/* Workbench: composer, cited answer, evidence drawer, calculation card, activity timeline, feedback. */
.view-workbench { position: relative; z-index: 2; padding: calc(var(--nav-h) + 56px) 0 clamp(64px, 10vw, 140px); min-height: 100dvh; }
.view-workbench > .wb-head, .view-workbench > .wb-grid { width: 100%; max-width: calc(var(--page) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.wb-head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 24px; margin-bottom: clamp(28px, 4vw, 52px); }
.wb-head-copy { display: grid; gap: 18px; max-width: 46rem; }
.wb-title { font-size: clamp(2.8rem, 7vw, 5.6rem); }
.wb-grid { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 24px; align-items: start; }
.wb-main { display: grid; gap: 24px; min-width: 0; }
.wb-rail { position: sticky; top: 92px; display: grid; gap: 14px; min-width: 0; }
@media (max-width: 1100px) { .wb-grid { grid-template-columns: minmax(0, 1fr); } .wb-rail { position: static; } }

/* ---------- Composer ---------- */
.composer { display: grid; gap: 22px; }
.gate:empty { display: none; }
.gate { display: grid; gap: 12px; }
.gate-line { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; border-radius: var(--r-sm); background: var(--paper-2); }
.gate-line > .icon { margin-top: 2px; color: var(--accent); }
.gate-line strong { font-weight: 600; }
.gate-line p { color: var(--ink-2); margin-top: 2px; }
.gate-line.report-only { background: var(--brass-soft); }
.gate-line.report-only > .icon { color: var(--brass-text); }
.gate-line.signed { align-items: center; justify-content: space-between; flex-wrap: wrap; }
.gate-line.signed > div { flex: 1; }
.login { display: flex; gap: 10px; flex-wrap: wrap; }
.login .input { flex: 1 1 200px; width: auto; }
.gate-status { font-size: 0.86rem; color: var(--ink-2); min-height: 1.2em; }
.gate-status.error, .gate-error { color: var(--bad); }
.composer.is-locked .composer-form { opacity: 0.6; }
.question { min-height: 112px; resize: vertical; font-size: 1.08rem; line-height: 1.5; }
.composer-foot { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; margin-top: 6px; }
.composer-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 16px; font-size: 0.8rem; color: var(--muted); }
.count { font-family: var(--font-mono); }
.composer-hint { display: inline-flex; align-items: center; gap: 4px; }
.btn.is-busy .btn-ico { animation: breathe 1.1s var(--ease) infinite alternate; }
@keyframes breathe { from { transform: scale(1); opacity: 1; } to { transform: scale(0.82); opacity: 0.55; } }

.examples { border-top: var(--hair); padding-top: 18px; }
.examples summary { display: flex; align-items: center; gap: 14px; cursor: pointer; list-style: none; padding-block: 4px; }
.examples summary::-webkit-details-marker { display: none; }
.examples-count { font-size: 0.82rem; color: var(--muted); margin-left: auto; }
.examples .chev { transition: transform var(--dur-2) var(--ease); }
.examples[open] .chev { transform: rotate(90deg); }
.example-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 290px), 1fr)); gap: 12px; margin-top: 18px; }
.example-family { display: grid; gap: 8px; align-content: start; padding: 16px; border-radius: var(--r-md); border: var(--hair); background: var(--paper); }
.example-head { display: flex; align-items: center; gap: 10px; color: var(--accent); }
.example-head h3 { font-size: 1.12rem; color: var(--ink); }
.example-note { font-size: 0.82rem; color: var(--ink-2); margin-bottom: 4px; }
.example-q { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; text-align: left; padding: 12px 10px 12px 14px; border-radius: var(--r-sm); border: var(--hair); background: var(--surface); transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease); }
.example-q:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--accent); }
.example-q:active:not(:disabled) { transform: scale(0.99); }
.example-q:disabled { opacity: 0.62; cursor: not-allowed; }
.example-text { font-size: 0.86rem; line-height: 1.45; color: var(--ink); display: -webkit-box; -webkit-line-clamp: 5; line-clamp: 5; -webkit-box-orient: vertical; overflow: hidden; }
.example-q .btn-ico { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: color-mix(in srgb, var(--ink) 7%, transparent); flex: none; transition: transform var(--dur-2) var(--ease); }
.example-q .btn-ico .icon { width: 14px; height: 14px; }
.example-q:hover:not(:disabled) .btn-ico { transform: translate(2px, -1px); }

