/* ============================================
   AI Humanizer Tool - Consistent Styling
   Aligned with Main Website Design System
   ============================================ */

/* ============================================
   0. SEO ENHANCEMENT STYLES
   ============================================ */

.tool-definition {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text-secondary);
    padding: var(--space-4) var(--space-5);
    background: var(--color-surface);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: var(--space-5) 0;
}

.tool-definition strong {
    color: var(--color-text-primary);
}

/* ============================================
   1. TOOL PAGE HEADER
   ============================================ */

.tool-page-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6);
    position: sticky;
    top: 0;
    z-index: 100;
}

.tool-page-header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tool-page-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.tool-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.back-button:hover {
    background: var(--color-accent);
    color: white;
}

/* ============================================
   2. TOOL PAGE MAIN CONTAINER
   ============================================ */

.tool-page-main {
    max-width: var(--content-max-width, 1400px);
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
    min-height: calc(100vh - var(--header-height, 72px));
}

@media (max-width: 1024px) {
    .tool-page-main {
        padding: var(--space-6) var(--space-4);
    }
}

@media (max-width: 768px) {
    .tool-page-main {
        padding: var(--space-4) var(--space-4);
        padding-bottom: calc(var(--space-16) + var(--mobile-nav-height) + 60px);
    }
}

.tool-container {
    width: 100%;
}

/* ============================================
   3. TOOL HEADER SECTION
   ============================================ */

.tool-header {
    margin-bottom: var(--space-8);
}

.tool-header-content {
    display: flex;
    gap: var(--space-6);
    align-items: flex-start;
    margin-bottom: var(--space-5);
}

@media (max-width: 768px) {
    .tool-header-content {
        flex-direction: column;
        gap: var(--space-4);
    }
}

.tool-icon-large {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-lg);
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

@media (max-width: 768px) {
    .tool-icon-large {
        width: 64px;
        height: 64px;
    }
}

.tool-header-info {
    flex: 1;
}

.tool-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

@media (max-width: 768px) {
    .tool-title {
        font-size: var(--text-xl);
    }
}

.tool-subtitle {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

@media (max-width: 768px) {
    .tool-subtitle {
        font-size: var(--text-sm);
    }
}

.tool-badges {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.badge {
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.badge-new {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.badge-popular {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-accent);
}

.badge-free {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

/* ============================================
   4. HUMAN SCORE SECTION
   ============================================ */

.human-score-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-sm);
}

.score-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.score-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.score-value {
    font-size: var(--text-3xl);
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-accent);
}

.score-meter {
    width: 100%;
    height: 12px;
    background: var(--color-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
    margin-bottom: var(--space-3);
}

.score-bar {
    height: 100%;
    background: linear-gradient(90deg, #ef4444 0%, #f59e0b 50%, #10b981 100%);
    border-radius: var(--radius-full);
    transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

.score-bar::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 40px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.score-hint {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ============================================
   5. TOOL INTERFACE - DUAL PANE
   ============================================ */

.tool-interface {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

@media (max-width: 1024px) {
    .tool-interface {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
}

.tool-pane {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.tool-pane:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}

.pane-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text-primary);
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-accent);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.btn-text:hover {
    background: var(--color-accent-subtle);
    transform: translateY(-1px);
}

.btn-text:active {
    transform: scale(0.98);
}

.tool-textarea {
    flex: 1;
    min-height: 400px;
    padding: var(--space-5);
    border: none;
    background: var(--color-surface);
    color: var(--color-text-primary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    font-family: inherit;
    resize: vertical;
    outline: none;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.tool-textarea::-webkit-scrollbar {
    width: 8px;
}

.tool-textarea::-webkit-scrollbar-track {
    background: transparent;
}

.tool-textarea::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

.tool-textarea::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

.tool-textarea::placeholder {
    color: var(--color-text-muted);
}

.tool-textarea:focus {
    background: var(--color-surface-elevated);
}

.tool-output {
    flex: 1;
    min-height: 400px;
    padding: var(--space-5);
    background: var(--color-surface);
    color: var(--color-text-primary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    word-break: break-word;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.tool-output::-webkit-scrollbar {
    width: 8px;
}

.tool-output::-webkit-scrollbar-track {
    background: transparent;
}

.tool-output::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

.tool-output::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

.output-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-muted);
    text-align: center;
    gap: var(--space-4);
}

