/* ========================================
   Paraphrasing Tool Styles
   Active AI Writer
======================================== */

/* Hero Section */
.paraphraser-hero {
    padding: 7rem 0 2rem;
    background: linear-gradient(180deg, rgba(93, 95, 239, 0.03) 0%, transparent 100%);
}

.paraphraser-hero .section-header {
    max-width: 800px;
    margin: 0 auto;
}

.paraphraser-hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

.paraphraser-hero .lead {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Tool Section */
.paraphraser-tool-section {
    padding: 2rem 0 4rem;
}

.paraphraser-tool {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

/* Language Bar */
.language-bar {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-light);
}

.language-tabs {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.language-tab {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-medium);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.language-tab:hover {
    background: var(--bg-subtle);
    color: var(--text-dark);
}

.language-tab.active {
    background: var(--bg-white);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.language-dropdown {
    position: relative;
}

.language-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 100;
    min-width: 200px;
    max-height: 300px;
    overflow-y: auto;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    display: none;
}

.language-dropdown:hover .language-dropdown-menu,
.language-dropdown-menu:hover {
    display: block;
}

.language-option {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--text-medium);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);
}

.language-option:hover {
    background: var(--bg-subtle);
    color: var(--primary-color);
}

/* Mode Bar */
.mode-bar {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    background: var(--bg-white);
}

.mode-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-medium);
}

.mode-tabs {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
    flex: 1;
}

.mode-tab {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-medium);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.mode-tab:hover {
    background: var(--bg-subtle);
    color: var(--text-dark);
}

.mode-tab.active {
    background: var(--primary-color);
    color: white;
}

/* Synonyms Control */
.synonyms-control {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: auto;
}

.synonyms-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-medium);
}

.synonyms-slider-container {
    position: relative;
    width: 100px;
    height: 24px;
    display: flex;
    align-items: center;
}

.synonyms-slider {
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-light);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.synonyms-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 3px solid var(--bg-white);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.synonyms-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.synonyms-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 3px solid var(--bg-white);
    box-shadow: var(--shadow-md);
}

.synonyms-track {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    padding: 0 2px;
}

.synonyms-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-medium);
    transition: all var(--transition-fast);
}

.synonyms-dot.active {
    background: var(--primary-color);
}

/* Editor Container */
.editor-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    min-height: 400px;
}

@media (max-width: 900px) {
    .editor-container {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto 1fr;
    }
}

/* Editor Panel */
.editor-panel {
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-light);
}

.panel-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-medium);
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.panel-btn:hover:not(:disabled) {
    background: var(--bg-subtle);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.panel-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Editor Wrapper */
.editor-wrapper {
    flex: 1;
    position: relative;
    min-height: 300px;
}

.editor-textarea {
    width: 100%;
    height: 100%;
    min-height: 300px;
    padding: 1.25rem;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-dark);
    background: var(--bg-white);
    border: none;
    outline: none;
    resize: none;
    font-family: var(--font-sans);
}

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

.editor-output {
    width: 100%;
    height: 100%;
    min-height: 300px;
    padding: 1.25rem;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-y: auto;
}

.editor-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    pointer-events: none;
}

.editor-textarea:not(:placeholder-shown) + .editor-placeholder {
    display: none;
}

.paste-text-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    background: var(--bg-white);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    pointer-events: auto;
    transition: all var(--transition-fast);
}

.paste-text-btn:hover {
    background: var(--primary-color);
    color: white;
}

.output-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 260px;
    color: var(--text-muted);
    text-align: center;
}

.output-placeholder p {
    margin-top: 1rem;
    font-size: 0.95rem;
}

/* Panel Footer */
.panel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-light);
    background: var(--bg-light);
    gap: 1rem;
}

.upload-doc {
    display: flex;
    align-items: center;
}

.upload-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-medium);
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-btn:hover {
    background: var(--bg-subtle);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.word-count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.paraphrase-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    min-width: 140px;
    font-size: 0.95rem;
    font-weight: 600;
    color: white;
    background: #1a8754;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.paraphrase-btn:hover:not(:disabled) {
    background: #157347;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 135, 84, 0.3);
}

.paraphrase-btn:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

.paraphrase-btn .btn-loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.paraphrase-btn .spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Output Stats */
.output-stats {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stat-divider {
    color: var(--border-medium);
}

/* Editor Divider */
.editor-divider {
    width: 1px;
    background: var(--border-light);
}

@media (max-width: 900px) {
    .editor-divider {
        width: 100%;
        height: 1px;
    }
}

/* Auth Notice */
.auth-notice {
    padding: 1rem 1.5rem;
    background: linear-gradient(90deg, rgba(93, 95, 239, 0.05), rgba(162, 89, 255, 0.05));
    border-top: 1px solid var(--border-light);
}

.auth-notice-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.auth-notice-content svg {
    color: var(--primary-color);
}

.auth-notice-content span {
    font-size: 0.95rem;
    color: var(--text-medium);
}

/* Usage Info */
.usage-info {
    padding: 0.75rem 1.5rem;
    background: var(--bg-light);
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 0.875rem;
}

.usage-text {
    color: var(--text-medium);
}

.upgrade-link {
    color: var(--primary-color);
    font-weight: 500;
}

.upgrade-link:hover {
    text-decoration: underline;
}

/* Features Section */
.paraphraser-features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient-subtle);
    border-radius: var(--radius-md);
    color: var(--primary-color);
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin: 0;
}

/* How It Works */
.steps-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.step-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    text-align: center;
    max-width: 280px;
    flex: 1;
    min-width: 220px;
}

.step-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    margin: 0 auto 1rem;
}

.step-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.step-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin: 0;
}

.step-arrow {
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .step-arrow {
        display: none;
    }
}

/* Use Cases */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

@media (max-width: 1024px) {
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
}

.use-case-card {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.use-case-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.use-case-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.use-case-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
    background: var(--bg-white);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);
}

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

.faq-question svg {
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}


.faq-answer p {
    font-size: 0.95rem;
    color: var(--text-medium);
    line-height: 1.7;
    margin: 0;
}

/* CTA Section */
.paraphraser-cta {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    margin-bottom: 1rem;
}

.cta-content .lead {
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Background Light */
.bg-light {
    background: var(--bg-light);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .paraphraser-hero {
        padding: 6rem 0 1.5rem;
    }
    
    .mode-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .synonyms-control {
        margin-left: 0;
        margin-top: 0.5rem;
    }
    
    .panel-footer {
        flex-wrap: wrap;
    }
    
    .paraphrase-btn {
        width: 100%;
        order: -1;
    }
    
    .auth-notice-content {
        flex-direction: column;
        text-align: center;
    }
}