:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --text: #111827;
  --text-muted: #6b7280;
  --text-subtle: #9ca3af;
  --accent: #2563eb;
  --good: #047857;
  --good-bg: #ecfdf5;
  --bad: #b91c1c;
  --bad-bg: #fef2f2;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --status-on: #10b981;
  --status-off: #d1d5db;
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.06);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 32px 80px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 24px;
}
.header h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}
.header .sync {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.header .sync .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--status-on);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* Range tabs */
.range-tabs {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.range-tabs button {
  background: transparent;
  border: 0;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 7px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.1s, color 0.1s;
}
.range-tabs button:hover { color: var(--text); }
.range-tabs button.active {
  background: var(--text);
  color: white;
}

/* Summary cards */
.summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.card .label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 6px;
}
.card .value {
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.card .sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Table */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}
thead th {
  background: #f9fafb;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-subtle);
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  user-select: none;
}
thead th.num { text-align: right; }
thead th.sortable { cursor: pointer; transition: color 0.1s, background 0.1s; }
thead th.sortable:hover { color: var(--text); background: #f3f4f6; }
thead th.sortable.active { color: var(--text); }
thead th .sort-arrow {
  display: inline-block;
  margin-left: 4px;
  font-size: 10px;
  opacity: 0;
  transition: opacity 0.1s;
}
thead th.sortable:hover .sort-arrow { opacity: 0.4; }
thead th.sortable.active .sort-arrow { opacity: 1; }
tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: #f9fafb; }

td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
td.ad-name {
  font-weight: 500;
  color: var(--text);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
td.muted {
  color: var(--text-muted);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Status pill */
.status {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--status-on);
}
.status.off { background: var(--status-off); }

/* ROAS conditional formatting */
.roas {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.roas.good { background: var(--good-bg); color: var(--good); }
.roas.bad  { background: var(--bad-bg);  color: var(--bad); }
.roas.zero { color: var(--text-subtle); background: transparent; font-weight: 400; }

/* Footer hint */
.hint {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-subtle);
  text-align: center;
}
.hint code {
  background: #f3f4f6;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 11px;
}