/**
 * UniNexus Pro Chat - WhatsApp Theme
 * Windows 11 + WhatsApp Web Hybrid Style
 * @version 1.0.0
 */

/* =============================================
   CSS Variables - WhatsApp + Windows 11
   ============================================= */
:root {
    /* WhatsApp Green */
    --wa-green: #25d366;
    --wa-green-dark: #128c7e;
    --wa-green-light: #dcf8c6;
    --wa-teal: #075e54;
    --wa-teal-dark: #054640;
    
    /* Windows 11 Colors */
    --win-bg: #f0f2f5;
    --win-surface: #ffffff;
    --win-border: rgba(0, 0, 0, 0.08);
    --win-text: #111b21;
    --win-text-secondary: #667781;
    --win-accent: #0078d4;
    
    /* Chat Specific */
    --chat-bg: #efeae2;
    --chat-pattern: url("data:image/png;base64,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");
    
    /* Message Bubbles */
    --bubble-out: #d9fdd3;
    --bubble-in: #ffffff;
    --bubble-system: rgba(255, 255, 255, 0.9);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* Sizing */
    --sidebar-width: 400px;
    --header-height: 60px;
    --input-height: 62px;
    --info-panel-width: 340px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-bubble: 7.5px;
    
    /* Transitions */
    --transition: all 0.2s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --win-bg: #111b21;
    --win-surface: #202c33;
    --win-border: rgba(255, 255, 255, 0.08);
    --win-text: #e9edef;
    --win-text-secondary: #8696a0;
    --chat-bg: #0b141a;
    --bubble-out: #005c4b;
    --bubble-in: #202c33;
    --bubble-system: rgba(32, 44, 51, 0.9);
}

/* =============================================
   Base Styles
   ============================================= */
.unx-chat * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.unx-chat {
    font-family: 'Vazirmatn', 'Segoe UI', system-ui, sans-serif;
    font-size: 14px;
    color: var(--win-text);
    direction: rtl;
    height: 100vh;
    display: flex;
    background: var(--win-bg);
    overflow: hidden;
}

/* =============================================
   Sidebar - Room List
   ============================================= */
.chat-sidebar {
    width: var(--sidebar-width);
    height: 100%;
    background: var(--win-surface);
    border-left: 1px solid var(--win-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    height: var(--header-height);
    background: var(--win-surface);
    border-bottom: 1px solid var(--win-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--wa-green);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 16px;
    overflow: hidden;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sidebar-actions {
    display: flex;
    gap: 8px;
}

.sidebar-action-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--win-text-secondary);
    font-size: 20px;
    transition: var(--transition);
}

.sidebar-action-btn:hover {
    background: var(--win-border);
}

/* Search Box */
.search-container {
    padding: 8px 12px;
    background: var(--win-surface);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--win-bg);
    border-radius: 8px;
    padding: 0 12px;
    height: 40px;
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 14px;
    font-family: inherit;
    color: var(--win-text);
    padding: 0 8px;
}

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

.search-icon {
    color: var(--win-text-secondary);
}

/* Room List */
.room-list {
    flex: 1;
    overflow-y: auto;
}

.room-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--win-border);
}

.room-item:hover {
    background: var(--win-bg);
}

.room-item.active {
    background: var(--win-bg);
}

.room-avatar {
    position: relative;
    width: 50px;
    height: 50px;
    flex-shrink: 0;
}

.room-avatar .avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--wa-green) 0%, var(--wa-teal) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 18px;
    overflow: hidden;
}

.room-avatar .avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.online-indicator {
    position: absolute;
    bottom: 2px;
    left: 2px;
    width: 12px;
    height: 12px;
    background: var(--wa-green);
    border-radius: 50%;
    border: 2px solid var(--win-surface);
}

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

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

.room-name {
    font-weight: 500;
    font-size: 16px;
    color: var(--win-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.room-time {
    font-size: 12px;
    color: var(--win-text-secondary);
    flex-shrink: 0;
}

.room-preview {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.last-message {
    font-size: 14px;
    color: var(--win-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.unread-badge {
    background: var(--wa-green);
    color: white;
    font-size: 11px;
    font-weight: 600;
    min-width: 20px;
    height: 20px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
    margin-right: 8px;
}

.room-item.muted .unread-badge {
    background: var(--win-text-secondary);
}

.muted-icon {
    color: var(--win-text-secondary);
    font-size: 14px;
    margin-right: 4px;
}

