/* Syed Forkan Uddin — static site
   No frameworks, no webfonts, no JavaScript.
   Container: 1200px. Reading columns capped with .prose. */

:root {
  --ink: #16202b;
  --ink-soft: #4a5a6a;
  --line: #dfe5ea;
  --bg: #fbfcfd;
  --bg-alt: #f2f5f8;
  --accent: #104e8b;
  --accent-soft: #e4edf8;
  --max: 1200px;
  --measure: 760px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.prose { max-width: var(--measure); }

a { color: var(--accent); }
a:hover { color: var(--ink); }
img { max-width: 100%; }

/* ---- header ---- */
.site-head { border-bottom: 1px solid var(--line); background: #fff; }
.site-head .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}
.brand {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
}
.head-right { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.nav { display: flex; gap: 22px; }
.nav a {
  font-size: 15px;
  text-decoration: none;
  color: var(--ink-soft);
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 5px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  text-decoration: none;
  border: 1px solid var(--accent);
  white-space: nowrap;
}
.btn:hover { background: #0b3d6e; color: #fff; }
.btn--ghost { background: #fff; color: var(--accent); }
.btn--ghost:hover { background: var(--accent-soft); color: var(--accent); }
.btn--sm { padding: 7px 13px; font-size: 14px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 0; }

/* ---- type ---- */
h1 { font-size: 40px; line-height: 1.15; letter-spacing: -.022em; margin: 0 0 16px; }
h2 { font-size: 24px; line-height: 1.3; letter-spacing: -.01em; margin: 0 0 12px; }
h3 { font-size: 17px; margin: 0 0 8px; }
p { margin: 0 0 16px; }

.kicker {
  font-size: 13px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 14px;
}
.lede { font-size: 20px; color: var(--ink-soft); }
.muted { color: var(--ink-soft); }
.small { font-size: 14px; }

main { padding: 56px 0 8px; }
section { margin-bottom: 64px; }
section > h2 { margin-top: 0; }

/* ---- hero ---- */
.hero {
  display: grid;
  gap: 44px;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  align-items: center;
}
.credential {
  margin: 0 0 4px;
  padding-left: 14px;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
  font-size: 15px;
}
.credential span { display: block; }

/* ---- images ---- */
.media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}
.media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.media--16x9 img { aspect-ratio: 16 / 9; }
.media--4x3 img { aspect-ratio: 4 / 3; }
.media--1x1 img { aspect-ratio: 1 / 1; }
.media--3x4 img { aspect-ratio: 3 / 4; object-fit: cover; }
.media--free img { height: auto; object-fit: contain; }
.media--plain { border: 0; border-radius: 0; background: none; }
.media figcaption,
figure > figcaption {
  font-size: 14px;
  color: var(--ink-soft);
  padding: 12px 16px 14px;
}
.media--plain figcaption { padding-left: 0; padding-right: 0; }

/* Profile photo frame — portrait orientation with accent border */
.media--profile {
  border-width: 2px;
  border-color: var(--accent-soft);
  border-radius: 10px;
  max-width: 380px;
}
.media--profile img { aspect-ratio: 3 / 4; object-fit: cover; }

.gallery {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

/* ---- stat numbers ---- */
.stats {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr));
  margin: 36px 0;
}
.stat {
  text-align: center;
  padding: 26px 16px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.stat-num {
  display: block;
  font-size: 38px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.05;
  letter-spacing: -.02em;
}
.stat-label {
  display: block;
  font-size: 14px;
  color: var(--ink-soft);
  margin-top: 6px;
}

/* ---- cards ---- */
.cards {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
}
.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 22px 22px 18px;
}
.card h3 { font-size: 16px; }
.card p { margin: 0; font-size: 15px; color: var(--ink-soft); }

/* ---- aircraft type cards ---- */
.aircraft-cards {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
}
.aircraft-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 22px 20px 18px;
}
.role-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 3px;
  padding: 3px 8px;
  margin-bottom: 10px;
}
.aircraft-card h3 { font-size: 16px; margin: 0 0 4px; }
.aircraft-card p { font-size: 14px; color: var(--ink-soft); margin: 0; }

.pull {
  margin: 36px 0;
  padding: 22px 26px;
  background: var(--accent-soft);
  border-radius: 8px;
  font-size: 20px;
  line-height: 1.5;
  max-width: 900px;
}

