.messages-workspace {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr) minmax(220px, 280px);
  min-height: calc(100vh - 110px);
  border: 1px solid var(--line, #d9e3f0);
  border-radius: var(--radius, 12px);
  background: #fff;
  overflow: hidden;
}

.messages-workspace.unavailable {
  display: grid;
  place-items: center;
  min-height: 360px;
}

.messages-list-panel,
.messages-thread-panel,
.messages-context-panel {
  min-height: 0;
  min-width: 0;
  background: #fff;
}

.messages-list-panel {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line, #d9e3f0);
  overflow: hidden;
}

.messages-context-panel {
  border-left: 1px solid var(--line, #d9e3f0);
  padding: 18px;
}

.messages-panel-header,
.messages-thread-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 78px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line, #d9e3f0);
}

.messages-panel-header h2,
.messages-thread-header h2 {
  margin: 0;
  color: var(--text, #0f172a);
  font-size: 1.2rem;
}

.messages-thread-header span {
  display: block;
  min-height: 18px;
  color: var(--muted, #64748b);
  font-size: 0.78rem;
  font-weight: 750;
}

.messages-search,
.messages-archive-toggle {
  flex: 0 0 auto;
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line, #d9e3f0);
  color: var(--muted, #64748b);
  font-size: 0.75rem;
  font-weight: 850;
  text-transform: uppercase;
}

.messages-archive-toggle {
  grid-template-columns: auto 1fr;
  align-items: center;
}

.messages-search input,
.messages-create-form input,
.messages-create-form select,
.messages-create-form textarea,
.message-composer textarea {
  width: 100%;
  border: 1px solid var(--line-strong, #bfd0e4);
  border-radius: var(--radius, 12px);
  background: #fff;
  color: var(--text, #0f172a);
  font: inherit;
}

.messages-search input {
  min-height: 38px;
  padding: 0 10px;
  text-transform: none;
}

.messages-create-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 14px;
  border-bottom: 1px solid var(--line, #d9e3f0);
  background: #f8fafc;
}

.messages-create-form label {
  display: grid;
  gap: 5px;
  color: var(--muted, #64748b);
  font-size: 0.76rem;
  font-weight: 850;
  text-transform: uppercase;
}

.messages-create-form input,
.messages-create-form select {
  min-height: 36px;
  padding: 0 9px;
  text-transform: none;
}

.messages-create-form textarea {
  min-height: 82px;
  padding: 9px;
  resize: vertical;
  text-transform: none;
}

.messages-create-form .wide-field,
.message-form-actions {
  grid-column: 1 / -1;
}

.message-form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.conversation-list {
  flex: 1 1 auto;
  display: grid;
  align-content: start;
  min-height: 0;
  max-height: none;
  overflow-x: hidden;
  overflow-y: auto;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  box-sizing: border-box;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.conversation-list-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 10px;
  width: 100%;
  padding: 12px 14px;
  border: 0;
  border-bottom: 1px solid var(--line, #d9e3f0);
  background: #fff;
  color: var(--text, #0f172a);
  text-align: left;
  height: auto;
  box-sizing: border-box;
  cursor: pointer;
}

.conversation-list-item.active {
  background: var(--blue-soft, #eaf2ff);
}

.conversation-list-item strong,
.conversation-list-item small,
.conversation-list-item em {
  display: block;
  overflow-wrap: anywhere;
}

.conversation-list-item strong {
  font-size: 0.92rem;
}

.conversation-list-item small,
.conversation-list-item em {
  color: var(--muted, #64748b);
  font-size: 0.74rem;
  font-style: normal;
  font-weight: 750;
}

.conversation-list-item em {
  grid-column: 1 / -1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conversation-list-item b,
.message-unread-badge {
  display: inline-flex;
  min-width: 22px;
  min-height: 22px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--blue, #165dbb);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 900;
}

.conversation-unread-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin: 0 6px;
  border-radius: 999px;
  background: var(--blue, #165dbb);
  vertical-align: middle;
}

.message-unread-badge {
  margin-left: auto;
}

.message-context-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line, #d9e3f0);
  background: #f8fafc;
  color: var(--muted, #64748b);
  font-size: 0.78rem;
  font-weight: 850;
}

.message-context-banner strong {
  color: var(--blue, #165dbb);
}

.messages-error {
  padding: 10px 18px;
  border-bottom: 1px solid #f1c0bd;
  background: #fff5f5;
  color: #a52720;
  font-size: 0.82rem;
  font-weight: 850;
}

