.pdf-tools {
    color: var(--text-primary);
    max-width: 800px;
    margin: 0 auto;
}

[hidden] {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.pdf-tools__header {
    margin-bottom: 1.5rem;
}

.pdf-tools__header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pdf-tools__header p {
    color: var(--text-secondary);
    margin: 0.25rem 0;
}

.pdf-tools__status {
    min-height: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.pdf-alert {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-sm);
    margin: 0.75rem 0;
    border-left: 4px solid var(--primary);
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--text-primary);
}

.pdf-banner-alert {
    border-left-color: var(--danger);
    background: color-mix(in srgb, var(--danger) 15%, transparent);
}

.pdf-accordion {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.pdf-accordion__item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.pdf-accordion__header {
    margin: 0;
    padding: 0;
}

.pdf-accordion__trigger {
    width: 100%;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1.25rem;
    background: var(--bg-card);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: background-color 0.15s ease;
}

.pdf-accordion__trigger:hover {
    background: color-mix(in srgb, var(--text-primary) 5%, transparent);
}

.pdf-accordion__trigger[aria-expanded="true"] {
    border-bottom: 1px solid var(--border-color);
    background: color-mix(in srgb, var(--primary) 8%, var(--bg-card));
}

.pdf-accordion__title {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.pdf-accordion__panel {
    padding: 1.25rem;
    background: var(--bg-card);
}

.pdf-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    background: color-mix(in srgb, var(--success) 20%, transparent);
    color: var(--success);
    border: 1px solid color-mix(in srgb, var(--success) 40%, transparent);
}

.pdf-dropzone,
.unified-dropzone {
    border: 2px dashed rgba(99, 102, 241, 0.35);
    border-radius: 14px;
    padding: 2.2rem 1.5rem;
    text-align: center;
    background: rgba(99, 102, 241, 0.02);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    margin-bottom: 1.25rem;
    position: relative;
}

.pdf-dropzone:hover, .pdf-dropzone:focus-within, .pdf-dropzone.is-drag-over,
.unified-dropzone:hover, .unified-dropzone:focus-within, .unified-dropzone.is-drag-over {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.06);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -4px rgba(79, 70, 229, 0.15);
}

.pdf-dropzone label,
.unified-dropzone label {
    display: block;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.pdf-dropzone input[type="file"],
.unified-dropzone input[type="file"] {
    max-width: 100%;
    margin-top: 0.25rem;
}

.pdf-file-list {
    margin: 0.5rem 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.pdf-text-actions {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 1rem;
}

.pdf-text-action-group {
    padding: 1.25rem;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.ocr-priority-card {
    order: 1;
    border: 1.5px solid var(--primary) !important;
    background: rgba(79, 70, 229, 0.03) !important;
    box-shadow: 0 4px 20px -4px rgba(79, 70, 229, 0.12);
}

.ocr-secondary-card {
    order: 2;
    border: 1px solid var(--border-color);
    background: var(--bg-subtle);
    padding: 0.85rem 1.25rem;
    border-radius: 10px;
}

.pdf-text-action-heading {
    font-weight: 600;
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
}

.pdf-details {
    margin: 0.75rem 0;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 0.75rem;
    background: var(--bg-base);
}

.pdf-details summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.25rem 0;
}

.pdf-details__body {
    padding-top: 0.75rem;
}

.pdf-tools label {
    display: block;
    color: var(--text-secondary);
    margin: 0.75rem 0 0.3rem;
    font-size: 0.9rem;
}

.pdf-tools input[type="text"],
.pdf-tools select,
.pdf-tools textarea {
    box-sizing: border-box;
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-base);
    color: var(--text-primary);
    padding: 0.65rem;
    font: inherit;
    min-width: 0;
}

.pdf-tools textarea {
    min-height: 12rem;
    resize: vertical;
    font-family: monospace;
    font-size: 0.95rem;
}

.pdf-tools button {
    min-height: 44px;
    padding: 0.5rem 1rem;
    cursor: pointer;
}

.pdf-tools button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pdf-tools button:focus-visible,
.pdf-tools input:focus-visible,
.pdf-tools select:focus-visible,
.pdf-tools textarea:focus-visible,
.pdf-dropzone:focus-visible {
    outline: 3px solid var(--primary-light);
    outline-offset: 2px;
}

.pdf-tools__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    align-items: center;
    margin-top: 0.75rem;
}

.pdf-progress-wrap {
    margin-top: 0.75rem;
}

.pdf-tools progress {
    width: 100%;
    min-height: 14px;
    border-radius: 4px;
    overflow: hidden;
}

