@keyframes chatWidgetSlideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

#chat-widget-container {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1100;
    font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', Arial, sans-serif;
}

#chat-widget-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    background: linear-gradient(135deg, #2196f3 0%, #6ea8fe 100%);
    color: #fff;
    border-radius: 24px;
    box-shadow: 0 8px 24px rgba(33,150,243,0.25);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#chat-widget-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(33,150,243,0.30);
}

#chat-widget-button i {
    font-size: 1.4rem;
}

#chat-widget-panel {
    width: 320px;
    height: 420px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(15,86,179,0.18);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: chatWidgetSlideIn 0.25s ease;
}

#chat-widget-panel.hidden {
    display: none;
}

.chat-header {
    background: linear-gradient(135deg, #2196f3 0%, #6ea8fe 100%);
    color: #fff;
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-status {
    font-size: 0.82rem;
    opacity: 0.85;
    margin-top: 4px;
}

.chat-close-btn {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
}

.chat-body {
    flex: 1;
    padding: 12px 16px;
    background: #f4f8fc;
    overflow-y: auto;
}

#chat-messages {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-message {
    display: flex;
    flex-direction: column;
    max-width: 80%;
    padding: 10px 12px;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 4px 12px rgba(33,150,243,0.08);
    position: relative;
}

.chat-message.visitor {
    align-self: flex-start;
    background: #fff;
}

.chat-message.admin {
    align-self: flex-end;
    background: #2196f3;
    color: #fff;
}

.chat-message .meta {
    font-size: 0.75rem;
    opacity: 0.75;
    margin-bottom: 4px;
}

.chat-message img {
    max-width: 180px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(33,150,243,0.16);
}

.chat-input {
    border-top: 1px solid #e3effd;
    padding: 10px 12px;
    background: #fff;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-input textarea {
    width: 100%;
    min-height: 72px;
    resize: none;
    border: 1px solid #d3e3fd;
    border-radius: 10px;
    padding: 10px;
    font-size: 0.95rem;
}

.chat-input textarea:focus {
    outline: none;
    border-color: #6ea8fe;
    box-shadow: 0 0 0 2px rgba(33,150,243,0.12);
}

#chat-send-btn {
    align-self: flex-end;
    background: linear-gradient(135deg, #2196f3 0%, #21cbf3 100%);
    color: #fff;
    border: none;
    border-radius: 20px;
    padding: 6px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(33,150,243,0.18);
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar button,
.toolbar label {
    background: transparent;
    border: none;
    color: #6ea8fe;
    cursor: pointer;
    font-size: 1.1rem;
}

#chat-emoji-panel {
    position: absolute;
    right: 340px;
    bottom: 24px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(33,150,243,0.18);
    padding: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    max-width: 220px;
}

#chat-emoji-panel.hidden {
    display: none;
}

#chat-emoji-panel button {
    background: transparent;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    #chat-widget-container {
        right: 16px;
        bottom: 16px;
    }
    #chat-widget-panel {
        width: 90vw;
        height: 60vh;
    }
    #chat-emoji-panel {
        right: 16px;
    }
}