/* ========================================
   MESSENGER MODULE - ENTERPRISE STYLES
   Version: 2.0 | Updated: December 2025
   Inspace Furniture Procurement Platform
   ======================================== */

/* ========================================
   CSS Variables & Design Tokens
   ======================================== */
:root {
    /* Primary palette */
    --msg-primary: #3b82f6;
    --msg-primary-dark: #2563eb;
    --msg-primary-light: #60a5fa;
    --msg-secondary: #64748b;
    
    /* Status colors */
    --msg-success: #22c55e;
    --msg-warning: #f59e0b;
    --msg-danger: #ef4444;
    --msg-info: #06b6d4;
    
    /* Dark header gradient (enterprise pattern) */
    --msg-header-gradient: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --msg-header-accent: rgba(59, 130, 246, 0.15);
    
    /* Background colors */
    --msg-bg-primary: #ffffff;
    --msg-bg-secondary: #f8fafc;
    --msg-bg-tertiary: #f1f5f9;
    
    /* Border colors */
    --msg-border-light: #e2e8f0;
    --msg-border-medium: #cbd5e1;
    
    /* Text colors */
    --msg-text-primary: #1e293b;
    --msg-text-secondary: #64748b;
    --msg-text-muted: #94a3b8;
    
    /* Spacing */
    --msg-spacing-xs: 0.25rem;
    --msg-spacing-sm: 0.5rem;
    --msg-spacing-md: 1rem;
    --msg-spacing-lg: 1.5rem;
    --msg-spacing-xl: 2rem;
    --msg-spacing-2xl: 3rem;
    
    /* Typography */
    --msg-font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --msg-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Shadows */
    --msg-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --msg-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --msg-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --msg-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --msg-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border radius */
    --msg-radius-sm: 0.375rem;
    --msg-radius-md: 0.5rem;
    --msg-radius-lg: 0.75rem;
    --msg-radius-xl: 1rem;
    --msg-radius-2xl: 1.5rem;
    --msg-radius-full: 9999px;
    
    /* Transitions */
    --msg-transition-fast: 150ms ease;
    --msg-transition-normal: 200ms ease;
    --msg-transition-slow: 300ms ease;
}

/* ========================================
   Enterprise Page Header
   ======================================== */
.messenger-page-header {
    background: var(--msg-header-gradient);
    border-radius: var(--msg-radius-xl);
    padding: var(--msg-spacing-lg) var(--msg-spacing-xl);
    margin-bottom: var(--msg-spacing-lg);
    position: relative;
    overflow: hidden;
}

.messenger-page-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--msg-header-accent));
    pointer-events: none;
}

.messenger-page-header::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.messenger-header-content {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--msg-spacing-lg);
}

.messenger-header-info {
    flex: 1;
    min-width: 250px;
}

.messenger-header-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 var(--msg-spacing-xs) 0;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: var(--msg-spacing-sm);
}

.messenger-header-title i {
    font-size: 1.5rem;
    opacity: 0.9;
}

.messenger-header-subtitle {
    color: #94a3b8;
    font-size: 0.875rem;
    margin: 0;
}

.messenger-header-meta {
    display: flex;
    gap: var(--msg-spacing-lg);
    margin-top: var(--msg-spacing-md);
    padding-top: var(--msg-spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
}

.messenger-meta-item {
    display: flex;
    align-items: center;
    gap: var(--msg-spacing-sm);
    font-size: 0.8125rem;
    color: #94a3b8;
}

.messenger-meta-item i {
    color: var(--msg-primary-light);
    font-size: 1rem;
}

.messenger-meta-item strong {
    color: #fff;
    font-weight: 600;
}

/* Quick Stats in Header */
.messenger-quick-stats {
    display: flex;
    gap: var(--msg-spacing-lg);
    align-items: center;
}

.messenger-quick-stat {
    text-align: center;
    min-width: 70px;
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--msg-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.messenger-quick-stat-value {
    font-family: var(--msg-font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.messenger-quick-stat-label {
    font-size: 0.625rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--msg-spacing-xs);
}

/* ========================================
   Main Messaging Container
   ======================================== */
.messaging-container {
    height: calc(100vh - 220px);
    min-height: 500px;
    background: var(--msg-bg-primary);
    border-radius: var(--msg-radius-xl);
    box-shadow: var(--msg-shadow-lg);
    overflow: hidden;
    border: 1px solid var(--msg-border-light);
}

