:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --brand: #2A9D8F;
  --accent: #8B1A2E;
  --border: rgba(0, 0, 0, 0.12);
}

* { box-sizing: border-box; }

/* Smooth scrolling for better navigation */
html {
  scroll-behavior: smooth;
}

html, body { height: 100%; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: #ffffff;
}

/* Skip Links for Accessibility */
.skip-links {
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 1000;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 8px;
  padding: 8px 16px;
  background: #1A3660;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(26, 54, 96, 0.3);
}

.skip-link:focus {
  top: 8px;
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.skip-link + .skip-link {
  margin-left: 120px;
}

/* Focus styles for better accessibility */
*:focus {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

button:focus,
a:focus {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: fixed; /* switch to fixed to pin to viewport reliably */
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000; /* raised so animated/transformed content cannot overlap the header */
  background: #1A3660;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Prevent header from covering page content */
.site-header + main {
  padding-top: 64px; /* matches .header-inner height */
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.04em;
}

.nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  padding: 6px 10px;
}

.nav-list {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav-list a:hover { color: var(--brand); }

.section {
  padding: 56px 0;
}

.section-alt {
  background: #f9fafb;
}

/* Alternate section backgrounds: odd -> white, even -> grey */
main > section:nth-of-type(odd) { background: #ffffff; }
main > section:nth-of-type(even) { background: #f5f7fa; }

.hero {
  padding-top: 8px;
  padding-bottom: 40px;
  background: linear-gradient(180deg, #ffffff 0%, #e8f4f2 55%, #dce8f5 100%) !important;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.hebrew-u-logo {
  max-width: 90px;
}

.inline-logo {
  display: inline-block;
  vertical-align: middle;
  height: 56px;
  width: auto;
  max-width: none;
  margin-left: 8px;
}

.hero-title-logo {
  max-width: 480px;
  max-height: 300px;
  width: auto;
  height: auto;
  margin: 0 auto 2px auto;
  display: block;
}

.subtitle {
  margin: 0 0 16px 0;
  color: #4b5563;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.highlight {
  display: inline-block;
  background: rgba(42, 157, 143, 0.08);
  color: var(--brand);
  padding: 6px 10px;
  border: 1px solid rgba(42, 157, 143, 0.25);
  border-radius: 10px;
  font-weight: 700;
}

.meta { margin-top: 16px; }
.meta p { margin: 6px 0; }
.note { color: var(--muted); }

h2 {
  margin-top: 0;
  position: relative;
  padding-bottom: 14px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #111827;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, #8B1A2E 0%, #2A9D8F 100%);
}

.bullets {
  padding-left: 18px;
}

.placeholder-card {
  margin-top: 16px;
  padding: 16px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.program-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.talk {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: start;
  gap: 14px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #ffffff;
}

.talk-break { 
  background: #f5f5f5;
  border-left: 4px solid #9ca3af;
}

.talk-keynote {
  background: linear-gradient(135deg, #f0faf9 0%, #e6f7f5 100%);
  border-left: 4px solid var(--brand);
}

.talk-oral {
  background: linear-gradient(135deg, #fef3c7 0%, #fef9e7 100%);
  border-left: 4px solid #f59e0b;
}

.talk-poster {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  border-left: 4px solid #10b981;
}

/* Ari Rappoport Memorial: dignified maroon-themed styling */
.talk-memorial {
  background: linear-gradient(135deg, #fff8f9 0%, #fff0f2 100%);
  border-left: 4px solid #7f1d1d; /* maroon accent */
}

.talk-memorial .talk-title {
  color: #7f1d1d;
}

.talk-memorial .talk-meta,
.talk-memorial .talk-time {
  color: var(--muted);
}

.talk-panel {
  background: linear-gradient(135deg, #fae8ff 0%, #fdf4ff 100%);
  border-left: 4px solid #a855f7;
}

