/* ==========================================================================
   CarePDF - Tool Base Styles
   Styles for individual PDF tool pages
   ========================================================================== */

/* ==========================================================================
   1. Tool Page Container
   ========================================================================== */

.tool-page {
    padding-top: 72px;
    /* Navbar height */
    min-height: 100vh;
}

/* ==========================================================================
   2. Tool Header
   ========================================================================== */

.tool-header {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tool-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 80%, rgba(239, 68, 68, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.tool-header-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.tool-category-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--primary-300);
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tool-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    line-height: var(--leading-tight);
}

.tool-description {
    font-size: var(--text-lg);
    color: var(--gray-400);
    max-width: 600px;
    margin: 0 auto;
}

.tool-trust-badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    font-size: var(--text-sm);
    color: var(--gray-400);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.trust-item svg {
    color: var(--accent);
}

.trust-divider {
    color: var(--gray-600);
}

/* ==========================================================================
   3. Tool Layout (Main + Sidebar)
   ========================================================================== */

.tool-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl) 0 var(--spacing-4xl);
    align-items: start;
}

.tool-main {
    min-width: 0;
}

/* ==========================================================================
   4. Upload Section - Premium Redesigned Drop Zone
   ========================================================================== */

.upload-section {
    margin-bottom: var(--spacing-2xl);
}

.upload-zone {
    position: relative;
    border: 2px dashed #e5e7eb;
    border-radius: 20px;
    background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
    padding: 48px 32px;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Subtle background pattern */
.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(239, 68, 68, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

/* Animated border gradient effect */
.upload-zone::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg, 
        #ef4444, #f97316, #eab308, #22c55e, 
        #06b6d4, #3b82f6, #8b5cf6, #ef4444);
    background-size: 400% 400%;
    border-radius: 22px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
    animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.upload-zone:hover {
    border-color: #d1d5db;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.upload-zone:hover::before {
    opacity: 1;
}

/* Dragover state - Beautiful drop effect */
.upload-zone.dragover {
    border-color: transparent;
    background: linear-gradient(180deg, #fef2f2 0%, #fff5f5 100%);
    transform: scale(1.01);
    box-shadow: 
        0 0 0 4px rgba(239, 68, 68, 0.1),
        0 20px 50px rgba(239, 68, 68, 0.15);
}

.upload-zone.dragover::before {
    opacity: 1;
}

.upload-zone.dragover::after {
    opacity: 1;
}

/* State when files are present */
.upload-zone.has-files {
    padding: 20px;
    min-height: auto;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    cursor: default;
}

.upload-zone.has-files:hover {
    transform: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.upload-zone.has-files::before,
.upload-zone.has-files::after {
    display: none;
}

/* Global drag active state */
.upload-zone.global-drag-active {
    border-color: var(--primary);
    background: linear-gradient(180deg, #fef2f2 0%, #ffffff 100%);
    animation: pulseGlow 2s ease infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.3);
    }
    50% {
        box-shadow: 0 0 0 12px rgba(239, 68, 68, 0);
    }
}

.upload-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    position: relative;
    z-index: 1;
}

/* Upload icon - Modern circular design */
.upload-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(145deg, #fef2f2 0%, #fee2e2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.12);
    border: 2px solid rgba(239, 68, 68, 0.08);
    position: relative;
}

/* Animated ring around icon */
.upload-icon::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px dashed rgba(239, 68, 68, 0.2);
    opacity: 0;
    transition: all 0.4s ease;
}

.upload-zone:hover .upload-icon {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(239, 68, 68, 0.18);
}

.upload-zone:hover .upload-icon::before {
    opacity: 1;
    animation: spinSlow 12s linear infinite;
}

@keyframes spinSlow {
    to { transform: rotate(360deg); }
}

.upload-zone.dragover .upload-icon {
    transform: translateY(-8px) scale(1.1);
    background: linear-gradient(145deg, var(--primary) 0%, #dc2626 100%);
    box-shadow: 0 20px 48px rgba(239, 68, 68, 0.35);
    animation: bounceIcon 0.6s ease infinite;
}

.upload-zone.dragover .upload-icon::before {
    opacity: 1;
    border-color: var(--primary);
    animation: spinSlow 4s linear infinite;
}

.upload-zone.dragover .upload-icon svg {
    color: #ffffff;
}

@keyframes bounceIcon {
    0%, 100% { transform: translateY(-8px) scale(1.1); }
    50% { transform: translateY(-14px) scale(1.1); }
}

.upload-icon svg {
    width: 36px;
    height: 36px;
    color: var(--primary);
    transition: all 0.4s ease;
}

/* Upload zone typography */
.upload-zone h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
    margin: 0;
    transition: all 0.3s ease;
}