/* ========================================
   Conversations Sidebar
   ======================================== */
.conversations-sidebar {
    border-right: 1px solid var(--msg-border-light);
    background: var(--msg-bg-secondary);
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: var(--msg-spacing-md);
    background: var(--msg-bg-primary);
    border-bottom: 1px solid var(--msg-border-light);
}

/* Search Bar */
.messenger-search-bar {
    padding: var(--msg-spacing-md);
    background: var(--msg-bg-primary);
    border-bottom: 1px solid var(--msg-border-light);
}

.messenger-search-input {
    border: 1px solid var(--msg-border-light);
    border-radius: var(--msg-radius-full);
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    font-size: 0.875rem;
    transition: var(--msg-transition-normal);
}

.messenger-search-input:focus {
    border-color: var(--msg-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* New Conversation Button */
.new-conversation-section {
    padding: var(--msg-spacing-md);
    border-bottom: 1px solid var(--msg-border-light);
}

.btn-new-conversation {
    width: 100%;
    background: var(--msg-primary);
    border: none;
    border-radius: var(--msg-radius-md);
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    font-weight: 600;
    transition: var(--msg-transition-normal);
}

.btn-new-conversation:hover {
    background: var(--msg-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--msg-shadow-md);
}

/* Conversations List */
.conversations-list {
    flex: 1;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--msg-border-medium) transparent;
}

.conversations-list::-webkit-scrollbar {
    width: 6px;
}

.conversations-list::-webkit-scrollbar-track {
    background: transparent;
}

.conversations-list::-webkit-scrollbar-thumb {
    background: var(--msg-border-medium);
    border-radius: var(--msg-radius-full);
}

/* Conversation Item */
.conversation-item {
    padding: var(--msg-spacing-md);
    border-bottom: 1px solid var(--msg-border-light);
    cursor: pointer;
    transition: var(--msg-transition-normal);
    position: relative;
}

.conversation-item:hover {
    background: var(--msg-bg-tertiary);
}

.conversation-item.active {
    background: rgba(59, 130, 246, 0.1);
    border-left: 3px solid var(--msg-primary);
}

.conversation-item.unread {
    background: rgba(59, 130, 246, 0.05);
}

.conversation-item.unread::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: var(--msg-primary);
    border-radius: 0 2px 2px 0;
}

/* Conversation Avatar */
.conversation-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--msg-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #fff;
    font-size: 0.875rem;
    flex-shrink: 0;
    position: relative;
}

.conversation-avatar.avatar-project { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.conversation-avatar.avatar-offer { background: linear-gradient(135deg, #f59e0b, #d97706); }
.conversation-avatar.avatar-order { background: linear-gradient(135deg, #22c55e, #16a34a); }
.conversation-avatar.avatar-product { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.conversation-avatar.avatar-general { background: linear-gradient(135deg, #64748b, #475569); }
.conversation-avatar.avatar-manufacturer-quote { background: linear-gradient(135deg, #ec4899, #db2777); }

.online-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    background: var(--msg-success);
    border: 2px solid var(--msg-bg-primary);
    border-radius: var(--msg-radius-full);
}

/* Conversation Info */
.conversation-info {
    flex: 1;
    min-width: 0;
}

.conversation-title {
    font-weight: 600;
    color: var(--msg-text-primary);
    font-size: 0.9375rem;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conversation-time {
    font-size: 0.75rem;
    color: var(--msg-text-muted);
    white-space: nowrap;
}

.conversation-meta {
    display: flex;
    align-items: center;
    gap: var(--msg-spacing-sm);
    margin-top: var(--msg-spacing-xs);
    flex-wrap: wrap;
}

.conversation-preview {
    font-size: 0.8125rem;
    color: var(--msg-text-secondary);
    margin: var(--msg-spacing-xs) 0 0 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

/* Context Badges */
.context-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--msg-radius-sm);
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.context-badge-project { background: #dbeafe; color: #1e40af; }
.context-badge-offer { background: #fef3c7; color: #92400e; }
.context-badge-order { background: #d1fae5; color: #065f46; }
.context-badge-product { background: #ede9fe; color: #5b21b6; }
.context-badge-general { background: #e2e8f0; color: #475569; }
.context-badge-manufacturer-quote { background: #fce7f3; color: #9d174d; }

