/* ==========================================================================
   Messages Page Styles
   ========================================================================== */

/* Messages Layout - Split View */
.messages-layout {
    display: flex;
    height: calc(100vh - 60px);
    overflow: hidden;
}

/* Conversations Sidebar */
.conversations-sidebar {
    width: 350px;
    min-width: 300px;
    max-width: 400px;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

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

.conversations-title {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.new-message-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: var(--transition-fast);
}

.new-message-btn:hover {
    background: var(--color-primary-hover);
    transform: scale(1.05);
}

.new-message-btn svg {
    width: 20px;
    height: 20px;
}

/* Conversations Search */
.conversations-search {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.conversations-search-input {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: var(--space-xs) var(--space-md);
}

.conversations-search-input:focus-within {
    border-color: var(--color-primary);
}

.conversations-search-input svg {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.conversations-search-input input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    padding: var(--space-xs) 0;
}

.conversations-search-input input::placeholder {
    color: var(--text-muted);
}

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

.conversation-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

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

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

.conversation-item.unread {
    background: rgba(0, 150, 136, 0.05);
}

.conversation-item.unread::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
}

/* Conversation Avatar */
.conversation-avatar {
    position: relative;
    flex-shrink: 0;
}

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

.conversation-avatar .online-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    background: var(--color-success);
    border: 2px solid var(--bg-primary);
    border-radius: 50%;
}

.conversation-item.active .conversation-avatar .online-indicator {
    border-color: var(--color-primary-alpha);
}

/* Group avatar */
.conversation-avatar.group {
    display: flex;
    flex-wrap: wrap;
    width: 50px;
    height: 50px;
}

.conversation-avatar.group img {
    width: 24px;
    height: 24px;
    border: 1px solid var(--bg-primary);
}

.conversation-avatar.group img:nth-child(1) { position: absolute; top: 0; left: 0; }
.conversation-avatar.group img:nth-child(2) { position: absolute; top: 0; right: 0; }
.conversation-avatar.group img:nth-child(3) { position: absolute; bottom: 0; left: 12px; }

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

.conversation-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2px;
}

.conversation-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conversation-item.unread .conversation-name {
    font-weight: 700;
}

.conversation-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    flex-shrink: 0;
}

.conversation-preview {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.conversation-preview-text {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.conversation-item.unread .conversation-preview-text {
    color: var(--text-secondary);
    font-weight: 500;
}

.conversation-unread-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: var(--color-primary);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

/* Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    min-width: 0;
}

/* Chat Header */
.chat-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.chat-back-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.chat-back-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.chat-back-btn svg {
    width: 20px;
    height: 20px;
}

.chat-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
    min-width: 0;
    cursor: pointer;
}

.chat-user-avatar {
    position: relative;
    flex-shrink: 0;
}

.chat-user-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.chat-user-avatar .online-indicator {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    background: var(--color-success);
    border: 2px solid var(--bg-primary);
    border-radius: 50%;
}

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

.chat-user-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.chat-user-name .verified-badge {
    width: 16px;
    height: 16px;
}

.chat-user-status {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.chat-user-status.online {
    color: var(--color-success);
}

.chat-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.chat-header-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.chat-header-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.chat-header-btn svg {
    width: 20px;
    height: 20px;
}

/* Messages Container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

/* Date Separator */
.message-date-separator {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) 0;
}

.message-date-separator span {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    background: var(--bg-primary);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

/* Message Bubble */
.message {
    display: flex;
    gap: var(--space-sm);
    max-width: 70%;
}

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

.message.received {
    align-self: flex-start;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    align-self: flex-end;
}

.message.sent .message-avatar {
    display: none;
}

.message-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.message-bubble {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    line-height: 1.5;
    word-wrap: break-word;
}

.message.sent .message-bubble {
    background: var(--color-primary);
    color: white;
    border-bottom-right-radius: var(--radius-sm);
}

.message.received .message-bubble {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-bottom-left-radius: var(--radius-sm);
}

