:root {
  --ink: #10201c;
  --muted: #5d716b;
  --line: #d8e3df;
  --bg: #f4f7f6;
  --card: #ffffff;
  --accent: #0f7a5c;
  --warn: #b06a12;
  --bad: #b3271e;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.5 "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 24px;
  background: var(--ink);
  color: #eef5f2;
}
.brand { font-weight: 700; letter-spacing: 0.2px; }
.brand-os { color: var(--accent); margin-left: 3px; }
.topbar nav a { color: #cfe0da; text-decoration: none; margin-right: 16px; }
.topbar nav a:hover { color: #fff; }
.spacer { flex: 1; }

main { padding: 24px; max-width: 1400px; margin: 0 auto; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 4px; }
h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.4px; color: var(--muted); margin: 16px 0 4px; }
.muted { color: var(--muted); font-size: 13px; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.bad { color: var(--bad); font-weight: 600; }
.error { color: var(--bad); }
.ok { color: var(--accent); }

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

body.centred main {
  min-height: 70vh;
  display: grid;
  place-items: center;
}
.pin-card { width: 320px; text-align: center; }

input, select, button {
  font: inherit;
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
}
input, select { width: 100%; margin: 8px 0; }
button {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  cursor: pointer;
}
button.link { background: none; border: none; color: var(--muted); text-decoration: underline; padding: 0; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin: 16px 0 24px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: flex; flex-direction: column; gap: 2px; }
.tile-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }
.tile-value { font-size: 26px; font-weight: 650; }
.tile-sub { font-size: 12px; color: var(--muted); }

.panels { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 16px; align-items: start; }
.panels .wide { grid-column: 1 / -1; }

table.grid { width: 100%; border-collapse: collapse; font-size: 14px; }
table.grid th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: 0.3px; color: var(--muted); border-bottom: 1px solid var(--line); padding: 6px 8px; }
table.grid td { padding: 6px 8px; border-bottom: 1px solid #eef3f1; }

.tag { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 20px; background: #e6efec; color: var(--muted); }
.tag.warn { background: #fdf0dd; color: var(--warn); }

.till-grid { display: grid; grid-template-columns: minmax(300px, 1fr) minmax(340px, 1.2fr); gap: 16px; align-items: start; }
.results { display: flex; flex-direction: column; gap: 4px; max-height: 55vh; overflow-y: auto; }
.result { display: flex; justify-content: space-between; gap: 12px; background: #fff; color: var(--ink); border: 1px solid var(--line); text-align: left; }
.result:hover { border-color: var(--accent); }
.total-line { display: flex; justify-content: space-between; padding: 10px 8px; border-top: 2px solid var(--line); font-size: 18px; margin-top: 8px; }
.pay-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 8px; align-items: center; }
.pay-row input, .pay-row select { margin: 0; }

.alert { padding: 8px 12px; border-radius: 8px; margin: 6px 0; font-size: 14px; border-left: 4px solid; }
.alert.info { background: #eef3f7; border-color: #5b7c99; }
.alert.warning { background: #fdf3e3; border-color: var(--warn); }
.alert.critical { background: #fdecea; border-color: var(--bad); color: #7d1b15; }