:root {
  --primary: #00d4ff;
  --secondary: #883ff9;
  --dark: #0a0a1a;
  --dark-alt: #1a1a2e;
  --light: #f8f9fa;
  --gray: #6c757d;
  --danger: #dc3545;
  --dark-surface: #1e1e1e;
  --dark-card: #2d2d2d;
}

/* Navbar Styles */
.navbar {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
  z-index: 1000;
  position: relative;
  top: 0;
}

.navbar-brand {
  color: #fff !important;
  letter-spacing: 0.5px;
}

.nav-link {
  color: #f0f0f0 !important;
  font-weight: 500;
  margin: 0 8px;
  transition: 0.3s;
}

.nav-link:hover,
.nav-link:focus {
  color: #ffd700 !important;
}

/* Mobile responsiveness tweak */
@media (max-width: 992px) {
  .navbar-nav {
    /* background: var(--nav-bg); */
    border-radius: 10px;
    padding: 1rem 0;
  }
  .btn-close {
    filter: invert(1);
    background-color: var(--text);
    opacity: 0.8;
    color: var(--text);
  }

  .nav-link {   
    color: var(--text);
    padding: 0.5rem 1rem;
  }
}

/* Hero Section */
.hero {
  padding: 8rem 0;
  position: relative;
  overflow: hidden;
  background: linear-gradient(rgba(10, 10, 26, 0.308), rgba(10, 10, 26, 0.308)),
    url("../../img/download2.png");
  background-size: cover;
  background-position: center;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  background: #f8f9fa;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: var(--light);
}

.event-details {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.detail-item {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  backdrop-filter: blur(5px);
}

.detail-icon {
  margin-right: 0.5rem;
  font-size: 1.2rem;
}

.btn-primary-custom {
  background: linear-gradient(45deg, var(--primary), var(--secondary));
  border: none;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary-custom:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* ------------- */

/* Countdown Section */
.countdown-section {
  padding: 3rem 0;
  background: linear-gradient(45deg, #ec167f, #883ff9);
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.countdown-item {
  text-align: center;
  padding: 2rem;
  border-radius: 15px;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.1);
  margin: 0 0.5rem;
}

.countdown-number {
  font-size: 3.5rem;
  font-weight: 700;
  color: white;
}

.countdown-label {
  font-size: 1.2rem;
  color: white;
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* Sections */
.section {
  padding: 4rem 0;
  position: relative;
}

h1,
h2,
h3 {
  font-weight: 700;
}

.btn-primary-custom {
  background: linear-gradient(45deg, #ec167f, #883ff9);
  color: #fff;
  border: none;
  border-radius: 30px;
  padding: 10px 30px;
  transition: 0.3s ease;
}

.btn-primary-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(236, 22, 127, 0.5);
}

/* //---------------- Marquee Logos -------------- */
.marq {
  display: flex;
}

.logo-slider {
  display: flex;
  align-items: center;
  background: #fff;
  padding: 0px;
  overflow: hidden;
}

marquee img {
  width: auto;
  height: 150px;
  max-width: 200px;
  max-height: auto;
  margin-right: 3rem;
}

.imgshow {
  display: none;
  display: hidden;
}

/* Features Section */
.card-feature {
  background: rgba(255, 255, 255, 0.05);
  border: none;
  border-radius: 15px;
  padding: 2rem;
  height: 100%;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.card-feature:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

.card-feature h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

.card-feature ul {
  list-style: none;
  padding-left: 0;
}

.card-feature li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}

.card-feature li:before {
  content: "•";
  color: var(--primary);
  position: absolute;
  left: 0;
}

/* Pricing Cards */
/* .pricing-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 25px;
  border-radius: 15px;
  text-align: center;
} */

/* Pricing Cards */
.pricing-card {
  background: rgba(255, 255, 255, 0.05);
  border: none;
  border-radius: 15px;
  overflow: hidden;
  height: 100%;
  transition: transform 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-5px);
}

.pricing-card .card-header {
  padding: 1.5rem;
  color: white;
  text-align: center;
}

.bg-primary-gradient {
  background: linear-gradient(45deg, #00d4ff, #883ff9);
}

.bg-secondary-gradient {
  background: linear-gradient(45deg, #883ff9, #ec167f);
}

html[data-theme="light"]{
  .committee-card{
    background: none;
    border: 1px solid rgba(13, 202, 240, 0.1);
  }
  .committee-card .card-body{
    background: linear-gradient(180deg, #00d4ff, #883ff9);
    color:#000;
  }
}
html[data-theme="dark"]{
  .committee-card{
    background: none;
    /* border: 1px solid rgba(255, 255, 255, 0.1); */
    border: 2px solid rgba(13, 202, 240);

  }
  .committee-card .card-body{
    background: linear-gradient(180deg, #0a0a1a, #12122b);
    color: #fff;
  }
}

