/**
 * SEO Suite - High-Contrast, Crystal Clear PDF Compressor Stylesheet
 * Responsive, Mobile-First, Accessible, Crisp Borders & High Visibility
 * Standardized in exact PX units: 16px normal para, proportional headings
 */

:root {
    --pdf-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --pdf-bg: #f8fafc;
    --pdf-card-bg: #ffffff;
    --pdf-card-border: #cbd5e1;
    --pdf-box-border: #94a3b8;
    --pdf-card-border-focus: #dc2626;
    --pdf-text-main: #0f172a;
    --pdf-text-muted: #1e293b;
    --pdf-text-sub: #334155;
    --pdf-primary: #dc2626;
    --pdf-primary-hover: #b91c1c;
    --pdf-primary-light: #fff5f5;
    --pdf-accent: #4f46e5;
    --pdf-emerald: #059669;
    --pdf-emerald-light: #ecfdf5;
    --pdf-amber: #d97706;
    --pdf-amber-light: #fffbeb;
    --pdf-blue: #1d4ed8;
    --pdf-blue-light: #eff6ff;
    --pdf-danger: #dc2626;
    --pdf-input-bg: #f8fafc;
    --pdf-input-border: #94a3b8;
    --pdf-pill-bg: #f1f5f9;
    --pdf-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --pdf-shadow-md: 0 4px 10px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
    --pdf-shadow-lg: 0 12px 28px -4px rgba(0, 0, 0, 0.12), 0 4px 8px -2px rgba(0, 0, 0, 0.06);
    --pdf-radius-lg: 16px;
    --pdf-radius-md: 12px;
    --pdf-radius-sm: 8px;
    --pdf-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Overrides - High Contrast */
[data-pdf-theme="dark"], body.dark-mode-active {
    --pdf-bg: #0b1120;
    --pdf-card-bg: #1e293b;
    --pdf-card-border: #475569;
    --pdf-box-border: #64748b;
    --pdf-card-border-focus: #f87171;
    --pdf-text-main: #ffffff;
    --pdf-text-muted: #f1f5f9;
    --pdf-text-sub: #e2e8f0;
    --pdf-primary: #ef4444;
    --pdf-primary-hover: #dc2626;
    --pdf-primary-light: rgba(239, 68, 68, 0.18);
    --pdf-input-bg: #0f172a;
    --pdf-input-border: #64748b;
    --pdf-pill-bg: #334155;
    --pdf-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --pdf-shadow-md: 0 4px 12px -1px rgba(0, 0, 0, 0.5);
    --pdf-shadow-lg: 0 12px 30px -4px rgba(0, 0, 0, 0.6);
}

/* Base Wrapper & General Paragraphs */
.pdf-app-wrapper {
    font-family: var(--pdf-font);
    color: var(--pdf-text-main);
    max-width: 1200px;
    margin: 0 auto 40px auto;
    padding: 0 12px;
    box-sizing: border-box;
    font-size: 16px;
    line-height: 1.6;
}

.pdf-app-wrapper p {
    font-size: 15px;
    line-height: 1.65;
    color: var(--pdf-text-muted);
}

/* Header & Hero Section */
.pdf-hero {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.08) 0%, rgba(79, 70, 229, 0.08) 100%);
    border: 2px solid var(--pdf-card-border);
    border-radius: var(--pdf-radius-lg);
    padding: 34px 26px;
    margin-bottom: 26px;
    text-align: center;
    position: relative;
    box-shadow: var(--pdf-shadow-sm);
}

.pdf-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fee2e2;
    color: #991b1b;
    border: 1.5px solid #f87171;
    padding: 7px 18px;
    border-radius: 9999px;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

[data-pdf-theme="dark"] .pdf-hero-badge, body.dark-mode-active .pdf-hero-badge {
    background: rgba(239, 68, 68, 0.25);
    color: #fca5a5;
    border-color: #ef4444;
}

.pdf-hero-title {
    font-size: 34px;
    font-weight: 900;
    line-height: 1.25;
    color: var(--pdf-text-main);
    margin: 0 0 14px 0;
}

