.internal-chat-module {
  display: grid;
  gap: 14px;
}

.internal-chat-module-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.internal-chat-module.is-chat-focus .internal-chat-module-header {
  display: none;
}

.internal-chat-module-header div {
  display: grid;
  gap: 4px;
}

.internal-chat-module-header span,
.internal-chat-workspace > div:first-child span {
  color: #51657d;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.internal-chat-module-header strong {
  color: #172033;
  font-size: 24px;
}

.internal-chat-module-header p {
  max-width: 620px;
  margin: 0;
  color: #667085;
  line-height: 1.45;
}

.internal-chat-open-messenger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  background: #eff6ff;
  color: #1455d9;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.internal-chat-open-messenger:hover {
  border-color: #93c5fd;
  background: #dbeafe;
}

.internal-chat-section-nav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 6px;
  border: 1px solid var(--border, #d9dee7);
  border-radius: 12px;
  background: #ffffff;
}

.internal-chat-section-nav button {
  flex: 0 0 auto;
  padding: 8px 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #42526b;
  cursor: pointer;
}

.internal-chat-section-nav button.is-active,
.internal-chat-section-nav button:hover {
  background: #eaf2fb;
  color: #174f82;
}

.internal-chat-overview {
  display: grid;
  gap: 14px;
}

.internal-chat-metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.internal-chat-metric-grid article,
.internal-chat-overview-grid section,
.internal-chat-workspace,
.internal-chat-workspace-grid article {
  border: 1px solid var(--border, #d9dee7);
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(16, 24, 40, 0.05);
}

.internal-chat-metric-grid article {
  display: grid;
  gap: 6px;
  padding: 14px;
}

.internal-chat-metric-grid span,
.internal-chat-metric-grid small {
  color: #667085;
}

.internal-chat-metric-grid strong {
  color: #172033;
  font-size: 26px;
}

.internal-chat-overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr) minmax(260px, 0.8fr);
  gap: 12px;
}

.internal-chat-overview-grid section {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 14px;
}

.internal-chat-overview-grid h3,
.internal-chat-workspace h3 {
  margin: 0;
  color: #172033;
}

.internal-chat-overview-row {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px;
  border: 1px solid var(--border, #d9dee7);
  border-radius: 10px;
  background: #fbfcfe;
  text-align: left;
  cursor: pointer;
}

.internal-chat-overview-row i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #dce9f7;
  color: #1d4b77;
  font-style: normal;
  font-weight: 800;
}

.internal-chat-overview-row span,
.internal-chat-signal-list,
.internal-chat-task-list {
  display: grid;
  gap: 5px;
}

.internal-chat-overview-row small,
.internal-chat-signal-list span {
  color: #667085;
}

.internal-chat-overview-row b {
  padding: 3px 7px;
  border-radius: 999px;
  background: #c73535;
  color: #ffffff;
}

.internal-chat-task-list button {
  padding: 9px 10px;
  border: 1px solid var(--border, #d9dee7);
  border-radius: 10px;
  background: #f7f9fc;
  text-align: left;
  cursor: pointer;
}

.internal-chat-workspace {
  display: grid;
  gap: 16px;
  padding: 18px;
}

.internal-chat-workspace > div:first-child {
  display: grid;
  gap: 6px;
}

.internal-chat-workspace p {
  margin: 0;
  color: #667085;
}

.internal-chat-workspace-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.internal-chat-workspace-grid article {
  display: grid;
  gap: 8px;
  padding: 14px;
}

.internal-chat-workspace-grid span {
  color: #667085;
  line-height: 1.45;
}

.internal-chat-shell {
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr) minmax(220px, 280px);
  min-height: 720px;
  max-height: calc(100vh - 210px);
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #d9dee7);
  border-radius: 8px;
  overflow: hidden;
}

.internal-chat-sidebar {
  border-right: 1px solid var(--border, #d9dee7);
  min-width: 0;
  background: #ffffff;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
}

.internal-chat-search {
  padding: 8px 12px 12px;
  border-bottom: 1px solid var(--border, #d9dee7);
}

.internal-chat-search input {
  height: 38px;
  border: 1px solid #dbe3ee;
  border-radius: 999px;
  background: #f2f6fb;
  padding: 0 14px;
}

.internal-chat-zalo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 12px 8px;
}

.internal-chat-zalo-head strong {
  color: #152033;
  font-size: 22px;
}

.internal-chat-icon-button {
  width: 34px;
  height: 34px;
  border: 1px solid #dbe3ee;
  border-radius: 50%;
  background: #ffffff;
  color: #276da8;
  cursor: pointer;
}

.internal-chat-sidebar-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 0 12px 10px;
  border-bottom: 1px solid var(--border, #d9dee7);
}

