:root {
  --bg: #F7F7F5;
  --panel: #FFFFFF;
  --ink: #0B0B0C;
  --ink-soft: #6A6A66;
  --line: #E4E3DE;
  --line-strong: #D3D2CB;
  --buyer: #0071E3;
  --buyer-deep: #0058B8;
  --buyer-soft: #E3F0FF;
  --seller: #1D1D1F;
  --seller-deep: #0B0B0C;
  --seller-soft: #EDEDEA;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(11,11,12,0.05);
  --shadow-md: 0 6px 18px -8px rgba(11,11,12,0.22);
  --shadow-lg: 0 18px 40px -18px rgba(11,11,12,0.32);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}


* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
}

.app {
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 24px 32px;
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 14px; }

.brand-mark {
  width: 28px;
  height: 28px;
  background: var(--ink);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  flex-shrink: 0;
}

.brand h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  margin: 0;
  letter-spacing: -0.01em;
}

.brand p {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.modes {
  display: flex;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
}

.mode-pill {
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
}

.mode-pill.active { background: var(--ink); color: #FFF; }
.mode-pill.disabled { color: #C9C8C2; cursor: not-allowed; }

.launch-btn {
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: none;
  background: var(--ink);
  color: #FFF;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.launch-btn:hover { transform: translateY(-1px); }
.launch-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ---------- Campaign brief input ---------- */

.brief-row { padding: 12px 0 16px; }

#campaign-brief {
  width: 100%;
  font-family: var(--font-body);
  font-size: 13px;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

#campaign-brief:focus {
  outline: none;
  border-color: var(--ink);
}

#campaign-brief::placeholder { color: #ADACA5; }

/* ---------- Stage layout: activity is now the main, wide panel ---------- */

.stage {
  display: grid;
  grid-template-columns: 170px 440px 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .stage { grid-template-columns: 1fr; }
}

.legend, .activity-panel, .chat-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  transition: box-shadow 0.2s ease;
}

.legend h2, .chat-panel h2 {
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 0 0 14px;
}

.legend {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
  overflow: hidden;
  border-width: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease, padding 0.4s ease, border-width 0.4s ease;
}

.legend.visible {
  max-height: 400px;
  opacity: 1;
  padding-top: 18px;
  padding-bottom: 18px;
  border-width: 1px;
}

.agent-list { display: flex; flex-direction: column; gap: 14px; }

.agent-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 6px;
  border-radius: 8px;
  transition: transform 0.18s ease, background 0.18s ease;
}

.agent-row:hover {
  transform: scale(1.06);
  background: var(--bg);
}

.agent-shape {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  margin-top: 2px;
}

.agent-shape.buyer { background: var(--buyer); border-radius: 3px; }
.agent-shape.seller { background: var(--seller); border-radius: 50%; }

.agent-meta { flex: 1; min-width: 0; }
.agent-name { font-weight: 600; font-size: 13px; }
.agent-role { font-size: 11.5px; color: var(--ink-soft); margin-top: 1px; }

.earned-badge {
  display: inline-block;
  margin-top: 5px;
  font-size: 10.5px;
  font-weight: 600;
  color: #0A5C24;
  background: var(--seller-soft);
  padding: 2px 7px;
  border-radius: 999px;
}

.rating-track {
  height: 4px;
  background: var(--line);
  border-radius: 2px;
  margin-top: 6px;
  overflow: hidden;
}

.rating-fill { height: 100%; border-radius: 2px; }
.rating-fill.buyer { background: var(--buyer); }
.rating-fill.seller { background: var(--seller); }

/* ---------- Side tabs (Agents / Sessions) ---------- */

.side-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
  background: var(--bg);
  border-radius: 8px;
  padding: 3px;
}

.side-tab {
  flex: 1;
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 600;
  padding: 7px 0;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}

.side-tab.active { background: var(--panel); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,0.06); }

.sessions-list { display: flex; flex-direction: column; gap: 8px; }

.session-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease;
  aspect-ratio: 1.4 / 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.session-item:hover { transform: scale(1.05); background: var(--bg); }

