/**
 * AI 客服悬浮窗样式
 * 配色沿用 landing.css 的 CSS 变量，深浅色由变量自动适配。
 */

/* ---------------------------------------------------- 悬浮按钮 */
.ai-support {
    position: fixed;
    right: 24px;
    bottom: 24px;
    /* 必须高于 landing.css 中的层级，否则客服窗会被盖住：
       .landing-skip-link 10002 / .landing-mobile-menu 1001 / .landing-nav 1000
       取 11000，留出扩展空间且不影响 skip-link（无障碍跳转链接，仅聚焦时可见）。 */
    z-index: 11000;
    font-family: var(--font-family);
}

.ai-support[hidden] {
    display: none;
}

/* 移动端导航菜单展开时（.landing-mobile-menu.is-open 为全屏遮罩），
   客服窗应退到遮罩之下，否则会浮在遮罩上显得突兀。
   用 :has() 向上探测 body 后代，无 JS 依赖；不支持 :has() 的浏览器
   仅少这条规则，退回z-index 11000，不影响可用性。 */
body:has(.landing-mobile-menu.is-open) .ai-support {
    z-index: 1000;
}

.ai-launcher {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    height: 52px;
    padding: 0 20px 0 16px;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 10px 28px rgba(13, 158, 168, 0.32);
    transition: transform 0.2s, box-shadow 0.2s;
}

.ai-launcher:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(13, 158, 168, 0.4);
}

.ai-launcher i {
    font-size: 16px;
}

/* 未展开时隐藏气泡文案，给标签让位 */
.ai-support:not(.is-open) .ai-launcher .ai-launcher-text {
    display: inline;
}

/* 客服面板 */
.ai-panel {
    position: absolute;
    right: 0;
    bottom: 64px;
    width: 400px;
    max-width: calc(100vw - 32px);
    height: 580px;
    max-height: calc(100vh - 120px);
    display: none;
    flex-direction: column;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    box-shadow: 0 24px 60px rgba(7, 17, 31, 0.18);
    overflow: hidden;
}

.ai-support.is-open .ai-panel {
    display: flex;
}

/* 大屏态：面板占视口 60%，水平垂直居中（非全屏）。
   容器改为 flex 居中，面板用百分比尺寸；
   注意 .ai-panel 基础样式是 absolute + right/bottom 定位，
   这里必须重置为 static 交由 flex 摆放，否则会叠加偏移。 */
.ai-support.is-fullscreen {
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    /* 面板外的区域压暗，凸显弹层层次；点击该区域由 JS 退回普通面板态 */
    background: rgba(7, 17, 31, 0.45);
}

.ai-support.is-fullscreen .ai-panel {
    position: static;
    width: 60%;
    height: 60%;
    /* 保证可用性：极窄屏幕下不塌缩，较高屏幕下不过大 */
    min-width: 420px;
    min-height: 380px;
    max-width: min(1100px, 96vw);
    max-height: 92vh;
    border-radius: 20px;
    box-shadow: 0 32px 80px rgba(7, 17, 31, 0.32);
}

.ai-support.is-fullscreen .ai-launcher {
    display: none;
}

/* 大屏时消息区可用高度更大 */
.ai-support.is-fullscreen .ai-body {
    padding: 20px 22px;
}

.ai-support.is-fullscreen .ai-msg {
    max-width: 76%;
    font-size: 14px;
}

.ai-support.is-fullscreen .ai-input {
    height: 46px;
}

/* 头部 */
.ai-head {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: #fff;
    flex-shrink: 0;
}

.ai-avatar {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.18);
    display: grid;
    place-items: center;
    font-size: 17px;
    flex-shrink: 0;
}

.ai-head-text {
    flex: 1;
    min-width: 0;
}

.ai-head-title {
    display: block;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.3;
}

.ai-head-sub {
    display: block;
    font-size: 12px;
    opacity: 0.85;
    margin-top: 1px;
}

