:root {
  color-scheme: light;
  --bg: #f4f7f9;
  --panel: #ffffff;
  --text: #15202b;
  --muted: #647384;
  --line: #d9e2ea;
  --brand: #0f8f7a;
  --brand-dark: #0a6759;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

.shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

h1, h2, p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: 30px;
}

h2 {
  font-size: 22px;
}

.eyebrow {
  display: block;
  margin-bottom: 8px;
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

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

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 12px 30px rgba(21, 32, 43, .07);
}

.login-card {
  max-width: 460px;
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  color: var(--text);
  font-size: 16px;
}

button {
  min-height: 46px;
  border: 0;
  border-radius: 6px;
  padding: 0 18px;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  background: var(--brand-dark);
}

.admin-box {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

a {
  color: var(--brand-dark);
  font-weight: 700;
  text-decoration: none;
}

.alert {
  margin: 0;
  color: var(--danger);
  font-weight: 700;
}

.lookup-form {
  grid-template-columns: minmax(220px, 1fr) auto;
  align-items: end;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.stat-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fbfdfe;
}

.stat-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.stat-card strong {
  font-size: 24px;
}

.stat-card.total {
  background: #eef8f6;
}

.stat-card.remaining {
  background: #f8f2e9;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.detail-grid > div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  overflow-wrap: anywhere;
}

.back-button {
  display: inline-block;
  margin-bottom: 18px;
  border-radius: 6px;
  padding: 10px 14px;
  background: #eef8f6;
}

@media (max-width: 760px) {
  .topbar,
  .admin-box {
    align-items: flex-start;
    flex-direction: column;
  }

  .lookup-form,
  .stats-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }
}