/**
 * Chat Page Styles - Mobile-First Design
 * Version: 2.0 - Signal-inspired with Discord overlapping panels
 *
 * Architecture:
 * - Mobile: Single panel with swipeable side panels
 * - Tablet: Thread sidebar + main chat
 * - Desktop: Thread sidebar + main chat + context panel
 */

/* ==========================================================================
   CSS Custom Properties (Chat-specific)
   ========================================================================== */
:root {
  --chat-sidebar-width: 280px;
  --chat-context-width: 240px;
  --chat-header-height: 56px;
  --chat-input-min-height: 44px;
  --chat-input-max-height: 120px;
  --chat-bottom-tabs-height: 56px;
  --chat-panel-transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Overlapping Panels Container (Discord-style)
   ========================================================================== */
.chat-panels {
  position: relative;
  height: calc(100vh - 4rem);
  overflow: hidden;
  background-color: var(--color-bg-secondary);
}

.chat-panel {
  position: absolute;
  top: 0;
  height: 100%;
  background-color: var(--color-bg-primary);
  transition: var(--chat-panel-transition);
  will-change: transform;
}

/* Left Panel (Threads) */
.chat-panel--left {
  left: 0;
  width: var(--chat-sidebar-width);
  z-index: 10;
  transform: translateX(-100%);
  border-right: 1px solid var(--color-border-default);
}

.chat-panel--left.is-open {
  transform: translateX(0);
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
}

/* Center Panel (Main Chat) */
.chat-panel--center {
  left: 0;
  right: 0;
  width: 100%;
  z-index: 5;
}

/* Right Panel (Context - Users/Polls) */
.chat-panel--right {
  right: 0;
  width: var(--chat-context-width);
  z-index: 10;
  transform: translateX(100%);
  border-left: 1px solid var(--color-border-default);
}

.chat-panel--right.is-open {
  transform: translateX(0);
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
}

/* Panel Overlay (for mobile when panels are open) */
.chat-panel-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 8;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.chat-panel-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ==========================================================================
   Bottom Tab Navigation (Mobile)
   ========================================================================== */
.chat-bottom-tabs {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: var(--chat-bottom-tabs-height);
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border-default);
  padding: 0 var(--spacing-2);
}

.chat-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: var(--spacing-2);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  min-width: 64px;
  min-height: 44px; /* WCAG touch target */
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.chat-tab:hover {
  background-color: var(--color-bg-secondary);
}

.chat-tab.is-active {
  color: var(--color-primary-600);
}

.chat-tab__icon {
  width: 24px;
  height: 24px;
}

.chat-tab__label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
}

.chat-tab__badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  color: white;
  background-color: var(--color-error-500);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   Chat Layout (Legacy - Desktop First, kept for compatibility)
   ========================================================================== */
.chat-layout {
  display: flex;
  height: calc(100vh - 4rem);
  background-color: var(--color-bg-secondary);
}

/* ==========================================================================
   Thread Sidebar
   ========================================================================== */
.thread-sidebar {
  width: var(--chat-sidebar-width);
  background-color: var(--color-bg-primary);
  border-right: 1px solid var(--color-border-default);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.thread-sidebar-header {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-default);
}

.thread-sidebar-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-3);
}

/* Panel Close Button - Only visible on mobile where panels overlay */
.panel-close-btn {
  display: none; /* Hidden on desktop by default */
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

/* Show close buttons only on mobile */
@media (max-width: 767px) {
  .panel-close-btn {
    display: flex;
  }
}

.panel-close-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.panel-close-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.panel-close-btn svg {
  width: 20px;
  height: 20px;
}

/* Thread Search Input */
.thread-search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.thread-search-icon {
  position: absolute;
  left: 10px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.thread-search-input {
  width: 100%;
  padding: 8px 32px 8px 36px;
  font-size: 13px;
  border: 1px solid var(--color-border-default);
  border-radius: 8px;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: all 0.15s ease;
}

.thread-search-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.thread-search-input::placeholder {
  color: var(--color-text-muted);
}

.thread-search-clear {
  position: absolute;
  right: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.thread-search-clear:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* Thread item hidden by search */
.thread-item.search-hidden {
  display: none !important;
}

/* No results message */
.thread-search-no-results {
  padding: var(--spacing-4);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13px;
}

.thread-list {
  flex: 1;
  overflow-y: auto;
}

.thread-item {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-subtle);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.thread-item:hover {
  background-color: var(--color-bg-secondary);
}

.thread-item.active {
  background-color: var(--color-primary-100);
  border-left: 4px solid var(--color-primary-600);
  box-shadow: inset 0 0 0 1px var(--color-primary-200);
  position: relative;
}

.thread-item.active::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 3px;
  background-color: var(--color-primary-600);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.thread-item.active .thread-title {
  color: var(--color-primary-700);
  font-weight: var(--font-weight-semibold);
}

.thread-title {
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.thread-preview {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.thread-badge {
  display: inline-block;
  background-color: var(--color-primary-600);
  color: white;
  font-size: var(--text-xs);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-left: var(--spacing-2);
}

