/* ============================================
   CONTROLS — Speed, audio, zoom, info panel
   ============================================ */

/* Controls bar */
.controls-bar {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 10px 20px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
  user-select: none;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.control-group + .control-group {
  padding-left: 16px;
  border-left: 1px solid var(--glass-border);
}

/* Buttons */
.ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.ctrl-btn:active {
  transform: translateY(0);
}

.ctrl-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.ctrl-btn.active {
  background: rgba(100, 181, 246, 0.2);
  border-color: var(--accent);
  color: var(--accent);
}

/* Play icon (shown when paused) */
.ctrl-btn .play-icon {
  display: none;
}
.ctrl-btn.paused .play-icon {
  display: block;
}
.ctrl-btn.paused .pause-icon {
  display: none;
}

/* Sliders */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: var(--text-primary);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--text-primary);
  border-radius: 50%;
  border: none;
  cursor: pointer;
}

input[type="range"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.speed-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.speed-display {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 32px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ---- Info Panel ---- */
.info-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 320px;
  height: 100vh;
  background: var(--glass-bg);
  border-left: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 32px 24px;
  z-index: 200;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-panel[hidden] {
  display: block !important;
  /* keep in DOM for transition; translateX hides it */
}

.info-panel.open {
  transform: translateX(0);
}

.info-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.info-close:hover {
  background: rgba(255, 255, 255, 0.15);
}

.info-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.info-planet-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
}

.info-header h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.info-stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  margin-bottom: 24px;
}

.info-stats dt {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 0;
}

.info-stats dd {
  font-size: 14px;
  color: var(--text-primary);
  padding: 4px 0;
  font-weight: 500;
}

.info-fact {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
  padding: 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 10px;
  border-left: 3px solid var(--accent);
  font-style: italic;
}

/* Keyboard hints */
.keyboard-hints {
  position: fixed;
  bottom: 72px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 99;
  pointer-events: none;
}

.keyboard-hints.visible {
  opacity: 1;
}

.keyboard-hints span {
  font-size: 10px;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}