/* =============================================
   Main Chat Area
   ============================================= */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--chat-bg);
    background-image: var(--chat-pattern);
    position: relative;
}

.chat-main.no-chat {
    justify-content: center;
    align-items: center;
}

.no-chat-placeholder {
    text-align: center;
    color: var(--win-text-secondary);
}

.no-chat-placeholder .icon {
    font-size: 80px;
    margin-bottom: 24px;
    opacity: 0.5;
}

.no-chat-placeholder h2 {
    font-size: 28px;
    font-weight: 300;
    color: var(--win-text);
    margin-bottom: 12px;
}

.no-chat-placeholder p {
    font-size: 14px;
    max-width: 400px;
}

/* Chat Header */
.chat-header {
    height: var(--header-height);
    background: var(--win-surface);
    border-bottom: 1px solid var(--win-border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
}

.chat-header .room-avatar {
    width: 40px;
    height: 40px;
    cursor: pointer;
}

.chat-header .room-avatar .avatar {
    font-size: 14px;
}

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

.chat-header-name {
    font-weight: 500;
    font-size: 16px;
    color: var(--win-text);
}

.chat-header-status {
    font-size: 13px;
    color: var(--win-text-secondary);
}

.chat-header-actions {
    display: flex;
    gap: 4px;
}

.header-action-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--win-text-secondary);
    font-size: 20px;
    transition: var(--transition);
}

.header-action-btn:hover {
    background: var(--win-border);
}

/* Messages Container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px 60px;
    display: flex;
    flex-direction: column;
}

/* Jump to Unread */
.jump-to-unread {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--wa-green);
    color: white;
    text-align: center;
    padding: 8px 16px;
    border-radius: var(--radius);
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 13px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.jump-to-unread:hover {
    background: var(--wa-green-dark);
}

/* Date Divider */
.date-divider {
    text-align: center;
    margin: 16px 0;
}

.date-divider span {
    background: var(--bubble-system);
    color: var(--win-text-secondary);
    font-size: 12px;
    padding: 6px 12px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

/* Message Bubbles */
.message {
    display: flex;
    margin-bottom: 2px;
    position: relative;
}

.message.outgoing {
    justify-content: flex-start;
}

.message.incoming {
    justify-content: flex-end;
}

.message.system {
    justify-content: center;
}

.message-bubble {
    max-width: 65%;
    padding: 6px 7px 8px 9px;
    border-radius: var(--radius-bubble);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.message.outgoing .message-bubble {
    background: var(--bubble-out);
    border-top-right-radius: 0;
}

.message.incoming .message-bubble {
    background: var(--bubble-in);
    border-top-left-radius: 0;
}

.message.system .message-bubble {
    background: var(--bubble-system);
    max-width: none;
    font-size: 12px;
    color: var(--win-text-secondary);
    padding: 6px 12px;
}

/* Reply Preview in Message */
.message-reply-preview {
    background: rgba(0, 0, 0, 0.06);
    border-right: 4px solid var(--wa-green);
    padding: 6px 10px;
    margin-bottom: 4px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.message-reply-preview:hover {
    background: rgba(0, 0, 0, 0.1);
}

.reply-author {
    color: var(--wa-green-dark);
    font-weight: 500;
    margin-bottom: 2px;
}

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

/* Sender Name (in groups) */
.message-sender {
    font-size: 13px;
    font-weight: 500;
    color: var(--wa-teal);
    margin-bottom: 2px;
}

/* Message Content */
.message-content {
    word-wrap: break-word;
    line-height: 1.4;
}

.message-content a {
    color: var(--win-accent);
    text-decoration: none;
}

.message-content a:hover {
    text-decoration: underline;
}

.message-content .mention {
    color: var(--win-accent);
    font-weight: 500;
    cursor: pointer;
}

/* Message Media */
.message-media {
    margin: 4px 0;
    border-radius: 6px;
    overflow: hidden;
}

.message-media img {
    max-width: 330px;
    max-height: 330px;
    border-radius: 6px;
    cursor: pointer;
}

.message-media.file {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0, 0, 0, 0.04);
    padding: 10px;
    border-radius: 8px;
}

.file-icon {
    width: 40px;
    height: 48px;
    background: var(--wa-green);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.file-info {
    flex: 1;
}