.context-info {
    font-size: 0.7rem;
    color: var(--msg-text-secondary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

/* Unread Badge */
.unread-badge {
    background: var(--msg-primary);
    color: #fff;
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--msg-radius-full);
    min-width: 20px;
    text-align: center;
}

/* Participant Count */
.participant-count {
    font-size: 0.7rem;
    color: var(--msg-text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

.participant-count i {
    font-size: 0.75rem;
}

/* ========================================
   Message Area
   ======================================== */
.message-area {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--msg-bg-secondary);
}

/* Message Header */
.message-header {
    background: var(--msg-bg-primary);
    border-bottom: 1px solid var(--msg-border-light);
}

/* Mobile row (back button + actions) - only shown on mobile */
.message-header-mobile-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    border-bottom: 1px solid var(--msg-border-light);
    background: var(--msg-bg-secondary);
}

.btn-back-mobile {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--msg-primary);
    background: transparent;
    border: 1px solid var(--msg-primary);
    border-radius: var(--msg-radius-md);
    transition: var(--msg-transition-fast);
}

.btn-back-mobile:hover {
    background: var(--msg-primary);
    color: #fff;
}

.btn-back-mobile i {
    font-size: 0.875rem;
}

.conversation-actions-mobile {
    display: flex;
    gap: 0.25rem;
}

.btn-icon-mobile {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--msg-radius-md);
    background: transparent;
    border: 1px solid var(--msg-border-light);
    color: var(--msg-text-secondary);
    transition: var(--msg-transition-fast);
}

.btn-icon-mobile:hover {
    background: var(--msg-bg-tertiary);
    color: var(--msg-text-primary);
    border-color: var(--msg-border-medium);
}

.btn-icon-mobile i {
    font-size: 1rem;
}

/* Main header content */
.message-header-main {
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--msg-spacing-md);
    width: 100%;
}

.message-header-info {
    display: flex;
    align-items: center;
    gap: var(--msg-spacing-md);
    min-width: 0;
    flex: 1;
}

.message-header-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--msg-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
    background: linear-gradient(135deg, #64748b, #475569); /* Default background */
}

/* Avatar context colors for message header */
.message-header-avatar.avatar-project { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.message-header-avatar.avatar-offer { background: linear-gradient(135deg, #10b981, #059669); }
.message-header-avatar.avatar-order { background: linear-gradient(135deg, #f59e0b, #d97706); }
.message-header-avatar.avatar-product { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.message-header-avatar.avatar-manufacturer-quote { background: linear-gradient(135deg, #ec4899, #db2777); }
.message-header-avatar.avatar-general { background: linear-gradient(135deg, #64748b, #475569); }

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

.message-header-details h5 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--msg-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 350px;
}

.message-header-details small {
    color: var(--msg-text-secondary);
    font-size: 0.8125rem;
}

.conversation-actions {
    display: flex;
    gap: var(--msg-spacing-sm);
}

.conversation-actions .btn {
    padding: var(--msg-spacing-sm);
    border-radius: var(--msg-radius-md);
}

/* ========================================
   Enterprise Message Thread Wrapper
   ======================================== */
.message-thread,
.message-thread-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    padding-bottom: 2rem;
    scrollbar-width: thin;
    scrollbar-color: var(--msg-border-medium) transparent;
}

.message-thread::-webkit-scrollbar,
.message-thread-wrapper::-webkit-scrollbar {
    width: 6px;
}

.message-thread::-webkit-scrollbar-track,
.message-thread-wrapper::-webkit-scrollbar-track {
    background: transparent;
}

.message-thread::-webkit-scrollbar-thumb,
.message-thread-wrapper::-webkit-scrollbar-thumb {
    background: var(--msg-border-medium);
    border-radius: var(--msg-radius-full);
}

/* Message Group - Contains date header + messages */
.message-group {
    margin-bottom: 1.5rem;
}

/* Enterprise Date Badge */
.message-date,
.message-date-separator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1.5rem 0 1rem 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.date-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 1rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.06) 100%);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(59, 130, 246, 0.12);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #64748b;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* Enterprise Message Item */
.message-item {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: flex-start;
    animation: messageSlideIn 0.25s ease-out;
}

