.ai-chat-container.ai-chat-expanded {
    z-index: 999998;
}

body.ai-chat-overlay-active {
    overflow: hidden;
}

body.ai-chat-overlay-active::after {
    content: '';
    position: fixed;
    inset: 0;
	background: rgba(7, 14, 30, 0.55);
	backdrop-filter: blur(3px);
    z-index: 999997;
	pointer-events: auto;
    opacity: 1;
}

.ai-chat-wrapper {
    position: relative;
    z-index: 5;
}

body.ai-chat-overlay-active .ai-chat-container {
    pointer-events: none;
    min-height: 0;
    height: 0;
    margin-bottom: 0;
}

body.ai-chat-overlay-active .tool-ai-widget {
    pointer-events: auto;
}

body.ai-chat-overlay-active .ai-chat-wrapper,
body.ai-chat-overlay-active #globalAiChatWidget {
    position: relative;
    z-index: 999998;
}
/* 当移动端分类/筛选浮层打开时，降低 AI 弹窗层级，避免遮挡 */
body.filter-menu-open .ai-chat-container,
body.filter-menu-open .ai-chat-wrapper,
body.filter-menu-open #globalAiChatWidget,
body.filter-menu-open .tool-ai-widget.tai-simple-mode.tai-overlay-active {
    z-index: 2 !important;
}

body.ai-chat-overlay-active .ai-chat-wrapper {
    min-height: 0;
}

.tool-ai-assistant-wrapper {
    margin-top: 32px;
    margin-bottom: 32px;
}

.tool-ai-assistant-wrapper .section-title {
    display: none;
}

.tool-ai-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 12px;
}

.tool-ai-section-title {
    font-size: 22px;
    margin: 0;
    color: var(--text-primary, #f8fafc);
    font-weight: 600;
}

.tool-ai-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 255, 0.35);
    background: rgba(15, 23, 42, 0.4);
    color: var(--text-primary, #f8fafc);
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.tool-ai-toggle-btn:hover {
    background: rgba(99, 102, 241, 0.18);
    border-color: rgba(129, 140, 248, 0.6);
}

.tool-ai-toggle-btn:focus-visible {
    outline: 2px solid rgba(99, 102, 241, 0.65);
    outline-offset: 2px;
}

.tool-ai-section-body[hidden] {
    display: none !important;
}

.tool-ai-assistant-wrapper.tool-ai-collapsed .tool-ai-toggle-btn {
    background: rgba(15, 23, 42, 0.65);
}

.tool-ai-widget {
    --tai-card-bg: var(--card-bg, #111827);
    --tai-card-overlay: color-mix(in srgb, var(--accent-blue, #3b82f6) 14%, transparent);
    --tai-card-border: color-mix(in srgb, var(--accent-blue, #3b82f6) 20%, transparent);
    --tai-card-shadow: 0 24px 48px -32px color-mix(in srgb, var(--primary-bg, #0f172a) 68%, transparent);
    --tai-text-primary: var(--text-primary, #f8fafc);
    --tai-text-secondary: var(--text-secondary, rgba(148, 163, 184, 0.85));
    --tai-text-muted: color-mix(in srgb, var(--text-secondary, rgba(148, 163, 184, 0.85)) 65%, transparent);
    --tai-accent: var(--accent-blue, #3b82f6);
    --tai-accent-strong: var(--accent-purple, #6366f1);
    --tai-chip-bg: color-mix(in srgb, var(--tai-accent) 12%, transparent);
    --tai-chip-border: color-mix(in srgb, var(--tai-accent) 30%, transparent);
    --tai-input-bg: var(--input-bg, rgba(15, 23, 42, 0.86));
    --tai-input-border: var(--input-border, rgba(148, 163, 255, 0.22));
    --tai-input-focus: var(--input-focus, var(--tai-accent));

    border: 1px solid var(--tai-card-border, rgba(79, 119, 233, 0.18));
    border-radius: 18px;
    background: var(--tai-card-bg);
    box-shadow: var(--tai-card-shadow);
    padding: 24px 26px;
    transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
    position: relative;
    overflow: hidden;
    color: var(--tai-text-primary);
}

@supports not (color-mix(in srgb, red 50%, blue 50%)) {
    .tool-ai-widget {
        --tai-card-overlay: rgba(79, 119, 233, 0.12);
        --tai-card-border: rgba(79, 119, 233, 0.15);
        --tai-text-muted: rgba(226, 232, 255, 0.6);
        --tai-chip-bg: rgba(56, 189, 248, 0.12);
        --tai-chip-border: rgba(125, 211, 252, 0.3);
        --tai-input-bg: rgba(15, 23, 42, 0.82);
        --tai-input-border: rgba(148, 163, 255, 0.22);
        --tai-input-focus: rgba(56, 189, 248, 0.8);
    }
}

.tool-ai-widget::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, var(--tai-card-overlay, transparent) 0%, transparent 65%);
    pointer-events: none;
}

.tool-ai-widget .tai-loading-state {
    font-size: 14px;
    color: var(--tai-text-muted);
}

.tool-ai-widget .tai-inner {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tool-ai-widget .tai-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.tool-ai-widget .tai-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    color: var(--tai-text-primary);
    letter-spacing: 0.01em;
}

.tool-ai-widget .tai-subtitle {
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--tai-text-muted);
    line-height: 1.5;
}

.tool-ai-widget .tai-history {
    background: color-mix(in srgb, var(--tai-card-bg) 92%, var(--tai-card-overlay) 8%);
    border: none;
    border-radius: 16px 16px 0 0;
    padding: 20px 24px 32px;
    max-height: 720px;
    overflow-y: auto;
    backdrop-filter: blur(6px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    position: relative;
}

@supports not (color-mix(in srgb, red 50%, blue 50%)) {
    .tool-ai-widget .tai-history {
        background: rgba(15, 23, 42, 0.65);
        border: 1px solid rgba(148, 163, 255, 0.22);
    }
}

.tool-ai-widget .tai-history::-webkit-scrollbar {
    width: 6px;
}

.tool-ai-widget .tai-history::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--tai-card-border) 45%, transparent);
    border-radius: 4px;
}

