:root {
    --primary-color: #0078ff;
    --secondary-color: #0d0b2d;
    --accent-color: #f8f9fa;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--accent-color);
}

.hero-section {
    background: linear-gradient(rgba(0, 120, 255, 0.8), rgba(0, 120, 255, 0.8)), url('../images/pattern_ai.jpg');
    background-size: cover;
    background-position: center;
    min-height: 50vh;
    display: flex;
    align-items: center;
    color: white;
    padding: 60px 0;
}

.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.gallery-img {
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    object-fit: cover;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    width: 100%;
    margin-bottom: 1.5rem;
}

.gallery-img:hover {
    transform: scale(1.03);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.footer {
    background-color: white;
    color: #0d0b2d;
    padding: 20px 0;
}

.footer .footer-logo img {
    max-width: 150px;
}

.footer .footer-bottom {
    border-top: 1px solid #ddd;
    padding-top: 10px;
    margin-top: 10px;
}

.footer .social-icons a {
    color: #0d0b2d;
    margin: 0 10px;
    font-size: 1.5rem;
}

/* Mobile Optimizations */

@media (max-width: 768px) {
    .navbar-brand img {
        height: 70px !important;
    }
    .hero-section h1 {
        font-size: 2rem;
    }
    .hero-section p {
        font-size: 1rem;
    }
    .gallery-img:hover {
        transform: none;
    }
    .footer-logo h1 {
        font-size: 1.5rem;
    }
    .footer .social-icons a {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .navbar-nav {
        text-align: center;
    }
    .nav-item {
        padding: 10px 0;
        border-bottom: 1px solid #f0f0f0;
    }
    .footer-bottom p {
        font-size: 0.9rem;
    }
}

.event-title {
    position: relative;
    padding-bottom: 1rem;
    margin: 2rem 0;
}

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

/* video  */

.video-section {
    max-width: 900px;
    margin: auto;
    padding: 40px 20px;
}

.video-container {
    margin-bottom: 40px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 20px;
    overflow: hidden;
    background: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.video-container:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #000;
    display: block;
}

.play-pause-btn {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: background 0.3s ease;
}

.play-pause-btn:hover {
    background: rgba(255, 255, 255, 1);
}

.video-title {
    font-size: 20px;
    font-weight: bold;
    margin: 15px;
}

.video-description {
    font-size: 16px;
    margin: 0 15px 15px;
    color: #555;
}

@media (max-width: 600px) {
    .play-pause-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    .video-title {
        font-size: 18px;
    }
    .video-description {
        font-size: 15px;
    }
}