* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.45;
  color: #1f2937;
  background: #f4f6f8;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px;
}

.site-header {
  background: #ffffff;
  border: 1px solid #d8dee6;
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
}

.site-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.site-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #0f172a;
}

.site-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.signed-in-as {
  margin-top: 4px;
  color: #4b5563;
  font-size: 0.95rem;
}

.page-content {
  display: grid;
  gap: 12px;
}

.card {
  background: #ffffff;
  border: 1px solid #d8dee6;
  border-radius: 12px;
  padding: 16px;
}

.card--hero {
  padding: 20px;
}

.card--narrow {
  max-width: 680px;
}

.page-heading {
  margin: 0 0 8px;
  font-size: 1.2rem;
  line-height: 1.15;
  color: #111827;
}

.lead {
  margin: 0;
  color: #4b5563;
  font-size: 1rem;
}

.muted {
  color: #6b7280;
  margin-top: 0;
}

.section-block {
  margin-top: 16px;
}

.section-heading {
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: #111827;
}

.list-clean {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.school-list-item {
  padding: 10px 12px;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  background: #fafbfc;
}

.school-list-item__detail {
  display: block;
  margin-top: 2px;
  color: #6b7280;
  font-size: 0.92rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.form-group {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.form-group label {
  font-weight: 600;
  color: #1f2937;
}

.form-group input,
.form-group select,
textarea {
  display: block;
  width: 100%;
  min-width: 0;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.2;
  background: #ffffff;
  color: #111827;
}

.form-group input,
.form-group select {
  min-height: 48px;
  height: 48px;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input[type='date'],
.form-group input[type='time'],
.form-group input[type='number'] {
  -webkit-appearance: none;
  appearance: none;
}

input[type='date'],
input[type='time'],
input[type='number'],
select,
textarea {
  max-width: 100%;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.checkbox-card {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 10px 12px;
  background: #fafbfc;
  cursor: pointer;
}

.checkbox-card input {
  width: 18px;
  height: 18px;
  margin: 0;
  flex: 0 0 auto;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.actions--compact {
  margin-top: 0;
}

.actions--stack {
  flex-direction: column;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}

.btn--large {
  min-height: 48px;
  padding: 12px 16px;
}

.btn--primary {
  background: #1d4ed8;
  color: #ffffff;
}

.btn--secondary {
  background: #ffffff;
  color: #1f2937;
  border-color: #cbd5e1;
}

.btn--danger {
  background: #ffffff;
  color: #b91c1c;
  border-color: #fecaca;
}

.page-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.meta-list {
  color: #4b5563;
  font-size: 0.95rem;
}

.tile-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.tile-card__title {
  margin: 0 0 6px;
  font-size: 1.1rem;
  color: #111827;
}

.tile-card__status {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  background: #eaf2ff;
  color: #1e40af;
  font-size: 0.85rem;
  font-weight: 600;
}

.kv-list {
  margin: 0;
  display: grid;
  gap: 6px;
}

.kv-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  border-bottom: 1px solid #eef2f7;
}

.kv-row:last-child {
  border-bottom: 0;
}

.kv-row dt {
  color: #6b7280;
}

.kv-row dd {
  margin: 0;
  font-weight: 600;
  color: #111827;
}

.message-text {
  margin: 0;
  color: #374151;
}

@media (min-width: 640px) {
  .app-shell {
    padding: 16px;
  }

  .card {
    padding: 18px;
  }

  .checkbox-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tile-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 700px) {
  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .form-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.bus-picker {
  margin-top: 16px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 12px;
  background: #fafbfc;
}

.bus-picker__summary {
  padding: 6px 2px;
}

.bus-picker__summary:hover {
  opacity: 0.9;
}

.bus-picker__title {
  font-weight: 700;
  color: #111827;
}

.bus-picker__hint {
  color: #6b7280;
  font-size: 0.95rem;
  margin-left: 8px;
}

.bus-picker__controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
  margin-bottom: 10px;
}