/* Nexus Core AI — Smart Informant Premium Conversation Interface v1 */
.nexus-si {
  --nca-si-primary: #111827;
  --nca-si-accent: #2563eb;
  --nca-si-surface: #ffffff;
  --nca-si-bg: transparent;
  --nca-si-text: #111827;
  --nca-si-muted: #667085;
  --nca-si-border: rgba(17, 24, 39, .12);
  --nca-si-soft: rgba(17, 24, 39, .045);
  --nca-si-radius: 28px;
  --nca-si-shadow: 0 24px 70px rgba(15, 23, 42, .14);
  --nca-si-focus: 0 0 0 3px rgba(37, 99, 235, .22);
  width: 100%;
  color: var(--nca-si-text);
  background: var(--nca-si-bg);
  font-family: Inter, Aptos, "Source Sans 3", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.nexus-si, .nexus-si * { box-sizing: border-box; }
.nexus-si button, .nexus-si textarea { font: inherit; }
.nexus-si__shell {
  width: min(100%, 880px);
  margin: 0 auto;
  padding: clamp(14px, 3vw, 28px);
}
.nexus-si--mode-standalone .nexus-si__shell { width: min(100%, 1120px); min-height: min(760px, 88vh); display: grid; align-items: stretch; }
.nexus-si__panel {
  width: 100%;
  min-height: 420px;
  display: grid;
  grid-template-rows: auto minmax(280px, 1fr) auto auto auto;
  overflow: hidden;
  border: 1px solid var(--nca-si-border);
  border-radius: var(--nca-si-radius);
  background: linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,255,255,.99)), var(--nca-si-surface);
  box-shadow: var(--nca-si-shadow);
}
.nexus-si--shadow-none .nexus-si__panel { box-shadow: none; }
.nexus-si--shadow-medium .nexus-si__panel { box-shadow: 0 32px 96px rgba(15, 23, 42, .18); }
.nexus-si--theme-premium_dark {
  --nca-si-primary: #f8fafc;
  --nca-si-accent: #93c5fd;
  --nca-si-surface: #0f172a;
  --nca-si-text: #f8fafc;
  --nca-si-muted: #cbd5e1;
  --nca-si-border: rgba(248, 250, 252, .16);
  --nca-si-soft: rgba(248, 250, 252, .08);
}
.nexus-si--theme-premium_dark .nexus-si__panel { background: linear-gradient(180deg, rgba(15,23,42,.96), rgba(15,23,42,.99)); }
.nexus-si__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--nca-si-border);
}
.nexus-si__identity { display: flex; align-items: center; gap: 12px; min-width: 0; flex: 1 1 auto; }
.nexus-si__avatar {
  width: 38px; height: 38px; border-radius: 999px; flex: 0 0 auto; object-fit: cover;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; background: var(--nca-si-primary); font-weight: 800; font-size: 12px; letter-spacing: .02em;
}
.nexus-si__avatar--text { text-transform: uppercase; }
.nexus-si--theme-premium_dark .nexus-si__avatar { color: #0f172a; background: #f8fafc; }
.nexus-si__copy { min-width: 0; display: grid; gap: 2px; }
.nexus-si__title { color: var(--nca-si-text); font-size: 15.5px; line-height: 1.25; letter-spacing: -.015em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nexus-si__subtitle { color: var(--nca-si-muted); font-size: 12.5px; line-height: 1.35; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nexus-si__header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex: 0 0 auto; min-width: 0; }
.nexus-si__source-pill {
  display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px; border-radius: 999px;
  color: var(--nca-si-muted); background: var(--nca-si-soft); border: 1px solid var(--nca-si-border); font-size: 11.5px; font-weight: 650;
}
.nexus-si__icon-button {
  width: 38px; height: 38px; min-width: 38px; min-height: 38px; padding: 0;
  border: 1px solid var(--nca-si-border); border-radius: 999px; background: var(--nca-si-surface); color: var(--nca-si-text); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px; line-height: 1; font-weight: 700; text-align: center;
  transition: border-color var(--nca-si-transition, 180ms ease), transform var(--nca-si-transition, 180ms ease), background var(--nca-si-transition, 180ms ease);
}
.nexus-si__messages {
  min-height: 340px;
  max-height: min(68vh, 720px);
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(18px, 3vw, 30px);
  scroll-behavior: smooth;
}
.nexus-si--mode-standalone .nexus-si__messages { min-height: min(520px, 68vh); }
.nexus-si__opening {
  width: min(100%, 680px);
  margin: auto auto;
  text-align: center;
  display: grid;
  gap: 18px;
  color: var(--nca-si-muted);
}
.nexus-si__opening-title { margin: 0; font-size: clamp(17px, 2vw, 22px); line-height: 1.6; letter-spacing: -.02em; color: var(--nca-si-text); }
.nexus-si__suggestions { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; }
.nexus-si__suggestion {
  appearance: none; border: 1px solid var(--nca-si-border); background: rgba(255,255,255,.84); color: var(--nca-si-text); border-radius: 999px; padding: 10px 13px; min-height: 40px; cursor: pointer; font-size: 13px;
  transition: border-color .16s ease, transform .16s ease, background .16s ease;
}
.nexus-si--theme-premium_dark .nexus-si__suggestion { background: rgba(255,255,255,.08); }
.nexus-si__suggestion:hover { transform: translateY(-1px); border-color: var(--nca-si-accent); }
.nexus-si__suggestion:focus-visible, .nexus-si__send:focus-visible, .nexus-si__launcher:focus-visible, .nexus-si__icon-button:focus-visible, .nexus-si__handoff-button:focus-visible { outline: none; box-shadow: var(--nca-si-focus); }
.nexus-si__message { display: grid; gap: 7px; max-width: min(84%, 760px); }
.nexus-si__message--user { align-self: flex-end; justify-items: end; }
.nexus-si__message--assistant { align-self: flex-start; justify-items: start; }
.nexus-si__bubble {
  padding: 13px 16px; border-radius: 21px; font-size: 15px; line-height: 1.65; white-space: normal; overflow-wrap: anywhere;
  color: var(--nca-si-text); background: var(--nca-si-soft); border: 1px solid rgba(17,24,39,.055);
}
.nexus-si__message--user .nexus-si__bubble { color: #fff; background: var(--nca-si-primary); border-color: transparent; border-bottom-right-radius: 8px; }
.nexus-si--theme-premium_dark .nexus-si__message--user .nexus-si__bubble { color: #0f172a; background: #f8fafc; }
.nexus-si__message--assistant .nexus-si__bubble { border-bottom-left-radius: 8px; }
.nexus-si__message[data-state="error"] .nexus-si__bubble { background: rgba(220, 38, 38, .08); border-color: rgba(220,38,38,.22); }
.nexus-si__message[data-state="fallback"] .nexus-si__bubble { background: rgba(73,167,220,.08); border-color: rgba(73,167,220,.18); }
.nexus-si__message[data-state="readback-required"] .nexus-si__bubble { background: rgba(73,167,220,.08); border-color: rgba(73,167,220,.20); }
.nexus-si__meta { color: var(--nca-si-muted); font-size: 11.5px; padding: 0 4px; }
.nexus-si__sources { max-width: 100%; font-size: 12.5px; color: var(--nca-si-muted); }
.nexus-si__sources summary { cursor: pointer; }
.nexus-si__sources a { color: var(--nca-si-accent); }
.nexus-si__handoff { display: grid; gap: 8px; padding: 12px; border: 1px solid var(--nca-si-border); border-radius: 18px; background: rgba(37, 99, 235, .06); }
.nexus-si__handoff p { margin: 0; font-size: 13px; color: var(--nca-si-muted); }
.nexus-si__handoff-button { justify-self: start; text-decoration: none; color: #fff; background: var(--nca-si-primary); border-radius: 999px; padding: 9px 13px; min-height: 38px; display: inline-flex; align-items: center; }
.nexus-si__thinking .nexus-si__bubble { display: flex; align-items: center; gap: 10px; }
.nexus-si__dots { display: inline-flex; gap: 4px; align-items: center; }
.nexus-si__dots i { display: block; width: 6px; height: 6px; border-radius: 999px; background: var(--nca-si-muted); animation: nca-si-dot 1s infinite ease-in-out; }
.nexus-si__dots i:nth-child(2) { animation-delay: .13s; }
.nexus-si__dots i:nth-child(3) { animation-delay: .26s; }
@keyframes nca-si-dot { 0%, 80%, 100% { transform: translateY(0); opacity: .45; } 40% { transform: translateY(-3px); opacity: 1; } }
.nexus-si__status { min-height: 0; padding: 0 22px 8px; color: var(--nca-si-muted); font-size: 12px; }
.nexus-si__status[hidden] { display: none; }
.nexus-si__status[data-state="error"] { color: #b91c1c; }
.nexus-si__status[data-state="success"] { color: #047857; }
.nexus-si__status[data-state="proof-required"], .nexus-si__status[data-state="readback-required"] { color: #153f63; }
.nexus-si__composer {
  display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: end; margin: 0 clamp(12px, 2.4vw, 22px) clamp(12px, 2.4vw, 22px); padding: 10px; border: 1px solid var(--nca-si-border); border-radius: 999px; background: rgba(255,255,255,.96); box-shadow: inset 0 1px 0 rgba(255,255,255,.85), 0 10px 28px rgba(15, 23, 42, .06);
}
.nexus-si--theme-premium_dark .nexus-si__composer { background: rgba(255,255,255,.07); }
.nexus-si__input {
  width: 100%; min-height: 28px; max-height: 180px; resize: none; border: 0; outline: 0; box-shadow: none; background: transparent; color: var(--nca-si-text); padding: 8px 6px 8px 12px; line-height: 1.45; font-size: 15px;
}
.nexus-si__input::placeholder { color: var(--nca-si-muted); opacity: .8; }
.nexus-si__send {
  width: 42px; height: 42px; border-radius: 999px; border: 0; background: var(--nca-si-primary); color: #fff; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; font-size: 20px; line-height: 1; flex: 0 0 auto;
}
.nexus-si--theme-premium_dark .nexus-si__send { background: #f8fafc; color: #0f172a; }
.nexus-si__send:disabled { opacity: .55; cursor: not-allowed; }
.nexus-si__note { margin: -8px 22px 18px; color: var(--nca-si-muted); font-size: 11.8px; line-height: 1.55; }
.nexus-si__launcher { display: none; position: relative; }
.nexus-si--mode-floating {
  position: fixed; right: max(18px, env(safe-area-inset-right)); bottom: max(18px, env(safe-area-inset-bottom)); width: auto; max-width: calc(100vw - 32px); z-index: 99999; pointer-events: none;
}
.nexus-si--mode-floating .nexus-si__launcher {
  pointer-events: auto; display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 10px 15px; border: 1px solid var(--nca-si-border); border-radius: 999px; color: #fff; background: var(--nca-si-primary); box-shadow: var(--nca-si-shadow); cursor: pointer;
}
.nexus-si--mode-floating .nexus-si__launcher-icon {
  width: 32px; height: 32px; border-radius: 999px; flex: 0 0 auto; object-fit: cover;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; background: rgba(255,255,255,.16); font-size: 12px; font-weight: 800; letter-spacing: .02em;
}
.nexus-si--mode-floating .nexus-si__launcher-icon--text { text-transform: uppercase; }
.nexus-si--mode-floating .nexus-si__launcher-text { font-weight: 700; font-size: 13.5px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nexus-si--mode-floating .nexus-si__shell { pointer-events: auto; width: min(410px, calc(100vw - 32px)); padding: 0; margin: 0 0 12px auto; transform-origin: bottom right; transition: opacity var(--nca-si-transition, 180ms ease), transform var(--nca-si-transition, 180ms ease), visibility var(--nca-si-transition, 180ms ease); }
.nexus-si--mode-floating .nexus-si__panel { min-height: 560px; max-height: min(720px, calc(100vh - 110px)); }
.nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__shell { display: none; }
.nexus-si--mode-floating[data-nexus-si-state="open"] .nexus-si__launcher { display: none; }
.screen-reader-text { position:absolute !important; width:1px !important; height:1px !important; padding:0 !important; margin:-1px !important; overflow:hidden !important; clip:rect(0,0,0,0) !important; white-space:nowrap !important; border:0 !important; }
@media (max-width: 720px) {
  .nexus-si__shell { padding: 10px; }
  .nexus-si__header { padding: 15px; }
  .nexus-si__subtitle, .nexus-si__source-pill { display: none; }
  .nexus-si__messages { min-height: 320px; max-height: 62vh; padding: 16px; }
  .nexus-si__message { max-width: 92%; }
  .nexus-si__composer { border-radius: 22px; align-items: center; }
}

