/* Mobile layout:
   present the atlas as a single-column app shell with the map as a
   prominent card near the top and the controls stacked underneath. */

@media (max-width: 900px) {
  html,
  body {
    height: auto !important;
    min-height: 100% !important;
    overflow: auto !important;
    background:
      radial-gradient(circle at top, rgba(37, 99, 235, 0.12), transparent 38%),
      linear-gradient(180deg, #f7fafc 0%, #eef4fb 100%) !important;
  }

  .app {
    width: min(100%, 560px) !important;
    min-height: 100dvh !important;
    height: auto !important;
    margin: 0 auto !important;
    padding: max(10px, env(safe-area-inset-top)) 14px 28px !important;
    gap: 14px !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: auto auto auto !important;
    align-content: start !important;
    overflow: visible !important;
  }

  header {
    position: sticky !important;
    top: max(6px, env(safe-area-inset-top)) !important;
    z-index: 40 !important;
    flex-wrap: wrap !important;
    gap: 10px !important;
    margin: 0 !important;
    padding: 14px !important;
    border-radius: 22px !important;
    border: 1px solid rgba(226, 232, 240, 0.95) !important;
    background: rgba(255, 255, 255, 0.9) !important;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.09) !important;
    backdrop-filter: blur(12px);
  }

  header b {
    display: block !important;
    width: 100% !important;
    font-size: clamp(1.05rem, 4vw, 1.35rem) !important;
    line-height: 1.2 !important;
    white-space: normal !important;
  }

  header .right {
    width: 100% !important;
    margin-left: 0 !important;
    justify-content: space-between !important;
    gap: 8px !important;
  }

  .mobileOnly,
  .sidebarHeader,
  .backdrop {
    display: none !important;
  }

  #map {
    grid-row: 2 !important;
    width: 100% !important;
    height: clamp(320px, 46svh, 460px) !important;
    min-height: 320px !important;
    border-radius: 26px !important;
    border: 1px solid rgba(148, 163, 184, 0.28) !important;
    box-shadow:
      0 24px 48px rgba(37, 99, 235, 0.08),
      0 12px 28px rgba(15, 23, 42, 0.12) !important;
    overflow: hidden !important;
  }

  .leaflet-container {
    border-radius: 26px !important;
  }

  .sidebar {
    grid-row: 3 !important;
    position: static !important;
    transform: none !important;
    width: 100% !important;
    max-height: none !important;
    overflow: visible !important;
    padding: 0 !important;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 12px !important;
  }

  .search,
  .card {
    background: rgba(255, 255, 255, 0.94) !important;
    border: 1px solid rgba(226, 232, 240, 0.96) !important;
    border-radius: 22px !important;
    padding: 15px !important;
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.06) !important;
  }

  .search {
    gap: 10px !important;
  }

  .card {
    margin-top: 0 !important;
  }

  .card b {
    display: block;
    margin-bottom: 4px;
  }

  #results {
    max-height: 220px !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  .search input,
  #results,
  .timelineControl input[type="range"] {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .row {
    gap: 8px !important;
  }

  .pill {
    padding: 6px 10px !important;
    border: 1px solid rgba(226, 232, 240, 0.92) !important;
    border-radius: 999px !important;
    background: rgba(248, 250, 252, 0.94) !important;
  }

  .btn {
    min-height: 40px !important;
    justify-content: center !important;
  }

  .leaflet-control-zoom a {
    width: 34px !important;
    height: 34px !important;
    line-height: 34px !important;
  }

  .leaflet-popup-content-wrapper {
    max-width: min(280px, calc(100vw - 48px)) !important;
  }

  .leaflet-popup-content {
    max-width: min(250px, calc(100vw - 78px)) !important;
    font-size: 13px !important;
    overflow-wrap: break-word;
  }
}

@media (max-width: 540px) {
  header .right {
    flex-wrap: wrap !important;
  }

  header .right .btn {
    flex: 1 1 140px !important;
  }
}

@media (max-width: 480px) {
  .app {
    padding-inline: 12px !important;
    gap: 12px !important;
  }

  header {
    border-radius: 20px !important;
    padding: 12px !important;
  }

  #map {
    height: clamp(280px, 42svh, 400px) !important;
    min-height: 280px !important;
    border-radius: 22px !important;
  }

  .leaflet-container,
  .search,
  .card {
    border-radius: 20px !important;
  }

  .btn {
    font-size: 12px !important;
    padding: 7px 10px !important;
  }
}