.pdf-hero-title span {
    background: linear-gradient(135deg, #dc2626 0%, #4338ca 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-pdf-theme="dark"] .pdf-hero-title span, body.dark-mode-active .pdf-hero-title span {
    background: linear-gradient(135deg, #f87171 0%, #818cf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pdf-hero-desc {
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-text-muted);
    max-width: 820px;
    margin: 0 auto 22px auto;
    line-height: 1.65;
}

.pdf-hero-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 15px;
}

.pdf-hero-feat-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--pdf-card-bg);
    border: 1.5px solid var(--pdf-box-border);
    padding: 8px 16px;
    border-radius: 9999px;
    font-weight: 700;
    color: var(--pdf-text-main);
    font-size: 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.pdf-hero-feat-item i {
    color: var(--pdf-emerald);
    font-size: 16px;
}

/* Theme Toggle Button */
.pdf-theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-box-border);
    color: var(--pdf-text-main);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    transition: var(--pdf-transition);
    box-shadow: var(--pdf-shadow-sm);
}

.pdf-theme-toggle:hover {
    color: var(--pdf-primary);
    border-color: var(--pdf-primary);
    transform: rotate(15deg);
}

/* Main Card Component */
.pdf-card {
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-card-border);
    border-radius: var(--pdf-radius-lg);
    box-shadow: var(--pdf-shadow-md);
    overflow: hidden;
    margin-bottom: 28px;
    transition: var(--pdf-transition);
}

.pdf-card-header {
    padding: 22px 26px;
    background: var(--pdf-input-bg);
    border-bottom: 2px solid var(--pdf-card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.pdf-card-title {
    font-size: 22px;
    font-weight: 800;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--pdf-text-main);
}

.pdf-card-title i {
    color: var(--pdf-primary);
    font-size: 24px;
}

.pdf-card-body {
    padding: 28px 26px;
}

/* Section Step Labels */
.pdf-section-label {
    display: block;
    font-weight: 800;
    margin-bottom: 14px;
    font-size: 18px;
    color: var(--pdf-text-main);
    letter-spacing: -0.01em;
}

/* Compression Modes Panel */
.pdf-modes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 22px;
}

.pdf-mode-card {
    border: 2px solid var(--pdf-box-border);
    border-radius: var(--pdf-radius-md);
    padding: 22px 20px;
    cursor: pointer;
    background: var(--pdf-card-bg);
    position: relative;
    transition: var(--pdf-transition);
    user-select: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.pdf-mode-card:hover {
    border-color: #64748b;
    background: var(--pdf-input-bg);
    transform: translateY(-3px);
    box-shadow: var(--pdf-shadow-md);
}

.pdf-mode-card.active {
    border: 3px solid var(--pdf-primary);
    background: var(--pdf-primary-light);
    box-shadow: 0 4px 16px rgba(220, 38, 38, 0.2);
}

.pdf-mode-card.active .pdf-mode-name {
    color: #991b1b;
    font-weight: 800;
}

.pdf-mode-card.active .pdf-mode-desc {
    color: #0f172a;
    font-weight: 600;
}

[data-pdf-theme="dark"] .pdf-mode-card.active .pdf-mode-name, body.dark-mode-active .pdf-mode-card.active .pdf-mode-name {
    color: #fca5a5;
}

[data-pdf-theme="dark"] .pdf-mode-card.active .pdf-mode-desc, body.dark-mode-active .pdf-mode-card.active .pdf-mode-desc {
    color: #ffffff;
}

[data-pdf-theme="dark"] .pdf-mode-card.active, body.dark-mode-active .pdf-mode-card.active {
    background: rgba(239, 68, 68, 0.16);
    border-color: #ef4444;
}

.pdf-mode-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    padding-right: 28px;
}

.pdf-mode-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    background: var(--pdf-pill-bg);
    border: 1.5px solid var(--pdf-card-border);
    color: var(--pdf-primary);
    box-shadow: var(--pdf-shadow-sm);
}

/* Mode Badges */
.pdf-mode-badge {
    font-size: 13px;
    font-weight: 800;
    padding: 5px 10px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    display: inline-block;
}

.badge-low {
    background: #dbeafe;
    color: #1e40af;
    border: 1.5px solid #60a5fa;
}

.badge-rec {
    background: #d1fae5;
    color: #065f46;
    border: 1.5px solid #34d399;
}

.badge-high {
    background: #fef3c7;
    color: #92400e;
    border: 1.5px solid #f59e0b;
}

