main {
    width: 1000px;
}

/* Custom 3-columns per row grid override */
.three-cols-grid {
    grid-template-columns: repeat(3, 1fr) !important;
}

/* Presets Bar */
.presets-container {
    width: 100%;
    margin-bottom: 25px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background-color: #f8f9fa;
    padding: 15px 20px;
    border-radius: 6px;
    border: 1px solid #e9ecef;
    box-sizing: border-box;
}

.preset-label {
    font-weight: 600;
    font-size: 15px;
    color: #495057;
}

.preset-buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
    width: 100%;
}

.filter-preset-btn {
    background-color: #ffffff;
    color: #495057;
    border: 1px solid #ced4da;
    border-radius: 4px;
    padding: 8px 12px;
    font-weight: 500;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.filter-preset-btn:hover {
    background-color: #e9ecef;
    border-color: #adb5bd;
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

.filter-preset-btn.active {
    background-color: #e3f2fd;
    color: #0d47a1;
    border-color: #4a90e2;
    font-weight: 600;
}

.reset-btn {
    background-color: #fff0f0;
    color: #c53030;
    border-color: #feb2b2;
}

.reset-btn:hover {
    background-color: #fff5f5;
    border-color: #fc8181;
}

/* Image Visualizer Wrapper */
.canvas-wrapper {
    position: relative;
    display: inline-block;
    max-width: 100%;
    border: 2px dashed #aaa;
    border-radius: 8px;
    padding: 10px;
    box-sizing: border-box;
    background-color: #fafafa;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* General layout adjustments */
.controls-container {
    margin-bottom: 20px;
}

/* Responsiveness fallback */
@media (max-width: 768px) {
    .three-cols-grid {
        grid-template-columns: 1fr !important;
    }
    
    .preset-buttons-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}