*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  font-family: "Poppins", sans-serif;
  color: #333333;
  background: #ffffff;
  margin: 0;
  padding: 0;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.theme-main {
  flex: 1 0 auto;
}

.theme-header {
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 20px;
}
.theme-header .navbar-brand .logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: #1a2a4a;
}
.theme-header .nav-link {
  font-weight: 500;
  color: #333333;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding: 0.6rem 1rem;
}
.theme-header .nav-link:hover {
  color: #1a2a4a;
}
.theme-header .dropdown-menu {
  border: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}
.theme-header .dropdown-item {
  font-size: 0.9rem;
}
.theme-header .dropdown-item:hover {
  background: #f5f5f5;
  color: #1a2a4a;
}

@media (min-width: 992px) {
  .theme-header .nav-item.dropdown:hover .dropdown-menu {
    display: block;
  }
}
.hero-banner {
  position: relative;
  line-height: 0;
}
.hero-banner .hero-banner-img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: top;
}

.countdown-dates-section {
  background: #1a2a4a;
  padding: 0.875rem 0 1rem;
}
.countdown-dates-section .countdown-wrapper {
  margin-bottom: 0.75rem;
}
.countdown-dates-section .countdown-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}
.countdown-dates-section .countdown-item {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 0.4rem 0.6rem;
  min-width: 52px;
  text-align: center;
  transition: background 0.2s ease;
}
.countdown-dates-section .countdown-item:hover {
  background: rgba(255, 255, 255, 0.16);
}
.countdown-dates-section .countdown-value {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
}
.countdown-dates-section .countdown-label {
  display: block;
  font-size: 0.6rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0.1rem;
}
.countdown-dates-section .important-dates-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 1rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.95);
}
.countdown-dates-section .important-date-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.countdown-dates-section .important-date-item i {
  font-size: 0.7rem;
  opacity: 0.85;
}
.countdown-dates-section .important-date-sep {
  color: rgba(255, 255, 255, 0.4);
  font-weight: 400;
  user-select: none;
}
@media (max-width: 479px) {
  .countdown-dates-section .important-date-sep {
    display: none;
  }
}
.countdown-dates-section .important-date-label {
  opacity: 0.9;
}
.countdown-dates-section .important-date-value {
  font-weight: 600;
}
.countdown-dates-section .countdown-ended {
  text-align: center;
  padding: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
}

@media (min-width: 576px) {
  .countdown-dates-section {
    padding: 1rem 0 1.125rem;
  }
  .countdown-dates-section .countdown-wrapper {
    margin-bottom: 1rem;
  }
  .countdown-dates-section .countdown-inner {
    gap: 0.6rem;
  }
  .countdown-dates-section .countdown-item {
    min-width: 58px;
    padding: 0.5rem 0.75rem;
  }
  .countdown-dates-section .countdown-value {
    font-size: 1.25rem;
  }
  .countdown-dates-section .countdown-label {
    font-size: 0.65rem;
  }
  .countdown-dates-section .important-dates-inner {
    font-size: 0.8rem;
  }
}
@media (min-width: 768px) {
  .countdown-dates-section .countdown-item {
    min-width: 64px;
  }
}
.page-section {
  padding-top: 80px;
  padding-bottom: 140px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 2rem;
}

.theme-footer {
  background: #1a2a4a;
  color: #ffffff;
  padding: 3rem 0 1.5rem;
  flex-shrink: 0;
}
.theme-footer .footer-box h3 {
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  color: #ffffff;
}
.theme-footer .footer-box p,
.theme-footer .footer-list,
.theme-footer .footer-links {
  font-size: 0.9rem;
  opacity: 0.9;
  margin: 0;
}
.theme-footer .footer-list {
  list-style: none;
  padding: 0;
}
.theme-footer .footer-list li {
  margin-bottom: 0.5rem;
}
.theme-footer .footer-list li a {
  color: #ffffff;
  text-decoration: none;
}
.theme-footer .footer-list li a:hover {
  text-decoration: underline;
}
.theme-footer .footer-list li i {
  margin-right: 0.5rem;
  width: 1.25rem;
}
.theme-footer .footer-links {
  list-style: none;
  padding: 0;
}
.theme-footer .footer-links li {
  margin-bottom: 0.35rem;
}
.theme-footer .footer-links li a {
  color: #ffffff;
  text-decoration: none;
}
.theme-footer .footer-links li a:hover {
  text-decoration: underline;
}
.theme-footer .footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  opacity: 0.85;
}
.theme-footer .footer-bottom a {
  color: #ffffff;
  text-decoration: none;
}
.theme-footer .footer-bottom a:hover {
  text-decoration: underline;
}

.inner-page-header {
  background: #f5f5f5;
  padding: 3rem 0 2rem;
  margin-bottom: 2rem;
}
.inner-page-header .inner-page-title {
  font-size: 2rem;
  font-weight: 700;
  color: #1a2a4a;
  margin: 0;
}

.abstract-submit-btn {
  max-width: 320px;
  width: 100%;
  height: auto;
  display: inline-block;
}

@media (min-width: 576px) {
  .abstract-submit-btn {
    max-width: 380px;
  }
}
.committees-content .committee-section {
  margin-bottom: 2.5rem;
}
.committees-content .committee-section:last-child {
  margin-bottom: 0;
}
.committees-content .committee-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #1a2a4a;
}
.committees-content .committee-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.committees-content .committee-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid #eee;
}
.committees-content .committee-list li:last-child {
  border-bottom: none;
}
.committees-content .committee-table {
  margin-bottom: 0;
}
.committees-content .committee-table th,
.committees-content .committee-table td {
  vertical-align: middle;
  padding: 0.6rem 1rem;
}
.committees-content .committee-table thead th {
  background: #1a2a4a;
  color: #ffffff;
  font-weight: 600;
  border: none;
}
.committees-content .committee-table tbody tr:nth-of-type(odd) {
  background: rgba(26, 42, 74, 0.04);
}