/* Smart Informant UI State Blueprint v1 implementation mapping */
.nexus-si--blueprint-v1 {
  --nca-si-transition: 180ms ease;
}
.nexus-si__source-pill i {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
  display: inline-block;
  margin-right: 7px;
  box-shadow: 0 0 0 3px rgba(34,197,94,.14);
}
.nexus-si__icon-button:hover { border-color: var(--nca-si-accent); transform: translateY(-1px); }
.nexus-si[data-nexus-si-runtime-state="loading"] .nexus-si__panel { cursor: progress; }
.nexus-si[data-nexus-si-runtime-state="error"] .nexus-si__source-pill i { background: #ef4444; box-shadow: 0 0 0 3px rgba(239,68,68,.12); }
.nexus-si[data-nexus-si-runtime-state="fallback"] .nexus-si__source-pill i,
.nexus-si[data-nexus-si-runtime-state="proof-required"] .nexus-si__source-pill i,
.nexus-si[data-nexus-si-runtime-state="readback-required"] .nexus-si__source-pill i { background: #49a7dc; box-shadow: 0 0 0 3px rgba(73,167,220,.14); }
.nexus-si__launcher-badge {
  position: absolute;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  right: -5px;
  top: -6px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: #ef4444;
  border: 2px solid #fff;
  font-size: 11px;
  font-weight: 800;
}
.nexus-si__launcher-badge[hidden] { display: none; }
.nexus-si--mode-floating.nexus-si--position-left {
  left: max(18px, env(safe-area-inset-left));
  right: auto;
}
.nexus-si--mode-floating.nexus-si--position-left .nexus-si__shell { margin-left: 0; margin-right: auto; }
.nexus-si--mode-floating.nexus-si--position-left .nexus-si__shell { transform-origin: bottom left; }
.nexus-si--mode-floating[data-nexus-si-state="minimized"] .nexus-si__shell,
.nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__shell {
  opacity: 0;
  transform: translateY(14px) scale(.98);
  pointer-events: none;
  visibility: hidden;
  height: 0;
  overflow: hidden;
  margin: 0;
}
.nexus-si--mode-floating[data-nexus-si-state="minimized"] .nexus-si__launcher,
.nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__launcher {
  display: inline-flex;
}
.nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__launcher {
  width: 54px; height: 54px; min-width: 54px; padding: 0; justify-content: center;
}
.nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__launcher-text { display: none; }
.nexus-si--mode-floating[data-nexus-si-state="minimized"] .nexus-si__launcher {
  max-width: min(320px, calc(100vw - 32px)); justify-content: flex-start;
}
.nexus-si--mode-floating[data-nexus-si-state="open"] .nexus-si__shell {
  opacity: 1;
  transform: translateY(0) scale(1);
  visibility: visible;
}
.nexus-si__consent {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  align-items: end;
  padding: 18px;
  background: rgba(15, 23, 42, .12);
  backdrop-filter: blur(5px);
}
.nexus-si__consent-card {
  border: 1px solid var(--nca-si-border);
  border-radius: 20px;
  background: var(--nca-si-surface);
  color: var(--nca-si-text);
  padding: 16px;
  box-shadow: 0 18px 50px rgba(15,23,42,.14);
}
.nexus-si__consent-card p { margin: 7px 0 13px; color: var(--nca-si-muted); font-size: 13px; line-height: 1.5; }
.nexus-si__consent-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.nexus-si__consent-cancel {
  min-height: 38px;
  border-radius: 999px;
  border: 1px solid var(--nca-si-border);
  background: transparent;
  color: var(--nca-si-text);
  padding: 8px 13px;
  cursor: pointer;
}

@media (max-width: 560px) {
  .nexus-si--mode-floating .nexus-si__source-pill { display: none; }
  .nexus-si--mode-floating .nexus-si__header { gap: 10px; }
  .nexus-si--mode-floating .nexus-si__title { max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .nexus-si *, .nexus-si__shell { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media (max-width: 720px) {
  .nexus-si--mode-floating {
    left: 10px !important;
    right: 10px !important;
    bottom: max(10px, env(safe-area-inset-bottom));
  }
  .nexus-si--mode-floating .nexus-si__shell {
    width: 100%;
    margin: 0 0 10px 0;
    transform-origin: bottom center;
  }
  .nexus-si--mode-floating .nexus-si__panel {
    min-height: auto;
    height: min(78vh, 680px);
    border-radius: 26px 26px 20px 20px;
  }
  .nexus-si--mode-floating .nexus-si__messages { max-height: none; min-height: 0; }
  .nexus-si--mode-floating .nexus-si__launcher { width: auto; max-width: 100%; justify-self: center; justify-content: center; margin-left: auto; margin-right: auto; }
}

/* Controlled Smart Informant Contract & Preview Truth Fix */
.nexus-si--bubble-soft .nexus-si__bubble { border-radius: 24px; background: rgba(37, 99, 235, .055); }
.nexus-si--bubble-minimal .nexus-si__bubble { border-radius: 16px; border-color: transparent; background: transparent; box-shadow: inset 0 0 0 1px var(--nca-si-border); }
.nexus-si--composer-soft_box .nexus-si__composer { border-radius: 22px; background: var(--nca-si-soft); box-shadow: none; }
.nexus-si--composer-minimal_line .nexus-si__composer { border-radius: 0; border-width: 0 0 1px; background: transparent; box-shadow: none; padding-left: 0; padding-right: 0; }
.nexus-si--send-text .nexus-si__send,
.nexus-si--send-text_icon .nexus-si__send { width: auto; min-width: 74px; padding: 0 15px; gap: 8px; font-size: 14px; font-weight: 750; }
.nexus-si__send-label { line-height: 1; }
.nexus-si--loading-text .nexus-si__thinking .nexus-si__bubble { min-height: 42px; }
.nexus-si__skeleton { display:block; width: 180px; max-width: 50vw; height: 10px; border-radius: 999px; background: linear-gradient(90deg, var(--nca-si-soft), rgba(148,163,184,.25), var(--nca-si-soft)); background-size: 200% 100%; animation: nca-si-skeleton 1.2s infinite ease-in-out; }
.nexus-si__skeleton--short { width: 115px; margin-top: 9px; }
@keyframes nca-si-skeleton { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.nexus-si--mode-floating .nexus-si__shell[aria-hidden="true"] { pointer-events: none; }
.nexus-si__consent-card:focus { outline: none; box-shadow: var(--nca-si-focus), 0 18px 50px rgba(15,23,42,.14); }

/* Display Location Truth Fix v1 — device visibility and footer-hook containment */
@media (min-width: 1025px) {
  .nexus-si.nexus-si--hide-desktop { display: none !important; }
}
@media (min-width: 768px) and (max-width: 1024px) {
  .nexus-si.nexus-si--hide-tablet { display: none !important; }
}
@media (max-width: 767px) {
  .nexus-si.nexus-si--hide-mobile { display: none !important; }
}
.nexus-si.nexus-si--footer-hook {
  position: relative;
  z-index: 1;
  margin: clamp(24px, 5vw, 56px) auto;
  padding-inline: clamp(12px, 4vw, 28px);
}
.nexus-si.nexus-si--footer-hook .nexus-si__shell {
  width: min(100%, 960px);
}

/* Stage 5 — Smart Informant Interface Final UX Polish v1 */
.nexus-si[data-nexus-si-interface-ux="SMART_INFORMANT_INTERFACE_FINAL_UX_POLISH_V1"] .nexus-si__panel {
  isolation: isolate;
}
.nexus-si__opening-hint {
  margin: -8px auto 0;
  max-width: 560px;
  color: var(--nca-si-muted);
  font-size: 13px;
  line-height: 1.55;
}
.nexus-si__composer:focus-within {
  border-color: var(--nca-si-accent);
  box-shadow: var(--nca-si-focus), inset 0 1px 0 rgba(255,255,255,.85), 0 10px 28px rgba(15, 23, 42, .06);
}
.nexus-si__input:placeholder-shown {
  text-overflow: ellipsis;
}
.nexus-si__send {
  transition: transform var(--nca-si-transition, 180ms ease), opacity var(--nca-si-transition, 180ms ease), background var(--nca-si-transition, 180ms ease);
}
.nexus-si__send:not(:disabled):hover {
  transform: translateY(-1px);
}
.nexus-si__send:not(:disabled):active {
  transform: translateY(0) scale(.98);
}
.nexus-si__message[data-state="answer"] .nexus-si__bubble {
  background: rgba(17, 24, 39, .035);
}
.nexus-si--theme-premium_dark .nexus-si__message[data-state="answer"] .nexus-si__bubble {
  background: rgba(255,255,255,.08);
}
.nexus-si__meta:empty,
.nexus-si__status:empty {
  display: none;
}
.nexus-si__note {
  max-width: calc(100% - 44px);
}
@media (max-width: 720px) {
  .nexus-si__opening { gap: 12px; }
  .nexus-si__opening-title { font-size: 16.5px; line-height: 1.5; }
  .nexus-si__opening-hint { font-size: 12.5px; }
  .nexus-si__composer { margin-inline: 12px; }
  .nexus-si__send { width: 44px; height: 44px; }
  .nexus-si__note { margin: -6px 16px 16px; max-width: none; }
}



