:root {
    /* YouTube-inspired color palette */
    --primary-color: #FF0000; /* YouTube Red */
    --secondary-color: #282828; /* YouTube Dark Gray */
    --accent-color: #AAAAAA; /* YouTube Light Gray */
    --success-color: #2BA640; /* Green */
    --danger-color: #FF0000; /* YouTube Red */
    --text-color: #030303;
    --bg-color: #000000;
    --card-bg: #ffffff;
    --input-bg: #f9f9f9;
    --input-border: #d3d3d3;
    --tag-bg: #f2f2f2;
    --tag-text: #000000;
    --footer-bg: #282828;
    --footer-text: #AAAAAA;
    --remove-btn: #FF0000;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --tag-high: #e6f4ea;
    --tag-medium: #fff8e6;
    --tag-low: #fce8e6;
    --tag-border-high: #ceead6;
    --tag-border-medium: #feefc3;
    --tag-border-low: #f8cac6;
    --tag-selected-bg: #FFDD57;
    --tag-selected-text: #000000;
}

/* Dark theme variables */
[data-theme="dark"] {
    --primary-color: #FF0000; /* YouTube Red */
    --secondary-color: #b80000; /* White */
    --accent-color: #AAAAAA; /* Light Gray */
    --text-color: #FFFFFF;
    --bg-color: #0F0F0F; /* YouTube dark background */
    --card-bg: #212121; /* YouTube card background */
    --input-bg: #121212;
    --input-border: #303030;
    --tag-bg: #383838;
    --tag-text: #FFFFFF;
    --footer-bg: #212121;
    --footer-text: #ffffff;
    --remove-btn: #FF0000;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --tag-high: #1e3a29;
    --tag-medium: #3c3520;
    --tag-low: #000000;
    --tag-border-high: #34a853;
    --tag-border-medium: #fbbc05;
    --tag-border-low: #ea4335;
    --tag-selected-bg: #FFDD57;
    --tag-selected-text: #000000;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
}

body {
    font-family: 'Roboto', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Enhanced Header Styles */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--card-bg);
    box-shadow: 0 2px 10px var(--shadow-color);
}

.header-top {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 0;
    font-size: 0.9rem;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-alert {
    animation: float 2s infinite ease-in-out;
}

.header-tools {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-select {
    padding: 0.3rem;
    border: none;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
}

.nav-content {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.has-dropdown {
    position: relative;
}

.dropdown-icon {
    font-size: 0.8em;
    margin-left: 0.3em;
    transition: transform 0.3s ease;
}

.has-dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 120%;
    left: -20px;
    min-width: 280px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 8px;
    border: 1px solid var(--input-border);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 2px 0;
}

.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.dropdown-menu li a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

.dropdown-menu li a i {
    font-size: 1.2em;
    width: 24px;
    text-align: center;
}

.dropdown-item-content {
    display: flex;
    flex-direction: column;
}

.dropdown-item-content span {
    font-weight: 500;
}

.dropdown-item-content small {
    font-size: 0.8em;
    opacity: 0.7;
}

/* Mobile Responsive Dropdown */
@media (max-width: 768px) {
    .dropdown-menu {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        margin-top: 8px;
        margin-left: 20px;
        border-left: 2px solid var(--primary-color);
    }

    .dropdown-menu li a {
        padding: 10px;
    }

    .dropdown-menu li a:hover {
        transform: translateX(0);
    }
}

.premium-btn {
    background: linear-gradient(45deg, #FFD700, #FFA500);
    color: black;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.premium-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-content {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
    }

    .nav-content.active {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: var(--input-bg);
        margin-top: 0.5rem;
    }
}

/* Main Content */
.main-content {
    flex: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* Hero Section */
.hero {
    padding: 3rem 0;
    text-align: center;
    background-color: var(--card-bg);
    margin-bottom: 2rem;
}