.ai-head-actions {
    display: flex;
    gap: 4px;
}

.ai-icon-btn {
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    cursor: pointer;
    font-size: 13px;
    display: grid;
    place-items: center;
    transition: background 0.2s;
}

.ai-icon-btn:hover {
    background: rgba(255, 255, 255, 0.28);
}

/* 工具条：紧贴输入框上方的迷你插件行 */
.ai-toolbar {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 7px;
}

.ai-toolbar-field {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-width: 0;
    flex: 1 1 auto;
}

.ai-toolbar-icon {
    position: absolute;
    left: 9px;
    display: grid;
    place-items: center;
    font-size: 11px;
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.ai-toolbar-field select {
    width: 100%;
    height: 32px;
    padding: 0 8px 0 26px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg-subtle);
    color: var(--color-text);
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    text-overflow: ellipsis;
}

.ai-toolbar-field select:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg);
}

/* 原生下拉箭头：纯 CSS 描边绘制，不再依赖 Font Awesome 字体（原为 content:'\f078'） */
.ai-toolbar-field::after {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    width: 5px;
    height: 5px;
    margin-top: -4px;
    border-right: 1.5px solid var(--color-text-tertiary);
    border-bottom: 1.5px solid var(--color-text-tertiary);
    transform: rotate(45deg);
    pointer-events: none;
}

.ai-generate {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 32px;
    padding: 0 12px;
    flex-shrink: 0;
    border: none;
    border-radius: 8px;
    background: var(--color-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
}

.ai-generate:hover:not(:disabled) {
    background: var(--color-primary-hover);
}

.ai-generate:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ai-generate.is-busy i {
    animation: ai-spin 1s linear infinite;
}

/* 消息区 */
.ai-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px 14px;
    background: var(--color-bg-subtle);
    display: flex;
    flex-direction: column;
    gap: 10px;
    scroll-behavior: smooth;
}

.ai-msg {
    max-width: 88%;
    padding: 10px 13px;
    border-radius: 13px;
    font-size: 13px;
    line-height: 1.68;
    word-break: break-word;
}

.ai-msg--user {
    align-self: flex-end;
    background: var(--color-primary);
    color: #fff;
    border-bottom-right-radius: 4px;
    white-space: pre-wrap;
}

.ai-msg--bot {
    align-self: flex-start;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-bottom-left-radius: 4px;
}

.ai-msg--notice {
    align-self: center;
    max-width: 92%;
    background: transparent;
    border: 1px dashed var(--color-border);
    color: var(--color-text-tertiary);
    font-size: 12px;
    text-align: center;
    padding: 8px 12px;
}

/* Bot 正文排版 */
.ai-msg-content > *:first-child {
    margin-top: 0;
}

.ai-msg-content > *:last-child {
    margin-bottom: 0;
}

.ai-msg-content h3,
.ai-msg-content h4,
.ai-msg-content h5,
.ai-msg-content h6 {
    margin: 12px 0 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text);
}

.ai-msg-content p {
    margin: 0 0 6px;
}

.ai-msg-content ul,
.ai-msg-content ol {
    margin: 0 0 8px;
    padding-left: 18px;
}

.ai-msg-content li {
    margin-bottom: 3px;
}

.ai-msg-content blockquote {
    margin: 8px 0;
    padding: 7px 11px;
    border-left: 3px solid var(--color-primary);
    background: var(--color-primary-muted);
    border-radius: 0 8px 8px 0;
    color: var(--color-text-secondary);
}

.ai-msg-content code {
    padding: 1px 5px;
    background: var(--color-bg-subtle);
    border-radius: 4px;
    font-size: 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.ai-msg-content pre {
    margin: 8px 0;
    padding: 10px 12px;
    background: #0d1726;
    color: #d7e3f4;
    border-radius: 9px;
    overflow-x: auto;
    font-size: 12px;
}

