/* General Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Header */
header {
    background-color: #fff;
    border-bottom: 1px solid #ddd;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo img {
    height: 50px;
    width: auto;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: #555;
    font-weight: bold;
    padding: 5px 0;
    display: block;
}

nav ul li a:hover {
    color: #007bff;
    text-decoration: none;
}

.search-box {
    display: flex;
    align-items: center;
}

.search-box input {
    border: 1px solid #ddd;
    padding: 8px 10px;
    border-radius: 5px;
    margin-right: 5px;
    width: 180px;
}

.search-box button {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
}

.search-box button:hover {
    background-color: #0056b3;
}

/* Hero Banner */
.hero-banner {
    position: relative;
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.hero-banner img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    filter: brightness(0.6);
}

.hero-banner h1,
.hero-banner p,
.hero-banner .btn-primary {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
}

.hero-banner h1 {
    top: 30%;
    font-size: 3em;
    margin-bottom: 10px;
}

.hero-banner p {
    top: 50%;
    font-size: 1.2em;
    margin-bottom: 20px;
}

.hero-banner .btn-primary {
    top: 65%;
    background-color: #28a745;
    color: #fff;
    padding: 12px 25px;
    border-radius: 5px;
    font-size: 1.1em;
    transition: background-color 0.3s ease;
}

.hero-banner .btn-primary:hover {
    background-color: #218838;
    text-decoration: none;
}

/* Content Sections */
.content-section {
    padding: 40px 0;
}

.content-section h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 2.2em;
    color: #333;
}

.bg-light {
    background-color: #e9ecef;
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.video-card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.video-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.video-card h3 {
    font-size: 1.3em;
    margin: 15px;
    color: #333;
}

.video-card p {
    font-size: 0.9em;
    margin: 0 15px 15px;
    color: #666;
}

.video-card .play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0,0,0,0.7);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 2em;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-card:hover .play-button {
    opacity: 1;
}

/* AI Features */
.ai-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.feature-card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px;
    text-align: center;
}

.feature-card img {
    height: 150px;
    object-fit: contain;
    margin: 0 auto 15px;
}

.feature-card h3 {
    font-size: 1.4em;
    color: #333;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 1em;
    color: #666;
}

/* Expert Grid */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.expert-card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px;
    text-align: center;
}

.expert-card img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 15px;
    border: 3px solid #007bff;
}

.expert-card h3 {
    font-size: 1.5em;
    color: #333;
    margin-bottom: 5px;
}

.expert-card p {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 15px;
}

.expert-card .btn-secondary {
    background-color: #6c757d;
    color: #fff;
    padding: 8px 15px;
    border-radius: 5px;
    margin: 5px;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.expert-card .btn-secondary:hover {
    background-color: #5a6268;
    text-decoration: none;
}

/* Testimonials */
.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.testimonial-card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px;
    font-style: italic;
}

.testimonial-card p {
    margin-bottom: 10px;
    color: #555;
}

.testimonial-card span {
    display: block;
    text-align: right;
    font-weight: bold;
    color: #333;
}

/* FAQ */
.faq-list {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px;
}

.faq-item {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.faq-item h3 {
    font-size: 1.2em;
    color: #007bff;
    margin-bottom: 5px;
}

.faq-item p {
    font-size: 0.95em;
    color: #555;
}

/* Download Info */
.download-info {
    text-align: center;
    padding: 30px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.download-info img {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    border: 1px solid #ddd;
    padding: 10px;
    border-radius: 5px;
}

.download-info p {
    font-size: 1.1em;
    color: #333;
    font-weight: bold;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    padding: 30px 0;
    text-align: center;
    font-size: 0.9em;
}

footer a {
    color: #007bff;
}

footer a:hover {
    color: #66b3ff;
}

.footer-links a {
    margin: 0 10px;
}

.contact-info p {
    margin: 5px 0;
}

.social-share p {
    margin-top: 15px;
    margin-bottom: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-banner h1 {
        font-size: 2em;
    }

    .hero-banner p {
        font-size: 1em;
    }

    nav ul {
        flex-direction: column;
        width: 100%;
        margin-top: 10px;
    }

    nav ul li {
        margin: 5px 0;
        text-align: center;
    }

    .search-box {
        width: 100%;
        justify-content: center;
        margin-top: 10px;
    }

    .search-box input {
        width: 70%;
    }

    .video-grid, .ai-features, .expert-grid, .testimonials {
        grid-template-columns: 1fr;
    }
}