/* ==========================================================================
   Main Chat Area
   ========================================================================== */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-primary);
  min-width: 0;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-default);
  background-color: var(--color-bg-primary);
  min-height: var(--chat-header-height);
}

.chat-header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.chat-header-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* Mobile header toggle buttons */
.chat-header__toggle {
  display: none; /* Hidden on desktop */
  padding: var(--spacing-2);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  min-width: 44px;
  min-height: 44px;
}

.chat-header__toggle:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* ==========================================================================
   Message List
   ========================================================================== */
.message-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-6);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.message {
  display: flex;
  gap: var(--spacing-3);
  max-width: 80%;
}

.message-own {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-500);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
}

.message-content {
  flex: 1;
  min-width: 0;
}

.message-header {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-1);
}

.message-author {
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.message-time {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.message-bubble {
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-lg);
  background-color: var(--color-gray-100);
  word-wrap: break-word;
  line-height: var(--leading-relaxed);
  position: relative;
}

.message-own .message-bubble {
  background-color: var(--color-primary-600);
  color: white;
}

.message-bubble.message-pending {
  opacity: 0.6;
}

.message-bubble.message-pending::after {
  content: '...';
  position: absolute;
  right: 8px;
  bottom: 4px;
  font-size: var(--text-xs);
  animation: pulse 1.5s infinite;
}

.message-bubble.message-queued {
  opacity: 0.7;
  border: 1px dashed var(--color-warning-500);
}

.message-bubble.message-queued::after {
  content: 'Queued';
  position: absolute;
  right: 8px;
  bottom: 4px;
  font-size: var(--text-xs);
  color: var(--color-warning-700);
}

.message-edited {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  font-style: italic;
  margin-top: var(--spacing-1);
}

/* ==========================================================================
   Message Reactions
   ========================================================================== */
.message-reactions {
  display: flex;
  gap: var(--spacing-1);
  margin-top: var(--spacing-2);
  flex-wrap: wrap;
}

.reaction {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 24px; /* WCAG touch target */
}

.reaction:hover {
  background-color: var(--color-gray-200);
  transform: scale(1.05);
}

.reaction.active {
  background-color: var(--color-primary-100);
  border-color: var(--color-primary-600);
}

/* ==========================================================================
   Typing Indicator
   ========================================================================== */
.typing-indicator {
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-style: italic;
  min-height: 2rem;
  display: flex;
  align-items: center;
}

.typing-dots {
  display: inline-flex;
  gap: 4px;
  margin-left: 4px;
}

.typing-dots span {
  width: 6px;
  height: 6px;
  background-color: var(--color-text-tertiary);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

.typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-4px); }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .typing-dots span {
    animation: none;
    opacity: 0.6;
  }
}

/* ==========================================================================
   Message Input
   ========================================================================== */
.message-input-container {
  padding: var(--spacing-3) var(--spacing-4);
  border-top: 1px solid var(--color-border-default);
  background-color: var(--color-bg-primary);
}

.message-input-wrapper {
  display: flex;
  gap: var(--spacing-2);
  align-items: flex-end;
  position: relative;
}

.message-input {
  flex: 1;
  min-height: var(--chat-input-min-height);
  max-height: var(--chat-input-max-height);
  padding: var(--spacing-3) var(--spacing-4);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  resize: none;
  transition: border-color var(--transition-fast);
}

.message-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Expandable Actions Toggle (+ button) */
.input-actions-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.input-actions-toggle:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.input-actions-toggle[aria-expanded="true"] {
  background-color: var(--color-primary-100);
  color: var(--color-primary-600);
  border-color: var(--color-primary-300);
}

.input-actions-toggle .plus-icon {
  transition: transform var(--transition-fast);
}

.input-actions-toggle[aria-expanded="true"] .plus-icon {
  transform: rotate(45deg);
}

/* Expandable Actions Menu */
.input-actions-menu {
  display: none;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  animation: slideInLeft 0.15s ease-out;
}

.input-actions-menu.expanded {
  display: flex;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.input-actions-menu .btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.input-actions-menu .btn-icon:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.input-actions-menu .btn-icon:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.input-actions-menu .voice-recorder-slot {
  display: flex;
  align-items: center;
}

/* Send button styling */
.btn-icon-only {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.btn-icon-only svg {
  width: 20px;
  height: 20px;
}

/* Input action buttons (legacy support) */
.message-input-actions {
  display: flex;
  gap: var(--spacing-1);
}

.input-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.input-action-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.input-action-btn svg {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   User Sidebar (Context Panel)
   ========================================================================== */
.user-sidebar {
  width: var(--chat-context-width);
  background-color: var(--color-bg-primary);
  border-left: 1px solid var(--color-border-default);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-sidebar-header {
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-default);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-2);
}

.user-sidebar-title {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.user-count {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: 4px;
}

.user-list {
  flex: 1;
  overflow-y: auto;
}

.user-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  transition: background-color var(--transition-fast);
  position: relative;
}

