/* Solarized Dark Theme Base */
:root {
  --base03:    #002b36; /* background */
  --base02:    #073642; /* background highlights */

  --base01:    #586e75; /* comments / secondary content */
  --base00:    #657b83;
  --base0:     #839496; /* body text / primary content */
  --base1:     #93a1a1;

  --base2:     #eee8d5; /* light bg (avoid) */
  --base3:     #fdf6e3;

  /* Warning */
  --green:     #859900;
  --yellow:    #b58900;
  --orange:    #cb4b16;

  /* Danger */
  --red:       #dc322f;
  --magenta:   #d33682;

  /* Info */
  --violet:    #6c71c4;
  --blue:      #268bd2;

  /* Success */
  --cyan:      #2aa198;

  --background: var(--base03);
  --background-highlight: var(--base02);
  --text: var(--base0);
  --muted: var(--base01);
  --accent: var(--cyan);
  --primary: var(--violet);
  --selected: var(--blue);
  --hover: var(--violet);
  --border: var(--base01, #586e75);
  --focus-ring: var(--blue, #268bd2);
}

/* General Resets */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 20px;
  font-family: 'Courier New', monospace;
  overflow: hidden;
  background-color: var(--background);
  color: var(--text);
  cursor: default;
}

/* Layout Containers */
.container, #container {
  width: 100vw;
  height: 100vh;
  position: relative;
  display: flex;
  flex-direction: column;
}

/* SVG Canvas */
#svg-canvas,
.svg-container {
  width: 100%;
  height: 100%;
  display: block;
  border: 1px solid #333;
  overflow: hidden;
  background: #111;
  cursor: grab;
  touch-action: none;
}
#svg-canvas:active,
svg:active {
  cursor: grabbing;
}

/* Floating Panels */
#toolbox {
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--base02);
  border: 2px solid var(--base03);
  border-radius: 8px;
  padding: 0.25rem;
  columns: 2;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  color: var(--text);
}

/* Toolbox Buttons */
.tool {
  padding: 0.2rem 0.3rem;
  margin-bottom: 8px;
  border: 2px solid var(--base01);
  background: var(--base03);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s ease;
}
.tool:hover {
  background: var(--base02);
}
.tool.active {
  border-color: var(--primary);
  color: var(--selected);
}

/* Agent Chooser Panel */
#agent-chooser {
  position: absolute;
  bottom: 20px;
  left: 20px;
  min-width: 128px;
  background: var(--base02);
  border: 2px solid var(--base03);
  border-radius: 8px;
  padding: 1rem;
  gap: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  z-index: 1000;
  color: var(--text);
  font-weight: bold;
}
#agent-chooser h3 {
  padding-bottom: 1rem;
  margin: 0;
}
#agent-chooser .agent-item {
  cursor: grab;
}
#agent-chooser .agent-item:not(:last-child) {
  padding-bottom: 0.3rem;
}
#agent-chooser .agent-item:hover {
  color: var(--hover);
}

/* Grid */
.grid-layer {
  pointer-events: none;
}
.grid-line {
  stroke: var(--base01);
  stroke-width: 0.5;
  opacity: 0.4;
  pointer-events: none;
}
.grid-line-major,
.grid-major {
  stroke: var(--base00, #555);
  stroke-width: 1.5;
  opacity: 0.6;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
}
.grid-background {
  fill: var(--background);
  pointer-events: none;
}
.grid-label {
  fill: #888;
  font-size: 10px;
  font-family: 'Courier New', monospace;
  text-anchor: middle;
  dominant-baseline: middle;
}

/* Axis and Origin */
.axis {
  stroke: #777;
  stroke-width: 2;
}
.origin {
  fill: #ff6b6b;
  stroke: #fff;
  stroke-width: 1;
}

/* Stations */
.station {
  cursor: pointer;
}
.station-circle {
  fill: var(--base03);
  stroke: var(--text);
  stroke-width: 3;
}
.station-circle.selected {
  fill: var(--primary);
  stroke: var(--blue);
}
.station-port {
  fill: var(--primary);
  stroke: var(--blue);
}

.station-label {
  font-size: 12px;
}


/* Controls and Info */
.header {
  padding: 10px 0;
  margin-bottom: 20px;
}
.controls {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}
.info {
  font-size: 12px;
  color: #888;
  display: flex;
  gap: 20px;
}

/* General Form Elements */
input, select, textarea {
  background: var(--base03);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px;
  border-radius: 4px;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--focus-ring);
  outline-offset: 1px;
}

/* Button */
button {
  background: var(--base02);
  border: 1px solid var(--border);
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 4px;
  font-family: inherit;
  color: var(--text);
  transition: background 0.2s;
}
button:hover {
  background: var(--base03);
}