/* Modern Live OCR Status & Animated Progress Card */
.ocr-live-status-card {
    background: var(--bg-card, #1e293b);
    border: 1px solid rgba(59, 130, 246, 0.4);
    border-radius: 14px;
    padding: 1.15rem 1.4rem;
    margin: 1.1rem 0;
    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.3), 0 0 24px rgba(59, 130, 246, 0.15);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: ocr-card-appear 0.35s ease-out;
}

[data-theme="light"] .ocr-live-status-card {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.15), 0 2px 10px rgba(0, 0, 0, 0.05);
}

@keyframes ocr-card-appear {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.ocr-live-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.9rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ocr-live-pulse-wrap {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.ocr-pulse-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #3b82f6;
    display: inline-block;
    position: relative;
    box-shadow: 0 0 10px #3b82f6;
}

.ocr-pulse-dot::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid #3b82f6;
    animation: pulse-radar 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
}

@keyframes pulse-radar {
    0% {
        transform: scale(0.6);
        opacity: 1;
    }
    100% {
        transform: scale(2.2);
        opacity: 0;
    }
}

.ocr-badge-stage {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.18);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.35);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.ocr-badge-stage.badge-prepare {
    background: rgba(245, 158, 11, 0.18);
    color: #fbbf24;
    border-color: rgba(245, 158, 11, 0.35);
}

.ocr-badge-stage.badge-ocr {
    background: rgba(139, 92, 246, 0.18);
    color: #c084fc;
    border-color: rgba(139, 92, 246, 0.35);
}

.ocr-badge-stage.badge-success {
    background: rgba(16, 185, 129, 0.18);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.35);
}

.ocr-badge-stage.badge-error {
    background: rgba(239, 68, 68, 0.18);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.35);
}

.ocr-live-meta {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.ocr-badge-page {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 11px;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.16);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.35);
}

.ocr-badge-percent {
    font-size: 1.15rem;
    font-weight: 800;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    color: var(--primary-light, #3b82f6);
    min-width: 48px;
    text-align: right;
}

.ocr-live-body {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.ocr-live-icon-and-text {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.ocr-live-icon {
    font-size: 1.45rem;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.25);
    flex-shrink: 0;
}

.ocr-live-icon.spin-animation {
    animation: icon-gear-spin 2.2s linear infinite;
}

@keyframes icon-gear-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.ocr-live-message-wrap {
    flex: 1;
    min-width: 0;
}

.ocr-live-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    word-break: break-word;
}

.ocr-live-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
    line-height: 1.3;
}

/* Animated Progress Bar */
.ocr-live-bar-container {
    height: 12px;
    width: 100%;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .ocr-live-bar-container {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.06);
}

.ocr-live-bar-fill {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
    position: relative;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.5);
    overflow: hidden;
}

.ocr-live-bar-fill.is-completed {
    background: linear-gradient(90deg, #10b981 0%, #059669 100%);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.5);
}

/* Shimmer Wave running across progress bar */
.ocr-live-bar-shimmer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.45) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: bar-shimmer-run 1.5s linear infinite;
}

@keyframes bar-shimmer-run {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.pdf-panel-status {
    min-height: 1.25rem;
    margin: 0.5rem 0 0 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pdf-panel-result {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.pdf-preview-host {
    margin-top: 1rem;
}

.pdf-tools__preview {
    margin-top: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    background: var(--bg-base);
    overflow: auto;
}

.pdf-preview__controls {
    justify-content: center;
    margin-bottom: 0.75rem;
}

.pdf-preview__page-indicator {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0 0.5rem;
}

.pdf-tools__preview canvas {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    background: var(--bg-base);
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius-sm);
}

@media (max-width: 600px) {
    .pdf-tools__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .pdf-tools__actions button {
        width: 100%;
    }

    .pdf-preview__controls {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .pdf-preview__controls button {
        width: auto;
        flex: 1 1 auto;
    }
}

/* Unified PDF Editor Styles */
.pdf-editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem;
    margin: 1rem 0;
    padding: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
}

.pdf-editor-toolbar__group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.pdf-thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1.25rem;
    margin: 1.5rem 0;
    min-height: 50px;
}

.pdf-page-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.6rem;
    display: flex;
    flex-direction: column;
    position: relative;
    user-select: none;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    cursor: grab;
}

.pdf-page-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.pdf-page-card.is-selected {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.pdf-page-card.is-dragging {
    opacity: 0.4;
    cursor: grabbing;
}

.pdf-page-card.drag-over {
    border-color: var(--success);
    transform: scale(1.03);
}

.pdf-page-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.pdf-page-card__badge {
    background: var(--primary);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

.pdf-page-card__header-actions {
    display: flex;
    gap: 0.25rem;
}

.pdf-card-btn {
    min-height: 28px !important;
    height: 28px;
    padding: 0 0.5rem !important;
    font-size: 0.8rem !important;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: var(--bg-base);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    line-height: 1;
}

