/* WhatsApp simulator (/sim/whatsapp) — Leona-branded chat on a phone, demo personas and a live explainer.
   Class prefix: .sim-  (S7). Tokens only — no raw brand hex. */

.sim {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--cream);
  overflow-x: clip;
}
.sim-glow {
  position: absolute;
  inset: 0 0 auto 0;
  height: 560px;
  background:
    radial-gradient(55% 70% at 12% 0%, rgba(169, 138, 255, .42) 0%, rgba(169, 138, 255, 0) 70%),
    radial-gradient(50% 65% at 88% 6%, rgba(248, 199, 173, .5) 0%, rgba(248, 199, 173, 0) 70%);
  pointer-events: none;
}

/* ---------------------------------------------------------------- top bar */
.sim-top {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: calc(14px + var(--safe-top)) 24px 14px;
}
.sim-brand { display: inline-flex; color: var(--purple); border-radius: 8px; }
.sim-top-titles { flex: 1; min-width: 0; padding-left: 20px; border-left: 1px solid var(--line-strong); }
.sim-eyebrow { font-size: var(--fs-xs); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--purple); }
.sim-title { font-size: var(--fs-lg); margin-top: 2px; }
.sim-top-actions { display: flex; align-items: center; gap: 12px; }
.sim-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 30px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  background: var(--success-tint);
  color: var(--success-ink);
  font-size: var(--fs-sm);
  font-weight: 600;
  white-space: nowrap;
}
.sim-live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: sim-pulse 1.8s ease-out infinite; }
.sim[data-live="connecting"] .sim-live,
.sim[data-live="closed"] .sim-live { background: var(--warning-tint); color: var(--warning-ink); }
.sim[data-live="connecting"] .sim-live-dot,
.sim[data-live="closed"] .sim-live-dot { background: var(--amber); animation: none; }
@keyframes sim-pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 189, 129, .55); }
  70% { box-shadow: 0 0 0 8px rgba(0, 189, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 189, 129, 0); }
}

/* ---------------------------------------------------------------- layout */
.sim-body {
  position: relative;
  z-index: 1;
  flex: 1;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 4px 24px 24px;
}
.sim-stage { display: flex; flex-direction: column; align-items: center; gap: 14px; min-width: 0; }
.sim-footnote {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  max-width: 420px;
  font-size: var(--fs-sm);
  color: var(--ink-2);
  text-align: center;
}
.sim-footnote svg { color: var(--purple); }

/* ---------------------------------------------------------------- personas */
.sim-people {
  position: sticky;
  top: 16px;
  display: flex;
  flex-direction: column;
  max-height: calc(100dvh - 104px);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}
.sim-people-head { display: flex; align-items: flex-start; gap: 8px; padding: 20px 16px 8px 20px; }
.sim-people-titles { flex: 1; min-width: 0; }
.sim-people-title { font-size: var(--fs-md); font-weight: 600; letter-spacing: var(--track-tight); }
.sim-people-sub { margin-top: 4px; font-size: var(--fs-sm); color: var(--ink-2); line-height: 1.4; }
.sim-drawer-close { display: none; }
.sim-people-new { padding: 8px 16px 12px; }
.sim-people-list {
  display: grid;
  align-content: start;
  gap: 2px;
  padding: 4px 8px 12px;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.sim-people-loading { display: grid; gap: 14px; padding: 8px 12px; }
.sim-person-sk { display: flex; align-items: center; gap: 12px; }
.sim-person-sk .skeleton-lines { flex: 1; }
.sim-person {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 12px;
  border-radius: var(--radius);
  text-align: left;
  transition: background-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}
.sim-person:hover { background: var(--cream-light); }
.sim-person.is-selected { background: var(--purple-light); box-shadow: inset 3px 0 0 var(--purple); }
.sim-person-main { flex: 1; min-width: 0; display: grid; gap: 1px; }
.sim-person-top { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; min-width: 0; }
.sim-person-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 15px; font-weight: 600; }
.sim-person-time { flex: none; font-size: var(--fs-xs); color: var(--ink-3); }
.sim-person-time.is-unread { color: var(--purple); font-weight: 700; }
.sim-person-sub { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12.5px; font-weight: 500; color: var(--purple); }
.sim-person-bottom { display: flex; align-items: center; gap: 8px; min-width: 0; }
.sim-person-last { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--fs-sm); color: var(--ink-2); }
.has-unread .sim-person-last { color: var(--ink); font-weight: 500; }
.sim-unread {
  display: grid;
  place-items: center;
  flex: none;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: var(--radius-pill);
  background: var(--purple);
  color: var(--cream-light);
  font-size: 11px;
  font-weight: 700;
  animation: sim-pop var(--dur-3) var(--ease-out);
}
.sim-person-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 5px; }
.sim-person-tags .badge { height: 20px; padding: 0 7px; font-size: 11px; }
@keyframes sim-pop { from { transform: scale(.4); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------------------------------------------------------------- the phone */
.sim-phone {
  width: min(100%, 420px);
  height: min(820px, calc(100dvh - 128px));
  min-height: 560px;
  padding: 10px;
  border-radius: 46px;
  background: var(--purple-dark);
  box-shadow: var(--shadow-3), inset 0 0 0 1px rgba(255, 255, 255, .08);
}
.sim-phone-screen {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: 37px;
  overflow: hidden;
  background: var(--cream-light);
}
.sim-chat-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 10px 12px 14px;
  background: var(--purple);
  color: var(--cream-light);
}
.sim-chat-head .icon-btn { color: var(--cream-light); }
.sim-chat-head .icon-btn:hover { background: rgba(255, 255, 255, .12); }
.sim-chat-head .icon-btn[aria-pressed="true"] { background: rgba(255, 255, 255, .16); }
.sim-people-btn { display: none; }
.sim-leona-av {
  display: grid;
  place-items: center;
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lavender-2), var(--purple-hover));
  box-shadow: 0 0 0 2px rgba(255, 255, 255, .2);
}
.sim-chat-titles { flex: 1; min-width: 0; }
.sim-chat-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 15px; font-weight: 600; line-height: 1.25; }
.sim-chat-status { font-size: var(--fs-xs); color: var(--on-dark-2); line-height: 1.3; }
.sim-chat-status.is-typing { color: var(--lavender); font-style: italic; }
.sim-chat-status.is-paused { color: var(--peach); }

