/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Navbar Styles */
.navbar {
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  flex-grow: 1;
  margin: 0 20px;
}

.nav-links {
  display: flex;
  list-style: none;
  justify-content: center;
}

.nav-links li {
  position: relative;
  margin: 0 15px;
}

.nav-links a {
  color: #333;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  padding: 10px 0;
  display: block;
  transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: #3b5aab;
}

.nav-links a.active {
  border-bottom: 2px solid #3b5aab;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: white;
  min-width: 180px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 1;
  border-radius: 4px;
  padding: 10px 0;
  list-style-type: none;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  padding: 8px 15px;
  font-size: 13px;
}

.dropdown-menu a:hover {
  background-color: #f5f5f5;
}

.fa-chevron-down {
  font-size: 10px;
  margin-left: 5px;
}

/* Social Icons */
.social-icons {
  display: flex;
  align-items: center;
}

.social-icons a {
  color: #3b5aab;
  margin-left: 15px;
  font-size: 18px;
  transition: color 0.3s ease, transform 0.2s ease;
}

.social-icons a:hover {
  color: #1e3a8a;
  transform: translateY(-2px);
}

/* Mobile Toggle Button */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.mobile-toggle .bar {
  height: 3px;
  width: 100%;
  background-color: #3b5aab;
  border-radius: 10px;
  transition: all 0.3s ease;
}

/* Event Page Header Styles */
.event-header {
  background-color: #004ce5;
  color: white;
  padding: 60px 0;
  text-align: center;
}

.event-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.event-header p {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto;
  opacity: 0.9;
}

/* Event Content Section */
.event-content-section {
  padding: 70px 0;
}

.event-info {
  display: flex;
  margin-bottom: 60px;
  gap: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column-reverse;
}

.event-text {
  flex: 1.5;
}

.event-text.full-width {
  flex: 1;
}

.event-image {
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  width: 100%;
}

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

.event-section-subtitle {
  color: #004ce5;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
  padding-left: 15px;
}

.event-section-subtitle::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 25px;
  background-color: #004ce5;
  transform: translateY(-50%);
}

.event-section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #222;
}

.event-details {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.detail {
  display: flex;
  align-items: center;
  gap: 15px;
  color: #004ce5;
  font-weight: 400;
  line-height: 29px;
  font-size: 0.9rem;
}

.detail .icon {
  width: 28px;
  height: 28px;
}

.event-text p {
  color: #555;
  margin-bottom: 20px;
  line-height: 1.8;
  margin-top: 47px;
}

.register-btn {
  display: inline-flex;
  align-items: center;
  background-color: #cccccc;
  color: #666666;
  text-decoration: none;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 500;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(204, 204, 204, 0.2);
  cursor: not-allowed;
}

.register-btn i {
  margin-left: 10px;
  transition: transform 0.3s ease;
}

.register-btn:hover {
  background-color: #cccccc;
  transform: none;
  box-shadow: 0 4px 15px rgba(204, 204, 204, 0.2);
}

.register-btn:hover i {
  transform: none;
}

/* Event Image Collage for Student Symposium */
.event-image-collage {
  display: flex;
  gap: 15px;
  width: 100%;
  height: 400px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
}

.main-image {
  flex: 2;
  height: 100%;
  overflow: hidden;
  border-radius: 12px 0 0 12px;
}

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

.side-images {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 15px;
  height: 100%;
}

.side-image {
  flex: 1;
  overflow: hidden;
  border-radius: 8px;
}

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

.side-image:first-child {
  border-radius: 8px 8px 8px 8px;
}

.side-image:last-child {
  border-radius: 8px 8px 8px 8px;
}

/* Responsive adjustments for collage */
@media (max-width: 768px) {
  .event-image-collage {
    flex-direction: column;
    height: auto;
    gap: 10px;
  }

  .main-image {
    height: 250px;
    border-radius: 12px;
  }

  .side-images {
    flex-direction: row;
    height: 150px;
    gap: 10px;
  }

  .side-image {
    flex: 1;
  }
}

@media (max-width: 576px) {
  .event-image-collage {
    height: auto;
  }

  .main-image {
    height: 200px;
  }

  .side-images {
    height: 120px;
  }
}

/* Footer Styles */
.footer {
  background-color: #f9fbff;
  padding-top: 70px;
  border-top: 1px solid #eaeef5;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 50px;
}