.tool-ai-widget .tai-history.tai-history-empty {
    border-color: transparent;
    background: transparent;
    box-shadow: none;
}

.tool-ai-widget .tai-history.tai-history-awaiting {
    border-color: transparent;
    box-shadow: none;
}

.tool-ai-widget .tai-placeholder {
    font-size: 13px;
    color: var(--tai-text-muted);
    text-align: center;
}

.tool-ai-widget .tai-message {
    margin-bottom: 10px;
    display: flex;
    gap: 12px;
}

.tool-ai-widget .tai-message:last-child {
    margin-bottom: 0;
}

.tool-ai-widget .tai-message .tai-avatar {
    width: 32px;
    height: 32px;
.tool-ai-widget .tai-message-loading .tai-avatar {
    background: linear-gradient(135deg, #38bdf8, #6366f1);
    border-color: rgba(148, 163, 255, 0.5);
}

.tool-ai-widget .tai-message-loading .tai-message-body {
    width: auto;
    text-align: left; /* 与上一条“问”左对齐 */
    align-self: flex-start;
    font-style: italic;
    opacity: 0.9;
}

.tool-ai-widget .tai-message-loading {
    margin-top: 6px;
    align-items: flex-start; /* 与用户消息左对齐 */
}

.tool-ai-widget .tai-message-loading:first-child {
    margin-top: 0;
}

.tool-ai-widget .tai-thinking-indicator {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 4px 0;
    text-align: left;
}

.tool-ai-widget .tai-thinking-bubble {
    display: inline-flex;
    gap: 10px;
    padding: 10px 20px;
    border-radius: 999px;
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(125, 211, 252, 0.4);
    box-shadow: inset 0 0 12px rgba(56, 189, 248, 0.25), 0 10px 30px -20px rgba(59, 130, 246, 0.6);
    animation: tai-breathe 2s ease-in-out infinite;
}

.tool-ai-widget .tai-thinking-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(125, 211, 252, 0.9);
    animation: tai-bounce 1.2s infinite ease-in-out !important;
}

.tool-ai-widget .tai-thinking-dot:nth-child(2) {
    animation-delay: 0.15s;
}

.tool-ai-widget .tai-thinking-dot:nth-child(3) {
    animation-delay: 0.3s;
}

.tool-ai-widget .tai-thinking-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--tai-text-primary, var(--text-primary, #f8fafc));
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: none;
    box-shadow: none;
    background: transparent;
    text-decoration: none;
}

@keyframes tai-bounce {
    0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
    40% { transform: translateY(-8px); opacity: 1; }
}

@keyframes tai-breathe {
    0%, 100% { opacity: 0.6; transform: scale(0.96); }
    50% { opacity: 1; transform: scale(1); }
}

    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--tai-text-primary);
    flex-shrink: 0;
    box-shadow: 0 12px 32px -18px rgba(15, 23, 42, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.45);
    overflow: hidden;
}

.tool-ai-widget .tai-message-user .tai-avatar {
    background: linear-gradient(135deg, var(--accent-orange, #f97316), #facc15);
}

.tool-ai-widget .tai-message-assistant .tai-avatar {
    background: linear-gradient(135deg, var(--tai-accent), var(--tai-accent-strong));
}

.tool-ai-widget .tai-message-error .tai-avatar {
    background: linear-gradient(135deg, #f87171, #ef4444);
}

.tool-ai-widget .tai-avatar.tai-avatar-ai {
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(148, 163, 255, 0.45);
}

.tool-ai-widget .tai-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.tool-ai-widget .tai-message-body {
    flex: 1;
    background: rgba(15, 23, 42, 0.6);
    border-radius: 12px;
    padding: 14px 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(148, 163, 255, 0.18);
    color: #e2e8f0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.tool-ai-widget .tai-message-loading .tai-message-body {
    background: transparent;
    border: none;
    box-shadow: none;
    /* 与普通消息相同的内边距，保证文字起始对齐 */
    padding: 14px 16px;
    /* 与用户消息左对齐 */
    width: auto;
    text-align: left;
    align-self: flex-start;
    flex: 0 0 auto;
}


@supports not (color-mix(in srgb, red 50%, blue 50%)) {
    .tool-ai-widget .tai-message-body {
        background: rgba(15, 23, 42, 0.6);
        border: 1px solid rgba(148, 163, 255, 0.18);
    }
}

.tool-ai-widget .tai-message-user .tai-message-body {
    background: rgba(249, 115, 22, 0.12);
    border-color: rgba(249, 115, 22, 0.25);
    color: #f8fafc;
}

.tool-ai-widget .tai-message-assistant .tai-message-body {
    background: rgba(30, 41, 59, 0.75);
    border-color: rgba(99, 102, 241, 0.35);
    color: #e2e8f0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.tool-ai-widget .tai-message-error .tai-message-body {
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.16), rgba(239, 68, 68, 0.12));
    border-color: rgba(248, 113, 113, 0.28);
    color: #fee2e2;
}

.tool-ai-widget .tai-message-content {
    font-size: 14px;
    color: #e2e8f0;
    line-height: 1.4;
    white-space: normal;
    word-break: break-word;
}

.tool-ai-widget .tai-summary {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 10px;
    color: #f1f5f9;
}

.tool-ai-widget .tai-block {
    margin-top: 12px;
    border-top: 1px solid rgba(148, 163, 255, 0.06);
    padding-top: 12px;
}

.tool-ai-widget .tai-block-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: rgba(191, 219, 254, 0.88);
    letter-spacing: 0.01em;
}

.tool-ai-widget ul.tai-list {
    padding-left: 18px;
    margin: 0;
    display: grid;
    gap: 6px;
}

.tool-ai-widget ul.tai-list li {
    font-size: 13px;
    color: rgba(226, 232, 255, 0.82);
    line-height: 1.55;
}

.tool-ai-widget .tai-related-list,
.tool-ai-widget .tai-reference-list {
    display: grid;
    gap: 6px;
}

.tool-ai-widget .tai-related-item,
.tool-ai-widget .tai-reference-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(125, 211, 252, 0.25);
    border-radius: 10px;
    padding: 8px 10px;
    color: rgba(226, 232, 255, 0.82);
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.tool-ai-widget .tai-reference-item {
    background: rgba(79, 70, 229, 0.12);
    border-color: rgba(129, 140, 248, 0.32);
}