/* ---------- Empty, loading, error ---------- */
.answer-region { min-width: 0; }
.empty { display: grid; grid-template-columns: minmax(180px, 300px) 1fr; gap: clamp(20px, 4vw, 48px); align-items: center; padding: clamp(24px, 4vw, 44px); border: 1px dashed var(--line-strong); border-radius: var(--r-lg); }
.empty-art { width: 100%; height: auto; overflow: visible; }
.art-paper { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1.5; }
.art-rule { stroke: var(--line-strong); stroke-width: 1.5; stroke-linecap: round; }
.art-series { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.art-point { fill: var(--surface); stroke: var(--accent); stroke-width: 2; }
.art-ring { fill: color-mix(in srgb, var(--surface) 45%, transparent); stroke: var(--brass); stroke-width: 4; }
.art-handle { stroke: var(--brass); stroke-width: 7; stroke-linecap: round; }
.art-glint { fill: none; stroke: var(--ink-2); stroke-width: 2; stroke-linecap: round; opacity: 0.35; }
.art-lens { animation: lens 8s var(--ease) infinite alternate; }
@keyframes lens { from { transform: translate(-92px, 18px); } to { transform: translate(14px, -8px); } }
.empty-copy { display: grid; gap: 14px; }
.empty-copy h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
.empty-copy p { max-width: 52ch; }
.empty-list { list-style: none; padding: 0; margin: 6px 0 0; display: grid; gap: 10px; color: var(--ink-2); }
.empty-list li { display: flex; gap: 10px; align-items: flex-start; }
.empty-list .icon { color: var(--accent); margin-top: 2px; }
@media (max-width: 767px) { .empty { grid-template-columns: 1fr; } .empty-art { max-width: 260px; } }
.sk-badge { width: 140px; height: 34px; border-radius: var(--r-pill); }
.answer .sk-line, .bezel-core > .sk-line { height: 22px; margin-top: 16px; }
.sk-claim { height: 64px; margin-top: 14px; }
.answer-bezel.error .bezel-core { box-shadow: inset 0 0 0 1px var(--bad), var(--inner-hi); }
.error-body { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 18px; }
.error-body > .icon { color: var(--bad); margin-top: 4px; }
.error-body h2 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin-bottom: 8px; }

