:root {
            --telegram-blue: #0088cc;
            --telegram-light-blue: #40a7e3;
            --dark-bg: #212d3b;
            --darker-bg: #17212b;
            --message-bg: #2b5278;
            --message-out-bg: #0088cc;
            --text-color: #ffffff;
            --text-secondary: #adb5bd;
            --border-color: #3e546a;
        }

        body {
            background-color: var(--dark-bg);
            color: var(--text-color);
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            overflow: hidden;
        }

        .main-container {
            height: 100vh;
            display: flex;
        }

        /* Sidebar */
        .sidebar {
            width: 400px;
            background-color: var(--darker-bg);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

        .sidebar-header {
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .search-box {
            background-color: var(--dark-bg);
            border: none;
            color: var(--text-color);
            border-radius: 25px;
            padding: 10px 20px;
            width: 100%;
        }

        .search-box:focus {
            background-color: var(--dark-bg);
            color: var(--text-color);
            box-shadow: 0 0 0 0.2rem rgba(0, 136, 204, 0.25);
        }

        .search-box::placeholder {
            color: var(--text-secondary);
        }

        .chat-list {
            flex: 1;
            overflow-y: auto;
            max-height: calc(100vh - 120px);
        }

        .chat-item {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
            transition: background-color 0.2s;
            display: flex;
            align-items: center;
        }

        .chat-item:hover {
            background-color: var(--dark-bg);
        }

        .chat-item.active {
            background-color: var(--telegram-blue);
        }

        .chat-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            margin-right: 15px;
            background-color: var(--telegram-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 18px;
        }

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

        .chat-name {
            font-weight: 600;
            margin-bottom: 2px;
            color: var(--text-color);
        }

        .chat-last-message {
            color: var(--text-secondary);
            font-size: 14px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .chat-meta {
            text-align: right;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .unread-count {
            background-color: var(--telegram-blue);
            color: white;
            border-radius: 10px;
            padding: 2px 8px;
            font-size: 11px;
            margin-top: 5px;
        }

        /* Chat Area */
        .chat-area {
            flex: 1;
            display: flex;
            flex-direction: column;
            background-color: var(--dark-bg);
            height: 100vh;
        }

        .chat-header {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--darker-bg);
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }

        .chat-header-info {
            flex: 1;
        }

        .chat-title {
            font-weight: 600;
            margin-bottom: 2px;
        }

        .chat-status {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .chat-status.online {
            color: #4CAF50;
        }

        .messages-container {
            flex: 1;
            overflow-y: auto;
            overflow-x: hidden;
            position: relative;
            padding: 20px;
            height: calc(100vh - 160px);
        }

        .messages-container.dragover {
            background-color: rgba(0, 136, 204, 0.1);
            border: 2px dashed var(--telegram-blue);
        }

        .messages-container.dragover::after {
            content: 'Drop files here to send';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: var(--telegram-blue);
            color: white;
            padding: 20px 40px;
            border-radius: 10px;
            font-weight: bold;
            z-index: 1000;
            pointer-events: none;
        }

        .messages-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .message-input-container {
            padding: 20px;
            border-top: 1px solid var(--border-color);
            background-color: var(--darker-bg);
            flex-shrink: 0;
            position: sticky;
            bottom: 0;
            z-index: 10;
        }

        .loading-indicator {
            text-align: center;
            padding: 20px;
            color: var(--text-secondary);
            display: none;
        }

        .loading-indicator.show {
            display: block;
        }

        .message {
            margin-bottom: 0;
            display: flex;
            max-width: 70%;
            align-items: flex-end;
        }

        .message.new-message {
            animation: fadeInMessage 0.3s ease-out;
        }


        @keyframes fadeInMessage {
            from {
                opacity: 0;
                transform: translateY(10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Fix message alignment - CORRECTED */
        .message.outgoing {
            align-self: flex-end;
            margin-left: auto;
            flex-direction: row; /* Avatar should be on RIGHT side */
        }

        .message.incoming {
            align-self: flex-start;
            flex-direction: row; /* Avatar on LEFT side */
        }


