.desktop-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.desktop-sidebar {
    width: 72px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    z-index: 100;
}

.desktop-sidebar-profile {
    margin-bottom: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.desktop-sidebar-profile:hover {
    transform: scale(1.1);
}

.desktop-sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    padding: 0 12px;
}

.desktop-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 0;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    position: relative;
}

.desktop-nav-item:hover {
    background: rgba(0, 153, 255, 0.1);
    color: var(--primary-color);
}

.desktop-nav-item.active {
    background: rgba(0, 153, 255, 0.15);
    color: var(--primary-color);
}

.desktop-nav-item .icon {
    width: 24px;
    height: 24px;
}

.desktop-nav-item-label {
    font-size: 11px;
}

.desktop-nav-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 8px;
    background: var(--error-color);
    color: white;
    font-size: 10px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.desktop-main {
    flex: 1;
    display: flex;
    overflow: hidden;
    position: relative;
}

.desktop-right-sidebar {
    width: 300px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-left: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: absolute;
    right: 0;
    top: 0;
    z-index: 50;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
}

.desktop-right-sidebar.open {
    transform: translateX(0);
}

.desktop-right-sidebar-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.desktop-right-sidebar-title {
    font-size: 16px;
    font-weight: 600;
}

.desktop-right-sidebar-close {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    color: var(--text-secondary);
}

.desktop-right-sidebar-close:hover {
    background: rgba(0, 153, 255, 0.1);
    color: var(--primary-color);
}

.desktop-right-sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.desktop-right-sidebar-section {
    margin-bottom: 24px;
}

.desktop-right-sidebar-section-title {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.desktop-right-sidebar-item {
    display: flex;
    align-items: center;
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 4px;
}

.desktop-right-sidebar-item:hover {
    background: rgba(0, 153, 255, 0.05);
}

.desktop-right-sidebar-item.active {
    background: rgba(0, 153, 255, 0.1);
}

.desktop-right-sidebar-item-icon {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    color: var(--text-secondary);
}

.desktop-right-sidebar-item.active .desktop-right-sidebar-item-icon {
    color: var(--primary-color);
}

.desktop-right-sidebar-item-label {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
}

.desktop-right-sidebar-item-status {
    font-size: 12px;
    color: var(--text-tertiary);
}

.desktop-right-sidebar-item.active .desktop-right-sidebar-item-status {
    color: var(--primary-color);
}

.desktop-right-sidebar-divider {
    height: 1px;
    background: var(--border-color);
    margin: 16px 0;
}

.desktop-chat-list {
    width: 320px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
}

.desktop-chat-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--glass-border);
}

.desktop-chat-search {
    position: relative;
    margin-bottom: 12px;
}

.desktop-chat-search input {
    padding-left: 40px;
}

.desktop-chat-search .icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

.desktop-chat-tabs {
    display: flex;
    gap: 20px;
}

.desktop-chat-tab {
    padding: 8px 0;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.desktop-chat-tab:hover {
    color: var(--primary-color);
}

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

.desktop-chat-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.desktop-chat-items {
    flex: 1;
    overflow-y: auto;
}

.desktop-chat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.desktop-chat-item:hover {
    background: rgba(0, 153, 255, 0.05);
}

.desktop-chat-item.active {
    background: rgba(0, 153, 255, 0.1);
}

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

.desktop-chat-item-name {
    font-weight: 500;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.desktop-chat-item-name .name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.desktop-chat-item-time {
    font-size: 12px;
    color: var(--text-tertiary);
}

.desktop-chat-item-preview {
    font-size: 12px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.desktop-chat-item-unread {
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    border-radius: 9px;
    background: var(--error-color);
    color: white;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.desktop-chat-window {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
}

.desktop-chat-window-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--glass-border);
}

.desktop-chat-window-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.desktop-chat-window-name {
    font-size: 16px;
    font-weight: 600;
}

.desktop-chat-window-actions {
    display: flex;
    gap: 8px;
}

.desktop-chat-window-actions .btn-icon {
    background: transparent;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.desktop-chat-window-actions .btn-icon:hover {
    background: rgba(0, 153, 255, 0.1);
}

