.chat-panel-root {
  width: min(420px, 100%);
  align-self: flex-end;
  grid-area: main;
  justify-self: end;
  position: sticky;
  bottom: 1rem;
  z-index: 40;
}

.contract-chat {
  background: var(--surface, #fff);
  border: 1px solid var(--border, #dce4eb);
  border-radius: var(--radius-lg, 12px);
  box-shadow: var(--shadow-md, 0 4px 16px rgba(66,100,128,.12), 0 2px 4px rgba(66,100,128,.06));
  display: flex;
  flex-direction: column;
  min-height: 540px;
  max-height: calc(100vh - 110px);
  overflow: hidden;
}

.contract-chat.is-collapsed {
  min-height: 0;
}

.contract-chat__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--border, #dce4eb);
  background: linear-gradient(180deg, #fff 0%, var(--navy-light, #edf2f6) 100%);
}

.contract-chat__identity {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.contract-chat__icon {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: var(--radius, 8px);
  background: var(--teal-light, #e8f8f8);
  color: var(--navy, #426480);
  border: 1px solid var(--success-bd, #b8e8e9);
  flex: 0 0 auto;
}

.contract-chat__heading {
  min-width: 0;
}

.contract-chat__title {
  font-weight: 700;
  color: var(--navy, #426480);
  font-size: 14px;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.contract-chat__subtitle {
  color: var(--text2, #5a6e7a);
  font-size: 12px;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.contract-chat__actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

.contract-chat__icon-btn,
.contract-chat__send {
  border: 1px solid var(--border, #dce4eb);
  border-radius: var(--radius, 8px);
  background: var(--surface, #fff);
  color: var(--text2, #5a6e7a);
  display: inline-grid;
  place-items: center;
  transition: background .15s, border-color .15s, color .15s, transform .15s;
}

.contract-chat__icon-btn {
  width: 32px;
  height: 32px;
}

.contract-chat__icon-btn:hover,
.contract-chat__send:hover:not(:disabled) {
  background: var(--teal-light, #e8f8f8);
  border-color: var(--teal, #6bc9cb);
  color: var(--navy, #426480);
}

.contract-chat__icon-btn:active,
.contract-chat__send:active:not(:disabled) {
  transform: translateY(1px);
}

.contract-chat__body {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}

.contract-chat.is-collapsed .contract-chat__body {
  display: none;
}

.contract-chat__messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background:
    linear-gradient(180deg, rgba(237,242,246,.9), rgba(245,247,249,0) 160px),
    var(--surface, #fff);
}

.contract-chat__message {
  max-width: 88%;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contract-chat__message--assistant {
  align-self: flex-start;
}

.contract-chat__message--user {
  align-self: flex-end;
  align-items: flex-end;
}

.contract-chat__bubble {
  border: 1px solid var(--border, #dce4eb);
  border-radius: var(--radius, 8px);
  padding: 9px 11px;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.contract-chat__message--assistant .contract-chat__bubble {
  background: var(--surface, #fff);
  color: var(--text, #1c2b36);
}

.contract-chat__message--user .contract-chat__bubble {
  background: var(--navy, #426480);
  border-color: var(--navy, #426480);
  color: #fff;
}

.contract-chat__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 11px;
  color: var(--text3, #93a3ad);
}

.contract-chat__source-list {
  display: grid;
  gap: 6px;
}

.contract-chat__source {
  border: 1px solid var(--border, #dce4eb);
  border-radius: var(--radius, 8px);
  background: var(--surface, #fff);
  padding: 8px 9px;
  color: var(--text2, #5a6e7a);
  font-size: 12px;
  line-height: 1.35;
}

.contract-chat__source-title {
  color: var(--navy, #426480);
  font-weight: 700;
  margin-bottom: 2px;
}

.contract-chat__source-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
}

.contract-chat__source a {
  color: var(--teal-dark, #4aa9ab);
  font-weight: 700;
  text-decoration: none;
}

.contract-chat__source a:hover {
  text-decoration: underline;
}

.contract-chat__typing {
  width: 42px;
  height: 26px;
  border: 1px solid var(--border, #dce4eb);
  border-radius: var(--radius, 8px);
  background: var(--surface, #fff);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}

.contract-chat__typing span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text3, #93a3ad);
  animation: chatPulse 1.2s infinite ease-in-out;
}

.contract-chat__typing span:nth-child(2) { animation-delay: .12s; }
.contract-chat__typing span:nth-child(3) { animation-delay: .24s; }

@keyframes chatPulse {
  0%, 80%, 100% { opacity: .35; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-3px); }
}

.contract-chat__suggestions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 0 14px 12px;
  background: var(--surface, #fff);
}

.contract-chat__suggestion {
  border: 1px solid var(--border, #dce4eb);
  border-radius: 20px;
  background: var(--surface, #fff);
  color: var(--text2, #5a6e7a);
  font-size: 12px;
  padding: 5px 10px;
  transition: background .15s, border-color .15s, color .15s;
}

.contract-chat__suggestion:hover {
  background: var(--teal-light, #e8f8f8);
  border-color: var(--teal, #6bc9cb);
  color: var(--navy, #426480);
}

.contract-chat__composer {
  border-top: 1px solid var(--border, #dce4eb);
  background: var(--surface, #fff);
  padding: 11px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 38px;
  gap: 8px;
}

.contract-chat__input {
  min-height: 42px;
  max-height: 112px;
  resize: none;
  border: 1px solid var(--border, #dce4eb);
  border-radius: var(--radius, 8px);
  padding: 9px 10px;
  color: var(--text, #1c2b36);
  background: var(--surface, #fff);
  line-height: 1.45;
  outline: none;
}

.contract-chat__input:focus {
  border-color: var(--teal, #6bc9cb);
  box-shadow: 0 0 0 3px rgba(107,201,203,.18);
}

.contract-chat__send {
  width: 38px;
  height: 42px;
  align-self: end;
  background: var(--navy, #426480);
  border-color: var(--navy, #426480);
  color: #fff;
}

.contract-chat__send:hover:not(:disabled) {
  background: var(--navy-dark, #2e4a60);
  border-color: var(--navy-dark, #2e4a60);
  color: #fff;
}

.contract-chat__send:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.contract-chat__error {
  margin: 0 14px 12px;
  border: 1px solid var(--danger-bd, #f5c0b0);
  background: var(--coral-light, #fdf0ec);
  color: var(--coral, #ee6a48);
  border-radius: var(--radius, 8px);
  padding: 8px 10px;
  font-size: 12px;
}

@media (max-width: 980px) {
  .chat-panel-root {
    width: 100%;
    align-self: stretch;
    position: static;
  }

  .contract-chat {
    max-height: none;
  }
}

@media (max-width: 640px) {
  .contract-chat {
    min-height: 500px;
  }

  .contract-chat__message {
    max-width: 94%;
  }
}