body {
    font-family: 'Inter', sans-serif;
    background-color: #f9fafb;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

nav {
    padding: 1rem;
}

nav > div {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1e40af;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: #374151;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: #1e40af;
    font-weight: 600;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #374151;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

.mobile-menu a {
    color: #374151;
    text-decoration: none;
    padding: 0.5rem 0;
}

/* Hero Section */
.gradient-bg {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
    color: white;
    padding: 8rem 1rem 6rem;
    margin-top: 4rem;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.hero-info {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.btn-primary {
    background: #ea580c;
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    background: #dc2626;
}

.btn-secondary {
    background: transparent;
    color: white;
    padding: 1rem 2rem;
    border: 2px solid white;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary:hover {
    background: white;
    color: #1e40af;
}

/* Custom button style for white background with fill hover effect */
.btn-secondary-fill {
    background: transparent;
    color: #1e40af;
    padding: 1rem 2rem;
    border: 2px solid #1e40af;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary-fill:hover {
    background: #1e40af;
    color: white;
}

/* Section Styles */
.section {
    padding: 5rem 1rem;
}

.section-white {
    background: white;
}

.section-gray {
    background: #f9fafb;
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #1f2937;
    margin-bottom: 1.5rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #6b7280;
    margin-bottom: 4rem;
    text-align: center;
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

/* Card Styles */
.card {
    background: white;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.card-center {
    text-align: center;
}

/* Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #1e40af;
}

.stat-label {
    color: #6b7280;
}

/* Timeline */
.timeline-two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.timeline-column {
    display: flex;
    flex-direction: column;
}

.timeline-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .timeline-two-column {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.timeline-number {
    background: #1e40af;
    color: white;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.timeline-number.orange {
    background: #ea580c;
}

.timeline-content {
    text-align: center;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
}

.timeline-date {
    color: #6b7280;
    margin: 0.5rem 0;
}

.timeline-desc {
    font-size: 0.875rem;
    color: #6b7280;
}

/* Countdown */
.countdown-box {
    background: #1e40af;
    color: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    display: inline-block;
    margin-bottom: 4rem;
}

.countdown-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.countdown-timer {
    font-size: 1.5rem;
    font-weight: bold;
}

.countdown-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

/* Topics */
.topic-item {
    background: #dbeafe;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border-left: 4px solid #1e40af;
    margin-bottom: 0.75rem;
}

.topic-text {
    font-weight: 500;
    color: #1f2937;
}

/* Schedule */
.schedule-day {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.schedule-header {
    text-align: center;
    margin-bottom: 1rem;
}

.schedule-day-number {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1e40af;
}

.schedule-date {
    color: #6b7280;
}

.schedule-item {
    border-left: 4px solid #1e40af;
    padding-left: 0.75rem;
    margin-bottom: 0.75rem;
}

.schedule-time {
    font-weight: 600;
    color: #1f2937;
}

.schedule-event {
    color: #6b7280;
}

/* Registration */
.pricing-card {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 0.5rem;
    border: 2px solid transparent;
    transition: border-color 0.3s;
    text-align: center;
}

.pricing-card:hover {
    border-color: #1e40af;
}

.pricing-card.featured {
    background: #dbeafe;
    border-color: #1e40af;
    position: relative;
}

.pricing-badge {
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    background: #1e40af;
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.pricing-price {
    font-size: 2rem;
    font-weight: bold;
    color: #1e40af;
}

.pricing-period {
    color: #6b7280;
}

.pricing-early {
    font-size: 0.875rem;
    color: #6b7280;
    margin-top: 0.25rem;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.pricing-features li {
    color: #6b7280;
    margin-bottom: 0.5rem;
}

/* Form Styles */
.form-container {
    max-width: 32rem;
    margin: 0 auto;
    background: #f9fafb;
    padding: 2rem;
    border-radius: 0.5rem;
}

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    color: #374151;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-input, .form-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    box-sizing: border-box;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: #1e40af;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-checkbox {
    margin-right: 0.75rem;
}

