/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.5;
    color: #1a1a1a;
    overflow-x: hidden;
    background: #ffffff;
    letter-spacing: -0.01em;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: #ffffff;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid #e5e5e5;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-logo h2 {
    color: #1a1a1a;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    text-decoration: none;
    color: #1a1a1a;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    position: relative;
    padding: 4px 0;
    letter-spacing: -0.01em;
}

.nav-menu a:hover {
    color: #0052cc;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0052cc;
    transition: width 0.2s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: #1a1a1a;
    color: white;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 32px;
    width: 100%;
}

.hero-main {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 80px;
    align-items: center;
}

.hero-text {
    color: white;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-title {
    margin-bottom: 32px;
}

.title-main {
    display: block;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.title-highlight {
    display: block;
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #fbbf24;
    letter-spacing: -0.02em;
}

.title-sub {
    display: block;
    font-size: 1.125rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: -0.01em;
    line-height: 1.5;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin: 40px 0;
}

.stat-item {
    text-align: center;
    padding: 20px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.stat-item .stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: #fbbf24;
    display: block;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.stat-item .stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    transform: translateY(0);
    letter-spacing: -0.01em;
    border: 1px solid transparent;
}

.btn-primary {
    background: #fbbf24;
    color: #1a1a1a;
    border: 1px solid #fbbf24;
    font-weight: 700;
}

.btn-primary:hover {
    background: #f59e0b;
    border: 1px solid #f59e0b;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.4);
    transform: translateY(-1px);
}

.hero-visual {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.timeline-preview {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.year-marker {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    text-align: center;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 10;
    pointer-events: auto;
    user-select: none;
    border: 2px solid transparent;
}

.year-marker:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(8px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.year-marker.active {
    background: #fbbf24;
    color: #1a1a1a;
    transform: translateX(12px);
    box-shadow: 0 6px 20px rgba(251, 191, 36, 0.4);
}

.growth-chart {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 120px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.chart-bar {
    flex: 1;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    z-index: 10;
    pointer-events: auto;
    min-height: 20px;
}

.chart-bar:hover {
    background: rgba(251, 191, 36, 0.7);
}

.chart-bar.active {
    background: #fbbf24;
}

/* Chart Tooltips */
.chart-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    pointer-events: none;
    z-index: 1000;
    display: none;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tooltip-year {
    font-weight: 700;
    color: #fbbf24;
    margin-bottom: 8px;
    text-align: center;
}

.tooltip-stats {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tooltip-stats div {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a1a1a;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.125rem;
    color: #6b7280;
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Growth Metrics Section */
.growth-metrics {
    padding: 120px 0;
    background: #ffffff;
}

.growth-comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 80px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.comparison-item {
    text-align: center;
    padding: 32px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 2px solid #e5e7eb;
}

.year-label {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 24px;
}

.comparison-stats {
    display: flex;
    justify-content: space-around;
    gap: 16px;
}

.comparison-stats .stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.comparison-stats .number {
    font-size: 2rem;
    font-weight: 800;
    color: #0052cc;
    margin-bottom: 4px;
}

.comparison-stats .label {
    font-size: 0.875rem;
    color: #6b7280;
    font-weight: 500;
}

.comparison-stats .growth {
    font-size: 0.75rem;
    color: #10b981;
    font-weight: 700;
    margin-top: 4px;
}

.growth-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: #0052cc;
}

.growth-arrow i {
    font-size: 2rem;
}

.growth-arrow span {
    font-size: 0.875rem;
    font-weight: 600;
}

.milestone-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.milestone-card {
    padding: 32px;
    background: linear-gradient(135deg, #0052cc 0%, #003d99 100%);
    color: white;
    border-radius: 12px;
    text-align: center;
}

.milestone-year {
    font-size: 2rem;
    font-weight: 800;
    color: #fbbf24;
    margin-bottom: 16px;
}

.milestone-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.milestone-desc {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 96px;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 32px;
}

.stat-card {
    background: white;
    padding: 32px 24px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #e5e7eb;
    transition: all 0.2s ease;
    position: relative;
}

