:root {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #38bdf8;
    --green: #4ade80;
    --red: #f87171;
    --radius: 12px;
}

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

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
}

.container {
    width: 100%;
    max-width: 720px;
}

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

h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.subtitle {
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 0.3rem;
}

.cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.25rem;
    border: 1px solid #334155;
    transition: border-color 0.2s;
}

.card:hover {
    border-color: var(--accent);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.card-header .icon {
    font-size: 1.3rem;
}

.card-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--muted);
}

.value {
    font-size: 1.6rem;
    font-weight: 700;
}

.value.online { color: var(--green); }
.value.offline { color: var(--red); }

.meta {
    font-size: 0.8rem;
    color: var(--muted);
    margin-top: 0.4rem;
}

.meta strong {
    color: var(--text);
    font-weight: 600;
}

/* Karta adresu serwera */
.address-card {
    margin-top: 1rem;
}

.address-row {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
    margin-top: 0.25rem;
}

.address {
    flex: 1;
    min-width: 0;
    font-family: ui-monospace, 'Cascadia Code', Menlo, Consolas, monospace;
    font-size: 0.9rem;
    background: #0b1220;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 0.6rem 0.75rem;
    color: var(--accent);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    user-select: all;
}

.copy-btn {
    flex-shrink: 0;
    background: var(--accent);
    color: #0b1220;
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1rem;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.15s, transform 0.05s;
}

.copy-btn:hover {
    background: #7dd3fc;
}

.copy-btn:active {
    transform: scale(0.97);
}

.copy-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.copy-btn.copied {
    background: var(--green);
}

footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.8rem;
    color: var(--muted);
}

footer .note {
    margin-top: 0.5rem;
    font-style: italic;
    opacity: 0.7;
}

@media (max-width: 520px) {
    .cards { grid-template-columns: 1fr; }
    .address-row { flex-direction: column; }
    .copy-btn { width: 100%; }
}