.tool-ai-widget .tai-related-item:hover,
.tool-ai-widget .tai-reference-item:hover {
    background: rgba(56, 189, 248, 0.16);
    border-color: rgba(125, 211, 252, 0.45);
    transform: translateY(-1px);
}

.tool-ai-widget .tai-reference-item:hover {
    background: rgba(99, 102, 241, 0.22);
    border-color: rgba(165, 180, 252, 0.5);
}

.tool-ai-widget .tai-related-item a,
.tool-ai-widget .tai-reference-item a {
    color: inherit;
    text-decoration: none;
}

.tool-ai-widget .tai-related-item a:hover,
.tool-ai-widget .tai-reference-item a:hover {
    text-decoration: underline;
}

.tool-ai-widget .tai-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    margin-bottom: 2px;
    overflow: visible;
    padding-bottom: 0;
}

.tool-ai-widget .tai-footer::after {
    content: '';
    display: block;
    width: 100%;
}

.tool-ai-widget .tai-suggestion-btn {
    border: 1px solid rgba(125, 211, 252, 0.35);
    border-radius: 999px;
    padding: 7px 16px;
    font-size: 13px;
    background: rgba(56, 189, 248, 0.12);
    color: rgba(240, 249, 255, 0.88);
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(6px);
    box-shadow: 0 12px 24px -20px rgba(14, 165, 233, 0.65);
    white-space: nowrap;
}

.tool-ai-widget .tai-suggestion-btn:hover {
    background: rgba(56, 189, 248, 0.2);
    border-color: rgba(125, 211, 252, 0.55);
    transform: translateY(-1px);
}

.tool-ai-widget .tai-footer {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tool-ai-widget .tai-input-area {
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(99, 102, 241, 0.35);
    border-radius: 999px;
    padding: 4px 12px 4px 16px;
    min-height: 44px;
	background: transparent;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.tool-ai-widget .tai-input-area:focus-within {
    border-color: rgba(129, 140, 248, 0.95);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
	background: transparent;
}

.tool-ai-widget .tai-input-control {
    flex: 1;
    border: none;
    padding: 10px 12px 10px 0;
    min-height: 0;
    resize: none;
    font-size: 15px;
    line-height: 1.4;
    color: #f1f5f9;
    background: transparent;
    transition: color 0.2s ease;
    overflow-y: hidden;
}

.tool-ai-widget .tai-input-control:focus {
    outline: none;
}

.tool-ai-widget .tai-input-control::-webkit-scrollbar {
    width: 6px;
}

.tool-ai-widget .tai-input-control::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.35);
    border-radius: 10px;
}

.tool-ai-widget .tai-input-control::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.55);
    border-radius: 10px;
}

.tool-ai-widget .tai-input-control::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.8);
}

.tool-ai-widget .tai-input-control::placeholder {
    color: rgba(203, 213, 225, 0.85); /* 深一点的提示词色 */
}

/* Remove scrollbar buttons (dots/arrows) */
.tool-ai-widget .tai-input-control::-webkit-scrollbar-button,
.tool-ai-widget .tai-history::-webkit-scrollbar-button,
.tool-ai-widget.tai-simple-mode .tai-history-scroll::-webkit-scrollbar-button,
/* catch-all within widget */
.tool-ai-widget *::-webkit-scrollbar-button,
.tool-ai-widget::-webkit-scrollbar-button {
	display: none;
	width: 0;
	height: 0;
	background: transparent;
	border: none;
}
/* ensure single-button variants are removed */
.tool-ai-widget *::-webkit-scrollbar-button:single-button {
	width: 0;
	height: 0;
	background: transparent;
	border: none;
}

.tool-ai-widget .tai-send-btn {
    width: 48px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 999px;
    border: none;
    background: linear-gradient(135deg, #0ea5e9 0%, #4338ca 100%);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: opacity 0.2s ease;
    padding: 0;
}

.tool-ai-widget .tai-send-label {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.tool-ai-widget .tai-send-btn:hover {
    opacity: 0.9;
    transform: none;
    box-shadow: none;
}

.tool-ai-widget .tai-send-btn:disabled {
    cursor: not-allowed;
    opacity: 0.65;
    transform: none;
    box-shadow: none;
}

.tool-ai-widget .tai-send-btn.loading {
    position: relative;
    pointer-events: none;
}

.tool-ai-widget .tai-send-btn.loading img {
    opacity: 0;
}

.tool-ai-widget .tai-send-btn.loading::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #ffffff;
    animation: tai-send-spin 0.8s linear infinite;
}

@keyframes tai-send-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.tool-ai-widget .tai-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: rgba(216, 225, 255, 0.5);
    flex-wrap: wrap;
    gap: 8px;
}

.tool-ai-widget .tai-loading {
    display: none;
    align-items: center;
    gap: 8px;
    color: rgba(125, 211, 252, 0.8);
    font-weight: 500;
}

.tool-ai-widget .tai-loading.active {
    display: inline-flex;
}

.tool-ai-widget .tai-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid rgba(125, 211, 252, 0.35);
    border-top-color: rgba(56, 189, 248, 0.9);
    animation: tai-spin 0.8s linear infinite;
}

.tool-ai-widget .tai-spinner-inline {
    width: 18px;
    height: 18px;
    border-width: 2px;
}

@keyframes tai-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    /* 移动端覆盖：避免桌面/全局 max-height 影响 overlay 布局 */
    .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history,
    .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history-scroll {
        max-height: none !important;
        min-height: 0;
    }
    .tool-ai-widget .tai-message {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 8px;
    }

    .tool-ai-widget .tai-message .tai-avatar {
        width: 26px;
        height: 26px;
        margin-bottom: 4px;
    }

    .tool-ai-widget .tai-message-body {
        width: 100%;
        padding: 10px 12px;
    }

    .tool-ai-assistant-wrapper {
        margin-top: 24px;
        margin-bottom: 24px;
    }

