body {
    font-family: 'Inter', sans-serif;
    background-color: #1a202c;
    color: #e2e8f0;
}
canvas {
    border: 2px solid #4a5568;
    border-radius: 0.5rem;
    background-color: #000;
}
#file-input {
    cursor: pointer;
}
#file-input::-webkit-file-upload-button {
    visibility: hidden;
}
#file-input::before {
    content: 'Select an Image';
    display: inline-block;
    background: linear-gradient(to right, #6366f1, #8b5cf6);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease-in-out;
    outline: none;
}
#file-input:hover::before {
    background: linear-gradient(to right, #4f46e5, #7c3aed);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
}
.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: #4a5568;
    outline: none;
    opacity: 0.7;
    -webkit-transition: .2s;
    transition: opacity .2s;
    border-radius: 4px;
}
.slider:hover {
    opacity: 1;
}
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: #8b5cf6;
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid white;
}
.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: #8b5cf6;
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid white;
}