/* Lab IA (site/ia/): hub, tools and guides. Uses the colour tokens of style.css (light and dark themes). */
.lab { max-width: 1080px; }
.lab .crumbs { margin-top: 18px; font-size: .9rem; color: var(--muted); }
.lab-hero { text-align: center; margin: 36px auto 10px; max-width: 820px; }
.lab-hero h1 { font-size: clamp(1.9rem, 5.2vw, 3rem); line-height: 1.12; margin: 6px 0 14px; letter-spacing: -.01em; }
.lab-hero .lead-l { margin: 0 auto; max-width: 720px; }
.lab-promises { justify-content: center; margin-top: 18px; }
.lab-promises li { font-weight: 600; }
.lab-head { margin: 14px 0 18px; max-width: 820px; }
.lab-head h1 { font-size: clamp(1.6rem, 4.6vw, 2.4rem); line-height: 1.18; margin: 6px 0 12px; }
.lab-private { margin-top: 10px; }
.lab-section { margin: 44px 0 0; }
.lab-section > h2, .lab-section .section-head h2 { margin-bottom: 4px; }
.lab-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 290px), 1fr)); gap: 16px; margin-top: 16px; }
.lab-card { position: relative; display: flex; flex-direction: column; gap: 8px; padding: 20px; border: 1px solid var(--border); border-radius: 16px; background: var(--bg-soft); color: var(--fg); text-decoration: none; transition: border-color .15s, transform .15s, box-shadow .15s; }
a.lab-card:hover, a.lab-card:focus-visible { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.lab-card h3 { margin: 0; font-size: 1.12rem; line-height: 1.3; }
.lab-card p { margin: 0; color: var(--muted); font-size: .95rem; }
.lab-card.soon { opacity: .78; border-style: dashed; }
.lab-ico { font-size: 2rem; line-height: 1; }
.lab-go { margin-top: auto; padding-top: 6px; color: var(--link); font-weight: 600; font-size: .92rem; }
.lab-meta { font-size: .82rem; color: var(--muted); }
.lab-badge { display: inline-block; vertical-align: middle; font-size: .7rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); color: var(--muted); }
.lab-also { margin-top: 20px; padding: 18px 20px; border: 1px solid var(--border); border-radius: 16px; }
.lab-also h3 { margin: 0 0 2px; }
.lab-also ul { list-style: none; padding: 0; margin: 10px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 8px 18px; }
.lab-pillars { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr)); gap: 16px; margin-top: 14px; }
.lab-pillar { padding: 18px; border-radius: 16px; border: 1px solid var(--border); border-top: 4px solid var(--accent); background: var(--bg-soft); }
.lab-pillar h3 { margin: 0 0 6px; font-size: 1.05rem; }
.lab-pillar p { margin: 0 0 8px; color: var(--muted); font-size: .93rem; }
.lab-pillar ul { margin: 0; padding-inline-start: 18px; }
.lab-pillar li { margin: 4px 0; }
.lab-principles { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); gap: 16px; margin-top: 14px; }
.lab-principle { padding: 18px; border-radius: 16px; background: var(--bg-soft); border: 1px solid var(--border); }
.lab-principle h3 { margin: 6px 0; font-size: 1.02rem; }
.lab-principle p { margin: 0; color: var(--muted); font-size: .93rem; }
.lab-log { list-style: none; padding: 0; margin: 12px 0 0; }
.lab-log li { display: flex; gap: 14px; flex-wrap: wrap; padding: 10px 0; border-bottom: 1px solid var(--border); }
.lab-log time { font-weight: 700; min-width: 150px; }
.lab-cta { margin: 56px 0 10px; padding: 28px; border-radius: 20px; background: var(--bg-soft); border: 1px solid var(--border); text-align: center; }
.lab-cta h2 { margin-top: 0; }
.lab-cta p { color: var(--muted); max-width: 680px; margin: 8px auto; }
.lab-cta-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }

/* Tools */
.lab-tool { margin-top: 10px; }
.lab-panel { margin: 16px 0; }
.lab-panel h2 { margin-top: 0; font-size: 1.25rem; }
