:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1f2328;
  --muted: #5d6470;
  --line: #e6e2da;
  --accent: #0f5c63;
  --accent-soft: #e4f0ef;
  --tag: #8a5a12;
  --nav-h: 60px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171a; --surface: #1b1f23; --text: #e6e8ea; --muted: #a2a9b1;
    --line: #2c3238; --accent: #6cc3c9; --accent-soft: #1d3336; --tag: #e0b366;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #14171a; --surface: #1b1f23; --text: #e6e8ea; --muted: #a2a9b1;
  --line: #2c3238; --accent: #6cc3c9; --accent-soft: #1d3336; --tag: #e0b366;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 17px; line-height: 1.6;
  overflow-wrap: anywhere;
}
img { max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Fluid container: fills the screen on phones/tablets, caps on very wide screens */
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding-inline: clamp(16px, 4vw, 40px); }

h1, h2, h3 { font-family: "Source Serif 4", Georgia, serif; line-height: 1.25; text-wrap: balance; }
h2 { font-size: 1.5rem; margin: 0 0 14px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
h3 { font-size: 1.1rem; margin: 22px 0 8px; }
section { padding-block: 26px; }

/* ---------- Top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: var(--nav-h); }
.brand { font-family: "Source Serif 4", Georgia, serif; font-weight: 600; color: var(--text); white-space: nowrap; }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; flex-wrap: wrap; gap: 4px 18px; align-items: center; font-size: 0.97rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.theme-toggle { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 6px; padding: 3px 10px; cursor: pointer; font: inherit; font-size: 0.9rem; }
.menu-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; width: 42px; height: 38px; padding: 8px 9px; cursor: pointer; flex-direction: column; justify-content: space-between; }
.menu-toggle .bar { display: block; height: 2px; width: 100%; background: var(--text); border-radius: 2px; transition: transform .2s, opacity .2s; }
.menu-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Page layout: sticky profile sidebar + wide content ---------- */
.layout { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: clamp(28px, 4vw, 56px); align-items: start; }
.sidebar { position: sticky; top: calc(var(--nav-h) + 24px); padding-top: 32px; }
.content { min-width: 0; padding-top: 6px; }

.avatar { position: relative; width: 170px; height: 170px; border-radius: 50%; overflow: hidden; background: var(--accent-soft); display: grid; place-items: center; }
.avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; }
.initials { font-family: "Source Serif 4", Georgia, serif; font-size: 3.4rem; color: var(--accent); font-weight: 600; }
.ident h1 { font-size: 1.65rem; margin: 18px 0 6px; }
.role { margin: 0; }
.muted { color: var(--muted); font-size: 0.95rem; }
.facts { list-style: none; padding: 0; margin: 10px 0 12px; color: var(--muted); font-size: 0.95rem; }
.facts li { margin: 2px 0; }
.links { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.links a { border: 1px solid var(--line); border-radius: 999px; padding: 3px 13px; font-size: 0.92rem; background: var(--surface); }
.links a:hover { border-color: var(--accent); text-decoration: none; }

/* ---------- About ---------- */
#about p { margin: 0 0 12px; max-width: 78ch; }
.callout { background: var(--accent-soft); border-radius: 8px; padding: 10px 14px; }
.interests { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.interests span { font-size: 0.85rem; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 2px 10px; }

/* ---------- News ---------- */
.news { list-style: none; padding: 0; margin: 0; }
.news li { display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 14px; padding: 5px 0; }
.news time { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 0.93rem; padding-top: 1px; }
.news li.older[hidden] { display: none; }
.more { margin-top: 8px; background: none; border: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

/* ---------- Publications ---------- */
.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { display: grid; grid-template-columns: 124px minmax(0, 1fr); gap: 16px; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.pubs li:last-child { border-bottom: none; }
.venue { align-self: start; text-align: center; font-size: 0.8rem; font-weight: 600; color: var(--tag); border: 1px solid currentColor; border-radius: 4px; padding: 3px 6px; }
.pubs .title { font-weight: 600; }
.pubs p { margin: 2px 0; }
.authors { color: var(--muted); font-size: 0.95rem; }
.where, .note { font-size: 0.94rem; }
.plain { padding-left: 18px; margin: 0; }
.plain li { margin-bottom: 6px; }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 15px 17px; display: flex; flex-direction: column; }
.card h3 { margin: 0 0 4px; font-size: 1.08rem; }
.card p { margin: 6px 0; font-size: 0.95rem; }
.card .tag { color: var(--tag); font-size: 0.88rem; margin-top: 0; }
.card .stack { margin-top: auto; padding-top: 6px; }
.card .cta { margin: 8px 0 0; font-weight: 600; }
.pill { font-family: "Source Sans 3", system-ui, sans-serif; font-size: 0.72rem; font-weight: 600; color: var(--tag); border: 1px solid currentColor; border-radius: 999px; padding: 1px 7px; vertical-align: middle; margin-left: 4px; }
.urdu { font-family: "Noto Nastaliq Urdu", "Jameel Noori Nastaleeq", serif; color: var(--muted); font-weight: 400; margin-left: 6px; }
.stack { color: var(--muted); font-size: 0.86rem; }
.sub { color: var(--muted); font-family: "Source Sans 3", system-ui, sans-serif; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; margin: 20px 0 10px; }

/* ---------- Timeline & skills ---------- */
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 14px; padding: 7px 0; }
.timeline time { color: var(--muted); font-size: 0.93rem; font-variant-numeric: tabular-nums; }
.skills { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 6px 14px; margin: 0; }
.skills dt { font-weight: 600; }
.skills dd { margin: 0; }

.footer { color: var(--muted); font-size: 0.9rem; border-top: 1px solid var(--line); padding-block: 18px 40px; margin-top: 10px; }

/* ---------- Large desktop ---------- */
@media (min-width: 1500px) {
  body { font-size: 18px; }
  .container { max-width: 1360px; }
  .layout { grid-template-columns: 300px minmax(0, 1fr); }
}

/* ---------- Small laptop / landscape tablet ---------- */
@media (max-width: 1180px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- Tablet: profile moves on top, full-width content ---------- */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  .sidebar { position: static; display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 24px; align-items: center; padding-top: 28px; padding-bottom: 8px; }
  .avatar { width: 140px; height: 140px; }
  .initials { font-size: 2.8rem; }
  .ident h1 { margin-top: 0; font-size: 1.8rem; }

  .menu-toggle { display: flex; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: var(--nav-h);
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 6px clamp(16px, 4vw, 40px) 14px; box-shadow: 0 8px 18px rgba(0,0,0,.06);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .theme-toggle { align-self: flex-start; margin-top: 10px; }
}

/* ---------- Phone ---------- */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .sidebar { grid-template-columns: 1fr; gap: 14px; justify-items: start; }
  .avatar { width: 108px; height: 108px; }
  .initials { font-size: 2.2rem; }
  .ident h1 { font-size: 1.55rem; }
  h2 { font-size: 1.35rem; }
  .cards, .cards.two { grid-template-columns: 1fr; }
  .news li, .pubs li, .timeline li, .skills { grid-template-columns: 1fr; gap: 2px; }
  .skills dd { margin-bottom: 8px; }
  .venue { justify-self: start; }
  .brand { font-size: 0.98rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .menu-toggle .bar { transition: none; }
}