:root {
    color-scheme: light;
    --surface-1:      #fffaf1;
    --surface-2:      #fff4e0;
    --text-primary:   #2a1c10;
    --text-secondary: #6b5642;
    --muted:          #a08a6f;
    --gridline:       #f0ddb8;
    --border:         rgba(42,28,16,0.12);
    --good:           #2f7a8c;
    --warning:        #ffb84d;
    --serious:        #e8631c;
    --critical:       #c9622f;
    --dusk:           #16232e;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      color-scheme: dark;
      --surface-1:      #1e2530;
      --surface-2:      #16232e;
      --text-primary:   #fef2de;
      --text-secondary: #c7b8a0;
      --muted:          #8b7d6a;
      --gridline:       #2e3947;
      --border:         rgba(254,242,222,0.12);
    }
  }
  :root[data-theme="dark"] {
    color-scheme: dark;
    --surface-1:      #1e2530;
    --surface-2:      #16232e;
    --text-primary:   #fef2de;
    --text-secondary: #c7b8a0;
    --muted:          #8b7d6a;
    --gridline:       #2e3947;
    --border:         rgba(254,242,222,0.12);
  }

  * { box-sizing: border-box; }

  html, body {
    background: var(--surface-2);
    color: var(--text-primary);
    margin: 0;
  }

  .viz-root {
    font-family: "Trebuchet MS", "Century Gothic", Verdana, sans-serif;
    color: var(--text-primary);
    background: var(--surface-2);
    padding: 20px 16px 48px;
    max-width: 980px;
    margin: 10px auto;
  }

  h1 { font-weight: 800; font-size: 21px; letter-spacing: -.01em; margin: 0 0 4px; }
  .subtitle { color: var(--text-secondary); font-size: 13px; margin: 0 0 4px; line-height: 1.5; font-style: italic; }
  .caveat {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 14px;
    font-size: 12.5px;
    color: var(--text-secondary);
    margin: 14px 0 20px;
    line-height: 1.55;
  }
  .caveat b { color: var(--text-primary); }

  .card {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 16px;
  }
  .card h2 {
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--serious);
    margin: 0 0 12px;
  }

  /* summary bars */
  .summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .summary-day { }
  .summary-day .daylabel { font-size: 12px; color: var(--text-secondary); margin-bottom: 8px; }
  .bar-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
  .bar-row .lbl { font-size: 11.5px; color: var(--text-secondary); width: 66px; flex: none; display:flex; align-items:center; gap:5px;}
  .swatch { width: 10px; height: 10px; border-radius: 2px; flex: none; }
  .bar-track { flex: 1; height: 10px; background: var(--gridline); border-radius: 3px; overflow: hidden; }
  .bar-fill { height: 100%; border-radius: 3px; }
  .bar-count { font-size: 11.5px; color: var(--text-primary); width: 30px; text-align: right; font-variant-numeric: tabular-nums; }

  /* legend */
  .legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-secondary); margin-top: 4px;}
  .legend .item { display: flex; align-items: center; gap: 6px; }

  /* KPI in cima + toggle vista */
  .kpi-top-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
  }
  .kpi-mini {
    margin-bottom: 0;
    padding: 12px 16px;
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 8px 10px;
  }
  .kpi-mini h2 { margin: 0; flex: none; }
  .kpi-number {
    font-size: 24px;
    font-weight: 800;
    color: var(--serious);
    line-height: 1;
    font-variant-numeric: tabular-nums;
  }
  .kpi-sub { font-size: 12.5px; color: var(--text-secondary); margin-top: 0; }
  .view-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
  }
  .view-toggle input { accent-color: var(--serious); width: 16px; height: 16px; cursor: pointer; }

  /* filtro per livello (chip) */
  .level-filter { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
  .level-chip {
    font-family: inherit;
    font-size: 11.5px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text-secondary);
    cursor: pointer;
  }
  .level-chip:hover { color: var(--text-primary); }
  .level-chip.basso.active     { background: color-mix(in srgb, var(--good) 24%, transparent); color: #266270; border-color: var(--good); }
  .level-chip.moderato.active  { background: color-mix(in srgb, var(--warning) 30%, transparent); color: #8a5c00; border-color: var(--warning); }
  .level-chip.alto.active      { background: color-mix(in srgb, var(--serious) 28%, transparent); color: #9c3a12; border-color: var(--serious); }
  .level-chip.emergenza.active { background: color-mix(in srgb, var(--critical) 32%, transparent); color: #7a2e0e; border-color: var(--critical); }

