main {
  margin-top: 0;
  padding-top: 0;
  margin-left: 20px;
  margin-right: 20px; }

body {
  font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #37352c;
  line-height: 1.65;
  font-size: 1em;
  font-weight: 400;
  background-color: #fff6e3;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale; }

html {
  height: auto; }

.tag-note {
  display: inline-block;
  font-size: 0.85em;
  color: #666;
  font-style: italic;
  font-weight: 400;
  margin-right: 0.4em;
  vertical-align: middle; }

.extra-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35em; }

.tag-label {
  display: inline-block;
  background: #fff8e9;
  color: #444;
  font-size: 0.85em;
  font-weight: 400;
  border-radius: 7px;
  padding: 0.08em 0.45em;
  margin: 0 0.13em 0.13em 0;
  box-shadow: 0 1px 1px rgba(127, 10, 32, 0.11), 0 2px 6px rgba(0, 0, 0, 0.06);
  text-decoration: none;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s; }

.tag-label:hover {
  background: #fff7e4;
  color: #7f0a20;
  box-shadow: 0 4px 16px rgba(127, 10, 32, 0.13), 0 2px 8px rgba(0, 0, 0, 0.09);
  text-decoration: underline; }

.section-ribbon {
  display: flex;
  align-items: center;
  gap: 0;
  background: #c8dff5;
  border-left: 6px solid #7f0a20;
  border-radius: 0 8px 8px 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  min-height: 1.9em;
  font-size: 1.5em;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 0;
  margin-top: 0;
  margin-bottom: 0;
  position: relative;
  z-index: 10;
  overflow-x: auto; }

.section-ribbon .ribbon-nav {
  display: flex;
  align-items: center;
  min-width: 0; }

.ribbon-utilities {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.75em;
  padding-right: 0.75em; }

.ribbon-utilities .ribbon-search {
  margin-left: 0; }

.theme-toggle {
  border: none;
  background: transparent;
  color: inherit;
  padding: 0;
  font-size: 0.55em;
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  cursor: pointer; }

.theme-toggle:focus-visible {
  outline: 2px solid #7f0a20;
  outline-offset: 4px; }

.theme-toggle-track {
  position: relative;
  width: 2.75em;
  height: 1.2em;
  border-radius: 999px;
  background: linear-gradient(120deg, rgba(100, 116, 139, 0.15), rgba(100, 116, 139, 0.08));
  display: inline-flex;
  align-items: center;
  padding: 0;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(100, 116, 139, 0.2);
  transition: background 0.2s ease, box-shadow 0.2s ease; }

.theme-toggle-thumb {
  position: absolute;
  top: 50%;
  left: 0;
  width: 1.05em;
  height: 1.05em;
  border-radius: 50%;
  background: #7f0a20;
  box-shadow: 0 2px 6px rgba(127, 10, 32, 0.25);
  transform: translate3d(0, -50%, 0);
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease; }

.theme-toggle--dark .theme-toggle-thumb {
  transform: translate3d(1.7em, -50%, 0);
  background: #fbbf24;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3); }

.theme-toggle--dark .theme-toggle-track {
  background: linear-gradient(120deg, rgba(251, 191, 36, 0.3), rgba(251, 191, 36, 0.15));
  box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.3); }

.theme-toggle-icon {
  font-size: 0.85em;
  line-height: 1;
  color: #64748b;
  transition: color 0.2s ease, opacity 0.2s ease; }

.theme-toggle-icon--sun { color: #f59e0b; }
.theme-toggle-icon--moon { color: #64748b; }
.theme-toggle--dark .theme-toggle-icon--moon { color: #e2e8f0; }
.theme-toggle--dark .theme-toggle-icon--sun { color: #fde68a; }

.sticky-ribbon {
  position: sticky;
  top: 0;
  background: #c8dff5;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1), 0 1px 4px rgba(0, 0, 0, 0.06);
  z-index: 100; }

