/* ============================================================
   PROFESSIONAL THEME SYSTEM - AEXO CHAT
   Dark Mode: Matches Login/Signup page aesthetic
   Light Mode: Clean white professional theme
   ============================================================ */

/* ============================================================
   LIGHT MODE (Default)
   ============================================================ */
:root {
  /* Primary Colors */
  --primary: #0891b2;
  --primary-light: #06b6d4;
  --primary-dark: #0e7490;
  --accent: #8b5cf6;
  
  /* Status Colors */
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  
  /* Text Colors */
  --text: #0f172a;
  --text-light: #64748b;
  --text-lighter: #94a3b8;
  
  /* Background Colors */
  --bg: #f8fafc;
  --surface: #ffffff;
  --hover: #f1f5f9;
  
  /* Border Colors */
  --border: #e2e8f0;
  --border-dark: #cbd5e1;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  
  /* Message Bubbles - Light Mode */
  --msg-own-bg: #ffffff;
  --msg-own-text: #1e293b;
  --msg-own-border: #e2e8f0;
  --msg-other-bg: #ffffff;
  --msg-other-text: #1e293b;
  --msg-other-border: #e2e8f0;
  
  /* Modal Overlay */
  --overlay-bg: rgba(0, 0, 0, 0.5);
}

/* ============================================================
   DARK MODE - Matches Login/Signup Theme
   ============================================================ */
[data-theme="dark"] {
  /* Primary Colors - Keep consistent */
  --primary: #0891b2;
  --primary-light: #06b6d4;
  --primary-dark: #0e7490;
  
  /* Text Colors - Light text for dark bg */
  --text: #f1f5f9;
  --text-light: #cbd5e1;
  --text-lighter: #94a3b8;
  
  /* Background Colors - Dark slate like login page */
  --bg: #0f172a;
  --surface: #1e293b;
  --hover: rgba(255, 255, 255, 0.05);
  
  /* Border Colors - Subtle light borders */
  --border: rgba(255, 255, 255, 0.1);
  --border-dark: rgba(255, 255, 255, 0.15);
  
  /* Shadows - Deeper for dark mode */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  
  /* Message Bubbles - Dark Mode (matching dark theme) */
  --msg-own-bg: #1e293b;
  --msg-own-text: #e2e8f0;
  --msg-own-border: #505459;
  --msg-other-bg: #1e293b;
  --msg-other-text: #e2e8f0;
  --msg-other-border: #505459;
  
  /* Modal Overlay */
  --overlay-bg: rgba(0, 0, 0, 0.7);
}

/* ============================================================
   GLOBAL DARK MODE OVERRIDES
   ============================================================ */

/* Body */
[data-theme="dark"] body {
  background: var(--bg);
  color: var(--text);
}

/* Main Container */
[data-theme="dark"] #main-container {
  background: var(--bg);
}

/* Left Sidebar */
[data-theme="dark"] #left-sidebar {
  background: var(--surface);
  border-color: var(--border);
}

/* Right Sidebar */
[data-theme="dark"] #right-sidebar {
  background: var(--surface);
  border-color: var(--border);
}

/* Chat Content Area */
[data-theme="dark"] #chat-content {
  background: var(--bg);
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */

/* Search Container */
[data-theme="dark"] .search-container {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .search-wrapper {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
}

[data-theme="dark"] .search-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.2);
}

[data-theme="dark"] #user-search {
  color: var(--text);
}

[data-theme="dark"] #user-search::placeholder {
  color: var(--text-lighter);
}

[data-theme="dark"] .search-icon {
  color: var(--text-lighter);
}

[data-theme="dark"] .search-clear {
  color: var(--text-light);
}

/* Menu Button in Search */
[data-theme="dark"] .search-container .header-icon-btn {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-color: var(--border);
}

[data-theme="dark"] .search-container .header-icon-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--primary-light);
}

/* ============================================================
   SEARCH RESULTS DROPDOWN
   ============================================================ */

/* Header action buttons (media/files toggle) */
.header-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border, #e2e8f0);
  background: var(--bg, #f8fafc);
  color: var(--text-light, #64748b);
  cursor: pointer;
  transition: all 0.2s;
}

.header-action-btn:hover {
  background: #e2e8f0;
  color: #1e293b;
}

.header-action-btn.active {
  background: var(--primary-light, #06b6d4) !important;
  color: white !important;
}

[data-theme="dark"] .header-action-btn {
  background: #1e293b;
  color: #94a3b8;
  border-color: #505459;
}