.table-content .table {
  margin-bottom: 0;
}
.table-content .table th,
.table-content .table td {
  vertical-align: top;
  padding: 1rem;
}
.table-content .table thead th {
  background: #1a2a4a;
  color: #ffffff;
  font-weight: 600;
  border: none;
}
.table-content .table .table-striped tbody tr:nth-of-type(odd) {
  background: rgba(26, 42, 74, 0.04);
}

.btn-primary {
  background: #1a2a4a;
  border-color: #1a2a4a;
}
.btn-primary:hover {
  background: rgb(18.044, 29.148, 51.356);
  border-color: rgb(18.044, 29.148, 51.356);
}

.contact-page .contact-card {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
}

.contact-page .contact-section-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid #1a2a4a;
  display: inline-block;
  letter-spacing: 0.02em;
}

.contact-page .contact-logo {
  padding: 0.5rem 0;
}

.contact-page .contact-logo img {
  max-width: 200px;
  height: auto;
}

@media (max-width: 767.98px) {
  .contact-page .contact-logo img {
    max-width: 160px;
  }
}
.contact-page .contact-details .contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.contact-page .contact-details .contact-item:last-child {
  margin-bottom: 0;
}

.contact-page .contact-details .contact-icon {
  width: 50px;
  height: 50px;
  min-width: 50px;
  background: #1a2a4a;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  flex-shrink: 0;
}
.contact-page .contact-details .contact-icon i {
  font-size: 1.1rem;
}

.contact-page .contact-details .contact-text {
  line-height: 1.5;
}
.contact-page .contact-details .contact-text strong {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6b7280;
  margin-bottom: 0.35rem;
  font-weight: 600;
}
.contact-page .contact-details .contact-text span {
  color: #333333;
  font-size: 0.95rem;
}

.contact-page .contact-details .contact-text a {
  color: #1a2a4a;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease, opacity 0.2s ease;
}
.contact-page .contact-details .contact-text a:hover {
  color: rgb(10.088, 16.296, 28.712);
  text-decoration: underline;
}

.page-section.travel-page,
.page-section.transportation-page {
  background: #ffffff;
}

.travel-content .travel-item,
.travel-content .transportation-item,
.transportation-content .travel-item,
.transportation-content .transportation-item {
  background: #fafbfc;
  border: 1px solid #e8ecf0;
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.travel-content .travel-item h3,
.travel-content .transportation-item h3,
.transportation-content .travel-item h3,
.transportation-content .transportation-item h3 {
  color: #1a2a4a;
  font-weight: 700;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}
.travel-content .travel-item p,
.travel-content .transportation-item p,
.transportation-content .travel-item p,
.transportation-content .transportation-item p {
  margin-bottom: 0.75rem;
  color: #333333;
  line-height: 1.6;
}
.travel-content .travel-item p:last-child,
.travel-content .transportation-item p:last-child,
.transportation-content .travel-item p:last-child,
.transportation-content .transportation-item p:last-child {
  margin-bottom: 0;
}
.travel-content .travel-item ol,
.travel-content .transportation-item ol,
.transportation-content .travel-item ol,
.transportation-content .transportation-item ol {
  padding-left: 1.25rem;
  margin-bottom: 0;
}
.travel-content .travel-item ol li,
.travel-content .transportation-item ol li,
.transportation-content .travel-item ol li,
.transportation-content .transportation-item ol li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}
.travel-content > p:not(.travel-item p):not(.transportation-item p),
.transportation-content > p:not(.travel-item p):not(.transportation-item p) {
  margin-bottom: 1rem;
  line-height: 1.6;
}
.travel-content .transportation-closing,
.transportation-content .transportation-closing {
  margin-top: 1rem;
  margin-bottom: 0;
  line-height: 1.6;
  color: #333333;
}
.travel-content a,
.transportation-content a {
  color: #1a2a4a;
  text-decoration: underline;
}
.travel-content a:hover,
.transportation-content a:hover {
  text-decoration: none;
}

.metro-map-section {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid #e8ecf0;
}
.metro-map-section .metro-map-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 1rem;
}
.metro-map-section .metro-map-wrapper {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  border: 1px solid #e8ecf0;
}
.metro-map-section .metro-map-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.speakers-page .speakers-list {
  border-top: 4px solid #1a2a4a;
}
.speakers-page .speaker-item {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 2rem 0;
  border-bottom: 4px solid #1a2a4a;
}
.speakers-page .speaker-avatar-wrap {
  width: 160px;
  height: 160px;
  flex-shrink: 0;
}
.speakers-page .speaker-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #d7dce5;
}
.speakers-page .speaker-content {
  width: 100%;
}
.speakers-page .speaker-name {
  font-size: 1.45rem;
  font-weight: 700;
  color: #1a2a4a;
  margin: 0 0 0.85rem;
}
.speakers-page .speaker-detail {
  position: relative;
  padding: 0.7rem 0;
  line-height: 1.55;
}
.speakers-page .speaker-detail::after {
  content: "";
  display: block;
  width: 92px;
  height: 1px;
  background: #cfd6e1;
  margin-top: 0.7rem;
}
.speakers-page .speaker-detail:last-child::after {
  display: none;
}
.speakers-page .speaker-topic {
  font-weight: 600;
}

@media (min-width: 768px) {
  .speakers-page .speaker-item {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }
}