/* Stay-informed email signup widget — replaces BMC across all pages.
   Posts to /api/subscribe (Vercel serverless function backed by Upstash Redis).
   Has 3 visual states: pill (collapsed) → form (expanded) → success. */
.si-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 50;
  background: linear-gradient(135deg, #4ec9ff 0%, #6c5ce7 100%);
  color: #0b0e14;
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(78,201,255,.45), 0 0 0 0 rgba(78,201,255,.5);
  font: 600 13px/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  border: 0;
  cursor: pointer;
  overflow: hidden;
  transition: transform .18s, box-shadow .18s;
  animation: si-pulse 3s ease-in-out infinite;
}
.si-widget:hover {
  transform: translateY(-2px) scale(1.02);
  animation-play-state: paused;
}
@keyframes si-pulse {
  0%, 100% { box-shadow: 0 6px 20px rgba(78,201,255,.45), 0 0 0 0 rgba(78,201,255,.5); }
  60% { box-shadow: 0 6px 20px rgba(78,201,255,.45), 0 0 0 14px rgba(78,201,255,0); }
}

.si-pill {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 18px;
}
.si-pill .si-icon {
  font-size: 16px; line-height: 1;
  filter: drop-shadow(0 1px 0 rgba(255,255,255,.3));
}
.si-pill-text { font-weight: 600; }

.si-form, .si-success {
  display: none;
  padding: 14px;
  width: 280px;
  background: #11151d;
  color: #e6ecf3;
  border-radius: 12px;
}
.si-widget.expanded { padding: 0; cursor: default; animation: none; }
.si-widget.expanded .si-pill { display: none; }
.si-widget.expanded.error .si-form,
.si-widget.expanded:not(.success):not(.error) .si-form { display: block; }
.si-widget.expanded.success .si-success { display: block; }

.si-form .si-title {
  font-size: 14px; font-weight: 600;
  color: var(--accent2, #4ec9ff);
  margin-bottom: 4px;
  display: flex; align-items: center; justify-content: space-between;
}
.si-form .si-title button {
  background: none; border: 0; color: #8a93a3;
  font-size: 18px; cursor: pointer; line-height: 1; padding: 0;
}
.si-form .si-title button:hover { color: #e6ecf3; }
.si-form .si-sub {
  font-size: 11px; color: #8a93a3;
  margin-bottom: 10px;
}
.si-form input[type="email"] {
  width: 100%;
  background: #0b0e14;
  border: 1px solid #232a39;
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit; font-size: 13px; color: #e6ecf3;
  outline: none;
  transition: border-color .12s;
}
.si-form input[type="email"]:focus {
  border-color: var(--accent2, #4ec9ff);
}
.si-form button.si-submit {
  width: 100%;
  margin-top: 8px;
  background: linear-gradient(135deg, #4ec9ff 0%, #6c5ce7 100%);
  color: #0b0e14;
  border: 0; border-radius: 8px;
  padding: 10px;
  font: 600 13px/1 inherit;
  cursor: pointer;
  transition: transform .12s;
}
.si-form button.si-submit:hover { transform: scale(1.02); }
.si-form button.si-submit:disabled { opacity: .55; cursor: wait; transform: none; }
.si-form .si-error {
  margin-top: 8px; font-size: 11px; color: #ff7d99;
  display: none;
}
.si-widget.error .si-form .si-error { display: block; }
.si-success {
  text-align: center;
  padding: 20px 16px;
}
.si-success .si-emoji { font-size: 28px; margin-bottom: 8px; }
.si-success .si-msg { font-size: 13px; color: #e6ecf3; }
.si-success .si-msg strong { color: var(--accent2, #4ec9ff); }
.si-success .si-tip { font-size: 11px; color: #8a93a3; margin-top: 8px; }

@media (max-width: 720px) {
  .si-widget { bottom: 14px; right: 14px; }
  .si-form, .si-success { width: 240px; padding: 12px; }
  .si-pill { padding: 10px 14px; font-size: 12px; }
}
body.embed .si-widget { display: none; }