.pdf-card-btn:hover {
    background: var(--bg-hover);
}

.pdf-card-btn--rotate {
    color: var(--info);
}

.pdf-card-btn--delete {
    color: var(--danger);
}

.pdf-card-btn--move {
    font-size: 0.75rem !important;
    padding: 0 0.4rem !important;
}

.pdf-page-card__thumbnail {
    height: 180px;
    background: var(--bg-primary);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin: 0.25rem 0 0.6rem;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.pdf-thumbnail-canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.pdf-page-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 0.4rem;
    border-top: 1px solid var(--border-color);
}

.pdf-page-card__reorder {
    display: flex;
    gap: 0.25rem;
}

.pdf-page-card__select-label {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0 !important;
    cursor: pointer;
}

.pdf-page-card__select-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    min-height: 16px;
    cursor: pointer;
}

.pdf-editor-export-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
}

.pdf-badge-info {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.btn-outline-danger {
    border: 1px solid var(--danger);
    color: var(--danger);
    background: transparent;
}

.btn-outline-danger:hover {
    background: var(--bg-hover);
}

/* Modal Fullscreen Preview */
.pdf-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-modal[hidden] {
    display: none !important;
}

.pdf-modal__backdrop {
    position: absolute;
    inset: 0;
    background: var(--bg-secondary);
    backdrop-filter: blur(4px);
}

.pdf-modal__content {
    position: relative;
    z-index: 10000;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 90vw;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.pdf-modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.pdf-modal__title {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.pdf-modal-btn--delete {
    color: var(--danger) !important;
}

.pdf-modal-btn--delete:hover {
    background: var(--bg-hover) !important;
}

.pdf-modal__close {
    min-height: 32px !important;
    background: transparent;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.pdf-modal__close:hover {
    color: var(--text-primary);
}

.pdf-modal__body {
    padding: 1rem;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    background: var(--bg-base);
}

.pdf-modal__body canvas {
    max-width: 100%;
    max-height: 65vh;
    object-fit: contain;
    box-shadow: var(--shadow-md);
    background: var(--bg-primary);
    border-radius: 4px;
}

.pdf-modal__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-color);
}


/* === A4 VISUAL FORM PREVIEW STYLES (Decree 30/2020/ND-CP) === */
.pdf-view-mode-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.pdf-view-mode-tabs .btn {
    min-height: 36px;
    padding: 0.35rem 0.85rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.15s ease;
}

.pdf-view-mode-tabs .btn.active {
    background-color: var(--color-primary, #2563eb);
    color: #ffffff;
    border-color: var(--color-primary, #2563eb);
}

.pdf-a4-preview-container {
    background: var(--bg-base, #f1f5f9);
    padding: 1.5rem 1rem;
    border-radius: 8px;
    overflow-x: auto;
    display: flex;
    justify-content: center;
}

.pdf-a4-preview-sheet {
    background: #ffffff !important;
    color: #111827 !important;
    width: 100%;
    max-width: 720px;
    min-height: 900px;
    padding: 2.5rem 2.2rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    font-family: 'Times New Roman', Times, 'Liberation Serif', serif;
    font-size: 13pt;
    line-height: 1.35;
    box-sizing: border-box;
}

.a4-document-inner {
    width: 100%;
}

.a4-empty-hint {
    text-align: center;
    color: #64748b;
    padding: 3rem 1rem;
    font-style: italic;
}

.a4-header-grid {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.a4-header-left {
    width: 44%;
    text-align: center;
}

.a4-header-right {
    width: 52%;
    text-align: center;
}

.a4-header-line {
    font-size: 12pt;
    line-height: 1.25;
    margin-bottom: 2px;
}

.a4-bold {
    font-weight: 700;
}

.a4-quoc-hieu {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 12pt;
}

.a4-tieu-ngu {
    font-weight: 700;
    font-size: 12pt;
    border-bottom: 1px solid #111827;
    display: inline-block;
    padding-bottom: 2px;
}

.a4-date {
    text-align: right;
    font-style: italic;
    font-size: 12pt;
    margin-top: 6px;
}

.a4-date-standalone {
    text-align: right;
    font-style: italic;
    font-size: 12pt;
    margin-bottom: 0.5rem;
}

.a4-title {
    text-align: center;
    font-weight: 700;
    font-size: 14pt;
    text-transform: uppercase;
    margin: 1.25rem 0 0.5rem 0;
}

.a4-section-heading {
    text-align: left;
    font-weight: 700;
    font-size: 13pt;
    margin: 1rem 0 0.35rem 0;
}

.a4-paragraph {
    text-align: justify;
    text-indent: 1.27cm;
    margin: 0 0 0.5rem 0;
    font-size: 13pt;
}

