/* ==========================================================================
   Custom styles for Xinyue Zhang's academic site
   Aesthetic: Notion-inspired — white background, serif typography,
   restrained accents, generous whitespace
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Crimson+Pro:ital,wght@0,300..700;1,300..700&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg:           #ffffff;
  --bg-soft:      #f7f6f3;
  --bg-hover:     #f1f0ed;
  --ink:          #37352f;
  --ink-soft:     #5f5b54;
  --ink-faint:    #9b9a97;
  --accent:       #a8472b;
  --accent-soft:  #c97a5b;
  --sage:         #6e7f5c;
  --gold:         #b8893a;
  --hairline:     #e9e9e7;
  --hairline-soft:#f0efed;
  --shadow:       0 1px 2px rgba(15, 15, 15, 0.03),
                  0 4px 12px rgba(15, 15, 15, 0.04);
}

/* --- Global background -------------------------------------------------- */
html,
body,
.page,
.page__content,
.masthead,
.masthead__inner-wrap,
.greedy-nav,
.sidebar,
.initial-content,
.layout--single {
  background-color: var(--bg) !important;
}

body,
.page__content,
.page__content p,
.page__content li {
  font-family: 'Crimson Pro', 'Source Serif Pro', Georgia, serif !important;
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--ink);
  font-weight: 400;
}

.page__content p { margin-bottom: 1.05em; }

/* --- Headings ----------------------------------------------------------- */
.page__content h1,
.page__content h2,
.page__content h3,
.page__title {
  font-family: 'Crimson Pro', Georgia, serif !important;
  color: var(--ink) !important;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page__title {
  font-size: 2.4rem;
  font-style: italic;
  font-weight: 500;
  border-bottom: none !important;
  margin-bottom: 1.4rem;
}

.page__content h2 {
  font-size: 1.65rem;
  margin-top: 2.6rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--hairline);
}

.page__content h3 {
  font-size: 1.3rem;
  margin-top: 1.6rem;
}

.page__content hr {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 2.4rem 0;
}

/* --- Links -------------------------------------------------------------- */
.page__content a,
.page__content a:visited {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  transition: all 0.15s ease;
  padding-bottom: 1px;
}

.page__content a:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.page__content strong { color: var(--ink); font-weight: 600; }
.page__content em     { color: var(--ink-soft); font-style: italic; }

/* --- Navigation --------------------------------------------------------- */
.masthead {
  border-bottom: 1px solid var(--hairline) !important;
  box-shadow: none !important;
  background-color: var(--bg) !important;
}

.masthead__inner-wrap {
  background-color: var(--bg) !important;
  padding: 0.8rem 1rem;
}

.greedy-nav,
.greedy-nav button {
  background-color: var(--bg) !important;
}

.greedy-nav a {
  font-family: 'Inter', -apple-system, sans-serif !important;
  font-size: 0.88rem !important;
  font-weight: 500;
  color: var(--ink-soft) !important;
  letter-spacing: 0.01em;
  background: transparent !important;
}

.greedy-nav a:hover {
  color: var(--accent) !important;
  background: var(--bg-soft) !important;
}

.greedy-nav .site-title {
  font-family: 'Crimson Pro', Georgia, serif !important;
  font-style: italic;
  font-weight: 500;
  color: var(--ink) !important;
  font-size: 1.2rem !important;
}

/* --- Sidebar ------------------------------------------------------------ */
.sidebar .author__name {
  font-family: 'Crimson Pro', Georgia, serif !important;
  font-weight: 600;
  color: var(--ink) !important;
  font-size: 1.18rem;
}

.sidebar .author__pronouns,
.sidebar .author__bio,
.sidebar .author__urls li {
  font-family: 'Inter', -apple-system, sans-serif !important;
  font-size: 0.85rem !important;
  color: var(--ink-soft);
}

.sidebar .author__avatar img {
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow);
}

.sidebar .author__urls a {
  color: var(--ink-soft) !important;
  border-bottom: none !important;
}

.sidebar .author__urls a:hover { color: var(--accent) !important; }

/* --- Home intro --------------------------------------------------------- */
.home-intro {
  font-size: 1.1rem;
  line-height: 1.78;
  color: var(--ink);
}

.home-intro p:first-of-type::first-letter {
  font-size: 2.6em;
  float: left;
  line-height: 0.9;
  padding: 0.08em 0.12em 0 0;
  font-weight: 500;
  color: var(--accent);
  font-style: italic;
}

/* --- Research intro ----------------------------------------------------- */
.research-intro {
  font-size: 1.08rem;
  line-height: 1.75;
  padding: 1rem 0 0.4rem;
}