[data-theme="dark"] .header-action-btn:hover {
  background: #2d3748;
  color: #e2e8f0;
}

[data-theme="dark"] .header-action-btn.active {
  background: var(--primary-light, #06b6d4) !important;
  color: white !important;
}

/* Dark theme for message search button (override inline styles) */
[data-theme="dark"] #message-search-btn {
  background: #1e293b !important;
  color: #94a3b8 !important;
  border-color: #505459 !important;
}

[data-theme="dark"] #message-search-btn:hover {
  background: #2d3748 !important;
  color: #e2e8f0 !important;
}

/* Light mode - explicit styling */
#search-results,
.search-results {
  background: #ffffff !important;
  border-color: #e2e8f0 !important;
}

.search-result-item {
  background: #ffffff !important;
  border-color: #e2e8f0 !important;
  color: #1e293b !important;
}

.search-result-item:hover {
  background: #f1f5f9 !important;
}

/* Dark mode overrides */
[data-theme="dark"] #search-results,
[data-theme="dark"] .search-results {
  background: #1e293b !important;
  border-color: #505459 !important;
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .search-result-item {
  background: #1e293b !important;
  border-color: #505459 !important;
  color: #e2e8f0 !important;
}

[data-theme="dark"] .search-result-item:hover {
  background: #2d3a4d !important;
}

[data-theme="dark"] .search-result-item .avatar {
  background: var(--primary) !important;
  color: #ffffff !important;
}

[data-theme="dark"] .search-result-item .username,
[data-theme="dark"] .search-result-name {
  color: #f1f5f9 !important;
}

[data-theme="dark"] .search-result-item .email,
[data-theme="dark"] .search-result-username {
  color: #94a3b8 !important;
}

[data-theme="dark"] .search-result-item .user-details {
  color: #e2e8f0 !important;
}

/* Search empty - explicit light and dark mode */
.search-empty {
  background: #ffffff !important;
  color: #64748b !important;
}

[data-theme="dark"] .search-empty {
  color: #94a3b8 !important;
  background: #1e293b !important;
}

/* ============================================================
   SIDEBAR SECTIONS
   ============================================================ */

[data-theme="dark"] .section-header {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.05);
  color: var(--text-lighter);
}

[data-theme="dark"] .sidebar-section {
  border-color: var(--border);
}

/* ============================================================
   CHAT LIST ITEMS
   ============================================================ */

[data-theme="dark"] .chat-item {
  border-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .chat-item:hover {
  background: var(--hover);
}

[data-theme="dark"] .chat-item.active {
  background: rgba(8, 145, 178, 0.15);
  border-left-color: var(--primary);
}

[data-theme="dark"] .chat-name {
  color: var(--text);
}

[data-theme="dark"] .chat-preview {
  color: var(--text-lighter);
}

[data-theme="dark"] .chat-time {
  color: var(--text-lighter);
}

[data-theme="dark"] .chat-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .chat-list::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ============================================================
   CHAT HEADER
   ============================================================ */

[data-theme="dark"] .chat-header {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .chat-header-title {
  color: var(--text);
}

[data-theme="dark"] .chat-header-subtitle {
  color: var(--text-light);
}

[data-theme="dark"] .chat-header-btn {
  color: var(--text-light);
}

[data-theme="dark"] .chat-header-btn:hover {
  background: var(--hover);
  color: var(--text);
}

/* ============================================================
   MESSAGES - COMPREHENSIVE DARK MODE
   Eye-friendly dark message bubbles
   ============================================================ */

[data-theme="dark"] .messages-container {
  background: var(--bg);
}

[data-theme="dark"] .messages-container::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
}

/* Own messages - matching dark theme */
[data-theme="dark"] .message.own-message {
  background: #1e293b !important;
  color: #e2e8f0 !important;
  border: 1px solid #505459 !important;
}

[data-theme="dark"] .message.own-message .message-body {
  background: #1e293b !important;
  color: #e2e8f0 !important;
  border: 1px solid #505459 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .message.own-message .message-content {
  color: #e2e8f0 !important;
}

[data-theme="dark"] .message.own-message .message-time {
  color: #94a3b8 !important;
}

[data-theme="dark"] .message.own-message .message-meta {
  color: #94a3b8 !important;
}

/* Other messages - matching dark theme */
[data-theme="dark"] .message.other-message {
  background: #1e293b !important;
  color: #e2e8f0 !important;
  border: 1px solid #505459 !important;
}

