/* =========================================================
   Shared site shell — al-folio inspired
   Used by: index, timeline, projects, blogs, photos
   ========================================================= */

/* ---------- theme tokens ---------- */
:root {
  --bg: #ffffff;
  --text: #1c1c1c;
  --muted: #6b6b6b;
  --heading: #111111;
  --link: #b509ac;
  --link-hover: #d43fce;
  --accent: #4a9ae1;
  --border: #e5e5e5;
  --surface: #f7f7f7;
  --surface-2: #efefef;
  --nav-bg: rgba(255, 255, 255, 0.92);
  --overlay: rgba(0, 0, 0, 0.45);
  --shadow: rgba(0, 0, 0, 0.12);
}

:root[data-theme="dark"] {
  --bg: #1c1c1d;
  --text: #e8e8e8;
  --muted: #9a9a9a;
  --heading: #ffffff;
  --link: #4a9ae1;
  --link-hover: #86c2f5;
  --accent: #4a9ae1;
  --border: #333336;
  --surface: #232325;
  --surface-2: #2b2b2e;
  --nav-bg: rgba(28, 28, 29, 0.92);
  --overlay: rgba(0, 0, 0, 0.6);
  --shadow: rgba(0, 0, 0, 0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Source Sans 3', 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background .25s ease, color .25s ease;
}

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

img { max-width: 100%; }

/* ---------- nav ---------- */
.navbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled { border-bottom-color: var(--border); }

.navbar__inner {
  max-width: 1000px; margin: 0 auto;
  padding: .85rem 1.25rem;
  display: flex; align-items: center; justify-content: flex-end;
  gap: 1.25rem; flex-wrap: wrap;
}

.navbar a.nav-link { color: var(--text); font-size: .98rem; opacity: .85; }
.navbar a.nav-link:hover { color: var(--accent); opacity: 1; }
.navbar a.nav-link.is-active { color: var(--accent); opacity: 1; }

.icon-btn {
  background: none; border: 0; cursor: pointer;
  color: var(--text); font-size: 1rem; opacity: .85;
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .15rem .25rem; font-family: inherit;
}
.icon-btn:hover { color: var(--accent); opacity: 1; }
.icon-btn .kbd { font-size: .95rem; letter-spacing: .02em; }

/* ---------- page shell ---------- */
.page {
  max-width: 1000px; margin: 0 auto;
  padding: 3.5rem 1.25rem 4rem;
}
.page--wide { max-width: 1200px; }

.page-title {
  font-size: clamp(2rem, 4.5vw, 2.8rem);
  font-weight: 300; color: var(--heading);
  letter-spacing: -.02em; line-height: 1.15;
  margin-bottom: .6rem;
}
.page-title strong { font-weight: 800; }

.page-subtitle {
  color: var(--muted); font-size: 1rem;
  margin-bottom: 2.5rem; max-width: 60ch;
}

.section-title {
  font-size: 2rem; font-weight: 300; color: var(--heading);
  margin: 4rem 0 1.5rem; letter-spacing: -.01em;
}

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem; padding: 1.5rem 1.25rem;
  text-align: center; color: var(--muted); font-size: .87rem;
}

/* ---------- socials ---------- */
.socials {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 1.6rem; margin: 4rem 0 0;
}
.socials a {
  color: var(--text); font-size: 1.9rem; opacity: .85;
  transition: transform .2s ease, color .2s ease;
}
.socials a:hover { color: var(--accent); opacity: 1; transform: translateY(-3px); }

/* ---------- search overlay ---------- */
.search-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: var(--overlay);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 12vh 1rem 1rem;
}
.search-panel {
  width: 100%; max-width: 560px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
  box-shadow: 0 20px 60px var(--shadow);
}
.search-panel input {
  width: 100%; border: 0; outline: 0;
  background: transparent; color: var(--text);
  font-family: inherit; font-size: 1.05rem;
  padding: 1rem 1.15rem; border-bottom: 1px solid var(--border);
}
.search-results { max-height: 55vh; overflow-y: auto; }
.search-results a {
  display: block; padding: .7rem 1.15rem; color: var(--text);
  border-bottom: 1px solid var(--border);
}
.search-results a:last-child { border-bottom: 0; }
.search-results a:hover,
.search-results a.is-active { background: var(--surface); color: var(--text); }
.search-results .r-title { font-weight: 600; }
.search-results .r-sub { font-size: .85rem; color: var(--muted); }
.search-empty { padding: 1rem 1.15rem; color: var(--muted); font-size: .92rem; }