        .message-content {
            background-color: var(--message-bg);
            padding: 10px 15px;
            border-radius: 15px;
            position: relative;
            word-wrap: break-word;
            max-width: 100%;
            order: 1;
        }

        .message.outgoing .message-content {
            background-color: var(--message-out-bg);
            border-bottom-right-radius: 5px;
            margin-right: 10px; /* Space between content and avatar */
        }

        .message.incoming .message-content {
            border-bottom-left-radius: 5px;
            margin-left: 10px; /* Space between avatar and content */
        }

        .message-time {
            font-size: 11px;
            color: var(--text-secondary);
            margin-top: 5px;
        }

        .message-input-container {
            padding: 20px;
            border-top: 1px solid var(--border-color);
            background-color: var(--darker-bg);
            flex-shrink: 0;
            position: sticky;
            bottom: 0;
            z-index: 10;
        }

        .message-input {
            background-color: var(--dark-bg);
            border: none;
            color: var(--text-color);
            border-radius: 25px;
            padding: 12px 20px;
            resize: none;
            max-height: 120px;
        }

        .message-input:focus {
            background-color: var(--dark-bg);
            color: var(--text-color);
            box-shadow: 0 0 0 0.2rem rgba(0, 136, 204, 0.25);
        }

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

        .send-btn {
            background-color: var(--telegram-blue);
            border: none;
            color: white;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .send-btn:hover {
            background-color: var(--telegram-light-blue);
        }

        /* Welcome screen */
        .welcome-screen {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background-color: var(--dark-bg);
            color: var(--text-secondary);
        }

        .welcome-icon {
            font-size: 80px;
            color: var(--telegram-blue);
            margin-bottom: 20px;
        }

        /* Typing indicator */
        .typing-indicator {
            display: none;
            padding: 10px 20px;
            font-style: italic;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .typing-dots {
            display: inline-block;
        }

        .typing-dots span {
            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% {
                transform: translateY(0);
            }
            30% {
                transform: translateY(-10px);
            }
        }

        /* Login modal */
        .modal-content {
            background-color: var(--darker-bg);
            color: var(--text-color);
            border: 1px solid var(--border-color);
        }

        .modal-header {
            border-bottom: 1px solid var(--border-color);
        }

        .form-control {
            background-color: var(--dark-bg);
            border: 1px solid var(--border-color);
            color: var(--text-color);
        }

        .form-control:focus {
            background-color: var(--dark-bg);
            border-color: var(--telegram-blue);
            color: var(--text-color);
            box-shadow: 0 0 0 0.2rem rgba(0, 136, 204, 0.25);
        }

        .btn-primary {
            background-color: var(--telegram-blue);
            border-color: var(--telegram-blue);
        }

        .btn-primary:hover {
            background-color: var(--telegram-light-blue);
            border-color: var(--telegram-light-blue);
        }

        /* Scrollbar styling */
        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--darker-bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 3px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }

        /* File attachment styles */
        .attachment-preview {
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 15px;
            margin-bottom: 10px;
            background-color: var(--darker-bg);
            transition: all 0.3s ease;
        }

        .attachment-preview.dragover {
            border-color: var(--telegram-blue);
            background-color: rgba(0, 136, 204, 0.1);
        }

        .file-message {
            display: flex;
            align-items: center;
            padding: 10px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            margin-bottom: 5px;
        }

        /* Context Menu - Fixed */
        .context-menu {
            position: fixed !important;
            background-color: var(--darker-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
            z-index: 10000;
            min-width: 150px;
            padding: 5px 0;
            display: none;
        }

        .context-menu-item {
            padding: 10px 15px;
            cursor: pointer;
            transition: background-color 0.2s;
            display: flex;
            align-items: center;
            color: var(--text-color);
            font-size: 14px;
        }

        .context-menu-item:hover {
            background-color: var(--dark-bg);
        }

        .context-menu-item i {
            margin-right: 10px;
            width: 16px;
            color: var(--text-secondary);
        }

        .context-menu-divider {
            height: 1px;
            background-color: var(--border-color);
            margin: 5px 0;
        }

