body {
  background: #f9f9f9;
  font-family: "Segoe UI", sans-serif;
  margin: 0;
}
fieldset {
  border: 1px solid #fff;
  padding: 10px;
  margin-top: 10px;
}

/* --------------------------------------------Navbar ----------------------------------- */
.custom-navbar {
  border-bottom: 1px solid #dee2e6;
  transition: all 0.3s ease-in-out;
}

.custom-navbar .navbar-brand {
  font-family: "Segoe UI", sans-serif;
}

.nav-link.custom-link {
  font-weight: 500;
  color: #0056b3 !important;
  transition: color 0.3s, border-bottom 0.3s;
  position: relative;
}

.nav-link.custom-link::after {
  content: "";
  display: block;
  height: 2px;
  background: #0056b3;
  width: 0;
  transition: width 0.3s;
  position: absolute;
  bottom: 0;
  left: 0;
}

.nav-link.custom-link:hover::after {
  width: 100%;
}

.nav-link.custom-link:hover {
  color: #003366 !important;
}

.hamburger-lines {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 22px;
  width: 28px;
}
.line {
  background-color: #007bff;
  height: 3px;
  border-radius: 2px;
  width: 100%;
}

/* ----------------------------------------------------- Header ------------------------------------ */

/* Hero Section Styles */
.hero-section {
  position: relative;
  background-image: url("../assets/dau_entrance.jpg"); /* Replace with your actual image path */
  background-size: cover;
  background-position: center;
  height: 100vh;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-overlay {
  background-color: rgba(0, 0, 0, 0.55);
  width: 100%;
  height: 100%;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero-content h2 {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.hero-content p {
  font-size: 1rem;
  font-weight: 400;
}

/* About ISMMACS Section Styles */
.about-ismmacs-section {
  background-color: #f9f9f9;
  padding: 3rem 1.5rem;
  text-align: center;
}

.about-ismmacs-section .container {
  max-width: 900px;
  margin: 0 auto;
}

.about-ismmacs-section h2 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.about-ismmacs-section p {
  font-size: 1.05rem;
  line-height: 1.6;
  color: #333;
}

.about-ismmacs-section a {
  color: #0066cc;
  text-decoration: none;
  font-weight: 500;
}

.about-ismmacs-section a:hover {
  text-decoration: underline;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.hero-btn {
  padding: 0.8rem 1.8rem;
  font-size: 1.1rem;
  font-weight: 600;
  background-color: #0056b3; /* Blue */
  color: #ffffff; /* White text */
  border: none;
  border-radius: 6px;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: background-color 0.4s ease, transform 0.3s ease;
}

.hero-btn:hover {
  background-color: #ffc107; /* Yellow on hover */
  color: #000; /* Black text on yellow */
  transform: translateY(-3px);
}

/* ------------------------------------------------ About Workshop --------------------------------------- */

.about-workshop-content {
  font-family: "Segoe UI", sans-serif;
  background-color: #fdfdfd;
  border-left: 4px solid #007bff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
}

.workshop-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2c3e50;
}

.workshop-description {
  font-size: 1.05rem;
  color: #444;
  line-height: 1.7;
}

.workshop-modules li {
  background-color: #f8f9fa;
  color: #212529;
  font-weight: 500;
}

.highlight-list {
  padding-left: 1rem;
  margin-bottom: 1.5rem;
}

.highlight-item {
  font-size: 1.05rem;
  color: #2d3436;
  line-height: 1.6;
  margin-bottom: 0.5rem;
  list-style: disc;
}

/* -------------------------------------------------------------------- Conference Theme ------------------------------------------------- */

.theme-box {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  padding: 30px;
  background-color: #f4f7fb;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.theme-column {
  flex: 1 1 100%;
  min-width: 300px;
}

@media (min-width: 768px) {
  .theme-column {
    flex: 1 1 48%;
  }
}

.theme-column h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #1a237e;
}

.theme-column p {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 15px;
  color: #333;
}

.theme-column ul {
  padding-left: 20px;
  color: #444;
}

.theme-column li {
  margin-bottom: 8px;
  line-height: 1.5;
}

/* ------------------------------------------------------------- Important Dates --------------------------------------------- */

.important-dates-content {
  font-family: "Segoe UI", sans-serif;
  background-color: #fdfdfd;
  border-left: 4px solid #e67e22;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
}

