/* 小智 AI 聊天气泡 —— 36氪风，简洁不花哨 */
:root {
    --zhisoo-ai-primary: #1E88E5;
    --zhisoo-ai-primary-dark: #1565C0;
    --zhisoo-ai-bg: #ffffff;
    --zhisoo-ai-text: #1f2329;
    --zhisoo-ai-sub: #8a919f;
    --zhisoo-ai-bubble-bot: #f2f3f5;
    --zhisoo-ai-border: #e5e6eb;
}

@media (prefers-color-scheme: dark) {
    :root {
        --zhisoo-ai-bg: #1d2129;
        --zhisoo-ai-text: #f2f3f5;
        --zhisoo-ai-sub: #86909c;
        --zhisoo-ai-bubble-bot: #2a2e35;
        --zhisoo-ai-border: #33383f;
    }
}

#zhisoo-ai-widget {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 99990;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Segoe UI", "Microsoft YaHei", sans-serif;
}

/* 悬浮按钮 */
#zhisoo-ai-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    background: var(--zhisoo-ai-primary);
    box-shadow: 0 4px 16px rgba(30, 136, 229, .35);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
    padding: 0;
}
#zhisoo-ai-toggle:hover {
    background: var(--zhisoo-ai-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 136, 229, .45);
}
#zhisoo-ai-toggle svg { width: 28px; height: 28px; display: block; }
#zhisoo-ai-toggle .zhisoo-ai-icon-close { display: none; }
#zhisoo-ai-widget.zhisoo-ai-open #zhisoo-ai-toggle .zhisoo-ai-icon-bot { display: none; }
#zhisoo-ai-widget.zhisoo-ai-open #zhisoo-ai-toggle .zhisoo-ai-icon-close { display: block; }

/* 对话面板 */
#zhisoo-ai-panel {
    position: absolute;
    right: 0;
    bottom: 68px;
    width: 340px;
    height: 380px;
    background: var(--zhisoo-ai-bg);
    border: 1px solid var(--zhisoo-ai-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, .12);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(12px) scale(.98);
    pointer-events: none;
    transition: opacity .18s ease, transform .18s ease;
}
#zhisoo-ai-widget.zhisoo-ai-open #zhisoo-ai-panel {
    opacity: 1;
    transform: none;
    pointer-events: auto;
}

#zhisoo-ai-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--zhisoo-ai-border);
    display: flex;
    align-items: center;
    gap: 8px;
    flex: none;
}
#zhisoo-ai-header .zhisoo-ai-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: #34c759; flex: none;
}
#zhisoo-ai-header .zhisoo-ai-name { font-size: 14px; font-weight: 600; color: var(--zhisoo-ai-text); }
#zhisoo-ai-header .zhisoo-ai-tag { font-size: 11px; color: var(--zhisoo-ai-sub); }

#zhisoo-ai-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    -webkit-overflow-scrolling: touch;
}

.zhisoo-ai-msg {
    max-width: 86%;
    padding: 9px 12px;
    border-radius: 10px;
    font-size: 13px;
    line-height: 1.6;
    word-break: break-word;
    white-space: pre-wrap;
}
.zhisoo-ai-msg.bot {
    align-self: flex-start;
    background: var(--zhisoo-ai-bubble-bot);
    color: var(--zhisoo-ai-text);
    border-bottom-left-radius: 4px;
}
.zhisoo-ai-msg.user {
    align-self: flex-end;
    background: var(--zhisoo-ai-primary);
    color: #fff;
    border-bottom-right-radius: 4px;
}
.zhisoo-ai-msg a { color: var(--zhisoo-ai-primary); text-decoration: none; }
.zhisoo-ai-msg.user a { color: #fff; text-decoration: underline; }

.zhisoo-ai-cta {
    font-size: 11px;
    color: var(--zhisoo-ai-sub);
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px dashed var(--zhisoo-ai-border);
}
.zhisoo-ai-cta a { color: var(--zhisoo-ai-primary); }

.zhisoo-ai-sources { margin-top: 6px; font-size: 11px; }
.zhisoo-ai-sources span { color: var(--zhisoo-ai-sub); }
.zhisoo-ai-sources a {
    display: inline-block;
    margin-right: 6px;
    color: var(--zhisoo-ai-primary);
}

/* 三点加载动画 */
.zhisoo-ai-typing { display: inline-flex; gap: 4px; align-items: center; height: 18px; }
.zhisoo-ai-typing i {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--zhisoo-ai-sub);
    animation: zhisoo-ai-blink 1.2s infinite ease-in-out;
}
.zhisoo-ai-typing i:nth-child(2) { animation-delay: .2s; }
.zhisoo-ai-typing i:nth-child(3) { animation-delay: .4s; }
@keyframes zhisoo-ai-blink {
    0%, 80%, 100% { opacity: .25; transform: translateY(0); }
    40% { opacity: 1; transform: translateY(-3px); }
}

/* 输入区 */
#zhisoo-ai-inputbar {
    flex: none;
    display: flex;
    gap: 8px;
    padding: 10px 12px;
    border-top: 1px solid var(--zhisoo-ai-border);
}
#zhisoo-ai-input {
    flex: 1;
    min-width: 0;
    height: 36px;
    padding: 0 12px;
    font-size: 13px;
    color: var(--zhisoo-ai-text);
    background: var(--zhisoo-ai-bubble-bot);
    border: 1px solid transparent;
    border-radius: 18px;
    outline: none;
}
#zhisoo-ai-input:focus { border-color: var(--zhisoo-ai-primary); background: transparent; }
#zhisoo-ai-send {
    flex: none;
    height: 36px;
    padding: 0 16px;
    border: none;
    border-radius: 18px;
    background: var(--zhisoo-ai-primary);
    color: #fff;
    font-size: 13px;
    cursor: pointer;
    transition: background .15s ease;
}
#zhisoo-ai-send:hover { background: var(--zhisoo-ai-primary-dark); }
#zhisoo-ai-send:disabled { opacity: .5; cursor: not-allowed; }

/* 移动端：全屏抽屉 */
@media (max-width: 640px) {
    #zhisoo-ai-widget { right: 16px; bottom: 16px; }
    #zhisoo-ai-panel {
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        width: auto; height: auto;
        border-radius: 0;
        border: none;
    }
    #zhisoo-ai-toggle { position: fixed; right: 16px; bottom: 16px; }
    #zhisoo-ai-widget.zhisoo-ai-open #zhisoo-ai-toggle { z-index: 99991; }
}

@media (prefers-reduced-motion: reduce) {
    #zhisoo-ai-toggle, #zhisoo-ai-panel { transition: none; }
}