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

body {

    font-family: Arial, sans-serif;
    background: #0f172a;
    color: white;
    padding: 30px;
}

header {
    text-align: center;
    margin-bottom: 25px;
}

h1 {
    font-size: 2rem;
}

.video-grid {

    display: grid;

    grid-template-columns:
      repeat(
         auto-fit,
         minmax(350px, 1fr)
      );

    gap: 20px;
}

.video-card {

    background: #1e293b;

    border-radius: 12px;

    overflow: hidden;

    box-shadow:
      0 5px 15px rgba(0,0,0,0.25);

    transition: transform .2s;
}

.video-card:hover {
    transform: translateY(-4px);
}

.video-card iframe {

    width: 100%;
    aspect-ratio: 16/9;
    border: none;
}

.video-info {
    padding: 15px;
}

.video-title {

    font-weight: bold;
    line-height: 1.4;
    margin-bottom: 10px;
}

.video-date {

    color: #94a3b8;
    font-size: .9rem;
}

.loading {

    text-align: center;
    grid-column: 1/-1;
}

@media (max-width: 768px) {

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

    body {
        padding: 15px;
    }

}