.message-meta {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0 var(--space-xs);
}

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

.message-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.message-status {
    display: flex;
    align-items: center;
    color: var(--text-muted);
}

.message-status svg {
    width: 14px;
    height: 14px;
}

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

/* Message with Media */
.message-media {
    max-width: 280px;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-xs);
}

.message-media img {
    width: 100%;
    display: block;
}

.message-media video {
    width: 100%;
    display: block;
}

/* Message Input Area */
.message-input-area {
    padding: var(--space-md);
    border-top: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.message-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xs);
}

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

.message-input-actions {
    display: flex;
    align-items: center;
    gap: 0;
}

.message-input-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
}

.message-input-btn:hover {
    background: var(--bg-tertiary);
    color: var(--color-primary);
}

.message-input-btn svg {
    width: 20px;
    height: 20px;
}

.message-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    padding: var(--space-sm);
    resize: none;
    max-height: 120px;
    line-height: 1.4;
}

.message-input::placeholder {
    color: var(--text-muted);
}

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

.message-send-btn:hover {
    background: var(--color-primary-hover);
}

.message-send-btn:disabled {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    cursor: not-allowed;
}

.message-send-btn svg {
    width: 20px;
    height: 20px;
}

/* Empty Chat State */
.chat-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
    text-align: center;
}

.chat-empty-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.chat-empty-icon svg {
    width: 40px;
    height: 40px;
}

.chat-empty h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.chat-empty p {
    font-size: var(--font-size-base);
    color: var(--text-muted);
    max-width: 300px;
    margin-bottom: var(--space-lg);
}

/* No Conversations State */
.no-conversations {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl) var(--space-md);
    text-align: center;
}

.no-conversations-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.no-conversations-icon svg {
    width: 32px;
    height: 32px;
}

.no-conversations h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.no-conversations p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* New Message Modal */
.new-message-modal {
    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-normal);
}

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

.new-message-modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    transform: translateY(20px);
    transition: var(--transition-normal);
}

.new-message-modal.active .new-message-modal-content {
    transform: translateY(0);
}

.new-message-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.new-message-modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.new-message-modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.new-message-modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.new-message-modal-close svg {
    width: 20px;
    height: 20px;
}

.new-message-search {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.new-message-search input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.new-message-search input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.new-message-search input::placeholder {
    color: var(--text-muted);
}

.new-message-users {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-sm) 0;
}

.new-message-user {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.new-message-user:hover {
    background: var(--bg-secondary);
}

.new-message-user img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.new-message-user-info {
    flex: 1;
    min-width: 0;
}

.new-message-user-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.new-message-user-name .verified-badge {
    width: 16px;
    height: 16px;
}

.new-message-user-username {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
}

.typing-indicator-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.typing-indicator-dots {
    display: flex;
    gap: 4px;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.typing-indicator-dot {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typing-bounce 1.4s ease-in-out infinite;
}

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

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

@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

/* Loading States */
.conversations-loading,
.messages-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
}

.messages-loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Conversation skeleton */
.conversation-skeleton {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
}

.conversation-skeleton-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.conversation-skeleton-content {
    flex: 1;
}

.conversation-skeleton-line {
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.conversation-skeleton-line:last-child {
    width: 60%;
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 900px) {
    .conversations-sidebar {
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 100%;
        max-width: 100%;
        z-index: 10;
        transform: translateX(0);
        transition: var(--transition-normal);
    }

    .conversations-sidebar.hidden {
        transform: translateX(-100%);
    }

    .chat-back-btn {
        display: flex;
    }

    .chat-area {
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        transform: translateX(100%);
        transition: var(--transition-normal);
    }

    .chat-area.active {
        transform: translateX(0);
    }

    .messages-layout {
        position: relative;
    }
}

@media (max-width: 480px) {
    .message {
        max-width: 85%;
    }

    .message-input-actions {
        display: none;
    }

    .chat-header-actions .chat-header-btn:not(:last-child) {
        display: none;
    }
}