/* Speaker Cards */
.speaker-card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.speaker-avatar {
    width: 6rem;
    height: 6rem;
    background: #d1d5db;
    border-radius: 50%;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #6b7280;
}

.speaker-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.speaker-affiliation {
    color: #1e40af;
    margin-bottom: 0.75rem;
}

.speaker-bio {
    color: #6b7280;
    font-size: 0.875rem;
}

/* Footer */
footer {
    background: #1f2937;
    color: white;
    padding: 4rem 1rem 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-grid > div {
    display: flex;
    flex-direction: column;
}

.footer-grid h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-grid > div > div {
    display: flex;
    flex-direction: column;
}

.footer-grid a {
    color: #d1d5db;
    margin-bottom: 0.75rem;
    text-decoration: none;
    display: block;
}

.footer-grid a:hover {
    color: white;
}

.footer-copyright {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* Contact Section Styles */
.contact-section {
    background: white;
    padding: 5rem 1rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-grid > div {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 2rem;
}

.contact-info {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 0.5rem;
    border-left: 4px solid #1e40af;
    display: flex;
    flex-direction: column;
}

.contact-info h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #6b7280;
    margin-bottom: 1rem;
}

.contact-info p:last-child {
    margin-bottom: 0;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Additional utility classes for refactoring inline styles */
.section-margin {
    margin: 2rem 0;
}

.section-heading {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1.5rem;
}

.centered-section {
    text-align: center;
    margin-bottom: 4rem;
}

.content-grid {
    display: grid;
    gap: 0.75rem;
}

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

.max-width-container {
    max-width: 64rem;
    margin: 0 auto;
}

/* Track item styles */
.track-item {
    padding: 0.75rem;
    background: #f0f9ff;
    border-left: 4px solid #0284c7;
    border-radius: 0.375rem;
}

.track-item strong {
    color: #0284c7;
}

/* Conference format box */
.conference-format-box {
    background: #dbeafe;
    padding: 1.5rem;
    border-radius: 0.5rem;
    border-left: 4px solid #1e40af;
    margin-top: 2rem;
}

.format-heading {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.format-icon {
    margin-right: 0.5rem;
}

.format-list {
    color: #6b7280;
    margin: 0;
    padding-left: 1.5rem;
}

/* Color-coded info boxes */
.info-box {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    border-left: 4px solid;
}

.info-box-blue {
    background: #f0f9ff;
    border-left-color: #0284c7;
}

.info-box-green {
    background: #f0fdf4;
    border-left-color: #16a34a;
}

.info-box-red {
    background: #fee2e2;
    border-left-color: #dc2626;
}

.info-box-yellow {
    background: #fef3c7;
    border-left-color: #d97706;
}

.info-box-pink {
    background: #fdf2f8;
    border-left-color: #ec4899;
}

.info-box-gray {
    background: #f3f4f6;
    border-left-color: #6b7280;
}

.info-box-heading {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.info-box-list {
    color: #6b7280;
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-box-list li {
    margin-bottom: 0.5rem;
}

.info-box-list.small {
    font-size: 0.875rem;
}

.info-box-list.small li {
    margin-bottom: 0.25rem;
}

/* About intro section */
.about-intro-section {
    margin-bottom: 2rem;
}

.about-intro-section p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.about-intro-section .info-box {
    margin-bottom: 1.5rem;
}

/* Organizer styles */
.organizer-section {
    background: #f0f9ff;
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    border-left: 4px solid #0284c7;
}

.organizer-section.green {
    background: #f0fdf4;
    border-left-color: #16a34a;
}

.organizer-section.yellow {
    background: #fef3c7;
    border-left-color: #d97706;
}

.organizer-section.pink {
    background: #fdf2f8;
    border-left-color: #ec4899;
}

.organizer-section.gray {
    background: #f3f4f6;
    border-left-color: #6b7280;
}

.organizer-section.purple {
    background: #f5f3ff;
    border-left-color: #7c3aed;
}

.organizer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.organizer-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: calc(50% - 0.5rem);
    min-width: 280px;
}

