:root {
  /* Cursor-like tokens: small palette, 8px radius, very soft shadows */
  --site-bg: #ffffff;
  --site-surface: rgba(249, 250, 251, 0.7);
  --site-border: rgba(16, 24, 40, 0.12);
  --site-text: #101828;
  --site-muted: rgba(16, 24, 40, 0.72);

  --site-link: #2761e3;
  --site-link-hover: #1f4eb6;
  --site-focus-ring: rgba(39, 97, 227, 0.35);

  --site-accent: #b01928;
  --site-accent-hover: #801323;

  --site-content-max: 72ch;
  --site-radius: 8px;
  --site-radius-lg: 12px;
  --site-shadow-flyout: 0 0 1rem rgba(0, 0, 0, 0.05),
    0 0 0.5rem rgba(0, 0, 0, 0.02);

  --site-nav-bg: rgba(255, 255, 255, 0.75);
  --site-nav-bg-solid: #ffffff;
}

body.quarto-dark {
  color-scheme: dark;

  --site-bg: #0b0f14;
  --site-surface: rgba(17, 24, 39, 0.65);
  --site-border: rgba(255, 255, 255, 0.14);
  --site-text: #e6edf3;
  --site-muted: rgba(230, 237, 243, 0.75);

  --site-link: #4ea1ff;
  --site-link-hover: #78b7ff;
  --site-focus-ring: rgba(78, 161, 255, 0.35);

  --site-accent: #ea384c;
  --site-accent-hover: #ff5a6d;

  --site-nav-bg: rgba(11, 15, 20, 0.72);
  --site-nav-bg-solid: #0b0f14;
}

/* Map tokens to Bootstrap + Quarto variables */
:root {
  --bs-font-sans-serif: Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bs-body-font-family: var(--bs-font-sans-serif);
  --bs-root-font-size: 16px;
  --bs-body-line-height: 1.6;

  --bs-body-bg: var(--site-bg);
  --bs-body-color: var(--site-text);
  --bs-emphasis-color: var(--site-text);
  --bs-secondary-color: var(--site-muted);
  --bs-border-color: var(--site-border);
  --bs-border-color-translucent: var(--site-border);

  --bs-link-color: var(--site-link);
  --bs-link-hover-color: var(--site-link-hover);
  --bs-focus-ring-color: var(--site-focus-ring);

  --quarto-body-bg: var(--site-bg);
  --quarto-body-color: var(--site-text);
  --quarto-text-muted: var(--site-muted);
  --quarto-border-color: var(--site-border);
}

body.quarto-dark {
  --bs-body-bg: var(--site-bg);
  --bs-body-color: var(--site-text);
  --bs-emphasis-color: var(--site-text);
  --bs-secondary-color: var(--site-muted);
  --bs-border-color: var(--site-border);
  --bs-border-color-translucent: var(--site-border);

  --bs-link-color: var(--site-link);
  --bs-link-hover-color: var(--site-link-hover);
  --bs-focus-ring-color: var(--site-focus-ring);

  --quarto-body-bg: var(--site-bg);
  --quarto-body-color: var(--site-text);
  --quarto-text-muted: var(--site-muted);
  --quarto-border-color: var(--site-border);
}

/* 1) Tighter content width + calmer spacing rhythm */
main#quarto-document-content {
  max-width: var(--site-content-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 1.5rem);
}

/* 2) Intentional type scale (Cursor-like: snug headings, calm body) */
.content {
  letter-spacing: 0.005em;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#title-block-header .title,
.content h1,
.content .h1 {
  font-size: clamp(1.9rem, 3.2vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.content h2,
.content .h2 {
  font-size: 1.45rem;
  line-height: 1.25;
  letter-spacing: -0.0125em;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  border-bottom: none;
}

.content h3,
.content .h3 {
  font-size: 1.2rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-top: 1.75rem;
  margin-bottom: 0.6rem;
}

.content p,
.content ul,
.content ol {
  margin-bottom: 0.9rem;
}

.content li > p {
  margin-bottom: 0.25rem;
}

.content li:last-child > p {
  margin-bottom: 0;
}

.content ul ul,
.content ul ol,
.content ol ul,
.content ol ol {
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
}

/* 4) Subtle nav: translucent + blur + faint border */
#quarto-header .navbar {
  background-color: var(--site-nav-bg-solid);
  border-bottom: 1px solid var(--site-border);
  padding-block: 0.6rem;
}