  /* chip filtro attivi (provincia + livello) */
  .active-filters { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 10px; }
  .active-filters[hidden] { display: none; }
  .active-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: inherit;
    font-size: 11.5px;
    font-weight: 700;
    padding: 4px 8px 4px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text-secondary);
    cursor: pointer;
  }
  .active-filter-chip:hover { color: var(--text-primary); border-color: var(--muted); }
  .active-filter-chip .remove-x {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--text-secondary) 18%, transparent);
    font-size: 12px;
    line-height: 1;
  }
  .active-filter-chip:hover .remove-x { background: color-mix(in srgb, var(--serious) 30%, transparent); color: var(--serious); }
  .active-filters-clear {
    font-size: 11.5px;
    font-weight: 600;
    color: var(--muted);
    background: none;
    border: none;
    text-decoration: underline;
    cursor: pointer;
    padding: 4px 2px;
  }
  .active-filters-clear:hover { color: var(--text-primary); }

  /* vista raggruppata per provincia */
  .grouped-view { display: flex; flex-direction: column; gap: 10px; }
  .grouped-view[hidden] { display: none; }
  .prov-group {
    border: 1px solid var(--gridline);
    border-radius: 14px;
    overflow: hidden;
  }
  .prov-group-header {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: inherit;
    background: var(--surface-2);
    border: none;
    padding: 10px 12px;
    cursor: pointer;
    text-align: left;
    color: var(--text-primary);
  }
  .prov-group-header:hover { background: color-mix(in srgb, var(--serious) 8%, var(--surface-2)); }
  .prov-group-meta { font-size: 12px; color: var(--text-secondary); flex: 1; }
  .chevron { font-size: 11px; color: var(--muted); transition: transform .15s; }
  .prov-group.collapsed .chevron { transform: rotate(-90deg); }
  .prov-group-preview { display: none; }
  .prov-group.collapsed .prov-group-preview { display: block; }
  .prov-group.collapsed .prov-group-body { display: none; }
  .prov-group-preview .table-wrap,
  .prov-group-body .table-wrap { max-height: none; border: none; border-radius: 0; }
  .prov-group-preview table,
  .prov-group-body table { border-top: 1px solid var(--gridline); }
  .prov-group-more {
    padding: 8px 12px;
    font-size: 11.5px;
    color: var(--text-secondary);
    border-top: 1px solid var(--gridline);
    background: var(--surface-2);
  }

  /* controls */
  .controls { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
  .controls input, .controls select {
    font-family: inherit;
    font-size: 13px;
    padding: 7px 10px;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text-primary);
  }
  .controls input { flex: 1; min-width: 160px; }
  .search-wrap { position: relative; flex: 1; min-width: 160px; display: flex; }
  .search-wrap input { width: 100%; padding-right: 28px; }
  .search-clear {
    position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
    width: 20px; height: 20px; border: none; background: none; cursor: pointer;
    color: var(--muted); font-size: 15px; line-height: 1; border-radius: 50%;
    display: none; align-items: center; justify-content: center;
  }
  .search-clear:hover { color: var(--text-primary); background: var(--gridline); }
  .search-wrap.has-value .search-clear { display: flex; }
  .count-note { font-size: 12px; color: var(--muted); margin-bottom: 10px; }

  .empty-state {
    text-align: center;
    padding: 48px 16px;
    border: 1px dashed var(--border);
    border-radius: 10px;
    background: var(--surface-1);
  }
  .empty-state-icon { font-size: 28px; opacity: 0.6; margin-bottom: 8px; }
  .empty-state-title { font-size: 15px; font-weight: 600; color: var(--text-primary); margin: 0 0 4px; }
  .empty-state-sub { font-size: 13px; color: var(--muted); margin: 0 0 16px; }
  .empty-state-reset {
    font-family: inherit;
    font-size: 12.5px;
    padding: 6px 14px;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    color: var(--text-primary);
    cursor: pointer;
  }
  .empty-state-reset:hover { background: var(--gridline); }

  .theme-toggle {
    font-family: inherit;
    font-size: 12.5px;
    padding: 6px 12px;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--surface-1);
    color: var(--text-primary);
    cursor: pointer;
  }
  .theme-toggle:hover { background: var(--gridline); }

  .back-to-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--surface-1);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    z-index: 10;
  }
  .back-to-top.visible { display: flex; }
  .back-to-top:hover { background: var(--gridline); }
  .header-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .header-row > div { flex: 1; }

