.wb-excel-ai { display: flex; flex-direction: column; height: calc(100dvh - var(--wb-topbar-height)); min-height: 420px; max-width: 1240px; margin: 0 auto; padding: 16px 32px; }
.wb-chat-heading, .wb-chat-title { display: flex; align-items: center; gap: 12px; }
.wb-chat-heading { flex-shrink: 0; justify-content: space-between; margin-bottom: 12px; }
.wb-chat-title h1 { margin: 0; color: var(--wb-ink); font-size: 23px; letter-spacing: -.5px; }
.wb-chat-title p { margin: 3px 0 0; color: var(--wb-muted); font-size: 12px; }
.wb-chat-mark { display: grid; place-items: center; width: 46px; height: 46px; color: var(--wb-brand); background: var(--wb-brand-soft); border: 1px solid #d9ebdf; border-radius: 13px; }
.wb-chat-mark .wb-icon { width: 25px; height: 25px; }
.wb-excel-ai .wb-ai-clear { display: flex; align-items: center; gap: 6px; }
.wb-chat-panel { display: flex; flex-direction: column; flex: 1; min-height: 0; background: #fff; border: 1px solid var(--wb-line); border-radius: 18px; box-shadow: var(--wb-shadow-sm); overflow: hidden; }
.wb-chat-scroll { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 24px clamp(20px, 4vw, 56px) 20px; scrollbar-width: thin; }
.wb-chat-welcome { max-width: 720px; margin: 12px auto 20px; text-align: center; }
.wb-chat-welcome-icon { display: inline-grid; place-items: center; width: 58px; height: 58px; color: var(--wb-brand); background: var(--wb-brand-soft); border-radius: 18px; }
.wb-chat-welcome-icon .wb-icon { width: 31px; height: 31px; }
.wb-chat-eyebrow { margin: 16px 0 8px; color: var(--wb-brand); font-weight: 600; font-size: 12px; letter-spacing: 1px; }
.wb-chat-welcome h2 { margin: 0 0 12px; color: var(--wb-ink); font-size: clamp(23px, 2.4vw, 30px); letter-spacing: -.6px; }
.wb-chat-intro { margin: 0 auto; max-width: 560px; color: var(--wb-muted); line-height: 1.9; }
.wb-chat-suggestions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 28px; text-align: left; }
.wb-chat-suggestions button { display: flex; align-items: flex-start; gap: 12px; min-width: 0; padding: 17px 16px; color: var(--wb-text); background: var(--wb-surface-soft); border: 1px solid var(--wb-line); border-radius: 11px; font: inherit; text-align: left; cursor: pointer; }
.wb-chat-suggestions button:hover { border-color: #a4cbb2; background: var(--wb-brand-soft); }
.wb-chat-suggestions button > .wb-icon:first-child { color: var(--wb-brand); flex-shrink: 0; margin-top: 2px; }
.wb-chat-suggestions strong { display: block; margin-bottom: 5px; color: var(--wb-ink); font-size: 14px; }
.wb-chat-suggestions small { color: var(--wb-muted); line-height: 1.7; }
.wb-chat-arrow { margin-left: auto; width: 15px; flex-shrink: 0; opacity: .55; }
.wb-chat-bottom { flex-shrink: 0; border-top: 1px solid var(--wb-line); padding: 10px clamp(16px, 3vw, 32px); background: #fff; }
.wb-excel-ai .wb-ai-toolbar { padding: 0 0 6px; align-items: flex-start; }
.wb-chat-model { color: var(--wb-brand); background: var(--wb-brand-soft); border-radius: 5px; padding: 3px 7px; font-size: 11px; white-space: nowrap; }
.wb-chat-composer { border: 1px solid var(--wb-line-strong); border-radius: 12px; padding: 8px 12px 6px; transition: border-color .15s, box-shadow .15s; }
.wb-chat-composer:focus-within { border-color: var(--wb-brand); box-shadow: var(--wb-focus); }
.wb-chat-composer textarea { display: block; resize: vertical; width: 100%; height: 44px; min-height: 44px; max-height: 140px; border: 0; outline: 0; padding: 0; font: inherit; color: var(--wb-ink); background: transparent; line-height: 1.5; }
.wb-chat-composer textarea::placeholder { color: #929c96; }
.wb-chat-composer-actions { display: flex; align-items: center; gap: 10px; margin-top: 4px; }
.wb-chat-composer-actions > span { flex: 1; color: var(--wb-muted); font-size: 11px; }
.wb-excel-ai .wb-ai-send { display: inline-flex; align-items: center; gap: 7px; }
.wb-excel-ai .wb-ai-results { gap: 24px; }
.wb-excel-ai .wb-ai-question { max-width: 86%; padding: 13px 18px; }
.wb-excel-ai .wb-ai-answer { margin: 0; }
.wb-ai-speaker { margin-bottom: 10px; color: var(--wb-brand); font-size: 12px; font-weight: 700; }
.wb-ai-answer-text.is-markdown { white-space: normal; }
.wb-ai-answer-text.is-markdown > :first-child { margin-top: 0; }
.wb-ai-answer-text.is-markdown p { margin: 0 0 12px; }
.wb-ai-answer-text.is-markdown pre { position: relative; max-width: 100%; overflow-x: auto; padding: 42px 16px 16px; border: 1px solid var(--wb-line); border-radius: 10px; background: #f5f7f6; white-space: pre; line-height: 1.65; font-size: 13px; }
.wb-ai-answer-text.is-markdown code { padding: 2px 5px; border-radius: 4px; background: #edf2ee; font-family: Consolas, monospace; overflow-wrap: anywhere; }
.wb-ai-answer-text.is-markdown pre code { padding: 0; background: transparent; overflow-wrap: normal; }
.wb-ai-answer-text.is-markdown table { display: block; overflow-x: auto; max-width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 13px; }
.wb-ai-answer-text.is-markdown th, .wb-ai-answer-text.is-markdown td { padding: 8px 12px; border: 1px solid var(--wb-line); }
.wb-ai-answer-text.is-markdown th { background: var(--wb-surface-soft); }
.wb-ai-answer-text.is-markdown blockquote { margin: 12px 0; padding-left: 14px; border-left: 3px solid #b4d8c1; color: var(--wb-muted); }
.wb-ai-answer-text.is-markdown a { color: var(--wb-brand); text-decoration: underline; }
.wb-ai-copy { border: 1px solid var(--wb-line); background: #fff; border-radius: 6px; color: var(--wb-muted); padding: 4px 8px; font: inherit; font-size: 11px; cursor: pointer; }
.wb-ai-answer-text pre .wb-ai-copy { position: absolute; top: 8px; right: 10px; }
.wb-ai-answer-actions { margin: 10px 0 0; }
.wb-ai-message-error { color: #986018; font-size: 12px; }
@media (max-width: 699px) {
    .wb-excel-ai { padding: 12px; }
    .wb-chat-title p { max-width: 190px; }
    .wb-chat-title h1 { font-size: 20px; }
    .wb-chat-mark { display: none; }
    .wb-chat-heading { gap: 8px; }
    .wb-chat-panel { border-radius: 12px; }
    .wb-chat-scroll { padding: 24px 16px; }
    .wb-chat-welcome { margin-top: 0; }
    .wb-chat-suggestions { grid-template-columns: 1fr; gap: 8px; margin-top: 20px; }
    .wb-chat-suggestions button { padding: 12px; }
    .wb-chat-bottom { padding: 10px; }
    .wb-chat-model { max-width: 130px; overflow: hidden; text-overflow: ellipsis; }
    .wb-chat-composer-actions > span { font-size: 10px; }
}