        /* Forward Modal Styles */
        .forward-modal .modal-dialog {
            max-width: 500px;
        }

        .forward-search {
            position: sticky;
            top: 0;
            background-color: var(--darker-bg);
            padding: 15px;
            border-bottom: 1px solid var(--border-color);
            z-index: 10;
        }

        .forward-chat-list {
            max-height: 400px;
            overflow-y: auto;
            padding: 0;
        }

        .forward-chat-item {
            padding: 12px 15px;
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
            transition: background-color 0.2s;
            display: flex;
            align-items: center;
            position: relative;
        }

        .forward-chat-item:hover {
            background-color: var(--dark-bg);
        }

        .forward-chat-item.selected {
            background-color: rgba(0, 136, 204, 0.2);
        }

        .forward-chat-item .chat-avatar {
            width: 40px;
            height: 40px;
            margin-right: 12px;
        }

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

        .forward-chat-name {
            font-weight: 500;
            margin-bottom: 2px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .forward-chat-status {
            font-size: 12px;
            color: var(--text-secondary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .forward-checkbox {
            width: 20px;
            height: 20px;
            border: 2px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }

        .forward-chat-item.selected .forward-checkbox {
            background-color: var(--telegram-blue);
            border-color: var(--telegram-blue);
        }

        .forward-checkbox i {
            color: white;
            font-size: 12px;
            display: none;
        }

        .forward-chat-item.selected .forward-checkbox i {
            display: block;
        }

        .forward-selected-count {
            background-color: var(--telegram-blue);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
        }

        .forward-message-preview {
            background-color: var(--dark-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 12px;
            margin-bottom: 15px;
            font-size: 14px;
            max-height: 100px;
            overflow-y: auto;
        }

        .forward-message-preview .message-sender {
            color: var(--telegram-blue);
            font-weight: bold;
            margin-bottom: 4px;
        }

        /* Reply System */
        .reply-preview {
            background-color: rgba(0, 136, 204, 0.1);
            border-left: 3px solid var(--telegram-blue);
            padding: 8px 12px;
            margin-bottom: 10px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--text-secondary);
            position: relative;
        }

        .reply-preview .reply-close {
            position: absolute;
            right: 8px;
            top: 8px;
            cursor: pointer;
            color: var(--text-secondary);
            font-size: 16px;
        }

        .reply-preview .reply-close:hover {
            color: var(--text-color);
        }

        .reply-to {
            background-color: rgba(0, 136, 204, 0.1);
            border-left: 3px solid var(--telegram-blue);
            padding: 6px 10px;
            margin-bottom: 8px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--telegram-blue);
            cursor: pointer;
        }

        .reply-to:hover {
            background-color: rgba(0, 136, 204, 0.2);
        }

        .reply-sender {
            font-weight: bold;
            color: var(--telegram-blue);
            margin-bottom: 2px;
        }

        .reply-content {
            color: var(--text-secondary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 200px;
        }

        .file-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-size: 18px;
        }

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

        .file-name {
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .file-size {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .message-caption {
            margin-top: 8px;
            font-size: 14px;
            line-height: 1.4;
            word-wrap: break-word;
        }

        .image-message {
            margin-bottom: 0;
        }

        .image-message img {
            max-width: 300px;
            max-height: 400px;
            border-radius: 8px;
            cursor: pointer;
            transition: transform 0.2s;
            display: block;
        }

        .image-message img:hover {
            transform: scale(1.02);
        }

        .file-message {
            display: flex;
            align-items: center;
            padding: 10px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            margin-bottom: 0;
        }

        /* Attachment modal */
        .attachment-options {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            padding: 20px 0;
        }

        .attachment-option {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 20px;
            border-radius: 10px;
            background-color: var(--dark-bg);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: all 0.2s;
            text-decoration: none;
            color: var(--text-color);
        }

        .attachment-option:hover {
            background-color: var(--darker-bg);
            border-color: var(--telegram-blue);
            color: var(--text-color);
        }

        .attachment-option i {
            font-size: 24px;
            margin-bottom: 10px;
            color: var(--telegram-blue);
        }

        /* Search results styles */
        .search-results {
            max-height: 400px;
            overflow-y: auto;
        }