/* ---------- Answer card ---------- */
.answer-stack { display: grid; gap: 20px; min-width: 0; }
.enter > * { animation: rise 900ms var(--ease) both; animation-delay: calc(var(--i, 0) * 90ms); }
.answer { display: grid; gap: 0; }
.answer-top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.asked { display: grid; gap: 8px; justify-items: start; margin-top: 22px; }
.asked-text { color: var(--ink-2); font-size: 0.95rem; overflow-wrap: anywhere; }
.answer-summary { font-size: clamp(1.7rem, 3.2vw, 2.5rem); line-height: 1.16; margin: 22px 0 26px; max-width: 30ch; }
.answer-summary:focus { outline: none; }
.answer h3 { font: 600 0.7rem var(--font-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.claims { list-style: none; margin: 0; padding: 0; }
.claim { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 10px; padding: 18px 0; border-top: var(--hair); }
.claim-n { color: var(--brass-text); padding-top: 5px; }
.claim-text { font-size: 1.04rem; line-height: 1.7; overflow-wrap: anywhere; }
.cite-chip { position: relative; display: inline-grid; place-items: center; min-width: 26px; height: 26px; padding: 0 7px; margin-inline: 3px 1px; vertical-align: 1px; border-radius: var(--r-pill); background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); font: 600 0.72rem var(--font-mono); transition: background-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease); }
button.cite-chip::after { content: ""; position: absolute; inset: -9px -5px; }
button.cite-chip:hover { background: var(--accent); color: var(--accent-ink); transform: translateY(-1px); }
.cite-chip.unmatched { background: var(--bad-soft); color: var(--bad); border: 1px dashed var(--bad); }
.cite-chip.static { margin: 0; }
.no-cite { display: inline-block; margin-left: 6px; padding: 2px 10px; border-radius: var(--r-pill); border: 1px dashed var(--brass); color: var(--brass-text); font-size: 0.72rem; vertical-align: 1px; }
.callout { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: start; padding: 16px 18px; border-radius: var(--r-sm); margin-top: 18px; background: var(--paper-2); }
.callout .icon { margin-top: 2px; }
.callout strong { display: block; font-weight: 600; margin-bottom: 2px; }
.callout.info { background: color-mix(in srgb, var(--info) 10%, var(--surface)); } .callout.info .icon { color: var(--info); }
.callout.warn { background: var(--brass-soft); } .callout.warn .icon { color: var(--brass-text); }
.callout.bad { background: var(--bad-soft); } .callout.bad .icon { color: var(--bad); }
.caveats { margin-top: 24px; }
.caveats ul { margin: 0; padding-left: 1.2em; display: grid; gap: 8px; color: var(--ink-2); }
.validation { display: flex; align-items: center; gap: 10px; margin-top: 22px; font-size: 0.86rem; }
.validation.ok { color: var(--ok); } .validation.warn { color: var(--brass-text); }
.sources { margin-top: 28px; }
.source-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.source-item { width: 100%; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 14px; align-items: center; text-align: left; padding: 12px 16px; border-radius: var(--r-sm); border: var(--hair); background: var(--paper); transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease); }
.source-item:hover { transform: translateY(-1px); border-color: var(--accent); }
.source-item.is-cited { border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.source-item > .icon { color: var(--muted); }
.source-text { display: grid; min-width: 0; }
.source-title { font-weight: 500; overflow-wrap: anywhere; }
.answer-foot { margin-top: 22px; }
.audit-id { font-size: 0.72rem; color: var(--muted); }

/* ---------- Calculation card ---------- */
.calc { display: grid; gap: 14px; }
.calc-head { display: flex; align-items: flex-start; gap: 16px; color: var(--brass-text); }
.calc-head h3 { color: var(--ink); font-size: 1.35rem; margin-top: 8px; }
.calc h4 { font: 600 0.7rem var(--font-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.calc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-block: 6px; }
.calc-inputs ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.input-chip { display: inline-flex; align-items: center; gap: 12px; padding: 9px 14px; border-radius: var(--r-pill); border: var(--hair); background: var(--paper); font-size: 0.86rem; transition: border-color var(--dur-2) var(--ease), transform var(--dur-1) var(--ease); }
button.input-chip:hover { border-color: var(--accent); transform: translateY(-1px); }
.input-chip .mono { color: var(--accent); font-weight: 600; }
.equation { font-family: var(--font-display); font-style: italic; font-size: 1.35rem; padding: 14px 18px; border-radius: var(--r-sm); background: var(--paper-2); border-left: 3px solid var(--brass); margin-bottom: 10px; }
.quote { margin: 12px 0; padding: 14px 18px; border-left: 3px solid var(--brass); background: var(--paper-2); border-radius: 0 var(--r-sm) var(--r-sm) 0; font-family: var(--font-display); font-size: 1.05rem; line-height: 1.5; overflow-wrap: anywhere; }
.calc-result .step-args { margin-top: 8px; }
.calc > .btn { width: max-content; }
@media (max-width: 767px) { .calc-grid { grid-template-columns: 1fr; } }