.dates-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #d35400;
}

.dates-list .list-group-item {
  background-color: #f8f9fa;
  color: #2c3e50;
  font-size: 1.05rem;
  font-weight: 500;
  border-left: 3px solid #ffa726;
  margin-bottom: 8px;
}

.event-name {
  font-weight: 600;
}

.event-date {
  font-style: italic;
  color: #555;
}

/* ------------------------------------------------------------------ Intended Audience ----------------------------------------------- */

#audience-title {
  text-align: center;
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
  color: #212529;
}

#audience-desc {
  text-align: center;
  color: #555;
  margin-bottom: 2rem;
  font-size: 1rem;
}

.audience-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.audience-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 1.5rem;
  width: 300px;
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.07);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.audience-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.audience-icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
  margin-bottom: 1rem;
}

.audience-card h3 {
  font-size: 1.2rem;
  color: #1b1b1b;
  margin-bottom: 0.5rem;
}

.audience-card p {
  font-size: 0.95rem;
  color: #444;
}

/* ------------------------------------------------------------------- Workshop Schedule --------------------------------------------------- */

.schedule-card {
  background: #f9f9ff;
  border-left: 5px solid #007bff;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.schedule-card:hover {
  transform: scale(1.02);
}

.schedule-day {
  font-weight: 600;
  color: #0056b3;
  border-bottom: 1px solid #ddd;
  padding-bottom: 5px;
}

.schedule-card .list-group-item {
  background-color: transparent;
  border: none;
  padding: 10px 0;
  color: #333;
}

/* ------------------------- committee card ---------------------------------------------- */
.member-img {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid #007bff;
}

.custom-card {
  background: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 12px;
  padding: 20px;
  margin: 10px;
  transition: transform 0.2s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

.custom-card h5 {
  font-size: 1.1rem;
  font-weight: 600;
}

.custom-card p {
  font-size: 0.95rem;
  color: #555;
}

.section-title {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 15px;
  border-left: 5px solid #007bff;
  padding-left: 10px;
}

/* ----------------------------------- Speaker ------------------------------------------------------------------ */
.speaker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem;
  padding: 3rem 2rem;
  background: #f8fafc;
}

.speaker-card {
  background: linear-gradient(to bottom right, #ffffff, #f1f5f9);
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  display: flex;
  flex-direction: column;
}

.speaker-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.06);
}

.speaker-image {
  width: 100%;
  height: 200px;
  object-fit: contain;
  border-bottom: 2px solid #cbd5e1;
}

.speaker-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex-grow: 1;
}

.speaker-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1e293b;
}

.speaker-affiliation {
  font-size: 0.95rem;
  color: #475569;
}

.speaker-interests {
  font-size: 0.85rem;
  color: #334155;
  list-style: circle;
  padding-left: 1.2rem;
  margin: 0;
}

.speaker-tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 9999px;
  width: fit-content;
  letter-spacing: 0.5px;
  margin-top: auto;
}

.tag-fixed {
  background-color: #10b981;
  color: white;
}

.tag-tentative {
  background-color: #f59e0b;
  color: white;
}

.hidden-interest {
  display: none;
}

.show-more {
  background: none;
  border: none;
  color: white;
  background-color: #3b82f6;
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0.3rem 0;
  transition: color 0.3s ease;
}

.show-more:hover {
  color: #1d4ed8;
}

@media (max-width: 500px) {
  .speaker-image {
    height: 400px;
  }

  .speaker-body {
    padding: 1rem;
  }
}

/* -------------------------------- Registration CSS ---------------------------------------------- */

.form-container {
  max-width: 800px;
  margin: auto;
  background: #fff;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

.form-title {
  text-align: center;
  margin-bottom: 2rem;
  color: #1e293b;
  font-size: 1.8rem;
  font-weight: bold;
}

.registration-form .form-group {
  margin-bottom: 1.2rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 1rem;
  transition: border 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: #2563eb;
}

.textarea {
  resize: vertical;
  height: 100px;
}

.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
}

.btn {
  padding: 0.7rem 1.5rem;
  font-size: 1rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.3s ease;
}

