.wallpaper-container {
    text-align: center;
    padding: 20px;
}
.wallpaper-preview {
    width: 100%;
    max-width: 800px;
    height: 500px;
    margin: 20px auto;
    border: 2px solid #1e3c72;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}
.wallpaper-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}
.wallpaper-text {
    font-size: 36px;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
    padding: 20px;
    text-align: center;
    max-width: 80%;
}
.wallpaper-options {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
    flex-wrap: wrap;
}
.option-btn {
    padding: 10px 20px;
    border: 2px solid #1e3c72;
    background: white;
    color: #1e3c72;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.option-btn:hover, .option-btn.active {
    background: #1e3c72;
    color: white;
}
.customize-panel {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin: 20px auto;
    max-width: 600px;
    text-align: left;
}
.customize-item {
    margin: 15px 0;
}
.customize-label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #333;
}
.customize-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    box-sizing: border-box;
}
.color-picker {
    width: 100%;
    padding: 8px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    height: 40px;
    background: transparent;
}
.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
}
.control-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}
.apply-btn {
    background: #28a745;
    color: white;
}
.download-btn {
    background: #17a2b8;
    color: white;
}
.reset-btn {
    background: #dc3545;
    color: white;
}
.mode-btn {
    background: #6f42c1;
    color: white;
}
.control-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}
.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin: 20px 0;
}
.preset-item {
    height: 100px;
    border: 2px solid #ddd;
    border-radius: 5px;
    cursor: pointer;
    overflow: hidden;
    position: relative;
}
.preset-item:hover {
    border-color: #1e3c72;
    transform: scale(1.05);
}
.preset-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.6);
    color: white;
    text-align: center;
    padding: 5px;
    font-size: 12px;
}
.instructions {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin: 20px auto;
    max-width: 600px;
    text-align: left;
}
.instructions h3 {
    margin-top: 0;
    color: #1e3c72;
}
.instructions ul {
    padding-left: 20px;
}
.instructions li {
    margin-bottom: 8px;
}