.insert-select {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #E2E8F0;
    border-radius: 12px;
    font-size: 14px;
    background: #FFFFFF;
    color: #1E293B;
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394A3B8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}
.insert-select:focus {
    border-color: #0D9488;
    box-shadow: 0 0 0 3px rgba(13,148,136,0.15);
}
.insert-input {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #E2E8F0;
    border-radius: 12px;
    font-size: 14px;
    background: #FFFFFF;
    color: #1E293B;
    outline: none;
    transition: all 0.2s ease;
}
.insert-input:focus {
    border-color: #0D9488;
    box-shadow: 0 0 0 3px rgba(13,148,136,0.15);
}
.insert-setting-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #475569;
    margin-bottom: 6px;
}
.insert-preview-inner {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 8px;
    gap: 8px;
    height: 100%;
}
.insert-preview-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(8px);
    border-radius: 8px;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    flex-wrap: wrap;
}
.insert-nav-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid #e2e8f0;
    background: #ffffff;
    color: #475569;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}
.insert-nav-btn:hover:not(:disabled) {
    background: #f0fdfa;
    border-color: #0d9488;
    color: #0d9488;
}
.insert-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.insert-page-info {
    font-size: 14px;
    font-weight: 500;
    color: #475569;
    min-width: 80px;
    text-align: center;
}
.insert-zoom-group {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 8px;
    padding-left: 8px;
    border-left: 1px solid #E2E8F0;
}
.insert-zoom-info {
    font-size: 12px;
    color: #64748B;
    min-width: 36px;
    text-align: center;
}
#preview-canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.insert-preview-canvas-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    overflow: auto;
}
.insert-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 6px;
    max-height: 200px;
    overflow-y: auto;
    padding: 4px;
    background: #F8FAFC;
    border-radius: 8px;
}
.insert-preview-item {
    position: relative;
    border: 2px solid #E2E8F0;
    border-radius: 6px;
    cursor: pointer;
    overflow: hidden;
    transition: border-color .15s;
}
.insert-preview-item:hover {
    border-color: #0D9488;
}
.insert-preview-item.selected {
    border-color: #0D9488;
    box-shadow: 0 0 0 2px rgba(13,148,136,.2);
}
.insert-preview-item canvas {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: contain;
}
.insert-preview-item .check-icon {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #0D9488;
    color: #fff;
    font-size: 10px;
    display: none;
    align-items: center;
    justify-content: center;
}
.insert-preview-item.selected .check-icon {
    display: flex;
}
.insert-page-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,.6);
    color: #fff;
    font-size: 10px;
    text-align: center;
    padding: 1px 0;
}