/* Base Styles */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #7f8c8d;
    --white: #fff;
    --black: #000;
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Playfair Display', serif;
    --transition: all 0.3s ease;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--white);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

.underline {
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
    margin: 0 auto 20px;
    border-radius: 2px;
}

.btn-primary {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--white);
    padding: 12px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--white);
    padding: 12px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(44, 62, 80, 0.9);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(44, 62, 80, 0.98);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
}

.logo img {
    height: 70px;
    width: auto;
    margin-right: 20px;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--secondary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    background: transparent;
    border: none;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 700px;
    background: url('https://images.unsplash.com/photo-1462331940025-496dfbfc7564?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=911&q=80') no-repeat center center/cover;
    position: relative;
    display: flex;
    align-items: center;
}

.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: 1;
    color: var(--white);
    max-width: 800px;
}

.hero-content h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 400;
}

.hero-content h1 {
    font-family: var(--font-secondary);
    font-size: 4rem;
    line-height: 1.2;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-content h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    z-index: 1;
}

.scroll-down i {
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
}

/* About Section */
.about-content {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.about-image {
    flex: 1;
}

.image-frame {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.image-frame::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid var(--secondary-color);
    z-index: 1;
    pointer-events: none;
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.stats {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
}

/* Topics Section */
.topics-section {
    background: #f9f9f9;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.topic-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.topic-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.topic-icon {
    width: 70px;
    height: 70px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
}

.topic-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

/* Leaders, Honorary Guests and Delegates Section */
.speakers-section {
    background: var(--primary-color);
    color: var(--white);
}

.speakers-section .section-header h2,
.speakers-section .section-header p {
    color: var(--white);
}

.speakers-section .underline {
    background: var(--accent-color);
}

.speaker-card {
    background: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.speaker-card .speaker-info h3 {
    color: var(--primary-color);
}

.speaker-card .speaker-info p {
    color: var(--text-light);
}

.speaker-card .speaker-social a {
    color: var(--text-color);
    transition: var(--transition);
}

.speaker-card .speaker-social a:hover {
    color: var(--secondary-color);
}

.speakers-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.speakers-tab-btn {
    padding: 12px 25px;
    background: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.speakers-tab-btn.active {
    background: var(--secondary-color);
    color: var(--white);
}

.speakers-tab-btn:hover:not(.active) {
    background: rgba(52, 152, 219, 0.1);
}

.speakers-category {
    display: none;
}

.speakers-category.active {
    display: block;
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    padding: 15px 0;
}

.speaker-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.speaker-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.speaker-image {
    height: 500px;
    overflow: hidden;
}

.speaker-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.speaker-card:hover .speaker-image img {
    transform: scale(1.05);
}

.speaker-info {
    padding: 20px;
    background: var(--white);
    color: var(--text-color);
}

.speaker-info h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
    font-size: 1.2rem;
}

.speaker-info p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.speaker-social {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.speaker-social a {
    color: var(--text-color);
    background: rgba(44, 62, 80, 0.1);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    text-decoration: none;
}

.speaker-social a:hover {
    background: var(--secondary-color);
    color: white;
}

/* Schedule Section */
.schedule-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    gap: 10px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 25px;
    background: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.tab-btn:hover:not(.active) {
    background: rgba(52, 152, 219, 0.1);
}

.tab-content {
    display: none;
}

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

.schedule-item {
    display: flex;
    background: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.schedule-item .time {
    flex: 0 0 150px;
    background: var(--secondary-color);
    color: var(--white);
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.schedule-item .event {
    flex: 1;
    padding: 20px;
}

.schedule-item .event h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.schedule-item .event p {
    color: var(--text-light);
}

/* Registration Section */
.registration-content {
    display: flex;
    gap: 50px;
}

.registration-info {
    flex: 1;
}

.registration-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.registration-info p {
    margin-bottom: 30px;
}

.fee-category {
    margin-bottom: 30px;
}

.fee-category h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.fee-category ul {
    list-style: none;
}

.fee-category ul li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.fee-category ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.registration-form {
    flex: 1;
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.registration-form h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: center;
}