[data-pdf-theme="dark"] .badge-low, body.dark-mode-active .badge-low {
    background: #1e3a8a;
    color: #bfdbfe;
    border-color: #3b82f6;
}

[data-pdf-theme="dark"] .badge-rec, body.dark-mode-active .badge-rec {
    background: #064e3b;
    color: #a7f3d0;
    border-color: #10b981;
}

[data-pdf-theme="dark"] .badge-high, body.dark-mode-active .badge-high {
    background: #78350f;
    color: #fde68a;
    border-color: #d97706;
}

.pdf-mode-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--pdf-text-main);
    margin: 0 0 8px 0;
}

.pdf-mode-desc {
    font-size: 16px;
    font-weight: 500;
    color: var(--pdf-text-muted);
    line-height: 1.6;
    margin: 0;
}

/* Radio / Checkmark Indicator */
.pdf-mode-check {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--pdf-box-border);
    background: var(--pdf-card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--pdf-transition);
}

.pdf-mode-check i {
    opacity: 0;
    transform: scale(0.4);
    transition: all 0.2s ease;
    color: #ffffff;
    font-size: 12px;
}

.pdf-mode-card.active .pdf-mode-check {
    background: var(--pdf-primary);
    border-color: var(--pdf-primary);
}

.pdf-mode-card.active .pdf-mode-check i {
    opacity: 1;
    transform: scale(1);
}

/* Custom Settings Accordion */
.pdf-custom-toggle-btn {
    background: none;
    border: none;
    padding: 8px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-accent);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--pdf-transition);
}

.pdf-custom-toggle-btn:hover {
    color: var(--pdf-primary);
    text-decoration: underline;
}

.pdf-custom-panel {
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-card-border);
    border-radius: var(--pdf-radius-md);
    padding: 20px 24px;
    margin-top: 14px;
    display: none;
    box-shadow: var(--pdf-shadow-sm);
    animation: pdfFadeIn 0.25s ease-out;
}

.pdf-custom-panel.open {
    display: block;
}

.pdf-slider-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.pdf-slider-item label {
    display: flex;
    justify-content: space-between;
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-text-main);
    margin-bottom: 10px;
}

.pdf-slider-item input[type="range"] {
    width: 100%;
    height: 8px;
    accent-color: var(--pdf-primary);
    cursor: pointer;
}

/* Upload Dropzone - High Contrast & Clearly Defined */
.pdf-dropzone {
    border: 3px dashed var(--pdf-box-border);
    border-radius: var(--pdf-radius-lg);
    background: var(--pdf-input-bg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    position: relative;
    transition: var(--pdf-transition);
    overflow: hidden;
}

.pdf-dropzone:hover, .pdf-dropzone.dragover {
    border-color: var(--pdf-primary);
    background: var(--pdf-primary-light);
    transform: scale(1.005);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.15);
}

.pdf-dropzone-icon {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-card-border);
    color: var(--pdf-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    margin: 0 auto 18px auto;
    box-shadow: var(--pdf-shadow-md);
    transition: var(--pdf-transition);
}

.pdf-dropzone:hover .pdf-dropzone-icon {
    transform: translateY(-4px);
    border-color: var(--pdf-primary);
}

.pdf-dropzone-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--pdf-text-main);
    margin: 0 0 10px 0;
}

.pdf-dropzone-subtitle {
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-text-muted);
    margin: 0 0 22px 0;
}

.pdf-btn-browse {
    background: var(--pdf-primary);
    color: #ffffff;
    border: none;
    padding: 14px 34px;
    font-size: 16px;
    font-weight: 800;
    border-radius: var(--pdf-radius-md);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
    transition: var(--pdf-transition);
}

.pdf-btn-browse:hover {
    background: var(--pdf-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(220, 38, 38, 0.45);
}

.pdf-dropzone-limits {
    margin-top: 22px;
    font-size: 15px;
    font-weight: 700;
    color: var(--pdf-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
}

.pdf-sample-trigger {
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-box-border);
    color: var(--pdf-text-main);
    font-size: 14px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 9999px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--pdf-transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.pdf-sample-trigger:hover {
    border-color: var(--pdf-primary);
    color: var(--pdf-primary);
    transform: translateY(-1px);
}

