.site-header {
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: start;
  gap: var(--space-1) var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.site-header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  grid-column: 1;
  grid-row: 1;
}

.site-logo-mark {
  flex-shrink: 0;
  display: block;
}

.site-header-titles {
  min-width: 0;
}

.site-header-actions {
  grid-column: 2;
  grid-row: 1;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  justify-self: end;
}

.header-text-btn {
  min-height: 2.25rem;
  padding: 0 var(--modus-wc-spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: var(--modus-wc-font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.header-text-btn:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.modus-theme-switch {
  display: inline-flex;
  align-items: stretch;
  gap: 0;
  padding: 2px;
  border: 1px solid var(--color-border);
  border-radius: var(--modus-wc-border-radius-md);
  background: var(--color-surface-2);
  box-shadow: var(--shadow-sm);
}

.modus-theme-switch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-width: 2.75rem;
  min-height: 2rem;
  padding: 0.35rem 0.65rem;
  border: none;
  border-radius: calc(var(--modus-wc-border-radius-md) - 2px);
  background: transparent;
  color: var(--color-muted);
  font-family: var(--modus-wc-font-family);
  font-size: var(--modus-wc-font-size-sm);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    box-shadow 0.15s ease;
}

.modus-theme-switch-btn:hover:not([aria-pressed="true"]) {
  color: var(--color-text);
  background: var(--color-surface);
}

.modus-theme-switch-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.modus-theme-switch-btn[aria-pressed="true"] {
  color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.modus-theme-switch-icon {
  display: block;
  flex-shrink: 0;
}

.modus-theme-switch-label {
  display: none;
}

@media (min-width: 900px) {
  .modus-theme-switch-label {
    display: inline;
  }

  .modus-theme-switch-btn {
    min-width: 4.75rem;
  }
}

.site-header h1 {
  margin: 0;
  font-size: var(--modus-wc-font-size-2xl);
  font-weight: 700;
  line-height: var(--modus-wc-line-height-h3);
}

.site-header .tagline {
  margin: 0;
  font-size: var(--modus-wc-font-size-md);
  color: var(--color-muted);
}

.coverage-note {
  grid-column: 1 / -1;
  grid-row: 2;
  font-size: var(--modus-wc-font-size-sm);
  color: var(--color-muted);
  margin: 0;
}

.mobile-tabs {
  display: none;
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.mobile-tabs button {
  flex: 1;
  min-height: 44px;
  border: none;
  background: transparent;
  color: var(--color-muted);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.mobile-tabs button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(300px, 380px) 1fr;
  flex: 1;
  min-height: 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  padding: var(--space-2);
  border-right: 1px solid var(--color-border);
  background: var(--color-bg);
}

.sidebar-accordion {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-height: 0;
}

.accordion-item {
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.accordion-item.is-open {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  padding: 14px 16px;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  font: inherit;
}

.accordion-trigger:hover {
  background: color-mix(in srgb, var(--color-primary) 5%, var(--color-surface));
}

.accordion-trigger-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-width: 0;
}

.accordion-title {
  font-size: var(--modus-wc-font-size-md);
  font-weight: 700;
}

.accordion-subtitle {
  font-size: var(--modus-wc-font-size-sm);
  font-weight: 400;
  color: var(--color-muted);
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.accordion-item.is-open .accordion-subtitle {
  display: none;
}

.accordion-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.accordion-icon {
  flex-shrink: 0;
  color: var(--color-muted);
  transition: transform 0.2s ease;
}

.accordion-item.is-open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-panel {
  display: none;
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  flex-direction: column;
  padding: 0 16px 16px;
}

.accordion-item.is-open .accordion-panel {
  display: flex;
}

#search-pane .accordion-panel {
  padding-top: 4px;
}

#search-pane .search-form {
  flex-shrink: 0;
}

#results-pane .accordion-panel {
  padding-top: 0;
}

.accordion-panel-toolbar {
  display: flex;
  justify-content: flex-end;
  padding: 0 0 8px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 4px;
}

.map-panel {
  position: relative;
  min-height: 0;
}

#map {
  width: 100%;
  height: 100%;
}

.map-loading-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.35);
  z-index: 1000;
  color: #fff;
  font-weight: 600;
  gap: var(--space-2);
}

.map-loading-overlay.visible {
  display: flex;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.toast-container {
  position: fixed;
  bottom: var(--space-3);
  right: var(--space-3);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  max-width: min(420px, calc(100vw - 32px));
}

.toast {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  animation: slideIn 0.25s ease;
}

.toast.error {
  border-color: var(--color-error);
  color: var(--color-error);
}

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

.about-dialog {
  width: min(520px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-md);
}

.about-dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
}

.about-dialog-inner {
  margin: 0;
}

.about-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.about-dialog-header h2 {
  margin: 0;
  font-size: 1rem;
}

.about-dialog-close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.about-dialog-close:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.about-dialog-body {
  padding: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-muted);
  overflow-y: auto;
}

.about-dialog-body p {
  margin: 0 0 0.75em;
}

.about-dialog-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 767px) {
  body {
    height: auto;
    min-height: 100dvh;
    overflow: auto;
  }

  .mobile-tabs {
    display: flex;
  }

  .app-shell {
    grid-template-columns: 1fr;
    flex: 1;
    min-height: 0;
  }

  .sidebar,
  .map-panel {
    display: none;
  }

  .app-shell.view-search .sidebar,
  .app-shell.view-results .sidebar {
    display: flex;
  }

  .app-shell.view-search .map-panel,
  .app-shell.view-results .map-panel {
    display: none;
  }

  .app-shell.view-map .map-panel {
    display: block;
  }

  .app-shell.view-map .sidebar {
    display: none;
  }

  .accordion-item:not(.is-open) {
    display: none;
  }

  .accordion-item.is-open {
    flex: 1;
    border: none;
    border-radius: 0;
    box-shadow: none;
  }

  .sidebar-accordion {
    gap: 0;
  }

  .sidebar {
    padding: 0;
    background: var(--color-surface);
    border-right: none;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .app-shell {
    grid-template-columns: 320px 1fr;
  }
}