/* Full-screen shell aligned with the AI chat layout */
.messages-shell {
  display: flex;
  flex: 1;
  min-height: 0;
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / 0.08), transparent 28rem),
    linear-gradient(180deg, hsl(var(--background)) 0%, hsl(var(--background)) 100%);
}

.messages-alert-wrap {
  padding: 1rem 1rem 0;
  background: hsl(var(--background));
}

.messages-spotlight-alert {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  border-radius: 1rem;
  border: 1px solid hsl(var(--border) / 0.8);
  padding: 0.9rem 1rem;
  box-shadow: 0 18px 50px -32px hsl(0 0% 0% / 0.85);
}

.messages-spotlight-copy {
  min-width: 0;
}

.messages-spotlight-error {
  background: linear-gradient(135deg, hsl(var(--destructive) / 0.14), hsl(var(--background)));
  border-color: hsl(var(--destructive) / 0.3);
}

.messages-spotlight-warning {
  background: linear-gradient(135deg, hsl(38 92% 50% / 0.16), hsl(var(--background)));
  border-color: hsl(38 92% 50% / 0.25);
}

.messages-spotlight-info {
  background: linear-gradient(135deg, hsl(var(--primary) / 0.16), hsl(var(--background)));
  border-color: hsl(var(--primary) / 0.25);
}

.messages-sidebar {
  width: 20rem;
  max-width: 22rem;
  border-right: 1px solid hsl(var(--border));
  background: hsl(var(--card));
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex-shrink: 0;
}

.messages-sidebar-header {
  padding: 1rem 1rem 0.9rem;
  border-bottom: 1px solid hsl(var(--border));
  background: hsl(var(--card) / 0.95);
  backdrop-filter: blur(10px);
}

.messages-title-row,
.messages-sidebar-actions,
.messages-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.messages-title-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.messages-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: hsl(var(--foreground));
}

.messages-status-row {
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  letter-spacing: 0.025em;
}

/* Modern conversation list */
.messages-sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.messages-list-empty {
  border: 2px dashed hsl(var(--border));
  border-radius: 1rem;
  background: hsl(var(--muted) / 0.3);
  padding: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: hsl(var(--muted-foreground));
}

/* Modern conversation items */
.conversation-item {
  border: 1px solid hsl(var(--border) / 0.55);
  border-radius: 0.9rem;
  padding: 0.95rem 1rem;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.conversation-item:hover {
  background: hsl(var(--muted) / 0.45);
  border-color: hsl(var(--primary) / 0.18);
  transform: translateY(-1px);
  box-shadow: 0 16px 30px -26px hsl(0 0% 0% / 0.85);
}

.conversation-item-active {
  background: linear-gradient(135deg, hsl(var(--primary) / 0.14), hsl(var(--background)));
  border-color: hsl(var(--primary) / 0.3);
  box-shadow: inset 0 0 0 1px hsl(var(--primary) / 0.08);
}

.conversation-item-main {
  flex: 1;
  min-width: 0;
}

.conversation-item-heading,
.conversation-item-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  justify-content: space-between;
}

.conversation-item-name {
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: hsl(var(--foreground));
}

.conversation-item-preview {
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 0.25rem;
  flex: 1;
}

.conversation-item-unread {
  min-width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0 0.5rem;
  box-shadow: 0 2px 4px hsl(var(--primary) / 0.2);
}

.conversation-item-avatar {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  border: 1px solid hsl(var(--border) / 0.35);
  color: hsl(var(--foreground));
}

.conversation-item-avatar-dm {
  background: linear-gradient(135deg, hsl(var(--primary) / 0.18), hsl(var(--primary) / 0.08));
}

.conversation-item-avatar-group {
  background: linear-gradient(135deg, hsl(216 92% 60% / 0.22), hsl(192 92% 55% / 0.12));
}

.conversation-item-avatar-team {
  background: linear-gradient(135deg, hsl(158 75% 42% / 0.22), hsl(143 70% 52% / 0.12));
}

.conversation-item-avatar-global {
  background: linear-gradient(135deg, hsl(38 92% 56% / 0.24), hsl(16 92% 60% / 0.12));
}