.pay-btn {
  background: #f59e0b;
  color: white;
}

.pay-btn:hover {
  background: #d97706;
}

.submit-btn {
  background: #10b981;
  color: white;
}

.submit-btn:hover {
  background: #059669;
}

.error-message {
  color: red;
  font-size: 0.85rem;
  margin-top: 4px;
  display: none;
}

.input-error {
  border-color: red !important;
}

.form-title {
  font-size: 22px;
  font-weight: 600;
  color: #1e3a8a;
}

.form-group label {
  font-weight: 500;
}

#feeAmount {
  font-size: 18px;
  margin-top: 10px;
}

.btn-success {
  background-color: #28a745;
  border: none;
}

.btn-success:hover {
  background-color: #218838;
}

input.error, select.error, textarea.error {
  border-color: #dc3545;
}

label.error {
  color: #dc3545;
  margin-top: 5px;
  font-size: 14px;
}

.form-title {
  font-size: 24px;
  margin-bottom: 20px;
  font-weight: 600;
  color: #1e3a8a;
}

.form-group {
  margin-bottom: 15px;
}

#feeAmount {
  margin-top: 10px;
}

.btn-success {
  background-color: #10b981;
  border-color: #10b981;
}

.btn-success:hover {
  background-color: #059669;
  border-color: #059669;
}


/*  ------------------------------------------------- Reg Data  CSS -------------------------- */
.section {
  margin-bottom: 40px;
}

.title {
  font-size: 24px;
  font-weight: 600;
  color: #1e3a8a;
  margin-bottom: 20px;
  border-left: 6px solid #3b82f6;
  padding-left: 12px;
}

.table-wrapper {
  overflow-x: auto;
}

table.custom-table {
  width: 100%;
  border-collapse: collapse;
  background-color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  border-radius: 8px;
  overflow: hidden;
}

table.custom-table thead {
  background-color: #3b82f6;
  color: white;
}

table.custom-table th,
table.custom-table td {
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid #eee;
}

table.custom-table tr:hover {
  background-color: #f1f5f9;
}

.note-list {
  background: #eef2ff;
  padding: 20px;
  border-radius: 8px;
}

.note-list li {
  margin-bottom: 10px;
  line-height: 1.6;
}

.sub-heading {
  font-size: 18px;
  margin-top: 10px;
  font-weight: 500;
  color: #1e40af;
}

.toggle-btn {
  background-color: #3b82f6;
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 14px;
  border-radius: 5px;
  cursor: pointer;
  margin: 10px 0;
}

.toggle-btn:hover {
  background-color: #2563eb;
}

.hidden {
  display: none;
}
/* ------------------------------------------------- About City -------------------------------------------------- */

.about-city-section {
  background-color: #f4f7fa;
  padding: 4rem 1.5rem;
}

.about-city-section h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
  font-weight: 700;
  color: #333;
}

.about-city-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
}

.about-city-text {
  flex: 1 1 55%;
  font-size: 1rem;
  color: #444;
  line-height: 1.6;
}

.about-city-text ul {
  padding-left: 1.25rem;
  margin-top: 0.5rem;
}

.about-city-text li {
  margin-bottom: 0.5rem;
}

.about-city-image {
  flex: 1 1 40%;
  text-align: center;
}

.about-city-image img {
  width: 100%;
  max-width: 450px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Tourism Button */
.tourism-button {
  display: inline-block;
  margin-top: 1.5rem;
  background-color: #007b5e;
  color: #fff;
  padding: 0.7rem 1.4rem;
  font-size: 1rem;
  border-radius: 6px;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.tourism-button:hover {
  background-color: #005f46;
}

/* Responsive */
@media (max-width: 768px) {
  .about-city-grid {
    flex-direction: column;
  }

  .about-city-text,
  .about-city-image {
    flex: 1 1 100%;
  }
}

/* ------------------------------------ Sponosrs ----------------------------------------------------- */

.sponsor-card {
  border: 2px solid #f0f0f0;
  border-radius: 10px;
  transition: transform 0.3s, box-shadow 0.3s;
  background: #ffffff;
}

.sponsor-card:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 20px rgba(0, 123, 255, 0.1);
  border-color: #007bff;
}

.sponsor-img {
  max-height: 100px;
  object-fit: contain;
  padding: 10px;
}

/* --------------------------------------------------------- Footer ------------------------------------------------ */
/* Contact Box Styling */
.contact-box {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding: 25px;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.map-section {
  flex: 1 1 100%;
  min-height: 300px;
}