.output-placeholder svg {
    opacity: 0.5;
}

.output-placeholder p {
    font-size: var(--text-base);
}

.pane-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
    font-size: var(--text-xs);
}

.char-count {
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

/* ============================================
   6. ACTION BUTTONS
   ============================================ */

.tool-actions {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .tool-actions {
        flex-direction: column;
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-weight: 500;
    font-size: var(--text-base);
    line-height: 1;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
    cursor: pointer;
    border: none;
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
    font-weight: 600;
}

@media (max-width: 768px) {
    .btn-large {
        width: 100%;
    }
}

.btn-primary {
    background: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.btn-ghost:hover {
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

/* Loading state */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   7. SEO CONTENT SECTION
   ============================================ */

.seo-content-section {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.seo-article {
    margin-bottom: var(--space-8);
}

.seo-article h2 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.seo-article p {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.seo-article p:last-child {
    margin-bottom: 0;
}

/* ============================================
   8. FAQ SECTION
   ============================================ */

.faq-section {
    margin-top: var(--space-10);
}

.section-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.faq-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-5);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    list-style: none;
    transition: background var(--transition-fast);
    color: var(--color-text-primary);
    background: var(--color-surface);
    border: none;
    text-align: left;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::after {
    content: '+';
    font-size: var(--text-xl);
    font-weight: 400;
    color: var(--color-accent);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--space-3);
}

.faq-item[open] .faq-question::after {
    transform: rotate(45deg);
}

.faq-question:hover {
    background: var(--color-accent-subtle);
}

.faq-answer {
    padding: 0 var(--space-5) var(--space-5);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    font-size: var(--text-base);
}

.faq-answer p {
    margin: 0;
}

/* ============================================
   9. AD CONTAINER
   ============================================ */

.ad-container {
    display: flex;
    justify-content: center;
    margin: var(--space-8) 0;
}

.ad-tool-side {
    margin-bottom: var(--space-8);
}

.ad-slot {
    background: var(--color-bg);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
    min-height: 250px;
}

.ad-placeholder {
    padding: var(--space-4);
    text-align: center;
}

/* ============================================
   10. RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .tool-textarea,
    .tool-output {
        min-height: 300px;
    }
    
    .tool-icon-large {
        width: 48px;
        height: 48px;
    }
    
    .tool-title {
        font-size: var(--text-lg);
    }
    
    .pane-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
    
    .tool-actions {
        gap: var(--space-2);
    }
    
    .btn {
        flex: 1;
        min-height: 44px;
    }
}

/* ============================================
   11. PRINT STYLES
   ============================================ */

@media print {
    .tool-page-header,
    .tool-actions,
    .ad-container,
    .btn-text {
        display: none;
    }
    
    .tool-interface {
        grid-template-columns: 1fr;
    }
    
    .tool-pane {
        page-break-inside: avoid;
        box-shadow: none;
    }
}

/* ============================================
   12. DARK MODE ADJUSTMENTS
   ============================================ */

[data-theme="dark"] .tool-pane {
    border-color: var(--color-border);
}

[data-theme="dark"] .tool-textarea,
[data-theme="dark"] .tool-output {
    background: var(--color-surface);
}

[data-theme="dark"] .tool-textarea:focus {
    background: var(--color-surface-elevated);
}

[data-theme="dark"] .score-bar {
    box-shadow: 0 0 8px rgba(129, 140, 248, 0.3);
}

/* ============================================
   13. TOOL PAGE SPECIFIC OVERRIDES
   ============================================ */

/* Override main-content for tool pages */
.main-content .tool-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Ensure tool page works without sidebar */
.main-content {
    padding: var(--space-8) var(--space-6);
    min-height: calc(100vh - var(--header-height, 72px));
}

@media (max-width: 768px) {
    .main-content {
        padding: var(--space-4);
        padding-bottom: calc(var(--space-16) + 60px);
    }
}

/* Fix desktop-only utility if missing */
.desktop-only {
    display: inline;
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
}

/* Related Tools Section */
.related-tools-section {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.related-tools-section h2 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.related-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
}

.related-tool-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: block;
}

.related-tool-card:hover {
    border-color: var(--color-linkedin, #0A66C2);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.related-tool-card h3 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.related-tool-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Last Updated - Freshness Signal */
.last-updated {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-6);
    padding: var(--space-2) var(--space-3);
    background: rgba(10, 102, 194, 0.08);
    border-radius: var(--radius-md);
}

.last-updated svg {
    color: var(--color-linkedin, #0A66C2);
}