:root {
    --bg: #0f172a;
    --bg-alt: #111827;
    --card: #1f2937;
    --text: #e5e7eb;
    --accent: #3b82f6;
    --accent-soft: rgba(59, 130, 246, 0.2);
    --online: #22c55e;
    --offline: #ef4444;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Roboto", system-ui, sans-serif;
    background: radial-gradient(circle at top, #1e293b, #020617);
    color: var(--text);
}

header {
    padding: 20px;
    text-align: center;
    background: linear-gradient(135deg, #1d4ed8, #0f766e);
    box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
}

header p {
    margin-top: 8px;
    opacity: 0.9;
}

main {
    max-width: 1100px;
    margin: 20px auto;
    padding: 0 15px 40px;
}

#summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.card {
    background: var(--card);
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    border: 1px solid rgba(148, 163, 184, 0.3);
}

.card h2 {
    margin: 0 0 8px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #9ca3af;
}

.card p {
    margin: 0;
    font-size: 1.6rem;
    color: var(--accent);
}

section h2 {
    margin: 20px 0 10px;
    font-size: 1.2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

thead {
    background: #020617;
}

th, td {
    padding: 10px 12px;
    text-align: left;
    font-size: 0.9rem;
}

th {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    color: #9ca3af;
}

tbody tr:nth-child(even) {
    background: #020617;
}

tbody tr:nth-child(odd) {
    background: #030712;
}

.status {
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    display: inline-block;
    font-size: 0.8rem;
}

.status.online {
    background: rgba(34, 197, 94, 0.15);
    color: var(--online);
}

.status.offline {
    background: rgba(239, 68, 68, 0.15);
    color: var(--offline);
}

canvas {
    background: var(--card);
    border-radius: 10px;
    padding: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

footer {
    text-align: center;
    padding: 10px 0 20px;
    font-size: 0.8rem;
    color: #9ca3af;
}