.internal-chat-sidebar-tabs button {
  height: 34px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #52657a;
  cursor: pointer;
}

.internal-chat-sidebar-tabs button.is-active {
  background: #e8f3ff;
  color: #0969b8;
  font-weight: 700;
}

.internal-chat-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 12px;
  border-bottom: 1px solid var(--border, #d9dee7);
}

.internal-chat-brand div,
.internal-chat-search label,
.internal-chat-new label {
  display: grid;
  gap: 6px;
}

.internal-chat-brand span,
.internal-chat-search label,
.internal-chat-new label {
  color: #667085;
  font-size: 12px;
}

.internal-chat-brand strong {
  color: #172033;
  font-size: 18px;
}

.internal-chat-new {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-bottom: 1px solid var(--border, #d9dee7);
}

.internal-chat-new input,
.internal-chat-search input {
  min-width: 0;
  width: 100%;
  box-sizing: border-box;
}

.internal-chat-list {
  display: grid;
  gap: 4px;
  align-content: start;
  min-height: 0;
  overflow: auto;
  padding: 8px;
}

.internal-chat-conversation {
  display: grid;
  gap: 4px;
  padding: 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.internal-chat-person {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.internal-chat-person:hover,
.internal-chat-conversation:hover,
.internal-chat-conversation.is-active {
  background: #eef6ff;
}

.internal-chat-person-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #dce9f7;
  color: #1d4b77;
  font-weight: 800;
}

.internal-chat-person span:nth-child(2) {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.internal-chat-person strong,
.internal-chat-person small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.internal-chat-person small {
  color: #667085;
}

.internal-chat-person i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #27b36a;
  box-shadow: 0 0 0 3px #e4f7ee;
}

.internal-chat-directory-group {
  padding: 10px 10px 4px;
  color: #7a8797;
  font-size: 12px;
  font-weight: 800;
}

.internal-chat-conversation span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.internal-chat-conversation-title {
  justify-content: flex-start !important;
}

.internal-chat-conversation-title i,
.internal-chat-people i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  border-radius: 50%;
  background: #dce9f7;
  color: #1d4b77;
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
}

.internal-chat-conversation-title strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.internal-chat-conversation small {
  overflow: hidden;
  color: #667085;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.internal-chat-conversation b {
  min-width: 22px;
  padding: 2px 6px;
  border-radius: 999px;
  background: #c73535;
  color: #ffffff;
  font-size: 12px;
  text-align: center;
}

.internal-chat-thread {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 0;
}

.internal-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 58px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border, #d9dee7);
  background: #ffffff;
}

.internal-chat-header div {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.internal-chat-header span {
  color: #667085;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.internal-chat-messages {
  display: grid;
  align-content: end;
  gap: 10px;
  min-height: 0;
  padding: 16px;
  overflow: auto;
  background: linear-gradient(180deg, #f5f8fc 0%, #eef4fb 100%);
}

.internal-chat-message {
  max-width: min(680px, 84%);
  padding: 10px 12px;
  border: 1px solid var(--border, #d9dee7);
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.04);
}

.internal-chat-message header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
  color: #5d6878;
  font-size: 12px;
}

.internal-chat-message p {
  margin: 0;
  line-height: 1.45;
}

.internal-chat-message.is-mine {
  justify-self: end;
  background: #dbf2ff;
  border-color: #a8d8f0;
}

.internal-chat-attachments {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.internal-chat-attachment-card {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--border, #d9dee7);
  border-radius: 8px;
  background: #ffffff;
  color: inherit;
  text-decoration: none;
}

.internal-chat-pending {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.internal-chat-pending span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 220px;
  padding: 4px 8px;
  border: 1px solid var(--border, #d9dee7);
  border-radius: 999px;
  background: #f3f7fa;
  font-size: 12px;
}

.internal-chat-attach {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 10px;
  border: 1px solid var(--border, #d9dee7);
  border-radius: 999px;
  cursor: pointer;
}

.internal-chat-empty {
  padding: 18px;
  color: #667085;
}

.internal-chat-info {
  display: grid;
  align-content: start;
  gap: 14px;
  min-width: 0;
  padding: 16px;
  border-left: 1px solid var(--border, #d9dee7);
  background: #ffffff;
  overflow: auto;
}

.internal-chat-info-empty,
.internal-chat-info-card,
.internal-chat-info-section {
  display: grid;
  gap: 8px;
}

.internal-chat-info-card {
  justify-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border, #d9dee7);
  text-align: center;
}

.internal-chat-info-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #e2f0e8;
  color: #1c6840;
  font-weight: 800;
}

.internal-chat-info-card span,
.internal-chat-info-section p,
.internal-chat-info-empty span {
  color: #667085;
  font-size: 13px;
  line-height: 1.4;
}