.pricing-card .card-body {
  padding: 2rem;
}

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

.option-header {
  /* display: flex; */
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.option-header h4 {
  margin: 0;
  font-size: 1.25rem;
  justify-content: center;
  color: var(--text);
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 1rem 0;
  color: var(--primary);
}

.currency {
  font-size: 1.5rem;
  vertical-align: top;
  margin-right: 5px;
}

.period {
  font-size: 1rem;
  color: var(--gray);
  font-weight: 400;
}

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--gray);
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.divider::before {
  margin-right: 1rem;
}

.divider::after {
  margin-left: 1rem;
}

.coming-soon {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.75rem;
  border-radius: 8px;
  text-align: center;
  font-weight: 500;
}

/* Membership Benefits */
.benefit-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.benefit-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  flex-shrink: 0;
  color: white;
  font-size: 1.25rem;
}

.benefit-content h5 {
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.benefit-content p {
  margin-bottom: 0;
  color: var(--gray);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .price {
    font-size: 2rem;
  }

  .option-header {
    flex-direction: column;
    align-items: center;
  }

  .option-header .badge {
    margin-top: 0.5rem;
  }
}

/* Callout Box */
.callout-box {
  background-color: var(--darker-bg);
  border: 1px solid #333;
  border-radius: 8px;
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.subtitle {
  color: var(--text);
  opacity: 0.8;
  font-size: 1rem;
  margin-bottom: 1.5rem;
  display: block;
}

.intro {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.highlight-list {
  padding-left: 1.2rem;
  margin: 1.5rem 0;
}

.highlight-list li {
  margin-bottom: 0.8rem;
  position: relative;
  list-style-type: none;
  padding-left: 1.5rem;
}

li:before {
  content: "";
  color: var(--primary);
  position: absolute;
  left: 0;
  font-size: 1.2rem;
}

.note {
  background-color: rgba(255, 107, 107, 0.1);
  border-left: 3px solid var(--accent);
  padding: 1rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.button-group {
  display: flex;
  gap: 15px;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  color: white;
  padding: 12px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.primary-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 198, 255, 0.4);
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  background-color: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 12px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.2s;
}

.secondary-button:hover {
  background-color: rgba(0, 198, 255, 0.1);
}

/* Footer */
footer {
  background-color: var(--dark-alt);
  padding: 3rem 0 1rem;
  position: relative;
}


.footer-logo img {
  height: 80px;
  margin-bottom: 1.5rem;
}

.footer-links a {
  color: var(--gray);
  text-decoration: none;
  margin: 0 1rem;
  transition: all 0.3s ease;
}

.footer-links a:hover {
  color: var(--primary);
}

.social-link {
  color: var(--gray);
  font-size: 1.5rem;
  margin: 0 0.75rem;
  transition: all 0.3s ease;
}

.social-link:hover {
  color: var(--primary);
  transform: translateY(-3px);
}



/* ================== Scientific Highlights & Agenda Page Edits ================== */

.highlights-section {
  background: rgba(255, 255, 255, 0.05);
  padding: 3rem;
  border-radius: 15px;
  margin-bottom: 3rem;
  backdrop-filter: blur(10px);
}

.highlights-section h3 {
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.tabs {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
  flex-wrap: wrap;
  gap: 10px;
}

.tab {
  padding: 0.8rem 1.5rem;
  background-color: var(--dark-surface);
  border: none;
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
}

.tab:hover {
  background-color: var(--dark-card);
}

.tab.active {
  background-color: var(--primary);
  color: white;
}

.content-section {
  display: none;
  padding: 2rem 0;
}

.content-section.active {
  display: block;
}

.day-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--secondary);
}

.day-title {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

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

.hall-title {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--secondary);
}

.session {
  background-color: var(--dark-card);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.session:hover {
  transform: translateY(-5px);
}

.session-title {
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.session-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.speakers {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 1rem;
}

.speaker {
  background-color: var(--dark-surface);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
}

.collaborations {
  background-color: var(--dark-card);
  padding: 2rem;
  border-radius: 10px;
  margin-top: 3rem;
  text-align: center;
}

.collaborations h2 {
  color: var(--success);
  margin-bottom: 1.5rem;
}

.partner-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 1.5rem;
}

.partner {
  background-color: var(--dark-surface);
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
}

@media (max-width: 768px) {
  h1 {
    font-size: 1.8rem;
  }

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

  .session-title {
    font-size: 1.1rem;
  }

  .tabs {
    flex-direction: column;
    align-items: center;
  }

  .tab {
    width: 100%;
    max-width: 300px;
  }
}

/* ================== End of Scientific Highlights & Agenda Page Edits ================== */
.faculty-image {
  width: 100%;
  height: auto;
  max-width: 200px;
  max-height: 200px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--primary);
}

/* ================== Sponsor Page Edits ================== */
.sponsor-image {
  justify-content: center;
  align-items: center;
  padding: 0.5rem;
}

.sponsor-image img {
  border: #00d4ff 2px solid;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  max-width: 100%;
  max-height: auto;
  object-fit: contain;
}

/* ================== End of Sponsor Page Edits ================== */