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

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

/* Voice Message */
.message-media.audio {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px;
    min-width: 280px;
}

.audio-play-btn {
    width: 40px;
    height: 40px;
    background: var(--wa-green);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    flex-shrink: 0;
}

.audio-waveform {
    flex: 1;
    height: 30px;
    display: flex;
    align-items: center;
    gap: 2px;
}

.audio-waveform .bar {
    width: 3px;
    background: var(--wa-green-dark);
    border-radius: 2px;
}

.audio-duration {
    font-size: 12px;
    color: var(--win-text-secondary);
    flex-shrink: 0;
}

/* Message Footer */
.message-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 4px;
    margin-top: 2px;
}

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

.message-status {
    font-size: 16px;
    color: var(--win-text-secondary);
}

.message-status.read {
    color: #53bdeb;
}

/* Message Actions (on hover) */
.message-actions {
    position: absolute;
    top: 4px;
    opacity: 0;
    transition: var(--transition);
    display: flex;
    gap: 2px;
    background: var(--win-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 4px;
}

.message.outgoing .message-actions {
    left: -60px;
}

.message.incoming .message-actions {
    right: -60px;
}

.message:hover .message-actions {
    opacity: 1;
}

.message-action-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--win-text-secondary);
    transition: var(--transition);
}

.message-action-btn:hover {
    background: var(--win-bg);
}

/* =============================================
   Input Area
   ============================================= */
.chat-input-area {
    background: var(--win-surface);
    padding: 10px 16px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    min-height: var(--input-height);
}

/* Reply Preview Bar */
.reply-preview-bar {
    display: none;
    background: var(--win-bg);
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 10px 16px;
    margin: 0 16px;
    margin-bottom: -10px;
    border-right: 4px solid var(--wa-green);
}

.reply-preview-bar.active {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.reply-preview-content {
    flex: 1;
}

.reply-preview-author {
    font-weight: 500;
    color: var(--wa-green-dark);
    font-size: 13px;
    margin-bottom: 2px;
}

.reply-preview-text {
    font-size: 13px;
    color: var(--win-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.reply-close-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--win-text-secondary);
}

/* Input Buttons */
.input-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--win-text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

.input-btn:hover {
    background: var(--win-bg);
}

/* Text Input */
.input-container {
    flex: 1;
    background: var(--win-bg);
    border-radius: 8px;
    display: flex;
    align-items: flex-end;
    padding: 0 12px;
    min-height: 42px;
    max-height: 150px;
}

.input-container textarea {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 15px;
    font-family: inherit;
    color: var(--win-text);
    resize: none;
    padding: 10px 0;
    line-height: 1.4;
    max-height: 130px;
    direction: rtl;
}

.input-container textarea::placeholder {
    color: var(--win-text-secondary);
}

/* Send Button */
.send-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--wa-green);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: white;
    transition: var(--transition);
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--wa-green-dark);
}

.send-btn:disabled {
    background: var(--win-text-secondary);
    cursor: not-allowed;
}

/* Recording State */
.chat-input-area.recording {
    background: #fee2e2;
}

.recording-indicator {
    display: none;
    flex: 1;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.chat-input-area.recording .recording-indicator {
    display: flex;
}

.chat-input-area.recording .input-container,
.chat-input-area.recording .emoji-btn,
.chat-input-area.recording .attach-btn {
    display: none;
}

.recording-dot {
    width: 12px;
    height: 12px;
    background: #ef4444;
    border-radius: 50%;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.recording-time {
    font-size: 16px;
    font-weight: 500;
    color: #ef4444;
}

.cancel-recording-btn {
    padding: 8px 16px;
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
}

/* =============================================
   Info Panel (Right Side)
   ============================================= */
.info-panel {
    width: 0;
    background: var(--win-surface);
    border-right: 1px solid var(--win-border);
    overflow: hidden;
    transition: width 0.3s ease;
    display: flex;
    flex-direction: column;
}

.info-panel.active {
    width: var(--info-panel-width);
}

.info-panel-header {
    height: var(--header-height);
    background: var(--win-surface);
    border-bottom: 1px solid var(--win-border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 24px;
}

.info-close-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--win-text);
}

.info-panel-header h3 {
    font-size: 18px;
    font-weight: 500;
}

.info-panel-content {
    flex: 1;
    overflow-y: auto;
}

/* Group Info */
.group-avatar-section {
    text-align: center;
    padding: 28px 24px;
    background: var(--win-bg);
}