.ribbon-link {
  font-size: 0.7em;
  font-weight: 600;
  color: #666;
  text-decoration: none;
  padding: 0.15em 0.7em;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
  background: none;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100vw;
  display: inline-flex;
  align-items: center;
  line-height: 1.2; }

.ribbon-link.active {
  color: #7f0a20;
  text-underline-offset: 0.1em;
  background: none;
  cursor: default;
  pointer-events: none;
  text-decoration: underline; }

.ribbon-link.inactive:hover {
  color: #7f0a20;
  background: none; }

.ribbon-sep {
  color: #cbd5e1;
  font-size: 0.9em;
  user-select: none; }

.ribbon-link .fa, .ribbon-link .fas {
  display: inline;
  margin-right: 0.3em;
  line-height: 1; }

.sleek-menu .menu-icon-labeled {
  display: flex;
  align-items: center;
  gap: 0.7em;
  width: 90%;
  min-width: 0;
  padding: 0.55em 1em;
  border-radius: 10px;
  background: #eef5fd;
  color: #37352c;
  font-size: 0.92em;
  margin: 0.15em 0;
  border: none;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  transition: all 0.2s ease;
  text-align: left;
  font-weight: 500;
  text-decoration: none; }

.sleek-menu .menu-icon-labeled:hover {
  background: #d3eaff;
  color: #7f0a20;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(127, 10, 32, 0.08); }

.sleek-menu .menu-icon-labeled i {
  font-size: 1.1em;
  color: #7f0a20;
  pointer-events: none; }

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 350px;
  background: #e8f2fc;
  box-shadow: 2px 0 16px rgba(0, 0, 0, 0.06), 1px 0 4px rgba(0, 0, 0, 0.03);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow-y: auto; }

.sidebar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2em 1.5em 1.5em;
  height: 100%; }

.sidebar-logo {
  width: 205px;
  height: 205px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.5em;
  margin-top: 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 4px solid #eef5fd; }

.sidebar-author {
  font-size: 1.75em;
  font-weight: 700;
  margin: 0.3em 0 0.4em;
  text-align: center;
  letter-spacing: -0.02em; }

.modern-tagline {
  background: #eef5fd;
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  padding: 0.8em 1.2em;
  margin-top: 0.5em;
  margin-bottom: 1.2em;
  color: #37352c;
  font-size: 0.98em;
  display: flex;
  flex-direction: column;
  gap: 0.15em;
  width: 100%;
  min-width: 0;
  align-items: flex-start;
  text-align: left;
  box-sizing: border-box; }

.modern-tagline .tagline-title {
  font-size: 0.96em;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5em;
  margin-bottom: 0;
  color: #37352c;
  flex-wrap: wrap; }

.modern-tagline .tagline-row {
  display: flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.95em;
  color: #37352c;
  font-weight: 500; }

.modern-tagline .tagline-row a {
  color: #7f0a20;
  text-decoration: none; }

.modern-tagline .tagline-row a:hover { text-decoration: underline; }

.modern-tagline .tagline-sub {
  font-size: 0.95em;
  font-weight: 400;
  color: #666;
  margin-left: 0.3em; }

.modern-tagline i {
  min-width: 1.2em;
  text-align: center;
  color: #7f0a20;
  opacity: 0.9; }

.sidebar-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4em;
  width: 100%;
  margin-top: 0; }

.main-content {
  margin-left: 350px;
  padding: 0 2.5vw;
  min-height: 100vh; }

.paper-card .status-journal {
  color: #666;
  font-size: 0.95em;
  margin-bottom: 0.3em; }

.paper-card .journal-version {
  color: #666;
  font-size: 0.95em;
  margin-bottom: 0.3em; }

.paper-card .journal-bold {
  font-weight: 600;
  color: #37352c;
  margin-top: 0.1em; }

.paper-card {
  background: #eef5fd;
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  margin: 1em 0;
  padding: 1.25em 1.5em;
  transition: all 0.2s ease;
  border: none; }