.stat-card::before {
    display: none;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-color: #d1d5db;
}

.stat-icon {
    font-size: 2.5rem;
    color: #0052cc;
    margin-bottom: 16px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.95rem;
    color: #6b7280;
    font-weight: 500;
}

.event-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 32px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

.detail-card {
    background: #f8f9fa;
    padding: 32px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
}

.detail-card h3 {
    font-size: 1.25rem;
    margin-bottom: 24px;
    color: #1a1a1a;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.detail-card ul {
    list-style: none;
}

.detail-card li {
    padding: 12px 0;
    border-bottom: 1px solid #e5e7eb;
    font-size: 0.95rem;
    color: #4b5563;
    line-height: 1.5;
}

.detail-card li:last-child {
    border-bottom: none;
}

/* Timeline Section */
.timeline-section {
    padding: 120px 0;
    background: #f8f9fa;
}

.timeline-navigation {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 64px;
    flex-wrap: wrap;
}

.timeline-nav-btn {
    padding: 12px 20px;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #6b7280;
    cursor: pointer;
    transition: all 0.2s ease;
}

.timeline-nav-btn:hover {
    border-color: #0052cc;
    color: #0052cc;
}

.timeline-nav-btn.active {
    background: #0052cc;
    color: white;
    border-color: #0052cc;
}

.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: #e5e7eb;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 50px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.timeline-item:hover .timeline-content {
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
    border-color: #3b82f6;
}

.timeline-item:hover .timeline-year {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    transform: translateX(-50%) scale(1.1);
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: #ffffff;
    color: #0052cc;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    z-index: 2;
    border: 2px solid #0052cc;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-content {
    display: flex;
    align-items: center;
    gap: 24px;
    background: white;
    padding: 24px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    width: calc(50% - 48px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
}

.timeline-content:hover {
    transform: translateY(-2px) scale(1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-color: #d1d5db;
}

/* 모달 오버레이 배경 */
.timeline-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.45);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.timeline-modal-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* 모달창 효과 - 투명 유리창 스타일 (최적화) */
.timeline-item.in-focus {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) scale(1.25) !important;
    z-index: 1000 !important;
    width: 80vw !important;
    max-width: 900px !important;
    filter: none !important;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12) !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
    opacity: 1 !important;
}

.timeline-item.in-focus .timeline-content {
    background: #fff !important;
    border: 2px solid #e5e7eb !important;
    border-radius: 16px !important;
    box-shadow: 0 4px 16px rgba(0,0,0,0.10) !important;
    padding: 32px !important;
    transform: none !important;
    width: 100% !important;
    opacity: 1 !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.timeline-item.in-focus .timeline-poster img {
    width: 140px !important;
    height: 180px !important;
    transform: scale(1) !important;
    border-radius: 8px !important;
    border: 2px solid #fbbf24 !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.10) !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.timeline-item.in-focus .timeline-info h3 {
    font-size: 2rem !important;
    color: #0052cc !important;
    font-weight: 800 !important;
    margin-bottom: 12px !important;
    background: none !important;
    -webkit-background-clip: initial !important;
    -webkit-text-fill-color: initial !important;
    background-clip: initial !important;
    text-shadow: none !important;
    transform: none !important;
}

.timeline-item.in-focus .timeline-year {
    position: absolute !important;
    top: -24px !important;
    right: 24px !important;
    left: auto !important;
    transform: none !important;
    width: 64px !important;
    height: 64px !important;
    background: #fbbf24 !important;
    color: #1a1a1a !important;
    font-size: 1.25rem !important;
    font-weight: 900 !important;
    border: 2px solid #fff !important;
    box-shadow: 0 4px 12px rgba(251,191,36,0.15) !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* 모달이 닫힐 때 더 빠른 전환 */
.timeline-item:not(.in-focus) {
    transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1) !important;
    opacity: 1 !important;
    filter: none !important;
}