.a4-signature-grid {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: 2rem;
    page-break-inside: avoid;
}

.a4-noi-nhan {
    width: 44%;
    text-align: left;
    font-size: 11pt;
    font-style: italic;
    line-height: 1.2;
}

.a4-noi-nhan-title {
    font-weight: 700;
    font-style: italic;
    margin-bottom: 3px;
}

.a4-noi-nhan-item {
    padding-left: 8px;
}

.a4-signer {
    width: 52%;
    text-align: center;
    font-size: 12pt;
}

.a4-signer-title {
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 4rem;
}

.a4-signer-name {
    font-weight: 700;
}

/* Modern Tabs Navigation */
.pdf-tabs {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.pdf-tabs__nav {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.5rem;
    background: color-mix(in srgb, var(--bg-card) 85%, transparent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 0.5rem;
    border-radius: 16px;
    border: 1px solid color-mix(in srgb, var(--border-color) 60%, transparent);
    box-shadow: 0 4px 24px -6px rgba(0, 0, 0, 0.08);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    position: sticky;
    top: 60px;
    z-index: 99;
}
.pdf-tabs__nav::-webkit-scrollbar {
    display: none;
}

.pdf-tabs__trigger {
    flex: 1;
    min-width: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.25rem;
    background: transparent;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.pdf-tabs__trigger:hover {
    color: var(--text-primary);
    background: color-mix(in srgb, var(--text-primary) 5%, transparent);
}

.pdf-tabs__trigger.active {
    background: var(--primary);
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.pdf-tabs__trigger.active .pdf-tabs__icon {
    transform: scale(1.1);
}

.pdf-tabs__icon {
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.pdf-tabs__panel {
    animation: fadeIn 0.4s ease forwards;
    scroll-margin-top: 140px;
}

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

/* Glassmorphism for Scanner Area */
.scanner-card {
    background: color-mix(in srgb, var(--bg-card) 70%, transparent) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid color-mix(in srgb, var(--border-color) 40%, transparent) !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05) !important;
    border-radius: 20px !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.scanner-card:hover {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.08) !important;
}

/* Smooth gradients for dropzones */
.pdf-dropzone, .source-actions-grid > .btn-outline {
    background: linear-gradient(145deg, color-mix(in srgb, var(--bg-card) 50%, transparent), color-mix(in srgb, var(--bg-card) 100%, transparent));
    border: 2px dashed color-mix(in srgb, var(--primary) 40%, transparent);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.pdf-dropzone:hover, .pdf-dropzone:focus-within, .source-actions-grid > .btn-outline:hover {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 5%, var(--bg-card));
    transform: translateY(-2px);
}

/* Tab Panel Fade-Slide Transition */
.pdf-tabs__panel {
    animation: tab-panel-enter 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes tab-panel-enter {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Subtle Interactive Button & Card Feedback */
.pdf-tools button:not(:disabled),
.pdf-tools .btn:not(:disabled) {
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.pdf-tools button:not(:disabled):hover,
.pdf-tools .btn:not(:disabled):hover {
    transform: translateY(-1px);
}

.pdf-tools button:not(:disabled):active,
.pdf-tools .btn:not(:disabled):active {
    transform: translateY(1px) scale(0.99);
}

/* Dropzone Drag-over Active State */
.pdf-dropzone.is-drag-over {
    border-color: #3b82f6 !important;
    background: rgba(59, 130, 246, 0.08) !important;
    transform: scale(1.01) !important;
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.2) !important;
}

/* Toast Notification Floating System */
.pdf-toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.pdf-toast {
    pointer-events: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.35rem;
    background: rgba(15, 23, 42, 0.92);
    color: #f8fafc;
    border: 1px solid rgba(59, 130, 246, 0.35);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), 0 0 15px rgba(59, 130, 246, 0.15);
    backdrop-filter: blur(12px);
    font-size: 0.9rem;
    font-weight: 500;
    max-width: 400px;
    animation: toast-slide-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    transition: all 0.25s ease;
}

[data-theme="light"] .pdf-toast {
    background: rgba(255, 255, 255, 0.96);
    color: #0f172a;
    border: 1px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15), 0 2px 10px rgba(0, 0, 0, 0.08);
}

.pdf-toast.toast-success {
    border-color: rgba(16, 185, 129, 0.45);
}

.pdf-toast.toast-success .toast-icon {
    color: #10b981;
    font-weight: bold;
}

.pdf-toast.toast-info {
    border-color: rgba(59, 130, 246, 0.45);
}

.pdf-toast.toast-info .toast-icon {
    color: #3b82f6;
}

.pdf-toast.is-hiding {
    opacity: 0;
    transform: translateY(12px) scale(0.95);
}

@keyframes toast-slide-in {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}