.conversation-item-avatar-self {
  background: linear-gradient(135deg, hsl(280 70% 60% / 0.2), hsl(324 70% 60% / 0.12));
}

.conversation-item-avatar-vault {
  background: linear-gradient(135deg, hsl(0 0% 100% / 0.08), hsl(0 0% 100% / 0.02));
}

.conversation-item-avatar-default {
  background: linear-gradient(135deg, hsl(var(--muted)), hsl(var(--muted) / 0.7));
}

.conversation-item-time {
  font-size: 0.7rem;
  color: hsl(var(--muted-foreground));
  flex-shrink: 0;
}

.conversation-item-badge {
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  font-size: 0.62rem;
  font-weight: 600;
  background: hsl(var(--primary) / 0.1);
  color: hsl(var(--primary));
  flex-shrink: 0;
}

/* Modern main conversation area */
.messages-main {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto;
  background: hsl(var(--background));
}

.messages-main-header {
  border-bottom: 1px solid hsl(var(--border));
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: hsl(var(--card) / 0.95);
  backdrop-filter: blur(10px);
}

.messages-header-main {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.messages-back-button {
  flex-shrink: 0;
}

.messages-header-meta {
  min-width: 0;
}

.messages-header-title {
  font-size: 1.125rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: hsl(var(--foreground));
}

.messages-header-subtitle {
  color: hsl(var(--muted-foreground));
  font-size: 0.75rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 0.25rem;
}

.messages-header-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.messages-main-empty {
  display: grid;
  place-items: center;
  padding: 3rem;
}

.messages-main-empty-card {
  width: min(28rem, 100%);
  border: 1px solid hsl(var(--border) / 0.7);
  border-radius: 1.5rem;
  padding: 2rem;
  text-align: center;
  background:
    radial-gradient(circle at top, hsl(var(--primary) / 0.12), transparent 65%),
    hsl(var(--card) / 0.96);
  box-shadow: 0 28px 80px -44px hsl(0 0% 0% / 0.7);
}

.messages-main-empty-orb {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1.2rem;
  margin: 0 auto 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, hsl(var(--primary) / 0.18), hsl(var(--primary) / 0.06));
  border: 1px solid hsl(var(--primary) / 0.18);
}

.messages-main-empty-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: hsl(var(--foreground));
}

.messages-main-empty-copy {
  margin: 0.65rem auto 1.25rem;
  max-width: 22rem;
  color: hsl(var(--muted-foreground));
  font-size: 0.9rem;
  line-height: 1.55;
}

/* Modern call and transcript strips */
.messages-call-strip,
.messages-transcript-preview {
  padding: 0.85rem 1.25rem;
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  border-bottom: 1px solid hsl(var(--border));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: hsl(var(--muted) / 0.3);
}

/* Modern message timeline */
.messages-timeline {
  padding: 1.5rem;
  overflow-y: auto;
  display: grid;
  gap: 1.5rem;
  background:
    linear-gradient(180deg, hsl(var(--background)) 0%, hsl(var(--muted) / 0.14) 100%);
}

.message-row {
  display: flex;
  margin-bottom: 0.5rem;
}

.message-row-me {
  justify-content: flex-end;
}

.message-row-them {
  justify-content: flex-start;
}

/* Modern message bubbles */
.message-bubble {
  max-width: min(76%, 600px);
  border-radius: 1rem;
  border: 1px solid hsl(var(--border));
  padding: 1rem;
  box-shadow: 0 2px 8px hsl(0 0% 0% / 0.06);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.message-bubble:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 16px hsl(0 0% 0% / 0.08);
}

.message-bubble-me {
  background: linear-gradient(135deg, hsl(var(--primary)) 0%, hsl(var(--primary) / 0.9) 100%);
  border-color: hsl(var(--primary) / 0.3);
  color: hsl(var(--primary-foreground));
}

.message-bubble-them {
  background: linear-gradient(135deg, hsl(var(--muted)) 0%, hsl(var(--muted) / 0.9) 100%);
  border-color: hsl(var(--border) / 0.5);
}

.message-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  margin-bottom: 0.75rem;
}

.message-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  overflow: hidden;
  background: hsl(var(--muted));
  color: hsl(var(--foreground));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  border: 2px solid hsl(var(--primary) / 0.2);
}