/* STAGE 7 — Modern AI Interface Simplification v2
 * Scope: presentation-only frontend UI polish for Smart Informant.
 * Boundary: no corpus, retrieval, REST answer logic, database schema, or action handler changes.
 */
.nexus-si {
  --nca-si-radius: clamp(18px, 1.8vw, 24px);
  --nca-si-panel-width: min(430px, calc(100vw - 32px));
  --nca-si-shadow: 0 18px 54px rgba(15, 23, 42, .14);
  --nca-si-soft: color-mix(in srgb, var(--nca-si-primary) 5%, transparent);
  --nca-si-trans-fast: 150ms cubic-bezier(.2,.7,.2,1);
  --nca-si-trans-smooth: 220ms cubic-bezier(.2,.7,.2,1);
  --nca-si-ai-glyph: "";
}
.nexus-si--theme-inherit,
.nexus-si--theme-premium_light,
.nexus-si--theme-neutral,
.nexus-si--theme-brand {
  --nca-si-primary: #111827;
  --nca-si-accent: #49a7dc;
  --nca-si-surface: #ffffff;
  --nca-si-text: #111827;
  --nca-si-muted: #667085;
  --nca-si-border: rgba(17, 24, 39, .115);
  --nca-si-soft: rgba(17, 24, 39, .036);
}
.nexus-si--theme-premium_dark {
  --nca-si-primary: #f8fafc;
  --nca-si-accent: #49a7dc;
  --nca-si-surface: #07111f;
  --nca-si-text: #f8fafc;
  --nca-si-muted: #a7b0c0;
  --nca-si-border: rgba(248, 250, 252, .13);
  --nca-si-soft: rgba(248, 250, 252, .07);
  --nca-si-shadow: 0 18px 60px rgba(2, 6, 23, .36);
}
.nexus-si__panel {
  border-radius: var(--nca-si-radius);
  background:
    linear-gradient(180deg, rgba(255,255,255,.985), rgba(255,255,255,.97)),
    var(--nca-si-surface);
  border: 1px solid var(--nca-si-border);
  box-shadow: var(--nca-si-shadow);
  grid-template-rows: auto minmax(280px, 1fr) auto auto auto;
  isolation: isolate;
}
.nexus-si--theme-premium_dark .nexus-si__panel {
  background:
    radial-gradient(circle at 18% 0%, rgba(215,168,76,.13), transparent 34%),
    linear-gradient(180deg, rgba(7,17,31,.985), rgba(8,14,25,.99));
}
.nexus-si__header {
  min-height: 74px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--nca-si-border);
  backdrop-filter: blur(10px);
}
.nexus-si__identity { gap: 11px; }
.nexus-si__avatar,
.nexus-si--mode-floating .nexus-si__launcher-icon {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--nca-si-accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--nca-si-accent) 38%, transparent);
  color: var(--nca-si-accent);
  box-shadow: none;
}
.nexus-si__avatar--text,
.nexus-si--mode-floating .nexus-si__launcher-icon--text {
  color: transparent;
  font-size: 0;
  position: relative;
}
.nexus-si__avatar--text::before,
.nexus-si--mode-floating .nexus-si__launcher-icon--text::before {
  content: var(--nca-si-ai-glyph);
  color: var(--nca-si-accent);
  font-size: 17px;
  line-height: 1;
}
.nexus-si__title {
  font-size: 15px;
  letter-spacing: -.02em;
  font-weight: 720;
}
.nexus-si__subtitle {
  font-size: 12px;
  color: var(--nca-si-muted);
  max-width: 230px;
}
.nexus-si__header-actions { gap: 6px; }
.nexus-si__source-pill {
  min-height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 650;
  background: color-mix(in srgb, var(--nca-si-accent) 10%, transparent);
  border-color: color-mix(in srgb, var(--nca-si-accent) 26%, transparent);
  color: color-mix(in srgb, var(--nca-si-accent) 80%, var(--nca-si-text));
}
.nexus-si__source-pill i { background: #22c55e; }
.nexus-si__icon-button {
  width: 34px;
  height: 34px;
  min-width: 34px;
  min-height: 34px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--nca-si-text) 4%, transparent);
  font-size: 16px;
  font-weight: 650;
}
.nexus-si__icon-button:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--nca-si-accent) 10%, transparent);
}
.nexus-si__messages {
  gap: 14px;
  padding: 20px 18px 18px;
  scrollbar-width: thin;
}
.nexus-si__opening {
  margin: 0;
  width: 100%;
  text-align: left;
  gap: 12px;
  align-self: start;
}
.nexus-si__opening-title {
  font-size: 14.5px;
  line-height: 1.65;
  letter-spacing: -.01em;
  padding: 16px;
  border: 1px solid var(--nca-si-border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--nca-si-surface) 80%, var(--nca-si-soft));
}
.nexus-si--theme-premium_dark .nexus-si__opening-title {
  background: rgba(255,255,255,.055);
}
.nexus-si__opening-hint {
  margin: 0;
  font-size: 12.25px;
  color: var(--nca-si-muted);
}
.nexus-si__suggestions {
  justify-content: flex-start;
  gap: 8px;
}
.nexus-si__suggestion {
  min-height: 32px;
  padding: 7px 10px;
  border-radius: 999px;
  background: transparent;
  font-size: 12.25px;
  line-height: 1.2;
  color: var(--nca-si-text);
  border-color: var(--nca-si-border);
}
.nexus-si__suggestion:hover {
  transform: none;
  background: color-mix(in srgb, var(--nca-si-accent) 8%, transparent);
}
.nexus-si__message {
  max-width: min(86%, 720px);
  gap: 6px;
}
.nexus-si__bubble {
  border-radius: 16px;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.62;
  background: color-mix(in srgb, var(--nca-si-text) 4%, transparent);
  border-color: color-mix(in srgb, var(--nca-si-text) 8%, transparent);
}
.nexus-si__message--user .nexus-si__bubble {
  border-radius: 16px 16px 5px 16px;
  color: var(--nca-si-text);
  background: color-mix(in srgb, var(--nca-si-accent) 12%, var(--nca-si-surface));
  border: 1px solid color-mix(in srgb, var(--nca-si-accent) 22%, transparent);
}
.nexus-si--theme-premium_dark .nexus-si__message--user .nexus-si__bubble {
  color: #f8fafc;
  background: rgba(148,163,184,.17);
  border-color: rgba(255,255,255,.08);
}
.nexus-si__message--assistant .nexus-si__bubble {
  border-radius: 16px 16px 16px 5px;
}
.nexus-si__message-label {
  display: block;
  margin: 0 4px 2px;
  color: color-mix(in srgb, var(--nca-si-accent) 78%, var(--nca-si-text));
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: -.01em;
}
.nexus-si__source-proof,
.nexus-si__sources {
  width: 100%;
  border: 1px solid var(--nca-si-border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--nca-si-surface) 90%, var(--nca-si-soft));
  color: var(--nca-si-muted);
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.45;
}
.nexus-si--theme-premium_dark .nexus-si__source-proof,
.nexus-si--theme-premium_dark .nexus-si__sources {
  background: rgba(255,255,255,.055);
}
.nexus-si__source-proof-main {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  color: var(--nca-si-text);
  font-weight: 650;
}
.nexus-si__source-proof-main::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  margin-right: 7px;
  color: #047857;
  background: rgba(16,185,129,.12);
  flex: 0 0 auto;
}
.nexus-si__source-proof-note { display: block; margin-top: 3px; }
.nexus-si__sources summary {
  font-weight: 650;
  color: var(--nca-si-text);
  list-style: none;
}
.nexus-si__sources summary::-webkit-details-marker { display: none; }
.nexus-si__sources summary::before {
  content: "✓";
  color: #047857;
  margin-right: 7px;
}
.nexus-si__sources ul { margin: 9px 0 0 18px; padding: 0; }
.nexus-si__thinking .nexus-si__bubble {
  min-width: 156px;
  color: var(--nca-si-muted);
  background: transparent;
  border-color: transparent;
  padding-left: 2px;
}
.nexus-si__dots i {
  width: 5px;
  height: 5px;
  background: var(--nca-si-accent);
}
.nexus-si__status {
  padding: 0 18px 8px;
  font-size: 11.5px;
  opacity: .82;
}
.nexus-si__composer {
  margin: 0 18px 14px;
  padding: 7px;
  gap: 8px;
  border-radius: 20px;
  align-items: center;
  background: color-mix(in srgb, var(--nca-si-surface) 94%, var(--nca-si-soft));
  box-shadow: none;
}
.nexus-si--theme-premium_dark .nexus-si__composer {
  background: rgba(255,255,255,.055);
}
.nexus-si__input {
  min-height: 34px;
  padding: 8px 8px 8px 12px;
  font-size: 14px;
}
.nexus-si__send {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  color: #ffffff;
  background: var(--nca-si-primary);
  font-size: 18px;
  transition: transform var(--nca-si-trans-fast), background var(--nca-si-trans-fast), opacity var(--nca-si-trans-fast);
}
.nexus-si--theme-premium_dark .nexus-si__send {
  background: var(--nca-si-accent);
  color: #101827;
}
.nexus-si__send:hover:not(:disabled) { transform: translateY(-1px); }
.nexus-si__note {
  margin: 0 18px 16px;
  padding-top: 2px;
  font-size: 11.25px;
  color: var(--nca-si-muted);
}
.nexus-si--mode-floating {
  right: max(22px, env(safe-area-inset-right));
  bottom: max(22px, env(safe-area-inset-bottom));
}
.nexus-si--mode-floating .nexus-si__shell {
  width: var(--nca-si-panel-width);
  margin-bottom: 12px;
}
.nexus-si--mode-floating .nexus-si__panel {
  min-height: min(620px, calc(100vh - 118px));
  max-height: min(720px, calc(100vh - 118px));
}
.nexus-si--mode-floating .nexus-si__launcher {
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--nca-si-primary) 96%, #000000);
  border-color: color-mix(in srgb, var(--nca-si-accent) 34%, transparent);
  color: #fff;
  box-shadow: 0 12px 36px rgba(15,23,42,.18);
}
.nexus-si--mode-floating .nexus-si__launcher:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--nca-si-accent) 56%, transparent);
}
.nexus-si--mode-floating .nexus-si__launcher-text {
  font-size: 13px;
  font-weight: 720;
  letter-spacing: -.01em;
}
.nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__launcher {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 16px;
}
.nexus-si--theme-premium_dark.nexus-si--mode-floating .nexus-si__launcher {
  background: #07111f;
}
.nexus-si--mode-floating[data-nexus-si-state="open"] .nexus-si__shell {
  animation: nca-si-open-modern .22s cubic-bezier(.2,.7,.2,1) both;
}
@keyframes nca-si-open-modern {
  from { opacity: 0; transform: translateY(10px) scale(.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@media (max-width: 720px) {
  .nexus-si--mode-floating {
    right: 10px;
    left: 10px;
    bottom: max(10px, env(safe-area-inset-bottom));
    max-width: none;
  }
  .nexus-si--mode-floating .nexus-si__shell,
  .nexus-si--mode-floating.nexus-si--position-left .nexus-si__shell {
    width: 100%;
    margin: 0 0 10px 0;
  }
  .nexus-si--mode-floating .nexus-si__panel {
    min-height: min(660px, calc(100vh - 92px));
    max-height: min(660px, calc(100vh - 92px));
    border-radius: 22px;
  }
  .nexus-si__header { padding: 14px; }
  .nexus-si__messages { min-height: 300px; max-height: 58vh; padding: 15px; }
  .nexus-si__message { max-width: 94%; }
  .nexus-si__composer { margin: 0 14px 12px; border-radius: 18px; }
  .nexus-si__note { margin: 0 14px 14px; }
  .nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__launcher,
  .nexus-si--mode-floating[data-nexus-si-state="minimized"] .nexus-si__launcher {
    margin-left: auto;
  }
}
@media (prefers-reduced-motion: reduce) {
  .nexus-si *, .nexus-si *::before, .nexus-si *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}


