/* Messages Interface Styles */
.messages-container {
    height: calc(100vh - 140px);
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.messages-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    height: 100%;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: visible;
    min-height: 600px;
    max-height: calc(100vh - 140px);
}

/* Conversations Sidebar */
.conversations-sidebar {
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: scroll;
}

.conversations-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.conversations-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.btn-new-message {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Search Conversations */
.search-conversations {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.search-input {
    position: relative;
}

.search-input i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

.search-input input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    transition: var(--transition);
}

.search-input input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Conversation Filters */
.conversation-filters {
    display: flex;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    gap: 0.5rem;
}

.filter-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover {
    background: var(--gray-100);
}

.filter-btn.active {
    background: var(--primary);
    color: var(--white);
}

.filter-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.125rem 0.5rem;
    border-radius: 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.filter-btn:not(.active) .filter-count {
    background: var(--gray-200);
    color: var(--gray-600);
}

/* Conversations List */
.conversations-list {
    flex: 1;
    overflow-y: auto;
}

.conversation-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--gray-100);
    position: relative;
    min-height: 80px;
}

.conversation-item:hover {
    background: var(--gray-50);
}

.conversation-item.active {
    background: var(--primary);
    color: var(--white);
}

.conversation-item.active .conversation-name,
.conversation-item.active .last-message,
.conversation-item.active .conversation-time {
    color: var(--white);
}

.conversation-item.unread {
    font-weight: 600;
}

.conversation-item.unread::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary);
}

.conversation-avatar {
    position: relative;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.conversation-avatar img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.avatar-placeholder {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
    font-size: 1.25rem;
}

.status-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--white);
}

.status-indicator.online {
    background: var(--success);
}

.status-indicator.away {
    background: var(--warning);
}

.status-indicator.offline {
    background: var(--gray-400);
}

.conversation-info {
    flex: 1;
    min-width: 0;
    margin-top: 0.25rem;
}

.conversation-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    width: 100%;
}

.conversation-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.conversation-time {
    font-size: 0.75rem;
    color: var(--gray-500);
    white-space: nowrap;
    flex-shrink: 0;
}

.conversation-preview {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    width: 100%;
}

.conversation-type {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.last-message {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    line-height: 1.4;
    max-height: 2.8em;
}

.conversation-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.unread-count {
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 0.75rem;
    min-width: 1.25rem;
    text-align: center;
}

.conversation-star {
    color: var(--warning);
    font-size: 0.875rem;
}

.message-read {
    color: var(--primary);
    font-size: 0.875rem;
}

/* Chat Area */
.chat-area {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 500px;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.chat-user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chat-avatar {
    position: relative;
}

.chat-avatar img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.chat-user-details h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0 0 0.25rem 0;
}

.chat-user-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.user-status {
    color: var(--success);
    font-weight: 500;
}

.separator {
    color: var(--gray-300);
}

.mission-ref {
    color: var(--primary);
    font-weight: 500;
}

.chat-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-chat-action {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100);
    color: var(--gray-600);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-chat-action:hover {
    background: var(--primary);
    color: var(--white);
}

/* Messages Area */
.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 2rem;
    scroll-behavior: smooth;
    min-height: 300px;
}

.date-separator {
    text-align: center;
    margin: 2rem 0;
    position: relative;
}

.date-separator::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gray-200);
}

.date-separator span {
    background: var(--white);
    color: var(--gray-500);
    padding: 0 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.message {
    display: flex;
    margin-bottom: 1.5rem;
    align-items: flex-end;
}

.message.sent {
    flex-direction: row-reverse;
}

.message.system-message {
    justify-content: center;
    margin: 1rem 0;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin: 0 0.75rem 0.25rem 0;
}

.message.sent .message-avatar {
    margin: 0 0 0.25rem 0.75rem;
}

.message-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.message-content {
    max-width: 70%;
    min-width: 100px;
}

.message.sent .message-content {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.25rem;
}

.sender-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
}

.message-text {
    background: var(--white);
    border: 2px solid var(--gray-200);
    padding: 1rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--gray-800);
}

.message.sent .message-text {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.message-time {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
}

.message.sent .message-time {
    text-align: right;
}

.message-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--gray-500);
}

.message-status i {
    color: var(--primary);
}

/* File Attachment */
.message-attachment {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 0.75rem;
    margin-bottom: 0.5rem;
}

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

.attachment-icon {
    width: 40px;
    height: 40px;
    background: var(--white);
    color: var(--error);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
}

.message.sent .attachment-icon {
    background: rgba(255, 255, 255, 0.9);
}

.attachment-info {
    flex: 1;
}

.attachment-name {
    font-weight: 600;
    color: inherit;
    margin-bottom: 0.25rem;
}