.messages-thread {
  display: grid;
  align-content: start;
  gap: 10px;
  height: calc(100vh - 330px);
  min-height: 300px;
  padding: 18px;
  overflow: auto;
  background: #f8fafc;
}

.message-bubble {
  display: grid;
  gap: 6px;
  max-width: min(720px, 88%);
  padding: 10px 12px;
  border: 1px solid var(--line, #d9e3f0);
  border-radius: var(--radius, 12px);
  background: #fff;
}

.message-bubble.mine {
  justify-self: end;
  border-color: #bfdbfe;
  background: var(--blue-soft, #eaf2ff);
}

.message-bubble.failed {
  border-color: #f1c0bd;
  background: #fff5f5;
}

.message-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  color: var(--muted, #64748b);
  font-size: 0.72rem;
  font-weight: 800;
}

.message-meta strong {
  color: var(--text, #0f172a);
}

.message-bubble p {
  margin: 0;
  color: var(--text, #0f172a);
  line-height: 1.45;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.message-reply {
  border-left: 2px solid var(--blue, #165dbb);
  padding-left: 8px;
  color: var(--muted, #64748b);
  font-size: 0.78rem;
  font-weight: 750;
}

.message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.message-attachment {
  color: var(--blue, #165dbb);
  font-size: 0.82rem;
  font-weight: 850;
  text-decoration: none;
}

.message-state {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  color: var(--muted, #64748b);
  font-size: 0.72rem;
  font-weight: 750;
}

.message-composer {
  display: grid;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1px solid var(--line, #d9e3f0);
  background: #fff;
}

.message-composer textarea {
  min-height: 88px;
  padding: 10px;
  resize: vertical;
}

.message-composer-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.message-file-button {
  cursor: pointer;
}

.messages-context-panel dl {
  display: grid;
  gap: 0;
  margin: 0;
  border: 1px solid var(--line, #d9e3f0);
  border-radius: var(--radius, 12px);
  overflow: hidden;
}

.messages-context-panel dl > div {
  display: grid;
  grid-template-columns: minmax(90px, 0.45fr) minmax(0, 1fr);
  border-bottom: 1px solid var(--line, #d9e3f0);
}

.messages-context-panel dl > div:last-child {
  border-bottom: 0;
}

.messages-context-panel dt,
.messages-context-panel dd {
  margin: 0;
  padding: 10px;
  overflow-wrap: anywhere;
}

.messages-context-panel dt {
  background: #f8fafc;
  color: var(--muted, #64748b);
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
}

.messages-context-panel dd {
  color: var(--text, #0f172a);
  font-weight: 800;
}

.messages-empty {
  display: grid;
  gap: 6px;
  place-items: center;
  min-height: 180px;
  padding: 22px;
  color: var(--muted, #64748b);
  font-weight: 800;
  text-align: center;
}

.messages-empty strong {
  color: var(--text, #0f172a);
  font-size: 1rem;
}

@media (max-width: 1180px) {
  .messages-workspace {
    grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
  }

  .messages-context-panel {
    display: none;
  }
}

@media (max-width: 760px) {
  .messages-workspace {
    grid-template-columns: 1fr;
  }

  .messages-list-panel,
  .messages-context-panel {
    border: 0;
  }

  .messages-thread-panel {
    border-top: 1px solid var(--line, #d9e3f0);
  }

  .messages-create-form {
    grid-template-columns: 1fr;
  }

  .conversation-list,
  .messages-thread {
    max-height: none;
    height: auto;
  }
}

/* Modern BUYSTAN messenger layout */
.messages-workspace {
  grid-template-columns: minmax(300px, 340px) minmax(0, 1fr) minmax(260px, 300px);
  height: calc(100vh - 132px);
  min-height: 0;
  border-radius: 8px;
  background: #ffffff;
}

.messages-workspace.context-collapsed {
  grid-template-columns: minmax(300px, 340px) minmax(0, 1fr);
}

.messages-workspace.context-collapsed .messages-context-panel {
  display: none;
}

.messages-list-panel,
.messages-thread-panel,
.messages-context-panel {
  min-height: 0;
}

.messages-list-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.messages-thread-panel {
  display: flex;
  flex-direction: column;
  background: #f6f8fb;
}

.messages-panel-header,
.messages-thread-header {
  min-height: 72px;
  padding: 14px 18px;
  background: #fff;
}

.messages-thread-header {
  position: sticky;
  top: 0;
  z-index: 3;
  flex-wrap: wrap;
}