.session-name {
  font-weight: 600;
  font-size: 12.5px;
  line-height: 1.3;
}

.session-meta {
  font-size: 10.5px;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 5px;
}

.session-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.session-dot.valid { background: var(--seller); }
.session-dot.invalid { background: var(--buyer); }

/* ---------- Activity panel: iMessage-style bubble chat ---------- */

.activity-panel {
  height: 440px;
  display: flex;
  flex-direction: column;
}

.imessage-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
  flex-shrink: 0;
}

.group-avatar-stack {
  width: 30px;
  height: 22px;
  position: relative;
  flex-shrink: 0;
}

.group-avatar-stack .av {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--panel);
  top: 0;
}

.group-avatar-stack .av:nth-child(1) { left: 0; z-index: 2; }
.group-avatar-stack .av:nth-child(2) { left: 10px; z-index: 1; }
.group-avatar-stack .av:nth-child(3) { left: 20px; top: 8px; z-index: 0; }

.chat-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  flex: 1;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #C9C8C2;
  flex-shrink: 0;
}

.live-dot.on { background: var(--buyer); animation: pulse 1.1s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

.progress-bar {
  height: 3px;
  border-radius: 2px;
  background: var(--line);
  overflow: hidden;
  margin: 10px 0;
  display: none;
}

.progress-bar.active { display: block; }

.progress-fill {
  width: 30%;
  height: 100%;
  background: var(--buyer);
  border-radius: 2px;
  animation: sweep 1.1s ease-in-out infinite;
}

@keyframes sweep {
  0% { transform: translateX(-150%); }
  100% { transform: translateX(430%); }
}

.bubble-stage { flex: 1; overflow-y: auto; position: relative; }

#activity-empty { color: var(--ink-soft); font-size: 13px; margin-top: 20px; text-align: center; }

.bubble-chat { display: flex; flex-direction: column; gap: 4px; padding: 8px 4px; }

.bubble-row { display: flex; flex-direction: column; max-width: 72%; }
.bubble-row.buyer { align-self: flex-end; align-items: flex-end; }
.bubble-row.seller { align-self: flex-start; align-items: flex-start; }

.bubble-sender {
  font-size: 10.5px;
  color: var(--ink-soft);
  margin: 6px 4px 2px;
}

.bubble {
  padding: 9px 14px;
  border-radius: 16px;
  font-size: 13.5px;
  font-weight: 500;
  opacity: 0;
  animation: bubbleIn 0.28s ease forwards;
  transition: transform 0.15s ease;
}

.bubble:hover { transform: scale(1.05); }

@keyframes bubbleIn {
  from { opacity: 0; transform: translateY(6px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.bubble-row.buyer .bubble { background: var(--buyer); color: #FFF; border-bottom-right-radius: 4px; }
.bubble-row.seller .bubble { background: #EDEDEA; color: var(--ink); border-bottom-left-radius: 4px; }

.bubble.system {
  align-self: center;
  background: var(--seller-soft);
  color: #0A5C24;
  font-size: 12px;
  font-weight: 600;
  border-radius: 10px;
  padding: 8px 14px;
}

.bubble-row.system { align-self: center; align-items: center; max-width: 90%; }

.bubble.typing { display: flex; gap: 3px; align-items: center; padding: 11px 14px; }

.bubble.typing span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink-soft);
  animation: typingBounce 1s ease-in-out infinite;
}

.bubble.typing span:nth-child(2) { animation-delay: 0.15s; }
.bubble.typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes typingBounce {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50% { transform: translateY(-4px); opacity: 1; }
}

/* ---------- Chat / live log panel (now the side panel) ---------- */

.chat-panel { height: 440px; display: flex; flex-direction: column; }

.chat-log {
  flex: 1;
  overflow-y: auto;
  padding-right: 4px;
}

.empty-note { color: var(--ink-soft); font-size: 13px; }

.seller-header {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 12.5px;
  margin: 16px 0 8px;
  color: var(--ink);
}