/* File Queue Section */
.pdf-queue-section {
    margin-top: 28px;
    display: none;
}

.pdf-queue-section.has-files {
    display: block;
}

.pdf-queue-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--pdf-card-border);
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 12px;
}

.pdf-queue-stats {
    font-size: 18px;
    font-weight: 700;
    color: var(--pdf-text-main);
}

.pdf-queue-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pdf-btn-secondary {
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-box-border);
    color: var(--pdf-text-main);
    padding: 9px 18px;
    font-size: 15px;
    font-weight: 700;
    border-radius: var(--pdf-radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--pdf-transition);
}

.pdf-btn-secondary:hover {
    background: #e2e8f0;
    border-color: #64748b;
}

[data-pdf-theme="dark"] .pdf-btn-secondary:hover, body.dark-mode-active .pdf-btn-secondary:hover {
    background: #334155;
}

.pdf-btn-primary {
    background: var(--pdf-primary);
    border: none;
    color: #ffffff;
    padding: 10px 22px;
    font-size: 16px;
    font-weight: 800;
    border-radius: var(--pdf-radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
    transition: var(--pdf-transition);
}

.pdf-btn-primary:hover:not(:disabled) {
    background: var(--pdf-primary-hover);
    transform: translateY(-1px);
}

.pdf-btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* File Item Card - Distinct & Clear */
.pdf-file-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.pdf-file-item {
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-card-border);
    border-radius: var(--pdf-radius-md);
    padding: 18px 22px;
    transition: var(--pdf-transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.pdf-file-item:hover {
    border-color: var(--pdf-box-border);
    box-shadow: var(--pdf-shadow-md);
}

.pdf-file-item.status-done {
    border: 2px solid #34d399;
    background: #f0fdf4;
}

[data-pdf-theme="dark"] .pdf-file-item.status-done, body.dark-mode-active .pdf-file-item.status-done {
    background: rgba(16, 185, 129, 0.12);
    border-color: #10b981;
}

.pdf-file-item.status-optimal {
    border: 2px solid #60a5fa;
    background: #eff6ff;
}

[data-pdf-theme="dark"] .pdf-file-item.status-optimal, body.dark-mode-active .pdf-file-item.status-optimal {
    background: rgba(37, 99, 235, 0.12);
    border-color: #3b82f6;
}

.pdf-file-item.status-error {
    border: 2px solid #f87171;
    background: #fef2f2;
}

[data-pdf-theme="dark"] .pdf-file-item.status-error, body.dark-mode-active .pdf-file-item.status-error {
    background: rgba(239, 68, 68, 0.12);
    border-color: #ef4444;
}

.pdf-file-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.pdf-file-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 260px;
    flex: 1;
}

.pdf-file-icon {
    width: 48px;
    height: 48px;
    background: #fee2e2;
    color: var(--pdf-primary);
    border-radius: 12px;
    border: 1.5px solid #fca5a5;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.pdf-file-info {
    overflow: hidden;
}

.pdf-file-name {
    font-size: 16px;
    font-weight: 800;
    color: var(--pdf-text-main);
    margin: 0 0 6px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 340px;
}

.pdf-file-specs {
    font-size: 14px;
    font-weight: 700;
    color: var(--pdf-text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pdf-file-specs .spec-badge {
    background: var(--pdf-input-bg);
    border: 1.5px solid var(--pdf-box-border);
    color: var(--pdf-text-main);
    padding: 3px 10px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 14px;
}

/* File Compression Stats Chips - High Contrast */
.pdf-file-results {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.stat-pill {
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.stat-pill-saved {
    background: #d1fae5;
    color: #064e3b;
    border: 2px solid #10b981;
}

.stat-pill-optimal {
    background: #dbeafe;
    color: #1e3a8a;
    border: 2px solid #3b82f6;
}

.stat-pill-size {
    background: var(--pdf-input-bg);
    border: 2px solid var(--pdf-box-border);
    color: var(--pdf-text-main);
}

.pdf-file-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.pdf-btn-download {
    background: var(--pdf-emerald);
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 800;
    border-radius: var(--pdf-radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: var(--pdf-transition);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.pdf-btn-download:hover {
    background: #047857;
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(5, 150, 105, 0.4);
}

