body {
    background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
    font-family: 'Poppins', sans-serif;
    color: #e0e0e0;
    margin: 0;
}
header {
    display: flex;
    justify-content: space-between;
    padding: 20px 40px;
    background: rgba(0, 0, 0, 0.8);
}
header .logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: #00ff88;
}
nav a {
    color: #ccc;
    text-decoration: none;
    font-weight: 500;
}
.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
    text-align: left;
}
.video-section {
    margin: 20px 0;
    padding: 10px;
    background: #121212;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 255, 136, 0.2);
}
iframe {
    width: 100%;
    height: 500px;
    border: none;
    border-radius: 12px;
}
.button {
    display: inline-block;
    background: linear-gradient(135deg, #00ff88, #00cc66);
    color: #000;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}
.button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px #00ff88;
}
.progress-bar {
    width: 100%;
    background: #333;
    height: 12px;
    border-radius: 6px;
    margin: 20px 0;
}
.progress-fill {
    height: 12px;
    background: #00ff88;
    border-radius: 6px;
}
.small-text {
    font-size: 0.9rem;
    color: #aaa;
}
footer {
    text-align: center;
    padding: 20px;
    font-size: 0.8rem;
    color: #666;
}