.message-item.own {
    flex-direction: row-reverse;
}

@keyframes messageSlideIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Enterprise Message Avatar (supports both class names) */
.message-avatar,
.message-sender-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
    text-transform: uppercase;
}

.message-item.own .message-avatar,
.message-item.own .message-sender-avatar {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.25);
}

/* Enterprise Message Content */
.message-content {
    max-width: 70%;
    min-width: 120px;
    position: relative;
}

/* Enterprise Message Bubble */
.message-bubble {
    background: #ffffff;
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    border-top-left-radius: 0.25rem;
    box-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.06),
        0 1px 2px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    word-wrap: break-word;
}

.message-item.own .message-bubble {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: #fff;
    border: none;
    border-top-left-radius: 1rem;
    border-top-right-radius: 0.25rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* Enterprise Sender Name */
.message-sender {
    font-size: 0.75rem;
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.message-item.own .message-sender {
    color: rgba(255, 255, 255, 0.85);
    justify-content: flex-end;
}

/* Enterprise Message Text */
.message-text {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.55;
    color: #1e293b;
    word-break: break-word;
    white-space: pre-wrap;
}

.message-item.own .message-text {
    color: #ffffff;
}

/* Enterprise Message Time */
.message-time {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    margin-top: 0.375rem;
    font-size: 0.6875rem;
    color: #94a3b8;
}

.message-item.own .message-time {
    justify-content: flex-end;
    color: #64748b;
}

.message-time .read-indicator {
    color: #22c55e;
}

.message-time .read-indicator i {
    font-size: 0.875rem;
}

/* Read Receipt */
.read-receipt {
    display: inline-flex;
    align-items: center;
}

.read-receipt i {
    font-size: 0.875rem;
}

.read-receipt.read {
    color: var(--msg-success);
}

/* ========================================
   Enterprise Attachment Styles
   ======================================== */
.message-attachment {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.03);
    border-radius: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.message-item.own .message-attachment {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.15);
}

.attachment-preview {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.attachment-icon {
    width: 40px;
    height: 40px;
    border-radius: 0.5rem;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 1.125rem;
    flex-shrink: 0;
}

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

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

.attachment-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: #1e293b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.message-item.own .attachment-name {
    color: #fff;
}

.attachment-size {
    font-size: 0.6875rem;
    color: #94a3b8;
}

.message-item.own .attachment-size {
    color: rgba(255, 255, 255, 0.7);
}

.attachment-download {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    transition: all 0.2s ease;
    flex-shrink: 0;
    text-decoration: none;
}

.attachment-download:hover {
    background: #3b82f6;
    color: #fff;
    transform: scale(1.05);
}

.message-item.own .attachment-download {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.message-item.own .attachment-download:hover {
    background: rgba(255, 255, 255, 0.35);
}

/* Image Attachment Preview */
.attachment-image-preview {
    max-width: 280px;
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.attachment-image-preview img {
    width: 100%;
    height: auto;
    display: block;
    cursor: pointer;
    transition: transform 0.2s ease;
}

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

/* Loading Messages Indicator */
.loading-messages-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    color: var(--msg-primary, #3b82f6);
    gap: var(--msg-spacing-md, 1rem);
}

/* Typing Indicator - Above compose area */
.typing-indicator-wrapper {
    padding: var(--msg-spacing-sm, 0.5rem) var(--msg-spacing-lg, 1.5rem);
    background: rgba(59, 130, 246, 0.05);
    border-top: 1px solid rgba(59, 130, 246, 0.1);
    display: none;
}

.typing-indicator-wrapper.visible {
    display: flex;
    align-items: center;
    gap: var(--msg-spacing-sm, 0.5rem);
}

/* ========================================
   Message Compose Area
   ======================================== */ */
.message-compose {
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
    background: var(--msg-bg-primary);
    border-top: 1px solid var(--msg-border-light);
}

.compose-input-group {
    display: flex;
    align-items: flex-end;
    gap: var(--msg-spacing-sm);
    background: var(--msg-bg-secondary);
    border: 1px solid var(--msg-border-light);
    border-radius: var(--msg-radius-xl);
    padding: var(--msg-spacing-xs);
    transition: var(--msg-transition-normal);
}