.timeline-item.modal-switching {
    transform: translate(-50%, -50%) scale(1.1) !important;
    opacity: 0.7 !important;
    filter: none !important;
    transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.timeline-modal-overlay.active ~ .timeline-section .timeline-item:not(.in-focus) {
    opacity: 0.25;
    pointer-events: none;
    filter: none;
    transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-modal-overlay.active ~ .timeline-section .timeline-item.in-focus {
    opacity: 1;
    pointer-events: auto;
    filter: none;
}

/* 포커스된 아이템은 완전히 보이게 */
.timeline-modal-overlay.active ~ .timeline-section .timeline-item.in-focus {
    opacity: 1;
    pointer-events: auto;
    filter: none;
}

.timeline-item.in-focus .timeline-content {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px) saturate(180%) !important;
    border: 2px solid rgba(0, 82, 204, 0.3) !important;
    border-radius: 20px !important;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.6) !important;
    padding: 40px !important;
    transform: none !important;
    width: 100% !important;
}

.timeline-item.in-focus .timeline-poster {
    flex-shrink: 0 !important;
    margin-right: 32px !important;
}

.timeline-item.in-focus .timeline-poster img {
    width: 180px !important;
    height: 240px !important;
    transform: scale(1) rotate(0deg) !important;
    border-radius: 12px !important;
    border: 3px solid #fbbf24 !important;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(251, 191, 36, 0.3) !important;
    transition: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
}

.timeline-item.in-focus .timeline-info {
    flex: 1 !important;
}

.timeline-item.in-focus .timeline-info h3 {
    font-size: 2.5rem !important;
    color: #0052cc !important;
    font-weight: 800 !important;
    text-shadow: 0 4px 8px rgba(0, 82, 204, 0.2) !important;
    margin-bottom: 16px !important;
    transform: none !important;
    background: linear-gradient(135deg, #0052cc, #3b82f6) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}

.timeline-item.in-focus .timeline-info .date {
    font-size: 1.25rem !important;
    color: #6b7280 !important;
    margin-bottom: 8px !important;
    font-weight: 600 !important;
}

.timeline-item.in-focus .timeline-info .venue {
    font-size: 1.125rem !important;
    color: #374151 !important;
    margin-bottom: 20px !important;
    font-weight: 500 !important;
}

.timeline-item.in-focus .timeline-info .stats {
    display: flex !important;
    gap: 24px !important;
    flex-wrap: wrap !important;
}

.timeline-item.in-focus .timeline-info .stats span {
    background: linear-gradient(135deg, #fbbf24, #f59e0b) !important;
    color: #1a1a1a !important;
    padding: 12px 20px !important;
    border-radius: 25px !important;
    font-weight: 700 !important;
    font-size: 1rem !important;
    box-shadow: 0 8px 16px rgba(251, 191, 36, 0.3) !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    backdrop-filter: blur(10px) !important;
}

.timeline-item.in-focus .timeline-year {
    position: absolute !important;
    top: -30px !important;
    right: 30px !important;
    left: auto !important;
    transform: none !important;
    width: 80px !important;
    height: 80px !important;
    background: linear-gradient(135deg, #fbbf24, #f59e0b) !important;
    color: #1a1a1a !important;
    font-size: 1.5rem !important;
    font-weight: 900 !important;
    border: 3px solid rgba(255, 255, 255, 0.8) !important;
    box-shadow: 
        0 15px 30px rgba(251, 191, 36, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.6) !important;
}

/* 일반 상태로 돌아갈 때 부드러운 전환 (이미 위에서 정의됨) */

/* 클릭 피드백 애니메이션 */
.timeline-item:active {
    transform: scale(0.98);
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
}

.timeline-poster {
    flex-shrink: 0;
}

.timeline-poster img {
    width: 96px;
    height: 128px;
    object-fit: cover;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
}

.timeline-info h3 {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: #1a1a1a;
    font-weight: 700;
    letter-spacing: -0.01em;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
}

.timeline-info .date {
    font-size: 0.875rem;
    color: #0052cc;
    margin-bottom: 4px;
    font-weight: 600;
}

.timeline-info .venue {
    font-size: 0.875rem;
    color: #6b7280;
    margin-bottom: 12px;
}