    .tool-ai-widget {
        padding: 18px;
    }

    .tool-ai-widget .tai-history {
        max-height: 260px;
    }

    .tool-ai-widget .tai-suggestions {
        gap: 2px;
        margin-bottom: 0;
    }

    .tool-ai-widget .tai-suggestion-btn {
        padding: 5px 10px;
        font-size: 12px;
    }
}

html[data-theme='light'] .tool-ai-widget {
    --tai-card-bg: var(--primary-bg, #ffffff);
    --tai-card-overlay: rgba(148, 163, 184, 0.08);
    --tai-card-border: rgba(203, 213, 225, 0.9);
    --tai-text-primary: #111827;
    --tai-text-secondary: rgba(17, 24, 39, 0.7);
    --tai-input-bg: #ffffff;
    --tai-input-border: rgba(148, 163, 184, 0.7);
    --tai-input-focus: rgba(99, 102, 241, 0.4);
    color: var(--tai-text-primary);
    border-color: rgba(203, 213, 225, 0.6);
    box-shadow: 0 18px 48px -32px rgba(15, 23, 42, 0.25);
}

html[data-theme='light'] .tool-ai-widget .tai-history {
    background: transparent; /* 保持透明，避免在输入框下形成纯白底 */
    border: none;
    box-shadow: none;
}

html[data-theme='light'] .tool-ai-widget .tai-history.tai-history-empty,
html[data-theme='light'] .tool-ai-widget .tai-history.tai-history-awaiting {
    border-color: transparent;
    box-shadow: none;
    background: transparent;
}

html[data-theme='light'] .tool-ai-widget .tai-history::before,
html[data-theme='light'] .tool-ai-widget .tai-history::after {
    display: none;
}


html[data-theme='light'] .tool-ai-widget .tai-message-body {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(203, 213, 225, 0.9);
    box-shadow: 0 12px 28px -24px rgba(15, 23, 42, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    color: #111827;
}

html[data-theme='light'] .tool-ai-widget .tai-message-loading .tai-message-body {
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
    padding: 10px 0;
}

html[data-theme='light'] .tool-ai-widget .tai-message-assistant .tai-message-body {
    background: rgba(238, 242, 255, 0.9);
    border-color: rgba(148, 163, 184, 0.8);
}

html[data-theme='light'] .tool-ai-widget .tai-message-content {
    color: #0f172a;
}

html[data-theme='light'] .tool-ai-widget .tai-title,
html[data-theme='light'] .tool-ai-widget .tai-subtitle,
html[data-theme='light'] .tool-ai-widget .tai-meta,
html[data-theme='light'] .tool-ai-widget .tai-block-title,
html[data-theme='light'] .tool-ai-widget .tai-list li {
    color: #111827;
}

html[data-theme='light'] .tool-ai-widget .tai-summary {
    color: #0f172a;
}

html[data-theme='light'] .tool-ai-widget .tai-message-user .tai-avatar {
    background: linear-gradient(135deg, #facc15, #fb923c);
    border-color: rgba(251, 191, 36, 0.6);
}

html[data-theme='light'] .tool-ai-widget .tai-input-control {
    background: transparent;
    border: none;
    color: #0f172a;
    box-shadow: none;
}

html[data-theme='light'] .tool-ai-widget .tai-input-control:focus {
    outline: none;
    border: none;
    box-shadow: none;
}

html[data-theme='light'] .tool-ai-widget .tai-input-area {
	background: transparent;
    border-color: rgba(148, 163, 184, 0.65);
}

/* 亮色主题下的占位符颜色也加深一点 */
html[data-theme='light'] .tool-ai-widget .tai-input-control::placeholder {
    color: rgba(15, 23, 42, 0.6);
}
html[data-theme='light'] .tool-ai-widget .tai-input-area:focus-within {
	background: transparent;
    border-color: rgba(34, 197, 94, 0.9);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.22);
}

html[data-theme='light'] .tool-ai-widget .tai-send-btn {
    background: linear-gradient(135deg, var(--accent-green, #22c55e) 0%, var(--accent-green-hover, #15803d) 100%) !important;
    background-color: var(--accent-green, #22c55e) !important;
    color: var(--btn-text-primary, #ffffff) !important;
    border: 1px solid color-mix(in srgb, var(--accent-green-hover, #15803d) 65%, transparent) !important;
    box-shadow: 0 16px 34px -18px color-mix(in srgb, var(--accent-green, #22c55e) 65%, transparent) !important;
    isolation: isolate;
}

html[data-theme='light'] .tool-ai-widget .tai-send-btn:hover {
    box-shadow: 0 22px 46px -18px rgba(21, 128, 61, 0.4) !important;
}

html[data-theme='light'] .tool-ai-widget .tai-send-btn.loading::after {
    border-color: rgba(34, 197, 94, 0.35);
    border-top-color: #22c55e;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.15);
}

html[data-theme='light'] .tool-ai-widget .tai-send-btn img {
    filter: brightness(0) invert(1) !important;
    opacity: 1 !important;
    mix-blend-mode: normal !important;
}

html[data-theme='light'] .tool-ai-widget .tai-suggestion-btn {
    border-color: rgba(148, 163, 184, 0.55);
    background: rgba(243, 244, 246, 0.92);
    color: #0f172a;
    font-weight: 600;
}

html[data-theme='light'] .tool-ai-widget .tai-suggestion-btn:hover {
    background: rgba(226, 232, 240, 0.95);
    border-color: rgba(99, 102, 241, 0.6);
}

html[data-theme='light'] .tool-ai-widget .tai-related-item,
html[data-theme='light'] .tool-ai-widget .tai-reference-item {
    background: rgba(148, 163, 184, 0.12);
    border-color: rgba(148, 163, 184, 0.4);
    color: #111827;
}

html[data-theme='light'] .tool-ai-widget .tai-related-item a,
html[data-theme='light'] .tool-ai-widget .tai-reference-item a {
    color: #111827;
}

html[data-theme='light'] .tool-ai-widget .tai-thinking-bubble {
    background: transparent;
    border: none;
    box-shadow: none;
}

html[data-theme='light'] .tool-ai-widget .tai-thinking-dot {
    background: linear-gradient(135deg, #4f46e5, #3b82f6);
}

html[data-theme='light'] .tool-ai-widget .tai-thinking-text {
    color: var(--text-primary, #111827);
}

