/* Facebook Messenger-Style Chat Interface */

.messenger-chat-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: #ffffff;
    position: relative;
}

.messenger-header {
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.messenger-header .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.messenger-header .user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #007bff, #0056b3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    font-weight: 600;
}

.messenger-header .user-details h6 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #050505;
}

.messenger-header .user-details small {
    color: #65676b;
    font-size: 13px;
}

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

.messenger-header .action-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #f0f2f5;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1c1e21;
    transition: all 0.2s ease;
}

.messenger-header .action-btn:hover {
    background: #e4e6ea;
}

.messenger-messages {
    flex: 1;
    overflow-y: auto;
    padding: 8px 12px;
    background: #ffffff;
    scroll-behavior: smooth;
    height: calc(100vh - 140px);
    min-height: 0;
    -webkit-overflow-scrolling: touch;
}

.messenger-message {
    display: flex;
    margin-bottom: 4px;
    align-items: flex-end;
}

.messenger-message.sent {
    justify-content: flex-end;
}

.messenger-message.received {
    justify-content: flex-start;
}

.message-bubble {
    max-width: 60%;
    padding: 8px 12px;
    border-radius: 18px;
    position: relative;
    word-wrap: break-word;
    line-height: 1.4;
    font-size: 15px;
}

.messenger-message.sent .message-bubble {
    background: #0084ff;
    color: white;
    border-bottom-right-radius: 4px;
    margin-left: auto;
}

.messenger-message.received .message-bubble {
    background: #f0f0f0;
    color: #050505;
    border-bottom-left-radius: 4px;
    margin-right: auto;
}

.message-timestamp {
    font-size: 11px;
    color: #65676b;
    margin-top: 4px;
    text-align: center;
}

.messenger-message.sent .message-timestamp {
    text-align: right;
}

.messenger-message.received .message-timestamp {
    text-align: left;
}

.messenger-input-area {
    background: #ffffff;
    border-top: 1px solid #e5e5e5;
    padding: 12px 16px;
    position: sticky;
    bottom: 0;
    z-index: 100;
    flex-shrink: 0;
    min-height: 80px;
}

.messenger-input-container {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: #f0f2f5;
    border-radius: 20px;
    padding: 6px 8px;
    transition: all 0.2s ease;
}

.messenger-input-container:focus-within {
    background: #e4e6ea;
}

.messenger-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 6px 12px;
    border-radius: 18px;
    resize: none;
    outline: none;
    font-size: 15px;
    line-height: 1.4;
    color: #050505;
    min-height: 20px;
    max-height: 100px;
}

.messenger-input::placeholder {
    color: #65676b;
}

.messenger-action-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0084ff;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.messenger-action-btn:hover {
    background: rgba(0, 132, 255, 0.1);
}

.messenger-send-btn {
    background: #0084ff;
    color: white;
}

.messenger-send-btn:hover {
    background: #0073e6;
}

.messenger-send-btn:disabled {
    background: #bcc0c4;
    cursor: not-allowed;
}

/* Message grouping for consecutive messages */
.messenger-message.consecutive {
    margin-bottom: 0px;
}

.messenger-message.consecutive .message-bubble {
    border-radius: 18px;
}

.messenger-message.sent.consecutive .message-bubble {
    border-bottom-right-radius: 18px;
    border-top-right-radius: 4px;
}

.messenger-message.received.consecutive .message-bubble {
    border-bottom-left-radius: 18px;
    border-top-left-radius: 4px;
}

.messenger-message.first-in-group .message-bubble {
    margin-top: 2px;
}

/* File attachments in Messenger style */
.messenger-file-attachment {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    padding: 12px;
    margin: 4px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 280px;
}

.messenger-message.sent .messenger-file-attachment {
    background: rgba(255, 255, 255, 0.2);
}

.messenger-file-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: #0084ff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

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

.messenger-file-name {
    font-weight: 600;
    font-size: 14px;
    color: inherit;
    text-decoration: none;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.messenger-file-size {
    font-size: 12px;
    color: #65676b;
    margin-top: 2px;
}

.messenger-message.sent .messenger-file-size {
    color: rgba(255, 255, 255, 0.8);
}

/* Images in Messenger style */
.messenger-image {
    border-radius: 12px;
    max-width: 250px;
    max-height: 300px;
    object-fit: cover;
    cursor: pointer;
    margin: 4px 0;
}

/* Typing indicator */
.messenger-typing {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    color: #65676b;
    font-size: 14px;
}

.messenger-typing-dots {
    display: flex;
    gap: 2px;
}

.messenger-typing-dot {
    width: 6px;
    height: 6px;
    background: #65676b;
    border-radius: 50%;
    animation: typing-bounce 1.4s infinite ease-in-out;
}

.messenger-typing-dot:nth-child(1) { animation-delay: -0.32s; }
.messenger-typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing-bounce {
    0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* Mobile optimizations for Messenger style */
@media (max-width: 768px) {
    .messenger-chat-container {
        height: calc(100vh - 60px); /* Account for mobile bottom nav */
    }
    
    .message-bubble {
        max-width: 75%;
        font-size: 16px; /* Better for mobile readability */
    }
    
    .messenger-input {
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    .messenger-header {
        padding: 8px 12px;
    }
    
    .messenger-input-area {
        padding: 8px 12px;
    }
}

/* Dark mode support (matches VYRECRYPT theme) */
@media (prefers-color-scheme: dark) {
    .messenger-chat-container {
        background: #1a1a1a;
    }
    
    .messenger-header {
        background: #2a2a2a;
        border-bottom-color: #404040;
        color: white;
    }
    
    .messenger-header .user-details h6 {
        color: white;
    }
    
    .messenger-header .user-details small {
        color: #b0b3b8;
    }
    
    .messenger-header .action-btn {
        background: #3a3b3c;
        color: #e4e6ea;
    }
    
    .messenger-header .action-btn:hover {
        background: #4e4f50;
    }
    
    .messenger-messages {
        background: #1a1a1a;
    }
    
    .messenger-message.received .message-bubble {
        background: #3a3b3c;
        color: #e4e6ea;
    }
    
    .message-timestamp {
        color: #b0b3b8;
    }
    
    .messenger-input-area {
        background: #2a2a2a;
        border-top-color: #404040;
    }
    
    .messenger-input-container {
        background: #3a3b3c;
    }
    
    .messenger-input-container:focus-within {
        background: #4e4f50;
    }
    
    .messenger-input {
        color: #e4e6ea;
    }
    
    .messenger-input::placeholder {
        color: #b0b3b8;
    }
}

/* Smooth animations */
.messenger-message {
    animation: fadeInUp 0.3s ease-out;
}

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

/* Scrollbar styling for Messenger */
.messenger-messages::-webkit-scrollbar {
    width: 6px;
}

.messenger-messages::-webkit-scrollbar-track {
    background: transparent;
}

.messenger-messages::-webkit-scrollbar-thumb {
    background: #bcc0c4;
    border-radius: 3px;
}

.messenger-messages::-webkit-scrollbar-thumb:hover {
    background: #8a8d91;
}