.lab-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.btn.small { padding: 5px 12px; font-size: .85rem; }
.lab-checks { border: 0; padding: 0; margin: 14px 0; }
.lab-checks legend { font-weight: 600; margin-bottom: 6px; }
.lab-checks .option, .lab-presets .option { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; margin: 6px 0; }
.lab-checks .option input, .lab-presets .option input { margin-top: 4px; }
.lab-presets { border: 0; padding: 0; }
.lab-out { margin: 14px 0; }
.lab-out-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 6px; }
.lab-out-head > span:first-child { margin-inline-end: auto; }
.lab-out textarea, .lab-out input, .lab-sec textarea, .lab-sec input { width: 100%; box-sizing: border-box; padding: 10px 12px; border: 2px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--fg); font: inherit; }
.lab-out textarea { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; line-height: 1.5; resize: vertical; }
.lab-out textarea:focus, .lab-out input:focus, .lab-sec textarea:focus, .lab-sec input:focus { border-color: var(--accent); outline: none; }
.lab-count { font-size: .82rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); }
.lab-count.near { border-color: #d29922; color: #9a6700; }
.lab-count.over { border-color: var(--danger); color: var(--danger); }
.lab-checklist { list-style: none; padding: 0; margin: 8px 0; display: grid; gap: 6px; }
.lab-checklist li { display: flex; gap: 8px; align-items: flex-start; padding: 8px 12px; border-radius: 10px; background: var(--bg); border: 1px solid var(--border); font-size: .93rem; }
.lab-checklist li.err { border-color: var(--danger); }
.lab-checklist li.warn { border-color: #d29922; }
.lab-score { font-size: .95rem; padding: 3px 12px; border-radius: 999px; color: #fff; vertical-align: middle; }
.lab-score.ok { background: var(--accent); } .lab-score.warn { background: #9a6700; } .lab-score.err { background: var(--danger); }
.lab-drop { display: grid; gap: 6px; place-items: center; text-align: center; padding: 28px 16px; border: 2px dashed var(--border); border-radius: 16px; cursor: pointer; background: var(--bg); }
.lab-drop.over, .lab-drop:hover { border-color: var(--accent); }
.lab-drop span { font-weight: 600; }
.lab-img { display: grid; grid-template-columns: 110px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.lab-img img { width: 110px; height: 110px; object-fit: contain; border-radius: 10px; border: 1px solid var(--border); background: repeating-conic-gradient(#ccc 0% 25%, #fff 0% 50%) 50% / 16px 16px; }
.lab-img h3 { margin: 0; font-size: 1rem; overflow-wrap: anywhere; }
.lab-table { border-collapse: collapse; width: 100%; font-size: .92rem; }
.lab-table th, .lab-table td { border-bottom: 1px solid var(--border); padding: 8px; text-align: start; vertical-align: middle; }
.lab-table tr.err td { background: color-mix(in srgb, var(--danger) 8%, transparent); }
.lab-table select { padding: 6px 8px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--fg); font: inherit; }
.lab-role { display: inline-block; font-size: .78rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.lab-role.train { background: #fde2e1; color: #8a1c17; } .lab-role.search { background: #dbeafe; color: #1e3a8a; } .lab-role.user { background: #fef3c7; color: #7a5b00; } .lab-role.engine { background: #d1f0d8; color: #1a5b2a; }
:root:not([data-theme="light"]) .lab-role.train, :root[data-theme="dark"] .lab-role.train { background: #3d1513; color: #ffb4ae; }
:root:not([data-theme="light"]) .lab-role.search, :root[data-theme="dark"] .lab-role.search { background: #152544; color: #a9c8ff; }