.sim-persona-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px 7px 12px;
  background: var(--purple-light);
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
}
.sim-persona-text { flex: 1; min-width: 0; display: flex; align-items: baseline; gap: 6px; overflow: hidden; white-space: nowrap; }
.sim-persona-text strong { overflow: hidden; text-overflow: ellipsis; }
.sim-persona-label { color: var(--ink-2); }
.sim-persona-phone { color: var(--ink-3); overflow: hidden; text-overflow: ellipsis; }
.sim-reset {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: none;
  height: 28px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  color: var(--purple);
  font-size: var(--fs-xs);
  font-weight: 600;
  transition: background-color var(--dur-2) var(--ease);
}
.sim-reset:hover { background: var(--purple-tint); }

/* ---------------------------------------------------------------- messages */
.sim-messages-wrap { position: relative; display: flex; flex-direction: column; flex: 1; min-height: 0; }
.sim-messages {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-height: 0;
  padding: 14px 12px 10px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background-color: var(--cream);
  background-image: radial-gradient(rgba(37, 0, 142, .06) 1px, transparent 1.4px);
  background-size: 18px 18px;
  outline: none;
}
.sim-day { align-self: center; margin: 10px 0 4px; }
.sim-day span {
  display: inline-block;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  box-shadow: var(--shadow-1);
  color: var(--ink-2);
  font-size: 11.5px;
  font-weight: 600;
}
.sim-row { display: flex; flex-direction: column; max-width: 86%; min-width: 0; }
.sim-row-me { align-self: flex-end; align-items: flex-end; }
.sim-row-them { align-self: flex-start; align-items: flex-start; }
.sim-row + .sim-row-me:not(.sim-row-me + .sim-row-me),
.sim-row + .sim-row-them:not(.sim-row-them + .sim-row-them) { margin-top: 6px; }
.sim-row.is-new { animation: sim-in .3s var(--ease-out); }
@keyframes sim-in { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }

.sim-bubble {
  position: relative;
  min-width: 72px;
  max-width: 100%;
  padding: 8px 11px 5px 12px;
  border-radius: 18px;
  font-size: 14.5px;
  line-height: 1.42;
  overflow-wrap: anywhere;
  box-shadow: 0 1px 1.5px rgba(22, 0, 85, .08);
}
.sim-bubble-them { background: var(--surface); color: var(--ink); border-top-left-radius: 6px; }
.sim-bubble-me { background: var(--purple); color: var(--cream-light); border-top-right-radius: 6px; }
.sim-bubble-me a { color: var(--lavender); }
.sim-text strong { font-weight: 650; }
.sim-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 3px;
  margin-top: 2px;
  font-size: 11px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.sim-bubble-me .sim-meta { color: rgba(251, 249, 247, .72); }
.sim-tick-wrap { display: inline-flex; }
.sim-ticks { display: inline-flex; color: var(--lavender); }
.sim-ticks svg + svg { margin-left: -9px; }
.sim-kind {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 3px;
  color: var(--purple);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.sim-kind-staff { color: var(--teal); }
.sim-row.is-pending .sim-bubble-me { opacity: .82; }
.sim-row.is-failed .sim-bubble-me { background: var(--danger-strong); }
.sim-failed { display: flex; align-items: center; gap: 4px; margin-top: 4px; font-size: var(--fs-xs); }
.sim-failed-retry { margin-left: 4px; color: inherit; font-weight: 700; text-decoration: underline; }