.compose-input-group:focus-within {
    border-color: var(--msg-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.compose-actions {
    display: flex;
    gap: var(--msg-spacing-xs);
}

.compose-textarea {
    flex: 1;
    border: none;
    background: transparent;
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    resize: none;
    max-height: 120px;
    min-height: 40px;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.compose-textarea:focus {
    outline: none;
}

.compose-textarea::placeholder {
    color: var(--msg-text-muted);
}

.btn-compose {
    width: 40px;
    height: 40px;
    border-radius: var(--msg-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: var(--msg-transition-normal);
}

.btn-compose:hover {
    transform: translateY(-1px);
}

.btn-compose.btn-primary {
    background: var(--msg-primary);
    border: none;
}

.btn-compose.btn-primary:hover {
    background: var(--msg-primary-dark);
}

/* ========================================
   Typing Indicator
   ======================================== */
.typing-indicator {
    padding: var(--msg-spacing-sm) var(--msg-spacing-lg);
    background: rgba(59, 130, 246, 0.05);
    border-top: 1px solid rgba(59, 130, 246, 0.1);
    font-size: 0.8125rem;
    color: var(--msg-primary);
    display: none;
}

.typing-indicator.visible {
    display: flex;
    align-items: center;
    gap: var(--msg-spacing-sm);
}

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

.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--msg-primary);
    border-radius: var(--msg-radius-full);
    animation: typingBounce 1.4s infinite both;
}

.typing-dot:nth-child(2) { animation-delay: 0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0.32s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-8px); }
}

/* ========================================
   Enterprise Empty State
   ======================================== */
.empty-conversation {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 300px;
    padding: 2rem;
    text-align: center;
}

.empty-conversation-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.08) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.empty-conversation-icon i,
.empty-conversation > i {
    font-size: 1.75rem;
    color: #3b82f6;
}

/* Legacy support for direct i element */
.empty-conversation > i:first-child {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.08) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.75rem;
    color: #3b82f6;
    opacity: 1;
}

.empty-conversation h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.empty-conversation p {
    font-size: 0.875rem;
    color: #64748b;
    max-width: 280px;
}

.empty-conversation a {
    color: #3b82f6;
    font-weight: 500;
    text-decoration: none;
}

.empty-conversation a:hover {
    text-decoration: underline;
}

/* ========================================
   Loading States
   ======================================== */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--msg-spacing-xl);
}

.skeleton-conversation {
    padding: var(--msg-spacing-md);
    border-bottom: 1px solid var(--msg-border-light);
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--msg-radius-full);
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s infinite;
}

.skeleton-text {
    height: 12px;
    border-radius: var(--msg-radius-sm);
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s infinite;
}

.skeleton-text.short { width: 60%; }
.skeleton-text.medium { width: 80%; }
.skeleton-text.full { width: 100%; }

@keyframes skeletonLoading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   Attachment Styles
   ======================================== */
.attachment-simple {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--msg-border-light);
    border-radius: var(--msg-radius-md);
    padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    margin-top: var(--msg-spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--msg-spacing-sm);
    transition: var(--msg-transition-normal);
}

.attachment-simple:hover {
    box-shadow: var(--msg-shadow-sm);
    border-color: var(--msg-border-medium);
}

.message-item.own .attachment-simple {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.attachment-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--msg-radius-md);
    background: var(--msg-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--msg-primary);
}

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

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

.attachment-name {
    font-weight: 500;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.attachment-size {
    font-size: 0.75rem;
    color: var(--msg-text-muted);
}

.message-item.own .attachment-size {
    color: rgba(255, 255, 255, 0.7);
}

.attachment-download-btn {
    padding: var(--msg-spacing-xs) var(--msg-spacing-sm);
    border-radius: var(--msg-radius-sm);
    transition: var(--msg-transition-normal);
}

.attachment-download-btn:hover {
    background: var(--msg-primary);
    color: #fff;
}

/* Image Preview */
.message-image-preview {
    max-width: 280px;
    max-height: 200px;
    border-radius: var(--msg-radius-md);
    cursor: pointer;
    transition: var(--msg-transition-normal);
    border: 2px solid var(--msg-border-light);
}