.paper-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px); }

.paper-card h3, .paper-card h4, .paper-card h5 {
  margin-top: 0;
  margin-bottom: 0.4em;
  font-size: 1.1em;
  font-weight: 600;
  letter-spacing: -0.01em; }

.paper-card .fa-file-alt, .paper-card .fa-book, .paper-card .fa-pencil-alt {
  margin-right: 0.4em;
  color: #7f0a20; }

.paper-card .extra-links {
  margin-top: 0.6em;
  font-size: 0.95em; }

.paper-card .authors {
  color: #666;
  font-size: 0.95em;
  margin-bottom: 0.25em; }

.paper-card .version {
  font-size: 0.92em;
  color: #666;
  margin-bottom: 0.2em; }

.status-light {
  font-weight: 400;
  color: #666; }

a:link, a:visited, a:hover, a:active {
  color: #7f0a20;
  text-decoration: none; }

a:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
  transition: all 0.2s ease; }

.author-name { font-weight: 500; }

.poweredby {
  font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  color: #666;
  text-align: right;
  padding-bottom: 0;
  background: none;
  font-size: 0.6em; }

:root { --sticky-ribbon-height: 0px; }

.section-ribbon .ribbon-search {
  margin-left: auto;
  position: relative;
  min-height: 2em;
  padding: 0 1em;
  cursor: pointer;
  max-width: 2.4em;
  transition: max-width 220ms ease, background-color 160ms ease, opacity 160ms ease;
  background: transparent;
  display: flex;
  align-items: center;
  overflow: hidden;
  height: var(--ribbon-cap-height, 2em);
  z-index: 0;
  isolation: isolate; }

.section-ribbon .ribbon-search::before {
  content: "\f002";
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: #7f0a20;
  font-size: 0.95em;
  line-height: 1;
  pointer-events: none;
  z-index: 2; }

.section-ribbon .ribbon-search::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 2px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(127, 10, 32, 0.4), rgba(127, 10, 32, 0.1));
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
  z-index: 0; }

.section-ribbon .ribbon-search.open {
  max-width: clamp(240px, 38vw, 460px);
  cursor: text;
  background: transparent;
  height: var(--ribbon-cap-height, 2em); }

.section-ribbon .ribbon-search.open::after { opacity: 1; }

.section-ribbon .ribbon-search.open::before {
  opacity: 1;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 25px; }

.section-ribbon .ribbon-search .search-container { position: relative; }

#paper-search {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  padding: 0 2.1em 0 0.8em;
  font: inherit;
  display: none;
  height: calc(var(--ribbon-cap-height, 2em) - 0.6em);
  line-height: 1.2;
  position: relative;
  z-index: 1;
  box-sizing: border-box; }

.ribbon-search.open #paper-search { display: block; padding-left: 30px; }

.ribbon-search.open #paper-search::placeholder {
  font-family: 'SF Mono', 'SFMono-Regular', ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 1em;
  letter-spacing: 0.01em;
  opacity: 0.6;
  color: #666; }

.ribbon-search.open #paper-search {
  caret-color: #7f0a20;
  font-family: 'SF Mono', 'SFMono-Regular', ui-monospace, Menlo, Monaco, Consolas, monospace;
  color: #37352c;
  font-size: 0.6em; }

#clear-search {
  position: absolute;
  right: 0.35em;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1em;
  z-index: 3;
  width: 2em;
  height: 2em;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  color: #666; }

