:root {
  color-scheme: light;
  --anthracite: #2b2b31;
  --muted: #6f6f71;
  --border: #dbdbdb;
  --paper: #ffffff;
  --background: #f3f2f9;
  --indigo: #6c63a6;
  --blue: #48a5ae;
  --blue-dark: #2f7f87;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top right, rgba(108, 99, 166, 0.16), transparent 30rem), var(--background);
  color: var(--anthracite);
}

.admin-shell {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.admin-hero,
.admin-card {
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 24px 70px rgba(75, 63, 114, 0.12);
}

.admin-hero {
  padding: clamp(1.5rem, 4vw, 3rem);
  margin-bottom: 1.25rem;
}

.admin-hero h1 {
  margin: 0.2rem 0 0.8rem;
  font-size: clamp(2.6rem, 8vw, 5.2rem);
  line-height: 0.95;
}

.eyebrow {
  margin: 0;
  color: var(--blue-dark);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.admin-card {
  padding: clamp(1.2rem, 3vw, 2rem);
  margin-top: 1rem;
}

.admin-card h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.admin-help {
  color: var(--muted);
  margin-top: -0.4rem;
}

.capacity-input {
  width: 8rem;
  min-width: 6rem;
}

.capacity-empty {
  color: #9b3434;
  font-weight: 700;
}

.capacity-available {
  color: #246b55;
  font-weight: 700;
}

.table-sort-button {
  border: 0;
  padding: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.table-sort-button:hover,
.table-sort-button:focus-visible {
  color: var(--indigo);
  text-decoration: underline;
}

.admin-login-form {
  display: grid;
  max-width: 36rem;
  gap: 0.9rem;
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-weight: 750;
}

input,
select {
  min-height: 3rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  color: var(--anthracite);
  font: inherit;
}

.backup-policy {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.backup-toggle,
.backup-policy .inline-actions,
.backup-policy .status {
  grid-column: 1 / -1;
}

.backup-toggle {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.backup-toggle input {
  min-height: auto;
  width: 1.2rem;
  height: 1.2rem;
}

.backup-status {
  display: grid;
  grid-template-columns: minmax(12rem, 0.35fr) 1fr;
  gap: 0.55rem 1rem;
  margin: 1.5rem 0 0;
}

.backup-status dt {
  color: var(--muted);
  font-weight: 800;
}

.backup-status dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.button {
  width: fit-content;
  min-height: 3rem;
  padding: 0.75rem 1.2rem;
  border: 0;
  border-radius: 999px;
  background: var(--blue);
  color: white;
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.button--secondary {
  border: 1px solid var(--anthracite);
  background: white;
  color: var(--anthracite);
}

.button--danger {
  background: #a33b3b;
}

.button[disabled] {
  cursor: wait;
  opacity: 0.65;
}

.status {
  min-height: 1.4rem;
  color: var(--indigo);
  font-weight: 750;
}

.admin-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.5rem 0 1rem;
}

.admin-tab {
  padding: 0.7rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: white;
  color: var(--muted);
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.admin-tab.is-active {
  border-color: var(--indigo);
  background: var(--indigo);
  color: white;
}

.admin-panel > .admin-card,
.admin-panel > .kpi-grid {
  margin-top: 1rem;
}

@media (max-width: 760px) {
  .backup-policy {
    grid-template-columns: 1fr;
  }
}

.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.admin-dialog {
  width: min(42rem, calc(100% - 2rem));
  max-height: min(80vh, 48rem);
  padding: 1.8rem;
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  color: var(--anthracite);
  box-shadow: 0 24px 90px rgba(43, 43, 49, 0.3);
}

.admin-dialog::backdrop {
  background: rgba(43, 43, 49, 0.45);
}

.admin-dialog h2 {
  margin-top: 0;
}

.admin-dialog dl {
  display: grid;
  grid-template-columns: minmax(8rem, 0.35fr) 1fr;
  gap: 0.5rem 1rem;
}

.admin-dialog dt {
  color: var(--muted);
  font-weight: 850;
}

.admin-dialog dd {
  margin: 0;
  white-space: pre-wrap;
}

.dialog-close {
  float: right;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 1.8rem;
  cursor: pointer;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.kpi-card {
  padding: 1.2rem;
  border-top: 4px solid var(--blue);
  border-radius: 1rem;
  background: white;
}

.kpi-card span {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 800;
}

.kpi-card strong {
  display: block;
  margin-top: 0.45rem;
  color: var(--indigo);
  font-size: 2rem;
}

.table-wrap {
  overflow-x: auto;
}

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

th,
td {
  padding: 0.8rem 0.65rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.table-group-heading th {
  padding-top: 1.2rem;
  background: #e6e4f3;
  color: var(--anthracite);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  text-transform: none;
}

.table-subtotal td {
  background: #f3f2f9;
  color: var(--anthracite);
  font-weight: 850;
}

.pdf-link {
  color: #a33b3b;
}

a {
  color: var(--indigo);
  font-weight: 800;
}

.empty {
  color: var(--muted);
  font-style: italic;
}

@media (max-width: 760px) {
  .kpi-grid {
    grid-template-columns: 1fr 1fr;
  }

  .admin-toolbar {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }
}