.message-time {
  margin-left: auto;
}

.message-edited {
  font-size: 0.625rem;
  opacity: 0.7;
}

.message-body {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.5;
  font-size: 0.875rem;
}

/* Modern attachments */
.message-attachments {
  margin-top: 1rem;
  display: grid;
  gap: 0.5rem;
}

.message-attachment-link,
.message-voice-note {
  border: 1px solid hsl(var(--border));
  border-radius: 0.5rem;
  padding: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.message-attachment-link:hover {
  background: hsl(var(--muted) / 0.6);
  transform: translateY(-1px);
}

.message-voice-note {
  flex-direction: column;
  align-items: flex-start;
}

/* Modern references */
.message-reference-wrap {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.message-reference-pill {
  border-radius: 999px;
  border: 1px solid hsl(var(--border));
  padding: 0.25rem 0.75rem;
  font-size: 0.625rem;
  color: hsl(var(--muted-foreground));
  text-decoration: none;
  transition: all 0.2s ease;
  background: hsl(var(--muted) / 0.5);
}

.message-reference-pill:hover {
  background: hsl(var(--muted) / 0.8);
  transform: translateY(-1px);
}

/* Modern suggestions */
.message-suggestions {
  margin-top: 1rem;
  display: grid;
  gap: 0.75rem;
}

.message-suggestion-card {
  border: 1px solid hsl(var(--border));
  border-radius: 0.5rem;
  padding: 1rem;
  background: hsl(var(--muted) / 0.3);
  transition: all 0.2s ease;
}

.message-suggestion-card:hover {
  background: hsl(var(--muted) / 0.5);
  transform: translateY(-1px);
}

.message-suggestion-title {
  font-size: 0.75rem;
  text-transform: capitalize;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.message-suggestion-actions {
  display: flex;
  gap: 0.5rem;
}

/* Modern reactions */
.message-reaction-panel {
  margin-top: 1rem;
  display: grid;
  gap: 0.5rem;
}

.message-reaction-add-row {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.reaction-add-btn {
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: hsl(var(--muted-foreground));
  transition: all 0.2s ease;
}

.reaction-add-btn:hover {
  border-color: hsl(var(--border));
  background: hsl(var(--muted) / 0.6);
  color: hsl(var(--foreground));
  transform: scale(1.1);
}

.message-reaction-summary {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.reaction-pill {
  border-radius: 999px;
  border: 1px solid hsl(var(--border));
  padding: 0.25rem 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.625rem;
  background: hsl(var(--card));
  transition: all 0.2s ease;
}

.reaction-pill:hover {
  transform: scale(1.1);
}

.reaction-pill-me {
  border-color: hsl(var(--primary) / 0.5);
  background: hsl(var(--primary) / 0.1);
  color: hsl(var(--primary));
}

/* Modern composer */
.messages-composer {
  position: relative;
  border-top: 1px solid hsl(var(--border));
  padding: 1.5rem;
  display: grid;
  gap: 0.75rem;
  background: hsl(var(--card) / 0.95);
  backdrop-filter: blur(10px);
}

@media (max-width: 767px) {
  .messages-shell {
    display: flex;
    flex-direction: column;
  }

  .messages-sidebar,
  .messages-main {
    width: 100%;
    max-width: none;
    height: 100%;
    min-height: 0;
  }

  .messages-shell-list .messages-main {
    display: none;
  }

  .messages-shell-conversation .messages-sidebar {
    display: none;
  }

  .messages-composer {
    padding: 0.75rem;
  }
}

.messages-composer-drag {
  background: hsl(var(--primary) / 0.08);
  border-color: hsl(var(--primary) / 0.2);
}

.messages-typing-line {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  padding: 0.5rem;
  background: hsl(var(--muted) / 0.3);
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
}

.typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.typing-dots span {
  width: 0.25rem;
  height: 0.25rem;
  border-radius: 999px;
  background: hsl(var(--primary));
  animation: typingBounce 1.1s infinite ease-in-out;
}

.typing-dots span:nth-child(2) {
  animation-delay: 0.14s;
}

.typing-dots span:nth-child(3) {
  animation-delay: 0.28s;
}

@keyframes typingBounce {
  0%, 80%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  40% {
    transform: translateY(-2px);
    opacity: 1;
  }
}