.seller-header:first-child { margin-top: 0; }

.chat-line {
  display: flex;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  opacity: 0;
  animation: fadeIn 0.35s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(3px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-line .tag { flex-shrink: 0; width: 9px; height: 9px; margin-top: 3px; }
.chat-line .tag.buyer { background: var(--buyer); border-radius: 3px; }
.chat-line .tag.seller { background: var(--seller); border-radius: 50%; }
.chat-line .text { flex: 1; }
.chat-line .speaker { font-weight: 600; }

.log-actions { margin-top: 10px; flex-shrink: 0; }

.download-btn {
  width: 100%;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  padding: 9px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}

.download-btn:hover { background: var(--bg); }

/* ---------- Midnight block ---------- */

.midnight-block {
  margin-top: 14px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--panel);
}

.midnight-block-body { flex: 1; min-width: 0; }

.midnight-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  background: var(--ink);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  opacity: 0.15;
}

.midnight-text h3 { font-family: var(--font-display); font-size: 14px; margin: 0 0 4px; }
.midnight-text p { margin: 0; font-size: 12.5px; color: var(--ink-soft); max-width: 560px; }

.midnight-results {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

/* ---------- Live "who's talking to whom" flow diagram ---------- */

.mn-flow {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 8px 4px;
  overflow-x: auto;
}

.mn-flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  width: 84px;
}

.mn-flow-icon {
  width: 26px;
  height: 26px;
  background: var(--line);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.mn-icon-app { border-radius: 6px; }
.mn-icon-wallet { border-radius: 6px 6px 10px 10px; }
.mn-icon-proof { clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%); }
.mn-icon-contract { clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%); }

.mn-flow-label {
  font-size: 10px;
  color: var(--ink-soft);
  text-align: center;
  line-height: 1.3;
}

.mn-flow-line {
  height: 2px;
  flex: 1;
  min-width: 24px;
  background: var(--line);
  position: relative;
  overflow: hidden;
  border-radius: 1px;
}

.mn-flow-line::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -10%;
  width: 10%;
  height: 8px;
  border-radius: 50%;
  background: var(--buyer);
  opacity: 0;
}

/* Active: proof is being generated right now */
.mn-flow[data-state="active"] .mn-flow-icon {
  background: var(--buyer);
  box-shadow: 0 0 0 4px var(--buyer-soft);
  animation: mnNodePulse 1.4s ease-in-out infinite;
}

.mn-flow[data-state="active"] .mn-flow-node:nth-child(1) .mn-flow-icon { animation-delay: 0s; }
.mn-flow[data-state="active"] .mn-flow-node:nth-child(3) .mn-flow-icon { animation-delay: 0.3s; }
.mn-flow[data-state="active"] .mn-flow-node:nth-child(5) .mn-flow-icon { animation-delay: 0.6s; }
.mn-flow[data-state="active"] .mn-flow-node:nth-child(7) .mn-flow-icon { animation-delay: 0.9s; }

.mn-flow[data-state="active"] .mn-flow-line { background: var(--buyer-soft); }
.mn-flow[data-state="active"] .mn-flow-line::after {
  opacity: 1;
  animation: mnTravel 1.2s linear infinite;
}

@keyframes mnNodePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

@keyframes mnTravel {
  from { left: -10%; }
  to { left: 100%; }
}

/* Success: proof came back valid */
.mn-flow[data-state="success"] .mn-flow-icon { background: var(--seller); box-shadow: none; animation: none; }
.mn-flow[data-state="success"] .mn-flow-line { background: var(--seller); }
.mn-flow[data-state="success"] .mn-flow-line::after { display: none; }

/* Error: proof came back invalid, or something failed */
.mn-flow[data-state="error"] .mn-flow-icon { background: var(--buyer); box-shadow: none; animation: none; }
.mn-flow[data-state="error"] .mn-flow-line { background: var(--buyer); }
.mn-flow[data-state="error"] .mn-flow-line::after { display: none; }

@media (prefers-reduced-motion: reduce) {
  .mn-flow-icon, .mn-flow-line::after { animation: none !important; }
}

.proof-card {
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.5;
  transition: transform 0.18s ease;
}

.proof-card:hover { transform: scale(1.04); }
.proof-card.valid { background: var(--seller-soft); color: #0A5C24; }
.proof-card.invalid { background: var(--buyer-soft); color: #8A1F22; }

