body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #141e30, #243b55);
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 40px 0;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    width: 95%;
    max-width: 500px;
    text-align: center;
}

input, select, button {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 15px;
}

button {
    background: #243b55;
    color: white;
    cursor: pointer;
    transition: 0.3s ease;
}

button:hover {
    background: #141e30;
}

#qrcode {
    margin-top: 20px;
}

.color-section {
    margin-bottom: 15px;
    text-align: left;
}

.color-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 14px;
    color: #333;
}

.color-wrapper {
    position: relative;
    width: 100%;
}

#colorButton {
    background: #243b55;
    color: white;
    border: none;
    padding: 12px;
    width: 100%;
    border-radius: 8px;
}

#colorPicker {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 14px;
}