/* ===============================
   Global Styles
================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

.section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
}

.section-subtitle {
  font-size: 16px;
  color: #555;
}

/* ===============================
   Navbar
================================= */
.navbar {
  background: #0a3d62;
  color: #fff;
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 22px;
  font-weight: bold;
  color: #fff;
}

.nav-menu {
  display: flex;
  gap: 20px;
}

.nav-link {
  color: #fff;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-link:hover {
  color: #ffd32a;
}

/* Dropdown */
.dropdown-menu {
  display: none;
  position: absolute;
  background: #fff;
  padding: 10px 0;
  border-radius: 5px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu li {
  padding: 8px 20px;
}

.dropdown-menu li a {
  color: #333;
}

.dropdown-menu li a:hover {
  color: #0a3d62;
}

/* ===============================
   Hero Section
================================= */
.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.hero-slider .slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slider .slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: #fff;
  top: 50%;
  transform: translateY(-50%);
}

.hero-title {
  font-size: 28px;
  margin-bottom: 10px;
}

.hero-main-title {
  font-size: 40px;
  font-weight: 900;
}

.hero-conference-name {
  font-size: 24px;
  margin: 15px 0;
}

.hero-buttons .btn {
  display: inline-block;
  background: #ffd32a;
  color: #333;
  padding: 12px 25px;
  border-radius: 5px;
  margin-top: 20px;
  font-weight: bold;
  transition: background 0.3s;
}

.hero-buttons .btn:hover {
  background: #f39c12;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  border: none;
  color: #fff;
  font-size: 24px;
  padding: 10px;
  cursor: pointer;
  z-index: 20;
}

.prev-btn { left: 15px; }
.next-btn { right: 15px; }

.slider-indicators {
  position: absolute;
  bottom: 20px;
  width: 100%;
  text-align: center;
}

.indicator {
  display: inline-block;
  width: 12px; height: 12px;
  margin: 0 5px;
  border-radius: 50%;
  background: #ccc;
  cursor: pointer;
}

.indicator.active {
  background: #ffd32a;
}


/* About Section */
.about-content {
    max-width: 1250px;
    margin: 0 auto;
}

.about-text {
    text-align: justify;
}

.about-main {
    font-size: 1.0rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    color: #2c3e50;
}

.about-description {
    font-size: 0.95rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    color: #555;
}

.objectives h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin: 2rem 0 1rem 0;
}

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

.objectives li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

.objectives li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
    font-size: 1.5rem;
}

/* Announcements Section */
.announcements-content {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.announcement-item {
    padding: 1rem 0;
    border-bottom: 1px solid #ecf0f1;
    font-size: 0.95rem;
    line-height: 1.6;
}

.announcement-item:last-child {
    border-bottom: none;
}

.announcement-item strong {
    color: #2c3e50;
}

/* Call for Papers */
.cfp-content {
    max-width: 1250px;
    margin: 0 auto;
}

.cfp-topics h3 {
    font-size: 1.6rem;
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.topic-card {
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
    border-left: 5px solid #3498db;
}

.topic-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.topic-card i {
    font-size: 2.8rem;
    color: #3498db;
    margin-bottom: 1.5rem;
}

.topic-card h4 {
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.0rem;
    line-height: 1.4;
}

/* Speakers, Committee, Registration, Dates sections remain similar with larger text */
.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.speaker-card {
    background: white;
    border-radius: 10px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.speaker-image {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ecf0f1;
}

.speaker-image i {
    font-size: 4rem;
    color: #3498db;
}

.speaker-info h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.0rem;
}

.speaker-info p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Committee */
.committee-tabs {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    background: #ecf0f1;
}

.tab-button {
    flex: 1;
    padding: 1.5rem;
    background: none;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.8rem;
}

.tab-button.active {
    background: #3498db;
    color: white;
}

.tab-content {
    display: none;
    padding: 3rem;
}

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

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

.committee-member {
    padding: 2rem;
    border-left: 4px solid #3498db;
    background: #f8f9fa;
    border-radius: 0 10px 10px 0;
}

.committee-member h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.committee-member p {
    color: #7f8c8d;
    font-weight: 500;
    font-size: 0.8rem;
}

/* Registration */
.pricing-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.pricing-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

.pricing-header {
    background: #3498db;
    color: white;
    padding: 2rem;
    text-align: center;
}

.pricing-header h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.pricing-header i {
    font-size: 3rem;
}