        .search-result-item {
            padding: 12px;
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .search-result-item:hover {
            background-color: var(--dark-bg);
        }

        .search-result-item:last-child {
            border-bottom: none;
        }

        .search-highlight {
            background-color: var(--telegram-blue);
            color: white;
            padding: 2px 4px;
            border-radius: 3px;
        }

        .search-result-meta {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .sender-avatar {
            width: 35px;
            height: 35px;
            border-radius: 50%;
            background-color: var(--telegram-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
            flex-shrink: 0;
            order: 2;
        }

        /* Correct avatar positioning */
        .message.incoming .sender-avatar {
            order: 1; /* Avatar first (left side) */
        }

        .message.incoming .message-content {
            order: 2; /* Content second */
        }

        .message.outgoing .sender-avatar {
            order: 2; /* Avatar second (right side) */
        }

        .message.outgoing .message-content {
            order: 1; /* Content first */
        }

        .user-profile-header {
            text-align: center;
            padding: 20px 0;
        }

        .user-profile-avatar {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            margin: 0 auto 15px;
            background-color: var(--telegram-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 48px;
            font-weight: bold;
            position: relative;
        }

        .user-profile-name {
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 5px;
        }

        .user-profile-username {
            color: var(--text-secondary);
            margin-bottom: 10px;
        }

        .user-profile-status {
            font-size: 14px;
        }

        .user-profile-bio {
            margin-top: 20px;
            padding: 15px;
            background-color: var(--dark-bg);
            border-radius: 8px;
        }

        .chat-info-section {
            margin-bottom: 20px;
        }

        .chat-info-section h6 {
            color: var(--telegram-blue);
            margin-bottom: 10px;
            font-weight: bold;
        }

        .chat-participants {
            max-height: 200px;
            overflow-y: auto;
        }

        .participant-item {
            display: flex;
            align-items: center;
            padding: 10px;
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
        }

        .participant-item:hover {
            background-color: var(--dark-bg);
        }

        .participant-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            margin-right: 12px;
            background-color: var(--telegram-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 16px;
        }

        .participant-info {
            flex: 1;
        }

        .participant-name {
            font-weight: 500;
            margin-bottom: 2px;
        }

        .text-muted {
            color: var(--text-secondary) !important;
        }

        .small {
            font-size: 0.875rem;
        }

        @media (max-width: 768px) {
            .sidebar {
                width: 100%;
                position: absolute;
                z-index: 1000;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
            }

            .sidebar.show {
                transform: translateX(0);
            }

            .chat-area {
                width: 100%;
            }
        }

        .online-indicator {
            width: 12px;
            height: 12px;
            background-color: #4CAF50;
            border-radius: 50%;
            position: absolute;
            bottom: 2px;
            right: 2px;
            border: 2px solid var(--darker-bg);
        }

        .avatar-container {
            position: relative;
            display: inline-block;
        }


        /* Settings Page Styles */
        .settings-list {
            flex: 1;
            overflow-y: auto;
            max-height: calc(100vh - 120px);
        }

        .settings-item {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
            transition: background-color 0.2s;
            display: flex;
            align-items: center;
        }

        .settings-item:hover {
            background-color: var(--dark-bg);
        }

        .settings-item.active {
            background-color: var(--telegram-blue);
        }

        .settings-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            margin-right: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

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

        .settings-title {
            font-weight: 600;
            margin-bottom: 2px;
            color: var(--text-color);
        }

        .settings-description {
            color: var(--text-secondary);
            font-size: 14px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .settings-arrow {
            color: var(--text-secondary);
            font-size: 16px;
        }

        /* Settings Content */
        .settings-content {
            padding: 20px;
            height: calc(100vh - 80px);
            overflow-y: auto;
        }

        .settings-section {
            margin-bottom: 30px;
        }

        .settings-section-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--telegram-blue);
            display: flex;
            align-items: center;
        }

        .settings-section-title i {
            margin-right: 10px;
        }

        .settings-option {
            background-color: var(--darker-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .settings-option-info {
            flex: 1;
        }