/* AI Chat Entry Styles */
/* Banner Title 专属主题变量（各主题可单独覆盖） */
:root {
    --ai-banner-title-color: var(--nav-text-normal, var(--bs-nav-link-color, var(--bs-navbar-color, var(--text-primary, inherit))));
}
html[data-theme='light'] {
    --ai-banner-title-color: var(--nav-text-normal, var(--bs-nav-link-color, var(--bs-navbar-color, #111827)));
}
html[data-theme='dark'] {
    --ai-banner-title-color: var(--nav-text-normal, var(--bs-nav-link-color, var(--bs-navbar-color, var(--text-primary, #f8fafc))));
}

.ai-chat-banner {
    padding: 0;
    margin: 0;
    background: transparent;
    /* 跟随头部菜单链接颜色（回退到主题基础文字色） */
    color: var(--ai-banner-title-color, var(--bs-nav-link-color, var(--bs-navbar-color, var(--text-primary, inherit))));
    position: relative;
    z-index: 5;
    pointer-events: auto;
}

.ai-chat-banner .stars {
    display: none;
}

.ai-chat-entry {
    width: 100%;
}

.ai-chat-entry-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.ai-chat-entry-text {
    flex: 1;
    min-width: 280px;
}

.ai-chat-entry-title {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    /* 使用头部菜单链接的颜色，保持一致性 */
    color: var(--ai-banner-title-color, var(--bs-nav-link-color, var(--bs-navbar-color, var(--text-primary, inherit))));
    line-height: 1.2;
}

/* 桌面：标题与顶部菜单增加间距 */
@media (min-width: 769px) {
  .ai-chat-banner {
    margin-top: 16px;
  }
  .ai-chat-container {
    margin-top: 20px;
  }
}

.ai-chat-entry-subtitle {
    font-size: 1rem;
    margin: 0;
    color: var(--text-secondary, rgba(148, 163, 184, 0.85));
    line-height: 1.5;
}

.ai-chat-entry-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.ai-chat-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    border: 2px solid var(--accent-blue, #3b82f6);
    background: var(--accent-blue, #3b82f6);
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.ai-chat-toggle-btn:hover {
    background: var(--accent-purple, #6366f1);
    border-color: var(--accent-purple, #6366f1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.ai-chat-toggle-btn:active {
    transform: translateY(0);
}

.ai-chat-toggle-btn .toggle-icon {
    transition: transform 0.3s ease;
    font-size: 14px;
}

.ai-chat-toggle-btn[data-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

.ai-chat-search-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 12px;
    border: 2px solid var(--input-border, rgba(148, 163, 255, 0.22));
    background: transparent; /* 保持透明，避免与页面底色产生色差 */
    color: var(--text-primary, #f8fafc);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.ai-chat-search-link:hover {
    border-color: var(--accent-blue, #3b82f6);
    background: transparent; /* 悬停同样保持透明，避免产生底色条带 */
    color: var(--accent-blue, #3b82f6);
    transform: translateY(-1px);
}

.ai-chat-search-link i {
    font-size: 16px;
}

/* AI Chat Container */
.ai-chat-container {
    padding: 0;
    margin: 5px auto; /* 桌面版标题与导航之间增加上边距 */
    max-width: 100%;
    background: transparent;
    transition: opacity 0.3s ease, transform 0.3s ease;
    position: relative;
    z-index: 25;
    pointer-events: auto;
}

.ai-chat-container.ai-chat-collapsed .tai-history {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin: 0 !important;
    padding: 0 !important;
    display: none !important;
}

.ai-chat-container.ai-chat-collapsed .tai-history::after {
    display: none;
}

.ai-chat-container[data-visible="true"] {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ai-chat-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 0.25rem;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    background: transparent;
    box-shadow: none;
}
.ai-chat-banner::before,
.ai-chat-wrapper::before {
    display: none !important;
}
.ai-chat-wrapper .tool-ai-widget {
    width: 100%;
}

body.ai-chat-overlay-active .ai-chat-container > .container,
body.ai-chat-overlay-active .ai-chat-wrapper {
    max-width: none;
    width: 100vw;
    padding: 0;
    margin: 0;
}

body.ai-chat-overlay-active .ai-chat-container {
    display: flex;
    justify-content: center;
    width: 100vw;
}

body.ai-chat-overlay-active .ai-chat-wrapper {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 0 !important;
}

body.ai-chat-overlay-active .ai-chat-wrapper .tool-ai-widget {
    margin: 0 auto;
}

.ai-chat-banner > .container,
.ai-chat-container > .container {
    max-width: 100%;
    width: 100%;
    padding: 0;
    margin: 0;
}

@media (max-width: 768px) {
    .ai-chat-banner > .container,
    .ai-chat-container > .container {
        padding: 0 20px;
    }
    /* 移动端：缩小输入框与下方筛选区域的垂直间距 */
    .tool-ai-widget.tai-simple-mode .tai-input-area {
        margin-bottom: 6px;
    }
    /* 移动端：缩小整个 AI 区域与下方筛选模块的外边距 */
    .tool-ai-assistant-wrapper {
        margin-bottom: 10px;
    }
}

@media (max-width: 480px) {
    .ai-chat-banner > .container,
    .ai-chat-container > .container {
        padding: 0 20px;
    }
}

/* 标题颜色随主题继承，无需额外覆盖 */

html[data-theme='light'] .ai-chat-entry-subtitle {
    color: var(--text-secondary, rgba(55, 65, 81, 0.8));
}

html[data-theme='light'] .ai-chat-search-link {
    background: transparent; /* 亮色主题同样保持透明 */
    border-color: var(--input-border, rgba(209, 213, 219, 0.8));
    color: var(--text-primary, #111827);
}

html[data-theme='light'] .ai-chat-search-link:hover {
    border-color: var(--accent-blue, #3b82f6);
    background: rgba(59, 130, 246, 0.08);
    color: var(--accent-blue, #3b82f6);
}

html[data-theme='light'] .ai-chat-container {
    background: transparent; /* 容器背景透明，避免出现纯白色块 */
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .ai-chat-banner {
        padding: 0;
    }

