:root {
  --admin-bg: #eef5fd;
  --admin-bg-alt: #e6effb;
  --admin-sidebar-surface: rgba(248, 251, 255, 0.92);
  --admin-surface: rgba(250, 253, 255, 0.9);
  --admin-surface-strong: rgba(255, 255, 255, 0.94);
  --admin-panel: rgba(241, 247, 255, 0.88);
  --admin-border: rgba(99, 126, 170, 0.12);
  --admin-border-strong: rgba(99, 126, 170, 0.2);
  --admin-text: #22374d;
  --admin-muted: #657b94;
  --admin-soft: #91a8c2;
  --admin-accent: #5c88df;
  --admin-accent-soft: #edf4ff;
  --admin-warm: #aa7a38;
  --admin-danger: #a55c59;
  --admin-success: #416f9d;
  --admin-radius-xl: 28px;
  --admin-radius-lg: 20px;
  --admin-radius-md: 14px;
  --admin-radius-sm: 10px;
  --admin-shadow: 0 22px 50px rgba(72, 99, 141, 0.08);
  --admin-shadow-soft: 0 10px 22px rgba(72, 99, 141, 0.05);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.94), transparent 28%),
    radial-gradient(circle at top right, rgba(216, 232, 255, 0.72), transparent 32%),
    linear-gradient(180deg, var(--admin-bg) 0%, var(--admin-bg-alt) 100%);
  color: var(--admin-text);
  font-family: "Aptos", "Source Sans 3", "Noto Sans", "Segoe UI", sans-serif;
}

.hidden {
  display: none !important;
}

.admin-shell {
  display: grid;
  grid-template-columns: minmax(188px, 212px) minmax(0, 1fr);
  gap: 1.15rem;
  min-height: 100vh;
  padding: 1rem;
}

.admin-sidebar,
.admin-header,
.admin-section-shell,
.admin-summary-card,
.setting-card,
.loading,
#admin-readonly-banner.notification {
  border: 1px solid var(--admin-border);
  box-shadow: var(--admin-shadow-soft);
}

.admin-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.1rem;
  border-radius: var(--admin-radius-xl);
  background: var(--admin-sidebar-surface);
  position: sticky;
  top: 1rem;
  height: calc(100vh - 2rem);
  backdrop-filter: blur(14px);
}

.admin-brand {
  display: grid;
  gap: 0.28rem;
}

.admin-kicker,
.section-shell-kicker,
.admin-context-label,
.admin-summary-label {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--admin-soft);
}

.admin-brand h1,
.admin-header h2,
.section-shell-header h3,
.admin-summary-value,
#admin-role-chip {
  margin: 0;
  font-family: "Fraunces", "Iowan Old Style", "Georgia", serif;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--admin-text);
}

.admin-brand h1 {
  font-size: 1.76rem;
}

.admin-brand p,
.admin-header p,
.section-shell-header p,
.admin-context-card p,
.admin-summary-copy,
.loading p,
.setting-card-heading p,
.form-group small,
.study-days-summary,
.facilities-summary,
.facility-stat-line,
.facility-id-line,
.facility-empty,
.study-day-empty,
.school-break-empty,
.study-day-meta,
.school-break-meta {
  margin: 0;
  color: var(--admin-muted);
  line-height: 1.52;
}

.admin-nav {
  display: grid;
  gap: 0.18rem;
}

.admin-nav-link {
  display: block;
  min-height: 42px;
  padding: 0.68rem 0.78rem;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--admin-muted);
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.admin-nav-link:hover,
.admin-nav-link:focus-visible {
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(92, 136, 223, 0.14);
  color: var(--admin-text);
}

.admin-nav-icon {
  display: none;
}

.admin-nav-text strong {
  color: currentColor;
  font-size: 0.93rem;
  font-weight: 600;
}

.admin-context-card {
  margin-top: auto;
  padding: 0.88rem 0.92rem;
  border-radius: var(--admin-radius-lg);
  border: 1px solid var(--admin-border);
  background: var(--admin-surface-strong);
}

#admin-role-chip {
  display: block;
  margin: 0.3rem 0 0;
  font-size: 1.18rem;
}