.organizer-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #dbeafe;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #0284c7;
    font-size: 0.85rem;
    flex-shrink: 0;
    box-sizing: border-box;
    overflow: hidden;
    text-align: center;
    line-height: 1;
}

.organizer-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.organizer-avatar.green {
    background: #dcfce7;
    color: #16a34a;
}

.organizer-avatar.yellow {
    background: #fef3c7;
    color: #d97706;
}

.organizer-avatar.pink {
    background: #fce7f3;
    color: #ec4899;
}

.organizer-avatar.gray {
    background: #e5e7eb;
    color: #6b7280;
}

.organizer-avatar.purple {
    background: #ede9fe;
    color: #7c3aed;
}

.organizer-avatar.orange {
    background: #fed7aa;
    color: #ea580c;
}

.organizer-avatar.teal {
    background: #ccfbf1;
    color: #0f766e;
}

.organizer-avatar.indigo {
    background: #e0e7ff;
    color: #4338ca;
}

.organizer-avatar.red {
    background: #fecaca;
    color: #dc2626;
}

/* New card-based organizer layout */
.organizer-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.organizer-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: 1px solid #e5e7eb;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.organizer-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.organizer-card-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: #dbeafe;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #0284c7;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-sizing: border-box;
    overflow: hidden;
    text-align: center;
    line-height: 1;
    margin: 0 auto 1.5rem auto;
    border: 4px solid #f3f4f6;
}

.organizer-card-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* Category-specific avatar colors - using category colors for borders */
.organizer-card-avatar.category-it {
    background: #dbeafe;
    color: #1e40af;
    border-color: #1e40af;
}

.organizer-card-avatar.category-economics {
    background: #ede9fe;
    color: #7c3aed;
    border-color: #7c3aed;
}

.organizer-card-avatar.category-law {
    background: #dcfce7;
    color: #166534;
    border-color: #166534;
}

.organizer-card-avatar.category-social {
    background: #fef3c7;
    color: #92400e;
    border-color: #92400e;
}

/* Keep individual color variations for visual diversity within categories */
.organizer-card-avatar.green {
    background: #dcfce7;
    color: #16a34a;
    border-color: #166534; /* Use law category color for border */
}

.organizer-card-avatar.yellow {
    background: #fef3c7;
    color: #d97706;
    border-color: #92400e; /* Use social category color for border */
}

.organizer-card-avatar.pink {
    background: #fce7f3;
    color: #ec4899;
    border-color: #166534; /* Use law category color for border */
}

.organizer-card-avatar.gray {
    background: #e5e7eb;
    color: #6b7280;
    border-color: #6b7280; /* Keep gray border for neutral look */
}

.organizer-card-avatar.purple {
    background: #ede9fe;
    color: #7c3aed;
    border-color: #7c3aed; /* Use economics category color for border */
}

.organizer-card-avatar.orange {
    background: #fed7aa;
    color: #ea580c;
    border-color: #1e40af; /* Use IT category color for border */
}

.organizer-card-avatar.teal {
    background: #ccfbf1;
    color: #0f766e;
    border-color: #1e40af; /* Use IT category color for border */
}

.organizer-card-avatar.indigo {
    background: #e0e7ff;
    color: #4338ca;
    border-color: #1e40af; /* Use IT category color for border */
}

.organizer-card-avatar.red {
    background: #fecaca;
    color: #dc2626;
    border-color: #166534; /* Use law category color for border */
}

.organizer-card-avatar.blue {
    background: #dbeafe;
    color: #0284c7;
    border-color: #1e40af; /* Use IT category color for border */
}

.organizer-card-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.organizer-card-title {
    font-size: 0.95rem;
    color: #374151;
    margin-bottom: 0.75rem;
    font-style: italic;
    line-height: 1.4;
}

.organizer-card-department {
    font-size: 0.9rem;
    color: #6b7280;
    line-height: 1.4;
}

.organizer-card-department-badge {
    display: inline-block;
    background: #f3f4f6;
    color: #374151;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 1.5rem; /* Move to top with margin-bottom instead of margin-top */
}