.desktop-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
}

.desktop-message {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    animation: slideInLeft 0.3s ease-in-out;
}

.desktop-message.self {
    flex-direction: row-reverse;
}

.desktop-message-avatar {
    flex-shrink: 0;
}

.desktop-message-content {
    max-width: 60%;
}

.desktop-message-name {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.desktop-message.self .desktop-message-name {
    text-align: right;
}

.desktop-message-bubble {
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    background: var(--message-bubble-bg, var(--bg-secondary));
    backdrop-filter: var(--blur-amount);
    -webkit-backdrop-filter: var(--blur-amount);
    word-wrap: break-word;
    position: relative;
}

.desktop-message.self .desktop-message-bubble {
    background: var(--message-bubble-self-bg, var(--primary-color));
    backdrop-filter: var(--blur-amount);
    -webkit-backdrop-filter: var(--blur-amount);
    color: white;
}

.desktop-message-bubble-image {
    max-width: 200px;
    max-height: 200px;
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    cursor: pointer;
    object-fit: cover;
    transition: var(--transition);
}

.desktop-message-bubble-image:hover {
    opacity: 0.9;
}

.desktop-message-bubble-video {
    max-width: 280px;
    max-height: 200px;
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    cursor: pointer;
    object-fit: cover;
}

.desktop-message-bubble-media {
    border: none !important;
    background: transparent !important;
    padding: 0 !important;
    box-shadow: none !important;
}

.desktop-message-bubble-file {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(0, 153, 255, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.desktop-message-bubble-file:hover {
    background: rgba(0, 153, 255, 0.15);
}

.desktop-message-bubble-file-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: var(--radius-sm);
    color: white;
}

.desktop-message-bubble-file-info {
    flex: 1;
}

.desktop-message-bubble-file-name {
    font-weight: 500;
    margin-bottom: 4px;
}

.desktop-message-bubble-file-size {
    font-size: 12px;
    color: var(--text-tertiary);
}

.desktop-message-bubble-text {
    line-height: 1.6;
}

.desktop-message-bubble-text a {
    color: var(--primary-color);
    text-decoration: none;
}

.desktop-message-bubble-text code {
    background: rgba(0, 0, 0, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.desktop-message-time {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.desktop-message-time-center {
    font-size: 11px;
    color: var(--text-tertiary);
    text-align: center;
    margin: 8px 0;
}

.desktop-message.self .desktop-message-time {
    text-align: right;
}

.message-edited-badge {
    font-size: 10px;
    color: var(--text-tertiary);
    margin-left: 4px;
}

.message-action-menu {
    position: fixed;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    min-width: 140px;
    padding: 4px 0;
}

.message-action-menu-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    color: var(--text-primary);
}

.message-action-menu-item:hover {
    background: rgba(0, 153, 255, 0.1);
}

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

.message-action-menu-item.danger:hover {
    background: rgba(255, 77, 79, 0.1);
}

.message-action-menu-item svg {
    width: 16px;
    height: 16px;
    margin-right: 10px;
}

.desktop-message-actions {
    position: relative;
}

.desktop-message-actions .dropdown-menu {
    right: 0;
    left: auto;
}

.desktop-chat-input {
    padding: 16px 24px;
    border-top: 1px solid var(--glass-border);
}

.desktop-chat-input-toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.desktop-chat-input-toolbar .btn-icon {
    background: transparent;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.desktop-chat-input-toolbar .btn-icon:hover {
    background: rgba(0, 153, 255, 0.1);
    color: var(--primary-color);
}

.desktop-chat-input-textarea {
    width: 100%;
    min-height: 100px;
    max-height: 200px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    resize: none;
    font-size: 14px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    color: var(--text-primary);
    transition: var(--transition);
}

.desktop-chat-input-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 153, 255, 0.1);
}

.desktop-chat-input-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 12px;
}

.desktop-chat-attachment-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.desktop-chat-attachment-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    max-width: 250px;
}