.internal-chat-info-section h3 {
  margin: 0;
  color: #172033;
  font-size: 14px;
}

.internal-chat-info-section a {
  display: grid;
  gap: 3px;
  padding: 8px;
  border: 1px solid var(--border, #d9dee7);
  border-radius: 8px;
  color: inherit;
  text-decoration: none;
}

.internal-chat-info-section small {
  color: #667085;
}

.internal-chat-people {
  display: grid;
  gap: 8px;
}

.internal-chat-people span {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.internal-chat-welcome {
  display: grid;
  place-content: center;
  gap: 8px;
  height: 100%;
  padding: 24px;
  color: #667085;
  text-align: center;
}

.internal-chat-welcome strong {
  color: #172033;
  font-size: 20px;
}

.internal-chat-composer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border, #d9dee7);
  background: #ffffff;
}

.internal-chat-composer textarea {
  min-height: 42px;
  max-height: 140px;
  border-radius: 999px;
  resize: vertical;
}

@media (max-width: 760px) {
  .internal-chat-module-header {
    display: grid;
  }

  .internal-chat-metric-grid,
  .internal-chat-overview-grid,
  .internal-chat-workspace-grid {
    grid-template-columns: 1fr;
  }

  .internal-chat-shell {
    grid-template-columns: 1fr;
    max-height: none;
  }

  .internal-chat-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--border, #d9dee7);
  }

  .internal-chat-list {
    max-height: 220px;
  }

  .internal-chat-info {
    display: none;
  }

  .internal-chat-message {
    max-width: 94%;
  }
}

/* --- MESSENGER LOOK & FEEL FOR INTERNAL CHAT --- */

.internal-chat-shell {
  display: grid !important;
  grid-template-columns: minmax(300px, 340px) minmax(0, 1fr) minmax(260px, 300px) !important;
  background: #ffffff !important;
  border: 1px solid #e2e8f0 !important;
  border-radius: 16px !important;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05) !important;
}

.internal-chat-search input {
  background: #f2f6fb !important;
  border: 1px solid #e2e8f0 !important;
  border-radius: 999px !important;
  padding: 0 16px !important;
  font-size: 13.5px !important;
  width: 100% !important;
}

.internal-chat-search input:focus {
  border-color: #0b75c9 !important;
  background: #ffffff !important;
  outline: none;
}

.internal-chat-sidebar-tabs button {
  font-weight: 600;
  transition: all 150ms;
}

.internal-chat-sidebar-tabs button.is-active {
  background: #e8f3ff !important;
  color: #0969b8 !important;
}

.internal-chat-conversation {
  border-radius: 12px !important;
  margin: 2px 6px !important;
  transition: background 150ms ease !important;
}

.internal-chat-conversation.is-active {
  background: #e8f3ff !important;
  color: #0969b8 !important;
}

.internal-chat-conversation.is-active strong {
  color: #0969b8 !important;
}

.internal-chat-conversation i,
.internal-chat-person-avatar,
.internal-chat-people i {
  border-radius: 50% !important;
  background: linear-gradient(135deg, #0b75c9, #1d4b77) !important;
  color: #ffffff !important;
  box-shadow: 0 2px 4px rgba(11, 117, 201, 0.2);
}

.internal-chat-messages {
  background: linear-gradient(180deg, #f6f9fd 0%, #edf4fb 100%) !important;
}

.internal-chat-message {
  justify-self: start !important; /* CRITICAL: prevent stretching, align left */
  max-width: min(680px, 78%) !important;
  padding: 10px 14px !important;
  border: 1px solid #e2e8f0 !important;
  border-radius: 16px !important;
  background: #ffffff !important;
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.04) !important;
  display: inline-block !important; /* wrap content */
  width: auto !important;
}

.internal-chat-message.is-mine {
  justify-self: end !important; /* align right */
  background: #dbf2ff !important; /* light blue bubble matching messenger */
  border-color: #a8d8f0 !important;
}

.internal-chat-message header {
  font-size: 11px !important;
  color: #64748b !important;
  font-weight: 500 !important;
}

.internal-chat-message p {
  font-size: 13.5px !important;
  color: #1e293b !important;
}

.internal-chat-composer textarea:focus {
  border-color: #0b75c9 !important;
  background: #ffffff !important;
  outline: none;
  box-shadow: 0 0 0 3px rgba(11, 117, 201, 0.15) !important;
}

.internal-chat-composer .send-button:hover {
  background: #0969b8 !important;
}

.internal-chat-tool-btn {
  transition: all 150ms;
}

.internal-chat-tool-btn:hover {
  color: #0b75c9 !important;
  background-color: #f1f5f9 !important;
  border-radius: 6px;
}