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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #0f1117;
    color: #e1e4e8;
    min-height: 100vh;
}

/* Auth */
.auth-gate {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; background: #0f1117;
}
.auth-box {
    background: #1c1f2b; border-radius: 12px; padding: 40px;
    text-align: center; min-width: 320px;
}
.auth-box h2 { margin-bottom: 20px; color: #58a6ff; }
.auth-box input {
    width: 100%; padding: 10px 14px; border-radius: 8px;
    border: 1px solid #30363d; background: #0d1117; color: #e1e4e8;
    font-size: 14px; margin-bottom: 14px; outline: none;
}
.auth-box input:focus { border-color: #58a6ff; }
.auth-box button {
    width: 100%; padding: 10px; border-radius: 8px;
    background: #238636; color: #fff; border: none;
    font-size: 14px; cursor: pointer; font-weight: 600;
}
.auth-box button:hover { background: #2ea043; }

/* Header */
header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 24px; background: #161b22; border-bottom: 1px solid #30363d;
}
.header-left { display: flex; align-items: baseline; gap: 12px; }
header h1 { font-size: 20px; color: #58a6ff; }
.header-subtitle { font-size: 13px; color: #8b949e; }

/* Buttons */
.btn {
    padding: 8px 16px; border-radius: 6px; border: 1px solid #30363d;
    background: #21262d; color: #c9d1d9; font-size: 13px; cursor: pointer;
    transition: background .15s;
}
.btn:hover { background: #30363d; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-period.active, .btn-agg.active {
    background: #1f6feb; border-color: #1f6feb; color: #fff;
}

/* Tabs */
.tabs {
    display: flex; gap: 0; background: #161b22;
    border-bottom: 1px solid #30363d; padding: 0 24px;
}
.tab {
    padding: 12px 20px; border: none; background: none;
    color: #8b949e; font-size: 14px; cursor: pointer;
    border-bottom: 2px solid transparent; transition: all .15s;
}
.tab:hover { color: #c9d1d9; }
.tab.active { color: #58a6ff; border-bottom-color: #58a6ff; }

.tab-content { display: none; padding: 20px 24px; }
.tab-content.active { display: block; }

/* Toolbar */
.toolbar {
    display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
    margin-bottom: 16px;
}
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filters select {
    padding: 6px 10px; border-radius: 6px; border: 1px solid #30363d;
    background: #0d1117; color: #c9d1d9; font-size: 13px;
}
.updated-at { font-size: 12px; color: #8b949e; margin-left: auto; }
.period-selector, .aggregation-selector { display: flex; gap: 4px; }

/* Summary cards */
.summary-cards { display: flex; gap: 10px; flex-wrap: wrap; }
.card {
    display: flex; flex-direction: column; align-items: center;
    padding: 12px 20px; border-radius: 8px; min-width: 90px;
    background: #161b22; border: 1px solid #30363d;
}
.card-num { font-size: 22px; font-weight: 700; }
.card-label { font-size: 11px; color: #8b949e; margin-top: 2px; }
.card-ok .card-num { color: #3fb950; }
.card-err .card-num { color: #f85149; }
.card-total .card-num { color: #58a6ff; }
.card-metric .card-num { color: #d2a8ff; }

/* Tables */
.data-table {
    width: 100%; border-collapse: collapse;
    background: #161b22; border-radius: 8px; overflow: hidden;
}
.data-table th {
    text-align: left; padding: 10px 12px; font-size: 12px;
    color: #8b949e; background: #0d1117; border-bottom: 1px solid #30363d;
    font-weight: 600; text-transform: uppercase; letter-spacing: .5px;
    user-select: none;
}
.data-table th.sortable { cursor: pointer; }
.data-table th.sortable:hover { color: #58a6ff; }
.data-table td {
    padding: 8px 12px; font-size: 13px; border-bottom: 1px solid #21262d;
}
.data-table tr:hover { background: #1c2128; }
.data-table a { color: #58a6ff; text-decoration: none; }
.data-table a:hover { text-decoration: underline; }

/* Status badges */
.status-badge {
    display: inline-block; padding: 2px 8px; border-radius: 10px;
    font-size: 12px; font-weight: 600;
}
.status-ok { background: #0d2818; color: #3fb950; }
.status-warn { background: #2d1b00; color: #d29922; }
.status-err { background: #2d0000; color: #f85149; }
.status-unknown { background: #21262d; color: #8b949e; }

/* Server cards */
.server-cards { display: flex; gap: 16px; flex-wrap: wrap; }
.server-card {
    flex: 1; min-width: 300px; background: #161b22;
    border: 1px solid #30363d; border-radius: 10px; padding: 20px;
}
.server-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.server-header h3 { font-size: 16px; }
.server-dot {
    width: 12px; height: 12px; border-radius: 50%;
}
.dot-green { background: #3fb950; box-shadow: 0 0 6px #3fb950; }
.dot-yellow { background: #d29922; box-shadow: 0 0 6px #d29922; }
.dot-gray { background: #484f58; }
.server-info { display: flex; flex-direction: column; gap: 8px; }
.server-row {
    display: flex; justify-content: space-between; font-size: 14px;
    padding: 4px 0; border-bottom: 1px solid #21262d;
}
.server-row span:first-child { color: #8b949e; }

/* Responsive */
@media (max-width: 768px) {
    header { flex-direction: column; gap: 10px; }
    .toolbar { flex-direction: column; align-items: flex-start; }
    .filters { width: 100%; }
    .updated-at { margin-left: 0; }
}