.main-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--accent-color);
}

/* Input Container */
.input-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.input-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.input-group input[type="text"] {
    flex: 1;
    padding: 0.8rem 1rem;
    border: 1px solid var(--input-border);
    border-radius: 2rem;
    font-size: 1rem;
    background-color: var(--input-bg);
    color: var(--text-color);
}

.input-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.generate-btn {
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 2rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.generate-btn:hover {
    background-color: #cc0000;
    transform: translateY(-2px);
}

/* Options Container */
.options-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: space-between;
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.option-group label {
    font-size: 0.9rem;
    color: var(--accent-color);
}

.option-group select, .option-group input[type="number"] {
    padding: 0.5rem;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 0.9rem;
}

.checkbox-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

/* Tags Section */
.tags-section {
    background-color: var(--card-bg);
    padding: 2rem 0;
    margin-bottom: 2rem;
}

.tag-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--input-border);
    padding-bottom: 1rem;
}

.tag-stat {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    margin: 0.5rem;
    border-radius: 50px;
    background-color: var(--tag-bg);
    color: var(--tag-text);
    font-weight: 500;
}

#selectedTagCount {
    background-color: #383838;
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.tag-action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.action-btn {
    padding: 0.6rem 1rem;
    border: none;
    border-radius: 2rem;
    background-color: var(--secondary-color);
    color: #ffffff; /* Ensure button text is black for visibility in light mode */
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background-color: var(--primary-color);
    color: rgb(0, 0, 0);
}

.action-btn:disabled {
    background-color: var(--input-border);
    cursor: not-allowed;
}

.tag-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    min-height: 100px;
    padding: 1rem;
    border-radius: 8px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
}

.initial-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    color: var(--accent-color);
}

.big-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    margin: 0.25rem;
    border-radius: 50px;
    background-color: var(--tag-bg);
    color: var(--tag-text);
    cursor: pointer;
    transition: all 0.3s ease;
    animation: fadeIn 0.5s ease-out;
    border: 2px solid transparent;
}

.tag.selected {
    background-color: #4CAF50; /* Green highlight for selected tags */
    color: rgb(255, 0, 0);
    border: 2px solid #45a049;
    transform: scale(1.05);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .tag.selected {
    background-color: #00C853; /* Brighter green for dark mode */
    color: #FFFFFF;
    border: 2px solid #00E676;
    box-shadow: 0 2px 8px rgba(0, 200, 83, 0.4);
}

.tag:not(.selected):hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

[data-theme="dark"] .tag:not(.selected):hover {
    background-color: #424242;
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
}

.tag.high-relevance {
    background-color: var(--tag-high);
    border: 1px solid var(--tag-border-high);
}

.tag.medium-relevance {
    background-color: var(--tag-medium);
    border: 1px solid var(--tag-border-medium);
}

.tag.low-relevance {
    background-color: var(--tag-low);
    border: 1px solid var(--tag-border-low);
}

.tag-success {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--success-color);
    padding: 1rem;
    font-weight: 500;
    animation: fadeIn 0.5s ease;
}

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

/* Features Section */
.features-section {
    padding: 3rem 0;
    background-color: var(--bg-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px var(--shadow-color);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--accent-color);
}

/* Blog Section Styles */
.blog-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow-color);
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.blog-section h1 {
    font-size: 2.2rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1.5rem;
}

.blog-section h2 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.blog-section p {
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-size: 1.1rem;
}

.blog-section ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.blog-section li {
    margin-bottom: 0.8rem;
    color: var(--text-color);
    font-size: 1.1rem;
}

.blog-section strong {
    color: var(--primary-color);
    font-weight: 600;
}

@media screen and (max-width: 768px) {
    .blog-section {
        padding: 1rem;
        margin: 1rem;
    }
    