.thread-contact,
.thread-header-actions,
.conversation-row-top,
.conversation-badges,
.message-context-banner,
.context-panel-header {
  display: flex;
  align-items: center;
}

.thread-contact {
  flex: 1 1 260px;
  gap: 10px;
  min-width: 0;
}

.thread-contact > div {
  min-width: 0;
}

.thread-contact h2,
.conversation-row-top strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.thread-header-actions {
  flex: 0 1 auto;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  min-width: 0;
  max-width: min(100%, 420px);
  margin-left: auto;
}

.context-pill,
.role-badge,
.demo-badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 900;
  white-space: nowrap;
}

.context-pill {
  border: 1px solid #cfe0f5;
  background: #eef5ff;
  color: #0f55ad;
  max-width: min(100%, 280px);
  overflow: hidden;
  text-overflow: ellipsis;
}

.role-badge {
  background: #eef2f7;
  color: #334155;
}

.demo-badge {
  background: #fff7e6;
  color: #9a5b00;
}

.messages-search {
  flex: 0 0 auto;
  padding: 12px 14px;
  background: #fff;
}

.messages-search input,
.message-composer textarea {
  border-radius: 10px;
}

.conversation-list {
  flex: 1 1 auto;
  height: auto;
  min-height: 0;
  max-height: none;
  overflow-x: hidden;
  overflow-y: auto;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  box-sizing: border-box;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.conversation-list-item {
  position: relative;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 8px 10px;
  align-items: start;
  height: auto;
  min-height: 112px;
  padding: 13px 52px 13px 12px;
  border-left: 4px solid transparent;
  box-sizing: border-box;
  overflow: visible;
}

.conversation-list-item:hover {
  background: #f8fbff;
}

.conversation-list-item.active {
  border-left-color: var(--blue, #165dbb);
  background: #eaf2ff;
}

.conversation-avatar {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: #e7f0ff;
  color: #0f55ad;
  font-size: 0.8rem;
  font-weight: 950;
}

.conversation-avatar.large {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
}

.conversation-main {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding-right: 4px;
}

.conversation-row-top {
  justify-content: space-between;
  gap: 8px;
}

.conversation-row-top time,
.message-time {
  color: #64748b;
  font-size: 0.72rem;
  font-weight: 800;
  white-space: nowrap;
}

.conversation-badges {
  gap: 5px;
}

.conversation-list-item em {
  grid-column: auto;
  max-width: 100%;
  color: #334155;
  font-size: 0.78rem;
  line-height: 1.35;
}

.conversation-context {
  display: block;
  color: #0f55ad;
  font-size: 0.74rem;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.conversation-unread-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  right: 16px;
  bottom: 14px;
  z-index: 2;
  width: 24px;
  min-width: 24px;
  height: 24px;
  min-height: 24px;
  flex-shrink: 0;
  border-radius: 999px;
  padding: 0;
  transform: none;
}

.conversation-unread-dot {
  display: none;
}

.message-context-banner {
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  padding: 10px 18px;
  background: #edf5ff;
}

.message-context-banner span {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.message-context-banner strong {
  color: #0f55ad;
  font-size: 0.74rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.message-context-banner em,
.message-context-banner small {
  color: #0f172a;
  font-style: normal;
  font-weight: 850;
}

.message-context-banner small {
  color: #475569;
  font-size: 0.74rem;
}

.messages-thread {
  flex: 1;
  height: auto;
  min-height: 0;
  padding: 18px 22px;
  background: #f4f7fb;
}

.message-date-separator {
  display: flex;
  justify-content: center;
  margin: 2px 0 6px;
}

.message-date-separator span {
  border: 1px solid #d9e3f0;
  border-radius: 999px;
  background: #fff;
  color: #64748b;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 900;
}

.message-bubble {
  max-width: 72%;
  border-radius: 16px 16px 16px 6px;
  background: #fff;
}

.message-bubble.mine {
  border-color: #165dbb;
  border-radius: 16px 16px 6px 16px;
  background: #165dbb;
  color: #fff;
}

.message-bubble.mine p,
.message-bubble.mine .message-meta strong,
.message-bubble.mine .message-time {
  color: #fff;
}

.message-bubble.theirs {
  justify-self: start;
}

.message-bubble p {
  font-size: 0.92rem;
}

.message-meta {
  font-size: 0.7rem;
}

.message-time {
  justify-self: end;
}

.message-composer {
  position: sticky;
  bottom: 0;
  z-index: 3;
  gap: 8px;
  padding: 12px 16px;
}

