.app-body { background:#f6f8fa; color:#233530; font-family:system-ui,sans-serif; }
.app-body [hidden] { display:none !important; }
.app-body .app-top { position:sticky; top:0; z-index:20; height:66px; padding:12px 28px; flex-direction:row; align-items:center; }
.app-body .brand { font-size:17px; }
.app-body .brand-mark { width:32px; height:32px; font-size:12px; border-radius:6px; }
.app-body .app-nav { font-size:13px; }
.workspace-nav { position:fixed; top:66px; left:0; bottom:0; width:220px; overflow:auto; background:#fff; border-right:1px solid #dfe5e9; padding:24px 14px; }
.workspace-nav a { display:block; padding:10px 14px; font-size:13px; color:#52615c; text-decoration:none; border-radius:5px; margin-bottom:3px; }
.workspace-nav a:hover { background:#f0f4f6; }
.workspace-nav a[aria-current] { color:#116447; background:#e7f3ec; font-weight:650; }
.nav-caption { font-size:10px; font-weight:650; color:#7c8984; margin:16px 14px 10px; overflow-wrap:anywhere; }
.nav-account { margin:26px 14px 0; padding-top:20px; border-top:1px solid #e5e9e7; font-size:12px; }
.app-body .workspace-main { margin:0 0 0 220px; width:calc(100% - 220px); max-width:1600px; padding:32px 36px 60px; }
.app-body .app-page-head { align-items:center; margin-bottom:28px; }
.app-body .app-page-head h1 { font-size:28px; line-height:1.25; letter-spacing:0; max-width:none; overflow-wrap:anywhere; }
.app-body h2,.app-body h2.upload-heading { font-size:18px; line-height:1.4; letter-spacing:0; margin:0 0 16px; }
.app-body h3 { font-size:14px; }
.app-body p,.app-body label { font-size:13px; line-height:1.6; }
.app-body .eyebrow { font-size:11px; letter-spacing:0; margin-bottom:6px; }
.app-body .app-card { background:transparent; border:0; border-radius:0; box-shadow:none; padding:0; min-width:0; }
.app-body .app-stack { padding:24px 0; border-top:1px solid #dfe5e9; overflow-x:auto; }
.app-body .app-grid { gap:28px; }
.app-body .workspace-mixed:not(:has(> :not([hidden]))) { display:none; }
.app-body .workspace-mixed:has(> [hidden]) { grid-template-columns:minmax(0,1fr); }
.app-body .app-form { gap:14px; max-width:900px; }
.app-body input,.app-body select,.app-body textarea { font:inherit; font-size:13px; padding:10px 12px; min-width:0; border:1px solid #d8e0dd; border-radius:5px; background:white; color:#233530; }
.app-body .button { font-size:13px; min-height:38px; padding:9px 15px; border-radius:5px; width:auto; letter-spacing:0; }
.app-body .app-form > button { justify-self:start; }
.app-body .app-table { font-size:13px; width:100%; background:white; border-collapse:collapse; }
.app-body .app-table th { background:#f0f3f5; color:#596962; font-size:11px; font-weight:600; }
.app-body .app-table th,.app-body .app-table .pill { white-space:nowrap; }
.app-body .app-table td { max-width:360px; }
.app-body summary { font-size:13px; }
.app-body .app-table td,.app-body .app-table th { padding:12px 14px; border-bottom:1px solid #e5eae7; text-align:left; overflow-wrap:anywhere; }
.app-body .pill { font-size:11px; font-weight:500; border-radius:4px; }
.workspace-tabs { display:flex; gap:24px; border-bottom:1px solid #dfe5e9; overflow:auto; }
.workspace-tabs a { padding:12px 0; font-size:13px; text-decoration:none; color:#667770; white-space:nowrap; }
.workspace-tabs a[aria-current] { color:#116447; border-bottom:2px solid #116447; font-weight:600; }
.app-body code { white-space:normal; overflow-wrap:anywhere; font-size:12px; }
.workspace-stats { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:20px; padding:20px 0 28px; }
.workspace-stats > div { border-left:3px solid #d6e2f1; padding:0 18px; }
.workspace-stats > div:nth-child(2) { border-color:#93cdb0; }
.workspace-stats > div:nth-child(3) { border-color:#e6c27e; }
.workspace-stats span { display:block; color:#6c7a74; font-size:12px; }
.workspace-stats strong { font-size:28px; font-weight:600; }
.chat-lab { background:#fff; border:1px solid #dfe5e9; border-radius:6px; overflow:hidden; }
.chat-lab-toolbar { display:flex; justify-content:space-between; align-items:center; gap:16px; padding:16px 20px; border-bottom:1px solid #e3e8e5; }
.chat-lab-toolbar label { display:flex; align-items:center; gap:12px; min-width:0; }
.chat-lab-toolbar select { max-width:100%; }
.preview-messages { height:420px; overflow:auto; padding:20px; }
.preview-empty { text-align:center; margin:100px 0; color:#7c8984; }
.preview-message { max-width:90%; padding:12px 16px; border-left:3px solid #b3c0d3; margin-bottom:20px; overflow-wrap:anywhere; }
.preview-message strong { font-size:12px; }
.preview-message p { white-space:pre-wrap; margin:6px 0; }
.preview-message.user { margin-left:12%; background:#f1f5fa; }
.preview-message.assistant { border-color:#69ad8a; }
.preview-message.error { border-color:#bd4f4f; }
.preview-mode { display:inline-block; color:#667770; background:#f0f4f2; border-radius:4px; padding:3px 7px; font-size:11px; margin-top:8px; }
.preview-message details { margin-top:12px; font-size:12px; }
.preview-message summary { cursor:pointer; color:#176d50; }
.preview-message details strong { display:block; margin-top:12px; }
.preview-compose { display:grid; grid-template-columns:1fr auto; gap:10px; padding:16px 20px; border-top:1px solid #e3e8e5; }
.preview-compose label,.preview-compose #preview-status { grid-column:1/-1; font-size:12px; }
.preview-compose button { align-self:end; }
@media(max-width:800px) {
 .workspace-nav { position:static; width:100%; display:flex; flex-wrap:wrap; gap:2px; padding:10px 12px; border-bottom:1px solid #dfe5e9; }
 .workspace-nav .nav-caption,.nav-account { display:none; }
 .workspace-nav a { padding:7px 10px; font-size:12px; margin:0; }
 .app-body .workspace-main { margin:0; width:100%; padding:22px 16px 40px; }
 .app-body .app-page-head h1 { font-size:23px; }
 .workspace-stats { grid-template-columns:repeat(2,minmax(0,1fr)); }
 .chat-lab-toolbar { align-items:stretch; flex-direction:column; }
 .preview-compose { grid-template-columns:1fr; }
 .preview-messages { height:360px; padding:12px; }
 .preview-message { max-width:100%; }
 .app-body .app-top { padding:10px 16px; }
}