.organizer-card-department-badge.it {
    background: #dbeafe;
    color: #1e40af;
}

.organizer-card-department-badge.economics {
    background: #ede9fe;
    color: #7c3aed;
}

.organizer-card-department-badge.law {
    background: #dcfce7;
    color: #166534;
}

.organizer-card-department-badge.social {
    background: #fef3c7;
    color: #92400e;
}

.organizer-name {
    margin: 0;
    font-weight: 600;
    color: #1f2937;
    font-size: 0.95rem;
}

.organizer-affiliation {
    margin: 0;
    color: #6b7280;
    font-size: 0.85rem;
}

/* Button styles with specific colors */
.btn-colored {
    color: #1e40af;
    border-color: #1e40af;
}

/* Contact section styles */
.contact-grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-card {
    padding: 2rem;
    border-radius: 0.75rem;
    border-left: 4px solid;
    min-height: 180px;
    display: flex;
    flex-direction: column;
}

.contact-card.blue {
    background: #f0f9ff;
    border-left-color: #0284c7;
}

.contact-card.green {
    background: #f0fdf4;
    border-left-color: #16a34a;
}

.contact-card.yellow {
    background: #fef3c7;
    border-left-color: #d97706;
}

.contact-card.pink {
    background: #fdf2f8;
    border-left-color: #ec4899;
}

.contact-card-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
}

.contact-icon.blue {
    background: #0284c7;
}

.contact-icon.green {
    background: #16a34a;
}

.contact-icon.yellow {
    background: #d97706;
}

.contact-icon.pink {
    background: #ec4899;
}

.contact-icon span {
    color: white;
    font-size: 1.5rem;
}

.contact-heading {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
}

.contact-description {
    color: #6b7280;
    margin-bottom: 1rem;
}

.contact-info {
    margin: 0;
}

.contact-link {
    color: #0284c7;
    text-decoration: none;
}

.contact-link.green {
    color: #16a34a;
}

.contact-link.yellow {
    color: #d97706;
}

.contact-link.pink {
    color: #ec4899;
}

/* Schedule item colors */
.schedule-item.green {
    border-left-color: #16a34a;
}

.schedule-event-text {
    font-weight: 600;
    color: #1f2937;
    font-size: 1.1rem;
}

/* Assistance box */
.assistance-box {
    background: linear-gradient(135deg, #dbeafe 0%, #e0f2fe 100%);
    padding: 3rem 2rem;
    border-radius: 1rem;
    border: 1px solid #0284c7;
    max-width: 600px;
    margin: 0 auto;
}

.assistance-icon {
    margin-bottom: 1.5rem;
    font-size: 3rem;
}

.assistance-heading {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.assistance-text {
    color: #6b7280;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.assistance-button {
    font-size: 1.125rem;
    padding: 1rem 2rem;
    text-decoration: none;
    display: inline-block;
}

/* Text alignment utilities */
.text-center {
    text-align: center;
}

.margin-bottom-4 {
    margin-bottom: 4rem;
}

.margin-bottom-1 {
    margin-bottom: 1rem;
}

.margin-top-2 {
    margin-top: 2rem;
}

.margin-bottom-2 {
    margin-bottom: 2rem;
}

/* Keynote speaker placeholder */
.keynote-placeholder {
    text-align: center;
    padding: 3rem 2rem;
    background: #f9fafb;
    border-radius: 0.5rem;
    border: 2px dashed #d1d5db;
}

.keynote-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.keynote-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.keynote-subtitle {
    color: #6b7280;
    font-size: 1.125rem;
    margin: 0;
}

.keynote-description {
    color: #6b7280;
    margin-top: 1rem;
    margin-bottom: 0;
}

/* Large section headings */
.large-section-heading {
    font-size: 2rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 2rem;
    text-align: center;
}

/* Registration cards */
.registration-card {
    padding: 2rem;
    border-radius: 0.5rem;
    border: 1px solid;
}