.pricing-body {
    padding: 2rem;
}

.price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1.1rem;
}

.early-bird {
    background: #e8f5e8;
    border-left: 4px solid #27ae60;
}

.regular {
    background: #fef9e7;
    border-left: 4px solid #f39c12;
}

.price-label {
    font-weight: 600;
    color: #2c3e50;
}

.price-amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
}

.awards-section {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.awards-section h3 {
    color: #2c3e50;
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.award-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
    font-size: 0.9rem;
}

.award-item i {
    font-size: 2.0rem;
    color: #f39c12;
}

/* Important Dates Table */
.dates-table {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.date-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #ecf0f1;
    transition: background-color 0.3s ease;
    font-size: 1.2rem;
}

.date-row:hover {
    background-color: #f8f9fa;
}

.date-row:last-child {
    border-bottom: none;
}

.date-row.highlight {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.date-row.highlight:hover {
    background: linear-gradient(135deg, #2980b9, #3498db);
}

.date-label {
    font-weight: 600;
    color: #2c3e50;
}

.date-row.highlight .date-label {
    color: white;
}

.date-value {
    font-weight: 700;
    color: #3498db;
}

.date-row.highlight .date-value {
    color: white;
}

/* Contact */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-office h3 {
    color: #2c3e50;
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.contact-item {
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    line-height: 1.6;
}

.contact-item strong {
    color: #2c3e50;
}

.conference-name {
    margin-top: 3rem;
    padding: 1.5rem;
    background: #3498db;
    color: white;
    border-radius: 8px;
    text-align: center;
}

.conference-name h4 {
    font-size: 1.5rem;
    font-weight: 700;
}

.contact-map h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.map-container {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}


/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #3498db;
    font-size: 1.3rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 1rem;
}

.footer-section ul li a:hover {
    color: #3498db;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #3498db;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #2980b9;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
    font-size: 1rem;
}

/* About Section Layout */
.about-content {
    display: grid;
    grid-template-columns: 1.8fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.about-text {
    flex: 1;
}

.about-sidebar {
    position: sticky;
    top: 2rem;
}



/* ============================= */
/* Sliding Announcements Section */
/* ============================= */

/* Outer container with blue gradient box */
.sliding-announcements {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    padding: 2rem;
    color: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    position: relative;
    max-width: 400px;   /* Optional: restrict width */
    margin: 0 auto;     /* Center align */
}

/* Section title */
.sliding-announcements h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 700;
}

/* ============================= */
/* Slider Container */
/* ============================= */
.announcements-slider {
    position: relative;
    width: 100%;
    height: 300px; /* Fixed height for consistent layout */
    overflow: hidden;
}

/* ============================= */
/* Individual Slides */
/* ============================= */
.announcement-slide {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.15); /* Transparent overlay */
    border-radius: 10px;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%; 
    height: 100%;
    opacity: 0;
    transform: translateY(100%); /* Start off-screen (below) */
    transition: transform 0.8s ease-in-out, opacity 0.8s ease-in-out;
    backdrop-filter: blur(10px);
    box-sizing: border-box;
}

/* Active slide (visible) */
.announcement-slide.active {
    transform: translateY(0);
    opacity: 1;
    z-index: 2;
}

/* Next slide (hidden below current) */
.announcement-slide.next {
    transform: translateY(100%);
    opacity: 0;
    z-index: 1;
}

/* Previous slide (hidden above current) */
.announcement-slide.prev {
    transform: translateY(-100%);
    opacity: 0;
    z-index: 1;
}

/* ============================= */
/* Slide Content */
/* ============================= */

/* Icon box */
.announcement-icon {
    background: rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    width: 55px;
    height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.announcement-icon i {
    font-size: 1.6rem;
    color: white;
}

/* Text content */
.announcement-cont




/* Paper Submission Guidelines Styling */
.submission-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.submission-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e0e0e0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.submission-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.submission-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
}

.submission-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.submission-content p {
    font-size: 1rem;
    color: #666;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-main-title {
        font-size: 2.4rem;
    }
    
    .hero-conference-name {
        font-size: 2.2rem;
    }
    
    .hero-organizer {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        padding: 1rem;
        width: 100%;
        justify-content: center;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

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

    .hero-subtitle {
        font-size: 1.4rem;
    }

    .hero-main-title {
        font-size: 2.0rem;
    }

    .hero-conference-name {
        font-size: 1.8rem;
    }

    .hero-organizer {
        font-size: 0.8rem;
    }

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

    .slider-btn {
        font-size: 1.2rem;
        padding: 10px 15px;
    }

    .prev-btn {
        left: 15px;
    }

    .next-btn {
        right: 15px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .topics-grid {
        grid-template-columns: 1fr;
    }

