/* ==========================================
   PDF Tools (iLovePDF Integration)
   ========================================== */

.pdft-container {
    padding: 0;
    margin-top: 16px;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

#pdft-main {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

/* Two-column layout */
.pdft-layout {
    display: flex;
    gap: 16px;
    flex: 1;
    min-height: 0;
}

.pdft-controls {
    width: 300px;
    flex-shrink: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Preview pane */
.pdft-preview-pane {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.08));
    border-radius: 10px;
    overflow: hidden;
    background: var(--color-bg-secondary, #FAFBFC);
}

.pdft-preview-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--color-text-muted);
}

.pdft-preview-empty.hidden {
    display: none;
}

.pdft-preview-empty-icon {
    width: 52px;
    height: 52px;
    opacity: 0.25;
    color: var(--color-text-muted);
}

.pdft-preview-empty p {
    font-size: 13px;
    margin: 0;
}

.pdft-preview-frame {
    flex: 1;
    width: 100%;
    height: 100%;
    border: none;
}

.pdft-preview-frame.hidden {
    display: none;
}

/* Operation Selector Grid */
.pdft-op-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.pdft-op-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 10px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.06));
    border-radius: 10px;
    background: var(--color-bg);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
    user-select: none;
    text-align: center;
}

.pdft-op-card:hover {
    border-color: var(--color-primary, #4F46E5);
    background: var(--color-primary-bg, rgba(79, 70, 229, 0.04));
}

.pdft-op-card.active {
    border-color: var(--color-primary, #4F46E5);
    background: var(--color-primary-bg, rgba(79, 70, 229, 0.06));
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.15);
}

.pdft-op-icon {
    width: 32px;
    height: 32px;
    color: var(--color-text-muted);
    transition: color 0.15s;
}

.pdft-op-card.active .pdft-op-icon,
.pdft-op-card:hover .pdft-op-icon {
    color: var(--color-primary, #4F46E5);
}

.pdft-op-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text);
    line-height: 1.3;
}

/* Upload Area */
.pdft-upload-area {
    margin-bottom: 16px;
}

.pdft-dropzone {
    border: 2px dashed var(--color-border, rgba(0, 0, 0, 0.12));
    border-radius: 10px;
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.pdft-dropzone:hover,
.pdft-dropzone.dragover {
    border-color: var(--color-primary, #4F46E5);
    background: var(--color-primary-bg, rgba(79, 70, 229, 0.03));
}

.pdft-dropzone-icon {
    width: 40px;
    height: 40px;
    color: var(--color-text-muted);
    margin: 0 auto 10px;
}

.pdft-dropzone-text {
    font-size: 14px;
    color: var(--color-text-muted);
}

.pdft-dropzone-text strong {
    color: var(--color-primary, #4F46E5);
    cursor: pointer;
}

.pdft-dropzone-hint {
    font-size: 12px;
    color: var(--color-text-muted);
    opacity: 0.7;
    margin-top: 6px;
}

.pdft-file-input {
    display: none;
}

/* File List */
.pdft-file-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 12px;
}

.pdft-file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.06));
    border-radius: 8px;
    background: var(--color-bg-secondary, #FAFBFC);
    font-size: 13px;
}

.pdft-file-item-icon {
    width: 18px;
    height: 18px;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.pdft-file-item-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--color-text);
}

.pdft-file-item-size {
    font-size: 11px;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.pdft-file-item-remove {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 2px;
    border-radius: 4px;
    transition: color 0.15s, background 0.15s;
    flex-shrink: 0;
}

.pdft-file-item-remove:hover {
    color: var(--color-error, #DC2626);
    background: rgba(220, 38, 38, 0.08);
}

/* Merge drag handle */
.pdft-file-item-drag {
    cursor: grab;
    color: var(--color-text-muted);
    opacity: 0.5;
    flex-shrink: 0;
}

.pdft-file-item-drag:active {
    cursor: grabbing;
}

.pdft-file-item.dragging {
    opacity: 0.4;
    border-style: dashed;
}

/* Options Panel */
.pdft-options {
    margin-bottom: 16px;
}

.pdft-option-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.06));
    border-radius: 10px;
    background: var(--color-bg-secondary, #FAFBFC);
}

.pdft-upload-area.hidden,
.pdft-actions.hidden,
.pdft-demo-notice.hidden,
.pdft-option-group.hidden {
    display: none;
}

.pdft-option-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pdft-option-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    min-width: 100px;
}

.pdft-option-input {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.12));
    border-radius: 6px;
    font-size: 13px;
    background: var(--color-bg);
    color: var(--color-text);
    max-width: 240px;
}

.pdft-option-input:focus {
    outline: none;
    border-color: var(--color-primary, #4F46E5);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.12);
}

.pdft-option-select {
    padding: 6px 10px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.12));
    border-radius: 6px;
    font-size: 13px;
    background: var(--color-bg);
    color: var(--color-text);
    max-width: 200px;
}

/* Compression level cards */
.pdft-compression-levels {
    display: flex;
    gap: 8px;
}

.pdft-compression-card {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.06));
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    font-size: 12px;
}

.pdft-compression-card:hover {
    border-color: var(--color-primary, #4F46E5);
}

.pdft-compression-card.active {
    border-color: var(--color-primary, #4F46E5);
    background: var(--color-primary-bg, rgba(79, 70, 229, 0.06));
}

.pdft-compression-title {
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--color-text);
}

.pdft-compression-desc {
    color: var(--color-text-muted);
    font-size: 11px;
}

/* Process Button */
.pdft-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 4px;
}

.pdft-process-btn {
    padding: 10px 24px;
    background: var(--color-primary, #4F46E5);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.15s, background 0.15s;
}

.pdft-process-btn:hover:not(:disabled) {
    opacity: 0.9;
}

.pdft-process-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Processing State */
.pdft-processing {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 32px 20px;
    text-align: center;
}

.pdft-processing.hidden {
    display: none;
}

.pdft-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--color-border, rgba(0, 0, 0, 0.08));
    border-top-color: var(--color-primary, #4F46E5);
    border-radius: 50%;
    animation: pdft-spin 0.8s linear infinite;
}

@keyframes pdft-spin {
    to { transform: rotate(360deg); }
}

.pdft-processing-text {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* Result State */
.pdft-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 28px 20px;
    border: 1px solid var(--color-success, #10B981);
    border-radius: 10px;
    background: rgba(16, 185, 129, 0.04);
    text-align: center;
}

.pdft-result.hidden {
    display: none;
}

.pdft-result-icon {
    width: 40px;
    height: 40px;
    color: var(--color-success, #10B981);
}

.pdft-result-text {
    font-size: 14px;
    color: var(--color-text);
    font-weight: 500;
}

.pdft-result-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.pdft-download-btn {
    padding: 8px 20px;
    background: var(--color-primary, #4F46E5);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.15s;
}

.pdft-download-btn:hover {
    opacity: 0.9;
}

.pdft-save-btn,
.pdft-reset-btn {
    padding: 8px 20px;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.12));
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.pdft-save-btn:hover,
.pdft-reset-btn:hover {
    background: var(--color-bg-secondary, #FAFBFC);
    border-color: var(--color-primary, #4F46E5);
}

/* Demo mode notice */
.pdft-demo-notice {
    padding: 16px 20px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.06));
    border-radius: 10px;
    background: var(--color-bg-secondary, #FAFBFC);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 600px) {
    .pdft-op-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pdft-option-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .pdft-option-input,
    .pdft-option-select {
        max-width: 100%;
        width: 100%;
    }
}