party-player/public/player/player.css

:root {
  --accent: #ff4fc3;
  --ink: #14060f;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  cursor: none;
}

/* --- background ------------------------------------------------------- */

#backgrounds {
  position: fixed;
  inset: 0;
}

#backgrounds img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 900ms ease;
  /* Knock the poster back so the video frame stays the focal point — the
     posters are pale and read far brighter on a projector than on a desk. */
  filter: brightness(0.45) saturate(1.15);
}

#backgrounds img.active {
  opacity: 1;
}

/* --- frozen screenshots ------------------------------------------------ */

#stills {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

#stills img {
  position: absolute;
  top: 0;
  left: 0;
  object-fit: cover;
  opacity: 0;
  /* Matches #frameSkin, so a still reads as a frozen copy of the frame. */
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.85);
  box-shadow:
    0 0 0 4px rgba(255, 79, 195, 0.55),
    0 24px 70px rgba(0, 0, 0, 0.7);
  transition: opacity 500ms ease;
  will-change: transform;
}

#stills img.visible {
  opacity: 1;
}

/* The trail ramps opacity frame-by-frame as a still ages, so the CSS transition
   above would only fight it. */
#stills img.trail {
  transition: none;
}

/* --- the moving frame -------------------------------------------------- */

#frameMover {
  position: fixed;
  top: 0;
  left: 0;
  /* Above the stills, so the live video always wins if anything ever overlaps. */
  z-index: 2;
  will-change: transform;
}

#frameSkin {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.85);
  box-shadow:
    0 0 0 4px rgba(255, 79, 195, 0.55),
    0 24px 70px rgba(0, 0, 0, 0.7);
  background: #000;
}

/* Lift the frame while the drag animation is holding it, the way a dragged
   window separates from the desktop. */
#frameMover.dragging #frameSkin {
  box-shadow:
    0 0 0 4px rgba(255, 79, 195, 0.75),
    0 40px 100px rgba(0, 0, 0, 0.85);
}

/* --- the drawn pointer -------------------------------------------------- */

/* Built and removed by the drag animation; nothing else on the page has one. */
#pointer {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 3;
  pointer-events: none;
  will-change: transform;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.6));
}

#pointer svg {
  display: block;
  transition: transform 90ms ease;
}

/* The click itself: the arrow dips, so a grab is visible even mid-pause. */
#pointer.down svg {
  transform: scale(0.82);
}

.deck {
  position: absolute;
  inset: 0;
  opacity: 0;
  /* Opacity is driven frame-by-frame during a crossfade, so no CSS transition
     here — it would fight the JS ramp. */
}

.deck iframe {
  width: 100%;
  height: 100%;
  border: 0;
  /* The iframe would otherwise swallow nothing useful, but keeping it inert
     avoids stray clicks pausing playback. */
  pointer-events: none;
}

/* The screen-capture stream's sink. Has to be in the document to keep getting
   frames (see capture.js), but must not be visible or catch clicks. */
#captureSink {
  position: fixed;
  left: 0;
  top: 0;
  width: 1px;
  height: 1px;
  opacity: 0.01;
  pointer-events: none;
  z-index: -1;
}

#probe {
  position: fixed;
  left: -400px;
  top: -400px;
  width: 320px;
  height: 180px;
  opacity: 0;
  pointer-events: none;
}

/* --- start gate -------------------------------------------------------- */

#gate {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(20, 6, 15, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
  cursor: pointer;
  transition: opacity 400ms ease;
}

#gate.hidden {
  opacity: 0;
  pointer-events: none;
}

.gate-inner {
  text-align: center;
  color: #fff;
}

.gate-inner h1 {
  font-size: clamp(2rem, 7vw, 5rem);
  margin: 0 0 0.3em;
  letter-spacing: -0.03em;
  color: var(--accent);
}

.gate-inner p {
  margin: 0 0 2em;
  opacity: 0.7;
  font-size: 1.05rem;
}

#start {
  font: inherit;
  font-size: 1.3rem;
  padding: 0.7em 3em;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
}

#start:disabled {
  opacity: 0.35;
  cursor: default;
}

#status {
  position: fixed;
  bottom: 12px;
  right: 16px;
  z-index: 20;
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}