.footer-brand {
  flex: 1;
  min-width: 250px;
  max-width: 350px;
}

.footer-logo {
  width: 180px;
  margin-bottom: 20px;
}

.footer-tagline {
  color: #3b5aab;
  font-weight: 600;
  margin-bottom: 25px;
  line-height: 1.5;
}

.footer-social p {
  color: #555;
  margin-bottom: 10px;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-links a {
  color: #3b5aab;
  font-size: 18px;
  transition: color 0.3s ease, transform 0.2s ease;
}

.social-links a:hover {
  color: #004ce5;
  transform: translateY(-2px);
}

.footer-links {
  flex: 1;
  min-width: 200px;
}

.footer-links h3,
.footer-newsletter h3 {
  color: #222;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 25px;
  position: relative;
}

.footer-links h3::after,
.footer-newsletter h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -10px;
  width: 40px;
  height: 3px;
  background-color: #004ce5;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 15px;
}

.footer-links a {
  color: #555;
  text-decoration: none;
  transition: color 0.3s ease, padding-left 0.3s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: #004ce5;
  padding-left: 5px;
}

.footer-newsletter {
  flex: 1.5;
  min-width: 300px;
}

.footer-newsletter p {
  color: #555;
  margin-bottom: 20px;
  line-height: 1.6;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.newsletter-form input {
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 30px;
  font-family: "Inter", sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s ease;
}

.newsletter-form input:focus {
  border-color: #004ce5;
}

.subscribe-btn {
  background-color: #004ce5;
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: 50px;
  font-family: "Inter", sans-serif;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.subscribe-btn:hover {
  background-color: #003bb2;
  transform: translateY(-2px);
}

.footer-bottom {
  background-color: #f0f5ff;
  padding: 20px 0;
  text-align: center;
  color: #555;
  font-size: 0.9rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .nav-links li {
    margin: 0 10px;
  }

  .nav-links a {
    font-size: 13px;
  }

  .social-icons a {
    font-size: 16px;
    margin-left: 10px;
  }

  .about-info {
    gap: 30px;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .about-header h1 {
    font-size: 2.2rem;
  }
}

@media (max-width: 768px) {
  /* Navbar Mobile Styles */
  .navbar-content {
    flex-wrap: wrap;
  }

  .logo {
    order: 1;
  }

  .mobile-toggle {
    display: flex;
    order: 3;
  }

  .nav-menu {
    order: 4;
    flex-basis: 100%;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
  }

  .nav-menu.active {
    max-height: 1000px;
    margin-top: 15px;
    overflow-y: auto;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links li {
    margin: 0;
    width: 100%;
    border-bottom: 1px solid #eee;
  }

  .nav-links a {
    padding: 12px 0;
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0;
  }

  .show-dropdown .dropdown-menu {
    max-height: 500px;
    padding: 5px 0;
  }

  .dropdown-menu a {
    padding-left: 20px;
  }

  .social-icons {
    order: 2;
    margin-left: auto;
  }

  .mobile-toggle.active .bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }

  .mobile-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }

  .mobile-toggle.active .bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

  /* About Page Mobile Styles */
  .about-header {
    padding: 40px 0;
  }

  .about-header h1 {
    font-size: 2rem;
  }

  .about-header p {
    font-size: 1rem;
  }

  .about-content-section {
    padding: 50px 0;
  }

  .about-info {
    flex-direction: column;
    gap: 30px;
  }

  /* .about-image {
        max-width: 100%;
    } */

  .section-title {
    font-size: 1.6rem;
  }

  .annual-meeting-title {
    font-size: 1.5rem;
  }

  /* Footer Mobile Styles */
  .footer {
    padding-top: 50px;
  }

  .footer-content {
    flex-direction: column;
    gap: 40px;
  }

  .footer-brand,
  .footer-links,
  .footer-newsletter {
    max-width: 100%;
  }

  .footer-bottom {
    padding: 15px 0;
  }
}

@media (max-width: 576px) {
  .social-icons {
    display: none;
  }

  .navbar-content {
    justify-content: space-between;
  }

  .about-header h1 {
    font-size: 1.8rem;
  }

  .about-header p {
    font-size: 0.9rem;
  }

  .section-subtitle {
    font-size: 0.9rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .about-text p {
    font-size: 0.95rem;
  }

  .annual-meeting-title {
    font-size: 1.3rem;
  }
}