:root:not([data-theme="light"]) .lab-role.user, :root[data-theme="dark"] .lab-role.user { background: #3a3000; color: #ffe08a; }
:root:not([data-theme="light"]) .lab-role.engine, :root[data-theme="dark"] .lab-role.engine { background: #13351f; color: #9fe6b4; }
.lab-sec { margin: 12px 0; padding: 12px; border: 1px solid var(--border); border-radius: 12px; }
.lab-sec-head { display: flex; gap: 8px; margin-bottom: 8px; }
.lab-sec-head input { flex: 1; }
.lab-file code { font-size: .95rem; }
.lab .faq-item { border: 1px solid var(--border); border-radius: 12px; padding: 0 16px; margin: 10px 0; background: var(--bg-soft); }
.lab .faq-item summary { cursor: pointer; padding: 14px 0; font-weight: 600; }
.lab .faq-item[open] summary { border-bottom: 1px solid var(--border); margin-bottom: 10px; }
.lab .faq-item > p:last-child { margin-bottom: 14px; }

/* Guides */
.lab-article { max-width: 780px; }
.lab-byline { color: var(--muted); font-size: .92rem; display: flex; flex-wrap: wrap; gap: 4px 8px; }
.lab-toc { margin: 18px 0 26px; padding: 14px 18px; border: 1px solid var(--border); border-radius: 14px; background: var(--bg-soft); }
.lab-toc-title { margin: 0; font-weight: 700; }
.lab-toc ol { margin: 10px 0 2px; padding-inline-start: 22px; columns: 2 260px; column-gap: 28px; }
.lab-toc li { margin: 4px 0; break-inside: avoid; }
.lab-prose { font-size: 1.04rem; line-height: 1.72; }
.lab-prose h2 { margin-top: 2.2em; scroll-margin-top: 80px; font-size: 1.5rem; }
.lab-prose h3 { margin-top: 1.6em; font-size: 1.15rem; }
.lab-prose li { margin: 6px 0; }
.lab-prose table { border-collapse: collapse; width: 100%; margin: 14px 0; font-size: .93rem; line-height: 1.5; }
.lab-prose th, .lab-prose td { border: 1px solid var(--border); padding: 7px 9px; text-align: start; vertical-align: top; }
.lab-prose th { background: var(--bg-soft); }
.lab-prose .table-wrap { overflow-x: auto; }
.lab-prose pre { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 10px; padding: 12px; overflow-x: auto; direction: ltr; text-align: left; font-size: .88rem; line-height: 1.55; }
.lab-prose blockquote { margin: 16px 0; padding: 6px 16px; border-inline-start: 4px solid var(--accent); background: var(--bg-soft); border-radius: 0 10px 10px 0; }
.lab-prose blockquote p { margin: 8px 0; }
.lab-prose code { font-size: .9em; overflow-wrap: anywhere; }
.lab-prose pre code { overflow-wrap: normal; }

@media (max-width: 560px) {
  .lab-img { grid-template-columns: 72px 1fr; }
  .lab-img img { width: 72px; height: 72px; }
  .lab-cta { padding: 22px 16px; }
  .lab-table { font-size: .85rem; }
}

/* Phase 2: prompt library, automation ROI, API cost */
.lab-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 6px; }
.lab-chips button { border: 1px solid var(--border); background: var(--bg); color: var(--fg); border-radius: 999px; padding: 6px 14px; font: inherit; font-size: .9rem; cursor: pointer; }
.lab-chips button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.lab-prompts { display: grid; gap: 16px; margin-top: 10px; }
.lab-prompt { padding: 18px 20px; border: 1px solid var(--border); border-radius: 16px; background: var(--bg-soft); }
.lab-prompt h3 { margin: 6px 0 4px; font-size: 1.15rem; }
.lab-prompt .lab-badge { margin: 0; }
.lab-prompt-text { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 14px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .86rem; line-height: 1.6; max-height: 340px; overflow-y: auto; margin: 12px 0; }
[dir=rtl] .lab-prompt-text { font-family: inherit; font-size: .95rem; }
.lab-prompt-text mark { background: #fff3cd; color: #7a5b00; border-radius: 4px; padding: 0 3px; }
.lab-prompt-text mark.filled { background: #d1f0d8; color: #1a5b2a; }