/* ---------- Midnight verification panel ---------- */

.mn-panel { padding: 14px 16px; }

.mn-header {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 8px;
}

.mn-reason { font-size: 12px; opacity: 0.85; }

.mn-checks {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 8px 0;
  padding: 8px 0;
  border-top: 1px solid rgba(0,0,0,0.08);
  border-bottom: 1px solid rgba(0,0,0,0.08);
}

.mn-check-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.mn-check { font-weight: 700; }
.mn-check.ok { color: #0A5C24; }
.mn-check.no { color: #8A1F22; }

.mn-hashes { display: flex; flex-direction: column; gap: 3px; margin-top: 6px; }

.mn-hash-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  opacity: 0.85;
}

.mn-hash {
  font-family: 'Space Grotesk', monospace;
  background: rgba(0,0,0,0.06);
  padding: 1px 6px;
  border-radius: 4px;
  cursor: help;
}

.mn-pending {
  background: var(--panel);
  border: 1px solid var(--line);
}

.mn-pending-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
}

.mn-pending-note {
  font-size: 11px;
  color: var(--ink-soft);
  margin-top: 4px;
}

.mn-pending-dots { display: flex; gap: 3px; }

.mn-pending-dots span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--buyer);
  animation: typingBounce 1s ease-in-out infinite;
}

.mn-pending-dots span:nth-child(2) { animation-delay: 0.15s; }
.mn-pending-dots span:nth-child(3) { animation-delay: 0.3s; }

/* =====================================================
   Polish layer — hover, depth, sharper mono/red/green
   ===================================================== */

body {
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(11,11,12,0.045), transparent 60%),
    radial-gradient(700px 380px at 100% 0%, rgba(11,11,12,0.03), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

.brand-mark {
  background: linear-gradient(145deg, var(--ink), #3A3A3C);
  transition: transform 0.45s var(--ease), filter 0.3s ease;
}
.brand:hover .brand-mark { transform: rotate(90deg) scale(1.08); }

.mode-pill { transition: color 0.2s ease, background 0.25s var(--ease), transform 0.2s var(--ease); }
.mode-pill:not(.active):not(.disabled):hover { color: var(--ink); background: var(--bg); transform: translateY(-1px); }
.mode-pill.active { box-shadow: var(--shadow-sm), 0 0 0 1px rgba(11,11,12,0.06); }

.launch-btn {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #23232A, var(--ink));
  box-shadow: var(--shadow-md);
  transition: transform 0.2s var(--ease), box-shadow 0.25s var(--ease);
}
.launch-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 20%, rgba(255,255,255,0.28) 50%, transparent 80%);
  transform: translateX(-120%);
  transition: transform 0.7s var(--ease);
}
.launch-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.launch-btn:hover::after { transform: translateX(120%); }
.launch-btn:active { transform: translateY(0) scale(0.985); }

#campaign-brief { transition: border-color 0.2s ease, box-shadow 0.25s ease, background 0.2s ease; }
#campaign-brief:hover { border-color: var(--line-strong); }
#campaign-brief:focus { box-shadow: 0 0 0 4px rgba(11,11,12,0.06); }

.legend, .activity-panel, .chat-panel, .midnight-block {
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s ease, transform 0.3s var(--ease);
}
.activity-panel:hover, .chat-panel:hover, .midnight-block:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}

.agent-row { transition: transform 0.22s var(--ease), background 0.22s ease, box-shadow 0.22s ease; }
.agent-row:hover { transform: translateX(3px) scale(1.02); box-shadow: var(--shadow-sm); }
.agent-shape { transition: box-shadow 0.25s ease, transform 0.25s var(--ease); }
.agent-row:hover .agent-shape.buyer { box-shadow: 0 0 0 4px var(--buyer-soft); transform: rotate(45deg); }
.agent-row:hover .agent-shape.seller { box-shadow: 0 0 0 4px var(--seller-soft); transform: scale(1.15); }

.rating-fill { transition: width 0.6s var(--ease); }
.rating-fill.buyer { background: linear-gradient(90deg, var(--buyer-deep), var(--buyer)); }
.rating-fill.seller { background: linear-gradient(90deg, var(--seller-deep), var(--seller)); }