.user-item:hover {
  background-color: var(--color-bg-secondary);
}

.user-item:hover .dm-icon,
.user-item:hover .video-call-icon {
  opacity: 1;
}

.dm-icon,
.video-call-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}

.dm-icon {
  right: var(--spacing-3);
  background-color: var(--color-primary-600);
}

.video-call-icon {
  right: calc(var(--spacing-3) + 32px);
  background-color: var(--color-success-600);
}

.dm-icon:hover {
  background-color: var(--color-primary-700);
}

.video-call-icon:hover {
  background-color: var(--color-success-700);
}

.dm-icon svg,
.video-call-icon svg {
  width: 16px;
  height: 16px;
}

.user-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  background-color: var(--color-secondary-500);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  flex-shrink: 0;
  position: relative;
}

.user-avatar-img {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.user-avatar-fallback {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.presence-dot {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--color-bg-primary);
}

.presence-online {
  background-color: var(--color-success-500);
}

.presence-away {
  background-color: var(--color-warning-500);
}

.presence-offline {
  background-color: var(--color-gray-400);
}

.user-name {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.user-you {
  color: var(--color-text-secondary);
  font-size: var(--text-xs);
}

/* ==========================================================================
   System Messages & Empty States
   ========================================================================== */
.system-message {
  text-align: center;
  padding: var(--spacing-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: var(--spacing-8);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-4);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.empty-state-text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

.empty-state-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-4);
}

.empty-state-content svg {
  color: var(--color-text-tertiary);
  opacity: 0.6;
}

.empty-state-content p {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  max-width: 280px;
}

/* ==========================================================================
   Connection Status
   ========================================================================== */
.connection-status {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
}

.connection-status.connected {
  background-color: var(--color-success-50);
  color: var(--color-success-700);
}

.connection-status.disconnected {
  background-color: var(--color-error-50);
  color: var(--color-error-700);
}

.connection-status.connecting {
  background-color: var(--color-warning-50);
  color: var(--color-warning-700);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-dot.connected {
  background-color: var(--color-success-500);
}

.status-dot.disconnected {
  background-color: var(--color-error-500);
}

.status-dot.connecting {
  background-color: var(--color-warning-500);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ==========================================================================
   File Attachments
   ========================================================================== */
.message-attachment {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-2);
  max-width: 300px;
}

.message-own .message-attachment {
  background-color: rgba(255, 255, 255, 0.15);
}

.attachment-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}

.message-own .attachment-icon {
  background-color: rgba(255, 255, 255, 0.2);
}

.attachment-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-gray-600);
}

.message-own .attachment-icon svg {
  color: white;
}

.attachment-info {
  flex: 1;
  min-width: 0;
}

.attachment-name {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.attachment-size {
  font-size: var(--text-xs);
  opacity: 0.7;
}

.attachment-preview {
  width: 100%;
  max-width: 300px;
  border-radius: var(--radius-md);
  margin-top: var(--spacing-2);
  cursor: pointer;
}

.attachment-download {
  flex-shrink: 0;
  padding: var(--spacing-1);
  border-radius: var(--radius-sm);
  color: inherit;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.attachment-download:hover {
  opacity: 1;
}

/* File upload preview */
.file-upload-preview {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  padding: var(--spacing-2);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-2);
}

.file-preview-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.file-preview-remove {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-error-500);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  line-height: 1;
}

/* ==========================================================================
   Scrollbar Styling
   ========================================================================== */
.message-list::-webkit-scrollbar,
.thread-list::-webkit-scrollbar,
.user-list::-webkit-scrollbar {
  width: 8px;
}

.message-list::-webkit-scrollbar-track,
.thread-list::-webkit-scrollbar-track,
.user-list::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

.message-list::-webkit-scrollbar-thumb,
.thread-list::-webkit-scrollbar-thumb,
.user-list::-webkit-scrollbar-thumb {
  background: var(--color-gray-300);
  border-radius: var(--radius-full);
}

.message-list::-webkit-scrollbar-thumb:hover,
.thread-list::-webkit-scrollbar-thumb:hover,
.user-list::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Mobile (default - mobile first) */
@media (max-width: 767px) {
  .chat-layout {
    height: calc(100vh - 3.5rem);
    position: relative;
    overflow: hidden;
  }

  /* Position sidebars as overlapping panels for mobile */
  .thread-sidebar,
  .user-sidebar {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 85%;
    max-width: 320px;
    z-index: 20;
    visibility: hidden;
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.15);
  }

  .thread-sidebar {
    left: 0;
  }

  .user-sidebar {
    right: 0;
    width: 80%;
    max-width: 280px;
    box-shadow: -2px 0 12px rgba(0, 0, 0, 0.15);
  }

  /* Chat main takes full width on mobile */
  .chat-main {
    width: 100%;
    flex: none;
  }

  /* Show mobile header toggles */
  .chat-header__toggle {
    display: flex;
  }

  /* Show bottom tabs */
  .chat-bottom-tabs {
    display: flex;
  }

  .message {
    max-width: 90%;
  }

  /* Adjust message list for bottom tabs */
  .message-list {
    padding-bottom: calc(var(--spacing-6) + var(--chat-bottom-tabs-height));
  }
}

