/* ============================================================
   ORBIT VISUALIZER: tidal locking + phases, the coin analogy.
   Retro CRT / Win95 exhibition styling, tokens from global.css.
   ============================================================ */

/* ---- Section label (this page doesn't load saturn-v.css) ---- */
.section-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.5rem;
  color: var(--color-accent-cyan);
  letter-spacing: 3px;
  margin-bottom: 1.1rem;
  text-transform: uppercase;
  opacity: 0.8;
}

/* ---- A self-contained visualization block ---- */
.ov-block {
  margin: 2.5rem 0 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(139, 94, 0, 0.2);
}

/* ---- Intro copy ---- */
.ov-intro {
  max-width: 720px;
}

.ov-lede {
  font-family: 'VT323', monospace;
  font-size: 1.25rem;
  color: var(--color-primary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.ov-questions {
  list-style: none;
  margin: 1.25rem 0 1.75rem;
  padding: 0;
}

.ov-questions li {
  font-family: 'VT323', monospace;
  font-size: 1.15rem;
  color: var(--color-dim);
  line-height: 1.6;
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.6rem;
}

.ov-questions li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--color-accent-cyan);
}

.ov-questions em {
  color: var(--color-accent-amber);
  font-style: normal;
}

/* ---- Stage: the canvas window ---- */
.ov-stage {
  width: 100%;
  max-width: 960px;
  margin: 0 auto 1.25rem;
}

.ov-chrome {
  border: 2px solid;
  border-color: var(--win-lighter) var(--win-darker) var(--win-darker) var(--win-lighter);
  box-shadow: inset 1px 1px 0 var(--win-light), inset -1px -1px 0 var(--win-dark);
  background: var(--win-face);
  overflow: hidden;
}

.ov-titlebar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--win-titlebar);
  color: var(--win-titlebar-text);
  font-family: 'Press Start 2P', monospace;
  font-size: 0.5rem;
  letter-spacing: 1px;
  padding: 0.4rem 0.6rem;
}

.ov-titlebar .ov-dots {
  display: flex;
  gap: 5px;
}

.ov-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}
.ov-dot--red   { background: #ff5f56; }
.ov-dot--amber { background: #ffbd2e; }
.ov-dot--green { background: #27c93f; }

.ov-titlebar .ov-title { flex: 1; }

.ov-viewport {
  position: relative;
  background: #02030a;
  border: 2px solid;
  border-color: var(--win-dark) var(--win-light) var(--win-light) var(--win-dark);
  margin: 2px;
}

.ov-viewport canvas {
  display: block;
  width: 100%;
  height: auto;
  background:
    radial-gradient(circle at 30% 20%, rgba(40,40,70,0.25), transparent 60%),
    #02030a;
  touch-action: manipulation;
}

/* ---- HUD readout (overlaid, top-left) ---- */
.ov-hud {
  position: absolute;
  top: 8px;
  left: 8px;
  font-family: 'VT323', monospace;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--color-dim);
  background: rgba(2, 3, 10, 0.55);
  border: 1px solid rgba(139, 94, 0, 0.25);
  padding: 0.35rem 0.6rem;
  pointer-events: none;
  max-width: 60%;
}

.ov-hud b { color: var(--color-primary); font-weight: normal; }
.ov-hud .ov-yes { color: #27c93f; }
.ov-hud .ov-no  { color: var(--color-dim); }

/* ---- Control panel ---- */
.ov-controls {
  width: 100%;
  max-width: 960px;
  margin: 0 auto 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.ov-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}

.ov-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ov-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.45rem;
  color: var(--color-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Win95 raised button */
.ov-btn {
  font-family: Tahoma, 'Noto Sans Mono', sans-serif;
  font-size: 0.8rem;
  font-weight: bold;
  color: var(--color-primary);
  background: var(--win-face);
  border: 2px solid;
  border-color: var(--win-lighter) var(--win-darker) var(--win-darker) var(--win-lighter);
  box-shadow: inset 1px 1px 0 var(--win-light);
  padding: 0.45rem 1.1rem;
  cursor: pointer;
  letter-spacing: 1px;
  transition: background 0.1s;
}
.ov-btn:hover { background: var(--win-light); color: #fff; }
.ov-btn:active,
.ov-btn[aria-pressed="true"] {
  border-color: var(--win-darker) var(--win-lighter) var(--win-lighter) var(--win-darker);
  box-shadow: inset 1px 1px 0 var(--win-dark);
  background: var(--win-light);
}

/* Segmented scene switch */
.ov-seg { display: inline-flex; }
.ov-seg .ov-btn { letter-spacing: 0; }
.ov-seg .ov-btn[aria-pressed="true"] { color: var(--color-accent-amber); }

/* Toggle (checkbox-as-LED) */
.ov-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: 'VT323', monospace;
  font-size: 1.05rem;
  color: var(--color-dim);
  cursor: pointer;
  user-select: none;
}
.ov-toggle input { position: absolute; opacity: 0; pointer-events: none; }
.ov-led {
  width: 12px;
  height: 12px;
  border: 1px solid rgba(139, 94, 0, 0.5);
  background: #0c0a06;
  box-shadow: inset 1px 1px 0 var(--win-darker);
  flex-shrink: 0;
}
.ov-toggle input:checked + .ov-led {
  background: var(--color-accent-amber);
  box-shadow: 0 0 6px var(--glow-primary);
  border-color: var(--color-accent-amber);
}
.ov-toggle input:focus-visible + .ov-led { outline: 1px solid var(--color-primary); }
.ov-toggle input:checked ~ .ov-toggle-text { color: var(--color-primary); }

/* Speed slider */
.ov-speed { flex: 1; min-width: 160px; }
.ov-slider {
  width: 100%;
  height: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: #222;
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.ov-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  transition: background 0.15s;
}
.ov-slider::-webkit-slider-thumb:hover { background: var(--color-accent-amber); }
.ov-slider::-moz-range-thumb {
  width: 12px; height: 12px;
  border: none; border-radius: 50%;
  background: var(--color-primary); cursor: pointer;
}
.ov-speed-val {
  font-family: 'VT323', monospace;
  font-size: 1rem;
  color: var(--color-dim);
  min-width: 17ch;
  text-align: right;
}

/* ---- How it works ---- */
.ov-explain {
  max-width: 720px;
}
.ov-explain h2 {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.7rem;
  color: var(--color-accent-cyan);
  letter-spacing: 2px;
  margin: 2.5rem 0 1.25rem;
}
.ov-explain h3 {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.55rem;
  color: var(--color-accent-amber);
  letter-spacing: 1px;
  margin: 2rem 0 1rem;
}
.ov-explain p {
  font-family: 'VT323', monospace;
  font-size: 1.15rem;
  color: var(--color-dim);
  line-height: 1.7;
  margin-bottom: 1rem;
}
.ov-explain p b { color: var(--color-primary); font-weight: normal; }
.ov-explain a { color: var(--color-accent-amber); }

.ov-sources {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(139, 94, 0, 0.2);
  font-family: 'VT323', monospace;
  font-size: 1rem;
  color: var(--color-dim);
  line-height: 1.6;
}
.ov-sources a { color: var(--color-accent-amber); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .ov-lede { font-size: 1.1rem; }
  .ov-hud { font-size: 0.85rem; max-width: 70%; }
  .ov-row { gap: 0.6rem 0.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  .ov-toggle input:checked + .ov-led { box-shadow: none; }
}