* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #0f1117; color: #e1e4e8; }
.hidden { display: none !important; }
.error { color: #f85149; }

/* Login */
#login-screen { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { background: #161b22; padding: 2rem; border-radius: 8px; border: 1px solid #30363d; width: 320px; text-align: center; }
.login-box h1 { font-size: 1.2rem; margin-bottom: 1.5rem; }
.login-box input { width: 100%; padding: 10px; border: 1px solid #30363d; border-radius: 4px; background: #0d1117; color: #e1e4e8; margin-bottom: 1rem; font-size: 14px; }
.login-box input:focus { outline: none; border-color: #58a6ff; }
.login-box button { width: 100%; padding: 10px; border: none; border-radius: 4px; background: #238636; color: #fff; cursor: pointer; font-size: 14px; font-weight: 600; }
.login-box button:hover { background: #2ea043; }

/* Dashboard */
header { padding: 1rem 2rem; background: #161b22; border-bottom: 1px solid #30363d; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
header h1 { font-size: 1.1rem; }
.header-controls { display: flex; gap: 1rem; align-items: center; }
.header-controls select, .header-controls button { padding: 6px 12px; border: 1px solid #30363d; border-radius: 4px; background: #21262d; color: #e1e4e8; cursor: pointer; font-size: 13px; }
.header-controls button:hover { background: #30363d; }
#last-updated { font-size: 12px; color: #8b949e; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; padding: 1.5rem 2rem; }
.card { background: #161b22; border: 1px solid #30363d; border-radius: 8px; padding: 1.25rem; }
.card-label { font-size: 13px; color: #8b949e; margin-bottom: 0.5rem; }
.card-value { font-size: 2rem; font-weight: 700; }
.card.ok .card-value { color: #3fb950; }
.card.warn .card-value { color: #d29922; }
.card.bad .card-value { color: #f85149; }

/* Grid */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding: 0 2rem 1rem; }
.panel { background: #161b22; border: 1px solid #30363d; border-radius: 8px; padding: 1.25rem; }
.alerts-panel { margin: 0 2rem 1.5rem; }
.panel h2 { font-size: 0.95rem; margin-bottom: 1rem; color: #8b949e; }

/* Table */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 8px; color: #8b949e; border-bottom: 1px solid #30363d; font-weight: 600; }
td { padding: 8px; border-bottom: 1px solid #21262d; }
tr:hover td { background: #1c2128; }

.alert-badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 11px; font-weight: 600; background: #f8514926; color: #f85149; }
.alert-badge.success { background: #3fb95026; color: #3fb950; }

@media (max-width: 768px) {
    .cards { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    header { flex-direction: column; align-items: flex-start; }
}