/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #8b0000;
    --accent-color: #d4af37;
    --text-color: #f5f5f5;
    --background-color: #2c2c2c;
    --card-background: #3a3a3a;
    --border-color: #555;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Source Sans Pro', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    font-family: 'Playfair Display', serif;
    color: var(--accent-color);
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.youtube-btn {
    background: var(--secondary-color);
    padding: 8px 16px;
    border-radius: 25px;
    transition: var(--transition);
}

.youtube-btn:hover {
    background: #a00000;
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(26, 26, 46, 0.7), rgba(26, 26, 46, 0.7)),
                url('assets/images/dark-academic-library.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--accent-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--text-color);
    font-style: italic;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Playfair Display', serif;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--text-color);
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    animation: fadeInUp 1s ease 0.6s both;
    box-shadow: var(--shadow);
}

.cta-button:hover {
    background: #a00000;
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--accent-color);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--accent-color);
}

/* Featured Section */
.featured-section {
    background: var(--primary-color);
}

.featured-video {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-info h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.video-info p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.video-stats {
    display: flex;
    gap: 2rem;
    color: #ccc;
    font-size: 0.9rem;
}

.video-stats i {
    color: var(--accent-color);
    margin-right: 5px;
}

/* Videos Section */
.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.video-card {
    background: var(--card-background);
    border-radius: 10px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.video-thumbnail {
    position: relative;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition);
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.7);
    color: var(--text-color);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition);
}

.video-card:hover .play-button {
    background: var(--secondary-color);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--text-color);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.8rem;
}

.video-details {
    padding: 1.5rem;
}

.video-details h4 {
    font-family: 'Playfair Display', serif;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    line-height: 1.4;
}

.video-details p {
    color: #ccc;
    font-size: 0.9rem;
}

.view-all-btn {
    text-align: center;
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    transition: var(--transition);
}

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

/* Playlists Section */
.playlists-section {
    background: var(--primary-color);
}

.playlists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.playlist-card {
    background: var(--card-background);
    border-radius: 10px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.playlist-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.playlist-thumbnail {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.playlist-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.playlist-card:hover .playlist-thumbnail img {
    transform: scale(1.05);
}

.playlist-overlay {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--text-color);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.9rem;
}

.playlist-info {
    padding: 1.5rem;
}

.playlist-info h4 {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

.playlist-info p {
    margin-bottom: 1rem;
    color: #ccc;
    line-height: 1.6;
}

.playlist-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.playlist-link:hover {
    color: var(--text-color);
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-description {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.quote {
    font-family: 'Crimson Text', serif;
    font-style: italic;
    font-size: 1.2rem;
    color: var(--accent-color);
    border-left: 4px solid var(--accent-color);
    padding-left: 1.5rem;
    margin: 2rem 0;
}

.channel-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

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

.feature i {
    color: var(--accent-color);
    font-size: 1.2rem;
    width: 20px;
}

.about-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* Contact Section */
.contact-section {
    background: var(--primary-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.contact-info p {
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    padding: 10px;
    border-radius: 5px;
}

.contact-link:hover {
    background: var(--card-background);
    color: var(--accent-color);
}

.contact-link i {
    font-size: 1.2rem;
    width: 20px;
}

.contact-form {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-color);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.submit-btn {
    background: var(--accent-color);
    color: var(--primary-color);
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    width: 100%;
}

.submit-btn:hover {
    background: #e6c547;
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: var(--primary-color);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

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

.footer-section h3,
.footer-section h4 {
    font-family: 'Playfair Display', serif;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-section p {
    line-height: 1.6;
    color: #ccc;
}

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

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

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--card-background);
    color: var(--text-color);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-color);
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: #ccc;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--primary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .featured-video {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .playlists-grid {
        grid-template-columns: 1fr;
    }

    .videos-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .nav-logo h2 {
        font-size: 1.2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .container {
        padding: 0 15px;
    }

    section {
        padding: 60px 0;
    }
}