.registration-form .btn-primary {
    width: 100%;
    margin-top: 10px;
}

/* Loading indicator styles */
#loading-indicator {
    margin-top: 15px;
    text-align: center;
}

.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid #3498db;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* File upload styling */
.file-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #f9f9f9;
    margin-bottom: 5px;
}

.file-help {
    font-size: 0.85rem;
    color: #666;
    margin-top: 5px;
}

.form-buttons {
    margin-top: 20px;
}

/* Registration Success Message */
.registration-success {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    margin-top: 20px;
    display: none; /* Hidden by default */
}

.success-message i {
    color: #28a745; /* Keeping green for success */
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.success-message h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.success-message p {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.success-message .btn-primary {
    margin-top: 1.5rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    transition: var(--transition);
}

.form-group select {
    font-size: 1rem;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 1em;
    padding-right: 2.5em;
}

.form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.radio-group {
    display: flex;
    gap: 20px;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    cursor: pointer;
}

.radio-group input[type="radio"] {
    width: auto;
}

/* Venue Section */
.venue-section {
    background-color: #f8f9fa;
    padding: 80px 0;
}

.venue-content {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}

.venue-info {
    flex: 1;
    background: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.venue-info h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-family: var(--font-secondary);
}

.venue-info p {
    margin-bottom: 20px;
    line-height: 1.7;
}

.venue-info h4 {
    font-size: 1.5rem;
    margin: 30px 0 15px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 8px;
    display: inline-block;
}

.venue-info ul {
    margin-bottom: 30px;
    padding-left: 20px;
}

.venue-info ul li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 25px;
}

.venue-info ul li:before {
    content: "•";
    color: var(--secondary-color);
    font-size: 1.5rem;
    position: absolute;
    left: 0;
    top: -3px;
}

.venue-amenities {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 30px;
}

.amenity {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(52, 152, 219, 0.1);
    padding: 12px 18px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.amenity:hover {
    background: rgba(52, 152, 219, 0.2);
    transform: translateY(-3px);
}

.amenity i {
    color: var(--secondary-color);
    font-size: 1.3rem;
}

.amenity span {
    font-weight: 500;
}

.venue-map-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.venue-gallery {
    margin-bottom: 0;
}

.venue-main-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    box-shadow: var(--box-shadow);
    transition: transform 0.5s ease;
}

.venue-main-image:hover {
    transform: scale(1.02);
}

.venue-thumbnails {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.venue-thumbnails img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.venue-thumbnails img:hover,
.venue-thumbnails img.active {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    border-color: var(--secondary-color);
}

.venue-map {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    height: 500px;
}

.venue-map iframe {
    width: 100%;
    height: 100%;
    border: non;
}
/* Awards Section */
.awards-section {
    background: #f9f9f9;
}

.awards-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.award-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.award-card:hover {
    transform: translateY(-10px);
}

.award-icon {
    width: 80px;
    height: 80px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
}

.award-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.award-card p {
    color: var(--text-light);
}

/* Abstract Submission Section */
.abstract-content {
    display: flex;
    gap: 50px;
}

.abstract-info {
    flex: 1;
    background: var(--light-color);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    margin-bottom: 40px;
}

.abstract-info h3 {
    margin-bottom: 25px;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.abstract-info p {
    color: var(--text-light);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.abstract-info .btn-primary {
    padding: 15px 40px;
    font-size: 1.1rem;
    margin-top: 15px;
    transition: var(--transition);
}

.abstract-info .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.submission-instructions {
    flex: 2;
}

.submission-steps {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.step {
    display: flex;
    gap: 20px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    background: var(--white);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    flex: 1;
}

.step-content h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.coordinator-info {
    display: flex;
    gap: 20px;
    margin: 15px 0;
}

.coordinator {
    flex: 1;
    background: rgba(52, 152, 219, 0.1);
    padding: 15px;
    border-radius: var(--border-radius);
}

.coordinator h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

/* Workshops Section */
.workshops-section {
    background: #f9f9f9;
}

.workshops-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.workshop-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.workshop-card h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-color);
}

.workshop-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.workshop-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

