#qr-generator {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.input-section {
    margin-bottom: 30px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

#qr-text {
    width: 100%;
    min-height: 100px;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    margin-bottom: 20px;
}

#qr-text:focus {
    outline: none;
    border-color: #4CAF50;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.option-group {
    display: flex;
    flex-direction: column;
}

.option-group input,
.option-group select {
    padding: 8px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

.option-group input[type="color"] {
    height: 40px;
    cursor: pointer;
}

.option-group input:focus,
.option-group select:focus {
    outline: none;
    border-color: #4CAF50;
}

.btn-primary,
.btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #4CAF50;
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.3);
}

.output-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

#qr-canvas {
    min-height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#qr-canvas canvas {
    border: 2px solid #ddd;
    border-radius: 8px;
}

.btn-secondary {
    background: #2196F3;
    color: white;
}

.btn-secondary:hover {
    background: #0b7dda;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(33, 150, 243, 0.3);
}

@media (max-width: 768px) {
    .options-grid {
        grid-template-columns: 1fr;
    }
}