.upload-zone.dragover h3 {
    color: var(--primary);
    transform: scale(1.02);
}

.upload-zone p {
    color: #6b7280;
    margin: 0;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.upload-zone.dragover p {
    color: #374151;
}

/* Premium button styling in upload zone */
.upload-zone .btn {
    margin-top: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, #dc2626 100%);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.upload-zone .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.4);
}

.upload-zone .btn:active {
    transform: translateY(0);
}

/* File format badges */
.upload-formats {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 20px;
}

.upload-format {
    padding: 6px 14px;
    font-size: 11px;
    font-weight: 700;
    color: #6b7280;
    background: linear-gradient(145deg, #ffffff 0%, #f3f4f6 100%);
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.upload-zone:hover .upload-format {
    border-color: #d1d5db;
}

.upload-zone.dragover .upload-format {
    background: linear-gradient(145deg, #fef2f2 0%, #fee2e2 100%);
    color: var(--primary);
    border-color: rgba(239, 68, 68, 0.2);
    transform: translateY(-1px);
}

/* Global drag styling */
body.is-dragging {
    cursor: grabbing !important;
    user-select: none;
}

body.is-dragging * {
    cursor: grabbing !important;
}

/* ==========================================================================
   5. File List - Primary styles in file-cards.css
   ========================================================================== */

.file-list {
    margin-top: 0;
}

.file-list.hidden {
    display: none;
}

/* ==========================================================================
   6. Tool Options
   ========================================================================== */

.tool-options-wrapper {
    margin-bottom: var(--spacing-xl);
}

.options-card {
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.options-header {
    margin-bottom: var(--spacing-lg);
}

.options-header h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.options-description {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin: 0;
}

.merge-options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.option-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--gray-700);
}

.option-icon {
    width: 32px;
    height: 32px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
}

/* ==========================================================================
   7. Process Action
   ========================================================================== */

.process-action-wrapper {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.process-btn {
    min-width: 200px;
}

.process-btn svg {
    width: 22px;
    height: 22px;
}

.process-hint {
    font-size: var(--text-sm);
    color: var(--gray-400);
    margin-top: var(--spacing-sm);
    margin-bottom: 0;
}

/* ==========================================================================
   8. How It Works Section
   ========================================================================== */

.how-it-works-section {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--gray-200);
}

.how-it-works-section h2 {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.step-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.step-card:hover {
    background: #ffffff;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.step-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.step-icon svg {
    width: 28px;
    height: 28px;
    stroke-width: 2;
}

.step-icon-primary {
    background: var(--primary-100);
    color: var(--primary);
}

.step-icon-purple {
    background: var(--secondary-100);
    color: var(--secondary);
}

.step-icon-green {
    background: var(--accent-100);
    color: var(--accent);
}

.step-card h3 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.step-card p {
    font-size: var(--text-sm);
    color: var(--gray-600);
    margin: 0;
}

/* ==========================================================================
   9. Sidebar
   ========================================================================== */

.tool-sidebar {
    position: sticky;
    top: 88px;
}

.sidebar-sticky {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.sidebar-widget {
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
}

.sidebar-widget h3 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Ad Widget */
.ad-widget {
    text-align: center;
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.ad-label {
    font-size: var(--text-xs);
    color: var(--gray-400);
    margin-bottom: var(--spacing-sm);
    display: block;
}

/* Posts Widget */
.widget-posts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.widget-post-link {
    display: flex;
    gap: var(--spacing-sm);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.widget-post-link:hover {
    opacity: 0.8;
}

.widget-post-image {
    width: 60px;
    height: 45px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

.widget-post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.widget-post-content {
    flex: 1;
    min-width: 0;
}

.widget-post-date {
    font-size: var(--text-xs);
    color: var(--gray-400);
}

.widget-post-content h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--gray-800);
    margin: 0;
    line-height: var(--leading-snug);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Tools Widget */
.widget-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.widget-links li a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 0.75rem;
    font-size: var(--text-sm);
    color: var(--gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.widget-links li a:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.w-icon {
    width: 28px;
    height: 28px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.w-icon svg {
    width: 16px;
    height: 16px;
    color: var(--gray-500);
}

.widget-links li a:hover .w-icon {
    background: var(--primary-100);
}

.widget-links li a:hover .w-icon svg {
    color: var(--primary);
}

/* ==========================================================================
   10. Merge Tip Box
   ========================================================================== */

.merge-tip-box {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--info-light);
    border: 1px solid #93c5fd;
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-lg);
}

.tip-icon {
    width: 40px;
    height: 40px;
    background: #ffffff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--info);
}

.merge-tip-box p {
    font-size: var(--text-sm);
    color: #1e40af;
    margin: 0;
}

