<div
  class="pb-buf"
  role="progressbar"
  aria-valuenow="42"
  aria-valuemin="0"
  aria-valuemax="100"
  aria-label="Playback progress"
>
  <div class="pb-buf-time">
    <span>1:24</span>
    <span class="pb-buf-total">4:18</span>
  </div>
  <div class="pb-buf-rail">
    <span class="pb-buf-buffered" style="--pb-buf-buffered: 68%"></span>
    <span class="pb-buf-played" style="--pb-buf-played: 42%"></span>
    <span class="pb-buf-thumb" style="--pb-buf-played: 42%"></span>
  </div>
  <div class="pb-buf-meta">
    <span class="pb-buf-title">Penthouse Tour · 4K</span>
    <span class="pb-buf-quality">HD · 1080p</span>
  </div>
</div>

.pb-buf {
  width: 280px;
  display: grid;
  gap: 8px;
  font-family: system-ui, sans-serif;
}

.pb-buf-time {
  display: flex;
  justify-content: space-between;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: #f0eeff;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.pb-buf-total {
  color: #94a3b8;
}

.pb-buf-rail {
  position: relative;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 99px;
}

.pb-buf-buffered {
  position: absolute;
  inset: 0;
  width: var(--pb-buf-buffered, 0%);
  background: rgba(255, 255, 255, 0.18);
  border-radius: inherit;
  transition: width 0.4s ease;
}

.pb-buf-played {
  position: absolute;
  inset: 0;
  width: var(--pb-buf-played, 0%);
  background: linear-gradient(90deg, #ef4444, #f97316);
  border-radius: inherit;
  transition: width 0.2s linear;
}

.pb-buf-thumb {
  position: absolute;
  top: 50%;
  left: var(--pb-buf-played, 0%);
  width: 12px;
  height: 12px;
  margin-left: -6px;
  margin-top: -6px;
  background: #fff;
  border-radius: 50%;
  box-shadow:
    0 0 0 3px rgba(239, 68, 68, 0.4),
    0 2px 8px rgba(0, 0, 0, 0.5);
  transform: scale(0);
  transition:
    transform 0.2s ease,
    left 0.2s linear;
}

.pb-buf-rail:hover .pb-buf-thumb,
.pb-buf:focus-within .pb-buf-thumb {
  transform: scale(1);
}

.pb-buf-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pb-buf-title {
  font-size: 12px;
  font-weight: 600;
  color: #f0eeff;
}

.pb-buf-quality {
  font-size: 10px;
  color: #94a3b8;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}