        .settings-option-title {
            font-weight: 500;
            margin-bottom: 3px;
        }

        .settings-option-description {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .settings-toggle {
            position: relative;
            display: inline-block;
            width: 50px;
            height: 24px;
        }

        .settings-toggle input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .settings-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--border-color);
            transition: .4s;
            border-radius: 24px;
        }

        .settings-slider:before {
            position: absolute;
            content: "";
            height: 18px;
            width: 18px;
            left: 3px;
            bottom: 3px;
            background-color: white;
            transition: .4s;
            border-radius: 50%;
        }

        input:checked + .settings-slider {
            background-color: var(--telegram-blue);
        }

        input:checked + .settings-slider:before {
            transform: translateX(26px);
        }

        .settings-input-group {
            margin-bottom: 15px;
        }

        .settings-input-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
        }

        .settings-input {
            background-color: var(--dark-bg);
            border: 1px solid var(--border-color);
            color: var(--text-color);
            border-radius: 6px;
            padding: 10px 12px;
            width: 100%;
        }

        .settings-input:focus {
            background-color: var(--dark-bg);
            border-color: var(--telegram-blue);
            color: var(--text-color);
            box-shadow: 0 0 0 0.2rem rgba(0, 136, 204, 0.25);
        }

        .settings-button {
            background-color: var(--telegram-blue);
            border: none;
            color: white;
            padding: 10px 20px;
            border-radius: 6px;
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .settings-button:hover {
            background-color: var(--telegram-light-blue);
        }

        .settings-button.danger {
            background-color: #dc3545;
        }

        .settings-button.danger:hover {
            background-color: #c82333;
        }

        .settings-back-btn {
            background: none;
            border: none;
            color: var(--text-color);
            font-size: 18px;
            padding: 10px;
            cursor: pointer;
            border-radius: 6px;
            transition: background-color 0.2s;
        }

        .settings-back-btn:hover {
            background-color: var(--dark-bg);
        }

        .profile-avatar-large {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background-color: var(--telegram-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            font-weight: bold;
            margin: 0 auto 20px;
            cursor: pointer;
            transition: transform 0.2s;
        }

        .profile-avatar-large:hover {
            transform: scale(1.05);
        }

        .user-info-card {
            background-color: var(--darker-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
            margin-bottom: 20px;
        }

        .user-name-large {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .user-username {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .storage-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .storage-info:last-child {
            border-bottom: none;
        }

        .version-info {
            text-align: center;
            color: var(--text-secondary);
            font-size: 13px;
            margin-top: 20px;
            padding: 15px;
            background-color: var(--darker-bg);
            border-radius: 8px;
        }

        /* Font Size Support */
        .font-size-small {
            font-size: 13px;
        }

        .font-size-medium {
            font-size: 14px;
        }

        .font-size-large {
            font-size: 16px;
        }

        .font-size-extra-large {
            font-size: 18px;
        }

        /* Background Support */
        .bg-gradient1 .messages-container {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }

        .bg-gradient2 .messages-container {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
        }

        .bg-solid .messages-container {
            background: #2c3e50;
        }


        .message-status {
            display: inline-block;
            margin-left: 8px;
            font-size: 12px;
            margin-top: 2px;
        }

        .status-delivered {
            color: #adb5bd; /* Gray for delivered */
        }

        .status-read {
            /*     color: #0088cc; Blue for read */
        }


        /* Add this CSS to your existing styles */

        /* Enhanced Login Modal */
        #loginModal .modal-content {
            border-radius: 15px;
            border: none;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        #loginModal .modal-header {
            border-bottom: 1px solid var(--border-color);
            padding: 1.5rem;
        }

        #loginModal .modal-body {
            padding: 2rem;
        }

        /* 2FA Verification Styling */
        #twoFactorVerification {
            text-align: center;
        }

        #twoFactorCode {
            font-family: 'Courier New', monospace;
            font-weight: bold;
        }

        #twoFactorCode:focus {
            box-shadow: 0 0 0 0.25rem rgba(0, 136, 204, 0.25);
            border-color: var(--telegram-blue);
        }

