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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    min-height: 100vh;
    padding: 20px;
}

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

header {
    text-align: center;
    padding: 40px 0;
}

h1 {
    font-size: 3em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    margin: 20px 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card h2 {
    margin-bottom: 20px;
    color: #ffd700;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.info-item {
    background: rgba(0, 0, 0, 0.2);
    padding: 20px;
    border-radius: 10px;
}

.info-item strong {
    display: block;
    color: #ffd700;
    margin-bottom: 10px;
}

.download-btn {
    display: inline-block;
    background: #ffd700;
    color: #333;
    padding: 15px 30px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
    margin: 10px;
    transition: transform 0.2s;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
}

.status {
    display: inline-block;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: bold;
}

.status.active {
    background: #4caf50;
}

code {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.demo-section {
    margin: 30px 0;
}

#testResult {
    margin-top: 20px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    font-family: 'Courier New', monospace;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

.instructions {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-left: 4px solid #ffd700;
    margin: 20px 0;
}

.instructions ol {
    margin-left: 20px;
    margin-top: 10px;
}

.instructions li {
    margin: 10px 0;
}

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

.card ul {
    margin: 20px 0 20px 30px;
    line-height: 2;
}