.attachment-size {
    font-size: 0.75rem;
    opacity: 0.8;
}

.attachment-download {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.attachment-download:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* System Message */
.system-message {
    background: var(--gray-50);
    border-radius: 1rem;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 80%;
}

.system-icon {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.system-text {
    flex: 1;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.system-time {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: flex-end;
    margin-bottom: 1.5rem;
}

.typing-content {
    background: var(--gray-100);
    border-radius: 1rem;
    padding: 1rem;
    margin-left: 0.75rem;
}

.typing-dots {
    display: flex;
    gap: 0.25rem;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: var(--gray-400);
    border-radius: 50%;
    animation: typing 1.5s infinite ease-in-out;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 80%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    40% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* Message Input Area */
.message-input-area {
    background: linear-gradient(to bottom, rgba(255,255,255,0.95), #ffffff);
    border-top: 1px solid var(--border-color, #e5e7eb);
    padding: 20px 24px 24px 24px;
    margin-top: auto; /* Pousse la zone en bas du conteneur flex */
    flex-shrink: 0;
    z-index: 10;
    box-shadow: 0 -4px 15px -1px rgba(0, 0, 0, 0.06);
    /* Assure que les coins inférieurs sont arrondis comme le conteneur parent */
    border-radius: 0 0 12px 12px;
}

.message-input-area > div {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.message-input-container {
    display: flex !important;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 1rem;
    width: 100%;
    visibility: visible !important;
}

.input-action-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100);
    color: var(--gray-600);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.input-action-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.message-input-wrapper {
    flex: 1;
    display: flex;
    align-items: flex-end;
    border: 2px solid var(--gray-200);
    border-radius: 1.5rem;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.message-input-wrapper:focus-within {
    border-color: var(--primary);
}

.message-input-wrapper textarea {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    font-size: 0.875rem;
    line-height: 1.5;
    max-height: 120px;
    background: none;
}

.emoji-btn {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 0.25rem;
    margin-left: 0.5rem;
    transition: var(--transition);
}

.emoji-btn:hover {
    color: var(--primary);
}

.send-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.send-btn:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

.send-btn:not(:disabled):hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

/* Quick Actions */
.quick-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.quick-action-btn {
    background: var(--gray-100);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quick-action-btn:hover {
    background: var(--primary);
    color: var(--white);
}

/* No Conversation State */
.no-conversation-state {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background: var(--gray-50);
}

.no-conversation-content {
    text-align: center;
    max-width: 400px;
    padding: 2rem;
}

.no-conversation-icon {
    width: 80px;
    height: 80px;
    background: var(--gray-200);
    color: var(--gray-400);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 2rem;
}

.no-conversation-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.no-conversation-content p {
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Conversation Info Panel */
.conversation-info-panel {
    width: 320px;
    border-left: 1px solid var(--gray-200);
    background: var(--white);
    overflow-y: auto;
}

.info-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.info-panel-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.close-info-panel {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.close-info-panel:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.info-panel-content {
    padding: 1.5rem;
}

.participant-info {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.participant-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
}

.participant-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.participant-details h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.participant-details p {
    color: var(--gray-600);
    margin-bottom: 0.75rem;
}

.participant-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--warning);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.btn-view-profile {
    width: 100%;
}

/* Mission Info */
.mission-info {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.mission-info h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.mission-card-mini {
    background: var(--gray-50);
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--gray-200);
}

.mission-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.mission-status {
    font-size: 0.75rem;
    color: var(--warning);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.mission-budget {
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* Shared Files */
.shared-files {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.shared-files h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
}

.file-item i {
    color: var(--error);
    font-size: 1.125rem;
}

.file-item span {
    flex: 1;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.file-download {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    transition: var(--transition);
}

.file-download:hover {
    background: var(--gray-200);
    color: var(--gray-700);
}

/* Conversation Actions */
.conversation-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.25rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

/* Recipient Search */
.recipient-search {
    position: relative;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    max-height: 200px;
    overflow-y: auto;
    z-index: 10;
    display: none;
}

.search-results.active {
    display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .messages-layout {
        grid-template-columns: 300px 1fr;
    }
    
    .conversations-sidebar {
        min-width: 300px;
    }
}

@media (max-width: 768px) {
    .messages-container {
        padding: 0;
        height: calc(100vh - 100px);
    }
    
    .messages-layout {
        grid-template-columns: 1fr;
        border-radius: 0;
    }
    
    .conversations-sidebar {
        display: none;
    }
    
    .conversations-sidebar.mobile-visible {
        display: flex;
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 100%;
        z-index: 100;
        background: var(--white);
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .quick-actions {
        display: none;
    }
    
    .messages-area {
        padding: 1rem;
    }
    
    .message-input-area {
        padding: 1rem;
    }
    
    .chat-header {
        padding: 1rem;
    }
}