        /* Button Loading States */
        .btn .btn-spinner {
            display: none;
        }

        .btn:disabled .btn-text {
            display: none;
        }

        .btn:disabled .btn-spinner {
            display: inline;
        }

        /* Enhanced Toast Notifications */
        .toast {
            background-color: var(--darker-bg);
            border: 1px solid var(--border-color);
            color: var(--text-color);
            border-radius: 10px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
            min-width: 300px;
        }

        .toast-header {
            background-color: var(--dark-bg);
            border-bottom: 1px solid var(--border-color);
            color: var(--text-color);
        }

        .toast-header .btn-close {
            filter: invert(1);
        }

        .toast-body {
            padding: 1rem;
            font-size: 14px;
            line-height: 1.4;
        }

        /* Toast Animation */
        .toast.showing {
            animation: slideInRight 0.3s ease-out;
        }

        .toast.hide {
            animation: slideOutRight 0.3s ease-in;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(100%);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        @keyframes slideOutRight {
            from {
                transform: translateX(0);
                opacity: 1;
            }
            to {
                transform: translateX(100%);
                opacity: 0;
            }
        }

        /* Enhanced Confirmation Modal */
        #confirmModal .modal-content {
            border-radius: 15px;
            border: none;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            background-color: var(--darker-bg);
        }

        #confirmModal .modal-header {
            border-bottom: 1px solid var(--border-color);
            background-color: var(--dark-bg);
        }

        #confirmModal .modal-body {
            padding: 2rem;
            text-align: center;
        }

        #confirmModal .confirm-message {
            font-size: 1.1em;
            margin-bottom: 0;
        }

        #confirmModal .confirm-icon {
            font-size: 1.2em;
        }

        /* Form Enhancements */
        .form-control:focus {
            border-color: var(--telegram-blue);
            box-shadow: 0 0 0 0.25rem rgba(0, 136, 204, 0.25);
        }

        .form-control::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }

        /* Success States */
        .text-success {
            color: #28a745 !important;
        }

        .text-danger {
            color: #dc3545 !important;
        }

        .text-warning {
            color: #ffc107 !important;
        }

        .text-info {
            color: #17a2b8 !important;
        }

        /* Loading Button States */
        .btn:disabled {
            opacity: 0.8;
            cursor: not-allowed;
        }

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

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

        /* Enhanced Form Styling */
        .nav-tabs .nav-link {
            color: var(--text-secondary);
            background-color: transparent;
            border: 1px solid transparent;
            border-radius: 8px 8px 0 0;
        }

        .nav-tabs .nav-link:hover {
            color: var(--text-color);
            background-color: var(--dark-bg);
        }

        .nav-tabs .nav-link.active {
            color: var(--telegram-blue);
            background-color: var(--dark-bg);
            border-color: var(--border-color);
            border-bottom-color: var(--dark-bg);
        }

        .nav-tabs {
            border-bottom: 1px solid var(--border-color);
        }

        /* Responsive Enhancements */
        @media (max-width: 576px) {
            .toast {
                min-width: calc(100vw - 2rem);
                max-width: calc(100vw - 2rem);
            }

            #loginModal .modal-body {
                padding: 1rem;
            }

            #confirmModal .modal-body {
                padding: 1.5rem;
            }
        }

        /* Focus States */
        .btn:focus,
        .form-control:focus {
            outline: none;
        }

        /* Accessibility */
        .btn[disabled] {
            pointer-events: none;
        }

        /* Dark mode adjustments for Bootstrap components */
        .modal-header .btn-close {
            filter: invert(1);
        }

        .nav-tabs .nav-link {
            border-color: transparent;
        }

        .nav-tabs .nav-link.active {
            border-color: var(--border-color) var(--border-color) var(--dark-bg);
        }


        /* Enhanced Mobile Responsiveness */
        @media (max-width: 768px) {
            .sidebar {
                width: 100%;
                position: fixed;
                z-index: 1050;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                height: 100vh;
                top: 0;
                left: 0;
            }

            .sidebar.show {
                transform: translateX(0);
            }

            .chat-area {
                width: 100%;
                margin-left: 0;
            }