.message-image-preview:hover {
    transform: scale(1.02);
    box-shadow: var(--msg-shadow-md);
    border-color: var(--msg-primary);
}

/* File Upload Area */
.file-upload-area {
    border: 2px dashed var(--msg-border-medium);
    border-radius: var(--msg-radius-lg);
    padding: var(--msg-spacing-lg);
    text-align: center;
    background: var(--msg-bg-secondary);
    transition: var(--msg-transition-normal);
}

.file-upload-area.drag-over {
    border-color: var(--msg-primary);
    background: rgba(59, 130, 246, 0.05);
}

.file-upload-area i {
    font-size: 2rem;
    color: var(--msg-text-muted);
    margin-bottom: var(--msg-spacing-sm);
}

/* ========================================
   Search Highlight
   ======================================== */
.search-highlight {
    background-color: #fff3cd !important;
    border-left: 3px solid #ffc107 !important;
    padding-left: var(--msg-spacing-sm) !important;
    animation: highlightPulse 0.5s ease-in-out;
}

@keyframes highlightPulse {
    0%, 100% { background-color: #fff3cd; }
    50% { background-color: #ffe69c; }
}

/* ========================================
   Modal Enhancements
   ======================================== */
.modal-content {
    border-radius: var(--msg-radius-lg);
    border: none;
    box-shadow: var(--msg-shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--msg-border-light);
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
}

.modal-body {
    padding: var(--msg-spacing-lg);
}

.modal-footer {
    border-top: 1px solid var(--msg-border-light);
    padding: var(--msg-spacing-md) var(--msg-spacing-lg);
}

/* ========================================
   Back Button (Conversation View)
   ======================================== */
.back-button {
    position: fixed;
    top: 100px;
    left: 20px;
    z-index: 1000;
    background: var(--msg-bg-primary);
    border: 2px solid var(--msg-primary);
    color: var(--msg-primary);
    width: 44px;
    height: 44px;
    border-radius: var(--msg-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--msg-shadow-lg);
    transition: var(--msg-transition-normal);
}

.back-button:hover {
    background: var(--msg-primary);
    color: #fff;
    transform: translateY(-2px);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
    .messenger-page-header {
        padding: var(--msg-spacing-md);
        border-radius: var(--msg-radius-md);
    }
    
    .messenger-header-title {
        font-size: 1.5rem;
    }
    
    .messenger-quick-stats {
        display: none;
    }
}

/* Mobile sidebar breakpoint - matches Bootstrap lg (992px) */
@media (max-width: 991.98px) {
    .messenger-page-header {
        border-radius: 0;
        margin-left: -12px;
        margin-right: -12px;
        margin-top: -12px;
    }
    
    .messaging-container {
        height: calc(100vh - 200px);
        border-radius: var(--msg-radius-md);
    }
    
    .conversations-sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        bottom: 0;
        width: 85%;
        max-width: 360px;
        z-index: 1050;
        transition: left 0.3s ease;
        box-shadow: var(--msg-shadow-xl);
        background: var(--msg-bg-primary);
        padding-top: 60px; /* Account for navbar */
    }
    
    .conversations-sidebar.show {
        left: 0;
    }
    
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1040;
        opacity: 0;
        visibility: hidden;
        transition: var(--msg-transition-normal);
    }
    
    .sidebar-overlay.show {
        opacity: 1;
        visibility: visible;
    }
    
    /* Hide sidebar on mobile by default, show message area */
    .message-area {
        width: 100%;
        max-width: 100%;
        flex: 1;
        display: flex;
        flex-direction: column;
        height: 100%;
        position: relative;
    }
    
    .message-header{
        flex-direction: column;
    }

    /* Mobile header adjustments */
    .message-header-main {
        padding: var(--msg-spacing-sm) var(--msg-spacing-md);
    }
    
    .message-header-avatar {
        width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }
    
    .message-header-details h5 {
        font-size: 0.9375rem;
        max-width: calc(100vw - 200px);
    }
    
    .message-header-details small {
        font-size: 0.75rem;
    }
    
    /* Message thread takes remaining space */
    .message-thread {
        flex: 1;
        overflow-y: auto;
        padding: var(--msg-spacing-md);
        /* padding-bottom: 100px;  Space for sticky compose */
    }
    
