/* ─── Reset & base ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0d1117;
  --surface:   #161b22;
  --border:    #30363d;
  --text:      #c9d1d9;
  --text-dim:  #8b949e;
  --accent:    #58a6ff;
  --green:     #3fb950;
  --red:       #f85149;
  --orange:    #d29922;
  --purple:    #bc8cff;
  --font:      'Segoe UI', system-ui, sans-serif;
  --mono:      'Cascadia Code', 'Fira Mono', monospace;
}

html { font-size: 13px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px;
}

/* ─── Header ─────────────────────────────────────────────────────────── */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
}
.header-left { display: flex; align-items: center; gap: 10px; }
.logo  { font-size: 1.6rem; }
.title { font-size: 1.1rem; font-weight: 700; color: var(--accent); }
.subtitle { color: var(--text-dim); font-size: 0.9rem; }
.header-right { display: flex; align-items: center; gap: 12px; }
.version { color: var(--text-dim); font-size: 0.8rem; }

/* ─── Badge (WS status) ──────────────────────────────────────────────── */
.badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
}
.badge-offline { background: #2a1f1f; color: var(--red); }
.badge-online  { background: #1a2d1a; color: var(--green); }
.badge-demo    { background: #1e2030; color: var(--purple); }

/* ─── Cards ──────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.pill {
  background: #1f2937;
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
}
.pill-red { background: #2a1520; color: var(--red); }

/* ─── Stat cards row ─────────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}
.stat-card { padding: 14px 16px; }
.stat-label { font-size: 0.75rem; color: var(--text-dim); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .05em; }
.stat-value { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--text); }
.fraud-color { color: var(--red) !important; }

/* ─── Main grid (feed + alerts) ─────────────────────────────────────── */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 12px;
}

/* ─── Transaction feed table ─────────────────────────────────────────── */
.feed-card { display: flex; flex-direction: column; }
.table-wrap {
  overflow-y: auto;
  max-height: 320px;
}
table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
thead th {
  position: sticky;
  top: 0;
  background: #1c2330;
  color: var(--text-dim);
  font-weight: 600;
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: .06em;
}
tbody tr { border-bottom: 1px solid #1e242c; transition: background 0.15s; }
tbody tr:hover { background: #1e2636; }
tbody tr.fraud-row { background: #200e0e; }
tbody tr.fraud-row:hover { background: #2a1212; }
td { padding: 5px 10px; white-space: nowrap; }
td:nth-child(3) { font-family: var(--mono); color: var(--green); }
td:nth-child(1) { color: var(--text-dim); font-family: var(--mono); font-size: 0.72rem; }
td:nth-child(2) { font-weight: 600; }

/* type badge colours */
.type-TRANSFER  { color: var(--purple); }
.type-CASH_OUT  { color: var(--orange); }
.type-CASH_IN   { color: var(--green); }
.type-PAYMENT   { color: var(--accent); }
.type-DEBIT     { color: var(--text-dim); }

.status-ok   { color: var(--green); font-size: 0.72rem; }
.status-fraud { color: var(--red); font-weight: 700; font-size: 0.72rem; }

/* ─── Fraud alerts panel ─────────────────────────────────────────────── */
.alerts-card { display: flex; flex-direction: column; }
.alerts-list {
  overflow-y: auto;
  max-height: 320px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.alert-item {
  background: #1a0a0a;
  border: 1px solid #3d1a1a;
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 0.78rem;
  animation: fadeIn 0.3s ease;
}
.alert-item .alert-id   { font-family: var(--mono); color: var(--text-dim); font-size: 0.7rem; }
.alert-item .alert-amount { font-size: 1rem; font-weight: 700; color: var(--red); }
.alert-item .alert-rules  { margin-top: 4px; display: flex; gap: 4px; flex-wrap: wrap; }
.rule-badge {
  background: #3d1a1a;
  color: #ff7b72;
  padding: 1px 6px;
  border-radius: 8px;
  font-size: 0.68rem;
  font-weight: 600;
}
.alert-meta { color: var(--text-dim); margin-top: 3px; font-size: 0.72rem; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

/* ─── Charts row ─────────────────────────────────────────────────────── */
.charts-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.chart-card { padding: 8px; }
canvas { max-height: 180px; }

/* ─── Spark status bar ───────────────────────────────────────────────── */
footer.spark-bar {
  display: flex;
  gap: 24px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.78rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}
footer code { color: var(--accent); font-family: var(--mono); font-size: 0.75rem; }
footer strong { color: var(--text); }