            .main-container {
                overflow: hidden;
            }

            /* Mobile overlay when sidebar is open */
            .sidebar-overlay {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background-color: rgba(0, 0, 0, 0.5);
                z-index: 1040;
            }

            .sidebar-overlay.show {
                display: block;
            }

            /* Hide desktop sidebar toggle button on mobile */
            .d-lg-none {
                display: block !important;
            }

            /* Adjust chat header for mobile */
            .chat-header {
                padding: 10px 15px;
            }

            .chat-avatar {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }

            /* Adjust message styling for mobile */
            .message {
                max-width: 85%;
            }

            .message-input-container {
                padding: 15px;
            }

            /* Better touch targets */
            .chat-item {
                padding: 18px 20px;
            }

            .settings-item {
                padding: 18px 20px;
            }
        }

        /* Hamburger menu icon for mobile */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-color);
            font-size: 20px;
            padding: 10px;
            cursor: pointer;
            border-radius: 6px;
            transition: background-color 0.2s;
        }

        .mobile-menu-btn:hover {
            background-color: var(--dark-bg);
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
        }

        /* Welcome screen enhancements */
        .welcome-actions {
            margin-top: 30px;
        }

        .welcome-actions .btn {
            margin: 0 10px 10px 0;
        }

        @media (max-width: 576px) {
            .welcome-actions .btn {
                width: 100%;
                margin: 0 0 10px 0;
            }
        }


        /* Touch improvements */
        @media (max-width: 768px) {
            /* Larger touch targets */
            .btn {
                min-height: 44px;
                min-width: 44px;
            }

            .chat-item, .settings-item {
                min-height: 60px;
            }

            /* Better tap highlighting */
            .chat-item:active,
            .settings-item:active,
            .btn:active {
                background-color: var(--telegram-blue) !important;
                transform: scale(0.98);
            }

            /* Smooth scrolling on mobile */
            .chat-list,
            .settings-list,
            .messages-container {
                -webkit-overflow-scrolling: touch;
                scroll-behavior: smooth;
            }

            /* Hide scrollbars on mobile for cleaner look */
            .chat-list::-webkit-scrollbar,
            .settings-list::-webkit-scrollbar,
            .messages-container::-webkit-scrollbar {
                display: none;
            }
        }


        /* Enhanced Mobile Responsiveness */
        @media (max-width: 768px) {
            .sidebar {
                width: 100%;
                position: fixed;
                z-index: 1050;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                height: 100vh;
                top: 0;
                left: 0;
            }

            .sidebar.show {
                transform: translateX(0);
            }

            .chat-area {
                width: 100%;
                margin-left: 0;
            }

            .main-container {
                overflow: hidden;
            }

            /* Hide welcome screen on mobile - show chat list instead */
            .welcome-screen {
                display: none !important;
            }

            /* Show chat content by default on mobile when chat is selected */
            .chat-area {
                display: flex;
                flex-direction: column;
            }

            /* Mobile overlay when sidebar is open */
            .sidebar-overlay {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background-color: rgba(0, 0, 0, 0.5);
                z-index: 1040;
            }

            .sidebar-overlay.show {
                display: block;
            }

            /* Empty chat list message for mobile */
            .empty-chat-list {
                text-align: center;
                padding: 40px 20px;
                color: var(--text-secondary);
            }

            .empty-chat-list .empty-icon {
                font-size: 60px;
                color: var(--telegram-blue);
                margin-bottom: 20px;
            }

            .empty-chat-list h4 {
                color: var(--text-color);
                margin-bottom: 15px;
            }

            .empty-chat-list p {
                margin-bottom: 25px;
                font-size: 14px;
            }

            /* Hide desktop sidebar toggle button on mobile */
            .d-lg-none {
                display: block !important;
            }

            /* Adjust chat header for mobile */
            .chat-header {
                padding: 10px 15px;
            }

            .chat-avatar {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }

            /* Adjust message styling for mobile */
            .message {
                max-width: 85%;
            }

            .message-input-container {
                padding: 15px;
            }

            /* Better touch targets */
            .chat-item {
                padding: 18px 20px;
            }

