body {
    font-family: Arial, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.icon-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.icon-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    background: white;
}

.icon-option img {

    -webkit-filter: drop-shadow(1px 1px 0 black)
        drop-shadow(-1px 1px 0 black)
        drop-shadow(1px -1px 0 black)
        drop-shadow(-1px -1px 0 black);

    filter: drop-shadow(1px 1px 0 black)
            drop-shadow(-1px 1px 0 black)
            drop-shadow(1px -1px 0 black)
            drop-shadow(-1px -1px 0 black);
}

.icon-option:hover {
    border-color: #4CAF50;
    transform: translateY(-2px);
}

.icon-option.selected {
    border-color: #4CAF50;
    background-color: #f0f8f0;
}

.icon-option img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.icon-option span {
    font-size: 12px;
    margin-top: 5px;
    text-align: center;
}

.font-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.range-control {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.range-control input[type="range"] {
    width: 100%;
}

.range-value {
    font-size: 12px;
    color: #666;
    text-align: center;
}

.collapsible {
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-top: 10px;
}

.collapsible-header {
    padding: 12px 15px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    color: #333;
    user-select: none;
}

.collapsible-header:hover {
    background-color: #e9ecef;
}

.collapsible-arrow {
    transition: transform 0.3s;
    font-size: 12px;
}

.collapsible-arrow.expanded {
    transform: rotate(180deg);
}

.collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 15px;
}

.collapsible-content.expanded {
    max-height: 500px;
    padding: 15px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-weight: bold;
    color: #333;
}

input[type="text"], input[type="color"], input[type="number"], select {
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

input[type="text"]:focus, input[type="color"]:focus, input[type="number"]:focus, select:focus {
    outline: none;
    border-color: #4CAF50;
}

input[type="file"] {
    padding: 10px;
    border: 2px dashed #ddd;
    border-radius: 5px;
    background: #f9f9f9;
}

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

#preview-canvas {
    border: 2px solid #ddd;
    border-radius: 10px;
    max-width: 100%;
    height: auto;
}

.button-group {
    display: flex;
    gap: 10px;
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.primary-btn:hover {
    background-color: #45a049;
}

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

.secondary-btn:hover {
    background-color: #1976D2;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.color-preview {
    width: 30px;
    height: 30px;
    border-radius: 5px;
    border: 2px solid #ddd;
    display: inline-block;
    margin-left: 10px;
    cursor: pointer;
    transition: transform 0.2s;
}

.color-preview:hover {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}