/* ==========================================================================
   ahmedmaksud.github.io — hand-coded, no framework.
   Shared across index / projects / publications / cv pages.
   ========================================================================== */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --text: #1d2430;
  --muted: #5a6472;
  --accent: #1552c0;
  --accent-soft: #eaf1fc;
  --border: #e3e8ef;
  --shadow: 0 1px 3px rgba(16, 24, 40, 0.07);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --bg-soft: #161d26;
    --text: #e6ebf2;
    --muted: #9aa6b5;
    --accent: #7db3ff;
    --accent-soft: #17263c;
    --border: #242e3a;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 16.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 22px;
}

/* ---------- top nav ---------- */

nav.topnav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

nav.topnav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

nav.topnav .brand {
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
}

nav.topnav ul {
  display: flex;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav.topnav ul a {
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}

nav.topnav ul a:hover { color: var(--text); text-decoration: none; }

nav.topnav ul a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---------- headings / sections ---------- */

main { padding: 40px 0 20px; }

h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 6px; }

h2 {
  font-size: 1.35rem;
  margin: 44px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

h3 { font-size: 1.12rem; margin: 0 0 4px; }

.muted { color: var(--muted); }
.small { font-size: 14px; }

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

.hero {
  display: flex;
  gap: 36px;
  align-items: flex-start;
  margin-top: 8px;
}

.hero .intro { flex: 1; }

.hero .tagline {
  font-size: 1.12rem;
  color: var(--muted);
  margin: 2px 0 14px;
}

.hero img.portrait {
  width: 190px;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.linkrow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 4px;
}

.linkrow a {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-soft);
}

.linkrow a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.linkrow a.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.linkrow a.primary:hover { opacity: 0.9; color: #fff; }

/* ---------- highlight stat cards ---------- */

/* ---------- news ---------- */

ul.news { list-style: none; margin: 0; padding: 0; }

ul.news li {
  display: flex;
  gap: 16px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--border);
}

ul.news li:last-child { border-bottom: none; }

ul.news .date {
  flex: 0 0 88px;
  color: var(--muted);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

/* ---------- education / experience rows ---------- */

.rows { display: flex; flex-direction: column; gap: 18px; }

.row .head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.row .head .where { font-weight: 650; }
.row .head .when { color: var(--muted); font-size: 14.5px; white-space: nowrap; }
.row .sub { color: var(--muted); font-size: 15px; }
.row p { margin: 6px 0 0; font-size: 15.5px; }
.row ul.worklist { margin: 6px 0 0; padding-left: 20px; font-size: 15.5px; }
.row ul.worklist li { margin: 3px 0; }

/* ---------- projects ---------- */

.project {
  display: grid;
  grid-template-columns: 1fr 285px;
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--border);
}

.project:last-of-type { border-bottom: none; }

.project.noimg { grid-template-columns: 1fr; }

.project.bigfig { grid-template-columns: 1fr 314px; }  /* ~10% wider figure column */

.project figure { margin: 0; align-self: center; }

.project figure img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.project p { margin: 10px 0 0; font-size: 15.5px; }

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 8px;
}

.badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  padding: 2.5px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid transparent;
}

a.badge:hover { text-decoration: none; filter: brightness(1.06); }

.badge.repo {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}

a.badge.repo:hover { color: var(--accent); border-color: var(--accent); }

.stack { color: var(--muted); font-size: 14px; margin-top: 10px; }
.stack strong { color: var(--text); font-weight: 600; }

/* ---------- publications ---------- */

ol.pubs { margin: 0; padding-left: 22px; }

ol.pubs li { margin: 0 0 18px; font-size: 15.5px; }

ol.pubs .venue { font-weight: 650; }
ol.pubs .me { font-weight: 700; text-decoration: underline; }

.publinks { display: inline; margin-left: 4px; }

.publinks a {
  font-size: 13px;
  font-weight: 600;
  margin-right: 8px;
  white-space: nowrap;
}

/* ---------- cv page ---------- */

.cvframe {
  width: 100%;
  height: 82vh;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 18px;
}

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

footer {
  margin-top: 48px;
  padding: 22px 0 34px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- responsive ---------- */

@media (max-width: 760px) {
  .hero { flex-direction: column-reverse; gap: 20px; }
  .hero img.portrait { width: 150px; }
  .stats { grid-template-columns: 1fr; }
  .project { grid-template-columns: 1fr; gap: 16px; }
  .project figure { max-width: 420px; }
  nav.topnav ul { gap: 14px; }
  nav.topnav .brand { display: none; }
}