[data-theme="dark"] .message.other-message .message-body {
  background: #1e293b !important;
  color: #e2e8f0 !important;
  border: 1px solid #505459 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .message.other-message .message-content {
  color: #e2e8f0 !important;
}

[data-theme="dark"] .message.other-message .message-time {
  color: #94a3b8 !important;
}

[data-theme="dark"] .message.other-message .message-meta {
  color: #94a3b8 !important;
}

/* Message sender name */
[data-theme="dark"] .message-sender {
  color: #67d4e4 !important;
}

/* Message content text - all variations */
[data-theme="dark"] .message-content {
  color: #e2e8f0 !important;
}

[data-theme="dark"] .message-body .message-content {
  color: #e2e8f0 !important;
}

/* Message time and meta */
[data-theme="dark"] .message-time {
  color: #94a3b8 !important;
}

[data-theme="dark"] .message-meta {
  color: #94a3b8 !important;
}

/* Tick marks */
[data-theme="dark"] .tick {
  color: #64748b;
}

[data-theme="dark"] .tick.read {
  color: #22d3ee;
}

/* Date divider */
[data-theme="dark"] .date-divider span {
  background: var(--surface);
  color: var(--text-lighter);
}

[data-theme="dark"] .date-divider::before {
  background: var(--border);
}

/* ============================================================
   MESSAGE INPUT AREA
   ============================================================ */

[data-theme="dark"] .message-input-area {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .input-wrapper {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
}

[data-theme="dark"] .input-wrapper:focus-within {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.2);
}

[data-theme="dark"] .message-input {
  color: var(--text);
}

[data-theme="dark"] .message-input::placeholder {
  color: var(--text-lighter);
}

[data-theme="dark"] .input-action-btn {
  color: var(--text-light);
}

[data-theme="dark"] .input-action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--primary-light);
}

/* ============================================================
   DROPDOWNS
   ============================================================ */

/* User Profile Dropdown */
[data-theme="dark"] .user-profile-dropdown {
  background: var(--surface);
  border-color: var(--border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .profile-dropdown-header {
  background: rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .profile-dropdown-name {
  color: var(--text);
}

[data-theme="dark"] .profile-dropdown-email {
  color: var(--text-light);
}

[data-theme="dark"] .profile-dropdown-divider {
  background: var(--border);
}

[data-theme="dark"] .profile-dropdown-item {
  color: var(--text);
}

[data-theme="dark"] .profile-dropdown-item:hover {
  background: var(--hover);
}

[data-theme="dark"] .profile-dropdown-item svg {
  color: var(--text-light);
}

/* Header Menu Dropdown */
[data-theme="dark"] .header-menu-dropdown {
  background: var(--surface);
  border-color: var(--border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .menu-item {
  color: var(--text);
}

[data-theme="dark"] .menu-item:hover {
  background: var(--hover);
}

/* ============================================================
   MODALS & OVERLAYS
   ============================================================ */

[data-theme="dark"] .profile-overlay {
  background: var(--overlay-bg);
}

[data-theme="dark"] .profile-modal {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .profile-close {
  color: var(--text-light);
}

[data-theme="dark"] .profile-close:hover {
  color: var(--text);
}

[data-theme="dark"] .profile-name {
  color: var(--text);
}

[data-theme="dark"] .profile-username {
  color: var(--text-light);
}

[data-theme="dark"] .profile-last-seen {
  color: var(--text-lighter);
}

[data-theme="dark"] .profile-btn {
  background: var(--primary);
  color: white;
}

/* Compose Modal */
[data-theme="dark"] .compose-overlay {
  background: var(--overlay-bg);
}

[data-theme="dark"] .compose-modal {
  background: var(--surface);
  border: 1px solid var(--border);
}

[data-theme="dark"] .compose-title {
  color: var(--text);
}

[data-theme="dark"] .compose-search input {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
  color: var(--text);
}

[data-theme="dark"] .compose-search input::placeholder {
  color: var(--text-lighter);
}

[data-theme="dark"] .compose-list-item {
  border-color: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

[data-theme="dark"] .compose-list-item:hover {
  background: var(--hover);
}

/* ============================================================
   FORM INPUTS (Global)
   ============================================================ */

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
  color: var(--text);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
  color: var(--text-lighter);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.2);
}

/* ============================================================
   SCROLLBARS (Global)
   ============================================================ */

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.02);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ============================================================
   EMPTY STATES
   ============================================================ */