.timeline-info .stats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-info .stats span {
    background: #f3f4f6;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    color: #4b5563;
    font-weight: 500;
    border: 1px solid #e5e7eb;
}

.timeline-info .slogan {
    font-style: italic;
    color: #0052cc;
    margin-top: 8px;
    font-size: 0.875rem;
}

/* Achievements Section */
.achievements {
    padding: 120px 0;
    background: white;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-bottom: 80px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.achievement-item {
    text-align: center;
    padding: 40px 24px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 2px solid #e5e7eb;
    transition: all 0.2s ease;
}

.achievement-item:hover {
    transform: translateY(-4px);
    border-color: #0052cc;
    box-shadow: 0 8px 24px rgba(0, 82, 204, 0.15);
}

.achievement-icon {
    font-size: 3rem;
    color: #0052cc;
    margin-bottom: 20px;
}

.achievement-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.achievement-desc {
    font-size: 0.95rem;
    color: #6b7280;
    line-height: 1.5;
}

.partner-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 48px;
    max-width: 1200px;
    margin: 0 auto;
}

.partner-category {
    padding: 32px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
}

.partner-category h3 {
    font-size: 1.25rem;
    text-align: center;
    margin-bottom: 24px;
    color: #1a1a1a;
    font-weight: 700;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.partner-item {
    background: white;
    padding: 12px 16px;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    color: #4b5563;
    font-size: 0.875rem;
    border: 1px solid #e5e7eb;
    transition: all 0.2s ease;
}

.partner-item:hover {
    background: #0052cc;
    color: white;
    border-color: #0052cc;
}

/* Future Section */
.future {
    padding: 120px 0;
    background: linear-gradient(135deg, #0052cc 0%, #003d99 100%);
    color: white;
}

.future-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.future-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.future-date, .future-venue {
    padding: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.date-label, .venue-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
    font-weight: 500;
}

.date-value, .venue-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fbbf24;
}

.future-highlights {
    padding: 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
}

.future-highlights h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #fbbf24;
}

.future-highlights ul {
    list-style: none;
    padding: 0;
}

.future-highlights li {
    padding: 8px 0;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    padding-left: 20px;
}

.future-highlights li::before {
    content: '•';
    color: #fbbf24;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.future-poster {
    display: flex;
    justify-content: center;
    align-items: center;
}

.future-poster img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.cta-section {
    text-align: center;
    padding: 48px 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    max-width: 800px;
    margin: 0 auto;
}

.cta-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 32px;
    color: #fbbf24;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 64px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 32px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 16px;
    color: #ffffff;
}

.footer-section h3 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
}

.footer-section p {
    color: #9ca3af;
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.6;
}

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

.footer-section li {
    padding: 6px 0;
    color: #9ca3af;
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: #374151;
    color: #d1d5db;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.social-links a:hover {
    background: #0052cc;
    color: #ffffff;
    transform: translateY(-1px);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #374151;
    color: #9ca3af;
    font-size: 0.875rem;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 32px;
    padding-right: 32px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 64px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        padding: 24px 0;
        border-top: 1px solid #e5e7eb;
    }

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

    .hero-main {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

    .hero-content {
        padding: 64px 20px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin: 32px 0;
    }

    .stat-item {
        padding: 16px 12px;
    }

    .stat-item .stat-number {
        font-size: 1.5rem;
    }

    .stat-item .stat-label {
        font-size: 0.75rem;
    }

    .growth-comparison {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .growth-arrow {
        transform: rotate(90deg);
    }

    .future-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .partner-categories {
        grid-template-columns: 1fr;
    }

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

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

    .title-sub {
        font-size: 1.25rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .timeline::before {
        left: 24px;
    }

    .timeline-item {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 64px;
        margin-bottom: 48px;
    }

    .timeline-item:nth-child(even) {
        flex-direction: column;
    }

    .timeline-year {
        left: 24px;
        width: 48px;
        height: 48px;
        font-size: 0.875rem;
    }

    .timeline-content {
        width: 100%;
        flex-direction: column;
        gap: 16px;
        text-align: center;
        margin-left: 0 !important;
        padding: 20px;
    }