  /* geolocalizzazione: "il mio comune" */
  .locate-row { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap;     margin-top: 10px;}
  .locate-btn {
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--surface-1);
    color: var(--text-primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .locate-btn:hover { background: var(--gridline); }
  .locate-btn:disabled { opacity: .6; cursor: wait; }
  .locate-status { font-size: 12.5px; color: var(--text-secondary); }

  .my-comune-card { margin-bottom: 14px; }
  .my-comune-card[hidden] { display: none; }

  @keyframes row-highlight-pulse {
    0%   { background: color-mix(in srgb, var(--serious) 35%, transparent); }
    100% { background: transparent; }
  }
  tr.row-highlight { animation: row-highlight-pulse 2.4s ease-out; }
  .logo-link { flex: none; }
  .logo-link img { height: 60px; width: auto; display: block; }

  /* table */
  .table-wrap,
  .grouped-view {
    transition: opacity 180ms ease;
  }
  .table-wrap.is-updating,
  .grouped-view.is-updating {
    opacity: 0;
  }
  @media (prefers-reduced-motion: reduce) {
    .table-wrap,
    .grouped-view {
      transition: none;
    }
  }
  .table-wrap {
    position: relative;
    max-height: 560px;
    overflow-y: auto;
    overflow-x: auto;
    border: 1px solid var(--gridline);
    border-radius: 14px;
  }
  .table-wrap::before,
  .table-wrap::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    width: 18px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 160ms ease;
    z-index: 2;
  }
  .table-wrap::before {
    left: 0;
    background: linear-gradient(to right, color-mix(in srgb, var(--surface-1) 85%, transparent), transparent);
  }
  .table-wrap::after {
    right: 0;
    background: linear-gradient(to left, color-mix(in srgb, var(--surface-1) 85%, transparent), transparent);
  }
  .table-wrap.can-scroll-left::before { opacity: 1; }
  .table-wrap.can-scroll-right::after { opacity: 1; }
  @media (prefers-reduced-motion: reduce) {
    .table-wrap::before,
    .table-wrap::after {
      transition: none;
    }
  }
  table { width: 100%; border-collapse: collapse; font-size: 13px; table-layout: fixed; }
  th:nth-child(1), td:nth-child(1) { width: 38%; }
  th:nth-child(2), td:nth-child(2) { width: 14%; }
  th:nth-child(3), td:nth-child(3) { width: 22%; }
  th:nth-child(4), td:nth-child(4) { width: 26%; }
  thead th {
    position: sticky; top: 0;
    background: var(--surface-1);
    text-align: left;
    padding: 8px 10px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--muted);
    border-bottom: 1px solid var(--gridline);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
  }
  thead th:hover { color: var(--serious); }
  thead th[data-key]::after { content: " ⇅"; font-size: 8.5px; opacity: .45; }
  thead th.sorted::after { content: " ▾"; font-size: 9px; opacity: 1; color: var(--serious); }
  tbody td {
    padding: 6px 10px;
    border-bottom: 1px solid var(--gridline);
    white-space: nowrap;
    color: var(--text-primary);
  }
  tbody tr:hover td { background: var(--surface-2); }
  .share-btn {
    border: none;
    background: none;
    cursor: pointer;
    font-size: 11px;
    line-height: 1;
    padding: 2px 4px;
    border-radius: 4px;
    opacity: 0;
    vertical-align: middle;
  }
  tr:hover .share-btn, .share-btn:focus-visible { opacity: .55; }
  .share-btn:hover { opacity: 1; background: var(--gridline); }
  .prov-badge {
    font-size: 10.5px;
    color: var(--text-secondary);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 1px 7px;
  }
  .cell {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 9px 2px 7px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 700;
    color: #1a1400;
  }
  .cell .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; box-shadow: 0 0 5px 0 currentColor; }
  .cell.basso    { background: color-mix(in srgb, var(--good) 20%, transparent); color: #266270; }
  .cell.moderato { background: color-mix(in srgb, var(--warning) 28%, transparent); color: #8a5c00; }
  .cell.alto     { background: color-mix(in srgb, var(--serious) 26%, transparent); color: #9c3a12; }
  .cell.emergenza{ background: color-mix(in srgb, var(--critical) 30%, transparent); color: #7a2e0e; }
  :root[data-theme="dark"] .cell.moderato { color: #ffcf6b; }
  :root[data-theme="dark"] .cell.alto { color: #ffab84; }
  :root[data-theme="dark"] .cell.emergenza { color: #ffb199; }
  @media (prefers-color-scheme: dark) {
    :root:where(:not([data-theme="light"])) .cell.moderato { color: #ffcf6b; }
    :root:where(:not([data-theme="light"])) .cell.alto { color: #ffab84; }
    :root:where(:not([data-theme="light"])) .cell.emergenza { color: #ffb199; }
  }
  .cell.basso .dot { background: var(--good); }
  .cell.moderato .dot { background: var(--warning); }
  .cell.alto .dot { background: var(--serious); }
  .cell.emergenza .dot { background: var(--critical); }

