/* Tool UI Layout Styles */
.tool-header {
    text-align: center;
    padding: 3rem 0 2rem;
}

.tool-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.tool-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Upload Zone */
.upload-zone {
    background: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 4rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-zone.dragover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.upload-subtext {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Workspace / Processing Area */
.tool-workspace {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    margin-top: 2rem;
    display: none;
    box-shadow: var(--glass-shadow);
}

.preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.image-preview {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.image-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    background: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAMUlEQVQ4T2NkYNggwEADMFIBo2EY1UAw+I+E/I+EDHqH0Uww+I+m+o9qIBj8RzSWAQBw+whz2YvH6gAAAABJRU5ErkJggg=='); /* Checkerboard for transparency */
}

.file-stats {
    display: flex;
    justify-content: space-between;
    background: var(--bg-alt);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    font-weight: 600;
}

.file-stats .original-size { color: var(--text-muted); text-decoration: line-through; }
.file-stats .new-size { color: #10b981; }

.controls-panel {
    flex: 1;
    min-width: 300px;
    background: var(--bg-alt);
    padding: 1.5rem;
    border-radius: 12px;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--primary-color);
}

/* Progress */
.progress-container {
    display: none;
    margin: 2rem 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Content Sections */
.tool-content {
    margin-top: 5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-box {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.feature-box .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}