    .blog-section h1 {
        font-size: 1.8rem;
    }
    
    .blog-section h2 {
        font-size: 1.4rem;
    }
    
    .blog-section p, .blog-section li {
        font-size: 1rem;
    }
}

/* Blog Styles */
.blog-post {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.post-meta {
    display: flex;
    gap: 1.5rem;
    color: var(--accent-color);
    margin: 1rem 0 2rem;
    font-size: 0.9rem;
}

.post-content {
    line-height: 1.8;
}

.post-content h2 {
    color: var(--primary-color);
    margin: 2rem 0 1rem;
}

.post-content p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

/* Popular Tags Section */
.popular-tags-section {
    padding: 3rem 0;
    background-color: var(--card-bg);
}

.popular-tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.category-btn {
    padding: 1rem;
    border: none;
    border-radius: 8px;
    background-color: var(--tag-bg);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.category-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Feedback Section */
.feedback-section {
    padding: 3rem 0;
    text-align: center;
    background-color: var(--bg-color);
}

.rating-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.rating-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--primary-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.rating-btn:hover {
    transform: scale(1.1);
}

/* FAQ Section */
.faq-section {
    padding: 3rem 0;
    background-color: var(--card-bg);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.faq-item {
    padding: 1.5rem;
    border-radius: 8px;
    background-color: var(--tag-bg);
    transition: transform 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-5px);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Share Section */
.share-section {
    padding: 3rem 0;
    text-align: center;
    background-color: var(--bg-color);
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.share-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
}

.share-btn.facebook { background-color: #1877f2; }
.share-btn.twitter { background-color: #1da1f2; }
.share-btn.linkedin { background-color: #0a66c2; }
.share-btn.copy { background-color: var(--secondary-color); }

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* Footer */
.footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--footer-bg);
    margin-top: 2rem;
}

.copyright {
    color: var(--footer-text);
    font-size: 0.9rem;
}

/* Enhanced Footer Styles */
.footer {
    background-color: var(--footer-bg);
    padding: 3rem 0 1.5rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--footer-text);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-3px);
    background: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid var(--input-border);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media screen and (max-width: 768px) {
    .footer {
        padding: 1rem;
        margin-top: 1.5rem;
    }
    
    .copyright {
        font-size: 0.8rem;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }

    .main-nav ul {
        justify-content: center;
    }

    .input-group {
        flex-direction: column;
    }

    .options-container {
        flex-direction: column;
    }

    .tag-action-buttons {
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links ul {
        justify-content: center;
    }

    .popular-tags-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .share-buttons {
        flex-direction: column;
    }

    .share-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Mobile Responsive Styles */
@media screen and (max-width: 768px) {
    body {
        font-size: 14px;
    }

    .tag {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
        margin: 0.15rem;
    }

    .tag-stat {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
        margin: 0.3rem;
    }

    .action-btn {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
        margin: 0.3rem;
    }

    h1 {
        font-size: 1.4rem;
        margin-bottom: 0.5rem;
    }

    h2 {
        font-size: 1.1rem;
        margin-bottom: 0.4rem;
    }

    .container {
        padding: 0.5rem;
        margin: 0.5rem;
    }

    #tagContainer {
        gap: 0.2rem;
    }

    .tag-info {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.3rem;
    }

    .tag-action-buttons {
        gap: 0.3rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer {
        padding: 0.5rem;
    }

    .footer-links {
        font-size: 0.8rem;
        gap: 0.5rem;
    }
}

/* About Page Styles */
.about-section {
    padding: 4rem 0;
    background-color: var(--card-bg);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.mission-statement {
    text-align: center;
    margin-bottom: 3rem;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature {
    text-align: center;
    padding: 2rem;
    background: var(--tag-bg);
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

/* Contact Page Styles */
.contact-section {
    padding: 4rem 0;
    background-color: var(--card-bg);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

.contact-form {
    background: var(--tag-bg);
    padding: 2rem;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--text-color);
}

.submit-btn {
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    background: var(--secondary-color);
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
}