/**
 * Shared in-app dialogs (replaces window.alert / window.confirm).
 * Uses :root variables when present (--bg, --card, --txt, --txt2, --acc, --border).
 */
.rt-dialog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease, visibility 0.18s ease;
}
.rt-dialog-backdrop.rt-dialog--open {
  opacity: 1;
  visibility: visible;
}
.rt-dialog {
  width: 100%;
  max-width: 420px;
  background: var(--card, #0d0f11);
  border: 1px solid var(--border, rgba(255, 255, 255, 0.08));
  border-radius: 12px;
  padding: 22px 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
  font-family: var(--fb, system-ui, sans-serif);
  color: var(--txt, #cfcfcf);
  transform: translateY(8px) scale(0.98);
  transition: transform 0.2s ease;
}
.rt-dialog-backdrop.rt-dialog--open .rt-dialog {
  transform: translateY(0) scale(1);
}
.rt-dialog-title {
  font-family: var(--fd, var(--fb, system-ui, sans-serif));
  font-size:19px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 10px 0;
  line-height: 1.3;
}
.rt-dialog-body {
  margin: 0;
  font-size:16px;
  line-height: 1.55;
  color: var(--txt2, #9aa7a3);
  white-space: pre-wrap;
  word-break: break-word;
}
.rt-dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 22px;
}
.rt-dialog-btn {
  appearance: none;
  font-family: inherit;
  font-size:16px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid var(--border, rgba(255, 255, 255, 0.12));
  background: rgba(255, 255, 255, 0.06);
  color: var(--txt, #cfcfcf);
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.rt-dialog-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}
.rt-dialog-btn:focus-visible {
  outline: 2px solid var(--acc, #00c281);
  outline-offset: 2px;
}
.rt-dialog-btn--primary {
  background: rgba(0, 194, 129, 0.18);
  border-color: rgba(0, 194, 129, 0.45);
  color: var(--acc, #00c281);
}
.rt-dialog-btn--primary:hover {
  background: rgba(0, 194, 129, 0.28);
}
.rt-dialog-btn--danger {
  background: rgba(224, 82, 82, 0.12);
  border-color: rgba(224, 82, 82, 0.45);
  color: #e05252;
}
.rt-dialog-btn--danger:hover {
  background: rgba(224, 82, 82, 0.2);
}
.rt-dialog-btn--ghost {
  background: transparent;
}