight: 700; border-bottom: 2px solid var(--accent); border-radius: 0; }

.theme-toggle {
  flex: none; width: 32px; height: 32px; border-radius: 50%; cursor: pointer;
  border: 1px solid var(--rule); background: transparent; color: var(--text);
  display: grid; place-items: center; font-size: 14px; line-height: 1;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* --- hero ----------------------------------------------------- */

.hero { text-align: center; padding: 46px 20px 10px; }
.hero h1 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(40px, 9vw, 86px); line-height: 1.05;
  letter-spacing: -1px; color: var(--text); margin: 0;
}
.hero-rule { width: 60px; height: 2px; margin: 14px auto;
  background: linear-gradient(90deg, transparent, var(--accent), transparent); }
.hero .role {
  font-family: var(--mono); font-size: clamp(14px, 2.6vw, 24px);
  color: var(--accent-dk); letter-spacing: 1px; margin: 0;
}
.hero .org {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(12px, 2vw, 18px); letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--muted); margin: 7px 0 0;
}
.portrait {
  display: block; margin: 30px auto 0;
  width: 72%; max-width: 420px;
  height: auto;            /* keep the real aspect ratio */
  aspect-ratio: 576 / 760;
  object-fit: cover;
  border-radius: 2px;
}


/* --- intro: photo left, bio right ---------------------------- */

.intro {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 34px;
  align-items: start;
  max-width: 980px;
  margin: 0 auto 10px;
}
.intro-photo { position: sticky; top: 86px; }
.intro .portrait {
  display: block; margin: 0;
  width: 100%; max-width: 300px;
  height: auto;
  aspect-ratio: 576 / 760;
  object-fit: cover;
  border-radius: 2px;
}
.intro-text > p:first-child { margin-top: 0; }

@media (max-width: 820px) {
  .intro { grid-template-columns: 1fr; gap: 22px; max-width: 760px; }
  .intro-photo { position: static; justify-self: center; }
  .intro .portrait { width: 72%; max-width: 320px; margin: 0 auto; }
}

/* --- body ----------------------------------------------------- */

main { padding: 34px 0 10px; }

.page-title {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(38px, 8vw, 72px); letter-spacing: -1px;
  text-align: center; margin: 10px 0 4px; color: var(--text);
}
.page-sub {
  font-family: var(--mono); font-size: 14px; color: var(--accent-dk);
  text-align: center; letter-spacing: 1px; margin: 0 0 32px;
}

h2.section {
  font-family: var(--display); font-size: 15px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; color: var(--muted);
  margin: 40px 0 14px; padding-bottom: 7px; border-bottom: 1px solid var(--rule);
}

p { margin: 0 0 18px; }
a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
main a, footer a { text-decoration-thickness: 1px; }

/* --- entries -------------------------------------------------- */

.entry { padding: 18px 0; border-bottom: 1px solid var(--rule); }
.entry:last-child { border-bottom: 0; }
.entry h3 { font-family: var(--serif); font-size: 17px; font-weight: 700;
  line-height: 1.5; margin: 0 0 7px; }
.entry .meta { font-family: var(--body); font-size: 17px; color: var(--muted); margin: 0 0 7px; }
.entry .meta a { color: var(--accent-dk); }
.tag {
  display: inline-block; font-family: var(--display); font-size: 11px; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase;
  padding: 2px 9px; border-radius: 20px; margin-right: 8px; vertical-align: 2px;
  background: rgba(var(--net), .1); color: var(--accent-dk);
  border: 1px solid rgba(var(--net), .3);
}
.links { font-family: var(--mono); font-size: 13px; margin-top: 8px; }
.links a { margin-right: 14px; color: var(--accent-dk); }

details.abs { margin-top: 8px; }
details.abs summary {
  cursor: pointer; font-family: var(--mono); font-size: 12.5px;
  color: var(--accent-dk); letter-spacing: .5px; width: fit-content;
}
details.abs[open] summary { margin-bottom: 9px; }
details.abs p { font-size: 18px; font-weight: 400; color: var(--text); opacity: .85; margin: 0; }

/* --- courses -------------------------------------------------- */

.course {
  border: 1px solid var(--rule); border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  padding: 15px 18px; margin-bottom: 12px;
}
.course h3 { font-family: var(--serif); font-size: 16px; font-weight: 700; margin: 0 0 3px; }
.course .where { font-family: var(--body); font-size: 17px; color: var(--muted); }
.course .term {
  float: right; font-family: var(--mono); font-size: 11.5px;
  letter-spacing: .5px; text-transform: uppercase; color: var(--accent-dk);
}

/* --- lists / buttons ------------------------------------------ */

ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain > li { padding: 12px 0; border-bottom: 1px solid var(--rule); }
ul.plain > li:last-child { border-bottom: 0; }
ul.plain .meta { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }

.buttons { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin: 28px 0 10px; }
.btn {
  font-family: var(--display); font-size: 15px; font-weight: 700;
  letter-spacing: .6px; padding: 9px 26px; border-radius: 3px; text-decoration: none;
  background: #1f3a63; color: #fff; border: 1px solid #1f3a63;
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--rule); }
.btn.ghost:hover { color: #fff; }

.socials { display:flex; flex-wrap:wrap; gap:22px; justify-content:center; margin:28px 0 6px; }
.socials a {
  display:grid; place-items:center; width:34px; height:34px;
  color:var(--muted); text-decoration:none; border-radius:50%;
  transition:color .15s ease, transform .15s ease;
}
.socials a svg { width:21px; height:21px; fill:currentColor; display:block; }
.socials a:hover { color:var(--accent); transform:translateY(-2px); }

/* --- footer --------------------------------------------------- */

footer {
  margin-top: 54px; border-top: 1px solid var(--rule);
  padding: 22px 0 44px; text-align: center;
  font-family: var(--mono); font-size: 12.5px; color: var(--muted);
}
footer a { color: var(--muted); margin: 0 10px; text-decoration: none; }
footer a:hover { color: var(--accent); }

@media (max-width: 620px) {
  body { font-size: 19px; }
  .brand { font-size: 16px; }
  .nav a { padding: 4px 7px; font-size: 12px; }
  .course .term { float: none; display: block; margin-bottom: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  #hero-canvas { display: none; }
}