.research-intro ul {
  list-style: none;
  padding-left: 0;
  margin: 1.2rem 0;
}

.research-intro li {
  padding: 0.7rem 1rem;
  border-left: 3px solid var(--accent);
  margin-bottom: 0.6rem;
  background-color: var(--bg-soft);
  border-radius: 0 4px 4px 0;
}

/* --- Project cards ------------------------------------------------------ */
.project-card {
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 1.6rem 1.8rem;
  margin: 1.4rem 0;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  border-color: #d4d3cf;
  box-shadow: var(--shadow);
}

.project-card .project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.3rem;
}

.project-card h3 {
  margin: 0 !important;
  font-size: 1.32rem !important;
  font-weight: 600;
  color: var(--ink) !important;
}

.project-card .project-subtitle {
  font-style: italic;
  color: var(--ink-soft);
  margin: 0.2rem 0 1rem;
  font-size: 1rem;
  line-height: 1.4;
}

.project-card p {
  margin-bottom: 0.8em;
  font-size: 1.02rem;
}

.project-card strong:first-child {
  color: var(--ink);
  font-variant: small-caps;
  letter-spacing: 0.05em;
  font-weight: 600;
  font-size: 0.95em;
}

/* --- Status badges ------------------------------------------------------ */
.status {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.28rem 0.7rem;
  border-radius: 4px;
  white-space: nowrap;
  align-self: center;
}

.status-award      { background: rgba(184, 137, 58, 0.10); color: var(--gold); }
.status-published  { background: rgba(110, 127, 92, 0.10); color: var(--sage); }
.status-review     { background: rgba(168, 71, 43, 0.08); color: var(--accent); }
.status-progress   { background: var(--bg-soft); color: var(--ink-soft); }
.status-conference { background: rgba(110, 127, 92, 0.08); color: var(--sage); }

/* --- Publications ------------------------------------------------------- */
.pub-section { margin: 1.5rem 0 2.2rem; }

.pub-entry {
  padding: 1rem 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.pub-entry:last-child { border-bottom: none; }

.pub-entry .pub-title {
  font-weight: 600;
  color: var(--ink);
  font-size: 1.08rem;
  margin-bottom: 0.2rem;
  display: block;
}

.pub-entry .pub-authors {
  color: var(--ink-soft);
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.pub-entry .pub-authors .me {
  font-weight: 600;
  color: var(--ink);
}

.pub-entry .pub-venue {
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.pub-entry .pub-tag {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.18rem 0.55rem;
  border-radius: 3px;
  margin-left: 0.5rem;
  vertical-align: middle;
  background: rgba(184, 137, 58, 0.10);
  color: var(--gold);
}

/* --- CV page ------------------------------------------------------------ */
.cv-section { margin: 1.4rem 0 2rem; }

.cv-entry {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.2rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.cv-entry:last-child { border-bottom: none; }

.cv-entry .cv-date {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  color: var(--ink-faint);
  padding-top: 0.2rem;
}

.cv-entry .cv-content .cv-title {
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 0.15rem;
}

.cv-entry .cv-content .cv-sub {
  color: var(--ink-soft);
  font-style: italic;
  font-size: 0.98rem;
}

.cv-download {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.55rem 1.1rem;
  background: var(--bg-soft) !important;
  color: var(--ink) !important;
  border: 1px solid var(--hairline) !important;
  border-radius: 5px;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none !important;
  transition: background 0.15s ease;
}

.cv-download:hover {
  background: var(--bg-hover) !important;
  border-color: #d4d3cf !important;
  color: var(--ink) !important;
}

/* --- Blockquotes & code ------------------------------------------------- */
.page__content blockquote {
  border-left: 3px solid var(--accent);
  background: var(--bg-soft);
  padding: 0.8rem 1.2rem;
  font-style: italic;
  color: var(--ink-soft);
  margin: 1.4rem 0;
  border-radius: 0 4px 4px 0;
}

.page__content code {
  background: var(--bg-soft);
  color: var(--accent);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-size: 0.92em;
}

/* --- Footer ------------------------------------------------------------- */
.page__footer {
  background-color: var(--bg) !important;
  border-top: 1px solid var(--hairline);
  color: var(--ink-faint);
}

.page__footer a {
  color: var(--ink-soft) !important;
  border-bottom: none !important;
}

.page__footer a:hover { color: var(--accent) !important; }

/* --- Responsive --------------------------------------------------------- */
@media (max-width: 768px) {
  .project-card { padding: 1.3rem 1.1rem; }
  .project-card .project-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .page__title { font-size: 2rem; }
  .cv-entry {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

#theme-icon { display: none !important; }