* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 10px;
    font-size: 28px;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-size: 16px;
}

form {
    display: flex;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

input {
    flex: 1;
    padding: 15px;
    font-size: 16px;
    border: 2px solid #ddd;
    border-radius: 10px;
    transition: border-color 0.3s;
    min-width: 200px;
}

input:focus {
    outline: none;
    border-color: #667eea;
}

button, .download-btn, .back-btn, .download-btn-secondary {
    padding: 15px 30px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 10px;
    transition: transform 0.2s, background 0.2s;
    text-decoration: none;
    display: inline-block;
}

button:hover, .download-btn:hover {
    background: #5a67d8;
    transform: translateY(-2px);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.feature {
    text-align: center;
    padding: 20px;
    background: #f7f7f7;
    border-radius: 10px;
}

.feature h3 {
    color: #667eea;
    margin-bottom: 10px;
}

.faq {
    margin-top: 40px;
    border-top: 2px solid #eee;
    padding-top: 40px;
}

.faq h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.faq-item {
    margin-bottom: 25px;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 10px;
}

.faq-item h3 {
    color: #667eea;
    margin-bottom: 10px;
    font-size: 18px;
}

.faq-item p {
    color: #555;
    line-height: 1.6;
}

.video-info {
    text-align: center;
    margin-bottom: 30px;
}

.video-info h2 {
    color: #333;
    margin-bottom: 10px;
    font-size: 22px;
}

.author {
    color: #667eea;
    font-size: 16px;
}

.video-container {
    text-align: center;
    margin: 30px 0;
    background: #000;
    border-radius: 10px;
    overflow: hidden;
}

video {
    width: 100%;
    max-width: 500px;
    display: block;
    margin: 0 auto;
}

.download-options {
    text-align: center;
    margin: 30px 0;
}

.download-btn, .download-btn-secondary {
    display: inline-block;
    margin: 10px;
    font-size: 18px;
    padding: 15px 40px;
}

.download-btn-secondary {
    background: #48bb78;
}

.download-btn-secondary:hover {
    background: #38a169;
}

.back-btn {
    background: #999;
    padding: 12px 25px;
    font-size: 14px;
}

.back-btn:hover {
    background: #777;
}

.video-meta {
    margin-top: 40px;
    padding: 20px;
    background: #f7f7f7;
    border-radius: 10px;
}

.video-meta h3 {
    margin-bottom: 15px;
    color: #333;
}

.video-meta ul {
    list-style: none;
    padding-left: 0;
}

.video-meta li {
    padding: 8px 0;
    color: #555;
}

.error-box {
    text-align: center;
    padding: 40px;
    background: #fee;
    border-radius: 10px;
}

.error-box h2 {
    color: #e53e3e;
    margin-bottom: 15px;
}

.error-box p {
    color: #666;
    margin-bottom: 25px;
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    button, .download-btn {
        width: 100%;
    }
    
    form {
        flex-direction: column;
    }
}