.earned-badge {
  color: var(--seller-deep);
  box-shadow: inset 0 0 0 1px rgba(11,11,12,0.18);
  transition: transform 0.2s var(--ease);
}
.agent-row:hover .earned-badge { transform: translateY(-1px); }

.side-tab { transition: background 0.2s ease, color 0.2s ease, transform 0.2s var(--ease); }
.side-tab:not(.active):hover { color: var(--ink); transform: translateY(-1px); }

.session-item { transition: transform 0.22s var(--ease), box-shadow 0.22s ease, border-color 0.22s ease; }
.session-item:hover { transform: translateY(-3px) scale(1.02); box-shadow: var(--shadow-md); border-color: var(--line-strong); }
.session-dot.valid { box-shadow: 0 0 0 3px var(--seller-soft); }
.session-dot.invalid { box-shadow: 0 0 0 3px var(--buyer-soft); }

.bubble { transition: transform 0.2s var(--ease), box-shadow 0.2s ease; }
.bubble:hover { transform: translateY(-2px) scale(1.03); box-shadow: var(--shadow-md); }
.bubble-row.buyer .bubble { background: linear-gradient(150deg, var(--buyer), var(--buyer-deep)); }
.bubble-row.seller .bubble { background: #EFEFEC; box-shadow: inset 0 0 0 1px rgba(11,11,12,0.05); }
.bubble.system { color: var(--seller-deep); box-shadow: inset 0 0 0 1px rgba(11,11,12,0.16); }

.live-dot.on { background: var(--buyer); box-shadow: 0 0 0 4px var(--buyer-soft); }
.progress-fill { background: linear-gradient(90deg, var(--buyer-deep), var(--buyer)); }

.group-avatar-stack .av { transition: transform 0.25s var(--ease); }
.imessage-header:hover .group-avatar-stack .av:nth-child(1) { transform: translateX(-3px); }
.imessage-header:hover .group-avatar-stack .av:nth-child(3) { transform: translateX(3px); }

.chat-line { transition: background 0.2s ease, padding-left 0.2s var(--ease); border-radius: 6px; }
.chat-line:hover { background: var(--bg); padding-left: 6px; }
.chat-line .tag.buyer { box-shadow: 0 0 0 3px var(--buyer-soft); }
.chat-line .tag.seller { box-shadow: 0 0 0 3px var(--seller-soft); }

.download-btn { transition: background 0.2s ease, transform 0.2s var(--ease), box-shadow 0.2s ease; }
.download-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); border-color: var(--line-strong); }

.midnight-icon { transition: opacity 0.3s ease, transform 0.5s var(--ease); }
.midnight-block:hover .midnight-icon { opacity: 0.4; transform: rotate(90deg); }

.mn-flow-node { transition: transform 0.25s var(--ease); }
.mn-flow-node:hover { transform: translateY(-3px); }
.mn-flow-node:hover .mn-flow-label { color: var(--ink); }

.proof-card { box-shadow: var(--shadow-sm); transition: transform 0.2s var(--ease), box-shadow 0.25s ease; }
.proof-card:hover { transform: translateY(-3px) scale(1.02); box-shadow: var(--shadow-md); }
.proof-card.valid { color: var(--seller-deep); box-shadow: inset 0 0 0 1px rgba(11,11,12,0.18); }
.proof-card.invalid { color: var(--buyer-deep); box-shadow: inset 0 0 0 1px rgba(0,113,227,0.22); }

.mn-check.ok { color: var(--seller-deep); }
.mn-check.no { color: var(--buyer-deep); }
.mn-hash { transition: background 0.2s ease; }
.mn-hash:hover { background: rgba(11,11,12,0.12); }

.bubble-stage::-webkit-scrollbar, .chat-log::-webkit-scrollbar { width: 6px; }
.bubble-stage::-webkit-scrollbar-thumb, .chat-log::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 3px;
}
.bubble-stage::-webkit-scrollbar-thumb:hover, .chat-log::-webkit-scrollbar-thumb:hover { background: var(--ink-soft); }

::selection { background: var(--ink); color: #FFF; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}