.contact-details {
  flex: 1 1 100%;
  padding: 10px 0;
}

@media (min-width: 768px) {
  .map-section,
  .contact-details {
    flex: 1 1 48%;
  }
}

.contact-details h3 {
  color: #1a237e;
  margin-bottom: 15px;
}

.contact-details p {
  margin: 10px 0;
  line-height: 1.6;
  color: #333;
}

.contact-details a {
  color: #007bff;
  text-decoration: none;
}

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

/* Footer Styling */
.footer-custom {
  background-color: #f4f4f4;
  padding: 15px 0;
  text-align: center;
  border-top: 1px solid #ddd;
}

.footer-custom a {
  color: #0d47a1;
  text-decoration: none;
  font-weight: 600;
}

.footer-custom a:hover {
  text-decoration: underline;
}

/* ---------------------------------------------------------- Call for Abstract Page ------------------------------------------ */

.call-abstract-section {
  font-family: "Segoe UI", sans-serif;
  background-color: #fdfdfd;
  border-left: 5px solid #007bff;
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

.call-abstract-title {
  font-size: 2rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 1rem;
}

.call-abstract-description {
  font-size: 1.1rem;
  color: #444;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.call-abstract-topics,
.call-abstract-guidelines {
  margin-bottom: 1.5rem;
}

.call-abstract-topics li,
.call-abstract-guidelines li {
  font-size: 1rem;
  color: #333;
  margin-bottom: 0.6rem;
  line-height: 1.6;
}

.call-abstract-guidelines-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.8rem;
  color: #007bff;
}

.call-abstract-closing {
  font-size: 1.05rem;
  color: #555;
  margin-top: 1.5rem;
}

/* ---------------------------------------------- Abstract Form --------------------------------------------- */

.abstract-form-card {
  background-color: #fdfdfd;
  border-left: 5px solid #007bff;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

#abstractForm label {
  font-weight: 500;
}

#abstractForm .form-control,
#abstractForm .form-select {
  border-radius: 5px;
}

#abstractForm button {
  transition: all 0.3s ease;
}

#abstractForm button:hover {
  background-color: #ffc107;
  color: #000;
}

.modal-content {
  border-radius: 8px;
}

.modal-header {
  background-color: #007bff;
  color: #fff;
}

.modal-footer button {
  transition: all 0.3s ease;
}

.modal-footer button:hover {
  opacity: 0.9;
}

#customAlert {
  transition: opacity 0.5s ease;
}

/* ------------------------------------------------------------------------------------ Symposium ---------------------------------------------------- */

.symposium-section {
  font-family: "Segoe UI", sans-serif;
  border-left: 4px solid #007bff;
  background: #fdfdfd;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  border-radius: 12px;
}

.symposium-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2c3e50;
}

.symposium-intro {
  font-size: 1.05rem;
  color: #444;
  line-height: 1.7;
}

.symposium-subtitle {
  font-size: 1.2rem;
  font-weight: 600;
  color: #2c3e50;
}

.symposium-list {
  list-style: disc;
  padding-left: 1.5rem;
}

.symposium-list li {
  margin-bottom: 0.7rem;
  font-size: 1.05rem;
  color: #2d3436;
  line-height: 1.6;
}

.symposium-note {
  background: #fff3cd;
  border-left: 4px solid #ffc107;
  padding: 0.8rem;
  border-radius: 8px;
  color: #856404;
  font-size: 1.02rem;
}

/* ------------------------------------------------------------------------- Vibrant campus -------------------------------------------------- */
/* Vibrant campus gallery styles */

/* Mobile-first default styles */
.vibrant-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 10px;
  padding: 10px;
}

.vibrant-gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.vibrant-gallery-item:hover {
  transform: scale(1.02);
}

.vibrant-gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

/* Optional overlay on hover */
.vibrant-gallery-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.3s ease;
}

.vibrant-gallery-item:hover::after {
  opacity: 1;
}

/* Medium screens and up (tablets, small laptops) */
@media (min-width: 600px) {
  .vibrant-gallery {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
  }

  .vibrant-gallery-item img {
    height: 220px;
  }
}

/* Large screens */
@media (min-width: 1024px) {
  .vibrant-gallery {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
  }

  .vibrant-gallery-item img {
    height: 250px;
  }
}