body {
    background: linear-gradient(135deg, #00b4d8, #0083b0); /* Blue gradient for a fresh look */
    color: #ecf0f1;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    height: 100vh;
}

.container {
    padding-top: 10%;
    background-color: rgba(0, 0, 0, 0.7); /* Dark background with some transparency for a modern feel */
    border-radius: 20px;
    padding: 30px;
    max-width: 90%;
    width: 500px;
    margin: 0 auto;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3); /* Stronger shadow for depth */
    overflow: hidden;
}

h1 {
    margin-bottom: 20px;
    font-size: 26px;
    color: #f39c12;
    text-align: center;
}

.input-group {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.input-group label {
    margin-bottom: 5px;
    font-size: 14px;
    color: #bdc3c7;
}

input, select, button {
    font-size: 16px;
    padding: 10px;
    margin: 5px 0;
    border-radius: 10px;
    border: none;
    outline: none;
    transition: all 0.3s ease;
    width: 100%;
}

input[type="color"] {
    padding: 0;
    width: 60px;
    height: 40px;
    cursor: pointer;
}

button {
    background-color: #f39c12;
    color: white;
    cursor: pointer;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

button:hover {
    background-color: #d35400;
    transform: translateY(-2px);
}

#qrcode {
    margin: 20px auto;
    display: block;
    border: 1px solid #ecf0f1;
    border-radius: 10px;
}

.slider {
    width: 100%;
}

.template-switch {
    display: flex;
    justify-content: space-around;
    margin-bottom: 15px;
}

.template-button {
    background-color: #2980b9;
    color: white;
    border: none;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    flex: 1;
    margin: 0 5px;
}

.template-button.active {
    background-color: #3498db;
}

.optional-settings {
    display: none;
    margin-top: 20px;
}

.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.fullscreen img {
    max-width: 90%;
    max-height: 90%;
    border: 5px solid #ecf0f1;
    border-radius: 10px;
}

.close-button {
    position: absolute;
    top: 20px;
    right: 30px;
    background-color: #e74c3c;
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 20px;
    cursor: pointer;
    z-index: 10000;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.close-button:hover {
    background-color: #c0392b;
}

#toggle-options {
    background-color: #27ae60;
}

#toggle-options:hover {
    background-color: #219653;
}

#download-btn {
    background-color: #3498db;
}

#download-btn:hover {
    background-color: #2980b9;
}