/* ========================================
   VIBER-STYLE CHAT ROOM DESIGN
======================================== */

/* Chat Container Base Styles */
.chat-container {
    border-radius: 12px !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
    overflow: hidden !important;
    border: none !important;
}

.chat-header {
    border-radius: 12px 12px 0 0 !important;
    padding: 1rem !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2) !important;
}

.chat-header h5 {
    font-weight: 600 !important;
    font-size: 1.1rem !important;
}

.chat-controls .badge {
    border-radius: 20px !important;
    padding: 0.4rem 0.8rem !important;
    font-size: 0.8rem !important;
}

.chat-controls .btn {
    border-radius: 20px !important;
    padding: 0.4rem 0.8rem !important;
    font-size: 0.8rem !important;
    transition: all 0.3s ease !important;
}

.chat-controls .btn:hover {
    background-color: rgba(255, 255, 255, 0.2) !important;
    transform: translateY(-1px) !important;
}

/* Messages Container */
#messages-container {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%) !important;
    scrollbar-width: thin !important;
    scrollbar-color: #cbd5e0 transparent !important;
}

#messages-container::-webkit-scrollbar {
    width: 6px !important;
}

#messages-container::-webkit-scrollbar-track {
    background: transparent !important;
}

#messages-container::-webkit-scrollbar-thumb {
    background-color: #cbd5e0 !important;
    border-radius: 3px !important;
}

#messages-container::-webkit-scrollbar-thumb:hover {
    background-color: #a0aec0 !important;
}

/* Message Bubbles */
.message {
    margin-bottom: 1rem !important;
    padding: 0 0.5rem !important;
}

.message-bubble {
    background: #ffffff !important;
    border-radius: 18px !important;
    padding: 0.8rem 1rem !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
    border: 1px solid #e9ecef !important;
    max-width: 80% !important;
    margin-left: 0 !important;
    transition: all 0.3s ease !important;
}

.message-bubble:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
    transform: translateY(-1px) !important;
}

.message-bubble.own {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%) !important;
    color: white !important;
    margin-left: auto !important;
    margin-right: 0 !important;
    border: 1px solid #0056b3 !important;
}

.message-bubble.own .message-author {
    color: rgba(255, 255, 255, 0.9) !important;
}

.message-bubble.own .message-time {
    color: rgba(255, 255, 255, 0.7) !important;
}

/* Message Header */
.message-header {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    margin-bottom: 0.5rem !important;
}

.message-avatar .avatar-circle {
    width: 32px !important;
    height: 32px !important;
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%) !important;
    color: white !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: 600 !important;
    font-size: 0.8rem !important;
    border: 2px solid #ffffff !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

.message-avatar .avatar-img {
    width: 32px !important;
    height: 32px !important;
    border-radius: 50% !important;
    object-fit: cover !important;
    border: 2px solid #ffffff !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

.message-bubble.own .avatar-circle {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%) !important;
    color: #007bff !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
}

.message-author {
    font-weight: 600 !important;
    font-size: 0.85rem !important;
    color: #495057 !important;
}

.message-time {
    font-size: 0.75rem !important;
    color: #6c757d !important;
}

/* Message Content */
.message-content {
    font-size: 0.9rem !important;
    line-height: 1.4 !important;
    color: #495057 !important;
}

.message-bubble.own .message-content {
    color: white !important;
}

/* Reply Indicator */
.reply-indicator {
    background: rgba(0, 123, 255, 0.1) !important;
    border-left: 3px solid #007bff !important;
    padding: 0.5rem !important;
    border-radius: 0 8px 8px 0 !important;
    margin-bottom: 0.5rem !important;
}

.message-bubble.own .reply-indicator {
    background: rgba(255, 255, 255, 0.2) !important;
    border-left-color: rgba(255, 255, 255, 0.5) !important;
}

/* Message Input Area */
.card-footer {
    background: #ffffff !important;
    border-top: 1px solid #e9ecef !important;
    padding: 1rem !important;
    border-radius: 0 0 12px 12px !important;
}

#message-input {
    border-radius: 20px !important;
    border: 1px solid #dee2e6 !important;
    padding: 0.6rem 1rem !important;
    font-size: 0.9rem !important;
    background-color: #f8f9fa !important;
    transition: all 0.3s ease !important;
}

#message-input:focus {
    border-color: #007bff !important;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.15) !important;
    background-color: #ffffff !important;
}

#emoji-btn {
    border-radius: 0 20px 20px 0 !important;
    border-left: none !important;
    background-color: #f8f9fa !important;
    border-color: #dee2e6 !important;
    transition: all 0.3s ease !important;
}

#emoji-btn:hover {
    background-color: #e9ecef !important;
    transform: scale(1.05) !important;
}

#send-btn {
    border-radius: 50% !important;
    width: 40px !important;
    height: 40px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin-left: 0.5rem !important;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%) !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.3) !important;
    transition: all 0.3s ease !important;
}

#send-btn:hover {
    transform: translateY(-2px) scale(1.05) !important;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4) !important;
}