            .settings-item {
                padding: 18px 20px;
            }
        }


        /* Mobile Bottom Navigation */
        .mobile-bottom-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: var(--darker-bg);
            border-top: 1px solid var(--border-color);
            display: none; /* Hidden by default */
            z-index: 1000;
            height: 60px;
            transition: transform 0.3s ease;
        }

        /* Only show on mobile */
        @media (max-width: 768px) {
            .mobile-bottom-nav {
                display: flex; /* This will show all three tabs */
            }

            .mobile-bottom-nav.hidden {
                transform: translateY(100%);
            }
        }

        .bottom-nav-item {
            flex: 1; /* Each tab takes equal width */
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary); /* Default inactive color */
            cursor: pointer;
            transition: all 0.2s;
            padding: 8px 4px;
            text-decoration: none;
            position: relative;
            background-color: transparent; /* Default background */
        }

        /* Hover state for inactive tabs */
        .bottom-nav-item:hover {
            color: var(--text-color);
            background-color: rgba(255, 255, 255, 0.05);
        }

        /* Active tab styling */
        .bottom-nav-item.active {
            color: var(--telegram-blue) !important; /* Blue text for active */
            background-color: rgba(0, 136, 204, 0.1) !important; /* Blue background */
        }

        /* Icon styling */
        .bottom-nav-item i {
            font-size: 20px;
            margin-bottom: 4px;
            transition: color 0.2s;
        }

        /* Text styling */
        .bottom-nav-item span {
            font-size: 11px;
            font-weight: 500;
            transition: color 0.2s;
        }

        /* Active tab icon and text */
        .bottom-nav-item.active i,
        .bottom-nav-item.active span {
            color: var(--telegram-blue);
        }

        /* Adjust main container for mobile bottom nav */
        @media (max-width: 768px) {
            .main-container {
                padding-bottom: 60px;
            }

            .chat-area {
                height: calc(100vh - 60px);
            }

            .sidebar {
                height: calc(100vh - 60px);
            }

            /* When bottom nav is hidden, remove padding */
            .main-container.bottom-nav-hidden {
                padding-bottom: 0;
            }

            .main-container.bottom-nav-hidden .chat-area {
                height: 100vh;
            }

            .main-container.bottom-nav-hidden .sidebar {
                height: 100vh;
            }
        }


        /* Avatar Upload Styling */
        .profile-avatar-large {
            position: relative;
            overflow: hidden;
        }

        .avatar-upload-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            text-align: center;
            padding: 8px;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            font-size: 14px;
        }

        .profile-avatar-large:hover .avatar-upload-overlay {
            transform: translateY(0);
        }

        .avatar-container {
            cursor: pointer;
        }

        .avatar-container:hover {
            opacity: 0.8;
            transition: opacity 0.2s ease;
        }


        /* Add to the existing CSS */
        .avatar-upload-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            text-align: center;
            padding: 8px;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            font-size: 14px;
            border-radius: 0 0 50% 50%;
        }

        .profile-avatar-large:hover .avatar-upload-overlay {
            transform: translateY(0);
        }

        .profile-avatar-large {
            position: relative;
            overflow: hidden;
            cursor: pointer;
        }
        
        
        
        
        
        
        
        
        
        
        
        
        /* Profile Info Styles for Chat Info Modal */
.profile-info-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
}

.profile-info-item:last-child {
    border-bottom: none;
}

.profile-info-item i {
    width: 20px;
    flex-shrink: 0;
}

.profile-additional-info {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 15px;
    border: 1px solid var(--border-color);
}

.bio-content {
    background-color: var(--dark-bg);
    padding: 12px;
    border-radius: 6px;
    border-left: 3px solid var(--telegram-blue);
    font-style: italic;
    line-height: 1.4;
    color: var(--text-color);
}

.user-profile-bio h6 {
    color: var(--telegram-blue);
    font-weight: 600;
    margin-bottom: 10px;
}

/* Enhanced user profile header */
.user-profile-header {
    text-align: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.user-profile-header:last-child {
    border-bottom: none;
    margin-bottom: 0;
}