:root {
  --bg: #f6f8fa;
  --panel: #ffffff;
  --border: #d8dde3;
  --border-strong: #c4ccd4;
  --text: #1f2328;
  --muted: #6a737d;
  --green: #1a7f37;
  --green-soft: #dafbe1;
  --red: #cf222e;
  --red-soft: #ffebe9;
  --amber: #9a6700;
  --amber-soft: #fff8c5;
  --blue: #0969da;
  --blue-soft: #ddf4ff;
  --purple: #8250df;
  --row-hover: #f0f4f8;
  --shadow: 0 1px 3px rgba(27,31,36,.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
}

a { color: var(--blue); text-decoration: none; }

/* ---- Top bar ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #24292f;
  color: #fff;
  padding: 10px 18px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar .brand { font-weight: 700; font-size: 15px; letter-spacing: .3px; }
.topbar .spacer { flex: 1; }
.topbar .who { opacity: .85; font-size: 12px; }
.topbar .dot { width: 8px; height: 8px; border-radius: 50%; background: #f85149; display: inline-block; margin-right: 5px; }
.topbar .dot.on { background: #3fb950; }

/* ---- Buttons ---- */
button, .btn {
  font: inherit;
  border: 1px solid var(--border-strong);
  background: #fff;
  color: var(--text);
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  line-height: 1.4;
}
button:hover, .btn:hover { background: #f3f4f6; }
button:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--green); border-color: var(--green); color: #fff; }
.btn-primary:hover { background: #176b2e; }
.btn-blue { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn-blue:hover { background: #085bc0; }
.btn-xs { padding: 2px 7px; font-size: 11px; border-radius: 5px; }

/* ---- Cards ---- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; padding: 16px; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .4px; }
.card .value { font-size: 24px; font-weight: 700; margin-top: 4px; }

/* ---- Spreadsheet table ---- */
.sheet-wrap { padding: 0 12px 40px; overflow-x: auto; }
table.sheet {
  border-collapse: collapse;
  width: 100%;
  background: #fff;
  font-size: 12.5px;
}
table.sheet th, table.sheet td {
  border: 1px solid var(--border);
  padding: 5px 8px;
  text-align: left;
  vertical-align: top;
}
table.sheet th {
  background: #eef1f4;
  position: sticky;
  top: 44px;
  z-index: 10;
  font-weight: 600;
  white-space: nowrap;
}
table.sheet tr:hover td { background: var(--row-hover); }
td.note-cell { min-width: 160px; }
td[contenteditable] { outline: none; }
td[contenteditable]:focus { background: var(--blue-soft); box-shadow: inset 0 0 0 2px var(--blue); }
.cell-actions { white-space: nowrap; display: flex; gap: 4px; flex-wrap: wrap; }

/* ---- Badges ---- */
.badge {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge.repeat { background: var(--blue-soft); color: var(--blue); }
.badge.fraud  { background: var(--red-soft); color: var(--red); }
.badge.vip    { background: #fbefff; color: var(--purple); }
.badge.taken  { background: var(--amber-soft); color: var(--amber); }
.badge.mine   { background: var(--green-soft); color: var(--green); }

/* ---- Status select colouring ---- */
select.status { border: 1px solid var(--border); border-radius: 5px; padding: 3px 5px; font: inherit; }
select.status.pending    { background: var(--amber-soft); }
select.status.processing { background: var(--blue-soft); }
select.status.completed  { background: var(--green-soft); }
select.status.cancelled  { background: var(--red-soft); }
select.status.on-hold    { background: #eee; }

/* ---- Toolbar ---- */
.toolbar { display: flex; gap: 8px; align-items: center; padding: 12px 16px; flex-wrap: wrap; }
.toolbar input, .toolbar select {
  font: inherit; padding: 5px 8px; border: 1px solid var(--border-strong); border-radius: 6px;
}
.statbar { display: flex; gap: 18px; padding: 8px 16px; background: #eef1f4; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.statbar b { color: var(--text); }
.statbar span { color: var(--muted); }

/* ---- Login ---- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; }
.login-box {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 30px 28px; width: 320px; box-shadow: 0 10px 30px rgba(27,31,36,.1);
}
.login-box h1 { margin: 0 0 4px; font-size: 20px; }
.login-box p { margin: 0 0 20px; color: var(--muted); font-size: 12px; }
.login-box label { display: block; font-size: 12px; margin: 12px 0 4px; font-weight: 600; }
.login-box input { width: 100%; padding: 9px 10px; border: 1px solid var(--border-strong); border-radius: 6px; font: inherit; }
.login-box button { width: 100%; margin-top: 20px; padding: 10px; }
.login-err { color: var(--red); font-size: 12px; margin-top: 12px; min-height: 16px; }

/* ---- Toast ---- */
#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 200; }
.toast {
  background: #24292f; color: #fff; padding: 10px 14px; border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0,0,0,.2); font-size: 12.5px; animation: slidein .2s ease;
}
.toast.good { background: var(--green); }
.toast.bad { background: var(--red); }
@keyframes slidein { from { transform: translateY(10px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---- Misc panels ---- */
.section { padding: 16px; }
.section h2 { font-size: 15px; margin: 0 0 10px; }
.panel { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 14px; box-shadow: var(--shadow); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }
.muted { color: var(--muted); }
.right { text-align: right; }
.hidden { display: none !important; }