    .ai-chat-entry-header {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    .ai-chat-entry-text {
        min-width: auto;
    }

    .ai-chat-entry-title {
        font-size: 1.5rem;
    }

    .ai-chat-entry-subtitle {
        font-size: 0.9rem;
    }

    .ai-chat-entry-actions {
        flex-direction: column;
        width: 100%;
    }

    .ai-chat-toggle-btn,
    .ai-chat-search-link {
        width: 100%;
        justify-content: center;
    }

    .ai-chat-container {
        padding: 0;
        margin: 0;
    }
    .ai-chat-wrapper {
        max-width: 100%;
        padding: 0;
    }
    .ai-chat-wrapper .tool-ai-widget {
        width: 100%;
    }
    .tool-ai-widget.tai-simple-mode .tai-inner-simple,
    .tool-ai-widget.tai-simple-mode .tai-footer,
    .tool-ai-widget.tai-simple-mode .tai-history {
        width: 100%;
        margin: 0 auto;
    }
    .tool-ai-widget.tai-simple-mode .tai-input-area {
        width: 100%;
    }
}

.tool-ai-widget.tai-simple-mode {
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
}

.tool-ai-widget.tai-simple-mode::before {
    display: none;
}

.tool-ai-widget .tai-inner.tai-inner-simple {
    gap: 0;
    background: transparent;
}

.tool-ai-widget.tai-simple-mode .tai-header,
.tool-ai-widget.tai-simple-mode .tai-suggestions {
    display: none;
}

.tool-ai-widget.tai-simple-mode .tai-footer {
    margin-top: 0;
    padding-top: 0;
    gap: 0;
    flex-direction: column;
    background: transparent;
}



.tool-ai-widget.tai-simple-mode .tai-input-area {
    position: relative;
    z-index: auto;
    border: 1px solid var(--banner-input-border, var(--input-border, rgba(148, 163, 255, 0.35)));
    background: var(--primary-bg, transparent);
    border-radius: 18px;
    padding: 8px 8px 8px 16px;
    align-items: stretch;
    margin-bottom: 12px;
    box-shadow: none;
}

.tool-ai-widget.tai-simple-mode .tai-input-control {
    background: transparent;
    border: none;
    padding-left: 0;
}

.tool-ai-widget.tai-simple-mode .tai-send-btn {
    border-radius: 14px;
    background: var(--accent-blue, #3b82f6);
    align-self: center;
    min-width: 44px;
    min-height: 44px;
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle {
    display: flex;
    align-items: center;
    height: auto;
    position: relative;
    z-index: auto;
    align-self: center;
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle-btn {
    border: 1px solid var(--banner-input-border, rgba(148, 163, 255, 0.35));
    background: transparent;
    color: var(--text-primary, #f8fafc);
    border-radius: 12px;
    padding: 0 14px;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    align-self: center;
    flex-shrink: 0;
    height: auto;
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle-btn,
.tool-ai-widget.tai-simple-mode .tai-send-btn {
    align-self: center;
    height: auto;
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(148, 163, 255, 0.6);
    transform: translateY(-1px);
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle-btn i {
    font-size: 16px;
    transition: transform 0.3s ease;
}

/* Force simple-mode input background to inherit page BG in all states */
.tool-ai-widget.tai-simple-mode .tai-input-area {
    background: transparent !important;
    box-shadow: none !important;
    border-color: var(--banner-input-border, rgba(148, 163, 255, 0.35)) !important;
}

.tool-ai-widget.tai-simple-mode .tai-input-area:focus-within {
    background: transparent !important;
    border-color: color-mix(in srgb, var(--accent-blue, #3b82f6) 65%, transparent) !important;
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-blue, #3b82f6) 35%, transparent) !important;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-input-area {
    background: transparent !important;
    border-color: color-mix(in srgb, #0f172a 12%, transparent) !important;
    box-shadow: none !important;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-input-area:focus-within {
    border-color: color-mix(in srgb, var(--accent-green, #10b981) 70%, transparent) !important;
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-green, #10b981) 25%, transparent) !important;
    background: transparent !important;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-inline-toggle-btn {
    color: var(--text-primary, #111827);
    border-color: rgba(15, 23, 42, 0.15);
    background: rgba(255, 255, 255, 0.85);
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle-btn:focus-visible {
    outline: 2px solid var(--accent-blue, #3b82f6);
    outline-offset: 2px;
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle.is-expanded .tai-inline-toggle-btn {
    background: rgba(148, 163, 255, 0.2);
    border-color: rgba(148, 163, 255, 0.8);
}

.tool-ai-widget.tai-simple-mode .tai-inline-toggle.is-expanded .tai-inline-toggle-btn i {
    transform: rotate(180deg);
}

.tool-ai-widget.tai-simple-mode .tai-history {
    width: 100%;
    margin: 14px auto 0;
    padding: 28px 36px 36px 24px;
    border-radius: 18px;
    border: 1px solid var(--banner-input-border, rgba(148, 163, 255, 0.25));
    background: var(--banner-panel-bg, rgba(7, 14, 30, 1));
    box-shadow: 0 18px 42px -32px rgba(15, 23, 42, 0.9);
    position: relative;
    z-index: 1000001;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
    display: flex;
    flex-direction: column;
    isolation: isolate;
}
.tool-ai-widget.tai-simple-mode .tai-history::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.06), transparent 35%);
    opacity: 0.35;
    pointer-events: none;
}

.tool-ai-widget.tai-simple-mode .tai-history-scroll {
    max-height: 720px;
    overflow-y: auto;
    padding: 36px 12px 0 0;
    flex: 1;
    height: auto;
}


.tool-ai-widget.tai-simple-mode .tai-history-scroll::-webkit-scrollbar {
    width: 6px;
    background: transparent;
}

.tool-ai-widget.tai-simple-mode .tai-history-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.tool-ai-widget.tai-simple-mode .tai-history-scroll::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 255, 0.35);
    border-radius: 999px;
}

.tool-ai-widget.tai-simple-mode .tai-history-scroll::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.55);
}

.tool-ai-widget.tai-simple-mode .tai-history-scroll {
    scrollbar-color: rgba(148, 163, 255, 0.45) transparent;
    scrollbar-width: thin;
}