/* Modern composer elements */
.composer-chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.composer-chip {
  border-radius: 999px;
  border: 1px solid hsl(var(--border));
  background: hsl(var(--muted) / 0.4);
  padding: 0.25rem 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.625rem;
  transition: all 0.2s ease;
}

.composer-chip:hover {
  background: hsl(var(--muted) / 0.6);
  transform: translateY(-1px);
}

.composer-chip-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.composer-chip-remove:hover {
  background: hsl(var(--destructive));
  color: hsl(var(--destructive-foreground));
}

.messages-recording-line {
  color: hsl(var(--destructive));
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.75rem;
  background: hsl(var(--destructive) / 0.1);
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
  border: 1px solid hsl(var(--destructive) / 0.2);
}

.messages-composer-row {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: end;
}

.messages-composer-input-wrap {
  position: relative;
}

.messages-composer-textarea {
  min-height: 3rem;
  max-height: 9rem;
  width: 100%;
  resize: none;
  border: 1px solid hsl(var(--border));
  border-radius: 0.75rem;
  background: hsl(var(--background));
  padding: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  transition: all 0.2s ease;
}

.messages-composer-textarea:focus {
  outline: none;
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 2px hsl(var(--primary) / 0.15);
}

/* Modern mention menu */
.mention-menu {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 0.75rem);
  border: 1px solid hsl(var(--border));
  border-radius: 0.75rem;
  background: hsl(var(--card));
  box-shadow: 0 8px 26px hsl(0 0% 0% / 0.24);
  max-height: 16rem;
  overflow-y: auto;
  z-index: 20;
  backdrop-filter: blur(10px);
}

.mention-menu-empty {
  padding: 0.75rem;
  color: hsl(var(--muted-foreground));
  font-size: 0.75rem;
}

.mention-option {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  padding: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

.mention-option-active,
.mention-option:hover {
  background: hsl(var(--muted) / 0.6);
}

.mention-option-copy {
  min-width: 0;
}

.mention-option-title {
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mention-option-sub {
  font-size: 0.625rem;
  color: hsl(var(--muted-foreground));
}

.messages-composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.75rem;
}

.messages-inline-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
}

/* Responsive design */
@media (max-width: 980px) {
  .messages-sidebar {
    width: 16rem;
    min-width: 16rem;
    border-inline: none;
    border-radius: 0;
  }

  .message-bubble {
    max-width: 86%;
  }
}

@media (max-width: 760px) {
  .messages-main {
    grid-template-rows: auto auto auto auto minmax(0, 1fr) auto;
  }

  .messages-composer-row {
    grid-template-columns: repeat(3, auto) 1fr auto;
  }

  .messages-composer-row > button:last-child {
    grid-column: 5;
    justify-self: end;
  }

  .messages-timeline {
    padding: 1rem;
  }

  .message-bubble {
    padding: 0.75rem;
  }

  .conversation-item {
    padding: 0.75rem;
  }
}

/* Modern animations and transitions */
.message-bubble,
.conversation-item,
.message-attachment-link,
.message-reference-pill,
.message-suggestion-card,
.reaction-pill,
.composer-chip,
.mention-option {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Focus states */
.messages-composer-textarea:focus,
.mention-option:focus {
  outline: 2px solid hsl(var(--primary));
  outline-offset: 2px;
}

/* Loading states */
.messages-composer-textarea:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Dark mode enhancements */
[data-kb-theme="dark"] .message-bubble-them {
  background: linear-gradient(135deg, hsl(var(--muted)) 0%, hsl(var(--muted) / 0.8) 100%);
  border-color: hsl(var(--border) / 0.3);
}

[data-kb-theme="dark"] .conversation-item:hover {
  background: hsl(var(--muted) / 0.4);
}

/* Accessibility improvements */
.message-bubble:focus,
.conversation-item:focus,
.mention-option:focus {
  outline: 2px solid hsl(var(--primary));
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .message-bubble {
    border-width: 2px;
  }
  
  .conversation-item {
    border-width: 2px;
  }
  
  .reaction-pill {
    border-width: 2px;
  }
}