/* STAGE 7A — Smart Informant Visual Parity Implementation v1
 * Frontend presentation only. It intentionally overrides legacy chatbot-like
 * surfaces without changing transport, retrieval, corpus, or answer logic.
 */
.nexus-si--visual-parity-v1 {
  --nca-si-panel-width: min(408px, calc(100vw - 28px));
  --nca-si-radius: clamp(18px, 1.8vw, 24px);
  --nca-si-transition: 170ms cubic-bezier(.2,.7,.2,1);
  --nca-si-ease: cubic-bezier(.2,.7,.2,1);
  --nca-si-line: color-mix(in srgb, var(--nca-si-text) 11%, transparent);
  --nca-si-chip: color-mix(in srgb, var(--nca-si-surface) 86%, var(--nca-si-text) 4%);
  --nca-si-user: color-mix(in srgb, var(--nca-si-accent) 12%, var(--nca-si-surface));
  --nca-si-assistant: color-mix(in srgb, var(--nca-si-surface) 94%, var(--nca-si-text) 4%);
  --nca-si-proof: color-mix(in srgb, #10b981 8%, var(--nca-si-surface));
  letter-spacing: -0.01em;
}
.nexus-si--visual-parity-v1.nexus-si--theme-inherit,
.nexus-si--visual-parity-v1.nexus-si--theme-premium_light,
.nexus-si--visual-parity-v1.nexus-si--theme-brand,
.nexus-si--visual-parity-v1.nexus-si--theme-neutral {
  --nca-si-primary: #101828;
  --nca-si-accent: var(--nca-si-accent, #49a7dc);
  --nca-si-surface: #ffffff;
  --nca-si-text: #172033;
  --nca-si-muted: #667085;
  --nca-si-border: rgba(16,24,40,.12);
  --nca-si-soft: rgba(16,24,40,.045);
  --nca-si-shadow: 0 26px 84px rgba(16,24,40,.14);
}
.nexus-si--visual-parity-v1.nexus-si--theme-premium_dark {
  --nca-si-primary: #f8fafc;
  --nca-si-accent: #49a7dc;
  --nca-si-surface: #07111f;
  --nca-si-text: #f8fafc;
  --nca-si-muted: #aab6c7;
  --nca-si-border: rgba(255,255,255,.12);
  --nca-si-soft: rgba(255,255,255,.06);
  --nca-si-line: rgba(255,255,255,.10);
  --nca-si-chip: rgba(255,255,255,.055);
  --nca-si-user: rgba(148,163,184,.17);
  --nca-si-assistant: rgba(255,255,255,.075);
  --nca-si-proof: rgba(16,185,129,.10);
  --nca-si-shadow: 0 28px 92px rgba(0,0,0,.38);
}
.nexus-si--visual-parity-v1 .nexus-si__panel {
  min-height: min(620px, calc(100vh - 116px));
  max-height: min(720px, calc(100vh - 116px));
  display: grid;
  grid-template-rows: auto minmax(270px, 1fr) auto auto auto;
  border-radius: var(--nca-si-radius);
  border: 1px solid var(--nca-si-border);
  background: var(--nca-si-surface);
  box-shadow: var(--nca-si-shadow);
  overflow: hidden;
  isolation: isolate;
}
.nexus-si--visual-parity-v1.nexus-si--theme-premium_dark .nexus-si__panel {
  background:
    radial-gradient(circle at 18% 0%, rgba(73,167,220,.10), transparent 33%),
    linear-gradient(180deg, #081321 0%, #07111f 100%);
}
.nexus-si--visual-parity-v1 .nexus-si__header {
  min-height: 72px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--nca-si-line);
  background: color-mix(in srgb, var(--nca-si-surface) 96%, var(--nca-si-soft));
}
.nexus-si--visual-parity-v1.nexus-si--theme-premium_dark .nexus-si__header {
  background: rgba(255,255,255,.018);
}
.nexus-si--visual-parity-v1 .nexus-si__identity { gap: 11px; }
.nexus-si--visual-parity-v1 .nexus-si__avatar,
.nexus-si--visual-parity-v1 .nexus-si__launcher-mark {
  width: 31px;
  height: 31px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  color: var(--nca-si-accent);
  background: color-mix(in srgb, var(--nca-si-accent) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--nca-si-accent) 22%, transparent);
  font-weight: 800;
  box-shadow: none;
}
.nexus-si--visual-parity-v1 .nexus-si__avatar img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; }
.nexus-si--visual-parity-v1 .nexus-si__title {
  font-size: 15.5px;
  line-height: 1.2;
  font-weight: 760;
  letter-spacing: -.02em;
}
.nexus-si--visual-parity-v1 .nexus-si__subtitle {
  margin-top: 2px;
  font-size: 12.25px;
  line-height: 1.35;
  color: var(--nca-si-muted);
}
.nexus-si--visual-parity-v1 .nexus-si__source-pill {
  height: 28px;
  min-height: 28px;
  padding: 0 9px;
  border-radius: 10px;
  font-size: 0;
  background: transparent;
  border-color: var(--nca-si-line);
}
.nexus-si--visual-parity-v1 .nexus-si__source-pill::after {
  content: "Verified";
  font-size: 11px;
  font-weight: 680;
  color: var(--nca-si-muted);
}
.nexus-si--visual-parity-v1 .nexus-si__source-pill i { width: 7px; height: 7px; margin-right: 6px; }
.nexus-si--visual-parity-v1 .nexus-si__icon-button {
  width: 34px;
  height: 34px;
  min-width: 34px;
  min-height: 34px;
  border-radius: 12px;
  background: transparent;
  border-color: var(--nca-si-line);
  font-size: 16px;
  opacity: .92;
}
.nexus-si--visual-parity-v1 .nexus-si__icon-button:hover { background: var(--nca-si-soft); transform: none; }
.nexus-si--visual-parity-v1 .nexus-si__messages {
  padding: 18px;
  gap: 14px;
  min-height: 300px;
  max-height: min(62vh, 560px);
}
.nexus-si--visual-parity-v1 .nexus-si__opening {
  margin: 0;
  width: 100%;
  align-self: start;
  text-align: left;
  gap: 12px;
}
.nexus-si--visual-parity-v1 .nexus-si__opening-title {
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--nca-si-text);
  font-size: 15px;
  line-height: 1.62;
  font-weight: 580;
}
.nexus-si--visual-parity-v1 .nexus-si__opening-title::before {
  content: none;
  display: inline-flex;
  margin-right: 8px;
  color: var(--nca-si-accent);
}
.nexus-si--visual-parity-v1 .nexus-si__opening-hint { max-width: 92%; font-size: 12.2px; line-height: 1.5; }
.nexus-si--visual-parity-v1 .nexus-si__suggestions {
  display: flex;
  justify-content: flex-start;
  gap: 7px;
  flex-wrap: wrap;
}
.nexus-si--visual-parity-v1 .nexus-si__suggestion {
  min-height: 31px;
  padding: 6px 10px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--nca-si-line);
  color: color-mix(in srgb, var(--nca-si-text) 84%, var(--nca-si-muted));
  font-size: 12px;
  font-weight: 560;
}
.nexus-si--visual-parity-v1 .nexus-si__suggestion:hover { background: var(--nca-si-chip); border-color: color-mix(in srgb, var(--nca-si-accent) 42%, var(--nca-si-line)); }
.nexus-si--visual-parity-v1 .nexus-si__message {
  max-width: min(88%, 680px);
  gap: 6px;
}
.nexus-si--visual-parity-v1 .nexus-si__message-label {
  margin: 0 2px 2px;
  color: var(--nca-si-muted);
  font-size: 11px;
  font-weight: 680;
}
.nexus-si--visual-parity-v1 .nexus-si__bubble {
  padding: 11px 13px;
  border-radius: 15px;
  font-size: 13.6px;
  line-height: 1.62;
  border: 1px solid var(--nca-si-line);
  background: var(--nca-si-assistant);
  color: var(--nca-si-text);
}
.nexus-si--visual-parity-v1 .nexus-si__message--user .nexus-si__bubble {
  border-radius: 15px 15px 5px 15px;
  background: var(--nca-si-user);
  color: var(--nca-si-text);
  border-color: color-mix(in srgb, var(--nca-si-accent) 20%, var(--nca-si-line));
}
.nexus-si--visual-parity-v1.nexus-si--theme-premium_dark .nexus-si__message--user .nexus-si__bubble { color: #f8fafc; }
.nexus-si--visual-parity-v1 .nexus-si__message--assistant .nexus-si__bubble { border-radius: 15px 15px 15px 5px; }
.nexus-si--visual-parity-v1 .nexus-si__source-proof,
.nexus-si--visual-parity-v1 .nexus-si__sources {
  width: 100%;
  padding: 10px 12px;
  border-radius: 13px;
  border: 1px solid color-mix(in srgb, #10b981 20%, var(--nca-si-line));
  background: var(--nca-si-proof);
  color: var(--nca-si-muted);
  font-size: 11.75px;
  line-height: 1.44;
}
.nexus-si--visual-parity-v1 .nexus-si__source-proof-main {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 7px;
  color: var(--nca-si-text);
  font-size: 12px;
  font-weight: 720;
}
.nexus-si--visual-parity-v1 .nexus-si__source-proof-main::before,
.nexus-si--visual-parity-v1 .nexus-si__sources summary::before {
  content: "✓";
  width: 17px;
  height: 17px;
  margin-right: 0;
  border-radius: 999px;
  color: #047857;
  background: rgba(16,185,129,.13);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}
.nexus-si--visual-parity-v1 .nexus-si__source-proof-note { margin-top: 2px; padding-left: 24px; }
.nexus-si--visual-parity-v1 .nexus-si__thinking .nexus-si__bubble {
  background: transparent;
  border-color: transparent;
  padding: 4px 2px;
  color: var(--nca-si-muted);
}
.nexus-si--visual-parity-v1 .nexus-si__dots i {
  width: 4.5px;
  height: 4.5px;
  background: color-mix(in srgb, var(--nca-si-accent) 55%, var(--nca-si-muted));
}
.nexus-si--visual-parity-v1 .nexus-si__status {
  padding: 0 18px 8px;
  font-size: 11.5px;
  line-height: 1.45;
}
.nexus-si--visual-parity-v1 .nexus-si__composer {
  margin: 0 18px 14px;
  padding: 7px 7px 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--nca-si-line);
  background: color-mix(in srgb, var(--nca-si-surface) 94%, var(--nca-si-soft));
  box-shadow: none;
}
.nexus-si--visual-parity-v1.nexus-si--theme-premium_dark .nexus-si__composer { background: rgba(255,255,255,.045); }
.nexus-si--visual-parity-v1 .nexus-si__input {
  min-height: 32px;
  padding: 6px 4px 6px 2px;
  font-size: 13.5px;
  line-height: 1.45;
}
.nexus-si--visual-parity-v1 .nexus-si__send {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--nca-si-accent);
  color: #111827;
  font-size: 18px;
  transform: rotate(0deg);
  transition: transform var(--nca-si-transition), filter var(--nca-si-transition), opacity var(--nca-si-transition);
}
.nexus-si--visual-parity-v1 .nexus-si__send:hover { filter: brightness(1.04); transform: translateY(-1px); }
.nexus-si--visual-parity-v1 .nexus-si__note {
  margin: 0 18px 16px;
  color: var(--nca-si-muted);
  font-size: 11px;
  line-height: 1.48;
  text-align: center;
}
.nexus-si--visual-parity-v1.nexus-si--mode-floating {
  right: max(22px, env(safe-area-inset-right));
  bottom: max(22px, env(safe-area-inset-bottom));
  max-width: calc(100vw - 32px);
}
.nexus-si--visual-parity-v1.nexus-si--mode-floating .nexus-si__shell {
  width: var(--nca-si-panel-width);
  margin: 0 0 12px auto;
  padding: 0;
}
.nexus-si--visual-parity-v1.nexus-si--mode-floating[data-nexus-si-state="closed"] .nexus-si__shell,
.nexus-si--visual-parity-v1.nexus-si--mode-floating[data-nexus-si-state="minimized"] .nexus-si__shell { display: none; }
.nexus-si--visual-parity-v1.nexus-si--mode-floating .nexus-si__launcher {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 172px;
  width: auto !important;
  height: 44px !important;
  min-height: 44px;
  padding: 7px 11px 7px 8px;
  margin-left: auto;
  border-radius: 999px !important;
  border: 1px solid color-mix(in srgb, var(--nca-si-accent) 38%, var(--nca-si-line));
  background: var(--nca-si-surface);
  color: var(--nca-si-text);
  box-shadow: 0 18px 52px rgba(15,23,42,.16);
  transition: transform var(--nca-si-transition), box-shadow var(--nca-si-transition), border-color var(--nca-si-transition);
}
.nexus-si--visual-parity-v1.nexus-si--mode-floating .nexus-si__launcher:hover {
  transform: translateY(-1px);
  box-shadow: 0 22px 60px rgba(15,23,42,.18);
  border-color: color-mix(in srgb, var(--nca-si-accent) 62%, var(--nca-si-line));
}
.nexus-si--visual-parity-v1.nexus-si--theme-premium_dark.nexus-si--mode-floating .nexus-si__launcher {
  background: #081321;
  color: #f8fafc;
  box-shadow: 0 22px 60px rgba(0,0,0,.32);
}
.nexus-si--visual-parity-v1 .nexus-si__launcher-text {
  display: inline-flex !important;
  font-size: 13px;
  font-weight: 760;
  letter-spacing: -.01em;
  white-space: nowrap;
}
.nexus-si--visual-parity-v1 .nexus-si__launcher-state {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 24px;
  padding: 0 7px;
  border-radius: 999px;
  color: var(--nca-si-muted);
  background: var(--nca-si-soft);
  border: 1px solid var(--nca-si-line);
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: .02em;
}
.nexus-si--visual-parity-v1 .nexus-si__launcher-badge { top: -4px; right: -4px; }
.nexus-si--visual-parity-v1[data-nexus-si-state="open"] .nexus-si__shell {
  animation: nca-si-visual-parity-open .18s var(--nca-si-ease) both;
}
@keyframes nca-si-visual-parity-open {
  from { opacity: 0; transform: translateY(8px) scale(.988); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@media (max-width: 720px) {
  .nexus-si--visual-parity-v1.nexus-si--mode-floating {
    left: 10px;
    right: 10px;
    bottom: max(10px, env(safe-area-inset-bottom));
    max-width: none;
  }
  .nexus-si--visual-parity-v1.nexus-si--mode-floating .nexus-si__shell,
  .nexus-si--visual-parity-v1.nexus-si--mode-floating.nexus-si--position-left .nexus-si__shell {
    width: 100%;
    margin: 0 0 10px 0;
  }
  .nexus-si--visual-parity-v1 .nexus-si__panel {
    min-height: min(650px, calc(100vh - 88px));
    max-height: min(650px, calc(100vh - 88px));
    border-radius: 20px;
  }
  .nexus-si--visual-parity-v1 .nexus-si__header { padding: 14px; }
  .nexus-si--visual-parity-v1 .nexus-si__source-pill::after { content: "Verified"; }
  .nexus-si--visual-parity-v1 .nexus-si__messages { padding: 14px; max-height: 58vh; }
  .nexus-si--visual-parity-v1 .nexus-si__message { max-width: 94%; }
  .nexus-si--visual-parity-v1 .nexus-si__composer { margin: 0 14px 12px; }
  .nexus-si--visual-parity-v1 .nexus-si__note { margin: 0 14px 14px; }
  .nexus-si--visual-parity-v1.nexus-si--mode-floating .nexus-si__launcher { min-width: 164px; }
}