/* Closing remarks styling: Hanukkah-themed blue with a gold accent */
.talk-closing {
  /* Gold background with subtle warmth; keep blue accent on the left */
  background: linear-gradient(135deg, #fff8eb 0%, #fff3df 100%);
  border-left: 4px solid #0b4ea6; /* Hanukkah blue accent */
}

.talk-closing .talk-title {
  color: #08306b; /* deep Hanukkah blue for good contrast */
}

/* Restore meta/time to muted color for readability against gold */
.talk-closing .talk-meta,
.talk-closing .talk-time {
  color: var(--muted);
}

.talk-time {
  font-weight: 700;
  color: var(--muted);
}

.talk-title {
  font-weight: 700;
  color: var(--text);
}

.talk-meta {
  color: var(--muted);
}

/* Oral Session Papers Styling */
.oral-papers {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.oral-paper {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 8px;
  border-left: 3px solid #f59e0b;
  transition: all 0.2s ease;
}

.oral-paper:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateX(4px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.paper-title {
  font-weight: 600;
  color: #111827;
  font-size: 15px;
  line-height: 1.5;
  margin-bottom: 6px;
}

.paper-authors {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.4;
  font-style: italic;
}

.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.committee-member {
  padding: 16px 16px 16px 20px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--brand);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-left-color 0.2s ease;
  opacity: 0;
}

.committee-member:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(42, 157, 143, 0.15);
  background: rgba(42, 157, 143, 0.04);
  border-left-color: #8B1A2E;
}

.member-name {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.member-name a {
  color: var(--brand);
  text-decoration: none;
}

.member-name a:hover {
  text-decoration: underline;
}

.member-affiliation {
  color: var(--muted);
  font-size: 14px;
}

.contact-note {
  margin-top: 20px;
  padding: 12px 16px;
  background: rgba(42, 157, 143, 0.08);
  border: 1px solid rgba(42, 157, 143, 0.25);
  border-radius: 10px;
  color: var(--text);
}

.contact-note a {
  color: var(--brand);
  text-decoration: none;
}

.contact-note a:hover {
  text-decoration: underline;
}

details a {
  color: var(--brand);
  text-decoration: none;
}

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

/* FAQ Details Styling */
details {
  margin-bottom: 16px;
  padding: 16px 16px 16px 20px;
  border: 1px solid var(--border);
  border-left: 3px solid transparent;
  border-radius: 8px;
  background: var(--card);
  transition: all 0.2s ease;
}

details:hover {
  border-color: var(--brand);
  border-left-color: var(--brand);
  box-shadow: 0 2px 8px rgba(42, 157, 143, 0.1);
}

details[open] {
  border-left-color: #1A3660;
  background: rgba(26, 54, 96, 0.03);
  box-shadow: 0 2px 12px rgba(26, 54, 96, 0.08);
}

details summary {
  font-weight: 600;
  cursor: pointer;
  padding: 4px 0;
  color: var(--text);
  transition: color 0.2s ease;
  list-style: none;
  position: relative;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary::before {
  content: "▶";
  display: inline-block;
  margin-right: 8px;
  transition: transform 0.2s ease;
  color: var(--brand);
}

details[open] summary::before {
  transform: rotate(90deg);
}

details summary:hover {
  color: var(--brand);
}

details p {
  margin: 12px 0 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  line-height: 1.6;
}

details ul {
  margin: 12px 0 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

details ul li {
  margin-bottom: 8px;
}

/* Sponsors Section */
.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin: 24px 0;
}

.sponsor-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  transition: all 0.2s ease;
  min-height: 140px;
}

.sponsor-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  border-color: var(--brand);
}

.sponsor-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sponsor-logo img {
  max-width: 200px;
  max-height: 100px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.sponsor-info h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

.sponsor-info p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.sponsor-note {
  margin-top: 32px;
  padding: 16px;
  background: var(--bg-alt);
  border-radius: 8px;
  text-align: center;
}