.sim-actions { display: grid; grid-template-columns: minmax(0, 1fr); gap: 6px; width: 100%; min-width: 230px; margin-top: 6px; }
.sim-actions.is-many { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sim-actions.is-many > :last-child:nth-child(odd) { grid-column: 1 / -1; }
.sim-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 0;
  min-height: 40px;
  padding: 8px 12px;
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 1px 1.5px rgba(22, 0, 85, .08);
  color: var(--purple);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: background-color var(--dur-2) var(--ease), transform var(--dur-1) var(--ease);
}
.sim-action span { min-width: 0; overflow-wrap: anywhere; }
.sim-action:hover { background: var(--purple-light); color: var(--purple); }
.sim-action:active { transform: scale(.98); }
.sim-action.is-tapped { background: var(--purple-tint); }
.sim-action-icon { flex: none; opacity: .6; transform: rotate(-35deg); }
.sim-action-link svg { flex: none; opacity: .75; }

.sim-typing .sim-bubble { min-width: 0; padding: 12px 14px; }
.sim-dots { display: inline-flex; gap: 4px; }
.sim-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-3); animation: sim-dot 1.2s infinite ease-in-out; }
.sim-dots i:nth-child(2) { animation-delay: .15s; }
.sim-dots i:nth-child(3) { animation-delay: .3s; }
@keyframes sim-dot { 0%, 60%, 100% { transform: none; opacity: .45; } 30% { transform: translateY(-4px); opacity: 1; } }

.sim-chat-empty {
  display: grid;
  justify-items: center;
  gap: 8px;
  max-width: 290px;
  margin: auto;
  padding: 24px 8px;
  text-align: center;
}
.sim-chat-empty-mark {
  display: grid;
  place-items: center;
  width: 66px;
  height: 66px;
  margin-bottom: 4px;
  border-radius: 50%;
  background: var(--surface);
  box-shadow: var(--shadow-1);
  color: var(--purple);
}
.sim-chat-empty-title { font-family: var(--font-display); font-size: var(--fs-md); font-weight: 500; }
.sim-chat-empty-text { font-size: 13.5px; color: var(--ink-2); line-height: 1.45; }
.sim-chat-empty-who { font-size: 12.5px; font-weight: 600; color: var(--purple); }
.sim-chat-empty .btn { margin-top: 6px; }
.sim-thread-loading { display: grid; gap: 10px; padding: 8px 2px; }
.sim-sk-right { justify-self: end; }
.sim-thread-error { margin: auto 0; }

.sim-handoff {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 10px;
  margin: 0;
  padding: 12px 14px;
  background: var(--warning-tint);
  border-top: 1px solid rgba(255, 166, 0, .25);
  color: var(--warning-ink);
  font-size: var(--fs-sm);
}
.sim-handoff-icon { display: grid; place-items: center; flex: none; width: 30px; height: 30px; border-radius: 50%; background: rgba(255, 166, 0, .18); }
.sim-handoff-text { flex: 1; min-width: 180px; line-height: 1.4; }
.sim-handoff-title { font-weight: 700; }
.sim-handoff-actions { display: flex; flex-wrap: wrap; gap: 6px; width: 100%; padding-left: 40px; }