.group-avatar-large {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--wa-green) 0%, var(--wa-teal) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 72px;
    font-weight: 600;
    overflow: hidden;
}

.group-avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.group-name {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 4px;
}

.group-description {
    color: var(--win-text-secondary);
    font-size: 14px;
}

/* Info Sections */
.info-section {
    padding: 16px 24px;
    border-bottom: 1px solid var(--win-border);
}

.info-section-title {
    font-size: 14px;
    color: var(--wa-green);
    margin-bottom: 12px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    cursor: pointer;
}

.info-item:hover {
    opacity: 0.8;
}

.info-item-icon {
    width: 24px;
    text-align: center;
    color: var(--win-text-secondary);
    font-size: 18px;
}

.info-item-text {
    flex: 1;
}

/* Participants List */
.participants-list {
    padding: 0;
}

.participant-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 24px;
    cursor: pointer;
    transition: var(--transition);
}

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

.participant-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--wa-green) 0%, var(--wa-teal) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    overflow: hidden;
}

.participant-info {
    flex: 1;
}

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

.participant-role {
    font-size: 13px;
    color: var(--wa-green);
}

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

/* =============================================
   Create Group Modal
   ============================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--win-surface);
    border-radius: var(--radius-lg);
    width: 500px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-header h3 {
    font-size: 18px;
    font-weight: 500;
}

.modal-close-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--win-text-secondary);
}

.modal-body {
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--win-border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    background: var(--win-surface);
    color: var(--win-text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--wa-green);
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--win-border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.btn {
    padding: 10px 24px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-secondary {
    background: var(--win-bg);
    color: var(--win-text);
}

.btn-primary {
    background: var(--wa-green);
    color: white;
}

.btn-primary:hover {
    background: var(--wa-green-dark);
}

/* =============================================
   Emoji Picker
   ============================================= */
.emoji-picker {
    position: absolute;
    bottom: 70px;
    right: 60px;
    width: 340px;
    height: 400px;
    background: var(--win-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.emoji-picker.active {
    display: flex;
}

.emoji-picker-header {
    padding: 12px;
    border-bottom: 1px solid var(--win-border);
}

.emoji-picker-header input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--win-border);
    border-radius: var(--radius);
    font-size: 14px;
}

.emoji-picker-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.emoji-category {
    margin-bottom: 16px;
}

.emoji-category-title {
    font-size: 12px;
    color: var(--win-text-secondary);
    margin-bottom: 8px;
}

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

.emoji-item {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
}

.emoji-item:hover {
    background: var(--win-bg);
}

/* =============================================
   Attach Menu
   ============================================= */
.attach-menu {
    position: absolute;
    bottom: 70px;
    right: 16px;
    background: var(--win-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    display: none;
}

.attach-menu.active {
    display: block;
}

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

.attach-menu-item:hover {
    background: var(--win-bg);
}

.attach-menu-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.attach-menu-icon.image { background: #7c3aed; }
.attach-menu-icon.document { background: #5b21b6; }
.attach-menu-icon.audio { background: #f97316; }

.attach-menu-text {
    font-size: 15px;
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 1024px) {
    .info-panel.active {
        position: absolute;
        right: 0;
        top: 0;
        bottom: 0;
        z-index: 100;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }
    
    .chat-sidebar {
        position: absolute;
        right: 0;
        top: 0;
        bottom: 0;
        z-index: 50;
        transform: translateX(0);
        transition: transform 0.3s ease;
    }
    
    .chat-sidebar.hidden {
        transform: translateX(100%);
    }
    
    .messages-container {
        padding: 16px;
    }
    
    .message-bubble {
        max-width: 85%;
    }
}

/* =============================================
   Scrollbar
   ============================================= */
.unx-chat ::-webkit-scrollbar {
    width: 6px;
}

.unx-chat ::-webkit-scrollbar-track {
    background: transparent;
}

.unx-chat ::-webkit-scrollbar-thumb {
    background: var(--win-border);
    border-radius: 3px;
}

.unx-chat ::-webkit-scrollbar-thumb:hover {
    background: var(--win-text-secondary);
}

/* =============================================
   Animations
   ============================================= */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

.message {
    animation: slideUp 0.2s ease;
}

.room-item {
    animation: fadeIn 0.3s ease;
}