/* Action-level auth prompt — senior-friendly modal overlay */
.st-auth-guard-overlay {
  position: fixed;
  inset: 0;
  z-index: 2147483647;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.55);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.st-auth-guard-overlay[hidden] {
  display: none !important;
}

.st-auth-guard-dialog {
  width: 100%;
  max-width: 28rem;
  padding: 2rem 1.75rem 1.5rem;
  background: #fff;
  border-radius: 14px;
  border: 2px solid #d8e0e0;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
  text-align: center;
  font-family: 'Montserrat', sans-serif;
}

.st-auth-guard-dialog__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: #f0fafb;
  color: #2fadb1;
  font-size: 1.5rem;
  line-height: 1;
}

.st-auth-guard-dialog__title {
  margin: 0 0 0.75rem;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.35;
  color: #1a1a1a;
}

.st-auth-guard-dialog__message {
  margin: 0 0 1.5rem;
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.55;
  color: #444;
}

.st-auth-guard-dialog__actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.st-auth-guard-dialog__signin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 3rem;
  padding: 0.75rem 1.25rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(102.26deg, #34c0c5 0, #2fadb1 99.99%, #2b9da1 100%);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.st-auth-guard-dialog__signin:hover,
.st-auth-guard-dialog__signin:focus-visible {
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(47, 173, 177, 0.4);
  outline: 3px solid #005fcc;
  outline-offset: 2px;
}

.st-auth-guard-dialog__dismiss {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: #555;
  background: transparent;
  border: 1px solid #ccc;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
}

.st-auth-guard-dialog__dismiss:hover,
.st-auth-guard-dialog__dismiss:focus-visible {
  background: #f5f5f5;
  outline: 3px solid #005fcc;
  outline-offset: 2px;
}

@media (min-width: 480px) {
  .st-auth-guard-dialog__actions {
    flex-direction: row;
  }

  .st-auth-guard-dialog__signin,
  .st-auth-guard-dialog__dismiss {
    flex: 1;
  }
}