.pdf-btn-icon-action {
    background: var(--pdf-input-bg);
    border: 2px solid var(--pdf-box-border);
    color: var(--pdf-text-main);
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--pdf-transition);
    font-size: 16px;
}

.pdf-btn-icon-action:hover {
    border-color: var(--pdf-danger);
    color: var(--pdf-danger);
    background: var(--pdf-primary-light);
}

/* Progress bar inside file item */
.pdf-file-progress-bar {
    height: 6px;
    background: var(--pdf-card-border);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 14px;
    display: none;
}

.pdf-file-progress-bar.active {
    display: block;
}

.pdf-file-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #dc2626 0%, #059669 100%);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.pdf-file-error-msg {
    color: #b91c1c;
    font-size: 14px;
    font-weight: 700;
    margin-top: 10px;
    display: none;
}

.pdf-file-item.status-error .pdf-file-error-msg {
    display: block;
}

/* Global Batch Summary Card */
.pdf-batch-summary {
    background: #ecfdf5;
    border: 2.5px solid #10b981;
    border-radius: var(--pdf-radius-md);
    padding: 20px 26px;
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 18px;
    box-shadow: var(--pdf-shadow-sm);
    animation: pdfFadeIn 0.3s ease-in;
}

[data-pdf-theme="dark"] .pdf-batch-summary, body.dark-mode-active .pdf-batch-summary {
    background: rgba(16, 185, 129, 0.15);
}

.pdf-batch-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.pdf-batch-badge {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--pdf-emerald);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 10px rgba(5, 150, 105, 0.3);
}

.pdf-batch-title {
    font-size: 18px;
    font-weight: 800;
    color: #064e3b;
    margin: 0 0 4px 0;
}

[data-pdf-theme="dark"] .pdf-batch-title, body.dark-mode-active .pdf-batch-title {
    color: #a7f3d0;
}

.pdf-batch-subtitle {
    font-size: 16px;
    font-weight: 700;
    color: #065f46;
    margin: 0;
}

[data-pdf-theme="dark"] .pdf-batch-subtitle, body.dark-mode-active .pdf-batch-subtitle {
    color: #d1fae5;
}

.pdf-btn-download-all {
    background: #047857;
    color: #ffffff;
    border: none;
    padding: 12px 26px;
    font-size: 16px;
    font-weight: 800;
    border-radius: var(--pdf-radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 14px rgba(4, 120, 87, 0.35);
    transition: var(--pdf-transition);
}

.pdf-btn-download-all:hover {
    background: #065f46;
    transform: translateY(-2px);
}

/* Quick Use Cases Section */
.pdf-presets-section {
    margin-top: 36px;
}

.pdf-presets-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.pdf-preset-card {
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-box-border);
    border-radius: var(--pdf-radius-md);
    padding: 18px;
    cursor: pointer;
    transition: var(--pdf-transition);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.pdf-preset-card:hover {
    border-color: var(--pdf-primary);
    transform: translateY(-3px);
    box-shadow: var(--pdf-shadow-md);
}

.pdf-preset-icon {
    font-size: 24px;
    color: var(--pdf-primary);
    margin-bottom: 10px;
}

.pdf-preset-name {
    font-size: 18px;
    font-weight: 800;
    color: var(--pdf-text-main);
    margin: 0 0 6px 0;
}

.pdf-preset-desc {
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-text-muted);
    margin: 0;
    line-height: 1.55;
}

/* Educational & Comparison Guide */
.pdf-guide-section {
    background: var(--pdf-card-bg);
    border: 2px solid var(--pdf-card-border);
    border-radius: var(--pdf-radius-lg);
    padding: 38px 32px;
    margin-top: 38px;
    box-shadow: var(--pdf-shadow-sm);
}

.pdf-guide-title {
    font-size: 28px;
    font-weight: 900;
    color: var(--pdf-text-main);
    margin: 0 0 16px 0;
    text-align: center;
}

.pdf-guide-subtitle {
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-text-muted);
    max-width: 820px;
    margin: 0 auto 34px auto;
    text-align: center;
    line-height: 1.65;
}

/* Step-by-Step Flow */
.pdf-steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-bottom: 44px;
}

