/*
  Research portfolio — shared styles.
  Open index.html in a browser, or publish this repo as GitHub Pages (Settings → Pages → branch main, /root).
*/

:root {
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --border: #e0e0e0;
  --bg: #fafafa;
  --accent: #1e4d8c;
  --max: 52rem;
  --thumb: 11rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.site-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

/* ----- Bio (top) ----- */

.bio {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 640px) {
  .bio {
    grid-template-columns: min(var(--thumb), 38%) 1fr;
    gap: 2rem;
  }
}

.bio-photo {
  margin: 0;
}

.bio-photo img {
  display: block;
  width: 100%;
  max-width: var(--thumb);
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.bio-text h1 {
  margin: 0 0 0.35rem;
  font-size: 1.85rem;
  font-weight: 600;
  line-height: 1.2;
}

.bio-text .tagline {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1rem;
}

.bio-text p {
  margin: 0 0 0.85rem;
}

.bio-text p:last-child {
  margin-bottom: 0;
}

/* ----- Projects list (newest first) ----- */

.projects-section {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.projects-section h2 {
  margin: 0 0 1.25rem;
  font-size: 1.15rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.projects-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.project-row {
  display: grid;
  gap: 1rem;
  align-items: start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.project-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

@media (min-width: 560px) {
  .project-row {
    grid-template-columns: min(var(--thumb), 34%) 1fr;
    gap: 1.25rem;
  }
}

.project-thumb {
  display: block;
  line-height: 0;
}

.project-thumb img,
.project-thumb-video {
  width: 100%;
  max-width: var(--thumb);
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--border);
  vertical-align: middle;
}

.project-thumb-video {
  display: block;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  background: #111;
}

.project-body h3 {
  margin: 0 0 0.35rem;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.25;
}

.project-body h3 a {
  color: var(--text);
  text-decoration: none;
}

.project-body h3 a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.project-meta {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.project-desc {
  margin: 0;
  font-size: 0.98rem;
  color: var(--text);
}

/* ----- Project detail page ----- */

.back-nav {
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.article-block {
  margin-bottom: 2rem;
}

.article-block:last-child {
  margin-bottom: 0;
}

.article-block h1 {
  margin: 0 0 1rem;
  font-size: 1.75rem;
  line-height: 1.2;
}

.article-block p {
  margin: 0 0 0.85rem;
}

.article-block p:last-child {
  margin-bottom: 0;
}

.video-wrap {
  margin: 0;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
}

.video-wrap video {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.embed-wrap {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: #000;
}

.embed-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}