/* Tablet (768px+) */
@media (min-width: 768px) {
  .chat-layout {
    height: calc(100vh - 4rem);
  }

  /* Reset thread sidebar to inline flow */
  .thread-sidebar {
    position: static;
    visibility: visible;
    width: var(--chat-sidebar-width);
    max-width: none;
    box-shadow: none;
  }

  /* Chat main returns to flex */
  .chat-main {
    flex: 1;
    width: auto;
  }

  /* Hide bottom tabs on tablet+ */
  .chat-bottom-tabs {
    display: none;
  }

  /* Panels transition to fixed position */
  .chat-panel--left {
    position: relative;
    transform: none;
  }

  .chat-panel--center {
    position: relative;
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  /* Reset user sidebar to inline flow */
  .user-sidebar {
    position: static;
    visibility: visible;
    width: var(--chat-context-width);
    max-width: none;
    box-shadow: none;
  }

  /* Right panel fixed on desktop */
  .chat-panel--right {
    position: relative;
    transform: none;
  }

  .message {
    max-width: 70%;
  }
}

/* Large Desktop (1280px+) */
@media (min-width: 1280px) {
  .message {
    max-width: 60%;
  }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

/* Focus visible for keyboard navigation */
.thread-item:focus-visible,
.user-item:focus-visible,
.message:focus-visible,
.chat-tab:focus-visible,
.input-action-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Skip link styling */
.skip-to-chat {
  position: absolute;
  left: -9999px;
  z-index: 100;
}

.skip-to-chat:focus {
  left: var(--spacing-4);
  top: var(--spacing-4);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: var(--color-primary-600);
  color: white;
  border-radius: var(--radius-md);
  text-decoration: none;
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Message Actions Menu (Context/Long-press menu)
   ========================================================================== */
.message-actions-menu {
  position: fixed;
  z-index: 1000;
  min-width: 180px;
  max-width: 240px;
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 1px var(--color-border-default);
  padding: var(--spacing-1) 0;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.95);
  transform-origin: top left;
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
}

.message-actions-menu.visible {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.message-action-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  background: none;
  border: none;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  text-align: left;
}

.message-action-item:hover,
.message-action-item:focus {
  background-color: var(--color-bg-secondary);
  outline: none;
}

.message-action-item:focus-visible {
  box-shadow: inset 0 0 0 2px var(--color-primary-500);
}

.message-action-item svg {
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.message-action-item:hover svg,
.message-action-item:focus svg {
  color: var(--color-text-primary);
}

.message-action-item.message-action-danger {
  color: var(--color-error-600);
}

.message-action-item.message-action-danger svg {
  color: var(--color-error-600);
}

.message-action-divider {
  height: 1px;
  background-color: var(--color-border-default);
  margin: var(--spacing-1) 0;
}

/* ==========================================================================
   Message Translation
   ========================================================================== */
.message-translate-btn {
  position: absolute;
  bottom: var(--spacing-2);
  right: var(--spacing-2);
  padding: var(--spacing-1);
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), color var(--transition-fast);
  border-radius: var(--radius-sm);
}

.message-bubble:hover .message-translate-btn,
.message-bubble:focus-within .message-translate-btn {
  opacity: 1;
}

.message-translate-btn:hover,
.message-translate-btn:focus {
  color: var(--color-primary-600);
  background-color: var(--color-bg-secondary);
}

.message-translate-btn.translated {
  opacity: 1;
  color: var(--color-success-600);
}

.message-translation {
  margin-top: var(--spacing-2);
  padding: var(--spacing-2);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary-500);
  font-size: var(--text-sm);
}

.message-own .message-translation {
  background-color: rgba(255, 255, 255, 0.1);
  border-left-color: rgba(255, 255, 255, 0.5);
}

.translation-label {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-1);
}

.translation-text {
  display: block;
}

/* ==========================================================================
   Message Delivery Status
   ========================================================================== */
.delivery-status {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-left: var(--spacing-1);
}

.message-own .delivery-status {
  color: rgba(255, 255, 255, 0.7);
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .message-bubble {
    border: 1px solid currentColor;
  }

  .reaction {
    border-width: 2px;
  }

  .message-actions-menu {
    border: 2px solid var(--color-border-default);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .chat-panel {
    transition: none;
  }

  .status-dot.connecting {
    animation: none;
  }

  .message-bubble.message-pending::after {
    animation: none;
  }
}

/* ==========================================================================
   Chat Poll Component
   ========================================================================== */
.chat-poll {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
  margin: var(--spacing-2) 0;
  max-width: 400px;
}

.chat-poll-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.chat-poll-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-primary-100);
  color: var(--color-primary-600);
  border-radius: var(--radius-md);
}

.chat-poll-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.chat-poll-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary-600);
}

.chat-poll-author {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.chat-poll-menu-btn {
  padding: var(--spacing-1);
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.chat-poll-menu-btn:hover {
  background-color: var(--color-bg-tertiary);
}

.chat-poll-question {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-3) 0;
}

