html, body {height: 100%; margin: 0; font-family: Arial, sans-serif;}
/* Map now sits below header */
#map {
  position: absolute;
  top: 48px;   /* equal/greater than header height */
  left: 0;
  right: 0;
  bottom: 0;
}

/* Heading */
#titleBar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  background: #2c7fb8;
  color: #fff;
  text-align: center;
  padding: 8px 0;
  z-index: 1100;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
#titleBar h1 {margin: 0; font-size: 20px; letter-spacing: 0.5px;}

/* Shift Leaflet's default controls downward to clear header */
.leaflet-top {
  top: 60px !important;
}

/* Control Panel */
#controls {
  position: absolute;
  top: 80px; /* below header */
  right: 10px;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  padding: 12px;
  max-width: 280px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.4);
}
#controls h3 {margin: 8px 0 4px;}
#controls button {
  display: block;
  width: 100%;
  margin-bottom: 6px;
  padding: 6px;
  border: none;
  border-radius: 4px;
  background: #2c7fb8;
  color: #fff;
  cursor: pointer;
  font-size: 14px;
}
#controls button:hover {background: #1d5d8a;}

#controls input[type=range] {
  width: 100%;
  margin: 6px 0 12px;
}

#measurement, #info {
  font-size: 12px;
  margin-top: 6px;
  line-height: 1.4em;
  max-height: 180px;
  overflow: auto;
}
table {width: 100%; border-collapse: collapse;}
td {border-bottom: 1px solid #ddd; padding: 2px 4px;}