:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-border: #262b36;
  --text: #e8eaed;
  --muted: #9aa3b2;
  --accent: #4f8cff;
  --good: #33c37e;
  --bad: #ff5c6c;
  --warn: #f5a623;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6f9;
    --panel: #ffffff;
    --panel-border: #e2e6ee;
    --text: #1c2230;
    --muted: #5b6474;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

header h1 {
  font-size: 20px;
  margin: 0;
}
header .subtitle {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.toolbar select, .toolbar input[type="date"], .toolbar button {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
}

.toolbar button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 600;
}
.toolbar button.primary:hover { opacity: 0.9; }

.toolbar button.ghost {
  cursor: pointer;
}

main {
  padding: 24px 28px 60px;
  max-width: 1400px;
  margin: 0 auto;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 26px;
}

.kpi-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 16px 18px;
}
.kpi-card .label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.kpi-card .value {
  font-size: 26px;
  font-weight: 700;
  margin-top: 6px;
}
.kpi-card .delta {
  font-size: 12px;
  margin-top: 4px;
  font-weight: 600;
}
.delta.up { color: var(--good); }
.delta.down { color: var(--bad); }
.delta.flat { color: var(--muted); }

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 22px;
}
.panel h2 {
  font-size: 15px;
  margin: 0 0 14px;
}

.charts-row {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 18px;
}
@media (max-width: 900px) {
  .charts-row { grid-template-columns: 1fr; }
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 9px 10px;
  border-bottom: 1px solid var(--panel-border);
  white-space: nowrap;
}
th {
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}
th.sorted::after { content: ' \25BE'; }
tr.team-row td {
  font-weight: 700;
  border-top: 2px solid var(--panel-border);
}
.rate-pill {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.rate-good { background: rgba(51,195,126,0.15); color: var(--good); }
.rate-mid { background: rgba(245,166,35,0.18); color: var(--warn); }
.rate-bad { background: rgba(255,92,108,0.15); color: var(--bad); }

.agents-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-height: 160px;
  overflow-y: auto;
  margin-bottom: 8px;
}
.agents-picker label {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--panel-border);
  padding: 5px 10px;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
}

.empty-state {
  color: var(--muted);
  text-align: center;
  padding: 40px 0;
}

.loading {
  color: var(--muted);
  font-size: 13px;
}