.chat-poll-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.chat-poll-option {
  position: relative;
  padding: var(--spacing-3);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.chat-poll-option:hover:not(.disabled) {
  border-color: var(--color-primary-400);
}

.chat-poll-option.selected {
  border-color: var(--color-primary-500);
  background-color: var(--color-primary-50);
}

.chat-poll-option.voted {
  border-color: var(--color-success-500);
}

.chat-poll-option.disabled {
  cursor: default;
}

.chat-poll-option-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  position: relative;
  z-index: 1;
}

.chat-poll-option-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.chat-poll-radio {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border-default);
  border-radius: 50%;
  transition: border-color var(--transition-fast);
}

.chat-poll-radio.checked {
  border-color: var(--color-primary-500);
  background-color: var(--color-primary-500);
  box-shadow: inset 0 0 0 3px var(--color-bg-primary);
}

.chat-poll-option-text {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.chat-poll-option-percent {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  min-width: 40px;
  text-align: right;
}

.chat-poll-option-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background-color: var(--color-bg-tertiary);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  overflow: hidden;
}

.chat-poll-option-fill {
  height: 100%;
  background-color: var(--color-primary-400);
  transition: width var(--transition-normal);
}

.chat-poll-option-fill.user-vote {
  background-color: var(--color-success-500);
}

.chat-poll-option-count {
  position: absolute;
  right: var(--spacing-3);
  bottom: var(--spacing-2);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.chat-poll-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--spacing-3);
  padding-top: var(--spacing-3);
  border-top: 1px solid var(--color-border-default);
}

.chat-poll-votes {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.chat-poll-actions {
  display: flex;
  gap: var(--spacing-2);
}

.chat-poll-vote-btn,
.chat-poll-results-btn {
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.chat-poll-vote-btn {
  background-color: var(--color-primary-600);
  color: white;
  border: none;
}

.chat-poll-vote-btn:hover:not(:disabled) {
  background-color: var(--color-primary-700);
}

.chat-poll-vote-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chat-poll-results-btn {
  background: none;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
}

.chat-poll-results-btn:hover {
  background-color: var(--color-bg-tertiary);
}

/* ==========================================================================
   Create Poll Modal
   ========================================================================== */
.create-poll-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.create-poll-modal.visible {
  opacity: 1;
  visibility: visible;
}

.create-poll-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
}

.create-poll-content {
  position: relative;
  width: 90%;
  max-width: 480px;
  max-height: 90vh;
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.create-poll-modal.visible .create-poll-content {
  transform: scale(1);
}

.create-poll-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-default);
}

.create-poll-header h2 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

.create-poll-close {
  padding: var(--spacing-1);
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.create-poll-close:hover {
  background-color: var(--color-bg-secondary);
}

.create-poll-form {
  padding: var(--spacing-4);
}

.create-poll-field {
  margin-bottom: var(--spacing-4);
}

.create-poll-field > label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2);
}

.poll-question-input,
.poll-option-input,
.poll-duration-select {
  width: 100%;
  padding: var(--spacing-3);
  font-size: var(--text-base);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

.poll-question-input:focus,
.poll-option-input:focus,
.poll-duration-select:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.poll-char-count {
  display: block;
  text-align: right;
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-1);
}

.poll-options-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-2);
}

.poll-option-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.poll-option-number {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  width: 20px;
}

.poll-option-row .poll-option-input {
  flex: 1;
}

.poll-remove-option {
  padding: var(--spacing-1);
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.poll-remove-option:hover {
  color: var(--color-error-600);
}

.poll-add-option-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-2);
  font-size: var(--text-sm);
  color: var(--color-primary-600);
  background: none;
  border: 1px dashed var(--color-border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.poll-add-option-btn:hover:not(:disabled) {
  border-color: var(--color-primary-400);
  background-color: var(--color-primary-50);
}

.poll-add-option-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.poll-settings {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.poll-setting-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  cursor: pointer;
}

.poll-setting-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary-600);
}

.poll-duration-select {
  max-width: 200px;
}

.create-poll-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-3);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border-default);
}

.poll-cancel-btn,
.poll-submit-btn {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.poll-cancel-btn {
  background: none;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
}

.poll-cancel-btn:hover {
  background-color: var(--color-bg-secondary);
}

.poll-submit-btn {
  background-color: var(--color-primary-600);
  color: white;
  border: none;
}

.poll-submit-btn:hover:not(:disabled) {
  background-color: var(--color-primary-700);
}

.poll-submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Mobile adjustments for poll modal */
@media (max-width: 480px) {
  .create-poll-content {
    width: 100%;
    height: 100%;
    max-height: 100%;
    border-radius: 0;
  }

  .create-poll-actions {
    flex-direction: column;
  }

  .poll-cancel-btn,
  .poll-submit-btn {
    width: 100%;
    padding: var(--spacing-3);
  }
}

/* ==========================================================================
   Translation Inline Button
   ========================================================================== */
.translation-inline-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-1);
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.translation-inline-btn:hover {
  color: var(--color-primary-600);
  background-color: var(--color-bg-secondary);
}