    .timeline-poster img {
        width: 80px;
        height: 104px;
    }
    
    /* 모바일에서 모달 효과 조정 */
    .timeline-item.in-focus {
        width: 95vw !important;
        transform: translate(-50%, -50%) scale(1.1) !important;
    }
    
    .timeline-item.in-focus .timeline-content {
        padding: 24px !important;
        border-radius: 16px !important;
        flex-direction: column !important;
        text-align: center !important;
    }
    
    .timeline-item.in-focus .timeline-poster {
        margin-right: 0 !important;
        margin-bottom: 20px !important;
    }
    
    .timeline-item.in-focus .timeline-poster img {
        width: 120px !important;
        height: 160px !important;
    }
    
    .timeline-item.in-focus .timeline-info h3 {
        font-size: 1.8rem !important;
    }
    
    .timeline-item.in-focus .timeline-info .stats {
        justify-content: center !important;
        gap: 12px !important;
    }
    
    .timeline-item.in-focus .timeline-info .stats span {
        padding: 8px 16px !important;
        font-size: 0.875rem !important;
    }
    
    .timeline-item.in-focus .timeline-year {
        width: 60px !important;
        height: 60px !important;
        font-size: 1.125rem !important;
        top: -20px !important;
        right: 20px !important;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 0 20px;
    }

    .event-details {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }

    .sponsor-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 12px;
    }

    .sponsor-category {
        padding: 0 20px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 0 20px;
    }

    .footer-bottom {
        padding-left: 20px;
        padding-right: 20px;
    }
}

@media (max-width: 480px) {
    .title-main {
        font-size: 2rem;
    }

    .title-sub {
        font-size: 1.125rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 16px;
        font-size: 0.875rem;
    }

    .timeline-content {
        padding: 16px;
    }

    .stat-card {
        padding: 24px 16px;
    }

    .contact-card {
        padding: 24px 16px;
    }

    .nav-container {
        padding: 0 16px;
    }

    .hero-content {
        padding: 48px 16px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes chartPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.7);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 8px rgba(251, 191, 36, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0);
    }
}

@keyframes statGlow {
    0% {
        text-shadow: 0 0 5px rgba(251, 191, 36, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(251, 191, 36, 0.8), 0 0 30px rgba(251, 191, 36, 0.6);
    }
    100% {
        text-shadow: 0 0 5px rgba(251, 191, 36, 0.5);
    }
}

/* Gallery Section */
.gallery-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 60px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    background: #ffffff;
}

.gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay i {
    color: white;
    font-size: 24px;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    margin: auto;
    padding: 20px;
    width: 90%;
    max-width: 1200px;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.close {
    position: absolute;
    top: 30px;
    right: 40px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2001;
    transition: color 0.3s ease;
}

.close:hover {
    color: #ff6b6b;
}

.modal-navigation {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.3s ease;
    pointer-events: all;
    backdrop-filter: blur(10px);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Responsive Design for Gallery */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 16px;
    }
    
    .gallery-item img {
        height: 200px;
    }
    
    .modal-content {
        padding: 10px;
    }
    
    .close {
        top: 20px;
        right: 20px;
        font-size: 30px;
    }
    
    .nav-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
}

/* Poster Carousel Section */
.poster-carousel-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.poster-carousel-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: float 20s ease-in-out infinite;
}

.poster-carousel-section .section-header h2 {
    color: white;
}

.poster-carousel-section .section-header p {
    color: rgba(255, 255, 255, 0.9);
}

.poster-carousel-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.poster-carousel {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    height: 500px;
    perspective: 1200px;
}

.poster-slide {
    position: absolute;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    transform-style: preserve-3d;
}

.poster-slide.active {
    z-index: 10;
    transform: translateX(0) translateZ(0) rotateY(0deg) scale(1.1);
}

.poster-slide:not(.active) {
    z-index: 5;
    opacity: 0.7;
    filter: brightness(0.8);
}

.poster-slide:nth-child(2) {
    transform: translateX(200px) translateZ(-100px) rotateY(-25deg) scale(0.8);
}