.tool-ai-widget.tai-simple-mode .tai-history.tai-history-floating {
    box-shadow: 0 30px 90px -30px rgba(15, 23, 42, 0.85);
}

.tool-ai-widget.tai-simple-mode .tai-history.tai-history-floating .tai-history-scroll {
    height: calc(100% - 36px);
    max-height: none;
}

.tool-ai-widget.tai-simple-mode .tai-history .tai-history-close {
    position: absolute;
    top: 2px;
    right: 4px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: var(--banner-panel-bg, rgba(7, 14, 30, 0.96));
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, opacity 0.2s ease;
    z-index: 5;
}

.tool-ai-widget.tai-simple-mode .tai-history .tai-history-close i {
    pointer-events: none;
}

body.ai-chat-overlay-active .tool-ai-widget.tai-simple-mode .tai-history .tai-history-close {
    display: inline-flex;
}

.tool-ai-widget.tai-simple-mode .tai-history .tai-history-close:hover {
    background: rgba(59, 130, 246, 0.35);
    border-color: rgba(59, 130, 246, 0.6);
}

.tool-ai-widget.tai-simple-mode {
    position: relative;
}

.tool-ai-widget.tai-simple-mode .tai-overlay-close {
    position: absolute;
    top: 2px;
    right: 4px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: none;
    cursor: pointer;
    z-index: 1000002;
}

.tool-ai-widget.tai-simple-mode .tai-overlay-close:hover,
.tool-ai-widget.tai-simple-mode .tai-overlay-close:focus-visible {
    background: transparent;
    box-shadow: none;
}

body:not(.ai-chat-overlay-active) .tool-ai-widget.tai-simple-mode .tai-overlay-close {
    display: none;
}

body.ai-chat-overlay-active .tool-ai-widget.tai-simple-mode .tai-overlay-close {
    display: inline-flex;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-overlay-close {
    color: #0f172a;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-history {
    background: #ffffff;
    border-color: rgba(148, 163, 184, 0.25);
    box-shadow: 0 28px 56px rgba(15, 23, 42, 0.06);
}
html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-history::before {
    background: linear-gradient(180deg, rgba(15,23,42,0.04), transparent 35%);
    opacity: 1;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-history .tai-message-body {
    background: #f7fafc;
    color: #0f172a;
    border-color: rgba(15, 23, 42, 0.05);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-message-assistant .tai-message-body {
    background: #ffffff;
    border-color: rgba(99, 102, 241, 0.18);
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-message-user .tai-message-body {
    background: #fef9db;
    border-color: rgba(251, 191, 36, 0.28);
    color: #7c2d12;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode .tai-history .tai-history-close {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(15, 23, 42, 0.1);
    color: #0f172a;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active {
    position: fixed;
    top: 48px;
    bottom: clamp(32px, 8vh, 80px);
    left: 0;
    right: 0;
    width: min(960px, calc(100% - 32px));
    margin: 0 auto;
    transform: none;
    border-radius: 30px;
    padding: clamp(18px, 2.6vw, 36px);
	/* 固定标题栏高度（桌面与移动统一） */
	--tai-overlay-header-h: 50px;
	/* 顶部留出标题栏空间 */
	padding-top: calc(var(--tai-overlay-header-h) + 16px);
	background: var(--primary-bg, var(--card-bg, #111827));
	border: 1px solid rgba(99, 102, 241, 0.18);
	box-shadow: 0 40px 120px rgba(2, 6, 23, 0.55);
    z-index: 999999;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow: visible;
    box-sizing: border-box;
    backdrop-filter: blur(4px);
	/* Title (left) */
}
.tool-ai-widget.tai-simple-mode.tai-overlay-active::after {
	content: attr(data-title);
	position: absolute;
	top: 0;
	left: 50%;
	transform: translateX(-50%);
	height: var(--tai-overlay-header-h);
	line-height: var(--tai-overlay-header-h);
	font-size: 16px;
	font-weight: 700;
	letter-spacing: 0.02em;
	color: #e5e7eb;
	pointer-events: none;
}
.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-inner-simple {
    /* 桌面沿用移动端网格布局：消息区 1fr + 输入区 auto */
    display: grid;
    grid-template-rows: 1fr auto;
    min-height: 0;
    overflow: hidden;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-footer {
    /* 在网格布局中固定在底部行，避免被内容挤出可视区 */
    grid-row: 2;
    margin-top: 0;
    padding-top: 12px;
    align-self: stretch;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-input-area {
    margin-bottom: 0;
	background: transparent;
    border-color: rgba(255, 255, 255, 0.08);
	box-shadow: none;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-input-control {
    color: #f8fafc;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-input-control::placeholder {
    color: rgba(248, 250, 252, 0.48);
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-inline-toggle-btn {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
    color: #f8fafc;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-send-btn {
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    color: #fff;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.35);
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history {
	/* 占满可用空间，内容不足时也撑开以消除底部空白 */
	flex: 1 1 auto;
    margin: 0;
    padding: 0;
    border-radius: 0;
    border: none;
    background: transparent;
    box-shadow: none;
	/* 解除移动端早期规则中的 max-height 限制，填满可用空间 */
	max-height: none;
	height: auto;
    display: flex;
    flex-direction: column;
    isolation: isolate;
    min-height: 0;
    overflow: hidden;
    position: static;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history::before {
    opacity: 0;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history-scroll {
	/* 让滚动区填满容器并负责滚动，避免底部空白 */
	flex: 1 1 auto;
	/* 减小顶部间距，让首条消息更靠近标题栏 */
	padding: 16px clamp(4px, 1vw, 12px) clamp(12px, 1.5vw, 20px) 0;
    overflow-y: auto;
    min-height: 0;
    background: transparent;
}
.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-message-body,
.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-message-user .tai-message-body,
.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-message-assistant .tai-message-body {
    background: transparent;
    border: none;
    box-shadow: none;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history-close {
    position: fixed;
    top: clamp(16px, 6vh, 56px) - 28px;
    right: clamp(16px, 5vw, 64px) - 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(0, 0, 0, 0.55);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    z-index: 1000001;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history-close:hover {
    background: rgba(0, 0, 0, 0.65);
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active {
	background: rgba(245, 247, 255, 0.98);
	border: 1px solid rgba(15, 23, 42, 0.12);
	box-shadow: 0 35px 80px rgba(15, 23, 42, 0.35);
}
html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active::after {
	color: #0f172a;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-input-area {
	background: transparent !important;
    border-color: rgba(15, 23, 42, 0.1) !important;
	box-shadow: none !important;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-input-control {
    color: #0f172a;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-input-control::placeholder {
    color: rgba(15, 23, 42, 0.5);
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-inline-toggle-btn {
    border-color: rgba(15, 23, 42, 0.16);
    background: rgba(15, 23, 42, 0.06);
    color: #0f172a;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history {
    background: transparent;
    border-color: transparent;
    box-shadow: none;
}

