/*
  Muhammad Maaz research website styles.
  Edit colors in :root, or edit content in assets/js/data.js.
*/
:root {
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #162033;
  --muted: #5c677d;
  --soft: #e8edf6;
  --accent: #2457a6;
  --accent-dark: #183c74;
  --accent-soft: #eaf1ff;
  --border: #dbe2ee;
  --shadow: 0 20px 55px rgba(20, 35, 70, 0.09);
  --radius: 18px;
  --radius-small: 12px;
  --container: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: radial-gradient(circle at top left, #edf4ff 0, var(--bg) 34rem);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }
img { max-width: 100%; display: block; }
.container { width: min(var(--container), calc(100% - 36px)); margin: 0 auto; }
.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  background: var(--text);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 10;
}
.skip-link:focus { left: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(247, 248, 251, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(219, 226, 238, 0.8);
}
.header-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--text);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  letter-spacing: -0.04em;
  box-shadow: var(--shadow);
}
.brand:hover { color: #fff; text-decoration: none; }
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.site-nav a {
  color: var(--text);
  padding: 8px 11px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 650;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-dark);
  text-decoration: none;
}
.site-nav .nav-cta {
  background: var(--text);
  color: #fff;
}
.site-nav .nav-cta:hover { background: var(--accent-dark); color: #fff; }

main { padding-bottom: 64px; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(280px, 0.8fr);
  gap: 34px;
  padding: 58px 0 20px;
  align-items: center;
}
.eyebrow {
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  margin: 0 0 12px;
}
h1 {
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
  margin: 0 0 18px;
}
.lead {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: #303b50;
  margin: 0 0 18px;
  max-width: 790px;
}
.bio-text {
  color: var(--muted);
  max-width: 790px;
  margin: 0 0 24px;
}
.hero-links, .inline-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.button-link, .inline-links a, .publication-links a, .timeline-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.92rem;
  font-weight: 700;
}
.button-link.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.button-link:hover, .inline-links a:hover, .publication-links a:hover, .timeline-links a:hover {
  transform: translateY(-1px);
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(20, 35, 70, 0.08);
}
.button-link.primary:hover { background: var(--accent-dark); color: #fff; }
.profile-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 8px);
  padding: 22px;
  box-shadow: var(--shadow);
}
.profile-image {
  width: 176px;
  height: 176px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 18px;
  border: 6px solid var(--accent-soft);
}
.profile-card h2 {
  font-size: 1.2rem;
  margin: 0;
  text-align: center;
}
.profile-card p {
  margin: 5px 0 16px;
  text-align: center;
  color: var(--muted);
}
.interest-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  padding: 0;
  margin: 0;
  list-style: none;
}
.pill, .badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  padding: 5px 9px;
  font-size: 0.82rem;
  font-weight: 750;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}
.stat-card {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  padding: 16px;
}
.stat-value { font-size: 1.38rem; font-weight: 850; letter-spacing: -0.03em; }
.stat-label { color: var(--muted); font-size: 0.88rem; }

.section {
  padding: 30px 0;
}

#news,
#publications,
#experience,
#awards {
  scroll-margin-top: 50px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 18px;
}
.section-kicker {
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 850;
  margin: 0 0 4px;
}
.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
  margin: 0;
}
.section-description {
  margin: 8px 0 0;
  color: var(--muted);
  max-width: 760px;
}
.news-list {
  display: grid;
  gap: 12px;
}
.news-item, .publication-card, .compact-card, .timeline-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(20, 35, 70, 0.05);
}
.news-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  padding: 18px;
}
.news-date {
  color: var(--accent);
  font-weight: 850;
  font-size: 0.9rem;
}
.news-title {
  font-weight: 850;
  margin: 0 0 3px;
}
.news-text { margin: 0 0 10px; color: var(--muted); }
.show-more {
  margin-top: 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 999px;
  padding: 9px 14px;
  font-weight: 800;
  cursor: pointer;
  color: var(--text);
}
.show-more:hover { border-color: var(--accent); color: var(--accent); }
[hidden] { display: none !important; }