.merge-tip-box strong {
    color: #1e3a8a;
}

/* ==========================================================================
   11. Responsive Styles - Enhanced Mobile Experience
   ========================================================================== */

@media (max-width: 991px) {
    .tool-page {
        padding-top: 64px;
    }

    .tool-layout {
        grid-template-columns: 1fr;
    }

    .tool-sidebar {
        position: static;
        order: 2;
    }

    .sidebar-sticky {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .sidebar-widget {
        flex: 1;
        min-width: 280px;
    }

    .upload-zone {
        padding: var(--spacing-2xl) var(--spacing-xl);
    }

    .upload-icon {
        width: 80px;
        height: 80px;
        border-radius: 22px;
    }

    .upload-icon svg {
        width: 38px;
        height: 38px;
    }
}

@media (max-width: 767px) {
    .tool-header {
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }

    .tool-title {
        font-size: var(--text-3xl);
    }

    .tool-description {
        font-size: var(--text-base);
        padding-inline: var(--spacing-sm);
    }

    .tool-trust-badges {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .upload-zone {
        padding: var(--spacing-xl) var(--spacing-lg);
        border-radius: 20px;
    }

    .upload-zone h3 {
        font-size: var(--text-xl);
    }

    .upload-zone p {
        font-size: var(--text-sm);
    }

    .upload-icon {
        width: 72px;
        height: 72px;
        border-radius: 20px;
    }

    .upload-icon::before {
        inset: -6px;
        border-radius: 28px;
    }

    .upload-icon svg {
        width: 34px;
        height: 34px;
    }

    .upload-zone .btn {
        padding: 0.875rem 1.5rem;
        font-size: var(--text-sm);
        width: 100%;
        max-width: 280px;
    }

    .upload-formats {
        gap: 8px;
    }

    .upload-format {
        padding: 6px 12px;
        font-size: 10px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .step-card {
        padding: var(--spacing-lg);
    }

    .merge-options-grid {
        grid-template-columns: 1fr;
    }

    .sidebar-sticky {
        flex-direction: column;
    }

    .sidebar-widget {
        min-width: 100%;
    }

    .process-action-wrapper {
        margin-top: var(--spacing-lg);
    }

    .process-btn {
        width: 100%;
        max-width: 100%;
        padding: 1rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .tool-header {
        padding: var(--spacing-xl) 0;
    }

    .tool-title {
        font-size: var(--text-2xl);
    }

    .tool-category-badge {
        font-size: 10px;
        padding: 0.25rem 0.75rem;
    }

    .upload-zone {
        padding: var(--spacing-lg) var(--spacing-md);
        border-radius: 16px;
        margin-inline: calc(var(--spacing-sm) * -1);
    }

    .upload-zone h3 {
        font-size: var(--text-lg);
    }

    .upload-zone-content {
        gap: var(--spacing-md);
    }

    .upload-icon {
        width: 64px;
        height: 64px;
        border-radius: 18px;
    }

    .upload-icon::before {
        display: none;
    }

    .upload-icon svg {
        width: 30px;
        height: 30px;
    }

    .upload-zone .btn {
        padding: 0.875rem 1.25rem;
        border-radius: 12px;
    }

    .upload-formats {
        gap: 6px;
        margin-top: var(--spacing-md);
    }

    .upload-format {
        padding: 5px 10px;
        font-size: 9px;
        letter-spacing: 0.03em;
    }

    .file-limit-text {
        font-size: 12px;
    }

    .step-icon {
        width: 48px;
        height: 48px;
    }

    .step-icon svg {
        width: 24px;
        height: 24px;
    }

    .step-card h3 {
        font-size: var(--text-sm);
    }

    .step-card p {
        font-size: var(--text-xs);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .upload-zone:hover {
        transform: none;
        box-shadow:
            0 4px 24px rgba(0, 0, 0, 0.04),
            inset 0 1px 1px rgba(255, 255, 255, 0.8);
    }

    .upload-zone:hover .upload-icon {
        transform: none;
    }

    .upload-zone:hover::before,
    .upload-zone:hover::after {
        opacity: 0;
    }

    .upload-zone:active {
        transform: scale(0.99);
        background: linear-gradient(145deg, rgba(254, 242, 242, 0.95) 0%, rgba(254, 226, 226, 0.9) 100%);
    }

    .upload-zone .btn {
        min-height: 48px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    .upload-zone,
    .upload-zone::before,
    .upload-zone::after,
    .upload-icon,
    .upload-icon::before,
    .upload-format,
    .upload-zone .btn {
        animation: none !important;
        transition: opacity 0.15s ease, background 0.15s ease !important;
    }
}