/* --- 1. Variabelen & Thema's --- */
:root {
    /* Standaard (Light Mode) */
    --bg-color: #f4f4f9;
    --card-bg: #ffffff;
    --text-color: #333333;
    --primary-color: #007bff; /* Blauw accent */
    --secondary-color: #6c757d; /* Grijs accent */
    --border-radius: 8px;
    --spacing: 20px;
}

/* Automatische Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121212;
        --card-bg: #1e1e1e;
        --text-color: #e0e0e0;
        --primary-color: #375a7f;
    }
}

/* --- 2. Algemene Reset --- */
* {
    box_sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* --- 3. Layout --- */
/* De centrale container zoals gevraagd in regel 11 */
.container {
    max-width: 1000px;
    margin: 0 auto; /* Centreert het blok */
    padding: var(--spacing);
}

header, footer {
    margin-bottom: var(--spacing);
}

/* --- 4. Componenten --- */
/* Algemene knop stijl - regel 14 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    opacity: 0.9;
}

/* Formulieren */
input, textarea, select {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: var(--border-radius);
    background-color: var(--card-bg);
    color: var(--text-color);
}
/* --- 5. Video Grid & Cards --- */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.video-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
}

.video-card:hover {
    transform: translateY(-5px);
}

.video-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
}

.video-info {
    padding: 15px;
}

.video-info h4 {
    margin: 0 0 5px 0;
    font-size: 1.1em;
    color: var(--primary-color);
}