* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Geist", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background-color: #ffffff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.header {
  background: linear-gradient(to right, #1e40af, #1e3a8a);
  color: white;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: white;
}

.logo-circle {
  width: 3rem;
  height: 3rem;
  background-color: #bfdbfe;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.25rem;
  color: #1e40af;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: bold;
}

.logo p {
  font-size: 0.75rem;
  color: #dbeafe;
}

.desktop-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
  font-size: 25px;
  font-family: Georgia, serif;
}

.nav-link {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
}

.nav-link:hover {
  color: #fa7d00;
  font-weight: bold;
  
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 24px;
  height: 24px;
  position: relative;
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: white;
  margin: 5px 0;
  transition: 0.3s;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 1rem 0;
}

/* Hero Section */
.hero {
  background: linear-gradient(to bottom right, #1e40af, #1e3a8a, #0f172a);
  color: white;
  padding: 6rem 0;
  text-align: center;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
}

.hero-subtitle {
  /*color: #bfdbfe;*/
  color: whitesmoke;
  margin-bottom: 1rem;
  font-size: 3.125rem;
  font-family: Georgia, serif;
}

.hero-title {
  color: whitesmoke;
  font-size: 3.75rem;
  font-weight: bold;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  font-family: Georgia, serif;  
}

.hero-tagline {
  font-size: 2.5rem;
  color: #dbeafe;
  margin-bottom: 0.5rem;
  font-family: Georgia, serif;  
}

.hero-acronym {
  color: #fa7d00;
  margin-bottom: 2rem;
  font-size: 3rem;
  font-family: Georgia, serif;  
}

.hero-acronym:hover {
  color: #fa7d00;
  font-weight: bold;
}
.hero-details {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  font-size: 1.125rem;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  font-family: Georgia, serif; 
  font-size: 30px;
}

.btn {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 0.5rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-block;
}

.btn-primary {
  background-color: white;
  color: #1e40af;
}

.btn-primary:hover {
  /*background-color: #f3f4f6;*/
  background-color: #fa7d00;
}

.btn-secondary {
  border-color: white;
  color: white;
  background-color: transparent;
}

.btn-secondary:hover {
  /*background-color: #1e3a8a;*/
  background-color: #fa7d00;
  
}

/* Sections */
.section-title {
  font-size: 2.5rem;
  font-weight: bold;
  color: #1e40af;
  margin-bottom: 1.5rem;
  border-bottom: 5px solid #1e40af;
  padding-bottom: 1rem;
  display: inline-block;
  font-family: Georgia, serif;
}

.text-center {
  text-align: center;
}

.text-center.section-title {
  display: block;
}

.text-body {
  color: #4b5563;
  margin-bottom: 1rem;
  line-height: 1.5;
  font-family: Georgia, serif;
  font-size: 1.5rem;
  text-align: justify;
}

.subtitle {
  color: #6b7280;
  margin-bottom: 3rem;
  font-size: 1.125rem;
}

/* About Section */
.about {
  background-color: white;
  padding: 4rem 0;
}

.section-content {
  margin-bottom: 4rem;
}

/* Org Cards */
.grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2rem;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  font-size: 1.25rem;
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.mt-12 {
  margin-top: 3rem;
}

.org-card {
  text-align: center;
}

.org-image {
  width: 100%;
  height: 15rem;
  /*background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
  border-radius: 0.5rem;*/
  display: flex;
  align-items: center;
  justify-content: center;
  /*border: 2px solid #bfdbfe;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);*/
  overflow: hidden;
  margin-bottom: 1rem;
}

.org-image img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

.org-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1f2937;
}

.info-card {
  background-color: #eff6ff;
  padding: 1.5rem;
  border-radius: 0.5rem;
  border: 1px solid #bfdbfe;
  font-family: Georgia, serif;
}

.info-card:hover {
  border: 2px solid #1e40af;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
}

.info-card h3 {
  color: #1e40af;
  font-weight: 600;
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.info-card p {
  color: #4b5563;
  font-size: 0.9rem;
  line-height: 1.5;
  text-align: justify;
}

/* Key Themes */
.key-themes {
  background-color: #f9fafb;
  padding: 4rem 0;
}

.theme-card {
  background-color: white;
  padding: 1rem;
  border-radius: 0.5rem;
  border-left: 4px solid #1e40af;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: box-shadow 0.3s;
}

.theme-card:hover {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
  border-left: 7px solid #fa7d00;
}

.theme-card p {
  color: #4b5563;
}

/* Who Should Attend */
.who-attend {
  background-color: white;
  padding: 4rem 0;
}