.desktop-chat-attachment-item.desktop-attachment-image,
.desktop-chat-attachment-item.desktop-attachment-video {
    padding: 4px;
    border-radius: var(--radius-sm);
}

.desktop-chat-attachment-item img,
.desktop-chat-attachment-item video {
    max-width: 80px;
    max-height: 80px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.desktop-chat-attachment-item .desktop-attachment-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.desktop-chat-attachment-item .desktop-attachment-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.desktop-chat-attachment-item .desktop-attachment-name {
    font-size: 12px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.desktop-chat-attachment-item .desktop-attachment-size {
    font-size: 10px;
    color: var(--text-tertiary);
}

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

.desktop-contacts-panel {
    width: 320px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
}

.desktop-contacts-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--glass-border);
}

.desktop-contacts-tabs {
    display: flex;
    gap: 20px;
    margin-top: 12px;
}

.desktop-contacts-tab {
    padding: 8px 0;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.desktop-contacts-tab:hover {
    color: var(--primary-color);
}

.desktop-contacts-tab.active {
    color: var(--primary-color);
}

.desktop-contacts-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.desktop-contacts-tab-badge {
    position: absolute;
    top: -4px;
    right: -8px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 8px;
    background: var(--error-color);
    color: white;
    font-size: 10px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.desktop-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
}

.desktop-contact-item:hover {
    background: rgba(0, 153, 255, 0.05);
}

.desktop-contact-item-info {
    flex: 1;
}

.desktop-contact-item-name {
    font-weight: 500;
    margin-bottom: 4px;
}

.desktop-contact-item-signature {
    font-size: 12px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.desktop-profile-panel {
    width: 360px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
}

.desktop-profile-header {
    padding: 32px 24px;
    text-align: center;
    border-bottom: 1px solid var(--glass-border);
}

.desktop-profile-avatar {
    margin-bottom: 16px;
}

.desktop-profile-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.desktop-profile-id {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.desktop-profile-signature {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.desktop-profile-qrcode {
    display: inline-block;
    padding: 12px;
    background: white;
    border-radius: var(--radius-md);
}

.desktop-profile-menu {
    flex: 1;
    overflow-y: auto;
}

.desktop-profile-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    cursor: pointer;
    transition: var(--transition);
}

.desktop-profile-menu-item:hover {
    background: rgba(0, 153, 255, 0.05);
}

.desktop-profile-menu-item .icon {
    color: var(--text-secondary);
}

.desktop-profile-menu-item-label {
    flex: 1;
}

.desktop-profile-menu-item-arrow {
    color: var(--text-tertiary);
}

.desktop-empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
}

.desktop-empty-state .icon {
    width: 80px;
    height: 80px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.desktop-empty-state-text {
    font-size: 16px;
}

.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
    overflow-x: hidden;
}

.search-results {
    padding: 8px;
    min-height: 50px;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.search-result-item:hover {
    background: rgba(0, 153, 255, 0.1);
}

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

.search-result-name {
    font-weight: 500;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-result-detail {
    font-size: 12px;
    color: var(--text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-result-action {
    flex-shrink: 0;
}

.search-no-results {
    padding: 24px;
    text-align: center;
    color: var(--text-tertiary);
    font-size: 14px;
}

.friend-request-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.friend-request-type {
    width: 100%;
    font-size: 11px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.friend-request-info {
    flex: 1;
    min-width: 0;
    min-height: 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.friend-request-name {
    font-weight: 500;
    margin-bottom: 4px;
}

.friend-request-message {
    font-size: 12px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.friend-request-status {
    margin-top: 4px;
}

.request-status {
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--bg-tertiary);
}

.status-pending {
    color: var(--warning-color);
}

.status-accepted {
    color: var(--success-color);
}

.status-rejected {
    color: var(--error-color);
}

.status-ignored {
    color: var(--text-tertiary);
}

.status-unknown {
    color: var(--text-tertiary);
}

.friend-request-actions {
    display: flex;
    gap: 8px;
    margin-left: auto;
}