.ribbon-search:not(.open) #clear-search { display: none !important; }

/* Dark theme */
html[data-theme="dark"] { background: #0f1419; }
html[data-theme="dark"] body { background: #0f1419; color: #e8dfd4; }
html[data-theme="dark"] a { color: #e28763; }
html[data-theme="dark"] a:hover { color: #eca183; }
html[data-theme="dark"] h1, html[data-theme="dark"] h2, html[data-theme="dark"] h3 { color: #f3ebe1; }
html[data-theme="dark"] h4, html[data-theme="dark"] h5, html[data-theme="dark"] h6 { color: #e3d7c6; }
html[data-theme="dark"] .section-ribbon { background: #1a2028; border-left-color: #e28763; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
html[data-theme="dark"] .sticky-ribbon { background: #1a2028; box-shadow: 0 1px 8px rgba(0,0,0,0.3); }
html[data-theme="dark"] .ribbon-link { color: #b8a898; }
html[data-theme="dark"] .ribbon-link.active { color: #e28763; background: transparent; }
html[data-theme="dark"] .ribbon-link.inactive:hover { color: #e28763; background: transparent; }
html[data-theme="dark"] .ribbon-sep { color: #2c3744; }
html[data-theme="dark"] .ribbon-search { background: transparent; }
html[data-theme="dark"] .ribbon-search::before { color: #e28763; }
html[data-theme="dark"] .ribbon-search.open { background: rgba(226,135,99,0.08); }
html[data-theme="dark"] .ribbon-search::after { background: linear-gradient(180deg, rgba(226,135,99,0.5), rgba(226,135,99,0.1)); }
html[data-theme="dark"] #paper-search { color: #f3ebe1; caret-color: #e28763; }
html[data-theme="dark"] .ribbon-search.open #paper-search { color: #f3ebe1 !important; }
html[data-theme="dark"] .ribbon-search.open #paper-search::placeholder { color: #8a7a6a; }
html[data-theme="dark"] .sidebar { background: #121820; box-shadow: 2px 0 20px rgba(0,0,0,0.4); }
html[data-theme="dark"] .sleek-menu .menu-icon-labeled { background: #1a2028; color: #e8dfd4; }
html[data-theme="dark"] .sleek-menu .menu-icon-labeled:hover { background: #242d38; color: #e28763; }
html[data-theme="dark"] .sleek-menu .menu-icon-labeled i { color: #e28763; }
html[data-theme="dark"] .modern-tagline { background: #1a2028; color: #e8dfd4; }
html[data-theme="dark"] .modern-tagline .tagline-title, html[data-theme="dark"] .modern-tagline .tagline-row { color: #e8dfd4; }
html[data-theme="dark"] .modern-tagline .tagline-sub { color: #a89888; }
html[data-theme="dark"] .modern-tagline i { color: #e28763; }
html[data-theme="dark"] .modern-tagline .tagline-row a { color: #e28763; }
html[data-theme="dark"] .modern-tagline .tagline-row a:hover { color: #eca183; }
html[data-theme="dark"] .paper-card h3, html[data-theme="dark"] .paper-card h4, html[data-theme="dark"] .paper-card h5 { color: #f2e7d5; }
html[data-theme="dark"] .paper-card { background: #1a2028; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
html[data-theme="dark"] .paper-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.3); }
html[data-theme="dark"] .paper-card .authors, html[data-theme="dark"] .paper-card .version, html[data-theme="dark"] .paper-card .status-journal, html[data-theme="dark"] .paper-card .journal-version { color: #b8a898; }
html[data-theme="dark"] .paper-card .journal-bold { color: #e0c8a8; }
html[data-theme="dark"] .paper-card h4 a { color: #e28763; }
html[data-theme="dark"] .paper-card h4 a:hover { color: #eca183; }
html[data-theme="dark"] .paper-card .fa-file-alt, html[data-theme="dark"] .paper-card .fa-book, html[data-theme="dark"] .paper-card .fa-pencil-alt { color: #e28763; }
html[data-theme="dark"] .tag-label { background: rgba(226,135,99,0.16); color: #e28763; box-shadow: 0 6px 18px rgba(0,0,0,0.55); }
html[data-theme="dark"] .tag-label:hover { background: rgba(226,135,99,0.24); color: #eca183; }
html[data-theme="dark"] .tag-note { color: #8a7a6a; }
html[data-theme="dark"] .sidebar-author { color: #f3ebe1; }
html[data-theme="dark"] .sidebar-logo { box-shadow: 0 4px 20px rgba(0,0,0,0.4); border-color: #1a2028; }
html[data-theme="dark"] .poweredby { color: #8a7a6a; }
html[data-theme="dark"] #clear-search { color: #a89888; }