    .message-content {
        max-width: 85%;
    }
    
    /* STICKY MESSAGE COMPOSE ON MOBILE */
    .message-compose {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        padding: var(--msg-spacing-sm) var(--msg-spacing-md);
        background: var(--msg-bg-primary);
        border-top: 1px solid var(--msg-border-light);
        z-index: 100;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    }
    
    .compose-input-group {
        padding: var(--msg-spacing-xs);
    }
    
    .compose-textarea {
        font-size: 1rem;
        padding: var(--msg-spacing-sm);
    }
    
    .btn-compose {
        width: 38px;
        height: 38px;
    }
    
    .back-button {
        top: 80px;
        left: 12px;
        width: 40px;
        height: 40px;
    }
    
    .context-info {
        max-width: 100px;
    }
    
    /* Empty state adjustments */
    .empty-conversation {
        padding-bottom: 100px;
        min-height: 200px;
    }
    
    .empty-conversation-icon {
        width: 56px;
        height: 56px;
    }
    
    .empty-conversation-icon i,
    .empty-conversation > i:first-child {
        font-size: 1.5rem;
    }
    
    .empty-conversation h4 {
        font-size: 0.9375rem;
    }
    
    .empty-conversation p {
        font-size: 0.8125rem;
        max-width: 240px;
    }
    
    /* Message bubble mobile adjustments */
    .message-bubble {
        padding: 0.625rem 0.875rem;
    }
    
    .message-sender-avatar,
    .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 0.6875rem;
    }
}

@media (max-width: 576px) {
    .messenger-header-meta {
        flex-direction: column;
        gap: var(--msg-spacing-sm);
    }
    
    .conversation-item {
        padding: var(--msg-spacing-sm);
    }
    
    .conversation-avatar {
        width: 40px;
        height: 40px;
    }
    
    .conversation-title {
        font-size: 0.875rem;
    }
    
    /* Extra small mobile header */
    .message-header-details h5 {
        max-width: calc(100vw - 160px);
        font-size: 0.85rem;
    }
    
    .message-header-avatar {
        width: 36px;
        height: 36px;
    }
    
    .btn-icon-mobile {
        width: 32px;
        height: 32px;
    }
    
    .btn-icon-mobile i {
        font-size: 0.875rem;
    }
    
    .btn-back-mobile {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
    
    /* Compose adjustments for small screens */
    .message-compose {
        padding: var(--msg-spacing-xs) var(--msg-spacing-sm);
    }
    
    .btn-compose {
        width: 36px;
        height: 36px;
    }
}

/* ========================================
   Conversation View Page Styles
   ======================================== */
.conversation-view-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 250px); /* Adjust for header */
    min-height: 500px;
}

.messages-view-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--msg-bg-primary);
    border-radius: var(--msg-radius-xl);
    box-shadow: var(--msg-shadow-lg);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

/* Sticky compose area wrapper */
.compose-area-sticky {
    position: sticky;
    bottom: 0;
    background: var(--msg-bg-primary);
    border-radius: 0 0 var(--msg-radius-xl) var(--msg-radius-xl);
}

/* Mobile back button in header */
.back-btn-mobile {
    display: none;
}

@media (max-width: 991.98px) {
    .conversation-view-container {
        height: calc(100vh - 200px);
    }
    
    .back-btn-mobile {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: var(--msg-radius-md);
        color: #fff;
        transition: var(--msg-transition-fast);
    }
    
    .back-btn-mobile:hover {
        background: rgba(255, 255, 255, 0.2);
        color: #fff;
        text-decoration: none;
    }
    
    .messages-view-container {
        margin-bottom: 80px; /* Space for sticky compose */
        border-radius: var(--msg-radius-lg);
    }
    
    .compose-area-sticky {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        border-radius: 0;
        z-index: 100;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    }
}

@media (max-width: 576px) {
    .conversation-view-container {
        height: calc(100vh - 160px);
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .messenger-page-header,
    .conversations-sidebar,
    .message-compose,
    .conversation-actions,
    .back-button {
        display: none !important;
    }
    
    .messaging-container {
        height: auto;
        box-shadow: none;
        border: none;
    }
    
    .message-thread {
        overflow: visible;
    }
}