/* =====================================================
   PDF to YAML Converter - Unified Styles
   متوافق مع نظام tools.css
   ===================================================== */

/* =====================================================
   1. CSS Variables (موحدة مع بقية الأدوات)
   ===================================================== */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eef2ff;
    --secondary: #f3f4f6;
    --secondary-hover: #e5e7eb;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --warning: #f59e0b;
    
    /* Text */
    --text: #1f2937;
    --text-light: #6b7280;
    --text-white: #ffffff;
    
    /* Borders */
    --border: #e5e7eb;
    --border-dark: #d1d5db;
    
    /* Backgrounds */
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-blue: #f0f9ff;
    --bg-success: #d1fae5;
    --bg-danger: #fee2e2;
    --bg-warning: #fef3c7;
    
    /* Effects */
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-hover: 0 4px 12px rgba(0,0,0,0.1);
    
    /* Sizes */
    --container-max: 720px;
    --container-wide: 1100px;
}

/* =====================================================
   2. Upload Area (موحد)
   ===================================================== */
.upload-area {
    max-width: var(--container-max);
    margin: 0 auto 20px;
    border: 2px dashed var(--border-dark);
    border-radius: var(--radius);
    background: var(--bg-light);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.upload-area:hover {
    border-color: var(--primary);
    background: #f0f4ff;
}
.upload-area.drag-over {
    border-color: var(--primary) !important;
    background: #e8edff !important;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}
.upload-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
.upload-icon {
    font-size: 48px;
    color: var(--primary);
    opacity: 0.8;
}
.upload-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
}
.upload-hint {
    font-size: 14px;
    color: var(--text-light);
}
.upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: var(--text-white);
    border: none;
    padding: 10px 24px;
    border-radius: 30px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}
.upload-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.02);
}
.upload-btn:active {
    transform: scale(0.98);
}

/* =====================================================
   3. File Box (موحد)
   ===================================================== */
.file-box {
    max-width: var(--container-max);
    margin: 0 auto 20px;
    padding: 16px 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: none;
}
.file-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.file-icon {
    font-size: 20px;
    color: var(--primary);
}
.file-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    flex: 1;
    word-break: break-word;
}
.file-size {
    font-size: 13px;
    color: var(--text-light);
}
.file-pages {
    font-size: 13px;
    color: var(--text-light);
}
.remove-file {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: var(--bg-danger);
    border: none;
    cursor: pointer;
    color: var(--danger);
    font-size: 16px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.remove-file:hover {
    background: #fecaca;
    transform: scale(1.05);
}

/* =====================================================
   4. Settings Panel (موحد)
   ===================================================== */
.tool-settings {
    max-width: var(--container-max);
    margin: 0 auto 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    display: none;
}
.tool-settings h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 16px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
}
.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px 30px;
}
.option-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.option-group.full-width {
    grid-column: 1 / -1;
}
.option-group label {
    font-weight: 500;
    font-size: 14px;
    color: var(--text);
}
.option-group select,
.option-group input[type="text"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-white);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.option-group select:focus,
.option-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.option-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 2px;
}
.option-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}
.option-checkbox label {
    font-weight: 400;
    font-size: 14px;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
}
.option-checkbox label i {
    color: var(--primary);
}

/* =====================================================
   5. Result Section (YAML Output)
   ===================================================== */
.result-section {
    max-width: var(--container-max);
    margin: 0 auto 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    display: none;
}
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}
.result-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.result-title i {
    color: var(--primary);
}
.result-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.result-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: none;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: inherit;
    line-height: 1.4;
}
.result-actions .btn-secondary {
    background: var(--secondary);
    color: var(--text);
    border: 1px solid var(--border-dark);
}
.result-actions .btn-secondary:hover {
    background: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.result-actions .btn-secondary:active {
    transform: scale(0.96);
}
.result-actions .btn-success {
    background: var(--success);
    color: var(--text-white);
}
.result-actions .btn-success:hover {
    background: var(--success-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}
.result-actions .btn-success:active {
    transform: scale(0.96);
}
.result-actions .btn i {
    font-size: 14px;
    color: inherit;
}
.result-actions .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}
.result-actions .btn-secondary.copied {
    background: var(--bg-success);
    color: #065f46;
    border-color: var(--success);
}
.result-actions .btn-secondary.copied:hover {
    background: #a7f3d0;
}