/* STAGE 7B — Explicit Light/Dark Mode + No Default Source Proof Box
   Frontend presentation only. Keeps source/citation details opt-in and removes
   the old verification card from the default chat surface. */
.nexus-si--theme-switchable-v2 .nexus-si__theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
  border: 1px solid var(--nca-si-line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--nca-si-soft) 72%, transparent);
}
.nexus-si--theme-switchable-v2 .nexus-si__theme-option {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 5px 9px;
  background: transparent;
  color: var(--nca-si-muted);
  font: inherit;
  font-size: 11px;
  font-weight: 720;
  line-height: 1;
  cursor: pointer;
  transition: background var(--nca-si-transition), color var(--nca-si-transition), transform var(--nca-si-transition);
}
.nexus-si--theme-switchable-v2 .nexus-si__theme-option:hover { transform: translateY(-1px); color: var(--nca-si-text); }
.nexus-si--theme-switchable-v2 .nexus-si__theme-option[data-active="1"],
.nexus-si--theme-switchable-v2 .nexus-si__theme-option[aria-pressed="true"] {
  background: var(--nca-si-text);
  color: var(--nca-si-surface);
}
.nexus-si--theme-switchable-v2.nexus-si--theme-premium_dark .nexus-si__theme-switch { background: rgba(255,255,255,.055); border-color: rgba(255,255,255,.12); }
.nexus-si--theme-switchable-v2.nexus-si--theme-premium_dark .nexus-si__theme-option[data-active="1"],
.nexus-si--theme-switchable-v2.nexus-si--theme-premium_dark .nexus-si__theme-option[aria-pressed="true"] { background: #f8fafc; color: #07111f; }
.nexus-si--theme-switchable-v2 .nexus-si__source-proof { display: none !important; }
.nexus-si--theme-switchable-v2 .nexus-si__note { display: none !important; }
@media (max-width: 720px) {
  .nexus-si--theme-switchable-v2 .nexus-si__theme-switch { order: 3; }
  .nexus-si--theme-switchable-v2 .nexus-si__theme-option { padding: 5px 8px; font-size: 10.5px; }
}

/* STAGE 7C — Header Theme Toggle Precision Alignment
   Frontend presentation only. Centers the Light/Dark segmented control in the
   Smart Informant header and refines it to feel like a modern AI interface. */
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between;
  gap: 12px;
  min-height: 78px;
  padding: 14px 16px !important;
  box-sizing: border-box;
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__identity {
  display: flex;
  align-items: center !important;
  align-self: center;
  min-width: 0;
  flex: 1 1 auto;
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__copy {
  min-width: 0;
  max-width: 138px;
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__title,
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__subtitle {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__header-actions {
  display: flex !important;
  align-items: center !important;
  justify-content: flex-end;
  align-self: center;
  gap: 8px;
  height: auto;
  margin: 0;
  padding: 0;
  flex: 0 0 auto;
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__theme-switch {
  --nca-si-switch-h: 42px;
  --nca-si-switch-pad: 4px;
  position: relative;
  top: auto !important;
  transform: none !important;
  align-self: center !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 3px;
  height: var(--nca-si-switch-h);
  min-height: var(--nca-si-switch-h);
  padding: var(--nca-si-switch-pad) !important;
  margin: 0 !important;
  border-radius: 999px;
  box-sizing: border-box;
  line-height: 1;
  vertical-align: middle;
  background: color-mix(in srgb, var(--nca-si-soft) 74%, transparent);
  border: 1px solid color-mix(in srgb, var(--nca-si-text) 10%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 18%, transparent), 0 10px 30px rgba(15, 23, 42, .06);
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__theme-option {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  height: calc(var(--nca-si-switch-h) - (var(--nca-si-switch-pad) * 2));
  min-height: calc(var(--nca-si-switch-h) - (var(--nca-si-switch-pad) * 2));
  min-width: 58px;
  padding: 0 13px !important;
  margin: 0 !important;
  border-radius: 999px;
  line-height: 1 !important;
  font-size: 11px;
  font-weight: 780;
  letter-spacing: .055em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--nca-si-muted) 86%, var(--nca-si-text));
  box-sizing: border-box;
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__theme-option:hover {
  transform: none;
  color: var(--nca-si-text);
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__theme-option[data-active="1"],
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__theme-option[aria-pressed="true"] {
  background: var(--nca-si-text);
  color: var(--nca-si-surface);
  box-shadow: 0 8px 22px rgba(15, 23, 42, .10);
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2.nexus-si--theme-premium_dark .nexus-si__theme-switch {
  background: rgba(255,255,255,.055);
  border-color: rgba(255,255,255,.12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 12px 34px rgba(0,0,0,.22);
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2.nexus-si--theme-premium_dark .nexus-si__theme-option[data-active="1"],
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2.nexus-si--theme-premium_dark .nexus-si__theme-option[aria-pressed="true"] {
  background: linear-gradient(180deg, rgba(73,167,220,.98), rgba(21,63,99,.96));
  color: #07111f;
  box-shadow: 0 8px 22px rgba(73,167,220,.18), inset 0 1px 0 rgba(255,255,255,.26);
}
.nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__icon-button {
  align-self: center !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 38px;
  height: 38px;
  min-width: 38px;
  min-height: 38px;
  margin: 0 !important;
  line-height: 1 !important;
}
@media (max-width: 460px) {
  .nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__header {
    flex-wrap: wrap;
    align-items: center !important;
    row-gap: 10px;
    min-height: 112px;
  }
  .nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__identity { flex: 1 1 calc(100% - 96px); }
  .nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__header-actions {
    flex: 1 1 100%;
    justify-content: center;
    order: 2;
  }
  .nexus-si--visual-parity-v1.nexus-si--theme-switchable-v2 .nexus-si__theme-switch { width: min(220px, 100%); }
}