.pdf-step-card {
    background: var(--pdf-input-bg);
    border: 2px solid var(--pdf-box-border);
    border-radius: var(--pdf-radius-md);
    padding: 26px 22px;
    text-align: center;
    position: relative;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.pdf-step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--pdf-primary);
    color: #ffffff;
    font-weight: 900;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px auto;
    box-shadow: 0 4px 10px rgba(220, 38, 38, 0.3);
}

.pdf-step-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--pdf-text-main);
    margin: 0 0 10px 0;
}

.pdf-step-desc {
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-text-muted);
    line-height: 1.6;
    margin: 0;
}

/* Comparison Table - Clear & Crisp */
.pdf-table-responsive {
    overflow-x: auto;
    margin-bottom: 38px;
    border-radius: var(--pdf-radius-md);
    border: 2px solid var(--pdf-box-border);
}

.pdf-comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 16px;
}

.pdf-comparison-table th {
    background: var(--pdf-pill-bg);
    color: var(--pdf-text-main);
    padding: 16px 20px;
    font-weight: 800;
    font-size: 16px;
    border-bottom: 2px solid var(--pdf-box-border);
}

.pdf-comparison-table td {
    padding: 16px 20px;
    border-bottom: 1.5px solid var(--pdf-card-border);
    color: var(--pdf-text-main);
    font-weight: 600;
    font-size: 16px;
    line-height: 1.55;
}

.pdf-comparison-table tr:last-child td {
    border-bottom: none;
}

/* FAQ Accordion */
.pdf-faq-section {
    margin-top: 38px;
}

.pdf-faq-item {
    border: 2px solid var(--pdf-box-border);
    border-radius: var(--pdf-radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    background: var(--pdf-card-bg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.pdf-faq-question {
    padding: 18px 22px;
    font-size: 18px;
    font-weight: 800;
    color: var(--pdf-text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
    transition: var(--pdf-transition);
}

.pdf-faq-question:hover {
    color: var(--pdf-primary);
}

.pdf-faq-icon {
    font-size: 16px;
    transition: transform 0.2s ease;
}

.pdf-faq-item.open .pdf-faq-icon {
    transform: rotate(180deg);
}

.pdf-faq-answer {
    padding: 0 22px 20px 22px;
    font-size: 16px;
    font-weight: 600;
    color: var(--pdf-text-muted);
    line-height: 1.7;
    display: none;
    border-top: 1px dashed var(--pdf-card-border);
    padding-top: 14px;
}

.pdf-faq-item.open .pdf-faq-answer {
    display: block;
}

/* Toast Notification */
.pdf-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #0f172a;
    color: #ffffff;
    padding: 14px 22px;
    border-radius: var(--pdf-radius-md);
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
    z-index: 99999;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--pdf-transition);
}

.pdf-toast.show {
    transform: translateY(0);
    opacity: 1;
}

.pdf-toast.toast-error {
    background: #dc2626;
}

.pdf-toast.toast-success {
    background: #059669;
}

/* Animations */
@keyframes pdfFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .pdf-modes-grid {
        grid-template-columns: 1fr;
    }
    
    .pdf-presets-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pdf-steps-grid {
        grid-template-columns: 1fr;
    }

    .pdf-hero-title {
        font-size: 28px;
    }
}

@media (max-width: 640px) {
    .pdf-app-wrapper {
        padding: 0 8px;
    }

    .pdf-hero {
        padding: 24px 16px;
    }

    .pdf-hero-title {
        font-size: 24px;
    }

    .pdf-card-body {
        padding: 18px 14px;
    }

    .pdf-dropzone {
        padding: 34px 14px;
    }

    .pdf-dropzone-icon {
        width: 60px;
        height: 60px;
        font-size: 30px;
    }

    .pdf-file-main {
        flex-direction: column;
        align-items: flex-start;
    }

    .pdf-file-results {
        width: 100%;
        justify-content: flex-start;
    }

    .pdf-file-actions {
        width: 100%;
        justify-content: space-between;
        margin-top: 10px;
    }

    .pdf-btn-download {
        flex: 1;
        justify-content: center;
    }

    .pdf-presets-grid {
        grid-template-columns: 1fr;
    }

    .pdf-slider-group {
        grid-template-columns: 1fr;
    }

    .pdf-batch-summary {
        flex-direction: column;
        align-items: stretch;
    }

    .pdf-btn-download-all {
        justify-content: center;
    }
}