    .pricing-table {
        grid-template-columns: 1fr;
    }

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

    .date-row {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }

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

    .hero-main-title {
        font-size: 1.6rem;
    }

    .hero-organizer {
        font-size: 0.7rem;
    }

    .section {
        padding: 60px 0;
    }

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

    .about-main {
        font-size: 0.9rem;
    }

    .about-description {
        font-size: 0.8rem;
    }
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.objectives h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin: 2rem 0 1rem 0;
}

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

.objectives li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.5rem;
}

.objectives li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.stat i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
}

.stat-label {
    color: #7f8c8d;
    font-weight: 500;
}

/* Announcements Section */
.announcements-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.announcement-box {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-left: 5px solid #3498db;
    transition: transform 0.3s ease;
}

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

.announcement-box h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.announcement-box h3 i {
    color: #3498db;
    font-size: 1.2rem;
}

.announcement-box p {
    color: #7f8c8d;
    line-height: 1.6;
}

.announcement-box ul {
    list-style: none;
    padding: 0;
}

.announcement-box ul li {
    margin-bottom: 0.5rem;
    color: #7f8c8d;
}

.announcement-box ul li strong {
    color: #2c3e50;
}

/* Call for Papers */
.cfp-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.topic-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.topic-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.topic-card i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.topic-card h4 {
    color: #2c3e50;
    font-weight: 600;
}

/* Speakers */
.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.speaker-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.speaker-image {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ecf0f1;
}

.speaker-image i {
    font-size: 4rem;
    color: #3498db;
}

.speaker-info h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.speaker-info p {
    color: #7f8c8d;
}

/* Committee */
.committee-tabs {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    background: #ecf0f1;
}

.tab-button {
    flex: 1;
    padding: 1.5rem;
    background: none;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-button.active {
    background: #3498db;
    color: white;
}

.tab-content {
    display: none;
    padding: 3rem;
}

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

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

.committee-member {
    padding: 1.5rem;
    border-left: 4px solid #3498db;
    background: #f8f9fa;
    border-radius: 0 10px 10px 0;
}

.committee-member h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.committee-member p {
    color: #7f8c8d;
    font-weight: 500;
}

/* Registration */
.pricing-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.pricing-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

.pricing-header {
    background: #3498db;
    color: white;
    padding: 2rem;
    text-align: center;
}

.pricing-header h3 {
    margin-bottom: 1rem;
}

.pricing-header i {
    font-size: 3rem;
}

.pricing-body {
    padding: 2rem;
}

.price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 10px;
}

.early-bird {
    background: #e8f5e8;
    border-left: 4px solid #27ae60;
}

.regular {
    background: #fef9e7;
    border-left: 4px solid #f39c12;
}

.price-label {
    font-weight: 600;
    color: #2c3e50;
}

.price-amount {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
}

.awards-section {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.awards-section h3 {
    color: #2c3e50;
    margin-bottom: 2rem;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.award-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.award-item i {
    font-size: 2rem;
    color: #f39c12;
}

/* Important Dates Table */
.dates-table {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.date-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #ecf0f1;
    transition: background-color 0.3s ease;
}

.date-row:hover {
    background-color: #f8f9fa;
}

.date-row:last-child {
    border-bottom: none;
}

.date-row.highlight {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.date-row.highlight:hover {
    background: linear-gradient(135deg, #2980b9, #3498db);
}

.date-label {
    font-weight: 600;
    font-size: 1.1rem;
    color: #2c3e50;
}

.date-row.highlight .date-label {
    color: white;
}

.date-value {
    font-weight: 700;
    font-size: 1.2rem;
    color: #3498db;
}

.date-row.highlight .date-value {
    color: white;
}

/* Contact */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 2rem;
    color: #3498db;
    margin-top: 0.5rem;
}

.contact-item h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: #7f8c8d;
}

.contact-form {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #ecf0f1;
    border-radius: 10px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #3498db;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #3498db;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #3498db;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #2980b9;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-title {
        font-size: 2.0rem;
    }

    .hero-subtitle {
        font-size: 2.2rem;
    }

    .hero-description {
        font-size: 1.2rem;
    }

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

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cfp-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .topics-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: row !important;
    }

    .timeline-item .timeline-content {
        text-align: left !important;
        margin-left: 4rem !important;
        margin-right: 0 !important;
    }

    .timeline-icon {
        left: 20px !important;
        transform: translateX(-50%) !important;
    }

    .dates-table {
        margin: 0 15px;
    }

    .date-row {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .date-label {
        font-size: 1rem;
    }

    .date-value {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .pricing-table {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }

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

    .hero-subtitle {
        font-size: 1.8rem;
    }

    .hero-description {
        font-size: 1.0rem;
    }

    .section {
        padding: 60px 0;
    }

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