/* ==========================================================================
   Yoann Pull — personal website
   Clean academic-minimal theme
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;1,400&display=swap');

/* ---- Design tokens ------------------------------------------------------- */
:root {
  --bg:        #fbfaf7;   /* warm off-white           */
  --surface:   #ffffff;   /* cards / panels           */
  --ink:       #1c1c1a;   /* primary text             */
  --muted:     #6b6b64;   /* secondary text           */
  --line:      #e7e4dc;   /* hairline borders         */
  --accent:    #8c1515;   /* Stanford cardinal red    */
  --accent-2:  #6e1111;   /* darker hover             */
  --radius:    14px;
  --maxw:      780px;
  --serif:     'Fraunces', Georgia, 'Times New Roman', serif;
  --sans:      'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ---- Base ---------------------------------------------------------------- */
html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h1 { font-size: 2.1rem; }
h2 {
  font-size: 1.5rem;
  margin-top: 2.6rem;
  margin-bottom: 1.1rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--line);
  position: relative;
}
h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 46px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
h3 { font-size: 1.15rem; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
  border-bottom: 1px solid transparent;
}
a:hover {
  color: var(--accent-2);
  border-bottom-color: var(--accent-2);
}

p { margin-bottom: 1.1rem; }

/* Keep article content in a comfortable measure */
main.content,
#quarto-document-content {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

/* ---- Navbar -------------------------------------------------------------- */
.navbar {
  background-color: rgba(251, 250, 247, 0.85) !important;
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
  padding: 0.6rem 0;
}

.navbar .navbar-brand,
.navbar .navbar-nav .nav-link {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink) !important;
  letter-spacing: 0.01em;
}

.navbar .navbar-nav .nav-link {
  font-size: 1rem;
  padding: 0.35rem 0.9rem !important;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link.active {
  color: var(--accent) !important;
  border-bottom-color: var(--accent);
}

/* ---- Homepage hero ------------------------------------------------------- */
/* ---- Editorial two-column hero ---- */
.hero {
  max-width: 880px;
  margin: 0 auto;
  padding: 3.4rem 1rem 1.4rem;
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 2.4rem;
  align-items: start;
  animation: fadeUp 0.9s ease both;
}

.hero-left { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.hero-right { padding-top: 0.3rem; }

.hero-photo {
  width: 190px;
  height: 190px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--surface);
  box-shadow:
    0 0 0 1px var(--line),
    0 0 0 9px rgba(140, 21, 21, 0.06),
    0 12px 34px rgba(28, 28, 26, 0.14);
}

/* Status pill */
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.7rem;
  padding: 0.32rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent-2);
  background: #f7ebeb;
  border: 1px solid #ecd7d7;
  border-radius: 999px;
}
.hero-status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(140, 21, 21, 0.18);
}

.hero-name {
  font-family: var(--serif);
  font-size: 2.7rem;
  font-weight: 600;
  margin: 0 0 0.15rem;
  line-height: 1.05;
}

.hero-title {
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: 0.1rem;
}

.hero-affil {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

/* Research one-liner */
.hero-tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.12rem;
  color: var(--ink);
  margin: 0 0 1rem;
  line-height: 1.5;
  padding-left: 0.9rem;
  border-left: 2px solid var(--accent);
}

/* Social / link row */
.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: center;
}
.hero-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
}
.hero-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #fff;
}

/* About / prose block on home */
.about {
  max-width: var(--maxw);
  margin: 2.2rem auto 0;
  animation: fadeUp 1.1s ease both;
}
.about h2 { margin-top: 1.6rem; }

.interests {
  margin-top: 1.4rem;
  padding: 1.1rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.98rem;
}
.interests strong { color: var(--ink); }

/* ---- News / updates stream ---- */
.news {
  max-width: var(--maxw);
  margin: 0 auto;
}
.news-list {
  margin-top: 0.4rem;
  border-left: 2px solid var(--line);
  padding-left: 1.4rem;
}
.news-item {
  position: relative;
  padding: 0.55rem 0;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 0.9rem;
  align-items: baseline;
}
.news-item::before {
  content: "";
  position: absolute;
  left: calc(-1.4rem - 6px);
  top: 0.95rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.news-item.is-new::before { background: var(--accent); }
.news-date {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
}
.news-body { font-size: 0.98rem; line-height: 1.55; }

/* ---- Featured paper ------------------------------------------------------ */
.featured {
  position: relative;
  margin: 1.4rem 0 0.5rem;
  padding: 1.5rem 1.6rem;
  background:
    linear-gradient(180deg, #faf0f0 0%, var(--surface) 70%);
  border: 1px solid #ecd7d7;
  border-radius: var(--radius);
  box-shadow: 0 8px 26px rgba(140, 21, 21, 0.08);
}
.featured .kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  margin-bottom: 0.6rem;
}
.featured .f-title {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--ink);
  display: block;
  margin-bottom: 0.4rem;
}
.featured .authors { color: var(--ink); font-size: 0.98rem; }
.featured .authors .me { text-decoration: underline; text-underline-offset: 2px; }
.featured .venue {
  display: inline-block;
  margin-top: 0.15rem;
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.95rem;
}
.featured .summary {
  margin: 0.8rem 0 0.2rem;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--ink);
}
.featured .links { margin-top: 0.9rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.featured .links a {
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.28rem 0.8rem;
  border: 1px solid #e4cccc;
  border-radius: 999px;
  color: var(--accent);
  background: var(--surface);
}
.featured .links a:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---- Publication / entry cards ------------------------------------------- */
.entry {
  position: relative;
  overflow: hidden;
  padding: 1.15rem 1.3rem;
  margin-bottom: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.22s ease;
}
.entry:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(28, 28, 26, 0.09);
  border-color: #d9d5ca;
}
.entry:hover::before { transform: scaleY(1); }
.entry .title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.08rem;
  color: var(--ink);
  display: block;
  margin-bottom: 0.25rem;
}
.entry .authors { color: var(--ink); font-size: 0.96rem; }
.entry .authors .me { text-decoration: underline; text-underline-offset: 2px; }
.entry .venue { color: var(--muted); font-style: italic; font-size: 0.95rem; }
.entry .meta  { color: var(--muted); font-size: 0.9rem; }

/* Pill links inside entries */
.entry .links { margin-top: 0.6rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.entry .links a {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
}
.entry .links a:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Right-aligned year tag */
.entry .year {
  float: right;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
  margin-left: 1rem;
}

.badge-soft {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  background: #f7ebeb;
  color: var(--accent-2);
  vertical-align: middle;
}

/* ---- Footer -------------------------------------------------------------- */
.nav-footer {
  border-top: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 0.9rem;
}
.nav-footer a { color: var(--muted); }
.nav-footer a:hover { color: var(--accent); border-bottom-color: transparent; }

/* ---- Animation ----------------------------------------------------------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
}

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 1.4rem;
    text-align: center;
    padding-top: 2.6rem;
  }
  .hero-right { padding-top: 0; }
  .hero-tagline {
    border-left: 0;
    padding-left: 0;
    max-width: 30rem;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 600px) {
  body { font-size: 1rem; }
  .hero-name { font-size: 2rem; }
  .hero-photo { width: 150px; height: 150px; }
  h1 { font-size: 1.7rem; }
  .entry .year { float: none; display: block; margin: 0 0 0.3rem; }
  .news-item { grid-template-columns: 1fr; gap: 0.15rem; }
}