  tr.row-emergenza { box-shadow: inset 3px 0 0 var(--critical); background: color-mix(in srgb, var(--critical) 7%, transparent); }
  .emergenza-badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 10px;
    font-weight: 700;
    color: #7a2e0e;
    background: color-mix(in srgb, var(--critical) 30%, transparent);
    border: 1px solid var(--critical);
    border-radius: 20px;
    padding: 1px 7px;
  }
  :root[data-theme="dark"] .emergenza-badge { color: #ffb199; }
  @media (prefers-color-scheme: dark) {
    :root:where(:not([data-theme="light"])) .emergenza-badge { color: #ffb199; }
  }

  thead th.trend-th { cursor: default; }
  .trend { display: inline-flex; align-items: center; }
  .trend-dot { width: 11px; height: 11px; border-radius: 50%; flex: none; box-shadow: 0 0 5px 0 currentColor; }
  .trend-line { width: 16px; height: 2px; background: var(--gridline); flex: none; }

  footer { font-size: 11.5px; color: var(--muted); margin-top: 18px; line-height: 1.6; }
  footer a { color: inherit; }
  .freshness-badge {
    display: inline-block;
    font-size: 10.5px;
    font-weight: 600;
    padding: 1px 7px;
    border-radius: 20px;
    background: color-mix(in srgb, var(--good) 16%, transparent);
    color: var(--good);
    border: 1px solid color-mix(in srgb, var(--good) 40%, transparent);
    vertical-align: middle;
  }
  .footer-logo { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 10px; flex-wrap: nowrap; }
  .footer-logo img { height: 32px; width: auto; display: block; flex: none; }
  .footer-logo span { flex: 1 1 auto; min-width: 0; }

  .law-banner {
    background: linear-gradient(135deg, color-mix(in srgb, var(--serious) 14%, var(--surface-1)), var(--surface-1));
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px 16px;
    margin-top: 18px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
	margin-bottom: 20px;
	
  }
  .law-banner .law-title {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 16px;
    font-weight: 800;
    color: var(--serious);
    margin-bottom: 6px;
  }
  .law-banner a { color: var(--text-primary); font-weight: 700; text-decoration: underline; text-decoration-color: var(--serious); }
  .law-banner a:hover { text-decoration-color: currentColor; }

  .methodology-disclaimer { margin-top: 12px; }
  .methodology-header { justify-content: space-between; font-weight: 700; font-size: 13px; }
  .methodology-body {
    padding: 14px 16px;
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--text-secondary);
    background: var(--surface-1);
  }
  .methodology-body h3 { font-size: 13px; color: var(--text-primary); margin: 16px 0 6px; }
  .methodology-body h3:first-child { margin-top: 0; }
  .methodology-body p { margin: 0 0 10px; }
  .methodology-body ul { margin: 0 0 10px; padding-left: 20px; }
  .methodology-body li { margin-bottom: 6px; }
  .methodology-body a { color: var(--text-primary); font-weight: 700; text-decoration: underline; }
  .methodology-body code { background: var(--surface-2); border-radius: 4px; padding: 1px 5px; font-size: 11.5px; }

  @media (max-width: 640px) {
    .viz-root { padding: 14px 10px 32px; }
    .header-row { flex-wrap: wrap; row-gap: 8px; }
    .header-row > div { order: 2; flex: 1 1 100%; }
    .logo-link { order: 1; }
    .theme-toggle { order: 3; margin-left: auto; }
    .controls { flex-direction: column; }
    .controls input, .controls select { width: 100%; min-width: 0; }
    .search-wrap { min-width: 0; }
    .search-clear { width: 28px; height: 28px; }
    .theme-toggle { padding: 9px 14px; }
    .table-wrap { -webkit-overflow-scrolling: touch; }
    table { min-width: 480px; }
    .footer-logo { flex-wrap: wrap; }
    .kpi-top-row { grid-template-columns: 1fr; }
  }

  @media (max-width: 480px) {
    .summary-grid { grid-template-columns: 1fr; }
  }