.yaml-container {
    background: #0f172a;
    color: #e2e8f0;
    border-radius: var(--radius-sm);
    padding: 16px;
    max-height: 450px;
    min-height: 200px;
    overflow: auto;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
    border: 1px solid #1e293b;
}
.yaml-container:empty::before {
    content: "YAML content will appear here...";
    color: #94a3b8;
    font-style: italic;
}

/* =====================================================
   6. Progress Bar (موحد)
   ===================================================== */
.progress-container {
    max-width: var(--container-max);
    margin: 0 auto 16px;
    position: relative;
    height: 24px;
    background: var(--border);
    border-radius: 30px;
    overflow: hidden;
    display: none;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), #4f46e5);
    border-radius: 30px;
    transition: width 0.3s ease;
}
.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
}

/* =====================================================
   7. Action Buttons (موحد)
   ===================================================== */
.action-buttons {
    max-width: var(--container-max);
    margin: 0 auto 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    display: none;
}
.action-buttons .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}
.action-buttons .btn:active {
    transform: scale(0.97);
}
.action-buttons .btn-secondary {
    background: var(--secondary);
    color: var(--text);
    border: 1px solid var(--border);
}
.action-buttons .btn-secondary:hover {
    background: var(--secondary-hover);
}
.action-buttons .btn-primary {
    background: var(--primary);
    color: var(--text-white);
}
.action-buttons .btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.action-buttons .btn-success {
    background: var(--success);
    color: var(--text-white);
}
.action-buttons .btn-success:hover {
    background: var(--success-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}
.action-buttons .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* =====================================================
   8. Messages (موحد)
   ===================================================== */
.success-message,
.error-message,
.warning-message {
    max-width: var(--container-max);
    margin: 0 auto 16px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    display: none;
    align-items: center;
    gap: 8px;
}
.success-message {
    background: var(--bg-success);
    color: #065f46;
    border-left: 4px solid var(--success);
    text-align: center;
    justify-content: center;
}
.success-message i {
    color: var(--success);
}
.error-message {
    background: var(--bg-danger);
    color: #991b1b;
    border-left: 4px solid var(--danger);
}
.warning-message {
    background: var(--bg-warning);
    color: #92400e;
    border-left: 4px solid var(--warning);
}
.warning-message i {
    color: var(--warning);
}

/* =====================================================
   9. Loading Indicator (موحد)
   ===================================================== */
.loading {
    max-width: var(--container-max);
    margin: 0 auto 16px;
    display: none;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: var(--radius);
}
.loading-spinner {
    font-size: 24px;
    color: var(--primary);
    animation: spin 1s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* =====================================================
   10. Thumbnails Section
   ===================================================== */
.thumbnails-section {
    max-width: var(--container-max);
    margin: 0 auto 20px;
    display: none;
}
.thumbnails-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}
.thumbnails-header h4 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    color: var(--text);
}
.thumbnails-info {
    font-size: 12px;
    color: var(--text-light);
}

.thumbnails-grid-wrapper {
    width: 100%;
}
.thumbnails-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.thumbnail-item {
    border: 3px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    position: relative;
    background: #fff;
    box-shadow: var(--shadow);
    transition: transform 0.15s, border-color 0.2s, box-shadow 0.2s;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.thumbnail-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-hover);
}
.thumbnail-item.selected {
    border-color: #22c55e;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.3);
}
.thumbnail-item .page-number {
    position: absolute;
    bottom: 6px;
    right: 8px;
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    font-size: 11px;
    padding: 2px 10px;
    border-radius: 12px;
    font-weight: 500;
    pointer-events: none;
}
.thumbnail-item .selection-badge {
    position: absolute;
    top: 6px;
    left: 6px;
    background: #22c55e;
    color: #fff;
    border-radius: 50%;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}
.thumbnail-item.selected .selection-badge {
    opacity: 1;
}
.thumbnail-item canvas {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1.4;
    object-fit: contain;
}