[data-theme="dark"] .empty-state h3 {
  color: var(--text);
}

[data-theme="dark"] .empty-state p {
  color: var(--text-light);
}

[data-theme="dark"] .empty-state-icon {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-lighter);
}

/* ============================================================
   RIGHT SIDEBAR CONTENT
   ============================================================ */

[data-theme="dark"] .sidebar-info-title {
  color: var(--text);
}

[data-theme="dark"] .sidebar-info-value {
  color: var(--text-light);
}

[data-theme="dark"] .member-item {
  border-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .member-item:hover {
  background: var(--hover);
}

[data-theme="dark"] .member-name {
  color: var(--text);
}

[data-theme="dark"] .member-role {
  color: var(--text-lighter);
}

/* ============================================================
   THEME TOGGLE BUTTON STYLES
   ============================================================ */

.theme-toggle-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.theme-toggle-item:hover {
  background: var(--hover);
}

.theme-toggle-item .theme-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.theme-toggle-item .theme-icon svg {
  color: var(--text-light);
}

.theme-toggle-item .theme-text {
  flex: 1;
}

/* Profile Modal Theme Toggle */
.profile-theme-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.profile-theme-btn:hover {
  background: var(--hover);
  border-color: var(--primary);
}

.profile-theme-btn svg {
  width: 18px;
  height: 18px;
}

/* ============================================================
   MEETING ROOM DARK MODE
   ============================================================ */

[data-theme="dark"] .meeting-container {
  background: var(--bg);
}

[data-theme="dark"] .meeting-header {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .meeting-title {
  color: var(--text);
}

[data-theme="dark"] .meeting-controls button {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

[data-theme="dark"] .meeting-controls button:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ============================================================
   CONNECTION STATUS
   ============================================================ */

[data-theme="dark"] .connection-status {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-light);
}

[data-theme="dark"] .connection-status.online {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

[data-theme="dark"] .connection-status.offline {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error);
}

/* ============================================================
   FILE ATTACHMENTS
   ============================================================ */

[data-theme="dark"] .file-attachment a {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  border-color: var(--border);
}

[data-theme="dark"] .file-attachment a:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ============================================================
   TOOLTIPS
   ============================================================ */

[data-theme="dark"] [title]:hover::after {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

/* ============================================================
   CONTEXT MENUS
   ============================================================ */

[data-theme="dark"] .context-menu {
  background: var(--surface);
  border-color: var(--border);
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .context-menu-item {
  color: var(--text);
}

[data-theme="dark"] .context-menu-item:hover {
  background: var(--hover);
}

/* ============================================================
   REPLY PREVIEW
   ============================================================ */

[data-theme="dark"] .reply-preview {
  background: rgba(255, 255, 255, 0.05);
  border-left-color: var(--primary);
}

[data-theme="dark"] .reply-preview-text {
  color: var(--text-light);
}

[data-theme="dark"] .reply-preview-close {
  color: var(--text-lighter);
}

[data-theme="dark"] .reply-preview-close:hover {
  color: var(--text);
}

/* ============================================================
   BADGES & TAGS
   ============================================================ */

[data-theme="dark"] .unread-badge {
  background: var(--primary);
  color: white;
}

[data-theme="dark"] .typing-indicator {
  color: var(--text-lighter);
}

/* ============================================================
   RIGHT SIDEBAR - COMPREHENSIVE DARK MODE
   ============================================================ */

[data-theme="dark"] .sidebar-tabs {
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--border);
}

[data-theme="dark"] .sidebar-tab {
  color: var(--text-light);
}

[data-theme="dark"] .sidebar-tab:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .sidebar-tab.active {
  color: var(--primary-light);
}

[data-theme="dark"] .chat-info-section {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, var(--surface) 100%);
  border-color: var(--border);
}

[data-theme="dark"] .chat-info-name {
  color: var(--text) !important;
}

[data-theme="dark"] .chat-info-status {
  color: var(--text-light);
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .media-content,
[data-theme="dark"] .files-content {
  background: var(--surface);
}

[data-theme="dark"] .media-grid-item {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .media-grid-item:hover {
  border-color: var(--primary);
}

[data-theme="dark"] .media-empty,
[data-theme="dark"] .files-empty {
  color: var(--text-light);
}

[data-theme="dark"] .media-empty-icon,
[data-theme="dark"] .files-empty-icon {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-lighter);
}

