* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; background: #000; }
#backgroundVideo { position: fixed; inset: 0; width: 100%; height: 100%; object-fit: cover; cursor: pointer; }
.control { position: fixed; z-index: 110; display: flex; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,.5); background: rgba(0,0,0,.7); color: white; cursor: pointer; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.control:hover { background: rgba(45,45,45,.9); }
.control:focus-visible { outline: 2px solid white; outline-offset: 3px; }
.control[hidden] { display: none; }
.control svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.sound-control { right: 24px; bottom: 24px; width: 48px; height: 48px; border-radius: 50%; }
.sound-control .sound-waves { display: none; }
.sound-control.is-unmuted .sound-waves { display: initial; }
.sound-control.is-unmuted .muted-mark { display: none; }
.play-control { left: 50%; top: 50%; transform: translate(-50%,-50%); width: 72px; height: 72px; border-radius: 50%; }
.play-control svg { width: 34px; height: 34px; fill: currentColor; stroke: none; margin-left: 4px; }
@media (max-width: 600px) { .sound-control { right: 16px; bottom: 16px; } .play-control { width: 64px; height: 64px; } }
@media (hover: hover) and (pointer: fine) {
  .sound-control { transition: opacity 300ms ease, visibility 300ms ease; }
  .sound-control.is-idle:not(:hover):not(:focus-visible) { opacity: 0; visibility: hidden; }
}
@media (prefers-reduced-motion: reduce) { .sound-control { transition: none; } }
/* CyberPompeii full-screen glowing border */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  box-sizing: border-box;
  border: 8px solid rgba(255, 140, 40, 0.9);
  box-shadow: inset 0 0 20px rgba(255, 140, 40, 0.7), inset 0 0 50px rgba(255, 100, 20, 0.35);
  pointer-events: none;
  z-index: 100;
}

/* Brief centred pause feedback; Play button appears after the feedback. */
.pause-indicator {
  position: fixed;
  z-index: 109;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(0, 0, 0, .48);
  color: rgba(255, 255, 255, .9);
  display: grid;
  place-items: center;
  pointer-events: none;
  animation: pause-feedback 750ms ease-out both;
}
.pause-indicator[hidden] { display: none; }
.pause-indicator svg { width: 32px; height: 32px; fill: currentColor; }
@keyframes pause-feedback {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(.9); }
  20% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  70% { opacity: 1; }
  100% { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .pause-indicator { animation: none; }
}

/* Brief play feedback after resuming; never blocks video clicks. */
.resume-indicator {
  position: fixed;
  z-index: 109;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(0, 0, 0, .48);
  color: rgba(255, 255, 255, .9);
  display: grid;
  place-items: center;
  pointer-events: none;
  animation: resume-feedback 750ms ease-out both;
}
.resume-indicator[hidden] { display: none; }
.resume-indicator svg { width: 32px; height: 32px; fill: currentColor; margin-left: 3px; }
@keyframes resume-feedback {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(.9); }
  20% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  70% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.04); }
}
@media (prefers-reduced-motion: reduce) {
  .resume-indicator { animation: none; }
}

/* Loading and error states */
.loading-indicator, .error-panel {
  position: fixed; z-index: 108; top: 50%; left: 50%;
  transform: translate(-50%, -50%); color: white;
  background: rgba(0,0,0,.7); border: 1px solid rgba(255,255,255,.25);
  border-radius: 14px; padding: 18px 24px;
  font: 14px Arial, sans-serif; text-align: center;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.loading-indicator { align-items: center; gap: 12px; }
.loading-indicator:not([hidden]) { display: flex; }
.loading-indicator[hidden], .error-panel[hidden] { display: none; }
.loading-spinner { width: 18px; height: 18px; border: 2px solid #ffffff55;
  border-top-color: white; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.error-panel p { margin: 0 0 14px; }
.retry-button { padding: 9px 22px; border-radius: 24px;
  border: 1px solid #ffffff88; background: #252525; color: white;
  font: inherit; cursor: pointer; }
.retry-button:hover { background: #444; }
.retry-button:focus-visible { outline: 2px solid white; outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { .loading-spinner { animation: none; } }