.attendees-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.attendee-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background-color: #eff6ff;
  border-radius: 0.5rem;
  /*border: 1px solid red;*/
  border: 2px solid #1e40af;
}

.attendee-item .icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.attendee-item p {
  color: #4b5563;
  line-height: 1.6;
}

.highlight-box {
  padding: 2rem;
  background: linear-gradient(to right, #eff6ff, #f0f9ff);
  border-radius: 0.5rem;
  border: 1px solid #bfdbfe;
  color: #1f2937;
  line-height: 1.8;
}

/* Features */
.features {
  background-color: white;
  padding: 4rem 0;
}

.feature-card {
  background-color: #f3f4f6;
  padding: 1.5rem;
  border-radius: 0.5rem;
  /*border: 1px solid #e5e7eb;*/
  border: 2px solid #000000;
  font-family: Georgia, serif;
}

.feature-card h3 {
  color: #1f2937;
  font-weight: 600;
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.feature-card p {
  color: #4b5563;
}

/* Important Dates */
.important-dates {
  background-color: #eff6ff;
  padding: 4rem 0;
}

.date-card {
  background-color: white;
  padding: 1.5rem;
  border-radius: 0.5rem;
  border-left: 4px solid #1e40af;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.3s;
}

.date-card:hover {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
  border-left: 5px solid #fa7d00;
}

.date-card .icon {
  color: #1e40af;
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
}

.date-card .label {
font-size: 1.0rem;
  color: #6b7280;
  margin-bottom: 0.5rem;
  font-family: Georgia, serif;
}

.date-card .date {
  font-size: 1.0rem;
  font-weight: bold;
  color: #1f2937;
  font-family: Georgia, serif;
}

/* Registration Fees */
.registration-fees {
  background-color: white;
  padding: 4rem 0;
}

.fees-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.fee-card {
  padding: 2rem;
  border: 2px solid #1e40af;
  border-radius: 0.5rem;
  position: relative;
  font-family: Georgia, serif;
  font-size: 1.0rem;
}

.fee-card.popular {
  border-color: #1e40af;
  background-color: #eff6ff;
}

.fee-card .popular-badge {
  position: absolute;
  top: 0;
  right: 0;
  background-color: #1e40af;
  color: white;
  padding: 0.25rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-bottom-left-radius: 0.5rem;
}

.fee-card h3 {
  font-size: 1.5rem;
  font-weight: bold;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.fee-card .description {
  color: #6b7280;
  margin-bottom: 1.5rem;
}

.fee-card .price {
  font-size: 2.25rem;
  font-weight: bold;
  color: #1e40af;
  margin-bottom: 1.5rem;
}

.fee-card .btn-register {
  width: 100%;
  background-color: #1e40af;
  color: white;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s;
  font-family: Georgia, serif;
  font-size: 1.25rem;
}

.fee-card:hover {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
}

.fee-card .btn-register:hover {
  background-color: #fa7d00;
}

.submission-guidelines {
  background: linear-gradient(to right, #f9fafb, #eff6ff);
  padding: 2rem;
  border-radius: 0.5rem;
  border: 2px solid #000000;
  font-family: Georgia, serif;
}

.submission-guidelines h3 {
  font-size: 1.75rem;
  font-weight: bold;
  color: #1e40af;
  margin-bottom: 1.5rem;
}

.submission-guidelines h4 {
  font-weight: bold;
  color: #1f2937;
  margin-bottom: 1rem;
}

.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  color: #4b5563;
  margin-bottom: 0.5rem;
}

.info-box {
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.info-box.blue {
  background-color: #dbeafe;
  border-left: 4px solid #1e40af;
}

.info-box.green {
  background-color: #dcfce7;
  border-left: 4px solid #15803d;
}

.info-box p {
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.info-box a {
  color: #1e40af;
  text-decoration: none;
  font-weight: 600;
}

.info-box a:hover {
  text-decoration: underline;
}

/* Speakers */
.invited-speakers {
  background-color: #f9fafb;
  padding: 4rem 0;
}

.speaker-card {
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.3s;
  font-family: Georgia, serif;
}

.speaker-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.speaker-image {
  width: 100%;
  height: 16rem;
  background-color: #d1d5db;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9ca3af;
  font-size: 1.125rem;
  border-bottom: 4px solid #1e40af;
  overflow: hidden;
  position: relative;
}

.speaker-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.speaker-image .placeholder-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #9ca3af;
  font-size: 1.125rem;
}