[data-theme="dark"] .media-empty-title,
[data-theme="dark"] .files-empty-title {
  color: var(--text);
}

[data-theme="dark"] .media-empty-text,
[data-theme="dark"] .files-empty-text {
  color: var(--text-lighter);
}

/* Members List in Right Sidebar */
[data-theme="dark"] .members-section {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .members-header {
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--border);
}

[data-theme="dark"] .members-header-left {
  color: var(--text-light);
}

[data-theme="dark"] .members-count {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-light);
}

[data-theme="dark"] .member-item {
  border-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .member-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .member-avatar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

[data-theme="dark"] .member-name {
  color: var(--text) !important;
}

[data-theme="dark"] .member-role {
  color: var(--text-lighter);
}

[data-theme="dark"] .member-status-indicator {
  border-color: var(--surface);
}

/* Sidebar Section Headers */
[data-theme="dark"] .sidebar-section-header {
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--border);
}

[data-theme="dark"] .sidebar-section-header-left {
  color: var(--text);
}

[data-theme="dark"] .sidebar-section-close {
  color: var(--text-light);
}

[data-theme="dark"] .sidebar-section-close:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

/* Sidebar media/files sections */
[data-theme="dark"] .sidebar-media-section,
[data-theme="dark"] .sidebar-files-section {
  border-color: var(--border);
}

/* File items in sidebar */
[data-theme="dark"] .file-item {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .file-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--primary);
}

[data-theme="dark"] .file-name {
  color: var(--text);
}

[data-theme="dark"] .file-size {
  color: var(--text-lighter);
}

[data-theme="dark"] .file-download {
  border-color: var(--border);
  color: var(--text-light);
}

/* Mobile header for right sidebar */
[data-theme="dark"] .mobile-only-header {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .mobile-back-btn-sidebar {
  color: var(--text);
}

[data-theme="dark"] .sidebar-mobile-title {
  color: var(--text);
}

/* Mobile Chat Action Buttons (Info/Members buttons in chat header) */
[data-theme="dark"] .mobile-chat-action-btn {
  background: #1e293b !important;
  color: #94a3b8 !important;
  border: 1px solid #505459 !important;
}

[data-theme="dark"] .mobile-chat-action-btn:hover,
[data-theme="dark"] .mobile-chat-action-btn:active {
  background: #2d3748 !important;
  color: #e2e8f0 !important;
}

/* ============================================================
   MEETING CARDS IN MESSAGES
   ============================================================ */

[data-theme="dark"] .meeting-card {
  background: rgba(255, 255, 255, 0.05) !important;
  border-color: rgba(255, 255, 255, 0.1) !important;
}

[data-theme="dark"] .meeting-card-title {
  color: var(--text) !important;
}

[data-theme="dark"] .meeting-card-host {
  color: var(--text-light) !important;
}

[data-theme="dark"] .meeting-ended-btn {
  background: rgba(255, 255, 255, 0.1) !important;
  color: var(--text-light) !important;
}

/* ============================================================
   SPECIAL MESSAGE TYPES (SYSTEM MESSAGES)
   ============================================================ */

[data-theme="dark"] .system-message {
  color: var(--text-lighter);
}

[data-theme="dark"] .system-message-content {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--text-light);
}

/* ============================================================
   EMOJI & REACTIONS
   ============================================================ */

[data-theme="dark"] .emoji-picker {
  background: var(--surface);
  border-color: var(--border);
}

[data-theme="dark"] .reaction-badge {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
}

/* ============================================================
   ADDITIONAL UI ELEMENTS
   ============================================================ */

[data-theme="dark"] .chat-header-status {
  color: var(--text-light);
}

[data-theme="dark"] .new-message-badge {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-color: var(--primary-dark);
}

[data-theme="dark"] label {
  color: var(--text);
}

[data-theme="dark"] .send-btn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

/* Close buttons */
[data-theme="dark"] .profile-close,
[data-theme="dark"] #close-group-btn {
  color: var(--text-light);
}

[data-theme="dark"] .profile-close:hover,
[data-theme="dark"] #close-group-btn:hover {
  color: var(--text);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

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

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

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

@keyframes slideInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideOutUp {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-20px); }
}

/* ============================================================
   SCREEN SHARE STYLES
   ============================================================ */

.screen-share-tile {
  animation: fadeIn 0.3s ease;
}

.meeting-share-btn.sharing {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4); }
  50% { box-shadow: 0 0 0 10px rgba(37, 99, 235, 0); }
}