* {
  box-sizing: border-box;
}

:root {
  --bg: #080c12;
  --panel: #131a24;
  --line: #2b3544;
  --txt: #edf3f8;
  --muted: #98a6b8;
  --blue: #58aaff;
  --green: #62e58a;
  --orange: #ffb64b;
  --red: #ff505c;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--txt);
  font: 13px Arial;
}

.app {
  height: 100%;
  display: flex;
}

.stage {
  position: relative;
  flex: 1;
  min-width: 0;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

canvas.dragging {
  cursor: grabbing;
}

.panel {
  width: 420px;
  background: var(--panel);
  border-left: 1px solid var(--line);
  padding: 16px;
  overflow: auto;
}

h1 {
  font-size: 20px;
  margin: 0;
}

.sub {
  color: var(--muted);
  margin: 4px 0 15px;
}

h2 {
  font-size: 12px;
  color: #b9c6d6;
  margin: 18px 0 9px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.field {
  margin: 7px 0;
}

.lab {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  margin-bottom: 4px;
}

.val {
  color: var(--blue);
  font-family: monospace;
}

input[type="range"] {
  width: 100%;
  accent-color: #318ff0;
}

input[type="checkbox"] {
  accent-color: #318ff0;
}

button,
select {
  width: 100%;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #1e2736;
  color: #fff;
  font-weight: 700;
  margin-top: 6px;
  cursor: pointer;
}

button:hover,
select:hover {
  background: #2a374a;
}

button.primary {
  background: #2e8ff0;
  border: 0;
}

button.force {
  background: #a47a20;
  border: 0;
}

.check {
  display: flex;
  gap: 7px;
  align-items: center;
  margin: 7px 0;
  color: #cfd8e3;
  font-size: 12px;
  cursor: pointer;
}

.info {
  background: #090e15;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  font: 11px/1.7 monospace;
  margin-bottom: 10px;
}

.info b {
  color: var(--blue);
  font-weight: 400;
}

.info b.grn {
  color: var(--green);
}

.info b.org {
  color: var(--orange);
}

.info b.red {
  color: var(--red);
}

.note {
  font-size: 10px;
  color: #8795a7;
  line-height: 1.5;
  margin-bottom: 10px;
}

.sec-title {
  color: #7a94b5;
  font-weight: bold;
  margin-top: 8px;
  display: block;
  border-bottom: 1px dashed #202b3a;
  padding-bottom: 2px;
  font-family: Arial;
}

.energy-panel {
  background: #0c121c;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
  margin-bottom: 12px;
}

.meter-wrap {
  display: flex;
  align-items: center;
  font-size: 10px;
  margin: 6px 0;
  font-family: Arial;
}

.meter-label {
  width: 90px;
  color: var(--muted);
}

.meter {
  flex: 1;
  height: 10px;
  background: #1a222e;
  border-radius: 5px;
  overflow: hidden;
  position: relative;
}

.meter > div {
  height: 100%;
  transition: width 0.1s ease-out;
}

.meter-val {
  position: absolute;
  right: 4px;
  top: -1px;
  font-size: 9px;
  line-height: 12px;
  font-family: monospace;
  text-shadow: 1px 1px 0 #000;
  color: #fff;
}

.panel {
  transition: margin-right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  margin-right: 0;
  flex-shrink: 0;
  z-index: 5;
}

.panel.collapsed {
  margin-right: -420px;
  box-shadow: none;
  border-left: none;
}

.toggle-btn {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 60px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-right: none;
  border-radius: 8px 0 0 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  z-index: 10;
  font-size: 12px;
  transition: background 0.2s, transform 0.3s;
}

.toggle-btn:hover {
  background: #1e2736;
  color: #fff;
}

.toggle-btn.flipped {
  transform: translateY(-50%) scaleX(-1);
  background: rgba(19, 26, 36, 0.7);
  border-right: 1px solid var(--line);
}

.copyright {
  position: fixed;
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
  width: max-content;
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
  color: #8fa3b8;
  z-index: 9999;
  pointer-events: none;
  white-space: nowrap;
}