.translation-inline-btn.translated {
  color: var(--color-success-600);
}

.translation-inline-btn.loading {
  pointer-events: none;
}

.translation-inline-btn .translation-spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   Voice Stack (Whisper Stack)
   ========================================================================== */
.voice-stack {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-3);
  margin: var(--spacing-2) 0;
  max-width: 400px;
}

.voice-stack-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  cursor: pointer;
  padding-bottom: var(--spacing-2);
}

.voice-stack-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-primary-100);
  color: var(--color-primary-600);
  border-radius: 50%;
  flex-shrink: 0;
}

.voice-stack-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.voice-stack-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.voice-stack-info {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.voice-stack-expand-btn {
  padding: var(--spacing-1);
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast);
}

.voice-stack-expand-btn.expanded {
  transform: rotate(180deg);
}

.voice-stack-expand-btn:hover {
  background-color: var(--color-bg-tertiary);
}

.voice-stack-messages {
  display: none;
  flex-direction: column;
  gap: var(--spacing-1);
  padding: var(--spacing-2) 0;
  border-top: 1px solid var(--color-border-default);
  margin-top: var(--spacing-2);
}

.voice-stack-messages.expanded {
  display: flex;
}

.voice-stack-message {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-1) 0;
  position: relative;
}

.voice-stack-message.playing {
  background-color: var(--color-primary-50);
  border-radius: var(--radius-sm);
  padding: var(--spacing-1) var(--spacing-2);
  margin: 0 calc(-1 * var(--spacing-2));
}

.voice-stack-connector {
  font-family: monospace;
  color: var(--color-text-tertiary);
  width: 16px;
  flex-shrink: 0;
}

.voice-stack-message-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  flex: 1;
}

.voice-stack-sender {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
}

.voice-stack-duration {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.voice-stack-message-play {
  padding: var(--spacing-1);
  background: none;
  border: none;
  color: var(--color-primary-600);
  cursor: pointer;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.voice-stack-message:hover .voice-stack-message-play {
  opacity: 1;
}

.voice-stack-message-play:hover {
  background-color: var(--color-primary-100);
}

.voice-stack-progress {
  position: absolute;
  bottom: 0;
  left: 24px;
  right: 0;
  height: 2px;
  background-color: var(--color-bg-tertiary);
  border-radius: 1px;
  overflow: hidden;
}

.voice-stack-progress-bar {
  height: 100%;
  width: 0;
  background-color: var(--color-primary-500);
  transition: width 0.1s linear;
}

.voice-stack-actions {
  display: flex;
  gap: var(--spacing-2);
  padding-top: var(--spacing-2);
  border-top: 1px solid var(--color-border-default);
  margin-top: var(--spacing-2);
}

.voice-stack-play-all,
.voice-stack-summary,
.voice-stack-reply {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.voice-stack-play-all {
  background-color: var(--color-primary-600);
  color: white;
  border: none;
}

.voice-stack-play-all:hover {
  background-color: var(--color-primary-700);
}

.voice-stack-play-all.playing {
  background-color: var(--color-error-600);
}

.voice-stack-play-all.playing:hover {
  background-color: var(--color-error-700);
}

.voice-stack-summary,
.voice-stack-reply {
  background: none;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
}

.voice-stack-summary:hover,
.voice-stack-reply:hover {
  background-color: var(--color-bg-tertiary);
}

/* ========================================
   EMOJI PICKER
   ======================================== */

.emoji-picker {
  position: fixed;
  z-index: 10000;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  padding: 8px;
  min-width: 280px;
  max-width: 320px;
  animation: emoji-picker-in 0.15s ease-out;
}

@keyframes emoji-picker-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.emoji-picker-quick {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-default);
}

.emoji-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 1.4rem;
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.emoji-btn:hover {
  background-color: var(--color-bg-secondary);
  transform: scale(1.15);
}

.emoji-btn:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-primary-500);
}

.emoji-btn:active {
  transform: scale(0.95);
}

.emoji-picker-more {
  display: block;
  width: 100%;
  padding: 8px;
  margin-top: 4px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  cursor: pointer;
  border-radius: 6px;
  transition: background-color 0.15s ease;
}

.emoji-picker-more:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.emoji-picker-expanded {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border-default);
}

.emoji-picker-section {
  margin-bottom: 12px;
}

.emoji-picker-section:last-child {
  margin-bottom: 0;
}

.emoji-picker-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  padding-left: 4px;
}

.emoji-picker-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
}

/* Mobile adjustments */
@media (max-width: 480px) {
  .emoji-picker {
    min-width: 260px;
    max-width: calc(100vw - 20px);
  }

  .emoji-picker-quick,
  .emoji-picker-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .emoji-btn {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  .emoji-picker {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  }
}

/* ========================================
   MESSAGE SEARCH
   ======================================== */

.message-search-panel {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  max-width: 100vw;
  height: 100vh;
  background: var(--color-bg-primary);
  border-left: 1px solid var(--color-border-default);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  transition: right 0.2s ease-out;
}

.message-search-panel.open {
  right: 0;
}

.message-search-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid var(--color-border-default);
  background: var(--color-bg-secondary);
}