.admin-main {
  display: grid;
  gap: 0.95rem;
  align-content: start;
  min-width: 0;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  border-radius: var(--admin-radius-xl);
  background: var(--admin-surface-strong);
  box-shadow: var(--admin-shadow);
}

.admin-header-copy {
  display: grid;
  gap: 0.2rem;
  max-width: 660px;
}

.admin-header h2 {
  font-size: clamp(1.82rem, 2.6vw, 2.45rem);
  line-height: 1;
}

.admin-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 44px;
  padding: 0.68rem 0.88rem;
  border-radius: 12px;
  border: 1px solid var(--admin-border);
  background: rgba(255, 255, 255, 0.76);
  color: var(--admin-text);
  text-decoration: none;
  font-weight: 600;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.back-link:hover,
.back-link:focus-visible {
  background: var(--admin-surface-strong);
  border-color: var(--admin-border-strong);
}

.loading {
  display: grid;
  gap: 0.3rem;
  justify-items: center;
  text-align: center;
  padding: 1.85rem 1.2rem;
  border-radius: var(--admin-radius-lg);
  background: var(--admin-surface);
}

.loading strong {
  color: var(--admin-text);
  font-size: 1rem;
}

#settings-container {
  display: grid;
  gap: 0.95rem;
}

.admin-overview,
.admin-section-shell {
  display: grid;
  gap: 0.78rem;
}

.admin-section-shell {
  padding: 1rem;
  border-radius: var(--admin-radius-xl);
  background: rgba(251, 253, 255, 0.76);
}

.section-shell-header {
  display: grid;
  gap: 0.2rem;
}

.section-shell-header > div {
  display: grid;
  gap: 0.24rem;
}

.admin-summary-grid {
  display: grid;
  gap: 0.72rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.admin-summary-card {
  display: grid;
  gap: 0.28rem;
  padding: 0.9rem 0.95rem;
  border-radius: var(--admin-radius-lg);
  background: var(--admin-surface-strong);
}

.admin-summary-value {
  font-size: clamp(1.42rem, 2vw, 1.9rem);
  line-height: 1;
}

.admin-summary-copy {
  display: none;
}

.settings-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.settings-grid-single {
  grid-template-columns: minmax(0, 1fr);
}

.setting-card-full {
  grid-column: 1 / -1;
}

.setting-card {
  display: grid;
  gap: 1rem;
  padding: 1.08rem;
  border-radius: var(--admin-radius-lg);
  background: var(--admin-surface-strong);
}

.setting-card-heading {
  display: block;
}

.setting-card-icon {
  display: none;
}

.setting-card-heading h3,
.school-breaks-heading {
  margin: 0;
  color: var(--admin-text);
  font-size: 1rem;
  font-weight: 600;
}

.setting-card-heading p {
  display: none;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.form-group {
  margin-bottom: 0.3rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.38rem;
  color: var(--admin-text);
  font-weight: 600;
}

.form-group input,
.form-group select {
  width: 100%;
  min-height: 44px;
  padding: 0.7rem 0.82rem;
  border: 1px solid rgba(99, 126, 170, 0.16);
  border-radius: var(--admin-radius-sm);
  background: rgba(255, 255, 255, 0.88);
  color: var(--admin-text);
  font: inherit;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: rgba(92, 136, 223, 0.34);
  box-shadow: 0 0 0 4px rgba(92, 136, 223, 0.1);
  background: #ffffff;
}

.form-group-checkbox label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.form-group-checkbox input[type="checkbox"],
.checkbox-group input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  min-height: 0;
  accent-color: var(--admin-accent);
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.72rem 0.78rem;
  border-radius: var(--admin-radius-sm);
  border: 1px solid rgba(99, 126, 170, 0.12);
  background: var(--admin-panel);
  font-weight: 500;
}

.button-group {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 0.1rem;
}

.button-group-compact {
  margin-top: 0.6rem;
}

.button-group-wrap {
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.72rem 0.96rem;
  border: 1px solid transparent;
  border-radius: var(--admin-radius-md);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn-primary {
  background: var(--admin-accent);
  border-color: var(--admin-accent);
  color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #4f79ca;
  border-color: #4f79ca;
}