.registration-card.blue {
    background: #f0f9ff;
    border-color: #0284c7;
}

.registration-card.green {
    background: #f0fdf4;
    border-color: #16a34a;
}

.registration-list {
    color: #6b7280;
    list-style: none;
    padding: 0;
    margin: 0;
}

.registration-list li {
    margin-bottom: 0.75rem;
}

.bullet-blue {
    color: #0284c7;
    margin-right: 0.5rem;
}

.bullet-green {
    color: #16a34a;
    margin-right: 0.5rem;
}

/* Registration CTA */
.registration-cta {
    text-align: center;
    max-width: 48rem;
    margin: 2rem auto 0;
}

.cta-heading {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.cta-text {
    color: #6b7280;
    margin-bottom: 1.5rem;
}

.cta-button-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.cta-button {
    font-size: 1.125rem;
    padding: 1rem 2rem;
}

/* Committee section headings */
.committee-section-heading {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.organizer-department-heading {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.organizer-single {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Additional text styling utilities */
.organizer-title {
    margin: 0;
    color: #374151;
    font-size: 0.8rem;
    font-style: italic;
}

.organizer-department {
    margin: 0;
    color: #6b7280;
    font-size: 0.85rem;
}

/* Contact card styles */
.contact-card.yellow {
    background: #fef3c7;
    border-left-color: #d97706;
}

.contact-card.pink {
    background: #fdf2f8;
    border-left-color: #ec4899;
}

.contact-card-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.contact-card-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
}

.contact-card-icon.yellow {
    background: #d97706;
}

.contact-card-icon.pink {
    background: #ec4899;
}

.contact-card-icon.blue {
    background: #0284c7;
}

.contact-card-icon.green {
    background: #16a34a;
}

.contact-card-icon-text {
    color: white;
    font-size: 1.5rem;
}

.contact-card-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
}

.contact-text {
    margin-bottom: 0.5rem;
}

.contact-text.large {
    margin-bottom: 1rem;
    color: #6b7280;
}

.contact-text.small {
    margin: 0;
    font-size: 0.9rem;
    color: #6b7280;
}

.contact-text-highlight {
    color: #d97706;
}

.contact-text-highlight.pink {
    color: #ec4899;
}

.contact-text-highlight.blue {
    color: #0284c7;
}

.contact-text-highlight.green {
    color: #16a34a;
}

.contact-link {
    text-decoration: none;
}

.contact-link.blue {
    color: #0284c7;
}

.contact-secondary-text {
    color: #6b7280;
}

/* Contact section container */
.contact-max-width {
    max-width: 1000px;
    margin: 0 auto;
}

/* Contact assistance section */
.contact-assistance {
    text-align: center;
    margin-top: 3rem;
}

.contact-assistance-container {
    background: linear-gradient(135deg, #dbeafe 0%, #e0f2fe 100%);
    padding: 3rem 2rem;
    border-radius: 1rem;
    border: 1px solid #0284c7;
    max-width: 600px;
    margin: 0 auto;
}

.contact-assistance-icon {
    margin-bottom: 1.5rem;
}

.contact-assistance-large-icon {
    font-size: 3rem;
}

.contact-assistance-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.contact-assistance-text {
    color: #6b7280;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.contact-assistance-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.contact-assistance-email {
    font-size: 1.125rem;
    padding: 1rem 2rem;
    text-decoration: none;
    display: inline-block;
}

/* Footer styling */
.footer-text {
    color: #d1d5db;
    line-height: 1.6;
}

.footer-socials {
    margin-bottom: 1.5rem;
}

.footer-social-link {
    color: #d1d5db;
    text-decoration: none;
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
}

.footer-social-icon {
    margin-right: 0.5rem;
}

.footer-organized-text {
    margin-top: 0.5rem;
}

/* Display utilities */
.hidden {
    display: none;
}

.grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* Social Sciences section - individual organizer */
.organizer-single.social {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Sponsors section */
.sponsors-title {
    font-size: 2rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 2rem;
    text-align: center;
}

