.category-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 50px 20px;
    text-align: center;
}

.category {
    background: #1e1e1e;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: #fff;
}

.category:hover {
    transform: translateY(-5px);
    background: #2a2a2a;
}

.category h2 {
    margin: 0;
    font-size: 1.3rem;
    color: #00aaff;
}

header {
    padding: 30px;
    text-align: center;
    background-color: #222;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

header h1 {
    color: #fff;
    font-size: 2em;
    margin: 0;
}

.layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: #1a1a1a;
    padding: 30px 20px;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    overflow-y: auto;
}

.sidebar a {
    display: block;
    color: #fff;
    text-decoration: none;
    margin-bottom: 20px;
    font-size: 1rem;
    transition: color 0.3s;
}

.sidebar a:hover {
    color: #00aaff;
}

.content {
    margin-left: 250px;
    padding: 40px 20px;
    flex-grow: 1;
}

.video-container {
    background: #1c1c1c;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s;
}

.video-container:hover {
    transform: scale(1.03);
}

video {
    width: 100%;
    height: auto;
    display: block;
    outline: none;
    background: #000;
}

.caption {
    margin: 0;
    padding: 8px 12px;
    font-size: 1rem;
    background-color: #222;
    text-align: center;
    color: #ccc;
    width: 100%;
}

.video-grid::after {
    content: '';
    display: block;
    grid-column: 1 / -1;
    grid-row: span 1;
    height: 0;
}

.video-container {
    min-height: 0;
}

.menu-toggle {
    display: block;
    position: fixed;
    top: 70px;
    left: 15px;
    z-index: 1000;
    background-color: transparent;
    color: #ccc;
    padding: 6px 12px;
    border: 1px solid #444;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.5rem;
    font-weight: normal;
    box-shadow: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.menu-toggle:hover {
    background-color: #2a2a2a;
    color: #fff;
}

.menu-toggle:active {
    background-color: #333;
    color: #fff;
}

.sidebar {
    padding-top: 120px;
}

@media screen and (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        bottom: 0;
        width: 250px;
        background-color: #1a1a1a;
        padding: 30px 20px 80px;
        padding-top: 120px;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
        transition: left 0.3s ease;
        z-index: 999;
        overflow-y: auto;
    }

    .sidebar.active {
        left: 0;
    }

    .menu-toggle {
        display: block;
        position: fixed;
        top: 20px;
        left: 20px;
        z-index: 2001;
        background: none;
        border: none;
        font-size: 2rem;
        color: white;
        cursor: pointer;
        padding: 0;
    }

    .content {
        margin-left: 0 !important;
        padding-top: 80px;
        padding-left: 20px;
        padding-right: 20px;
    }

    .sidebar details summary {
        font-size: 1.1rem;
        padding: 10px 0;
    }

    .sidebar a {
        margin: 5px 0 5px 25px;
        font-size: 1rem;
        color: #ccc;
        text-decoration: none;
    }

    .sidebar a:hover {
        color: #00aaff;
    }

    .video-grid {
        display: flex;
        flex-direction: column;
        width: 100%;
        padding: 0 10px 40px;
        gap: 20px;
    }

    .video-container {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding: 10px 0;
    }

    video {
        width: 100%;
        height: auto;
        display: block;
    }

    .caption {
        padding: 15px 10px;
        font-size: 1rem;
        background-color: #222;
        text-align: center;
        color: #ccc;
    }
}

@media screen and (min-width: 769px) {
    .menu-toggle {
        display: none !important;
    }
}

.sidebar summary {
    cursor: pointer;
    color: #fff;
    font-size: 1rem;
    padding: 10px 0;
}

.sidebar details {
    margin-bottom: 10px;
}

.sidebar a {
    display: block;
    margin: 5px 0 5px 25px;
    font-size: 0.95rem;
    color: #ccc;
    text-decoration: none;
}

.sidebar a:hover {
    color: #00aaff;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    align-items: start;
    justify-items: center;
}

.video-grid::after {
    content: '';
    display: block;
    grid-column: 1 / -1;
    grid-row: span 1;
    height: 0;
}

.video-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.sidebar-logo {
    text-align: center;
    margin-bottom: 30px;
    padding: 10px;
}