.qr-generator-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    font-family: Arial, sans-serif;
    background: #f9f9f9;
    border-radius: 10px;
}
.qr-header {
    text-align: center;
    margin-bottom: 30px;
}
.qr-header h2 {
    color: #2c3e50;
    margin-bottom: 10px;
}
.qr-tabs {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.tab-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.tab-btn {
    padding: 10px 15px;
    border: none;
    background: #e9ecef;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}
.tab-btn.active {
    background: #007bff;
    color: white;
}
.tab-btn:hover {
    background: #0056b3;
    color: white;
}
.tab-panel {
    display: none;
}
.tab-panel.active {
    display: block;
}
.input-group {
    margin-bottom: 15px;
}
.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}
.qr-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    box-sizing: border-box;
}
.qr-input:focus {
    outline: none;
    border-color: #007bff;
}
.vcard-grid, .wifi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}
.btn-generate {
    background: #28a745;
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
}
.btn-generate:hover {
    background: #218838;
}
.btn-generate:disabled {
    background: #6c757d;
    cursor: not-allowed;
}
.qr-result {
    display: none;
    background: white;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-top: 20px;
}
.qr-result h3 {
    color: #28a745;
    margin-top: 0;
}
#qr-preview img {
    border: 1px solid #ddd;
    border-radius: 5px;
    margin: 20px 0;
}
.btn-download {
    background: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin: 5px;
}
.btn-download:hover {
    background: #0056b3;
}
.message {
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
}
.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}
@media (max-width: 768px) {
    .qr-generator-container {
        margin: 10px;
        padding: 15px;
    }
    .tab-nav {
        flex-direction: column;
    }
    .vcard-grid, .wifi-grid {
        grid-template-columns: 1fr;
    }
}