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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 1200px;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 50px;
    color: white;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card--pxg-puzzles .card-image img {
    object-fit: contain;
    background: rgba(0, 0, 0, 0.08);
    padding: 18px;
}

.card:hover .card-image img {
    transform: scale(1.1);
}

.orb-tracker-image {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.orb-icon {
    font-size: 6rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.orb-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    padding: 0;
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.35));
}

.card-content {
    padding: 25px;
}

.card-content h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #333;
}

.card-content p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
}

footer {
    text-align: center;
    margin-top: 20px;
}

.back-link {
    display: inline-block;
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    padding: 12px 30px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.back-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(-5px);
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .cards-container {
        grid-template-columns: 1fr;
    }

    .card-image {
        height: 200px;
    }
}