/* Sponsors section */
.sponsors-title {
    font-size: 2rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 2rem;
    text-align: center;
}

.sponsor-host-section {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    border-left: 4px solid #1e40af;
}

.sponsor-section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
    text-align: center;
}

.sponsor-content-center {
    text-align: center;
}

.sponsor-logo-large {
    max-height: 80px;
    margin-bottom: 1rem;
}

.sponsor-logo-medium {
    max-height: 60px;
    margin-bottom: 1rem;
}

.sponsor-university-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.sponsor-description {
    color: #6b7280;
}

.sponsor-project-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: #16a34a;
    margin-bottom: 1rem;
}

.sponsor-creative-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: #ea580c;
}

.sponsor-youth-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: #7c3aed;
}

.sponsor-card-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 160px;
    text-align: center;
}

.sponsor-note-section {
    background: #fefce8;
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid #eab308;
    margin-top: 2rem;
}

.sponsor-note-title {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
    text-align: center;
}

.sponsor-note-text {
    color: #6b7280;
    font-size: 0.875rem;
    margin: 0;
    text-align: center;
}

/* Alert/Warning styling for papers section */
.alert-heading {
    font-weight: 600;
    color: #dc2626;
    margin-bottom: 0.5rem;
}

.alert-list {
    color: #991b1b;
}

/* Additional responsive utilities */
@media (max-width: 768px) {
    .organizer-item {
        width: 100%;
        min-width: auto;
    }
}

/* Responsive Design */
@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }

    .nav-links {
        display: flex;
    }

    .hero-title {
        font-size: 4rem;
    }

    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }

    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .timeline-item {
        flex-direction: row;
        text-align: left;
    }

    .timeline-content {
        text-align: left;
    }

    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* New styles for additional content */
.conference-description {
    margin: 2rem 0;
    font-size: 1.1rem;
    line-height: 1.7;
}

.conference-language-notice {
    background-color: #dbeafe;
    border-left: 4px solid #1e40af;
    padding: 1rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.conference-language-notice p {
    margin: 0;
    color: #1e40af;
    font-weight: 600;
}

.publication-details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

.ethics-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: #f8fafc;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.ethics-heading {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e40af;
    margin-bottom: 1rem;
}

.ethics-section a {
    color: #1e40af;
    text-decoration: underline;
}

.ethics-section a:hover {
    color: #1d4ed8;
}

.process-quality-section {
    margin-bottom: 3rem;
}

.submission-types-section {
    margin-bottom: 3rem;
}

.submission-type-description {
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.submission-type-length {
    color: #1f2937;
    font-weight: 500;
    margin-bottom: 0;
}

.process-phases {
    margin-top: 2rem;
}

.process-phase {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background-color: #fafafa;
}

.phase-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e40af;
    margin-bottom: 1rem;
}

.evaluation-criteria {
    margin: 1rem 0;
    padding: 1rem;
    background-color: #f0f9ff;
    border-radius: 8px;
    border-left: 4px solid #0ea5e9;
}

.evaluation-criteria h5 {
    font-weight: 600;
    color: #0c4a6e;
    margin-bottom: 0.5rem;
}

.evaluation-criteria ul {
    margin: 0;
    padding-left: 1rem;
}

.evaluation-criteria li {
    margin-bottom: 0.3rem;
}

.info-notice {
    background-color: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: 6px;
    padding: 1rem;
    margin: 1rem 0;
}

.info-notice p {
    margin: 0;
    color: #92400e;
    font-size: 0.95rem;
}

.registration-process-section {
    margin-bottom: 2rem;
}

.registration-requirements {
    background-color: #f0f9ff;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.registration-requirements h4 {
    color: #1e40af;
    font-weight: 600;
    margin-bottom: 1rem;
}

.registration-requirements ul {
    margin-bottom: 1rem;
}

.registration-requirements li {
    margin-bottom: 0.5rem;
}

@media (max-width: 767px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

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

    .process-phase {
        padding: 1rem;
    }

    .conference-description {
        font-size: 1rem;
    }
}