.message-search-input-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: 8px;
  padding: 8px 12px;
  transition: border-color 0.15s ease;
}

.message-search-input-wrapper:focus-within {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
}

.message-search-icon {
  color: var(--color-text-tertiary);
  flex-shrink: 0;
}

.message-search-input {
  flex: 1;
  border: none;
  background: none;
  font-size: var(--text-base);
  color: var(--color-text-primary);
  outline: none;
}

.message-search-input::placeholder {
  color: var(--color-text-tertiary);
}

.message-search-clear {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.15s ease;
}

.message-search-clear:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.message-search-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.15s ease;
}

.message-search-close:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.message-search-results {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.message-search-empty,
.message-search-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
  color: var(--color-text-tertiary);
  text-align: center;
  padding: 20px;
}

.message-search-error {
  color: var(--color-error-600);
}

.message-search-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border-default);
  border-top-color: var(--color-primary-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 12px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.message-search-result {
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease;
  margin-bottom: 4px;
}

.message-search-result:hover,
.message-search-result.selected {
  background: var(--color-bg-secondary);
}

.message-search-result:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-primary-500);
}

.message-search-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.message-search-result-author {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.message-search-result-time {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.message-search-result-content {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.message-search-result-content mark {
  background: var(--color-warning-200);
  color: var(--color-text-primary);
  padding: 0 2px;
  border-radius: 2px;
}

/* Search button in header */
.chat-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.15s ease;
}

.chat-search-btn:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* Mobile: full-width panel */
@media (max-width: 480px) {
  .message-search-panel {
    width: 100vw;
    right: -100vw;
  }
}

/* Message highlight when navigating from search */
.message-highlight {
  animation: message-highlight 2s ease-out;
}

@keyframes message-highlight {
  0% {
    background-color: var(--color-warning-100);
    box-shadow: 0 0 0 4px var(--color-warning-200);
  }
  100% {
    background-color: transparent;
    box-shadow: none;
  }
}

/* ==========================================================================
   Reply Preview (above input when replying to a message)
   ========================================================================== */
.reply-preview {
  display: flex;
  align-items: stretch;
  gap: var(--spacing-3);
  padding: var(--spacing-3);
  margin-bottom: var(--spacing-2);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-default);
}

.reply-preview-indicator {
  width: 4px;
  background-color: var(--color-primary-500);
  border-radius: 2px;
  flex-shrink: 0;
}

.reply-preview-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.reply-preview-author {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.reply-preview-author strong {
  color: var(--color-primary-600);
}

.reply-preview-text {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reply-preview-cancel {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  flex-shrink: 0;
  align-self: center;
}

.reply-preview-cancel:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

/* ==========================================================================
   Quoted Reply (displayed in message bubbles)
   ========================================================================== */
.quoted-reply {
  display: flex;
  align-items: stretch;
  gap: var(--spacing-2);
  padding: var(--spacing-2);
  margin-bottom: var(--spacing-2);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s ease;
  font-size: var(--text-sm);
  max-width: 100%;
  overflow: hidden;
}

.quoted-reply:hover {
  background-color: var(--color-bg-secondary);
}

.quoted-reply-indicator {
  width: 3px;
  background-color: var(--color-primary-400);
  border-radius: 1.5px;
  flex-shrink: 0;
}

.quoted-reply-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.quoted-reply-author {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary-600);
}

.quoted-reply-text {
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.quoted-reply-minimal {
  opacity: 0.7;
}

.quoted-reply-minimal .quoted-reply-indicator {
  background-color: var(--color-text-tertiary);
}

/* Own message quoted reply styling */
.message-own .quoted-reply {
  background-color: rgba(255, 255, 255, 0.15);
}

.message-own .quoted-reply:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

.message-own .quoted-reply-indicator {
  background-color: rgba(255, 255, 255, 0.6);
}

.message-own .quoted-reply-author {
  color: rgba(255, 255, 255, 0.9);
}

.message-own .quoted-reply-text {
  color: rgba(255, 255, 255, 0.8);
}

/* Mobile adjustments */
@media (max-width: 480px) {
  .reply-preview {
    padding: var(--spacing-2);
  }

  .quoted-reply {
    padding: var(--spacing-1) var(--spacing-2);
  }
}

/* ==========================================================================
   Report Message Dialog
   ========================================================================== */
.report-dialog-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
  animation: fade-in 0.15s ease-out;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.report-dialog {
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 400px;
  max-height: 90vh;
  overflow-y: auto;
  animation: scale-in 0.15s ease-out;
}

@keyframes scale-in {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.report-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-default);
}

.report-dialog-header h3 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

.report-dialog-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.report-dialog-close:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.report-dialog-content {
  padding: var(--spacing-4);
}

.report-dialog-content p {
  margin: 0 0 var(--spacing-3) 0;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.report-reasons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.report-reason {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.report-reason:hover {
  background-color: var(--color-bg-tertiary);
}

.report-reason input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary-600);
  cursor: pointer;
}

