:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #10b981;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark-color);
    line-height: 1.6;
    overflow-x: hidden;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 20px 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 700;
    font-size: 28px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 500;
    margin: 0 15px;
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

.hero {
    padding: 180px 0 120px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><circle cx="30" cy="30" r="2" fill="%234f46e5" opacity="0.1"/></svg>');
    opacity: 0.5;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 25px;
    color: var(--dark-color);
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.hero .lead {
    font-size: 22px;
    margin-bottom: 35px;
    color: #4b5563;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.hero-image {
    border-radius: 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    animation: slideInRight 1s ease 0.4s;
    animation-fill-mode: both;
    transition: transform 0.3s ease;
}

.hero-image:hover {
    transform: translateY(-10px);
}

.badge-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 50px;
    letter-spacing: 0.5px;
}

.hero-buttons {
    margin-top: 30px;
}

.btn-outline-primary {
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 14px 34px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(79, 70, 229, 0.2);
}

.hero-stats {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-stats h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.hero-stats p {
    font-size: 14px;
    color: #6b7280;
    margin: 0;
}

.hero-shape {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    clip-path: polygon(0 100%, 100% 100%, 100% 0);
    opacity: 0.1;
}

.events-section {
    padding: 100px 0;
    background-color: #fff;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 60px;
    color: var(--dark-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-header {
    margin-bottom: 60px;
}

.section-subtitle {
    font-size: 18px;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

.event-card {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
    margin-bottom: 30px;
    overflow: hidden;
    position: relative;
    border: none;
    background: white;
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.event-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.event-card .card-img-top {
    transition: transform 0.4s ease;
    height: 240px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.event-card:hover .card-img-top {
    transform: scale(1.05);
}

.event-card .card-body {
    padding: 30px;
}

.event-card .card-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.card-text {
    color: #4b5563;
    margin-bottom: 20px;
}

.event-info {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    color: #6b7280;
}

.event-info i {
    margin-right: 10px;
    color: var(--primary-color);
    font-size: 18px;
}

.event-card.completed {
    opacity: 0.8;
}

.event-card.completed .completed-badge {
    background: #dc3545;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    text-align: center;
    margin-top: 10px;
    font-weight: 500;
}

.event-registrations-container {
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-tabs .nav-link {
    color: #495057;
    border: 1px solid transparent;
    border-top-left-radius: .25rem;
    border-top-right-radius: .25rem;
    padding: 10px 20px;
    font-weight: 500;
}

.nav-tabs .nav-link.active {
    color: #007bff;
    background-color: #fff;
    border-color: #dee2e6 #dee2e6 #fff;
}

.tab-content {
    padding: 20px;
    background: #fff;
    border: 1px solid #dee2e6;
    border-top: none;
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

.table td, .table th {
    vertical-align: middle;
    padding: 12px;
}

.features-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.feature-card:hover * {
    color: white;
    position: relative;
    z-index: 1;
}

.feature-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.feature-card p {
    color: #6b7280;
    margin: 0;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
    transition: width 0.3s ease;
    z-index: -1;
}

.btn-primary:hover::before {
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(79, 70, 229, 0.3);
}

.footer {
    background: var(--dark-color);
    color: #fff;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
}

.footer h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 25px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer p {
    color: #9ca3af;
    font-size: 16px;
    line-height: 1.8;
}

.social-links {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

.social-links a {
    color: #fff;
    font-size: 24px;
    transition: all 0.3s ease;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

@media (max-width: 768px) {
    .hero {
        padding: 140px 0 80px;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .hero-image {
        margin-top: 50px;
    }
    
    .social-links {
        justify-content: center;
        margin-top: 30px;
    }
    
    .hero-stats {
        margin-top: 30px;
    }
    
    .feature-card {
        margin-bottom: 30px;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .btn-outline-primary {
        margin-left: 0 !important;
    }
}