/* ---------------------------------------------------------------- composer */
.sim-composer { padding: 8px 10px calc(10px + var(--safe-bottom)); background: var(--cream-light); border-top: 1px solid var(--line); }
.sim-chips {
  display: flex;
  gap: 6px;
  padding: 2px 2px 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent);
  mask-image: linear-gradient(90deg, #000 88%, transparent);
}
.sim-chips::-webkit-scrollbar { display: none; }
.sim-chip {
  flex: none;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--purple);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: background-color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.sim-chip:hover:not(:disabled) { background: var(--purple-light); border-color: var(--purple); }
.sim-chip:disabled { opacity: .45; cursor: default; }
.sim-compose-row { display: flex; align-items: flex-end; gap: 8px; }
.sim-input-wrap {
  display: flex;
  flex: 1;
  min-width: 0;
  padding: 3px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background: var(--surface);
  transition: box-shadow var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.sim-input-wrap:focus-within { border-color: var(--purple); box-shadow: var(--ring); }
.sim-input {
  width: 100%;
  max-height: 132px;
  padding: 8px 0;
  border: 0;
  outline: none;
  resize: none;
  background: transparent;
  font-size: 15px;
  line-height: 1.4;
}
.sim-input::placeholder { color: var(--ink-muted); }
.sim-input:disabled { cursor: not-allowed; }
.sim-send {
  display: grid;
  place-items: center;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--purple);
  color: var(--cream-light);
  transition: background-color var(--dur-2) var(--ease), transform var(--dur-1) var(--ease), opacity var(--dur-2) var(--ease);
}
.sim-send:hover:not(:disabled) { background: var(--purple-hover); }
.sim-send:active:not(:disabled) { transform: scale(.94); }
.sim-send:disabled { opacity: .4; }

/* ---------------------------------------------------------------- explainer */
.sim-insights {
  position: sticky;
  top: 16px;
  display: none;
  flex-direction: column;
  max-height: calc(100dvh - 104px);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}
.sim-insights-head { display: flex; align-items: flex-start; gap: 12px; padding: 18px 12px 14px 20px; border-bottom: 1px solid var(--line-soft); }
.sim-insights-icon { display: grid; place-items: center; flex: none; width: 36px; height: 36px; border-radius: 12px; background: var(--grad-mark); color: var(--purple); }
.sim-insights-titles { flex: 1; min-width: 0; }
.sim-insights-title { font-size: var(--fs-md); font-weight: 600; letter-spacing: var(--track-tight); }
.sim-insights-sub { margin-top: 2px; font-size: 12.5px; color: var(--ink-2); }
.sim-insights-body { display: grid; align-content: start; gap: 18px; padding: 16px 20px 20px; overflow-y: auto; overscroll-behavior: contain; }
.sim-in-loading { display: grid; gap: 14px; }
.sim-in-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  background: var(--success-tint);
  color: var(--success-ink);
  font-size: var(--fs-sm);
  font-weight: 600;
}
.sim-in-status.is-paused { background: var(--warning-tint); color: var(--warning-ink); }
.sim-in-status-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; flex: none; }
.sim-in-mini { margin-left: auto; color: inherit; font-size: var(--fs-xs); font-weight: 700; text-decoration: underline; }
.sim-in-revenue {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--purple);
  color: var(--cream-light);
  box-shadow: var(--shadow-2);
}
.sim-in-revenue-icon { display: grid; place-items: center; flex: none; width: 36px; height: 36px; border-radius: 12px; background: rgba(255, 255, 255, .14); color: var(--lavender); }
.sim-in-revenue-title { font-size: 15px; font-weight: 600; line-height: 1.3; }
.sim-in-revenue-sub { margin-top: 2px; font-size: var(--fs-xs); color: var(--on-dark-2); }
.sim-in-hint { display: flex; align-items: flex-start; gap: 8px; padding: 12px 14px; border-radius: var(--radius-sm); background: var(--cream-light); color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.45; }
.sim-in-hint svg { flex: none; margin-top: 1px; color: var(--purple); }
.sim-in-h { margin-bottom: 10px; font-family: var(--font-ui); font-size: 11.5px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); }
.sim-in-people { display: grid; gap: 10px; }
.sim-in-person { display: flex; align-items: center; gap: 10px; min-width: 0; }
.sim-in-person-main { min-width: 0; }
.sim-in-person-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; font-weight: 600; }
.sim-in-person-meta { font-size: var(--fs-xs); color: var(--ink-2); }
.sim-in-appts { display: grid; gap: 10px; }
.sim-in-appt {
  display: grid;
  gap: 4px;
  padding: 11px 12px 11px 14px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--doc);
  border-radius: 14px;
  animation: sim-in .3s var(--ease-out);
}
.sim-in-appt-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-width: 0; }
.sim-in-appt-when { min-width: 0; font-size: 14px; font-weight: 600; }
.sim-in-appt-what { font-size: 13px; color: var(--ink); }
.sim-in-appt-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; font-size: var(--fs-xs); color: var(--ink-2); }
.sim-in-price { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.sim-in-channel { display: inline-flex; align-items: center; gap: 3px; }
.sim-in-channel svg { color: var(--success-ink); }
.sim-in-link { display: inline-flex; align-items: center; gap: 5px; width: fit-content; margin-top: 2px; font-size: 12.5px; font-weight: 600; text-decoration: none; }
.sim-in-link:hover { text-decoration: underline; }
.sim-in-offer { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; border-radius: 14px; background: var(--success-tint); color: var(--success-ink); }
.sim-in-offer svg { flex: none; margin-top: 2px; }
.sim-in-offer-main { min-width: 0; font-size: var(--fs-sm); }
.sim-in-offer-when { font-weight: 600; }
.sim-in-offer-meta { font-size: var(--fs-xs); }
.sim-in-feed { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.sim-in-act { display: flex; gap: 10px; min-width: 0; }
.sim-in-act-dot { flex: none; width: 8px; height: 8px; margin-top: 6px; border-radius: 50%; background: var(--lavender); }
.sim-in-act.is-revenue .sim-in-act-dot { background: var(--green); box-shadow: 0 0 0 3px var(--success-tint); }
.sim-in-act-main { min-width: 0; }
.sim-in-act-title { font-size: 13px; line-height: 1.4; }
.sim-in-act-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 2px; font-size: var(--fs-xs); color: var(--ink-3); }
.sim-in-act-meta .badge { height: 20px; font-size: 11px; }
.sim-in-empty { font-size: var(--fs-sm); color: var(--ink-3); }
.sim-in-links { display: flex; flex-wrap: wrap; gap: 4px; padding-top: 12px; border-top: 1px solid var(--line-soft); }

