:root {
  --green: #00ff00;
  --green-dim: rgba(0, 255, 0, 0.35);
  --green-faint: rgba(0, 255, 0, 0.12);
  --green-muted: rgba(0, 255, 0, 0.65);
  --bg-dark: #0a0a0a;
  --bg-panel: #0f0f0f;
  --bg-section: #131313;
  --bg-input: #111;
  --border: #1e1e1e;
  --text: #e6e6e6;
  --text-dim: #dfdfdf;
  --font-mono: 'Courier New', Courier, monospace;
  --fs-sm: 90%;
  --fs-base: 100%;
  --fs-label: 80%;
  --pad: 10px;
  --panel-width: 95%;
  --handle-width: 5%;
  --transition: 0.5s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: var(--bg-dark);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--fs-base);
  overflow: hidden;
}

#appShell {
  display: flex;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

#formPanel {
  width: var(--panel-width);
  min-width: var(--panel-width);
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  transition: width var(--transition), min-width var(--transition);
  overflow: hidden;
  flex-shrink: 0;
}

#formPanel.collapsed {
  width: 0;
  min-width: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--pad) 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-dark);
  flex-shrink: 0;
}

.panel-title {
  color: var(--green);
  font-size: var(--fs-base);
  font-weight: bold;
  letter-spacing: 2px;
  text-transform: uppercase;
}

#formContent {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--pad);
  scrollbar-width: thin;
  scrollbar-color: var(--green-dim) transparent;
}

#formContent::-webkit-scrollbar {
  width: 4px;
}

#formContent::-webkit-scrollbar-thumb {
  background: var(--green-dim);
  border-radius: 2px;
}

#formContent::-webkit-scrollbar-track {
  background: transparent;
}

.form-section {
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: var(--pad) 12px;
  margin-bottom: var(--pad);
}

.form-section:last-child {
  margin-bottom: 0;
}

.section-label {
  color: var(--green);
  font-size: var(--fs-label);
  font-weight: bold;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--green-faint);
}

.field-label,
.status-text {
  color: var(--text-dim);
  font-size: var(--fs-sm);
  white-space: nowrap;
  margin-bottom: 0;
  line-height: 1;
}

.cyber-input {
  background: var(--bg-input) !important;
  color: var(--text) !important;
  border: 1px solid var(--border) !important;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

.cyber-input:focus {
  border-color: var(--green-dim) !important;
  outline: none;
}

.cyber-input::placeholder {
  color: var(--text-dim);
}

.tasks-log {
  height: 140px;
  resize: vertical;
}

.volume-input {
  width: 70px;
}

#viewportHandle {
  width: var(--handle-width);
  min-width: var(--handle-width);
  background: var(--bg-dark);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 20;
}

.handle-btn {
  writing-mode: vertical-rl;
  padding: 12px 4px !important;
  border-radius: 3px;
  line-height: 1;
}

#viewportPanel {
  flex: 1;
  position: relative;
  background: #000;
  overflow: hidden;
  width: 0;
  min-width: 0;
  max-width: 0;
  transition: max-width var(--transition), min-width var(--transition);
}

#viewportPanel.open {
  min-width: 0;
  max-width: 100%;
}

#canvasWrap {
  position: absolute;
  inset: 0;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  transform: rotate(180deg);
}

.hud-panel {
  background: rgba(0, 0, 0, 0.82);
  border: 1px solid var(--green-dim);
  border-radius: 4px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: bold;
}

.hud-btn {
  background: rgba(0, 0, 0, 0.82);
  border: 1px solid var(--green-dim);
  border-radius: 4px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: bold;
  padding: 4px var(--pad);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition), color var(--transition);
  line-height: 1.4;
}

.hud-btn:hover {
  background: rgba(0, 40, 0, 0.9);
  color: #80ff80;
}

.icon-btn {
  padding: 2px 8px;
}

#overlay {
  position: absolute;
  top: var(--pad);
  left: var(--pad);
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 6px var(--pad);
  line-height: 1.4;
  pointer-events: none;
  user-select: none;
}

#settings {
  position: absolute;
  top: var(--pad);
  right: var(--pad);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

#settingsPanel {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--pad) 12px;
  min-width: 200px;
}

#settingsPanel.open {
  display: flex;
}

#settingsPanel label {
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-sm);
  margin-bottom: -2px;
  color: var(--text);
}

#settingsPanel label span {
  color: var(--green-muted);
}

#settingsPanel input[type="range"] {
  width: 100%;
  accent-color: var(--green);
  cursor: pointer;
}

#settingsReset {
  padding: 4px 8px;
}