.report-reason span {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.report-other-container {
  margin-top: var(--spacing-3);
}

.report-other-input {
  width: 100%;
  padding: var(--spacing-3);
  font-size: var(--text-sm);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  resize: vertical;
  transition: border-color 0.15s ease;
}

.report-other-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.report-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-3);
  padding: var(--spacing-4);
  border-top: 1px solid var(--color-border-default);
}

.report-cancel-btn,
.report-submit-btn {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
}

.report-cancel-btn {
  background: none;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
}

.report-cancel-btn:hover {
  background-color: var(--color-bg-secondary);
}

.report-submit-btn {
  background-color: var(--color-error-600);
  border: none;
  color: white;
}

.report-submit-btn:hover {
  background-color: var(--color-error-700);
}

/* Mobile adjustments for report dialog */
@media (max-width: 480px) {
  .report-dialog {
    max-width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 80vh;
  }

  .report-dialog-actions {
    flex-direction: column;
  }

  .report-cancel-btn,
  .report-submit-btn {
    width: 100%;
    padding: var(--spacing-3);
  }
}

/* ==========================================================================
   Pinned Messages Panel
   ========================================================================== */
.pinned-messages-panel {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-default);
}

.pinned-messages-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  width: 100%;
  padding: var(--spacing-2) var(--spacing-4);
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-fast);
}

.pinned-messages-toggle:hover {
  background-color: var(--color-bg-tertiary);
}

.pinned-messages-toggle:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.pinned-messages-toggle .pin-icon {
  color: var(--color-warning-500);
}

.pinned-messages-toggle .pinned-count {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.pinned-messages-toggle .chevron-icon {
  margin-left: auto;
  transition: transform var(--transition-fast);
}

.pinned-messages-toggle[aria-expanded="true"] .chevron-icon {
  transform: rotate(180deg);
}

.pinned-messages-list {
  display: none;
  max-height: 200px;
  overflow-y: auto;
  padding: var(--spacing-2) var(--spacing-4);
}

.pinned-messages-list.expanded {
  display: block;
}

.pinned-empty {
  padding: var(--spacing-4);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
}

.pinned-message-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  padding: var(--spacing-2) var(--spacing-3);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-2);
  border: 1px solid var(--color-border-default);
}

.pinned-message-item:last-child {
  margin-bottom: 0;
}

.pinned-message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
}

.pinned-author {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.pinned-time {
  color: var(--color-text-tertiary);
}

.pinned-message-content {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pinned-message-actions {
  display: flex;
  gap: var(--spacing-1);
  justify-content: flex-end;
  margin-top: var(--spacing-1);
}

.pinned-message-actions .btn-xs {
  padding: var(--spacing-1);
  font-size: var(--text-xs);
}

.pinned-message-actions .btn-xs:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 1px;
}

/* Pin indicator on messages */
.pin-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--text-xs);
  color: var(--color-warning-600);
  background-color: var(--color-warning-50);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-2);
}

.message-pinned {
  border-left: 3px solid var(--color-warning-500);
}

/* Message highlight animation */
.message-highlight {
  animation: highlightPulse 2s ease-out;
}

@keyframes highlightPulse {
  0% {
    background-color: var(--color-warning-100);
  }
  100% {
    background-color: transparent;
  }
}

/* ==========================================================================
   Mobile Message Input Fix
   ========================================================================== */
@media (max-width: 767px) {
  /* Ensure message input takes full available width on mobile */
  .message-input-container {
    padding: var(--spacing-2) var(--spacing-3);
  }

  .message-input-wrapper {
    flex-wrap: nowrap;
    gap: var(--spacing-2);
  }

  .message-input {
    flex: 1 1 0%;
    min-width: 0; /* Prevents flex item from overflowing */
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--text-base);
  }

  /* Expandable actions on mobile */
  .input-actions-toggle {
    width: 36px;
    height: 36px;
  }

  .input-actions-menu {
    padding: var(--spacing-1);
  }

  .input-actions-menu .btn-icon {
    width: 32px;
    height: 32px;
  }

  /* Send button mobile size */
  .btn-icon-only {
    width: 36px;
    height: 36px;
  }

  /* Legacy buttons styling */
  .message-input-wrapper .btn {
    flex-shrink: 0;
    width: 40px;
    min-width: 40px;
    height: 40px;
    padding: 0;
  }

  .message-input-wrapper .btn-ghost {
    width: 36px;
    min-width: 36px;
    height: 36px;
  }
}

/* Very small screens - collapse actions menu by default */
@media (max-width: 360px) {
  .input-actions-menu .btn-icon {
    width: 28px;
    height: 28px;
  }
}

/* Dark mode pinned messages */
@media (prefers-color-scheme: dark) {
  .pin-indicator {
    color: var(--color-warning-400);
    background-color: rgba(234, 179, 8, 0.1);
  }

  .message-highlight {
    animation: highlightPulseDark 2s ease-out;
  }

  @keyframes highlightPulseDark {
    0% {
      background-color: rgba(234, 179, 8, 0.2);
    }
    100% {
      background-color: transparent;
    }
  }
}