.speaker-info {
  padding: 1.5rem;
  background-color: white;
}

.speaker-info h3 {
  font-size: 1.0rem;
  font-weight: bold;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.speaker-info .affiliation {
  font-size: 0.875rem;
    color: #1e40af;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.speaker-info .role {
  color: #6b7280;
  font-size: 0.875rem;
}

.announcement-box {
  text-align: center;
  padding: 2rem;
  background-color: #eff6ff;
  border-radius: 0.5rem;
  border: 2px dashed #bfdbfe;
  margin-top: 3rem;
}

.announcement-box p {
  color: #4b5563;
  font-size: 1.125rem;
}

/* Organizing Committee */
.organizing-committee {
  background-color: white;
  padding: 4rem 0;
}

.committee-section {
  margin-bottom: 3rem;
  
}

.committee-section h3 {
  font-size: 1.5rem;
  font-weight: bold;
  color: #1e40af;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid #bfdbfe;
}

.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  display: flex;
  /*flex-direction: row;*/
  justify-content: center;
  /*align-items: center;*/
}

.member-card {
  padding: 1rem;
  background-color: white;
  border-radius: 0.5rem;
  transition: box-shadow 0.3s;
  overflow: hidden;
  border: 2px solid #1e3a8a;
  width: 225px;
  height: 325px;
  justify-items: center;
}

.member-card:hover {
  /*box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);*/
  /*box-shadow: 0px 15px 5px 2px #fa7d00;*/
  box-shadow: 0px 15px 5px 2px #93c5fd;
}

.member-photo {
  width: 10rem;
  height: 13rem;
  background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
  border-radius: 1.375rem;
/*  display: flex;
  align-items: center;
  justify-content: center;*/
  margin-bottom: 1rem;
  border: 4px solid #fa7d00;
  overflow: hidden;
  /*position: relative;*/
}

.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 0.375rem;
}

.member-photo .placeholder-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.5rem;
  color: #9ca3af;
}

.member-name {
  /*font-weight: bold;*/
  margin-bottom: 0.25rem;
  color: #1f2937;
  font-size: 1.0rem;
}

.member-title {
    color: #6b7280;
    font-size: 0.9rem;
}

.member-affil {
    color: #1e3a8a;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Footer */
.footer {
  background: linear-gradient(to right, #111827, #1e3a8a);
  color: white;
  padding: 3rem 0 1.5rem 0;
}

.footer-section {
  margin-bottom: 3rem;
}

.footer-section h3 {
  font-size: 1.125rem;
  font-weight: bold;
  color: #93c5fd;
  margin-bottom: 0.75rem;
}

.footer-section p {
  color: #d1d5db;
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-contact {
  padding: 2rem 0;
  border-top: 1px solid #374151;
  border-bottom: 1px solid #374151;
  margin-bottom: 2rem;
}

.footer-contact p {
  color: #d1d5db;
}

.footer-contact strong {
  color: white;
}

.footer-contact a {
  color: #93c5fd;
  text-decoration: none;
}

.footer-contact a:hover {
  color: #bfdbfe;
}

.footer-links {
  margin-bottom: 2rem;
}

.footer-links h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #93c5fd;
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.875rem;
}

.footer-links a {
  color: #93c5fd;
  text-decoration: none;
}

.footer-links a:hover {
  color: #bfdbfe;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #374151;
  color: #9ca3af;
  font-size: 0.875rem;
}

.footer-bottom p {
  margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }

  .desktop-menu {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .mobile-menu.active {
    display: flex;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .grid-3,
  .grid-2,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .hero-details {
    flex-direction: column;
    gap: 1rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .fee-card .price {
    font-size: 1.75rem;
  }
}

.place-card {
  /*background-color: #eff6ff;*/
/*  padding: 1.5rem;
  border-radius: 0.7rem;
  border: 5px solid #fa7d00;*/
  /*font-family: Georgia, serif;*/
    padding: 1.25rem;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 1.75rem;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
    height: 100%;
    transition: transform 0.3s;
    border: 2px #1e3a8a solid;
}

.place-card:hover {
  box-shadow: 0px 10px 10px 10px #FAE00D;
  transform: translateY(-0.5rem);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.place-card-image {
    height: 300px;
    background-size: cover;
    background-position: center;
    border: 5px #fa7d00 solid;
    border-radius: 1.75rem;
}

.place-card-content {
    padding: 1.5rem;
}

.place-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e3a8a;
    margin-bottom: 0.5rem;
    font-family: Georgia, serif;
}

.place-card-text {
    color: #4b5563;
    margin-bottom: 1rem;
    font-size: 1.0rem;
    font-family: Georgia, serif;
}

.place-card-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: #000000;
    font-size: 1.15rem;
    font-family: Georgia, serif;
}