/* controls.css — Phase 3: Knob, slider, toggle, dropdown, panel component styles */

/* ============================================================
   Rotary Knob
   ============================================================ */

.knob-container {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  min-width: 56px;
  cursor: ns-resize;
  user-select: none;
}

.knob-label {
  font-family: var(--font-terminal);
  font-size: var(--font-size-xs);
  color: var(--crt-amber-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-1);
}

.knob-svg {
  width: 48px;
  height: 48px;
  touch-action: none;
}

.knob-arc-bg {
  fill: none;
  stroke: var(--crt-border);
  stroke-linecap: round;
}

.knob-arc-value {
  fill: none;
  stroke: var(--crt-amber);
  stroke-linecap: round;
  transition: stroke var(--transition-fast);
}

.knob-tick {
  stroke: var(--crt-amber-bright);
}

.knob-center {
  fill: var(--crt-bg-panel);
  stroke: var(--crt-border-bright);
}

.knob-readout {
  font-family: var(--font-terminal);
  font-size: var(--font-size-xs);
  color: var(--crt-amber);
  margin-top: var(--space-1);
}

.knob-container.disabled {
  opacity: 0.3;
  pointer-events: none;
}

.knob-container:focus-visible {
  outline: 2px solid var(--crt-amber);
  outline-offset: 2px;
}

.knob-container:hover .knob-arc-value,
.knob-container.dragging .knob-arc-value {
  stroke: var(--crt-amber-bright);
}

/* ============================================================
   Horizontal Slider
   ============================================================ */

.slider-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-2);
}

.slider-label {
  font-family: var(--font-terminal);
  font-size: var(--font-size-xs);
  color: var(--crt-amber-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.slider-track-wrap {
  position: relative;
  flex: 1;
  height: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.slider-track {
  width: 100%;
  height: 2px;
  background: var(--crt-border);
}

.slider-fill {
  position: absolute;
  left: 0;
  top: 50%;
  height: 2px;
  background: var(--crt-amber);
  transform: translateY(-50%);
  transition: width 30ms ease;
  pointer-events: none;
}

.slider-thumb {
  position: absolute;
  top: 50%;
  width: 8px;
  height: 14px;
  background: var(--crt-amber-bright);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.slider-readout {
  font-family: var(--font-terminal);
  font-size: var(--font-size-xs);
  color: var(--crt-amber);
  min-width: 36px;
  text-align: right;
}

.slider-container:focus-visible {
  outline: 2px solid var(--crt-amber);
  outline-offset: 2px;
}

/* Bipolar mode — center mark at 50% */
.slider-container.bipolar .slider-track-wrap::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1px;
  height: 8px;
  background: var(--crt-amber-dim);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* ============================================================
   Dropdown
   ============================================================ */

.dropdown-container {
  display: inline-flex;
  align-items: center;
}

.dropdown-select-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.dropdown-select {
  font-family: var(--font-terminal);
  font-size: var(--font-size-sm);
  color: var(--crt-amber);
  background: var(--crt-bg-inset);
  border: var(--border-thin);
  padding: var(--space-1) var(--space-6) var(--space-1) var(--space-2);
  min-width: 80px;
  appearance: none;
  cursor: pointer;
  line-height: 1.4;
}

.dropdown-arrow {
  position: absolute;
  right: var(--space-2);
  color: var(--crt-amber-dim);
  pointer-events: none;
  font-size: var(--font-size-xs);
}

.dropdown-entry-toggle {
  font-family: var(--font-terminal);
  font-size: var(--font-size-xs);
  color: var(--crt-amber-dim);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
  margin-left: var(--space-1);
}

.dropdown-entry-toggle:hover {
  color: var(--crt-amber);
}

.dropdown-entry-toggle:focus-visible {
  outline: 2px solid var(--crt-amber);
  outline-offset: 2px;
}

.dropdown-text-input {
  font-family: var(--font-terminal);
  font-size: var(--font-size-sm);
  color: var(--crt-amber);
  background: var(--crt-bg-inset);
  border: var(--border-thin);
  padding: var(--space-1) var(--space-2);
  min-width: 80px;
  display: none;
  line-height: 1.4;
}

.dropdown-container.entry-mode .dropdown-select {
  display: none;
}

.dropdown-container.entry-mode .dropdown-text-input {
  display: block;
}

.dropdown-select:focus-visible,
.dropdown-text-input:focus-visible {
  outline: 2px solid var(--crt-amber);
  outline-offset: 2px;
}

.dropdown-select:hover,
.dropdown-text-input:hover {
  border-color: var(--crt-border-bright);
}

/* ============================================================
   Toggle Button
   ============================================================ */

.toggle-btn {
  font-family: var(--font-terminal);
  font-size: var(--font-size-sm);
  color: var(--crt-amber-dim);
  background: var(--crt-bg-inset);
  border: var(--border-thin);
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.toggle-btn[aria-pressed="true"] {
  color: var(--crt-amber-bright);
  background: var(--crt-bg-panel);
  border-color: var(--crt-border-bright);
}

.toggle-btn:hover {
  color: var(--crt-amber);
  border-color: var(--crt-border-bright);
}

.toggle-btn:focus-visible {
  outline: 2px solid var(--crt-amber);
  outline-offset: 2px;
}

/* ============================================================
   Dot Toggle
   ============================================================ */

.dot-toggle {
  font-family: var(--font-terminal);
  font-size: var(--font-size-base);
  color: var(--crt-amber-dim);
  background: none;
  border: none;
  padding: var(--space-1);
  cursor: pointer;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
}

.dot-toggle[aria-pressed="true"] {
  color: var(--crt-amber-bright);
  text-shadow:
    0 0 var(--crt-glow-radius-1) var(--crt-amber-glow),
    0 0 var(--crt-glow-radius-2) var(--crt-amber-glow);
}

.dot-toggle:hover {
  color: var(--crt-amber);
}

.dot-toggle:focus-visible {
  outline: 2px solid var(--crt-amber);
  outline-offset: 2px;
}

/* ============================================================
   Terminal Panel
   ============================================================ */

.terminal-panel {
  position: relative;
  border: var(--border-double);
  padding: var(--space-4);
  background: var(--crt-bg-panel);
}

.terminal-panel__label {
  position: absolute;
  top: -10px;
  left: var(--space-4);
  background: var(--crt-bg-panel);
  font-family: var(--font-terminal);
  font-size: var(--font-size-sm);
  color: var(--crt-amber);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0 var(--space-2);
}

.terminal-panel__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ============================================================
   Panel Sub-sections
   ============================================================ */

.panel-subsection {
  padding: var(--space-2) 0;
}

.panel-subsection + .panel-subsection {
  border-top: var(--border-thin);
}

.panel-subsection__label {
  font-family: var(--font-terminal);
  font-size: var(--font-size-xs);
  color: var(--crt-amber-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}

/* ============================================================
   Control Row / Group
   ============================================================ */

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.control-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ============================================================
   Shared States
   ============================================================ */

.controls-disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* ============================================================
   Reduced Motion
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .knob-arc-value,
  .slider-fill {
    transition: none;
  }

  .toggle-btn,
  .dot-toggle {
    transition: none;
  }
}