.message-composer textarea {
  min-height: 48px;
  max-height: 140px;
  resize: vertical;
}

.message-composer-footer span {
  margin-right: auto;
  color: #64748b;
  font-size: 0.72rem;
  font-weight: 750;
}

.messages-context-panel {
  overflow: auto;
  background: #fff;
}

.context-panel-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34px;
  align-items: start;
  gap: 12px;
  margin-bottom: 14px;
}

.context-panel-header > div {
  min-width: 0;
}

.context-panel-header h3 {
  margin: 2px 0 0;
  color: #0f172a;
  font-size: 1.05rem;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.compact-context-close {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  justify-self: end;
  font-size: 1.15rem;
}

.messages-context-panel dl {
  border-radius: 8px;
}

.context-open-button {
  width: 100%;
  margin-top: 12px;
}

.mobile-message-back {
  display: none;
}

.theme-buystan-modern .messages-workspace {
  border-color: var(--border-default, #D6DADF);
  border-radius: var(--radius-large, 14px);
  background: var(--background-card, #FFFFFF);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.theme-buystan-modern .messages-list-panel,
.theme-buystan-modern .messages-thread-panel,
.theme-buystan-modern .messages-context-panel,
.theme-buystan-modern .messages-panel-header,
.theme-buystan-modern .messages-thread-header,
.theme-buystan-modern .message-composer {
  background: var(--background-card, #FFFFFF);
  border-color: var(--border-default, #D6DADF);
}

.theme-buystan-modern .messages-create-form,
.theme-buystan-modern .messages-thread,
.theme-buystan-modern .message-context-banner {
  background: var(--background-page, #F8F9FB);
}

.theme-buystan-modern .conversation-list-item {
  border-color: var(--border-default, #D6DADF);
  background: var(--background-card, #FFFFFF);
  color: var(--text-primary, #111214);
}

.theme-buystan-modern .conversation-list-item.active {
  border-left-color: var(--buystan-blue, #1C60B4);
  background: var(--background-selected, #E4ECF8);
}

.theme-buystan-modern .conversation-avatar,
.theme-buystan-modern .conversation-unread {
  background: var(--background-selected, #E4ECF8);
  color: var(--buystan-blue-dark, #123E6E);
}

.theme-buystan-modern .message-bubble {
  border-color: var(--border-default, #D6DADF);
  border-radius: 14px;
  background: var(--background-card, #FFFFFF);
  color: var(--text-primary, #111214);
}

.theme-buystan-modern .message-bubble.mine {
  border-color: #C8D6EA;
  border-radius: 14px;
  background: var(--background-selected, #E4ECF8);
  color: var(--text-primary, #111214);
}

.theme-buystan-modern .message-bubble.mine p,
.theme-buystan-modern .message-bubble.mine .message-meta strong,
.theme-buystan-modern .message-bubble.mine .message-time {
  color: var(--text-primary, #111214);
}

.theme-buystan-modern .message-bubble.failed {
  border-color: #F0BDBA;
  background: #FCE9E8;
}

.theme-buystan-modern .mobile-message-back {
  color: var(--buystan-blue, #1C60B4);
  font-weight: 600;
}

@media (max-width: 1180px) {
  .messages-workspace {
    grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
  }

  .messages-context-panel {
    display: none;
  }
}

@media (max-width: 760px) {
  .messages-workspace,
  .messages-workspace.context-collapsed {
    grid-template-columns: 1fr;
    height: calc(100vh - 116px);
    min-height: 0;
  }

  .messages-list-panel {
    display: flex;
  }

  .messages-thread-panel {
    display: none;
    border-top: 0;
  }

  .messages-workspace.mobile-thread-open .messages-list-panel {
    display: none;
  }

  .messages-workspace.mobile-thread-open .messages-thread-panel {
    display: flex;
  }

  .mobile-message-back {
    display: inline-flex;
    width: max-content;
    border: 0;
    background: transparent;
    color: var(--buystan-blue, #1C60B4);
    font: inherit;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0;
  }

  .messages-thread-header {
    display: grid;
    align-items: start;
  }

  .thread-header-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .conversation-list {
    height: auto;
  }

  .messages-thread {
    padding: 14px;
  }

  .message-bubble {
    max-width: 85%;
  }

  .message-context-banner {
    align-items: flex-start;
  }

  .message-context-banner .table-action {
    display: none;
  }
}