/* Responsive */
@media (max-width: 900px) {
  .sidebar { width: 100vw; position: static; border-radius: 0; border-right: none; border-bottom: 1px solid #e8e0d0; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
  .modern-tagline { font-size: 0.96em; }
  .main-content { margin-left: 0; margin-top: 25px; padding: 0 1vw; }
  html[data-theme="dark"] .sidebar { border-bottom: 1px solid #1e293b; box-shadow: 0 1px 8px rgba(0,0,0,0.3); }
}

@media (max-width: 700px) {
  .sidebar { height: auto; max-height: none; overflow: visible; position: static; width: 100vw; border-radius: 0; box-shadow: none; }
  .section-ribbon { font-size: 1.2em; }
  .ribbon-utilities { width: auto; gap: 0.45em; padding-right: 0.4em; }
  .theme-toggle { font-size: 0.48em; }
  .theme-toggle-track { width: 2.35em; height: 1.05em; }
  .theme-toggle-thumb { width: 0.92em; height: 0.92em; }
  .theme-toggle--dark .theme-toggle-thumb { transform: translate3d(1.35em, -50%, 0); }
  .ribbon-link { font-size: 0.95em; padding: 0.1em 0.4em; }
  .ribbon-link.inactive .ribbon-label { display: none; }
  .ribbon-link.active .ribbon-label { display: inline; }
  .paper-card { padding: 0.9em !important; }
  body.search-open .section-ribbon.sticky-ribbon .ribbon-label { display: none; }
  body.search-open .section-ribbon.sticky-ribbon .ribbon-utilities { flex: 1 1 auto; width: 100%; }
  body.search-open .section-ribbon.sticky-ribbon .ribbon-search { max-width: none; width: 100%; flex: 1 1 auto; margin-left: 0; }
  body.search-open .section-ribbon.sticky-ribbon .theme-toggle { display: none; }
  body.search-open .section-ribbon.sticky-ribbon .ribbon-nav { display: none; }
}

/* ---- Expandable abstract ---- */
details.abstract-details {
  /* sits inside .extra-links flex container */
}

details.abstract-details[open] {
  flex-basis: 100%;  /* force it onto its own row when open */
  width: 100%;
}

details.abstract-details > summary {
  list-style: none;
  -webkit-appearance: none;
  cursor: pointer;
  display: inline-block;
  background: #fff8e9;
  color: #444;
  font-size: 0.85em;
  font-weight: 400;
  border-radius: 7px;
  padding: 0.08em 0.45em;
  margin: 0 0.13em 0.13em 0;
  box-shadow: 0 1px 1px rgba(127,10,32,0.11), 0 2px 6px rgba(0,0,0,0.06);
  transition: background 0.18s, color 0.18s, box-shadow 0.18s;
  font-family: inherit;
}

details.abstract-details > summary::-webkit-details-marker { display: none; }
details.abstract-details > summary::marker { display: none; }

details.abstract-details > summary:hover {
  background: #fff7e4;
  color: #7f0a20;
  box-shadow: 0 4px 16px rgba(127,10,32,0.13), 0 2px 8px rgba(0,0,0,0.09);
}

.abstract-text {
  font-size: 0.92em;
  line-height: 1.65;
  color: #555;
  margin-top: 0.55em;
  margin-bottom: 0;
  padding-left: 0.8em;
  border-left: 2px solid rgba(127,10,32,0.2);
}

html[data-theme="dark"] details.abstract-details > summary {
  background: rgba(226,135,99,0.16);
  color: #e28763;
  box-shadow: 0 6px 18px rgba(0,0,0,0.55);
}

html[data-theme="dark"] details.abstract-details > summary:hover {
  background: rgba(226,135,99,0.24);
  color: #eca183;
}

html[data-theme="dark"] .abstract-text {
  color: #b8a898;
  border-left-color: rgba(226,135,99,0.3);
}