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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(120deg, rgba(255, 182, 193, 0.3), rgba(240, 230, 140, 0.3), rgba(173, 216, 230, 0.3), rgba(221, 160, 221, 0.3));
    background-size: 200% 200%;
    animation: rainbowMove 10s ease infinite;
    padding-top: 80px;
}

header {
    background: linear-gradient(135deg, #f39c12, #e74c3c, #8e44ad, #3498db, #1abc9c);
    background-size: 300% 300%;
    animation: gradientMove 6s ease infinite;
    color: #fff;
    padding: 10px 20px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    overflow: hidden;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
}

header h1 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@media screen and (max-width: 768px) {
    .header-left {
        justify-content: center;
        flex-wrap: wrap;
    }

    .header-logo {
        height: 40px;
    }

    .desktop-nav {
        display: none;
    }
}

.menu-center nav ul {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 20px;
    padding: 0;
    margin: 0;
}

.desktop-nav {
    display: flex;
    list-style: none;
    justify-content: flex-end;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.desktop-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.desktop-nav li {
    margin: 0;
    padding: 0;
}

@media screen and (min-width: 769px) {
    .desktop-nav {
        display: flex;
        justify-content: center;
        align-items: center;
        list-style: none;
        gap: 20px;
        margin: 0;
        padding: 0;
    }
    
    .desktop-nav li {
        display: inline-block;
    }
    
    .desktop-nav li a {
        color: #fff;
        text-decoration: none;
        font-weight: bold;
        padding: 10px 15px;
        border-radius: 5px;
        transition: background 0.3s, color 0.3s;
    }
}

.openbtn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 25px;
    cursor: pointer;
}

.openbtn span {
    background: #fff;
    height: 3px;
    border-radius: 3px;
    transition: all 0.3s;
}

.openbtn.active span:nth-child(1) {
    transform: rotate(45deg) translateY(9px);
}

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

.openbtn.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-9px);
}

.side-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 75%;
    max-width: 300px;
    height: 100%;
    background: #35004D;
    color: #fff;
    padding: 20px;
    transition: left 0.3s;
    z-index: 2000;
}

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

.side-menu nav ul {
    list-style: none;
    margin: 20px 0 0;
    padding: 0;
}

.side-menu nav ul li {
    margin: 15px 0;
}

.side-menu nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1.2rem;
}

.side-menu nav ul li a:hover {
    color: #ccc;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    z-index: 1500;
    text-align: center;
    animation: fadeIn 0.3s ease-in-out;
}

.menu-center {
    position: relative;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    font-family: 'Arial', sans-serif;
}

.menu-center nav ul {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
    gap: 20px;
}

.menu-center nav ul li {
    list-style: none;
    margin: 0;
}

.menu-center nav ul li a {
    color: #fff;
    font-size: 1.5rem;
    text-decoration: none;
    font-weight: bold;
    padding: 10px 20px;
    border-radius: 10px;
    transition: background 0.3s, color 0.3s;
}

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

.overlay.active {
    display: block;
}

main {
    margin: 0 auto;
    padding: 20px;
    max-width: 1200px;
    text-align: center;
}

.video-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.video-card iframe {
    width: 100%;
    height: 200px;
    border-radius: 10px 10px 0 0;
    border: none;
    display: block;
}

.video-info {
    padding: 15px;
    background-color: #fff;
    border-radius: 0 0 10px 10px;
}

.video-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: #007bb3;
}

.video-info p {
    font-size: 1rem;
    color: #555;
}

@media screen and (max-width: 768px) {
    .video-container {
        grid-template-columns: 1fr;
        padding: 10px;
    }

    .video-card {
        margin-bottom: 20px;
    }
}

footer {
    margin-top: auto;
    background-color: #ececec;
    padding: 20px;
    width: 100%;
    text-align: center;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    text-align: left;
}

.footer-section {
    flex: 1;
    min-width: 200px;
}

.footer-section strong {
    font-size: 16px;
    margin-bottom: 10px;
    display: block;
}

.footer-list {
    list-style: none;
    padding: 0;
    margin: 10px 0;
}

.footer-list li {
    font-size: 14px;
    margin-bottom: 5px;
}

.footer-list li a {
    text-decoration: none;
    color: #555;
    transition: color 0.3s ease;
}

.footer-list li a:hover {
    color: #000;
}

hr {
    border: none;
    height: 1px;
    background-color: #555555;
    margin: 20px 0;
}

.footer-bottom {
    text-align: center;
    margin-top: 20px;
}

.footer-bottom p {
    font-size: 14px;
    color: #777;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 10px 0 0;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-links li a {
    text-decoration: none;
    color: #555;
    transition: color 0.3s ease;
}

.footer-links li a:hover {
    color: #000;
}

@media screen and (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .openbtn {
        display: flex;
    }

    .section {
        flex-direction: column;
    }

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

    .section .text-block,
    .section .image-block {
        max-width: 100%;
    }
}