/* STAGE 7D — Assistant Response Utility Refinement
   Removes repeated Smart Informant text labels, introduces a subtle AI marker,
   lightweight trust signal, and utility actions under each assistant response. */
.nexus-si--response-utilities-v1 .nexus-si__message-label--assistant {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0;
  margin-bottom: 2px;
}
.nexus-si--response-utilities-v1 .nexus-si__ai-emblem {
  width: 22px; height: 22px; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--nca-si-accent) 12%, var(--nca-si-soft));
  border: 1px solid color-mix(in srgb, var(--nca-si-accent) 28%, transparent);
  color: var(--nca-si-accent); font-size: 12px; line-height: 1;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.22);
}
.nexus-si--response-utilities-v1.nexus-si--theme-premium_dark .nexus-si__ai-emblem {
  background: rgba(73,167,220,.12); border-color: rgba(73,167,220,.30); color: #7dd3fc;
}
.nexus-si--response-utilities-v1 .nexus-si__ai-emblem--mini { width: 18px; height: 18px; font-size: 10px; }
.nexus-si--response-utilities-v1 .nexus-si__source-proof,
.nexus-si--response-utilities-v1 .nexus-si__sources { display: none !important; }
.nexus-si--response-utilities-v1 .nexus-si__response-footer {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-top: 8px; padding-left: 2px; flex-wrap: wrap;
}
.nexus-si--response-utilities-v1 .nexus-si__response-meta {
  display: flex; align-items: center; gap: 8px; min-width: 0;
  color: var(--nca-si-muted); font-size: 11.5px; line-height: 1.35;
}
.nexus-si--response-utilities-v1 .nexus-si__response-state {
  color: color-mix(in srgb, var(--nca-si-muted) 90%, var(--nca-si-text));
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 180px;
}
.nexus-si--response-utilities-v1 .nexus-si__trust-signal {
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
}
.nexus-si--response-utilities-v1 .nexus-si__trust-signal::before {
  content: '•'; color: var(--nca-si-accent); font-size: 12px;
}
.nexus-si--response-utilities-v1 .nexus-si__response-actions {
  display: inline-flex; align-items: center; gap: 2px; margin-left: auto;
}
.nexus-si--response-utilities-v1 .nexus-si__action {
  appearance: none; border: 0; background: transparent; color: var(--nca-si-muted);
  width: 26px; height: 26px; border-radius: 8px; padding: 0; margin: 0;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; line-height: 1; font-size: 13px;
  transition: background var(--nca-si-transition), color var(--nca-si-transition), transform var(--nca-si-transition);
}
.nexus-si--response-utilities-v1 .nexus-si__action:hover {
  background: color-mix(in srgb, var(--nca-si-soft) 82%, transparent); color: var(--nca-si-text); transform: translateY(-1px);
}
.nexus-si--response-utilities-v1 .nexus-si__action[aria-pressed='true'] {
  background: color-mix(in srgb, var(--nca-si-accent) 14%, transparent); color: var(--nca-si-accent);
}
.nexus-si--response-utilities-v1.nexus-si--theme-premium_dark .nexus-si__action:hover {
  background: rgba(255,255,255,.06); color: #f8fafc;
}
.nexus-si--response-utilities-v1 .nexus-si__response-more {
  flex: 1 1 100%; display: flex; align-items: center; gap: 10px;
  font-size: 11px; color: var(--nca-si-muted); padding-left: 28px;
}
.nexus-si--response-utilities-v1 .nexus-si__response-more-text { opacity: .92; }
.nexus-si--response-utilities-v1 .nexus-si__response-more-links { display: inline-flex; flex-wrap: wrap; gap: 8px; }
.nexus-si--response-utilities-v1 .nexus-si__response-more-links a {
  color: var(--nca-si-accent); text-decoration: none;
}
.nexus-si--response-utilities-v1 .nexus-si__response-more-links a:hover { text-decoration: underline; }
.nexus-si--response-utilities-v1 .nexus-si__message--assistant .nexus-si__bubble { margin-bottom: 0; }
@media (max-width: 680px) {
  .nexus-si--response-utilities-v1 .nexus-si__response-footer { gap: 8px; }
  .nexus-si--response-utilities-v1 .nexus-si__response-actions { width: 100%; margin-left: 0; justify-content: flex-start; }
  .nexus-si--response-utilities-v1 .nexus-si__response-state { max-width: 120px; }
  .nexus-si--response-utilities-v1 .nexus-si__response-more { padding-left: 0; }
}


/* STAGE 7E — AI-Native Clean Thread Refinement
   Removes chat-bubble visual body from assistant identity marker and makes
   assistant responses read like a clean AI answer stream instead of boxed chat cards. */
.nexus-si--ai-native-clean-v1 .nexus-si__message-label {
  font-size: 0 !important;
  line-height: 1 !important;
  margin: 0 !important;
  padding: 0 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message-label:not(.nexus-si__message-label--assistant) {
  display: none !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message-label--assistant {
  display: inline-flex !important;
  width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  margin-top: 2px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message-label--assistant .nexus-si__ai-emblem,
.nexus-si--ai-native-clean-v1 .nexus-si__ai-marker .nexus-si__ai-emblem {
  width: auto !important;
  height: auto !important;
  min-width: 0 !important;
  min-height: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  color: var(--nca-si-accent) !important;
  font-size: 15px !important;
  line-height: 1 !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
}
.nexus-si--ai-native-clean-v1.nexus-si--theme-premium_dark .nexus-si__message-label--assistant .nexus-si__ai-emblem,
.nexus-si--ai-native-clean-v1.nexus-si--theme-premium_dark .nexus-si__ai-marker .nexus-si__ai-emblem {
  color: #49a7dc !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--assistant {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  column-gap: 12px;
  align-items: start;
  max-width: 100%;
  margin: 20px 0 22px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--assistant .nexus-si__bubble {
  grid-column: 2;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
  color: var(--nca-si-text) !important;
  font-size: clamp(14.5px, 1vw, 15.5px);
  line-height: 1.68;
  letter-spacing: -0.008em;
}
.nexus-si--ai-native-clean-v1.nexus-si--theme-premium_dark .nexus-si__message--assistant .nexus-si__bubble {
  color: rgba(248,250,252,.94) !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--assistant .nexus-si__response-footer {
  grid-column: 2;
  margin-top: 10px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}
.nexus-si--ai-native-clean-v1 .nexus-si__response-meta {
  gap: 9px;
  color: color-mix(in srgb, var(--nca-si-muted) 88%, var(--nca-si-text));
}
.nexus-si--ai-native-clean-v1 .nexus-si__ai-marker { display: none !important; }
.nexus-si--ai-native-clean-v1 .nexus-si__trust-signal {
  opacity: .78;
  font-size: 11.5px;
}
.nexus-si--ai-native-clean-v1 .nexus-si__trust-signal::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--nca-si-accent);
  display: inline-block;
  opacity: .78;
}
.nexus-si--ai-native-clean-v1 .nexus-si__response-state { display: none !important; }
.nexus-si--ai-native-clean-v1 .nexus-si__response-actions {
  gap: 4px;
  opacity: .72;
}
.nexus-si--ai-native-clean-v1 .nexus-si__action {
  width: 25px;
  height: 25px;
  border-radius: 7px;
  color: color-mix(in srgb, var(--nca-si-muted) 86%, var(--nca-si-text));
}
.nexus-si--ai-native-clean-v1 .nexus-si__action svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  stroke-width: 1.85;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.nexus-si--ai-native-clean-v1 .nexus-si__action:hover {
  background: color-mix(in srgb, var(--nca-si-soft) 66%, transparent);
  opacity: 1;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--user .nexus-si__bubble {
  box-shadow: none;
  border-width: 1px;
}
.nexus-si--ai-native-clean-v1 .nexus-si__thinking {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  column-gap: 12px;
}
.nexus-si--ai-native-clean-v1 .nexus-si__thinking .nexus-si__bubble {
  grid-column: 2;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  padding: 0 !important;
}
@media (max-width: 680px) {
  .nexus-si--ai-native-clean-v1 .nexus-si__message--assistant,
  .nexus-si--ai-native-clean-v1 .nexus-si__thinking {
    grid-template-columns: 18px minmax(0, 1fr);
    column-gap: 10px;
    margin: 18px 0 20px !important;
  }
  .nexus-si--ai-native-clean-v1 .nexus-si__message--assistant .nexus-si__response-footer {
    gap: 8px;
  }
  .nexus-si--ai-native-clean-v1 .nexus-si__response-meta {
    width: 100%;
  }
  .nexus-si--ai-native-clean-v1 .nexus-si__response-actions {
    width: 100%;
    justify-content: flex-start;
    margin-left: 0;
  }
}


/* STAGE 7F — Brand-aligned source disclosure and launcher/send refinement */
.nexus-si--brand-aligned-v1 {
  --nca-si-brand-blue: #49a7dc;
  --nca-si-brand-blue-dark: #153f63;
  --nca-si-brand-blue-deep: #0f3150;
  --nca-si-brand-green: #51b95d;
}
.nexus-si--brand-aligned-v1 .nexus-si__launcher-mark {
  display: none !important;
}
.nexus-si--brand-aligned-v1.nexus-si--mode-floating .nexus-si__launcher {
  gap: 10px;
  padding-left: 18px;
}
.nexus-si--brand-aligned-v1.nexus-si--mode-floating .nexus-si__launcher-state {
  background: rgba(21,63,99,.88);
  color: #f8fbff;
  border-color: rgba(255,255,255,.12);
}
.nexus-si--brand-aligned-v1 .nexus-si__ai-emblem,
.nexus-si--brand-aligned-v1 .nexus-si__ai-emblem--mini {
  display: inline-flex;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--nca-si-brand-blue), var(--nca-si-brand-green));
  box-shadow: 0 0 0 3px rgba(73,167,220,.12);
}
.nexus-si--brand-aligned-v1.nexus-si--theme-premium_dark .nexus-si__ai-emblem,
.nexus-si--brand-aligned-v1.nexus-si--theme-premium_dark .nexus-si__ai-emblem--mini {
  box-shadow: 0 0 0 3px rgba(73,167,220,.16);
}
.nexus-si--brand-aligned-v1 .nexus-si__send {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-align: center;
  line-height: 1;
  padding: 0;
  background: var(--nca-si-brand-blue-dark);
  color: #ffffff;
  border-color: rgba(21,63,99,.76);
}
.nexus-si--brand-aligned-v1 .nexus-si__send > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  transform: translateY(-1px);
  color: inherit;
}
.nexus-si--brand-aligned-v1.nexus-si--theme-premium_dark .nexus-si__send {
  background: var(--nca-si-brand-blue);
  color: #08141f;
  border-color: rgba(73,167,220,.66);
  box-shadow: 0 10px 24px rgba(73,167,220,.18);
}
.nexus-si--brand-aligned-v1 .nexus-si__send:hover:not(:disabled) {
  filter: brightness(1.03);
}
.nexus-si--brand-aligned-v1 .nexus-si__theme-option[data-active="1"],
.nexus-si--brand-aligned-v1 .nexus-si__theme-option[aria-pressed="true"] {
  background: var(--nca-si-brand-blue-dark);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(21,63,99,.18);
}
.nexus-si--brand-aligned-v1.nexus-si--theme-premium_dark .nexus-si__theme-option[data-active="1"],
.nexus-si--brand-aligned-v1.nexus-si--theme-premium_dark .nexus-si__theme-option[aria-pressed="true"] {
  background: var(--nca-si-brand-blue);
  color: #07111f;
  box-shadow: 0 8px 22px rgba(73,167,220,.20);
}
.nexus-si--source-disclosure-v1 .nexus-si__source-proof,
.nexus-si--source-disclosure-v1 .nexus-si__trust-signal {
  display: none !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--nca-si-muted);
  padding: 0;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle:hover,
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle[aria-expanded="true"] {
  color: var(--nca-si-text);
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more {
  margin-top: 8px;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  color: var(--nca-si-muted);
  font-size: 12.5px;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more-text {
  display: block;
  line-height: 1.55;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more-links {
  display: grid;
  gap: 5px;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more-links a {
  color: var(--nca-si-text);
  text-decoration: none;
  font-size: 12.5px;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more-links a:hover {
  text-decoration: underline;
}
@media (max-width: 640px) {
  .nexus-si--brand-aligned-v1 .nexus-si__send { width: 48px; height: 48px; }
  .nexus-si--source-disclosure-v1 .nexus-si__response-more { padding-left: 0; }
}