.poster-slide:nth-child(3) {
    transform: translateX(350px) translateZ(-200px) rotateY(-35deg) scale(0.6);
}

.poster-slide:nth-child(8) {
    transform: translateX(-200px) translateZ(-100px) rotateY(25deg) scale(0.8);
}

.poster-slide:nth-child(7) {
    transform: translateX(-350px) translateZ(-200px) rotateY(35deg) scale(0.6);
}

.poster-card {
    width: 300px;
    height: 420px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
}

.poster-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.poster-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.poster-year {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 15px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
    backdrop-filter: blur(10px);
}

.poster-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(2px);
}

.poster-card:hover .poster-overlay {
    opacity: 1;
}

.poster-overlay i {
    color: white;
    font-size: 48px;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
    animation: pulse 2s infinite;
}

.poster-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
    z-index: 15;
}

.poster-prev,
.poster-next {
    width: 50px;
    height: 50px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    pointer-events: auto;
}

.poster-prev:hover,
.poster-next:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.poster-indicators {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 40px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.indicator.active {
    background: white;
    transform: scale(1.2);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

/* Poster Modal */
.poster-modal {
    background: rgba(0, 0, 0, 0.95);
}

.poster-modal-content {
    background: transparent;
    border: none;
    box-shadow: none;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.poster-modal-header {
    margin-bottom: 20px;
}

.poster-modal-header h3 {
    color: white;
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
}

.poster-modal-body {
    position: relative;
    max-width: 70vw;
    max-height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.poster-modal-body img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.poster-modal-navigation {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 40px;
    pointer-events: none;
}

.poster-modal-navigation .nav-btn {
    width: 60px;
    height: 60px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    pointer-events: auto;
    font-size: 20px;
}

.poster-modal-navigation .nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Responsive Design for Poster Carousel */
@media (max-width: 768px) {
    .poster-carousel {
        height: 400px;
    }
    
    .poster-card {
        width: 250px;
        height: 350px;
    }
    
    .poster-slide:nth-child(2),
    .poster-slide:nth-child(8) {
        transform: translateX(150px) translateZ(-50px) rotateY(-15deg) scale(0.7);
    }
    
    .poster-slide:nth-child(2) {
        transform: translateX(-150px) translateZ(-50px) rotateY(15deg) scale(0.7);
    }
    
    .poster-slide:nth-child(3),
    .poster-slide:nth-child(7) {
        display: none;
    }
    
    .poster-controls {
        padding: 0 10px;
    }
    
    .poster-prev,
    .poster-next {
        width: 40px;
        height: 40px;
    }
    
    .poster-modal-body {
        max-width: 95vw;
        max-height: 80vh;
    }
    
    .poster-modal-navigation {
        padding: 0 20px;
    }
    
    .poster-modal-navigation .nav-btn {
        width: 50px;
        height: 50px;
        font-size: 18px;
    }
}

/* Conference Section */
.conference-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.conference-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='m20 20 20 0-20-20z'/%3E%3C/g%3E%3C/svg%3E");
    animation: float 15s ease-in-out infinite;
}

.conference-section .section-header h2 {
    color: white;
}

.conference-section .section-header p {
    color: rgba(255, 255, 255, 0.9);
}

.conference-posters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.conf-poster-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    aspect-ratio: 0.7;
}

.conf-poster-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.conf-poster-item img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    transition: transform 0.3s ease;
}

.conf-poster-item:hover img {
    transform: scale(1.05);
}

.conf-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.8), rgba(44, 62, 80, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(2px);
}

.conf-poster-item:hover .conf-overlay {
    opacity: 1;
}

.conf-overlay i {
    color: white;
    font-size: 3rem;
    animation: pulse 2s infinite;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

/* Conference Modal - Scrollable */
.conference-modal {
    background: rgba(0, 0, 0, 0.95);
}

.conference-modal-content {
    position: relative;
    background: transparent;
    border: none;
    box-shadow: none;
    max-width: 95vw;
    max-height: 95vh;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
}

.conference-modal-body {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    overflow: auto;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.conference-modal-body::-webkit-scrollbar {
    width: 12px;
}

