.casting-button { position: relative; }
.casting-button .casting-dot {
  display: none;
  position: absolute;
  right: 5px;
  top: 5px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #45d483;
}
.casting-button[data-cast-state="connected"] { color: #45d483; }
.casting-button[data-cast-state="connected"] .casting-dot,
.casting-button[data-cast-state="connecting"] .casting-dot { display: block; }
.casting-button[data-cast-state="connecting"] .casting-dot { background: #ffca66; }
.casting-help[hidden] { display: none !important; }
.casting-help {
  position: absolute;
  z-index: 170;
  inset: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) auto auto;
  display: flex;
  flex-direction: column;
  width: min(440px, calc(100% - 32px));
  max-height: calc(100% - max(32px, env(safe-area-inset-top)) - env(safe-area-inset-bottom));
  color: #f5f5f7;
  background: rgba(20, 20, 25, .98);
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 18px;
  box-shadow: 0 14px 60px rgba(0, 0, 0, .6);
  overflow: hidden;
}
.casting-help-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 0 0 auto;
  gap: 10px;
  padding: 12px 12px 10px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.casting-help-header h3 { margin: 0; font-size: 16px; line-height: 1.4; }
.casting-help-close { min-width: 44px; min-height: 44px; font-size: 28px; color: #f5f5f7; }
.casting-help-body { overflow-y: auto; overscroll-behavior: contain; min-height: 0; padding: 4px 18px 18px; font-size: 14px; line-height: 1.5; }
.casting-help-body p { margin: 12px 0; }
.casting-help-body ul { padding-left: 19px; }
.casting-help-body li + li { margin-top: 10px; }
.casting-help-message { color: #ffca66; }
.casting-retry { min-height: 44px; }
.casting-retry[hidden] { display: none !important; }
.casting-help :focus-visible,
.casting-button:focus-visible { outline: 3px solid #ff2d55; outline-offset: 2px; }
@media (max-width: 600px), (max-height: 500px) and (pointer: coarse) {
  .casting-button { min-width: 44px; min-height: 44px; }
  .casting-help {
    inset: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right)) auto max(8px, env(safe-area-inset-left));
    width: auto;
    max-height: calc(100% - max(16px, env(safe-area-inset-top)) - env(safe-area-inset-bottom));
    border-radius: 14px;
  }
}