html, body { height: 100%; margin: 0; background: #000; color: #fff; font-family: Arial, sans-serif; }
#ui { position: fixed; top: 8px; left: 8px; background: rgba(0,0,0,0.6); padding: 8px; border-radius: 4px; z-index: 10; }

#ui > div { margin-bottom: 5px; }
#tlabel {
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
  vertical-align: middle;
  margin-left: 10px;
}

#ui button.inverted,
#ui button.active-colorway {
  background: #00aaff;
  color: #000;
}

#ui button, #ui input[type="button"] {
  background: transparent;
  border: 1px solid #00aaff;
  color: #00aaff;
  padding: 3px 8px;
  margin: 2px;
  cursor: pointer;
  border-radius: 3px;
  font-family: 'Courier New', Courier, monospace;
  font-weight: bold;
  transition: background 0.2s, color 0.2s;
  vertical-align: middle;
}
#ui button:hover, #ui input[type="button"]:hover {
  background: #00aaff;
  color: #000;
}

#lock-light-btn {
  width: 160px; /* Fixed width to prevent resize on text change */
  text-align: left;
  white-space: nowrap;
}

#time-box {
  display: inline-block;
  border: 1px solid #00aaff;
  border-radius: 3px;
  padding: 4px;
  vertical-align: middle;
}
#time-box:hover {
  border-color: #fff;
}
#time-box input[type="datetime-local"] {
  border: none;
  padding: 0;
  margin: 0;
  background: transparent;
  color: #fff;
  font-family: 'Courier New', Courier, monospace;
}

input[type=range] {
  -webkit-appearance: none;
  background: transparent;
  width: 150px;
  margin: 1px 0;
  vertical-align: middle;
}
input[type=range]:focus {
  outline: none;
}

/* Webkit */
input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 12px;
  cursor: pointer;
  background: linear-gradient(to right, #005588 0%, #005588 var(--value-percent, 0%), rgba(0, 50, 80, 0.5) var(--value-percent, 0%), rgba(0, 50, 80, 0.5) 100%);
  border-radius: 2px;
  border: 1px solid #00aaff;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  border: 1px solid #00aaff;
  height: 12px;
  width: 6px;
  border-radius: 1px;
  background: #00aaff;
  cursor: pointer;
  margin-top: -1px;
}

/* Firefox */
input[type=range]::-moz-range-track {
  width: 100%;
  height: 12px;
  cursor: pointer;
  background: linear-gradient(to right, #005588 0%, #005588 var(--value-percent, 0%), rgba(0, 50, 80, 0.5) var(--value-percent, 0%), rgba(0, 50, 80, 0.5) 100%);
  border-radius: 2px;
  border: 1px solid #00aaff;
}

input[type=range]::-moz-range-thumb {
  border: 1px solid #00aaff;
  height: 12px;
  width: 6px;
  border-radius: 1px;
  background: #00aaff;
  cursor: pointer;
}

#ui input[type="datetime-local"], #ui input[type="text"] {
  background: transparent;
  border: 1px solid #00aaff;
  color: #fff;
  padding: 4px;
  border-radius: 3px;
  font-family: 'Courier New', Courier, monospace;
}
 
#ui label {
  display: block;
  margin: 2px 0;
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
}

.slider-label {
  display: inline-block;
  width: 45px;
  text-align: left;
  margin-right: 2px;
}

#invert-btn {
  width: 100%;
  padding-top: 1px;
  padding-bottom: 1px;
  letter-spacing: 2px;
  transform: scaleY(0.8);
}

.button-row {
  display: flex;
}

.button-row button {
  flex: 1;
  margin: 1px;
  white-space: nowrap;
}

.button-row button.ghost {
  visibility: hidden;
}

#digital-land-options button, #oceanic-land-options button {
  padding: 2px 6px;
  font-size: 12px;
}

#controls-container {
  display: inline-block;
}

#graph-container {
  position: fixed;
  top: 8px;
  right: 8px;
  width: 560px;
  height: 520px;
  background: rgba(0,0,0,0.75);
  border: 1px solid #00aaff;
  border-radius: 4px;
  z-index: 20;
  display: none; /* Initially hidden */
  font-family: 'Courier New', Courier, monospace;
}

/* Mobile-specific styling for graph container */
@media (max-width: 768px) {
  #graph-container {
    top: auto;
    bottom: 8px;
    right: 8px;
    left: 8px;
    width: auto;
    height: 60vh; /* Use 60% of viewport height for scrollable area */
    overflow-y: auto; /* Enable vertical scrolling */
    overflow-x: hidden; /* Prevent horizontal scrolling */
  }
  #tidal-graph {
    min-height: 520px; /* Ensure graph maintains its natural height */
  }
  
  /* Hide style controls and exaggeration slider when graph is open on mobile */
  .graph-open #controls-container {
    display: none;
  }
  .graph-open #exag {
    display: none;
  }
  .graph-open label[for="exag"] {
    display: none;
  }
  /* Hide the "Exag" label text */
  .graph-open label:has(#exag) {
    display: none;
  }
  
  /* Make UI container auto-resize when controls are hidden */
  #ui {
    transition: all 0.3s ease;
  }
  .graph-open #ui {
    /* Let the container shrink to fit its remaining content */
  }
}
#graph-container.visible {
  display: block;
}
#tidal-graph {
  width: 100%;
  height: 100%;
}
#graph-info {
  position: absolute;
  top: 8px;
  left: 8px;
  color: #fff;
  font-size: 12px;
  pointer-events: none;
}
#close-graph-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  background: transparent;
  border: 1px solid #00aaff;
  color: #00aaff;
  cursor: pointer;
  padding: 0px 4px 1px 4px;
  font-size: 14px;
  line-height: 1;
  border-radius: 2px;
}
#close-graph-btn:hover {
  background: #00aaff;
  color: #000;
}