* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
    background: #1877f2;
    color: white;
    border-radius: 5px;
}

h1, h2, h3 {
    margin-bottom: 10px;
}

.error {
    color: #d32f2f;
    background: #ffebee;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #d32f2f;
}

.download-form {
    display: flex;
    margin-bottom: 30px;
}

.download-form input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px 0 0 5px;
    font-size: 16px;
}

.download-form button {
    padding: 0 20px;
    background: #42b72a;
    color: white;
    border: none;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    font-size: 16px;
}

.instructions {
    background: white;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.instructions ol {
    padding-left: 20px;
}

.video-info {
    background: white;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.download-options {
    background: white;
    padding: 20px;
    border-radius: 5px;
}

.download-btn {
    display: block;
    padding: 12px;
    background: #1877f2;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    margin-bottom: 10px;
}

.download-btn:hover {
    background: #166fe5;
}

.original-url {
    margin-top: 20px;
    font-size: 14px;
    color: #666;
}

footer {
    margin-top: 40px;
    text-align: center;
    font-size: 14px;
    color: #666;
}

footer a {
    color: #1877f2;
    text-decoration: none;
}