.btn-secondary {
  background: var(--admin-panel);
  color: var(--admin-text);
  border-color: rgba(99, 126, 170, 0.12);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: var(--admin-surface);
  border-color: var(--admin-border-strong);
}

.btn-danger {
  background: rgba(165, 87, 73, 0.08);
  color: var(--admin-danger);
  border-color: rgba(165, 87, 73, 0.16);
}

.btn-danger:hover,
.btn-danger:focus-visible {
  background: rgba(165, 87, 73, 0.12);
}

.btn:disabled {
  opacity: 0.56;
  cursor: not-allowed;
}

.notification {
  position: fixed;
  right: 1.25rem;
  top: 1.25rem;
  min-width: 280px;
  max-width: min(420px, calc(100vw - 2rem));
  padding: 0.9rem 1rem;
  border-radius: var(--admin-radius-md);
  border: 1px solid transparent;
  box-shadow: 0 20px 42px rgba(66, 92, 132, 0.12);
  z-index: 1000;
}

.notification.success {
  background: #f1f7ff;
  color: #254f81;
  border-color: rgba(92, 136, 223, 0.18);
}

.notification.error {
  background: #fff4f2;
  color: #7d3529;
  border-color: rgba(165, 87, 73, 0.18);
}

.notification.warning {
  background: #fff8ee;
  color: #6e4d1d;
  border-color: rgba(170, 122, 56, 0.18);
}

#admin-readonly-banner.notification {
  position: static;
  max-width: none;
  min-width: 0;
  margin: 0;
  box-shadow: var(--admin-shadow-soft);
}

.notification.is-closing {
  animation: fadeSlideOut 0.3s ease forwards;
}

@keyframes fadeSlideOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-8px);
  }
}

.facility-form-spacer {
  min-height: 1px;
}

.facilities-list,
.study-days-list,
.school-breaks-list {
  display: flex;
  flex-direction: column;
  gap: 0.72rem;
}

.facility-item,
.study-day-item,
.school-break-item {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  padding: 0.88rem 0.92rem;
  border-radius: var(--admin-radius-sm);
  border: 1px solid rgba(99, 126, 170, 0.1);
  background: var(--admin-panel);
}

.facility-meta {
  display: grid;
  gap: 0.32rem;
}

.facility-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.facility-title {
  color: var(--admin-text);
  font-size: 0.98rem;
}

.facility-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(92, 136, 223, 0.12);
  color: var(--admin-accent);
  font-size: 0.75rem;
  font-weight: 700;
}

.study-days-toolbar,
.study-days-filter-row {
  display: grid;
  gap: 0.8rem;
  align-items: end;
}

.study-days-toolbar {
  grid-template-columns: 1fr auto;
}

.study-days-filter-row {
  grid-template-columns: minmax(220px, 320px) 1fr;
}

.form-group-tight {
  margin-bottom: 0;
}

.section-divider {
  margin: 0.5rem 0 0;
  border: 0;
  border-top: 1px solid rgba(99, 126, 170, 0.1);
}

.school-breaks-heading {
  margin-top: 0.2rem;
}

.admin-context-card p,
.section-shell-header p {
  display: none;
}

#admin-configuration,
#admin-calendar,
#admin-overview {
  scroll-margin-top: 1rem;
}

@media (max-width: 1120px) {
  .admin-shell {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: static;
    height: auto;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .setting-card-full {
    grid-column: auto;
  }
}

@media (max-width: 840px) {
  .admin-header,
  .section-shell-header {
    flex-direction: column;
    align-items: stretch;
  }

  .form-row,
  .study-days-toolbar,
  .study-days-filter-row {
    grid-template-columns: 1fr;
  }

  .checkbox-group {
    grid-template-columns: 1fr;
  }

  .facility-item,
  .study-day-item,
  .school-break-item {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .admin-shell {
    padding: 0.85rem;
    gap: 1rem;
  }

  .admin-sidebar,
  .admin-header,
  .admin-section-shell,
  .setting-card,
  .loading {
    border-radius: 18px;
  }

  .notification {
    left: 0.85rem;
    right: 0.85rem;
    top: auto;
    bottom: 0.85rem;
    min-width: 0;
  }
}