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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 10px;
    font-size: 2.5em;
}

.container > p {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.qr-item {
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s;
}

.qr-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.qr-item h3 {
    font-size: 1em;
    margin-bottom: 10px;
    color: #333;
}

.qr-item p {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 10px;
}

#qrcode {
    margin: 10px auto;
}

.download-btn {
    margin-top: 10px;
    padding: 8px 16px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background 0.3s;
}

.download-btn:hover {
    background: #764ba2;
}

.download-btn:active {
    transform: scale(0.95);
}