body, html {
  margin: 0;
  padding: 0;
  height: 100%;
}

#map {
  position: absolute;
  top: 0px;
  bottom: 0;
  width: 100%;
}

#topbar {
  position: relative;
  z-index: 1000;
  height: 5%;
  backdrop-filter: blur(8px);
  background-color: rgba(7, 59, 178, 0.75); /* same dark navy but translucent */
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

#topbar h1 {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.5px;
}

#filters {
  position: absolute;
  top: 70px; /* below topbar */
  right: 20px;
  background: rgba(255, 255, 255, 0.2);  /* ⬅️ semi-transparent white */  
  backdrop-filter: blur(5px);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
  z-index: 1000;
  width: 200px;
}

#filters h3 {
  margin-top: 0;
  font-size: 16px;
  margin-bottom: 10px;
}

#filters label {
  display: block;
  margin-top: 10px;
  font-weight: normal;
  font-size: 14px;
}

#filters select, #filters button {
  width: 100%;
  margin-top: 4px;
  padding: 6px;
  font-size: 14px;
  border-radius: 4px;
  border: 1px solid #000000;
  font-size: 14px;
}

.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.filter-row label {
  font-weight: bold;
  margin: 0;
  white-space: nowrap;
  display: flex;
  align-items: center;
  height: 100%;
  color: #000000; /* make label text white too */
}

.filter-row select {
  background-color: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(5px);
  border: 2px solid rgb(0, 0, 0);
  color: #000000;
  padding: 6px;
  font-size: 14px;
  border-radius: 4px;
  flex-grow: 1;
}