/* ---- research/entry rows ---- */
.entry {
  border-top: 1px solid var(--line);
  padding: 34px 0 0;
  margin-bottom: 34px;
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  align-items: start;
}
.entry--flip .entry-text { order: 2; }
.entry .no {
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 6px;
}
.entry h2 { font-size: 22px; margin-bottom: 12px; }
.entry .hook { font-size: 18px; }
.entry .tags { font-size: 13px; color: var(--ink-soft); margin-bottom: 0; }

/* flipped entries keep the wider column with the text */
.entry--flip { grid-template-columns: minmax(0, .82fr) minmax(0, 1fr); }

.list { margin: 0 0 16px; padding-left: 20px; }
.list li { margin-bottom: 8px; }

/* ---- course / cert rows ---- */
.course-list { border-top: 1px solid var(--line); }
.course-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  align-items: baseline;
}
.course-row .cnum {
  flex: 0 0 28px;
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
}
.course-row .ctitle { flex: 1 1 260px; }
.course-row .cstatus {
  font-size: 13px;
  color: var(--ink-soft);
  flex: 0 0 auto;
  white-space: nowrap;
}

/* ---- key/value table ---- */
.facts { border-top: 1px solid var(--line); margin: 0; max-width: 900px; }
.facts div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.facts dt { flex: 0 0 180px; color: var(--ink-soft); margin: 0; }
.facts dd { margin: 0; flex: 1 1 280px; }

.note {
  margin-top: 28px;
  padding: 16px 18px;
  background: var(--bg-alt);
  border-radius: 6px;
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 900px;
}

/* ---- publication entries ---- */
.pub-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.pub-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.pub-list a { font-weight: 500; }
.pub-list .pub-meta { font-size: 14px; color: var(--ink-soft); margin-top: 4px; }

/* ---- LinkedIn embeds ---- */
.embeds {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
}
.embed {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}
.embed iframe {
  display: block;
  width: 100%;
  height: 560px;
  border: 0;
}
.embed-slot {
  height: 560px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 28px;
  text-align: center;
  border: 1px dashed #c3d0da;
  border-radius: 8px;
  background: var(--bg-alt);
  color: var(--ink-soft);
  font-size: 14px;
}
.embed-slot strong { color: var(--ink); font-size: 15px; }
.embed-slot code {
  font-size: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 6px;
}

.next {
  display: inline-block;
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

/* ---- footer ---- */
.site-foot {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  background: #fff;
  font-size: 14px;
  color: var(--ink-soft);
}
.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  padding-bottom: 24px;
}
.site-foot a { text-decoration: none; }

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

@media (max-width: 1000px) {
  .entry,
  .entry--flip { grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: 30px; }
  .hero { gap: 36px; }
}

@media (max-width: 880px) {
  h1 { font-size: 34px; }
  .hero { grid-template-columns: 1fr; gap: 30px; }
  .entry,
  .entry--flip { grid-template-columns: 1fr; gap: 22px; }
  .entry--flip .entry-text { order: 0; }
  .entry .media,
  .hero .media { max-width: 560px; margin-left: auto; margin-right: auto; }
  .media--profile { max-width: 300px; }
}

@media (max-width: 640px) {
  .site-head .wrap { gap: 12px; }
  .head-right { width: 100%; justify-content: space-between; gap: 14px; }
  .nav { gap: 18px; }
  .nav a { padding: 6px 0 4px; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  h1 { font-size: 29px; }
  h2 { font-size: 21px; }
  .lede { font-size: 18px; }
  main { padding-top: 32px; }
  section { margin-bottom: 44px; }
  .pull { font-size: 18px; line-height: 1.45; padding: 18px 20px; margin: 28px 0; }
  .entry { padding-top: 28px; margin-bottom: 28px; }
  .embed iframe,
  .embed-slot { height: 460px; }
  .embed-slot { padding: 22px; }
  .facts dt,
  .course-row .ctitle { flex-basis: 100%; }
  .facts dt { flex-basis: 100%; }
  .site-foot .wrap { flex-direction: column; align-items: flex-start; gap: 8px; }
  .stat-num { font-size: 32px; }
}

@media (max-width: 380px) {
  .wrap { padding: 0 16px; }
  h1 { font-size: 26px; }
  .lede { font-size: 17px; }
  .nav { gap: 14px; }
  .nav a { font-size: 14px; }
  .btn--sm { padding: 7px 11px; font-size: 13px; }
  .btn-row .btn { flex: 1 1 100%; justify-content: center; }
  .credential { font-size: 14px; }
}