.image-upscaler-wrapper .tool-card {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    border-top: 4px solid var(--primary) !important;
}

.image-upscaler-wrapper h1 {
    font-size: 2.25rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

/* Upload Area */
.upload-area {
    border: 3px dashed var(--primary-light);
    border-radius: var(--radius);
    padding: 4rem 2rem;
    background-color: var(--gray-50);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area:hover, .upload-area.dragover {
    background-color: rgba(0, 102, 204, 0.05);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* Editor Area */
.editor-area {
    margin-top: 1rem;
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.workspace-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 2rem;
    align-items: stretch;
}

/* Canvas/Preview Container */
.preview-container {
    width: 100%;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Transparent checkerboard pattern */
    background-image: linear-gradient(45deg, #e2e8f0 25%, transparent 25%), linear-gradient(-45deg, #e2e8f0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e2e8f0 75%), linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: #f8fafc;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    padding: 1.5rem;
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.05);
}

/* AI Pulse Animation */
.ai-pulse-animation {
    width: 60px;
    height: 60px;
    background: var(--primary);
    border-radius: 50%;
    position: relative;
}

.ai-pulse-animation::before, .ai-pulse-animation::after {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    animation: pulse 1.5s linear infinite;
    opacity: 0;
}

.ai-pulse-animation::after {
    animation-delay: 0.75s;
}

@keyframes pulse {
    0% { transform: scale(0.5); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Controls Panel */
.controls-panel {
    background: var(--gray-50);
    padding: 1.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.control-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 0.5rem;
}

/* Custom Select */
.custom-select {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-300);
    background-color: var(--white);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: var(--text);
    outline: none;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
}

.custom-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Buttons */
.btn {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    font-size: 0.95rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-emerald {
    background: #10b981;
    color: white;
}
.btn-emerald:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-2px);
}

.btn-action {
    background: var(--white);
    border: 1px solid var(--gray-300);
    color: var(--text);
}
.btn-action:hover:not(:disabled) {
    background: var(--gray-100);
    border-color: var(--primary);
    color: var(--primary);
}

/* Responsive */
@media (max-width: 992px) {
    .workspace-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .preview-container {
        min-height: 300px;
    }
    .image-upscaler-wrapper .tool-card {
        padding: 1.5rem 1rem;
    }
}