.conference-modal-body::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.conference-modal-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
}

.conference-modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.conference-modal-body img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.conference-modal .close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.conference-modal .close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.conference-modal .modal-navigation {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 40px;
    pointer-events: none;
    z-index: 1000;
}

.conference-modal .modal-navigation .nav-btn {
    width: 60px;
    height: 60px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    pointer-events: auto;
    font-size: 20px;
}

.conference-modal .modal-navigation .nav-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

/* Responsive Design for Conference Section */
@media (max-width: 768px) {
    .conference-section {
        padding: 80px 0;
    }
    
    .conference-posters {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 40px;
    }
    
    .conf-poster-item {
        aspect-ratio: 0.75;
    }
    
    .conference-modal-content {
        max-width: 98vw;
        max-height: 98vh;
    }
    
    .conference-modal-body {
        max-width: 95vw;
        max-height: 90vh;
        padding: 15px;
    }
    
    .conference-modal .close {
        top: 10px;
        right: 15px;
        font-size: 30px;
        width: 40px;
        height: 40px;
    }
    
    .conference-modal .modal-navigation {
        padding: 0 20px;
    }
    
    .conference-modal .modal-navigation .nav-btn {
        width: 50px;
        height: 50px;
        font-size: 18px;
    }
}

.conference-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 60px;
}

.conference-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: #3498db;
}

.conference-highlights ul {
    list-style: none;
    padding: 0;
}

.conference-highlights li {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.conference-highlights li:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(10px);
}

.conference-highlights li i {
    color: #3498db;
    font-size: 1.2rem;
    margin-right: 15px;
    width: 20px;
    text-align: center;
}

.conference-highlights li span {
    font-weight: 500;
    font-size: 1.1rem;
}

.conference-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 40px;
    padding: 30px;
    background: rgba(52, 152, 219, 0.2);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

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

.conf-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #3498db;
    margin-bottom: 8px;
}

.conf-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.conference-gallery {
    position: relative;
}

.conf-image-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 15px;
    height: 400px;
}

.conf-image-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.conf-image-item.main-image {
    grid-row: span 2;
}

.conf-image-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.conf-image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.conf-image-item:hover img {
    transform: scale(1.05);
}

.conf-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.8), rgba(44, 62, 80, 0.8));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(2px);
}

.conf-image-item:hover .conf-overlay {
    opacity: 1;
}

.conf-overlay i {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 10px;
    animation: pulse 2s infinite;
}

.conf-overlay span {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
}

.conference-cta {
    text-align: center;
    margin-top: 80px;
    padding: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(15px);
}

.conference-cta h3 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: white;
}

.conference-cta p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
}

.conference-cta .cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.conference-cta .btn {
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.conference-cta .btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
}

.conference-cta .btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, #1abc9c);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(52, 152, 219, 0.4);
}

.conference-cta .btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

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

/* Conference Modal */
.conference-modal .modal-content {
    max-width: 90vw;
    max-height: 90vh;
}

.conference-modal img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 10px;
}

/* Responsive Design for Conference Section */
@media (max-width: 1024px) {
    .conference-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .conf-image-grid {
        height: 350px;
    }
    
    .conference-cta .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .conference-section {
        padding: 80px 0;
    }
    
    .conference-info h3 {
        font-size: 1.5rem;
    }
    
    .conference-highlights li {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .conference-highlights li span {
        font-size: 1rem;
    }
    
    .conference-stats {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }
    
    .conf-number {
        font-size: 2rem;
    }
    
    .conf-image-grid {
        grid-template-columns: 1fr;
        grid-template-rows: 200px 150px 150px;
        height: auto;
        gap: 10px;
    }
    
    .conf-image-item.main-image {
        grid-row: span 1;
    }
    
    .conference-cta {
        margin-top: 60px;
        padding: 30px 20px;
    }
    
    .conference-cta h3 {
        font-size: 1.8rem;
    }
    
    .conference-cta p {
        font-size: 1rem;
    }
    
    .conference-cta .btn {
        padding: 12px 25px;
        font-size: 1rem;
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}