:root:not([data-theme="light"]) .lab-prompt-text mark, :root[data-theme="dark"] .lab-prompt-text mark { background: #3a3000; color: #ffe08a; }
:root:not([data-theme="light"]) .lab-prompt-text mark.filled, :root[data-theme="dark"] .lab-prompt-text mark.filled { background: #13351f; color: #9fe6b4; }
.lab-prompt-fields { border-top: 1px dashed var(--border); margin-top: 6px; }
.lab-prompt-fields textarea, .lab-prompt-fields input { width: 100%; box-sizing: border-box; }
.lab-why { display: grid; grid-template-columns: 1fr; gap: 2px; margin: 10px 0 0; font-size: .92rem; }
.lab-why dt { font-weight: 700; margin-top: 6px; } .lab-why dd { margin: 0; color: var(--muted); }
.lab-kpis { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 170px), 1fr)); gap: 10px; }
.lab-kpi { padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--bg); display: grid; gap: 4px; }
.lab-kpi span { font-size: .82rem; color: var(--muted); } .lab-kpi b { font-size: 1.25rem; }
.lab-kpi.ok { border-color: var(--accent); } .lab-kpi.warn { border-color: #d29922; } .lab-kpi.err { border-color: var(--danger); }
.lab-verdict { margin: 14px 0; padding: 12px 14px; border-radius: 12px; font-weight: 600; border: 1px solid var(--border); background: var(--bg); }
.lab-verdict.ok { border-color: var(--accent); } .lab-verdict.warn { border-color: #d29922; } .lab-verdict.err { border-color: var(--danger); }
.lab-chart svg { width: 100%; height: auto; display: block; }
.lab-chart rect.pos { fill: var(--accent); } .lab-chart rect.neg { fill: var(--danger); opacity: .75; }
.lab-chart .zero { stroke: var(--muted); stroke-width: 1; }
.lab-chart .pess { fill: none; stroke: #d29922; stroke-width: 2; stroke-dasharray: 5 4; }
.lab-chart text { fill: var(--muted); font-size: 11px; text-anchor: middle; } .lab-chart text.lbl { text-anchor: start; }
.lab-tier { display: inline-block; font-size: .7rem; font-weight: 700; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.lab-bar { display: block; height: 5px; margin-top: 5px; background: var(--bg); border-radius: 3px; overflow: hidden; min-width: 80px; }
.lab-bar i { display: block; height: 100%; background: var(--accent); }
.lab-table tr.best td { background: color-mix(in srgb, var(--accent) 9%, transparent); }
.lab-table td.mono { font-family: ui-monospace, monospace; font-size: .85rem; white-space: nowrap; direction: ltr; }
.lab-inline { display: inline-flex !important; margin-inline-end: 14px !important; }
.lab-est { margin-top: 12px; border: 1px solid var(--border); border-radius: 12px; padding: 10px 14px; background: var(--bg); }
.lab-est h3 { margin: 4px 0 0; font-size: 1rem; }
.lab-est textarea { width: 100%; box-sizing: border-box; margin-top: 10px; padding: 10px; border: 2px solid var(--border); border-radius: 10px; background: var(--bg-soft); color: var(--fg); font: inherit; }
/* Checkboxes and radios inside .field groups keep their native size (style.css styles .field inputs as text boxes). */
.lab .field input[type="checkbox"], .lab .field input[type="radio"], .lab .option input[type="checkbox"], .lab .option input[type="radio"] { width: auto; min-width: 0; padding: 0; border: 0; box-shadow: none; margin: 4px 0 0; flex: 0 0 auto; accent-color: var(--accent); }
.lab-checks { display: flex; flex-wrap: wrap; gap: 2px 18px; }
.lab-checks legend { width: 100%; }
/* Open-source project cards (Lab hub) */
.project-card .btn { align-self: flex-start; margin-top: 8px; }
.project-points { margin: 4px 0 0; padding-inline-start: 18px; color: var(--muted); font-size: .92rem; }
.project-points li { margin: 3px 0; }
.lab-projects { grid-template-columns: repeat(auto-fill, minmax(min(100%, 460px), 1fr)); }