#send-btn:active {
    transform: translateY(0) scale(1.02) !important;
}

/* Participants Sidebar */
.chat-container + div .card {
    border-radius: 12px !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
    border: none !important;
}

.chat-container + div .card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%) !important;
    border-radius: 12px 12px 0 0 !important;
    border-bottom: 1px solid #dee2e6 !important;
    padding: 1rem !important;
}

.chat-container + div .card-body {
    padding: 0.5rem !important;
    background: #ffffff !important;
}

/* Participant Items */
.participant-item {
    display: flex !important;
    align-items: center !important;
    padding: 0.6rem 1rem !important;
    border-radius: 8px !important;
    margin-bottom: 0.3rem !important;
    transition: all 0.2s ease !important;
    border: 1px solid transparent !important;
}

.participant-item:hover {
    background: rgba(0, 123, 255, 0.05) !important;
    border-color: rgba(0, 123, 255, 0.1) !important;
}

.participant-avatar {
    width: 32px !important;
    height: 32px !important;
    margin-right: 0.75rem !important;
    position: relative !important;
}

.participant-avatar .avatar-img-sm {
    width: 32px !important;
    height: 32px !important;
    border-radius: 50% !important;
    object-fit: cover !important;
    border: 2px solid #ffffff !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

.participant-avatar .participant-fallback {
    width: 32px !important;
    height: 32px !important;
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%) !important;
    color: white !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: 600 !important;
    font-size: 0.8rem !important;
    border: 2px solid #ffffff !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

.participant-info {
    flex: 1 !important;
    min-width: 0 !important;
}

.participant-name {
    font-weight: 500 !important;
    font-size: 0.85rem !important;
    margin-bottom: 0.2rem !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
}

.participant-status {
    font-size: 0.75rem !important;
    color: #6c757d !important;
    display: flex !important;
    align-items: center !important;
}

.participant-actions {
    display: flex !important;
    align-items: center !important;
}

.online-indicator {
    width: 8px !important;
    height: 8px !important;
    background: #28a745 !important;
    border-radius: 50% !important;
    border: 2px solid #ffffff !important;
    box-shadow: 0 0 0 1px #28a745 !important;
}

/* Typing Indicator */
.typing-indicator {
    padding: 0.5rem 1rem !important;
    background: rgba(108, 117, 125, 0.1) !important;
    border-radius: 15px !important;
    margin: 0.5rem !important;
    display: none !important;
}

.typing-indicator.show {
    display: inline-block !important;
}

/* Reply Preview */
.reply-preview {
    background: rgba(0, 123, 255, 0.1) !important;
    border-left: 3px solid #007bff !important;
    padding: 0.5rem !important;
    border-radius: 0 8px 8px 0 !important;
    margin-bottom: 0.5rem !important;
}

/* ========================================
   MOBILE RESPONSIVE STYLES (< 768px)
======================================== */

@media (max-width: 767.98px) {

    /* Full Screen Chat on Mobile */
    .container-fluid {
        padding: 0 !important;
    }

    .chat-container {
        height: auto !important;
        min-height: calc(100vh - 120px) !important;
        border-radius: 0 !important;
        margin: 0 !important;
        box-shadow: none !important;
        display: flex !important;
        flex-direction: column !important;
    }

    /* Ensure proper scrolling behavior */
    body {
        overflow-x: hidden !important;
    }

    .row.no-gutters {
        margin: 0 !important;
        height: auto !important;
    }

    .chat-header {
        border-radius: 0 !important;
        padding: 0.8rem 1rem !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 100 !important;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1) !important;
    }

    .chat-info h5 {
        font-size: 1rem !important;
    }

    .chat-info small {
        font-size: 0.75rem !important;
    }

    .chat-controls {
        display: flex !important;
        flex-direction: column !important;
        align-items: flex-end !important;
        gap: 0.3rem !important;
    }

    .chat-controls .badge {
        font-size: 0.7rem !important;
        padding: 0.2rem 0.5rem !important;
    }

    .chat-controls .btn {
        font-size: 0.75rem !important;
        padding: 0.3rem 0.6rem !important;
    }

    .chat-controls .btn span {
        display: none !important;
    }

    /* Hide Participants Sidebar on Mobile */
    .col-lg-3.col-md-4 {
        display: none !important;
    }

    .col-lg-9.col-md-8 {
        flex: 0 0 100% !important;
        max-width: 100% !important;
    }

    /* Mobile FAB for participants */
    .mobile-participants-fab {
        position: fixed !important;
        bottom: 80px !important;
        right: 20px !important;
        width: 50px !important;
        height: 50px !important;
        border-radius: 50% !important;
        background: linear-gradient(135deg, #007bff 0%, #0056b3 100%) !important;
        color: white !important;
        border: none !important;
        box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4) !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        z-index: 999 !important;
        transition: all 0.3s ease !important;
    }

    .mobile-participants-fab:hover {
        transform: scale(1.1) !important;
        box-shadow: 0 6px 16px rgba(0, 123, 255, 0.5) !important;
    }

    /* Mobile participants modal */
    .mobile-participants-modal {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        background: rgba(0, 0, 0, 0.5) !important;
        z-index: 1050 !important;
        display: none !important;
    }