/* =========================================================
   Home page
   ========================================================= */
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 2.5rem; align-items: start;
}
.hero__bio p + p { margin-top: 1.1rem; }

.hero__photo {
  width: 100%; aspect-ratio: 1 / 1.15; object-fit: cover;
  border-radius: 10px; display: block;
  box-shadow: 0 2px 12px var(--shadow);
}
.hero__meta {
  margin-top: .75rem; font-size: .9rem; color: var(--muted);
  display: flex; flex-direction: column; gap: .3rem;
}

/* news table */
.news { width: 100%; border-collapse: collapse; }
.news td { padding: .55rem .75rem .55rem 0; vertical-align: top; border: 0; }
.news td.date {
  white-space: nowrap; font-weight: 700; font-size: .95rem;
  color: var(--text); width: 12rem; padding-left: .25rem;
}
.news tr:hover td { background: var(--surface); }

/* affiliations */
.affiliations {
  display: flex; justify-content: center; align-items: center;
  gap: 2.75rem; flex-wrap: wrap; margin-top: 1.5rem;
}
.affiliations img {
  height: 42px; max-width: 150px; object-fit: contain;
  opacity: .7; transition: opacity .25s ease, transform .25s ease;
}
:root[data-theme="dark"] .affiliations img { filter: brightness(0) invert(1); }
:root:not([data-theme="dark"]) .affiliations img { filter: grayscale(1); }
/* white-on-transparent logo needs inverting in light mode */
:root:not([data-theme="dark"]) .affiliations img.logo--white { filter: invert(1) grayscale(1); }
.affiliations a:hover img { opacity: 1; transform: scale(1.06); }

/* =========================================================
   Timeline / profile page
   ========================================================= */
.timeline { border-left: 2px solid var(--border); margin-left: .5rem; }

.tl-entry { position: relative; padding: 0 0 2.5rem 2rem; }
.tl-entry::before {
  content: ''; position: absolute;
  left: -7px; top: .55rem;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--border);
  transition: border-color .25s ease, background .25s ease;
}
.tl-entry:hover::before { border-color: var(--accent); background: var(--accent); }
.tl-entry:last-child { padding-bottom: .5rem; }

.tl-date {
  font-size: .85rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: .06em;
  margin-bottom: .3rem;
}
.tl-title {
  font-size: 1.2rem; font-weight: 700; color: var(--heading);
  line-height: 1.35; margin-bottom: .2rem;
}
.tl-org { font-size: 1rem; margin-bottom: .8rem; }

.tl-roles { display: grid; gap: 1rem; margin: .6rem 0 0; }
.tl-role p { margin-top: .3rem; }
.tl-role-title { font-weight: 600; color: var(--heading); font-size: .96rem; }
.tl-role-meta { font-size: .87rem; color: var(--muted); }

.tl-entry ul { padding-left: 1.15rem; margin: .6rem 0 0; }
.tl-entry li { margin-bottom: .35rem; font-size: .96rem; }
.tl-entry p { margin: .6rem 0 0; font-size: .96rem; }

.tl-tags { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0 0; }

.tag {
  display: inline-block;
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 999px;
  padding: .15rem .65rem; font-size: .78rem; line-height: 1.6;
}

.attachment { margin: .6rem 0 0; font-size: .96rem; }
.attachment a {
  color: var(--accent); font-weight: 600;
  text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1.5px;
}
.attachment a:hover { opacity: .8; }

/* =========================================================
   Projects page
   ========================================================= */
.projects-grid {
  display: grid; gap: 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.project-card {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 1.25rem 1.35rem; background: var(--bg);
  cursor: pointer; text-align: left; width: 100%;
  font-family: inherit; font-size: 1rem; color: var(--text);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.project-card:hover {
  transform: translateY(-4px); border-color: var(--accent);
  box-shadow: 0 6px 20px var(--shadow);
}
.project-card h3 { font-size: 1.1rem; color: var(--heading); margin-bottom: .4rem; }
.project-card p { font-size: .93rem; color: var(--muted); }
.project-card .tl-tags { margin-top: .9rem; }

