:root {
    --primary-color: #6c5ce7;
    --accent-color: #ff7675;
    --bg-color: #f0f3f5;
    --text-dark: #2d3436;
    --white: #ffffff;
    --btn-gradient: linear-gradient(135deg, #6c5ce7, #8e82ff);
}

body { 
    font-family: 'Segoe UI', sans-serif; 
    background-color: var(--bg-color); 
    margin: 0; 
    color: var(--text-dark); 
}

header { 
    background: linear-gradient(135deg, var(--primary-color), #a29bfe); 
    color: white; 
    padding: 2rem 1rem; 
    text-align: center; 
}

.shop-container { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
    gap: 2rem; 
    max-width: 1000px; 
    margin: 2rem auto; 
    padding: 1rem; 
}

/* Productkaarten */
.card { 
    background: var(--white); 
    border-radius: 12px; 
    overflow: hidden; 
    box-shadow: 0 4px 10px rgba(0,0,0,0.1); 
    cursor: pointer; 
    transition: 0.3s; 
}

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

.product-image { 
    height: 180px; 
    background: #ddd; 
}

.product-image img { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
}

.card-info { 
    padding: 1rem; 
}

.card-footer { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-top: 1rem; 
}

.price {
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--text-dark);
}

/* --- DE NIEUWE PROFESSIONELE KNOP --- */
.btn-open { 
    background: var(--btn-gradient); 
    color: white; 
    border: none; 
    padding: 10px 22px; 
    border-radius: 50px; /* Mooie ronde vorm */
    cursor: pointer; 
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase; /* Krachtige uitstraling */
    letter-spacing: 1px;
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3); /* Subtiele schaduw */
    transition: all 0.3s ease; /* Vloeiende beweging */
}

.btn-open:hover { 
    transform: translateY(-2px); /* Komt omhoog */
    box-shadow: 0 6px 15px rgba(108, 92, 231, 0.4); 
    filter: brightness(1.1); /* Wordt iets lichter */
}

.btn-open:active {
    transform: translateY(0); /* Zakt in bij klikken */
}

/* Modal / Popup Styles */
.modal { 
    display: none; 
    position: fixed; 
    z-index: 1000; 
    left: 0; 
    top: 0; 
    width: 100%; 
    height: 100%; 
    background: rgba(0,0,0,0.85); 
    justify-content: center; 
    align-items: center; 
}

.modal-content { 
    background: white; 
    width: 90%; 
    max-width: 500px; 
    max-height: 90vh; 
    border-radius: 15px; 
    overflow-y: auto; 
    display: flex; 
    flex-direction: column; 
}

.modal-content img { 
    width: 100%; 
    max-height: 250px; 
    object-fit: contain; 
    background: #f9f9f9; 
}

#modalDescription { 
    padding: 20px; 
}

.close-button { 
    position: absolute; 
    top: 15px; 
    right: 25px; 
    color: white; 
    font-size: 35px; 
    cursor: pointer; 
}

#paypal-button-container { 
    margin-top: 20px; 
}