:root {
  --sp-bg: #ffffff;
  --sp-text: #111827;
  --sp-muted: #6b7280;
  --sp-accent: #2563eb;
  --sp-border: rgba(0,0,0,0.06);
  --sp-shadow: 0 16px 50px rgba(17, 24, 39, 0.18);
}

.sp-root {
  position: fixed;
  z-index: 9998;
  inset: auto 18px 28px auto;
  display: none;
  pointer-events: none;
  font-family: Inter, Segoe UI, system-ui, -apple-system, sans-serif;
}

.sp-root[data-position=bottom-left] { inset: auto auto 28px 18px; }
.sp-root[data-position=bottom-right] { inset: auto 18px 28px auto; }
.sp-root[data-position=top-left] { inset: 18px auto auto 18px; }
.sp-root[data-position=top-right] { inset: 18px 18px auto auto; }

.sp-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  background: var(--sp-bg);
  color: var(--sp-text);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: var(--sp-shadow);
  border: 1px solid var(--sp-border);
  min-width: 260px;
  max-width: 340px;
  pointer-events: auto;
  opacity: 0;
  transform: translateY(16px) scale(0.98);
  transition: opacity 220ms ease, transform 260ms ease;
}

.sp-root.sp-visible .sp-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.sp-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(145deg, #2563eb, #1d4ed8);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.35);
}

.sp-content {
  display: grid;
  gap: 2px;
  line-height: 1.3;
}

.sp-line { font-size: 14px; }
.sp-meta { font-size: 12px; color: var(--sp-muted); display: flex; align-items: center; gap: 8px; }

.sp-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: #1d4ed8;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sp-badge svg { width: 14px; height: 14px; }

.sp-time { color: var(--sp-muted); font-size: 12px; }

@media (max-width: 540px) {
  .sp-root { inset: auto auto 16px 16px; }
  .sp-card { max-width: calc(100vw - 32px); width: auto; gap: 10px; padding: 11px 12px; }
  .sp-avatar { width: 38px; height: 38px; font-size: 15px; }
  .sp-line { font-size: 13px; }
  .sp-meta { font-size: 11px; }
}
  .sp-card { max-width: calc(100vw - 32px); width: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .sp-card { transition: none; }
  .sp-root { animation: none !important; }
}

.sp-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}