:root {
  --surface-page: #f5f7fb;
  --surface-panel: #ffffff;
  --surface-muted: #eef2f7;
  --text-primary: #17202e;
  --text-secondary: #526071;
  --border-subtle: #dbe3ee;
  --border-strong: #a8b5c6;
  --action-primary: #1f5f99;
  --action-primary-hover: #174f81;
  --danger: #b42318;
  --success-bg: #e8f6ee;
  --success-text: #17643a;
  --warning-bg: #fff4d6;
  --warning-text: #7a4b00;
  --info-bg: #e8f1fb;
  --info-text: #1f5f99;
  --radius-sm: 6px;
  --radius-md: 8px;
  --shadow-focus: 0 0 0 3px rgba(31, 95, 153, 0.24);
}

* { box-sizing: border-box; }
html { color-scheme: light; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--surface-page);
}

a { color: var(--action-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
.table-wrap:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
  padding: 12px 28px;
  background: var(--surface-panel);
  border-bottom: 1px solid var(--border-subtle);
}

.brand {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0;
  white-space: nowrap;
}

.topnav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.topnav a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 600;
}

.topnav a:hover {
  background: var(--surface-muted);
  color: var(--text-primary);
  text-decoration: none;
}

.logout-form { margin-left: auto; }

.page {
  width: min(1280px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 32px 0 64px;
}

h1 {
  margin: 0 0 24px;
  font-size: 40px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 14px;
  font-size: 20px;
  line-height: 1.25;
  font-weight: 650;
  letter-spacing: 0;
}

p { margin: 0 0 16px; }

.page-note,
.muted { color: var(--text-secondary); }

.page-note {
  max-width: 760px;
  margin-top: -12px;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.button,
button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface-panel);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.button:hover,
button:hover { background: #eef5fc; }

.button-primary {
  border-color: var(--action-primary);
  background: var(--action-primary);
  color: #ffffff;
}

.button-primary:hover { background: var(--action-primary-hover); }

.button-danger {
  border-color: var(--danger);
  background: #ffffff;
  color: var(--danger);
}

.button-danger:hover {
  background: #fff0ee;
  color: #8f1d14;
}

input,
textarea {
  width: 100%;
  min-width: 0;
  min-height: 40px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  background: #ffffff;
  color: var(--text-primary);
  font: inherit;
}

textarea { resize: vertical; }

label {
  display: grid;
  gap: 6px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 650;
}

.check {
  min-height: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.check input {
  width: 18px;
  min-height: 18px;
}

.grid-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  align-items: start;
  padding: 20px;
  background: var(--surface-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 28px;
}

.inline-actions { margin-bottom: 16px; }

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin: 18px 0 28px;
}

.metric,
.metrics div {
  background: var(--surface-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
}

.metric-lead { grid-column: span 2; }
.metrics b, .metrics span { display: block; }

.metrics b {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metrics span {
  margin-top: 8px;
  font-size: 28px;
  line-height: 1.2;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.split form {
  background: var(--surface-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  display: grid;
  gap: 12px;
  align-content: start;
}

.tabs {
  display: flex;
  gap: 8px;
  margin: 18px 0;
  flex-wrap: wrap;
}

.tabs a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: var(--surface-panel);
  color: var(--text-secondary);
  font-weight: 650;
}

.tabs a:hover {
  background: var(--surface-muted);
  text-decoration: none;
}

.tabs .active {
  border-color: var(--action-primary);
  background: var(--info-bg);
  color: var(--action-primary);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-panel);
}

table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
  vertical-align: top;
}

tr:last-child td { border-bottom: 0; }

th {
  background: var(--surface-muted);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td { color: var(--text-primary); }
.cell-nowrap { white-space: nowrap; }

.empty-cell {
  color: var(--text-secondary);
  text-align: center;
  padding: 28px 14px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  overflow-wrap: anywhere;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  background: var(--info-bg);
  color: var(--info-text);
  white-space: nowrap;
}

.badge-success,
.badge-issued { background: var(--success-bg); color: var(--success-text); }
.badge-available { background: var(--info-bg); color: var(--info-text); }
.badge-reserved { background: var(--warning-bg); color: var(--warning-text); }
.badge-muted,
.badge-disabled { background: var(--surface-muted); color: var(--text-secondary); }
.badge-neutral { background: var(--surface-muted); color: var(--text-primary); }

.notice,
.error {
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.notice {
  border: 1px solid #b8d7c6;
  background: var(--success-bg);
  color: var(--success-text);
}

.error {
  border: 1px solid #f0b8b2;
  background: #fff0ee;
  color: var(--danger);
}

.danger-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.login-body {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
  background: var(--surface-page);
}

.login-box {
  width: min(420px, 100%);
  display: grid;
  gap: 16px;
  background: var(--surface-panel);
  padding: 28px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.login-box h1 { margin-bottom: 2px; }

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .logout-form { margin-left: 0; }

  .page {
    width: min(100vw - 24px, 1280px);
    padding: 24px 0 48px;
  }

  h1 { font-size: 32px; }
  .metric-lead { grid-column: span 1; }
  .metrics span { font-size: 24px; }
}