.sponsor-note p {
  margin: 0;
  font-style: italic;
  color: var(--muted);
}

.sponsor-note a {
  color: var(--brand);
  text-decoration: none;
}

.sponsor-note a:hover {
  text-decoration: underline;
}

/* Font Awesome icon styling */
.fab.fa-x-twitter {
  margin-right: 2px;
  color: inherit;
}

.fab.fa-twitter {
  margin-right: 2px;
  color: inherit;
}

/* Ensure icons display inline with text */
i.fab {
  display: inline;
  font-style: normal;
}

/* Intel sponsor with blue background */

.sponsor-item:nth-child(5) {
  background: #1D68B5;
}

.sponsor-item:nth-child(5):hover {
  background: #1D68B5;
  border-color: #ffffff;
}

/* BIU Sponsor specific styling */
.sponsor-item:nth-child(5) {
  max-width: 1000px;
  max-height: 600px;
}

/* .sponsor-item:nth-child(5):hover {
  background: #0A4128;
  border-color: #ffffff;
} */

.sponsor-item:nth-child(2) .sponsor-logo img {
  max-width: 170px;
  max-height: 100px;
}

.sponsor-item:nth-child(4) .sponsor-logo img {
  max-width: 100px;
  max-height: 100px;
}

/* IBM logo size adjustment */

.sponsor-item:nth-child(6) .sponsor-logo img {
  max-width: 120px;
  max-height: 120px;
}

.sponsor-item:nth-child(11) .sponsor-logo img {
  max-width: 200px;
  max-height: 200px;
}

@media (max-width: 720px) {
  .talk { grid-template-columns: 1fr; }
}

.site-footer {
  border-top: none;
  background: #1A3660;
  color: rgba(255, 255, 255, 0.7);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
}

.footer-inner strong {
  color: #ffffff;
}

.footer-links { display: flex; gap: 16px; }

.footer-links a { color: rgba(255, 255, 255, 0.6); text-decoration: none; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--brand); }

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--brand);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(42, 157, 143, 0.3);
  transition: all 0.3s ease;
  z-index: 100;
}

.back-to-top:hover {
  background: #1d7a6e;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(42, 157, 143, 0.4);
}

.back-to-top.visible {
  display: flex;
  animation: fadeInUp 0.3s ease;
}

/* Loading animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Page load animation */
.section {
  animation: fadeIn 0.6s ease-in-out;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-block;
    padding: 12px;
    font-size: 18px;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 44px;
    min-height: 44px;
  }

  .nav-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--brand);
  }

  .nav-list {
    display: none;
    position: absolute;
    right: 20px;
    top: 64px;
    flex-direction: column;
    background: #1A3660;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    min-width: 200px;
    animation: fadeInUp 0.2s ease;
    z-index: 1001; /* ensure mobile dropdown sits above page content */
  }
  
  .nav-list.open {
    display: flex;
    /* Use fixed positioning when open to avoid being clipped or overlapped
       by other page content or stacking contexts while the user scrolls. */
    position: fixed;
    top: 64px;
    right: 20px;
    left: auto;
    margin: 0;
    z-index: 1001;
    background: #1A3660;
  }
  
  .nav-list li {
    margin: 0;
  }
  
  .nav-list a {
    display: block;
    padding: 12px 16px;
    margin: 4px 0;
    border-radius: 6px;
    transition: all 0.2s ease;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  
  .nav-list a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--brand);
  }
  
  .hero-grid { 
    grid-template-columns: 1fr; 
  }
  
  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
  }
  
  /* Better touch targets on mobile */
  .committee-member a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  
  .contact-note a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 4px 0;
  }
  
  /* Mobile sponsors styling */
  .sponsors-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .sponsor-item {
    padding: 16px;
  }
  
  .sponsor-logo img {
    max-width: 200px;
    max-height: 100px;
  }
  
  /* Mobile posters styling */
  .session-tabs {
    display: grid;
    position: sticky;
    top: 64px;
    background: white;
    z-index: 20;
    padding: 12px 0;
    margin: 0 -20px 20px -20px;
    padding-left: 20px;
    padding-right: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  
  .session-tab {
    padding: 12px 6px;
    font-size: 14px;
  }
  
