body {
    font-family: Arial, sans-serif;
    background: #f2f2f2;
    margin: 20px;
}
.chat-container {
    max-width: 650px;
    margin: 0 auto;
    padding: 10px;
}
.chat-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.chat-tabs .tab {
    padding: 6px 12px;
    background: #ddd;
    border-radius: 6px;
    text-decoration: none;
    color: #000;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.chat-tabs .tab.active {
    background: #4a90e2;
    color: #fff;
}
.chat-tabs .tab.unread {
    animation: blink 1s infinite;
}
.chat-tabs .tab .close {
    font-weight: bold;
    cursor: pointer;
}
@keyframes blink {
    0% { background: #ff4444; color:#fff; }
    50% { background: #ff9999; color:#000; }
    100% { background: #ff4444; color:#fff; }
}
.chat-box {
    width: 100%;
    height: 380px;
    border: 1px solid #ccc;
    padding: 12px;
    overflow-y: auto;
    background: #fafafa;
    border-radius: 8px;
    box-shadow: inset 0 0 4px rgba(0,0,0,0.1);
}
.chat-message {
    display: flex;
    align-items: flex-start;
    margin-bottom: 12px;
}
.chat-message.me {
    flex-direction: row-reverse;
}
.chat-message .avatar {
    width: 36px;
    height: 36px;
    background: #007bff;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    font-weight: bold;
}
.chat-message.me .avatar {
    margin-left: 10px;
    margin-right: 0;
    background: #28a745;
}
.chat-message .bubble {
    background: white;
    padding: 8px 12px;
    border-radius: 8px;
    max-width: 75%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.chat-message.me .bubble {
    background: #dcf8c6;
}
.bubble .name {
    font-weight: bold;
    margin-bottom: 4px;
}
.bubble .time {
    font-size: 0.75rem;
    color: #666;
    margin-top: 6px;
    text-align: right;
}
.bubble.system {
    font-style: italic;
    background: #f5f5f5;
}
textarea {
    width: calc(100% - 50px);
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #aaa;
    resize: vertical;
}
.send-btn {
    margin-top: 10px;
    padding: 8px 14px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}
.send-btn:hover {
    background: #0069d9;
}
#chatForm {
    max-width: 650px;
    margin: 0 auto;
}
#chatInput {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    resize: none;
    margin-top: 10px;
}
#emojiBtn {
    padding: 10px;
    margin-right: 6px;
    border-radius: 6px;
    border: 1px solid #aaa;
    background: #fff;
    cursor: pointer;
}
#emojiPicker {
    position: absolute;
    background: #fff;
    border: 1px solid #ccc;
    padding: 6px;
    border-radius: 6px;
    display: none;
    max-width: 260px;
    bottom: 55px;
    left: 0;
    z-index: 50;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
#emojiTabs {
    display: flex;
    gap: 4px;
    margin-bottom: 4px;
}
#emojiTabs button {
    flex: 1;
    padding: 3px 0;
    border: 1px solid #ccc;
    background: #f5f5f5;
    cursor: pointer;
    font-size: 0.9rem;
}
#emojiTabs button.active {
    background: #4a90e2;
    color: #fff;
    border-color: #4a90e2;
}
#emojiSearch {
    width: 100%;
    padding: 4px 6px;
    margin-bottom: 4px;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-size: 0.85rem;
}
#emojiGrid {
    max-height: 180px;
    overflow-y: auto;
}
#emojiGrid span {
    cursor: pointer;
    font-size: 1.2rem;
    padding: 3px;
    display: inline-block;
}
#typingIndicator {
    font-style: italic;
    color: #666;
    margin-top: 5px;
    display: none;
}
.chat-tab.unread {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%   { background-color: #ff4444; }
    50%  { background-color: #ffffff; }
    100% { background-color: #ff4444; }
}
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.close-btn {
    background: none;
    border: none;
    font-size: 26px;
    cursor: pointer;
    color: #333;
    padding: 0 8px;
}