/* FINAL POLISH — AI-native neutral brand system and source disclosure opt-in */
.nexus-si--brand-aligned-v1,
.nexus-si--ai-native-clean-v1 {
  --nca-si-brand-blue: #49a7dc;
  --nca-si-brand-blue-dark: #153f63;
  --nca-si-brand-blue-deep: #0b2740;
  --nca-si-brand-green: #51b95d;
  --nca-si-accent: #49a7dc;
}
.nexus-si--theme-premium_dark.nexus-si--brand-aligned-v1,
.nexus-si--theme-premium_dark.nexus-si--ai-native-clean-v1 {
  --nca-si-accent: #5db7e6;
}
.nexus-si--brand-aligned-v1 .nexus-si__launcher-mark,
.nexus-si--ai-native-clean-v1 .nexus-si__launcher-mark {
  display: none !important;
}
.nexus-si--brand-aligned-v1 .nexus-si__panel,
.nexus-si--ai-native-clean-v1 .nexus-si__panel {
  border-width: 1px;
}
.nexus-si--brand-aligned-v1 .nexus-si__message-label--assistant,
.nexus-si--ai-native-clean-v1 .nexus-si__message-label--assistant {
  min-width: 14px;
  width: 14px;
}
.nexus-si--brand-aligned-v1 .nexus-si__ai-emblem,
.nexus-si--brand-aligned-v1 .nexus-si__ai-emblem--mini,
.nexus-si--ai-native-clean-v1 .nexus-si__ai-emblem,
.nexus-si--ai-native-clean-v1 .nexus-si__ai-emblem--mini {
  width: 8px !important;
  height: 8px !important;
  border-radius: 999px !important;
  background: linear-gradient(135deg, #49a7dc, #51b95d) !important;
  color: transparent !important;
  box-shadow: 0 0 0 3px rgba(73,167,220,.10) !important;
}
.nexus-si--theme-premium_dark .nexus-si__ai-emblem,
.nexus-si--theme-premium_dark .nexus-si__ai-emblem--mini {
  box-shadow: 0 0 0 3px rgba(73,167,220,.16) !important;
}
.nexus-si--brand-aligned-v1 .nexus-si__send,
.nexus-si--ai-native-clean-v1 .nexus-si__send {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 0 !important;
  line-height: 1 !important;
  background: #153f63 !important;
  border-color: rgba(21,63,99,.78) !important;
  color: #fff !important;
  box-shadow: 0 12px 24px rgba(21,63,99,.16) !important;
}
.nexus-si--theme-premium_dark.nexus-si--brand-aligned-v1 .nexus-si__send,
.nexus-si--theme-premium_dark.nexus-si--ai-native-clean-v1 .nexus-si__send {
  background: #49a7dc !important;
  border-color: rgba(73,167,220,.74) !important;
  color: #07111f !important;
  box-shadow: 0 12px 28px rgba(73,167,220,.20) !important;
}
.nexus-si--brand-aligned-v1 .nexus-si__send > span,
.nexus-si--ai-native-clean-v1 .nexus-si__send > span {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100% !important;
  height: 100% !important;
  transform: translateY(-1px) !important;
  color: inherit !important;
}
.nexus-si--brand-aligned-v1 .nexus-si__theme-option[data-active="1"],
.nexus-si--brand-aligned-v1 .nexus-si__theme-option[aria-pressed="true"],
.nexus-si--ai-native-clean-v1 .nexus-si__theme-option[data-active="1"],
.nexus-si--ai-native-clean-v1 .nexus-si__theme-option[aria-pressed="true"] {
  background: #153f63 !important;
  color: #fff !important;
  box-shadow: 0 8px 18px rgba(21,63,99,.18) !important;
}
.nexus-si--theme-premium_dark.nexus-si--brand-aligned-v1 .nexus-si__theme-option[data-active="1"],
.nexus-si--theme-premium_dark.nexus-si--brand-aligned-v1 .nexus-si__theme-option[aria-pressed="true"],
.nexus-si--theme-premium_dark.nexus-si--ai-native-clean-v1 .nexus-si__theme-option[data-active="1"],
.nexus-si--theme-premium_dark.nexus-si--ai-native-clean-v1 .nexus-si__theme-option[aria-pressed="true"] {
  background: #49a7dc !important;
  color: #07111f !important;
  box-shadow: 0 8px 22px rgba(73,167,220,.18) !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-proof,
.nexus-si--source-disclosure-v1 .nexus-si__trust-signal,
.nexus-si--source-disclosure-v1 .nexus-si__sources {
  display: none !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more[hidden] {
  display: none !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle {
  border: 0 !important;
  background: transparent !important;
  color: var(--nca-si-muted) !important;
  box-shadow: none !important;
  padding: 0 !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle:hover,
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle[aria-expanded="true"] {
  color: var(--nca-si-text) !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle svg {
  stroke: currentColor !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more:not([hidden]) {
  display: grid !important;
  margin-top: 8px !important;
  padding: 0 0 0 18px !important;
  border: 0 !important;
  background: transparent !important;
  color: var(--nca-si-muted) !important;
  box-shadow: none !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__bubble,
.nexus-si--brand-aligned-v1 .nexus-si__bubble {
  border-color: rgba(148,163,184,.18);
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--assistant .nexus-si__bubble {
  background: transparent !important;
  border-color: transparent !important;
  box-shadow: none !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__response-footer {
  margin-top: 8px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__action {
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}
.nexus-si__message[data-state="fallback"] .nexus-si__bubble,
.nexus-si__message[data-state="readback-required"] .nexus-si__bubble {
  background: rgba(73,167,220,.07) !important;
  border-color: rgba(73,167,220,.16) !important;
}
.nexus-si__status[data-state="proof-required"],
.nexus-si__status[data-state="readback-required"] {
  color: #153f63 !important;
}
.nexus-si[data-nexus-si-runtime-state="fallback"] .nexus-si__source-pill i,
.nexus-si[data-nexus-si-runtime-state="proof-required"] .nexus-si__source-pill i,
.nexus-si[data-nexus-si-runtime-state="readback-required"] .nexus-si__source-pill i {
  background: #49a7dc !important;
  box-shadow: 0 0 0 3px rgba(73,167,220,.14) !important;
}

/* STAGE 8C — Final micro-polish for AI-native conversation surface */
.nexus-si--ai-native-clean-v1.nexus-si--brand-aligned-v1 {
  --nca-si-thread-gap: 18px;
  --nca-si-answer-max: 92%;
}
.nexus-si--ai-native-clean-v1 .nexus-si__messages {
  gap: var(--nca-si-thread-gap) !important;
  padding-block: 18px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message {
  gap: 7px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--assistant {
  grid-template-columns: 14px minmax(0, 1fr) !important;
  column-gap: 10px !important;
  max-width: var(--nca-si-answer-max) !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--assistant .nexus-si__bubble {
  padding: 0 !important;
  margin: 0 !important;
  font-size: 14.5px !important;
  line-height: 1.72 !important;
  letter-spacing: .002em !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message--user .nexus-si__bubble {
  padding: 10px 13px !important;
  border-radius: 18px 18px 7px 18px !important;
  font-size: 14px !important;
  line-height: 1.55 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__message-label--assistant {
  align-self: start !important;
  margin-top: 6px !important;
  opacity: .88 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__response-footer {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  flex-wrap: wrap !important;
  margin-top: 10px !important;
  padding: 0 !important;
  opacity: .82 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__response-meta {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  min-width: 0 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__ai-marker {
  width: 10px !important;
  height: 10px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle {
  min-height: 26px !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 5px !important;
  font-size: 11.5px !important;
  line-height: 1 !important;
  letter-spacing: .01em !important;
  opacity: .82 !important;
  transition: opacity .16s ease, color .16s ease, transform .16s ease !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle:hover,
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle[aria-expanded="true"] {
  opacity: 1 !important;
  transform: translateY(-.5px) !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__source-toggle svg {
  width: 13px !important;
  height: 13px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__response-actions {
  display: inline-flex !important;
  align-items: center !important;
  gap: 3px !important;
  margin-left: 0 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__action {
  width: 28px !important;
  height: 28px !important;
  min-width: 28px !important;
  min-height: 28px !important;
  padding: 0 !important;
  border-radius: 9px !important;
  color: var(--nca-si-muted) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  opacity: .72 !important;
  transition: background .16s ease, color .16s ease, opacity .16s ease, transform .16s ease !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__action svg {
  width: 15px !important;
  height: 15px !important;
  stroke-width: 1.75 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__action:hover,
.nexus-si--ai-native-clean-v1 .nexus-si__action[aria-pressed="true"] {
  opacity: 1 !important;
  color: var(--nca-si-text) !important;
  background: rgba(73,167,220,.08) !important;
  transform: translateY(-.5px) !important;
}
.nexus-si--source-disclosure-v1 .nexus-si__response-more:not([hidden]) {
  grid-column: 1 / -1 !important;
  width: min(100%, 92%) !important;
  margin: 6px 0 0 20px !important;
  padding: 8px 0 0 0 !important;
  border-top: 1px solid rgba(148,163,184,.18) !important;
  font-size: 12px !important;
  line-height: 1.55 !important;
}
.nexus-si--theme-premium_dark.nexus-si--source-disclosure-v1 .nexus-si__response-more:not([hidden]) {
  border-top-color: rgba(148,163,184,.16) !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__composer {
  min-height: 54px !important;
  align-items: center !important;
  gap: 10px !important;
  padding: 8px 8px 8px 15px !important;
  border-radius: 20px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__input {
  line-height: 1.5 !important;
  min-height: 30px !important;
  padding-block: 5px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__send {
  width: 42px !important;
  height: 42px !important;
  min-width: 42px !important;
  min-height: 42px !important;
  border-radius: 14px !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__send > span {
  transform: translateY(-1px) !important;
  font-size: 18px !important;
  font-weight: 800 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__status {
  min-height: 18px !important;
  font-size: 12px !important;
  padding-inline: 18px !important;
  color: var(--nca-si-muted) !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__dots i {
  width: 5px !important;
  height: 5px !important;
  background: currentColor !important;
  opacity: .55 !important;
}
.nexus-si--ai-native-clean-v1 .nexus-si__thinking .nexus-si__bubble {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  padding: 0 !important;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
}
@media (max-width: 640px) {
  .nexus-si--ai-native-clean-v1 .nexus-si__messages { padding-block: 14px !important; gap: 16px !important; }
  .nexus-si--ai-native-clean-v1 .nexus-si__message--assistant { max-width: 100% !important; }
  .nexus-si--ai-native-clean-v1 .nexus-si__response-footer { gap: 8px !important; }
  .nexus-si--ai-native-clean-v1 .nexus-si__response-actions { width: 100% !important; justify-content: flex-start !important; }
  .nexus-si--source-disclosure-v1 .nexus-si__response-more:not([hidden]) { width: 100% !important; margin-left: 0 !important; }
  .nexus-si--ai-native-clean-v1 .nexus-si__composer { min-height: 52px !important; border-radius: 18px !important; }
  .nexus-si--ai-native-clean-v1 .nexus-si__send { width: 42px !important; height: 42px !important; }
}


