:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --border: #2a2f3a;
  --text: #e8eaed;
  --muted: #9aa3af;
  --accent: #4f8cff;
  --good: #3ecf8e;
  --warn: #f5a623;
  --bad: #f0554e;
  --radius: 10px;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f5f6f8;
    --panel: #ffffff;
    --panel-2: #f0f1f4;
    --border: #dde1e7;
    --text: #1b1f27;
    --muted: #5b6472;
  }
}
:root[data-theme="light"] {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --panel-2: #f0f1f4;
  --border: #dde1e7;
  --text: #1b1f27;
  --muted: #5b6472;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 14px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

header h1 { font-size: 16px; margin: 0; }

nav { display: flex; gap: 4px; }
nav button {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 8px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
}
nav button.active { background: var(--panel-2); color: var(--text); }

#restaurant-select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 13px;
}

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

.grid { display: grid; gap: 16px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 900px) {
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid.cols-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.stat-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat-value { font-size: 22px; font-weight: 600; margin-top: 6px; }
.stat-value.good { color: var(--good); }
.stat-value.bad { color: var(--bad); }

table { width: 100%; border-collapse: collapse; }
.table-wrap { overflow-x: auto; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--panel-2); }

.badge { padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.good { background: rgba(62,207,142,.15); color: var(--good); }
.badge.warn { background: rgba(245,166,35,.15); color: var(--warn); }
.badge.bad { background: rgba(240,85,78,.15); color: var(--bad); }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.filters input, .filters select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 13px;
}

.section-title { font-size: 14px; font-weight: 600; margin: 24px 0 12px; }
.section-title:first-child { margin-top: 0; }

.breakdown-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); }
.breakdown-row:last-child { border-bottom: none; font-weight: 600; }
.breakdown-row .label { color: var(--muted); }

.back-link { color: var(--accent); cursor: pointer; font-size: 13px; margin-bottom: 12px; display: inline-block; }

.margin-summary {
  text-align: center;
  padding: 24px;
}
.margin-summary .pct { font-size: 40px; font-weight: 700; }
.margin-summary .amount { font-size: 18px; color: var(--muted); margin-top: 4px; }

form.inline { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
form.inline input, form.inline select { flex: 1; min-width: 120px; }
button.primary {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
button.primary:hover { opacity: .9; }

.empty { color: var(--muted); padding: 24px; text-align: center; }