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}
.filter-button {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
}
.filter-button.active, .filter-button:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.publication-list { display: grid; gap: 14px; }
.publication-card {
  padding: 20px;
}
.pub-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}
.pub-venue {
  color: var(--accent);
  font-weight: 850;
  font-size: 0.92rem;
}
.pub-year {
  color: var(--muted);
  font-weight: 750;
}
.publication-card h3 {
  margin: 0 0 8px;
  font-size: 1.18rem;
  line-height: 1.35;
}
.authors {
  color: #3f485a;
  font-size: 0.95rem;
  margin: 0 0 9px;
}
.authors strong { color: var(--text); }
.pub-summary {
  color: var(--muted);
  margin: 0 0 13px;
}
.badge-row, .publication-links, .timeline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.publication-links { margin-top: 12px; }

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.compact-card { padding: 18px; }
.compact-card h3 { margin: 0 0 12px; font-size: 1.05rem; }
.item-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.item-list li {
  padding-left: 16px;
  border-left: 3px solid var(--soft);
}
.item-list .period { color: var(--accent); font-size: 0.88rem; font-weight: 850; }
.item-list .title { font-weight: 850; }
.item-list .org { color: #384257; }
.item-list .details { color: var(--muted); margin-top: 2px; }
.awards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.award-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.award-card .year { color: var(--accent); font-weight: 850; }
.award-card h3 { margin: 4px 0; font-size: 1rem; }
.award-card p { margin: 0; color: var(--muted); }


.timeline-hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
}

.timeline-wrap {
  position: relative;
  display: grid;
  gap: 18px;
  padding: 30px 0 58px;
}

.timeline-wrap::before {
  content: "";
  position: absolute;
  top: 30px;
  bottom: 58px;
  left: 50%;
  width: 3px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent, var(--accent), transparent);
  border-radius: 999px;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 58px minmax(0, 1fr);
  align-items: center;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.timeline-marker {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  width: 17px;
  height: 17px;
  border-radius: 999px;
  background: var(--accent);
  border: 4px solid var(--bg);
  box-shadow: 0 0 0 4px rgba(26, 99, 184, 0.13);
  z-index: 1;
}

.timeline-content {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(20, 35, 70, 0.05);
  padding: 18px;
}

.timeline-left .timeline-content {
  grid-column: 1;
  grid-row: 1;
  text-align: left;
}

.timeline-right .timeline-content {
  grid-column: 3;
  grid-row: 1;
}

.timeline-date {
  color: var(--accent);
  font-weight: 900;
  font-size: 0.9rem;
  margin-bottom: 5px;
}

.timeline-content h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.timeline-content p {
  margin: 0 0 10px;
  color: var(--muted);
}

.timeline-left .timeline-links {
  justify-content: flex-end;
}
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,0.75);
}
.footer-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 46px; }
  .stats-grid, .awards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .two-column { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; }

  .timeline-wrap::before {
    left: 12px;
  }

  .timeline-item {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .timeline-marker {
    grid-column: 1;
  }

  .timeline-left .timeline-content,
  .timeline-right .timeline-content {
    grid-column: 2;
    text-align: left;
  }

  .timeline-left .timeline-links {
    justify-content: flex-start;
  }
  .header-inner { align-items: flex-start; padding: 14px 0; }
  .site-nav { gap: 4px; }
  .site-nav a { padding: 7px 9px; font-size: 0.9rem; }
}
@media (max-width: 560px) {
  .container { width: min(100% - 24px, var(--container)); }
  .stats-grid, .awards-grid { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; }
  .site-nav { justify-content: flex-start; }
  .section-header { align-items: flex-start; flex-direction: column; }
  .footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; }
}
@media print {
  .site-header, .site-footer, .filter-row, .show-more { display: none; }
  body { background: #fff; color: #000; }
  .publication-card, .news-item, .compact-card, .award-card, .timeline-item { box-shadow: none; break-inside: avoid; }
  a { color: #000; }
}