html[data-theme='light'] .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history-close {
    background: rgba(15, 23, 42, 0.08);
    color: #0f172a;
}

.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-overlay-close {
    position: absolute;
	top: calc((var(--tai-overlay-header-h, 50px) - 40px) / 2);
    right: 4px;
    transform: none;
    z-index: 1000003;
}

/* Fix: 顶部 AI 输入框周围层的底色造成色差，强制透明 */
.ai-chat-container > .container {
  background: transparent !important;
  box-shadow: none !important;
}

html[data-theme='light'] .tool-ai-widget .tai-history {
  /* 仅在顶部输入框（折叠态）才需要透明，弹出卡片时由下面的覆盖规则恢复 */
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

.ai-chat-container.ai-chat-collapsed,
.ai-chat-container.ai-chat-collapsed > .container,
.ai-chat-container.ai-chat-collapsed .ai-chat-wrapper,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget .tai-inner,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget .tai-inner-simple,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget .tai-history,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget .tai-history-scroll,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget .tai-footer,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget .tai-input-area,
.ai-chat-container.ai-chat-collapsed #globalAiChatWidget .tai-input-control {
  background: transparent !important; /* 顶部输入框整链路强制透明，逐层消除白底 */
}

/* 继续去除外壳残留的叠加层/边框/阴影（只作用在顶部输入框所在容器） */
.ai-chat-container.ai-chat-collapsed .tool-ai-widget {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}
.ai-chat-container.ai-chat-collapsed .tool-ai-widget::before {
  display: none !important;
  background: transparent !important;
}

/* 弹出卡片（overlay）时，恢复卡片内容区域的正常背景，避免整张卡片透明 */
body.ai-chat-overlay-active .tool-ai-widget .tai-history {
  background: rgba(30, 41, 59, 0.75); /* 暗色主题的卡片背景 */
  border-color: rgba(99, 102, 241, 0.35);
  box-shadow: none;
}
html[data-theme='light'] body.ai-chat-overlay-active .tool-ai-widget .tai-history {
  background: rgba(255, 255, 255, 0.96); /* 亮色主题的卡片背景 */
  border: 1px solid rgba(203, 213, 225, 0.9);
  box-shadow: 0 12px 28px -24px rgba(15, 23, 42, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.tool-ai-widget .tai-inner.tai-inner-simple,
.tool-ai-widget .tai-footer,
.tool-ai-widget .tai-input-area,
.ai-chat-search-link,
.ai-chat-search-link:hover {
  background: transparent !important;
}

@media (max-width: 768px) {
    .tool-ai-widget.tai-simple-mode.tai-overlay-active {
        position: fixed;
        /* 贴底弹出，固定为视口高度的 80%（兼容 dvh） */
        top: auto;
        bottom: 5px;
        left: 0;
        right: 0;
        width: 95%;
        max-width: 95%;
        margin: 0 auto;
        border-radius: 24px;
        padding: 16px 12px 20px;
        /* 留出标题栏固定高度，避免内容遮挡标题 */
        padding-top: calc(var(--tai-overlay-header-h, 50px) + 12px);
        /* 背景与桌面一致 */
        background: var(--primary-bg, var(--card-bg, #111827));
        /* 80% 高度，且不超过可用视口 */
        height: min(80vh, 100dvh);
        max-height: min(80vh, 100dvh);
        overflow: hidden;
        box-sizing: border-box;
        transform: none;
    }
    /* 让内部网格严格充满容器高度 */
    .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-inner-simple {
        height: 100%;
        min-height: 0;
    }
	/* 使用三行网格：历史内容(自适应) / 间隔撑满 / 输入区(固定) */
	/* 改为双行网格：历史内容填满(1fr) / 输入区固定(auto) */
	.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-inner-simple {
		display: grid;
		grid-template-rows: 1fr auto;
		min-height: 0;
        position: static; /* 避免影响关闭按钮基于外层容器的定位 */
	}
	.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history {
		grid-row: 1;
		display: flex;
		flex-direction: column;
		min-height: 0;
	}
	.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history-scroll {
		flex: 1 1 auto;
		min-height: 0;
	}
	.tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-footer {
		grid-row: 2;
        position: sticky;
        bottom: env(safe-area-inset-bottom, 0px);
        z-index: 2;
        background: inherit;
        padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 8px);
        display: flex;
        align-items: center;
	}
	.tool-ai-widget.tai-simple-mode.tai-overlay-active::after {
		top: 0;
		left: 50%;
		transform: translateX(-50%);
		font-size: 15px;
	}

    .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history {
        padding: 0;
    }

    .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-history-scroll {
		/* 与桌面一致：为输入区预留空间（近似 72px）+ 安全区 */
		padding: 18px 8px calc(env(safe-area-inset-bottom, 0px) + 72px) 0;
    }

    .tool-ai-widget.tai-simple-mode .tai-overlay-close,
    .tool-ai-widget.tai-simple-mode.tai-overlay-active .tai-overlay-close {
		width: 40px;
		height: 40px;
		top: calc((var(--tai-overlay-header-h, 50px) - 40px) / 2);
        right: 4px;
    }
}

/* 强制：输入框相关容器一律透明，避免圆角下出现底色突兀 */
.tool-ai-widget .tai-footer,
.tool-ai-widget .tai-input-area,
.tool-ai-widget .tai-input-control {
    background: transparent !important;
}