.channel-svg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    min-width: 0;
    min-height: 0;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    background: white;
    transform-origin: center center;
    transition: transform 0.3s ease;
}

/* Only the bottom layer (K) should have white background and border */
#outputSvgK {
    background: white;
    border: 2px solid #ecf0f1;
}

/* Overlay channels are truly transparent */
.channel-overlay {
    background: none !important;
    border: none;
}

.file-input-container {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.file-input {
    position: relative;
    display: inline-block;
    cursor: pointer;
    background: #3498db;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    font-weight: 500;
    transition: background 0.3s;
}

.file-input:hover {
    background: #2980b9;
}

.file-input input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.image-thumbnail {
    width: 80px;
    height: 80px;
    border: 2px solid #ddd;
    border-radius: 8px;
    object-fit: cover;
    display: none;
    background: #f8f9fa;
}

.image-thumbnail.show {
    display: block;
}

.canvas-container {
    display: flex;
    justify-content: center;
    height: 100%;
    align-items: flex-start;
    padding-top: 20px;
}

.canvas-wrapper {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 100%;
    overflow: visible;
    display: inline-block;
}

.canvas-wrapper h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

svg {
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    transform-origin: center center;
    transition: transform 0.3s ease;
}

.download-btn {
    background: #27ae60;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    margin-top: 15px;
    transition: background 0.3s;
}

.download-btn:hover {
    background: #219a52;
}

.download-btn:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

.status {
    padding: 10px;
    border-radius: 6px;
    margin-top: 10px;
    font-weight: 500;
}

.status.processing {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.status.complete {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.download-buttons .download-btn {
    margin: 0;
}

.checkbox-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 5px;
    min-width: auto;
    font-weight: 500;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
}

.channel-btn {
    font-size: 12px;
    padding: 8px 16px;
}

.color-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.color-control {
    display: flex;
    align-items: center;
    gap: 6px;
}

.color-control label {
    min-width: auto;
    font-weight: 500;
    font-size: 13px;
}

.color-control input[type="color"] {
    width: 35px;
    height: 30px;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
    background: none;
}

.color-control input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-control input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 3px;
}

.recalculate-btn {
    background: #3498db;
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-left: auto;
}

.recalculate-btn:hover {
    background: #2980b9;
}

.recalculate-btn:active {
    background: #21618c;
    transform: translateY(1px);
}

.white-point-controls {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.white-point-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.white-point-control label {
    min-width: 20px;
    font-weight: 500;
    font-size: 13px;
}

.white-point-control input[type="range"] {
    flex: 1;
    min-width: 80px;
    height: 4px;
}

.white-point-control input[type="number"] {
    width: 60px;
    font-size: 12px;
}