.ai-msg-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

/* 工具调用行 */
.ai-tool {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 7px;
    max-width: 92%;
    padding: 6px 11px;
    border-radius: 9px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    font-size: 11.5px;
    color: var(--color-text-tertiary);
}

.ai-tool i {
    color: var(--color-text-tertiary);
}

.ai-tool--run i {
    color: var(--color-primary);
    animation: ai-spin 1s linear infinite;
}

.ai-tool--ok i {
    color: var(--color-success);
}

.ai-tool--fail i {
    color: #e23d3d;
}

.ai-tool-text {
    font-weight: 600;
    white-space: nowrap;
}

.ai-tool-detail {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@keyframes ai-spin {
    to { transform: rotate(360deg); }
}

/* 输入区 */
.ai-foot {
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
    flex-shrink: 0;
}

.ai-login-hint {
    padding: 16px;
    text-align: center;
}

.ai-login-hint p {
    margin: 0 0 12px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.ai-login-btn {
    display: inline-block;
    padding: 9px 22px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
}

.ai-form {
    padding: 10px 14px 10px;
}

.ai-input-row {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.ai-input {
    flex: 1;
    min-width: 0;
    height: 40px;
    padding: 10px 13px;
    border: 1px solid var(--color-border);
    border-radius: 11px;
    background: var(--color-bg-subtle);
    color: var(--color-text);
    font-size: 13px;
    font-family: inherit;
    resize: none;
}

.ai-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg);
}

.ai-send {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border: none;
    border-radius: 11px;
    background: var(--color-primary);
    color: #fff;
    cursor: pointer;
    font-size: 14px;
    display: grid;
    place-items: center;
    transition: background 0.2s;
}

.ai-send:hover:not(:disabled) {
    background: var(--color-primary-hover);
}

.ai-send:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* 状态行：空闲时必须完全让出空间，否则会在输入区上方留一条空白带。
   仅用 opacity:0 隐藏的话元素仍占高度（行高 + margin-top）。 */
.ai-status {
    font-size: 11px;
    color: var(--color-text-tertiary);
    text-align: center;
    margin-top: 6px;
    /* 空闲：display:none，不占任何空间 */
    display: none;
    opacity: 0;
    transition: opacity 0.2s;
}

/* 忙碌：恢复为块级并淡入 */
.ai-status.is-visible {
    display: block;
    opacity: 1;
}

/* 快捷键提示条（此前此处为免责声明，文案已按要求移除） */
.ai-disclaimer {
    padding: 0 14px 8px;
    font-size: 11px;
    color: var(--color-text-tertiary);
    text-align: center;
    line-height: 1.5;
}

/* 无阻断元素时不应占高度 */
.ai-disclaimer:empty {
    display: none;
}

/* 快捷键提示 */
.ai-disclaimer-kbd {
    display: block;
    opacity: 0.75;
}

/* 滚动条 */
.ai-body::-webkit-scrollbar {
    width: 6px;
}

.ai-body::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

@media (max-width: 640px) {
    .ai-support {
        right: 14px;
        bottom: 14px;
    }

    .ai-panel {
        right: -4px;
        bottom: 60px;
        width: calc(100vw - 28px);
        height: min(72vh, 560px);
    }

    .ai-launcher {
        height: 48px;
        padding: 0 16px 0 14px;
    }

    .ai-support:not(.is-open) .ai-launcher .ai-launcher-text {
        display: none;
    }

    .ai-launcher {
        width: 48px;
        padding: 0;
        justify-content: center;
    }

    /* 移动端：60% 会让输入区过窄，改用近全屏但保留边距，
       同时解除 min-width/height 限制并缩小内边距 */
    .ai-support.is-fullscreen {
        padding: 8px;
    }

    .ai-support.is-fullscreen .ai-panel {
        width: 100%;
        height: 100%;
        min-width: 0;
        min-height: 0;
        max-width: 100%;
        max-height: 100%;
    }
}