  .tab-time {
    font-size: 11px;
  }
  
  .sessions-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  
  .session-column {
    display: none;
    margin-bottom: 0;
  }
  
  .session-column.active {
    display: block;
  }
  
  .session-header {
    display: none;
  }
  
  .posters-list {
    gap: 12px;
    margin-top: 0;
  }
  
  .poster-item {
    padding: 16px;
  }
  
  .poster-title {
    font-size: 15px;
    line-height: 1.4;
    margin-bottom: 6px;
  }
  
  .poster-authors {
    font-size: 13px;
    line-height: 1.5;
  }
  
  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
  }
  
  /* Compact footer for mobile */
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
  }
  
  .footer-links {
    flex-wrap: wrap;
    gap: 8px 12px;
    font-size: 13px;
  }
}

/* Tablet layout */
@media (min-width: 721px) and (max-width: 1200px) {
  .session-tabs {
    display: none;
  }
  
  .sessions-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .session-column {
    display: block !important;
  }
  
  .session-header {
    display: block;
    position: static;
    top: auto;
  }
}

/* Posters List Styling */
.session-tabs {
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 24px 0;
}

.session-tab {
  padding: 14px 8px;
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  color: #6b7280;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  line-height: 1.4;
}

.session-tab:hover {
  border-color: #2A9D8F;
  color: #2A9D8F;
}

.session-tab.active {
  background: linear-gradient(135deg, #d1f0ec 0%, #a8e2dc 100%);
  border-color: #2A9D8F;
  color: #1d6b61;
}

.tab-time {
  font-size: 12px;
  font-weight: 500;
  color: inherit;
  opacity: 0.8;
}

.sessions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.session-column {
  display: flex;
  flex-direction: column;
  min-width: 0; /* Prevent overflow */
}

.session-header {
  margin-bottom: 16px;
  padding: 16px 20px;
  border-radius: 10px;
  position: sticky;
  top: 64px;
  background: linear-gradient(135deg, #d1f0ec 0%, #e6f7f5 100%);
  border: 1px solid rgba(42, 157, 143, 0.2);
  box-shadow: 0 2px 8px rgba(42, 157, 143, 0.15);
  z-index: 10;
}

.session-header h2 {
  margin: 0;
  font-size: 22px;
  color: #1d6b61;
}

.session-time {
  color: #2A9D8F;
  font-weight: 600;
  font-size: 16px;
  display: block;
  margin-top: 4px;
}

.posters-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.poster-item {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  max-width: 100%;
  overflow: hidden;
}

.poster-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.poster-title {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.poster-authors {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

/* Abstract Button and Modal Styling */
.abstract-btn {
  margin-top: 10px;
  padding: 8px 16px;
  background: var(--brand);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(42, 157, 143, 0.2);
}

.abstract-btn:hover {
  background: #1d7a6e;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(42, 157, 143, 0.3);
}

.abstract-modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.3s ease;
}

.abstract-content {
  position: relative;
  background-color: white;
  margin: 5% auto;
  padding: 30px;
  border-radius: 12px;
  max-width: 700px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 0.3s ease;
}

.abstract-content h3 {
  margin-top: 0;
  color: var(--brand);
  font-size: 24px;
  border-bottom: 2px solid var(--brand);
  padding-bottom: 10px;
  margin-bottom: 20px;
}

.abstract-content p {
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 16px;
  text-align: justify;
}

.abstract-close {
  position: absolute;
  top: 15px;
  right: 20px;
  color: var(--muted);
  font-size: 32px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.abstract-close:hover {
  color: var(--text);
  background: var(--bg-alt);
}

@media (max-width: 720px) {
  .abstract-content {
    margin: 10% 20px;
    padding: 24px;
    max-width: calc(100% - 40px);
  }

  .abstract-btn {
    font-size: 13px;
    padding: 7px 14px;
  }
}