/* ===== Thumbnails Pagination ===== */
.thumb-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    padding: 12px 0 4px;
}
.thumb-pagination button {
    padding: 6px 16px;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    background: var(--bg-light);
    cursor: pointer;
    font-size: 14px;
    transition: background 0.15s;
}
.thumb-pagination button:hover:not(:disabled) {
    background: var(--secondary-hover);
}
.thumb-pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.thumb-pagination .page-indicator {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
}

/* =====================================================
   11. Page Selection Group
   ===================================================== */
.page-selection-group {
    max-width: var(--container-max);
    margin: 0 auto 20px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    display: none;
}
.page-selection-group label {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
}
.badge {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    padding: 0 12px;
    border-radius: 20px;
    line-height: 24px;
    min-width: 40px;
    text-align: center;
}
.page-selection-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-top: 8px;
}
.page-selection-controls input[data-tool-pages] {
    flex: 1;
    min-width: 180px;
    padding: 8px 12px;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-white);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.page-selection-controls input[data-tool-pages]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.page-selection-buttons {
    display: flex;
    gap: 6px;
}
.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
    border-radius: 6px;
}
.page-selection-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-light);
}
.page-selection-hint i {
    margin-right: 4px;
}

/* =====================================================
   12. Zoomed Preview
   ===================================================== */
.preview-wrapper {
    max-width: var(--container-max);
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    display: none;
}
.preview-canvas-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 400px;
}
.preview-canvas-wrapper canvas {
    width: 70% !important;
    max-width: 70% !important;
    height: auto !important;
    display: block;
    margin: 0 auto;
    background: #fff;
    box-shadow: var(--shadow-hover);
    border-radius: 4px;
}

/* =====================================================
   13. Utilities
   ===================================================== */
.hidden {
    display: none !important;
}

/* =====================================================
   14. Responsive Design
   ===================================================== */
@media (max-width: 768px) {
    .options-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .thumbnails-grid {
        grid-template-columns: repeat(3, 1fr);
        padding: 10px;
        gap: 8px;
    }
    .thumbnail-item .page-number {
        font-size: 9px;
        padding: 1px 6px;
    }
    .thumb-pagination {
        gap: 10px;
    }
    .thumb-pagination button {
        padding: 4px 12px;
        font-size: 12px;
    }
    .action-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    .action-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    .page-selection-controls {
        flex-direction: column;
        align-items: stretch;
    }
    .page-selection-controls input[data-tool-pages] {
        min-width: unset;
    }
    .page-selection-buttons {
        justify-content: center;
    }
    .upload-area {
        padding: 30px 16px;
    }
    .upload-text {
        font-size: 18px;
    }
    .upload-icon {
        font-size: 36px;
    }
    .upload-btn {
        padding: 8px 18px;
        font-size: 13px;
    }
    .result-header {
        flex-direction: column;
        align-items: stretch;
    }
    .result-actions {
        justify-content: center;
    }
    .file-row {
        flex-direction: column;
        align-items: flex-start;
    }
    .tool-settings {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .thumbnails-grid {
        grid-template-columns: repeat(2, 1fr);
        padding: 8px;
        gap: 6px;
    }
    .thumbnail-item .page-number {
        font-size: 8px;
        padding: 1px 4px;
        bottom: 4px;
        right: 4px;
    }
    .thumbnail-item .selection-badge {
        width: 18px;
        height: 18px;
        font-size: 10px;
        top: 4px;
        left: 4px;
    }
    .result-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .result-actions .btn {
        width: 100%;
        justify-content: center;
    }
}