:root {
  --bg: #eef1f6;
  --card: #ffffff;
  --line: #d8dee9;
  --ink: #1f2733;
  --muted: #6b7684;
  --brand: #2f6feb;
  --brand-dark: #1f56c4;
  --danger: #d13b3b;
  --ok: #1f8b52;
}

* { box-sizing: border-box; }

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

a { color: var(--brand); }

/* ---------- login ---------- */
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 12px 30px rgb(31 39 51 / 8%);
}

.login-card h1 {
  margin: 0 0 4px;
  font-size: 22px;
}

.login-card p.sub {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 13px;
}

/* ---------- shell ---------- */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar strong { font-size: 17px; }

.topbar .who {
  color: var(--muted);
  font-size: 13px;
}

.page {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.panel h2 {
  margin: 0 0 16px;
  font-size: 16px;
}

/* ---------- forms ---------- */
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

input[type="text"],
input[type="password"],
input[type="number"] {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  background: #fff;
  color: inherit;
}

input:focus {
  outline: 2px solid rgb(47 111 235 / 35%);
  border-color: var(--brand);
}

.field { margin-bottom: 16px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  align-items: end;
}

.btn {
  display: inline-block;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover { background: var(--brand-dark); }
.btn.block { width: 100%; }

.btn.ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
}

.btn.ghost:hover { background: #f3f5f9; }

.btn.danger {
  background: #fff;
  border-color: #eec3c3;
  color: var(--danger);
}

.btn.danger:hover { background: #fdf1f1; }

.btn.sm {
  padding: 5px 10px;
  font-size: 13px;
}

/* ---------- table ---------- */
table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}

tbody tr:hover { background: #f7f9fc; }

td.num, th.num { text-align: right; }
td.act { white-space: nowrap; }

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: #eef2fb;
  color: #37507e;
  font-size: 12px;
}

.low {
  color: var(--danger);
  font-weight: 700;
}

.empty {
  padding: 32px;
  text-align: center;
  color: var(--muted);
}

/* ---------- alerts ---------- */
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}

.alert.err {
  background: #fdf1f1;
  border: 1px solid #eec3c3;
  color: #8f2626;
}

.alert.ok {
  background: #eff8f2;
  border: 1px solid #bfe3cd;
  color: #146039;
}

.hint {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}