    .mobile-participants-content {
        position: absolute !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        background: white !important;
        border-radius: 20px 20px 0 0 !important;
        max-height: 60vh !important;
        overflow-y: auto !important;
        padding: 1rem !important;
        animation: slideUp 0.3s ease-out !important;
    }

    @keyframes slideUp {
        from {
            transform: translateY(100%);
        }
        to {
            transform: translateY(0);
        }
    }

    /* Messages Container Mobile */
    #messages-container {
        height: auto !important;
        min-height: 60vh !important;
        max-height: calc(100vh - 200px) !important;
        padding: 0.5rem !important;
        flex: 1 !important;
        overflow-y: auto !important;
    }

    /* Message Bubbles Mobile */
    .message-bubble {
        max-width: 85% !important;
        padding: 0.6rem 0.8rem !important;
        border-radius: 16px !important;
        font-size: 0.85rem !important;
    }

    .message-header {
        margin-bottom: 0.3rem !important;
    }

    .message-avatar .avatar-circle {
        width: 28px !important;
        height: 28px !important;
        font-size: 0.7rem !important;
    }

    .message-avatar .avatar-img {
        width: 28px !important;
        height: 28px !important;
    }

    .message-author {
        font-size: 0.8rem !important;
    }

    .message-time {
        font-size: 0.7rem !important;
    }

    .message-content {
        font-size: 0.85rem !important;
    }

    /* Message Input Mobile */
    .card-footer {
        position: relative !important;
        bottom: auto !important;
        border-radius: 0 !important;
        padding: 0.8rem !important;
        background: #ffffff !important;
        border-top: 2px solid #e9ecef !important;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1) !important;
        z-index: 10 !important;
    }

    #message-input {
        padding: 0.5rem 0.8rem !important;
        font-size: 0.85rem !important;
    }

    #send-btn {
        width: 36px !important;
        height: 36px !important;
    }

    #emoji-btn {
        padding: 0.5rem !important;
    }

    /* Handle Keyboard Opening */
    body.keyboard-open {
        height: auto !important;
        overflow: visible !important;
    }

    body.keyboard-open .card-footer {
        position: relative !important;
        bottom: auto !important;
        left: auto !important;
        right: auto !important;
        z-index: 10 !important;
        margin: 0 !important;
    }

    /* Reply Preview Mobile */
    .reply-preview {
        padding: 0.4rem !important;
        font-size: 0.8rem !important;
    }

    /* Typing Indicator Mobile */
    .typing-indicator {
        padding: 0.4rem 0.8rem !important;
        font-size: 0.8rem !important;
    }
}

/* ========================================
   VERY SMALL SCREENS (< 576px)
======================================== */

@media (max-width: 575.98px) {

    .chat-header {
        padding: 0.6rem 0.8rem !important;
    }

    .chat-header h5 {
        font-size: 0.9rem !important;
    }

    .chat-header small {
        font-size: 0.7rem !important;
    }

    .message-bubble {
        max-width: 90% !important;
        padding: 0.5rem 0.7rem !important;
        font-size: 0.8rem !important;
    }

    .message-avatar .avatar-circle {
        width: 24px !important;
        height: 24px !important;
        font-size: 0.65rem !important;
    }

    .message-avatar .avatar-img {
        width: 24px !important;
        height: 24px !important;
    }

    .message-author {
        font-size: 0.75rem !important;
    }

    .message-time {
        font-size: 0.65rem !important;
    }

    .message-content {
        font-size: 0.8rem !important;
    }

    #message-input {
        padding: 0.4rem 0.7rem !important;
        font-size: 0.8rem !important;
    }

    #send-btn {
        width: 32px !important;
        height: 32px !important;
    }

    #emoji-btn {
        padding: 0.4rem !important;
    }
}

/* ========================================
   CHAT ANIMATIONS & EFFECTS
======================================== */

/* Message Fade-in Animation */
@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message {
    animation: messageSlideIn 0.3s ease-out !important;
}

/* Typing Animation */
@keyframes typingDots {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

.typing-indicator .fa-circle-notch {
    animation: typingDots 1.4s infinite ease-in-out !important;
}

/* Hover Effects */
.message-bubble:hover .message-actions {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.message-actions {
    opacity: 0 !important;
    transform: translateY(5px) !important;
    transition: all 0.3s ease !important;
}

/* Focus States for Accessibility */
#message-input:focus,
#emoji-btn:focus,
#send-btn:focus {
    outline: none !important;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25) !important;
}

/* Dark Mode Support (Future Enhancement) */
@media (prefers-color-scheme: dark) {
    #messages-container {
        background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%) !important;
    }

    .message-bubble {
        background: #3a4a5c !important;
        color: #ffffff !important;
        border-color: #4a5a6c !important;
    }

    .message-bubble.own {
        background: linear-gradient(135deg, #007bff 0%, #0056b3 100%) !important;
    }

    .card-footer {
        background: #2c3e50 !important;
        border-color: #4a5a6c !important;
    }

    #message-input {
        background-color: #3a4a5c !important;
        color: #ffffff !important;
        border-color: #4a5a6c !important;
    }
}