/* Base styles */
:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --card-bg: #f4f4f4;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

header {
    padding: 1rem;
    text-align: center;
    background: var(--card-bg);
}

#theme-toggle {
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    padding: 1rem;
}

.video-card {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s;
}

video {
    width: 100%;
    border-radius: 10px;
}

/* Dark mode */
.dark-mode {
    --bg-color: #121212;
    --text-color: #ffffff;
    --card-bg: #1e1e1e;
}

footer {
    text-align: center;
    padding: 1rem;
    background: var(--card-bg);
    margin-top: 2rem;
}