/* Workshops Section with Photos */
.workshop-speaker {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.speaker-image {
    width: 200px;
    height: 250px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--secondary-color);
    margin-bottom: 20px;
}

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

.speaker-info {
    flex: 1;
}

.workshop-item {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #eee;
}

.workshop-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.workshop-item h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.workshop-item p {
    color: var(--text-light);
    margin-bottom: 5px;
}

@media (max-width: 768px) {
    .workshop-speaker {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .speaker-image {
        margin-bottom: 15px;
    }
}

/* Sponsors Section */
.sponsors-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    padding: 20px 0;
}

.sponsor-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80px;
    padding: 0 30px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.sponsor-logo img {
    max-width: 100%;
    max-height: 100%;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.sponsor-logo:hover img {
    filter: grayscale(0);
    opacity: 1;
}

/* Contact Section */
.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 5px;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.contact-item a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--accent-color);
}

.contact-form {
    flex: 1;
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: center;
}

.contact-form .form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Newsletter Section */
.newsletter-section {
    background: var(--primary-color);
    color: var(--white);
    padding: 60px 0;
}

.newsletter-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.newsletter-content h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.newsletter-content p {
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.newsletter-form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 15px;
    border: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-family: var(--font-primary);
}

.newsletter-form button {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    border: none;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.footer-about p {
    margin-bottom: 15px;
    color: var(--light-color);
}

.footer-links h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

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

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-contact h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.footer-contact p {
    margin-bottom: 15px;
    color: var(--light-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact p i {
    color: var(--secondary-color);
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
    text-decoration: none;
}

.footer-social a:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--light-color);
    font-size: 0.9rem;
}

.footer-credits {
    margin-top: 10px;
}

.footer-credits i {
    color: var(--accent-color);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-color);
    transform: translateY(-5px);
}

/* Countdown Timer */
.countdown {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

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

.countdown-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
}

.countdown-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.countdown-ended {
    font-size: 1.2rem;
    color: var(--white);
    text-align: center;
}

/* Sponsors Section with Categories */
.sponsors-category {
    margin-bottom: 50px;
}

.sponsors-category h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 25px;
    text-align: center;
    position: relative;
    padding-bottom: 10px;
}

.sponsors-category h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--secondary-color);
}

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.sponsor-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 120px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.sponsor-logo img {
    max-width: 100%;
    max-height: 100%;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
    object-fit: contain;
}

.sponsor-logo:hover img {
    filter: grayscale(0);
    opacity: 1;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .about-content,
    .registration-content,
    .contact-content,
    .venue-content {
        flex-direction: column;
    }
    
    .about-image,
    .registration-form,
    .contact-form,
    .venue-map {
        width: 100%;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .section {
        padding: 60px 0;
    }
}

@media (max-width: 768px) {
    .sponsors-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 20px;
    }
    
    .sponsor-logo {
        height: 100px;
        padding: 15px;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--primary-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 30px;
        transition: var(--transition);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content h4 {
        font-size: 1.2rem;
    }
    
    .hero-content h3 {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .speakers-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .speakers-tabs {
        flex-wrap: wrap;
    }
    
    .speakers-tab-btn {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .schedule-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .schedule-item {
        flex-direction: column;
    }
    
    .schedule-item .time {
        flex: auto;
        padding: 10px;
    }
}

@media (max-width: 576px) {
    .sponsors-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 15px;
    }
    
    .sponsor-logo {
        height: 80px;
        padding: 10px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .venue-thumbnails img {
        width: 60px;
        height: 45px;
    }
    
    .venue-info {
        padding: 20px;
    }
    
    .amenity {
        padding: 10px 15px;
    }
    
    .countdown {
        flex-wrap: wrap;
    }
    
    .countdown-item {
        flex: 0 0 calc(50% - 10px);
    }
    
    .sponsor-logo {
        height: 60px;
        padding: 0 20px;
    }
}
/* Venue Section Button */
.venue-info .btn-primary {
    display: block;
    margin: 30px auto 0;
    text-align: center;
    width: fit-content;
    padding: 12px 30px;
}