/* modal */
.modal {
  position: fixed; inset: 0; z-index: 100;
  background: var(--overlay);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 8vh 1rem 2rem; overflow-y: auto;
}
.modal__content {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 2rem;
  max-width: 620px; width: 100%; position: relative;
  box-shadow: 0 20px 60px var(--shadow);
}
.modal__close {
  position: absolute; top: .75rem; right: .9rem;
  background: none; border: 0; cursor: pointer;
  font-size: 1.6rem; line-height: 1; color: var(--muted); font-family: inherit;
}
.modal__close:hover { color: var(--accent); }
.modal__content h2 { font-size: 1.4rem; font-weight: 600; color: var(--heading); margin-bottom: .6rem; padding-right: 2rem; }
.modal__content h3 { font-size: 1rem; color: var(--heading); margin: 1.4rem 0 .5rem; }
.modal__content ul { padding-left: 1.15rem; }
.modal__content li { margin-bottom: .4rem; font-size: .95rem; }

.source-link {
  display: inline-flex; align-items: center; gap: .5rem;
  margin-top: 1rem; font-size: .9rem; font-weight: 600;
}

/* =========================================================
   Blog page
   ========================================================= */
.blog-list { display: flex; flex-direction: column; }
.blog-item {
  display: grid; grid-template-columns: 180px minmax(0, 1fr);
  gap: 1.5rem; align-items: start;
  padding: 1.5rem 0; border-bottom: 1px solid var(--border);
}
.blog-item:first-child { padding-top: 0; }
.blog-item img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
  border-radius: 8px; display: block;
}
.blog-item h3 { font-size: 1.2rem; font-weight: 600; color: var(--heading); margin-bottom: .25rem; }
.blog-item .pub-date {
  font-size: .82rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: .05em; margin-bottom: .5rem;
}
.blog-item p { font-size: .95rem; color: var(--muted); margin-bottom: .7rem; }
.blog-item .read-more { font-size: .9rem; font-weight: 600; }

.state-msg { color: var(--muted); font-size: .95rem; padding: 1.5rem 0; }

/* =========================================================
   Photos page
   ========================================================= */
.gallery { column-count: 3; column-gap: 1rem; }
.gallery__item {
  display: inline-block; width: 100%; margin-bottom: 1rem;
  border-radius: 8px; overflow: hidden; position: relative;
  break-inside: avoid; cursor: zoom-in;
  transition: transform .25s ease;
}
.gallery__item:hover { transform: translateY(-4px); }
.gallery__item img { width: 100%; height: auto; display: block; }
.gallery__meta {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, .65); backdrop-filter: blur(4px);
  color: #fff; font-size: .84rem; padding: .5rem .7rem;
  opacity: 0; transform: translateY(100%);
  transition: opacity .25s ease, transform .25s ease;
}
.gallery__item:hover .gallery__meta { opacity: 1; transform: translateY(0); }
.gallery__meta a { color: #8fc7f5; }

.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0, 0, 0, .9);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .25s ease;
}
.lightbox.is-visible { opacity: 1; pointer-events: auto; }
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: 6px; }
.lightbox__close {
  position: absolute; top: 1.5rem; right: 1.75rem;
  background: none; border: 0; cursor: pointer;
  font-size: 2rem; line-height: 1; color: #fff; font-family: inherit;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1000px) {
  .gallery { column-count: 2; }
}

@media (max-width: 800px) {
  .hero__grid { grid-template-columns: 1fr; gap: 1.75rem; }
  .hero__photo { max-width: 320px; margin: 0 auto; }
  .hero__meta { align-items: center; }
  .news td.date { width: auto; display: block; padding-bottom: 0; }
  .news td.desc { display: block; padding-top: .1rem; padding-bottom: .9rem; }
  .navbar__inner { gap: .9rem; }
  .blog-item { grid-template-columns: 1fr; }
  .blog-item img { max-width: 320px; }
}

@media (max-width: 600px) {
  .gallery { column-count: 1; }
  .page { padding: 2.5rem 1rem 3rem; }
  .modal__content { padding: 1.5rem; }
}