/* ============================================================
   Custom polish layer for Ximeng Sun's homepage
   Loaded after Bootstrap 2 + style.css + kbroman.css to override.
   ============================================================ */

:root {
  --ink:        #24292f;
  --muted:      #6b7280;
  --accent:     #3f5695;
  --accent-dk:  #2c3c6b;
  --border:     #e7e9ee;
  --soft:       #f6f8fb;
  --cta-bg:     #fdf1ef;
  --cta-bd:     #c0392b;
  --radius:     10px;
  --maxw:       880px;
}

/* ---------- Base typography ---------- */
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

p { margin: 0 0 14px; }

/* ---------- Layout width normalisation (undo rigid BS2 grid) ---------- */
.container-narrow,
.container {
  max-width: var(--maxw) !important;
  width: auto !important;
  margin: 0 auto !important;
  padding-left: 22px;
  padding-right: 22px;
  box-sizing: border-box;
}
.content { padding-top: 8px; }
.row-fluid [class*="span"],
.container [class*="span"] {
  width: auto !important;
  float: none !important;
  margin-left: 0 !important;
  display: block;
  min-height: 0;
}

/* ---------- Links ---------- */
a { color: var(--accent); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--accent-dk); background: transparent; text-decoration: underline; }
a img, a:hover img { border: 0; background: transparent; }

/* ---------- Headings ---------- */
h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.25; }
h2 {
  font-size: 1.5rem;
  margin: 38px 0 18px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
  letter-spacing: -0.01em;
}
h3 {
  font-size: 1.12rem;
  color: var(--accent-dk);
  margin: 24px 0 12px;
}
h4 { font-size: 1.05rem; margin: 0 0 10px; }

/* Section dividers from markdown `---` */
hr { border: 0; border-top: 1px solid var(--border); margin: 26px 0; }

/* ============================================================
   Top navbar (brand + Publication / About Me)
   ============================================================ */
body > .navbar { margin-bottom: 22px; }
.navbar .navbar-inner {
  background: #fff;
  border: 0;
  border-bottom: 1px solid var(--border);
  box-shadow: none;
  border-radius: 0;
  padding: 6px 0;
}
.navbar .brand {
  color: var(--ink);
  font-weight: 700;
  font-size: 1.05rem;
  text-shadow: none;
  padding-left: 0;
}
.navbar .brand:hover { color: var(--accent); }
.navbar .nav > li > a {
  color: var(--muted);
  font-weight: 600;
  text-shadow: none;
  padding: 8px 12px;
  border-radius: 6px;
}
.navbar .nav > li > a:hover {
  color: var(--accent);
  background: var(--soft);
  text-decoration: none;
}

/* The in-page social nav (LinkedIn / Github / Scholar) */
.content > .navbar { margin: 0 0 6px; }
.content > .navbar .navbar-inner { border-bottom: 0; padding: 0; }
.content > .navbar .nav { float: none; margin: 0; }
.content > .navbar .nav > li > a {
  border: 1px solid var(--border);
  margin-right: 8px;
  color: var(--accent);
  background: #fff;
}
.content > .navbar .nav > li > a:hover { background: var(--soft); color: var(--accent-dk); }

/* ============================================================
   Intro block (bio + photo)
   ============================================================ */
.intro { overflow: hidden; }           /* contain the float */
.intro p { text-align: justify; }

/* Portrait — floated so the bio text wraps around it */
img.portrait,
img[alt="Ximeng Sun"] {
  float: right;
  width: 260px !important;
  max-width: 42vw;
  height: auto !important;
  margin: 4px 0 14px 26px;
  border-radius: 14px;
  box-shadow: 0 6px 22px rgba(31, 41, 55, .16);
  display: block;
}

/* ---------- Call-to-action banner ---------- */
p.cta {
  background: var(--cta-bg);
  border: 1px solid #f0c9c2;
  border-left: 4px solid var(--cta-bd);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 20px 0 4px;
  color: #7c2318;
}
p.cta strong { color: var(--cta-bd); }
p.cta a { color: var(--cta-bd); text-decoration: underline; font-weight: 600; }

/* ============================================================
   Generic list polish
   ============================================================ */
.content ul:not(.nav) { padding-left: 0; list-style: none; margin: 0 0 14px; }
.content ul:not(.nav) > li { position: relative; padding-left: 20px; margin-bottom: 8px; }
.content ul:not(.nav) > li::before {
  content: "";
  position: absolute;
  left: 4px; top: 12px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .6;
}
/* never dot / indent the social nav list */
.content .nav li { padding-left: 0; margin-bottom: 0; }
.content .nav li::before { display: none; }

/* ============================================================
   Model releases — card-ish rows
   ============================================================ */
h2 + ul li,               /* Selected Open Model Releases list */
#collaborators ~ p { }

/* ============================================================
   Publications
   ============================================================ */
/* Publication entries: <ul><li>citation</li><p>links</p></ul> */
h3 + ul { }
.content h3 ~ ul li,
.content ul li { line-height: 1.55; }

/* the meta line with paper / code links sits in a <p> after each <li> */
.content ul + p,
.content li + p {
  margin: -4px 0 16px 20px;
  font-size: .9rem;
}
.content li + p a {
  display: inline-block;
  padding: 1px 9px;
  margin-right: 4px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--soft);
  color: var(--accent);
  font-weight: 600;
  font-size: .82rem;
}
.content li + p a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  text-decoration: none;
}

/* Bold author name (you) stands out subtly */
.content li strong { color: var(--ink); }

/* ---------- Contact ---------- */
#hide_email { color: var(--muted); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .intro p { text-align: left; }
  /* stop wrapping on narrow screens: center the portrait above the text */
  img.portrait,
  img[alt="Ximeng Sun"] {
    float: none;
    margin: 0 auto 18px;
    width: 240px !important;
    max-width: 70vw;
  }
  .navbar .nav { float: none; }
  h2 { font-size: 1.3rem; }
}