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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

header {
    text-align: center;
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

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

.card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
    color: #4CAF50;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.step {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.step-number {
    background: #4CAF50;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

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

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.feature span {
    font-size: 1.5rem;
}

#timestamp {
    font-size: 1.5rem;
    font-weight: bold;
    color: #4CAF50;
    margin: 1rem 0;
}

.btn {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn:hover {
    background: #45a049;
    transform: scale(1.05);
}

.install-btn {
    background: #2196F3;
    margin-top: 1rem;
}

.install-btn:hover {
    background: #1976D2;
}

.status {
    padding: 1rem;
    background: #f5f5f5;
    border-radius: 10px;
    margin-bottom: 1rem;
}

footer {
    text-align: center;
    color: white;
    padding: 2rem 0;
    margin-top: 2rem;
}

.cache-info {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* Responsive design */
@media (max-width: 600px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .steps, .features {
        grid-template-columns: 1fr;
    }
}