#quarto-header .navbar-container {
  max-width: var(--site-content-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 1.5rem);
}

@supports ((-webkit-backdrop-filter: blur(12px)) or (backdrop-filter: blur(12px))) {
  #quarto-header .navbar {
    background-color: var(--site-nav-bg);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    backdrop-filter: blur(12px) saturate(180%);
  }
}

#quarto-header .navbar .nav-link {
  color: var(--site-muted);
  transition: color 0.14s ease;
}

#quarto-header .navbar .nav-link:hover,
#quarto-header .navbar .nav-link:focus {
  color: var(--site-text);
}

#quarto-header .navbar .nav-link.active {
  color: var(--site-link);
}

/* 5) Reduce title redundancy on the homepage */
body.home #title-block-header {
  display: none;
}

/* 6) Section spacing instead of divider lines */
hr {
  display: none;
}

/* 7) Link discipline: blue by default, underline on hover, clear focus */
main a {
  text-decoration: none;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

main a:hover {
  text-decoration: underline;
}

main a:focus-visible {
  outline: 2px solid var(--site-focus-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Accent links (used sparingly) */
a.mats-link,
a.accent-link {
  color: var(--site-accent);
}

a.mats-link:hover,
a.mats-link:focus,
a.accent-link:hover,
a.accent-link:focus {
  color: var(--site-accent-hover);
  text-decoration: underline;
}

/* 8–9) Cards: low-contrast surface + border + soft shadow */
.home-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0 2rem;
}

.site-card {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-lg);
  padding: 1rem 1.1rem;
  box-shadow: var(--site-shadow-flyout);
}

body.quarto-dark .site-card {
  box-shadow: none;
}

.site-card > :last-child {
  margin-bottom: 0;
}

.site-card h4,
.site-card .h4 {
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

/* My Writing: text-first index (no thumbnails) */
#listing-listing.quarto-listing-container-table {
  margin-top: 1.25rem;
}

#listing-listing .quarto-listing-table {
  width: 100%;
  margin: 0;
  border: 0;
}

#listing-listing .quarto-listing-table thead {
  display: none;
}

#listing-listing .quarto-listing-table tbody,
#listing-listing .quarto-listing-table tr,
#listing-listing .quarto-listing-table td {
  border: 0;
}

#listing-listing .quarto-listing-table td {
  padding: 0;
}

#listing-listing .quarto-listing-table tbody tr {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  column-gap: 1.25rem;
  row-gap: 0.2rem;
  padding: 0.95rem 0;
}

#listing-listing .quarto-listing-table td:nth-child(1) {
  grid-column: 1;
  grid-row: 1;
  color: var(--site-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

#listing-listing .quarto-listing-table td:nth-child(2) {
  grid-column: 2;
  grid-row: 1;
}

#listing-listing .quarto-listing-table td:nth-child(3) {
  grid-column: 2;
  grid-row: 2;
  color: var(--site-muted);
}

#listing-listing .listing-title {
  font-weight: 600;
}

@media (max-width: 520px) {
  #listing-listing .quarto-listing-table tbody tr {
    grid-template-columns: 1fr;
    row-gap: 0.3rem;
  }

  #listing-listing .quarto-listing-table td:nth-child(1) {
    grid-column: 1;
    grid-row: 2;
  }

  #listing-listing .quarto-listing-table td:nth-child(2) {
    grid-column: 1;
    grid-row: 1;
  }

  #listing-listing .quarto-listing-table td:nth-child(3) {
    grid-column: 1;
    grid-row: 3;
  }
}

/* Graduate Course Notes: clean list */
.notes-list ul {
  list-style: none;
  padding-left: 0;
  margin: 0.75rem 0 0;
}

.notes-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 0.7rem 0;
}

.notes-list li + li {
  border-top: 1px solid var(--site-border);
}

.notes-list li::after {
  content: "PDF";
  flex: 0 0 auto;
  color: var(--site-muted);
  font-size: 0.95em;
  opacity: 0;
  transform: translateY(-1px);
  transition: opacity 0.12s ease, transform 0.12s ease;
  white-space: nowrap;
}

.notes-list li:hover::after,
.notes-list li:focus-within::after {
  opacity: 1;
  transform: translateY(0);
}

.notes-list a {
  display: inline-block;
  font-weight: 600;
}