:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #e3e6ea;
  --text: #1c2430;
  --muted: #6b7684;
  --accent: #2563eb;
  --accent-dark: #1e4fc4;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 52px;
}

.brand { font-weight: 700; }

.tabs { display: flex; gap: 4px; flex: 1; height: 100%; }
.tabs a {
  display: flex;
  align-items: center;
  padding: 0 14px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.tabs a:hover { color: var(--text); }
.tabs a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

.userbox { display: flex; align-items: center; gap: 12px; }
.userbox a { text-decoration: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 24px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 24px 0 10px; }

.muted { color: var(--muted); }

button.link {
  background: none; border: none; color: var(--muted);
  cursor: pointer; font-size: inherit; padding: 0;
}
button.link:hover { color: var(--danger); }

button.primary, a.button {
  background: var(--accent); color: #fff; border: none; border-radius: 6px;
  padding: 9px 16px; font-size: 14px; font-weight: 600; cursor: pointer;
  text-decoration: none; display: inline-block;
}
button.primary:hover, a.button:hover { background: var(--accent-dark); }

button.secondary {
  background: var(--surface); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 14px; font-size: 14px; cursor: pointer;
}
button.secondary:hover { border-color: var(--muted); }

/* Auth pages */
.auth-card {
  max-width: 380px; margin: 10vh auto 0; background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; padding: 28px;
}
.auth-card h1 { text-align: center; }
.auth-card form { display: flex; flex-direction: column; gap: 14px; }
.auth-card label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }

input, select {
  padding: 9px 10px; border: 1px solid var(--border); border-radius: 6px;
  font-size: 14px; background: #fff; color: var(--text); width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }

.flash { padding: 10px 12px; border-radius: 6px; font-size: 14px; }
.flash.error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.flash.info { background: #eff6ff; color: var(--accent); border: 1px solid #bfdbfe; }
.flash.success { background: #f0fdf4; color: var(--ok); border: 1px solid #bbf7d0; }

/* Tables */
table.data {
  width: 100%; border-collapse: collapse; background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; overflow: hidden;
}
table.data th, table.data td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); }
table.data th { background: #fafbfc; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
table.data tr:last-child td { border-bottom: none; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }

.badge {
  display: inline-block; padding: 2px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
}
.badge.active { background: #f0fdf4; color: var(--ok); }
.badge.disabled { background: #fef2f2; color: var(--danger); }
.badge.other { background: #fffbeb; color: var(--warn); }
.badge.neutral { background: #f1f5f9; color: var(--muted); }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 18px; margin-bottom: 18px;
}

.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar form { display: flex; gap: 10px; align-items: center; }
.toolbar input, .toolbar select { width: auto; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } }

/* Summary cards */
.summary-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px; margin-bottom: 18px;
}
.scard {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 16px;
}
.scard .label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.scard .value { font-size: 22px; font-weight: 700; margin-top: 2px; font-variant-numeric: tabular-nums; }
.breakdown { font-size: 12px; color: var(--muted); font-weight: 400; margin-top: 2px; font-variant-numeric: tabular-nums; }

/* Sortable headers */
th a.sort { color: inherit; text-decoration: none; }
th a.sort:hover { color: var(--accent); }
th a.sort.sorted { color: var(--accent); }

/* Low balance warning */
td.low-balance { color: var(--danger); font-weight: 700; }

/* Date preset chips */
.presets { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface); color: var(--muted); text-decoration: none; font-size: 13px;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip-active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Products table expand/collapse */
.product-row { cursor: pointer; }
.product-row:hover td { background: #f8fafc; }
.hidden-row { display: none; }
.campaign-row td { background: #fcfcfd; font-size: 14px; }