.sim-new { display: grid; gap: 16px; }
.sim-new-text { color: var(--ink-2); font-size: 14px; }

.sim-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-overlay) - 1);
  background: rgba(22, 0, 85, .34);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-3) var(--ease);
}
.sim-backdrop.is-on { opacity: 1; pointer-events: auto; }

/* ---------------------------------------------------------------- wide: three columns */
@media (min-width: 1180px) {
  .sim.is-insights-open .sim-body { grid-template-columns: 320px minmax(0, 1fr) 360px; }
  .sim.is-insights-open .sim-insights { display: flex; }
}

/* ---------------------------------------------------------------- medium: explainer becomes a drawer */
@media (max-width: 1179px) {
  .sim-body { z-index: auto; }             /* no stacking context: the drawers must rise above the backdrop */
  .sim-insights {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-overlay);
    display: flex;
    width: min(400px, 92vw);
    max-height: none;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    box-shadow: var(--shadow-3);
    transform: translateX(105%);
    transition: transform var(--dur-3) var(--ease-out);
  }
  .sim.is-insights-drawer .sim-insights { transform: none; }
}

/* ---------------------------------------------------------------- phone-sized: the chat is the page */
@media (max-width: 859px) {
  .sim-top, .sim-footnote, .sim-glow { display: none; }
  .sim-body { display: block; padding: 0; }
  .sim-stage { display: block; }
  .sim-phone {
    width: 100%;
    height: 100vh;
    height: 100dvh;
    min-height: 0;
    padding: 0;
    border-radius: 0;
    background: none;
    box-shadow: none;
  }
  .sim-phone-screen { border-radius: 0; }
  .sim-chat-head { padding-top: calc(12px + var(--safe-top)); }
  .sim-people-btn { display: inline-flex; }
  .sim-people {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: var(--z-overlay);
    width: min(360px, 88vw);
    max-height: none;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    box-shadow: var(--shadow-3);
    transform: translateX(-105%);
    transition: transform var(--dur-3) var(--ease-out);
  }
  .sim.is-people-open .sim-people { transform: none; }
  .sim-people-head { padding-top: calc(20px + var(--safe-top)); }
  .sim-drawer-close { display: inline-flex; }
  .sim-row { max-width: 90%; }
  .sim-persona-phone { display: none; }
  .sim-actions { min-width: 200px; }
}

@media (prefers-reduced-motion: reduce) {
  .sim-live-dot, .sim-dots i { animation: none; }
}

/* personas drawer footer (phones only: the top bar is hidden there) */
.sim-people-foot { display: none; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 20px calc(12px + var(--safe-bottom)); border-top: 1px solid var(--line-soft); }
@media (max-width: 859px) {
  .sim-people-foot { display: flex; }
}
.sim-avatar-anon { background: color-mix(in srgb, var(--av) 18%, #fff); color: color-mix(in srgb, var(--av) 60%, var(--purple-dark)); }

/* Phone simulator: the typed-fallback send button must stand out on the dark call screen
   (inbox.css loads later, hence the extra specificity). */
form.ph-type-row .btn.btn-primary { background: var(--lavender); color: var(--purple-dark); border-color: transparent; }
form.ph-type-row .btn.btn-primary:hover { background: #fff; }