/* STAGE 9 — Final AI-native regression polish lock
 * Scope: frontend presentation only. Removes residual decorative glyphs,
 * standardizes brand-aligned blue accent, and keeps source disclosure opt-in.
 */
.nexus-si,
.nexus-si--theme-inherit,
.nexus-si--theme-premium_light,
.nexus-si--theme-brand,
.nexus-si--theme-neutral {
  --nca-si-accent: #49a7dc;
}
.nexus-si--theme-premium_dark {
  --nca-si-accent: #5db7e6;
}
.nexus-si--visual-parity-v1 .nexus-si__opening-title::before,
.nexus-si__opening-title::before,
.nexus-si__launcher-mark,
.nexus-si__ai-emblem::before,
.nexus-si__ai-emblem--mini::before {
  content: none !important;
  display: none !important;
}
.nexus-si__source-proof,
.nexus-si__trust-signal { display: none !important; }
.nexus-si__response-more[hidden] { display: none !important; }
.nexus-si__send,
.nexus-si--theme-premium_light .nexus-si__send,
.nexus-si--theme-brand .nexus-si__send,
.nexus-si--theme-neutral .nexus-si__send {
  background: #153f63 !important;
  color: #ffffff !important;
  border-color: rgba(21,63,99,.78) !important;
}
.nexus-si--theme-premium_dark .nexus-si__send {
  background: #49a7dc !important;
  color: #07111f !important;
  border-color: rgba(73,167,220,.68) !important;
}
.nexus-si__send > span {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100% !important;
  height: 100% !important;
  line-height: 1 !important;
}


/* STAGE 13 — Evidence-based runtime micro-fix: composer precision + live More menu
 * Scope: frontend presentation and interaction only.
 * Boundary: no corpus, retrieval, REST answer logic, database schema, Knowledge Hub,
 * action handler, Product Readiness, Help Center, or core answer logic changes.
 */
.nexus-si .nexus-si__composer,
.nexus-si--ai-native-clean-v1 .nexus-si__composer,
.nexus-si--visual-parity-v1 .nexus-si__composer {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) auto !important;
  align-items: center !important;
  justify-items: stretch !important;
  box-sizing: border-box !important;
}
.nexus-si .nexus-si__input,
.nexus-si--ai-native-clean-v1 .nexus-si__input,
.nexus-si--visual-parity-v1 .nexus-si__input {
  display: block !important;
  width: 100% !important;
  min-width: 0 !important;
  min-height: 42px !important;
  padding: 11px 10px 11px 0 !important;
  margin: 0 !important;
  box-sizing: border-box !important;
  line-height: 20px !important;
  vertical-align: middle !important;
  overflow-y: auto !important;
}
.nexus-si .nexus-si__input::placeholder,
.nexus-si--ai-native-clean-v1 .nexus-si__input::placeholder,
.nexus-si--visual-parity-v1 .nexus-si__input::placeholder {
  line-height: 20px !important;
}
.nexus-si .nexus-si__send,
.nexus-si--ai-native-clean-v1 .nexus-si__send,
.nexus-si--visual-parity-v1 .nexus-si__send {
  display: inline-grid !important;
  place-items: center !important;
  align-self: center !important;
  justify-self: end !important;
  padding: 0 !important;
  margin: 0 !important;
  box-sizing: border-box !important;
  line-height: 1 !important;
  vertical-align: middle !important;
}
.nexus-si .nexus-si__send > span,
.nexus-si--ai-native-clean-v1 .nexus-si__send > span,
.nexus-si--visual-parity-v1 .nexus-si__send > span,
.nexus-si .nexus-si__send svg,
.nexus-si--ai-native-clean-v1 .nexus-si__send svg,
.nexus-si--visual-parity-v1 .nexus-si__send svg {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100% !important;
  height: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  line-height: 1 !important;
  transform: none !important;
  position: relative !important;
  top: 0 !important;
  left: 0 !important;
}
.nexus-si--response-utilities-v1 .nexus-si__response-actions,
.nexus-si--ai-native-clean-v1 .nexus-si__response-actions {
  position: relative !important;
}
.nexus-si__more-menu[hidden] {
  display: none !important;
}
.nexus-si__more-menu {
  position: absolute;
  right: 0;
  left: auto;
  top: calc(100% + 8px);
  bottom: auto;
  z-index: 30;
  width: auto;
  min-width: 0;
  max-width: min(204px, calc(100vw - 32px));
  padding: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid color-mix(in srgb, var(--nca-si-border) 86%, transparent);
  border-radius: 18px;
  background: color-mix(in srgb, var(--nca-si-surface) 96%, #ffffff 4%);
  box-shadow: 0 12px 34px rgba(15, 23, 42, .13);
  backdrop-filter: blur(14px);
}
.nexus-si__more-menu--above {
  top: auto;
  bottom: calc(100% + 8px);
}
.nexus-si__more-menu--align-left {
  right: auto;
  left: 0;
}
.nexus-si--theme-premium_dark .nexus-si__more-menu {
  background: color-mix(in srgb, var(--nca-si-surface) 90%, #020617 10%);
  border-color: rgba(255,255,255,.10);
  box-shadow: 0 16px 40px rgba(0,0,0,.28);
}
.nexus-si__more-item {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--nca-si-muted);
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  padding: 0;
  border-radius: 12px;
  display: inline-grid;
  place-items: center;
  line-height: 1;
  cursor: pointer;
}
.nexus-si__more-item:hover,
.nexus-si__more-item:focus-visible {
  outline: none;
  color: var(--nca-si-text);
  background: color-mix(in srgb, var(--nca-si-accent) 12%, transparent);
}
.nexus-si__more-item svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  stroke-width: 1.85;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .82;
}
.nexus-si__more-label {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
.nexus-si__action[data-nexus-si-action="more"][aria-expanded="true"] {
  opacity: 1 !important;
  color: var(--nca-si-text) !important;
  background: rgba(73,167,220,.10) !important;
}
@media (max-width: 640px) {
  .nexus-si .nexus-si__input,
  .nexus-si--ai-native-clean-v1 .nexus-si__input,
  .nexus-si--visual-parity-v1 .nexus-si__input {
    min-height: 42px !important;
    padding-top: 11px !important;
    padding-bottom: 11px !important;
  }
  .nexus-si__more-menu {
    max-width: min(188px, calc(100vw - 28px));
    padding: 5px;
    gap: 3px;
  }
  .nexus-si__more-item {
    width: 31px;
    height: 31px;
    min-width: 31px;
    min-height: 31px;
  }
}

/* STAGE 15 — Operational precision hardening
 * Scope: frontend runtime evidence, compact advanced feedback, and non-false action states only.
 * Boundary: no corpus, retrieval, REST answer logic, database schema, Knowledge Hub,
 * Product Readiness, Help Center, or core answer logic changes.
 */
.nexus-si[data-nexus-si-runtime-state="timeout"] [data-nexus-si-status],
.nexus-si[data-nexus-si-runtime-state="auth-required"] [data-nexus-si-status],
.nexus-si[data-nexus-si-runtime-state="endpoint-missing"] [data-nexus-si-status],
.nexus-si[data-nexus-si-runtime-state="server-error"] [data-nexus-si-status],
.nexus-si[data-nexus-si-runtime-state="invalid-response"] [data-nexus-si-status] {
  display: block;
}
.nexus-si [data-nexus-si-action][disabled],
.nexus-si [data-nexus-si-action][data-nexus-si-action-busy="1"] {
  pointer-events: none;
  opacity: .62;
}
.nexus-si [data-nexus-si-action][data-nexus-si-action-busy="1"] svg {
  opacity: .55;
}
.nexus-si__advanced-feedback {
  width: 100%;
  box-sizing: border-box;
  margin-top: 10px;
  padding: 10px;
  border: 1px solid color-mix(in srgb, var(--nca-si-border) 84%, transparent);
  border-radius: 16px;
  background: color-mix(in srgb, var(--nca-si-soft) 82%, transparent);
  display: grid;
  gap: 8px;
}
.nexus-si__advanced-label {
  font-size: 11px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--nca-si-muted);
}
.nexus-si__advanced-input {
  width: 100%;
  min-height: 54px;
  box-sizing: border-box;
  border: 1px solid color-mix(in srgb, var(--nca-si-border) 88%, transparent);
  border-radius: 12px;
  background: var(--nca-si-surface);
  color: var(--nca-si-text);
  padding: 9px 10px;
  resize: vertical;
  line-height: 1.42;
  font: inherit;
  font-size: 12px;
  outline: none;
}
.nexus-si__advanced-input:focus {
  box-shadow: var(--nca-si-focus);
}
.nexus-si__advanced-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 7px;
}
.nexus-si__advanced-actions button {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--nca-si-border) 88%, transparent);
  border-radius: 999px;
  background: var(--nca-si-surface);
  color: var(--nca-si-text);
  font: inherit;
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  padding: 8px 10px;
  cursor: pointer;
}
.nexus-si__advanced-actions button[type="submit"] {
  background: var(--nca-si-accent);
  border-color: var(--nca-si-accent);
  color: #ffffff;
}
.nexus-si--theme-premium_dark .nexus-si__advanced-feedback {
  background: rgba(255,255,255,.045);
  border-color: rgba(255,255,255,.10);
}
.nexus-si--theme-premium_dark .nexus-si__advanced-input,
.nexus-si--theme-premium_dark .nexus-si__advanced-actions button {
  background: rgba(15,23,42,.88);
  border-color: rgba(255,255,255,.12);
}
@media (max-width: 640px) {
  .nexus-si__advanced-feedback { padding: 9px; border-radius: 14px; }
  .nexus-si__advanced-actions { justify-content: stretch; }
  .nexus-si__advanced-actions button { flex: 1 1 auto; min-height: 34px; }
}


/* Stage 17 — chat-safe structured response rendering. */
.nexus-si__message--assistant .nexus-si__bubble {
  white-space: normal;
  word-break: normal;
  overflow-wrap: anywhere;
}
.nexus-si__message--assistant .nexus-si__bubble br {
  display: block;
  content: "";
  margin: .32rem 0;
}
.nexus-si__response-more-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 7px;
}
.nexus-si__response-more-links a {
  display: inline-flex;
  max-width: 100%;
  overflow-wrap: anywhere;
}


/* Clean Rebuild — Passenger-Class live state refinement */
.nexus-si[data-nexus-si-runtime-state="offline"] .nexus-si__panel,
.nexus-si[data-nexus-si-runtime-state="timeout"] .nexus-si__panel,
.nexus-si[data-nexus-si-runtime-state="retryable"] .nexus-si__panel { cursor: default; }
.nexus-si__composer[data-nexus-si-form-state="loading"] { opacity: .92; }
.nexus-si__send[data-nexus-si-control-state="loading"] { cursor: progress; }
.nexus-si__send[data-nexus-si-control-state="retryable"] { box-shadow: 0 0 0 3px rgba(73,167,220,.14); }
.nexus-si__status[data-state="offline"],
.nexus-si__status[data-state="timeout"],
.nexus-si__status[data-state="retryable"] { color: #153f63; }
.nexus-si__message[data-state="offline"] .nexus-si__bubble,
.nexus-si__message[data-state="timeout"] .nexus-si__bubble,
.nexus-si__message[data-state="retryable"] .nexus-si__bubble { background: rgba(73,167,220,.08); border-color: rgba(73,167,220,.20); }
.nexus-si[data-nexus-si-runtime-state="offline"] .nexus-si__source-pill i,
.nexus-si[data-nexus-si-runtime-state="timeout"] .nexus-si__source-pill i,
.nexus-si[data-nexus-si-runtime-state="retryable"] .nexus-si__source-pill i { background: #49a7dc; box-shadow: 0 0 0 3px rgba(73,167,220,.14); }