:root {
  --bg: #0f172a;
  --panel: #ffffffee;
  --ink: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --border: #e2e8f0;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
}

#map {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: #aadaff;
}

#panel {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1000;
  width: 290px;
  max-width: calc(100vw - 24px);
  max-height: calc(100vh - 24px);
  overflow-y: auto;
  background: var(--panel);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.18);
  padding: 16px 16px 12px;
}

#panel header h1 {
  font-size: 1.05rem;
  margin: 0;
}

#panel header .sub {
  margin: 2px 0 0;
  font-size: 0.78rem;
  color: var(--muted);
}

#panel header {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
#panel .header-text { min-width: 0; }

#panel-toggle {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
}
#panel-toggle:hover { border-color: var(--accent); }

/* Estado recolhido: só o cabeçalho (título + botão) fica visível. */
#panel.collapsed {
  width: auto;
  max-width: calc(100vw - 16px);
  padding-bottom: 12px;
}
#panel.collapsed > *:not(header) { display: none; }
#panel.collapsed .sub { display: none; }

.block { margin-top: 14px; }

.block-title {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 6px;
}

.btn-row { display: flex; gap: 6px; flex-wrap: wrap; }

.btn-row button {
  flex: 1 1 auto;
  min-width: 56px;
  padding: 7px 4px;
  font-size: 0.82rem;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  transition: all 0.12s ease;
}

.btn-row button:hover { border-color: var(--accent); }

.btn-row button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.chk {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  margin: 4px 0;
  cursor: pointer;
}

#legend { display: flex; flex-direction: column; gap: 3px; }

.legend-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
}

.legend-swatch {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  flex: 0 0 auto;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 10px;
  font-size: 0.82rem;
}

.stats .k { color: var(--muted); }
.stats .v { font-weight: 600; text-align: right; }

#panel footer {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--muted);
}

#panel footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

#data-source { line-height: 1.3; }

#loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1500;
  background: #0f172acc;
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.9rem;
}

.popup table { border-collapse: collapse; font-size: 0.8rem; }
.popup td { padding: 1px 6px 1px 0; }
.popup td.k { color: var(--muted); }
.popup b { font-size: 0.86rem; }

@media (max-width: 640px) {
  #panel {
    width: calc(100vw - 16px);
    left: 8px;
    top: 8px;
    max-height: calc(100vh - 16px);  /* cabe sempre no ecrã; conteúdo compacto p/ não precisar de scroll */
    padding: 10px 12px;
  }
  #panel.collapsed { max-height: none; }   /* recolhido = só a barra do título */
  #panel header h1 { font-size: 1rem; }
  #panel header .sub { font-size: 0.72rem; }
  .block { margin-top: 8px; }
  .block-title { margin-bottom: 4px; }
  .btn-row { gap: 5px; }
  .btn-row button { padding: 7px 4px; font-size: 0.84rem; }
  .chk { font-size: 0.86rem; margin: 2px 0; }
  #legend { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 10px; } /* legenda em 2 colunas */
  .legend-row { font-size: 0.74rem; }
  .legend-swatch { width: 13px; height: 13px; }
  .stats { font-size: 0.8rem; gap: 4px 10px; }
  #panel footer { margin-top: 8px; padding-top: 7px; }
  .leaflet-control-zoom { display: none; }  /* no telemóvel usa-se pinça p/ zoom */
}