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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 2rem;
}

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

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

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

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

main {
    display: grid;
    gap: 1.5rem;
}

.status-card,
.action-card,
.info-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.status-indicator {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
}

.status-indicator.online {
    background: #d1fae5;
    color: #065f46;
}

.status-indicator.offline {
    background: #fed7aa;
    color: #78350f;
}

.btn {
    width: 100%;
    padding: 1rem;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #2563eb;
}

.status-text {
    margin-top: 1rem;
    color: #6b7280;
    text-align: center;
}

.info-card ul {
    list-style: none;
}

.info-card li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.info-card li:last-child {
    border-bottom: none;
}

.info-card strong {
    color: #374151;
}

.info-card span {
    color: #6b7280;
    font-weight: 500;
}

footer {
    text-align: center;
    color: white;
    margin-top: 2rem;
    opacity: 0.8;
}

@media (max-width: 640px) {
    body {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .status-card,
    .action-card,
    .info-card {
        padding: 1.5rem;
    }
}