/* ---------- Evidence drawer ---------- */
dialog.drawer { position: fixed; inset: 0 0 0 auto; margin: 0; width: min(540px, 100vw); max-width: 100vw; height: 100dvh; max-height: none; padding: 0; border: 0; border-left: var(--hair); background: var(--surface); color: var(--ink); box-shadow: var(--shadow-lift); transform: translateX(104%); transition: transform 420ms var(--ease); }
dialog.drawer.open { transform: none; }
dialog.drawer::backdrop { opacity: 0; transition: opacity 420ms var(--ease); }
dialog.drawer.open::backdrop { opacity: 1; }
.drawer-body { display: grid; gap: 18px; align-content: start; height: 100%; overflow: auto; padding: 22px 28px 32px; }
.drawer-top { display: flex; justify-content: space-between; align-items: center; }
.drawer-label { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.drawer-title { font-size: clamp(1.6rem, 3vw, 2.1rem); line-height: 1.12; overflow-wrap: anywhere; }
.facts { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 10px 20px; margin: 0; padding: 18px 0; border-block: var(--hair); }
.facts dt { font: 500 0.68rem var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); padding-top: 3px; }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.facts.compact { padding: 10px 0 0; border: 0; gap: 4px 14px; font-size: 0.8rem; }
.quote-block h3 { font: 600 0.7rem var(--font-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.drawer-actions { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.drawer-nav { display: flex; align-items: center; gap: 8px; }
.icon-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.source-link { display: inline-flex; align-items: center; gap: 10px; }
.source-link.btn { text-decoration: none; padding-right: 16px; }
@media (max-width: 767px) {
  dialog.drawer { inset: auto 0 0 0; width: 100vw; height: 90dvh; border-left: 0; border-top: var(--hair); border-radius: var(--r-lg) var(--r-lg) 0 0; transform: translateY(104%); }
  .drawer-body { padding: 18px 20px 28px; }
}

/* ---------- Activity ---------- */
.activity { display: grid; gap: 16px; }
.activity-head { display: grid; gap: 4px; }
.activity-title { font-size: 1.7rem; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; }
.step { position: relative; display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 12px; align-items: start; padding: 10px 0; }
.step::before { content: ""; position: absolute; left: 13.5px; top: 38px; bottom: -10px; width: 1px; background: var(--line-strong); }
.step:last-child::before { display: none; }
.step-mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line-strong); color: var(--muted); background: var(--surface); position: relative; z-index: 1; }
.step-mark .icon { width: 15px; height: 15px; stroke-width: 1.6; }
.step.ok .step-mark { color: var(--ok); border-color: var(--ok); background: color-mix(in srgb, var(--ok) 10%, var(--surface)); }
.step.warn .step-mark { color: var(--brass-text); border-color: var(--brass); background: var(--brass-soft); }
.step.bad .step-mark { color: var(--bad); border-color: var(--bad); background: var(--bad-soft); }
.step.idle .step-mark { border-style: dashed; }
.step.active .step-mark { border-color: transparent; }
.step.active .step-mark::after { content: ""; position: absolute; inset: -1px; border-radius: 50%; border: 2px solid transparent; border-top-color: var(--accent); border-right-color: var(--accent); animation: spin 1s var(--ease) infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.step-body { display: grid; min-width: 0; padding-top: 3px; }
.step-name { font-weight: 500; overflow-wrap: anywhere; }
.step-name.mono { font-size: 0.88rem; color: var(--accent); }
.step-note { overflow-wrap: anywhere; }
.step-side { display: grid; justify-items: end; gap: 6px; padding-top: 4px; }
.step-time { font-size: 0.74rem; color: var(--ink-2); }
.step-bar { width: 56px; height: 4px; border-radius: 4px; background: var(--paper-3); overflow: hidden; }
.step-fill { display: block; height: 100%; background: var(--accent); transform-origin: left; border-radius: 4px; }
.step-args { grid-column: 2 / -1; }
.step-args summary { cursor: pointer; color: var(--ink-2); padding: 2px 0; }
.step-args .facts dd { font-size: 0.78rem; }
.steps.ghost { opacity: 0.5; }
.run-line { display: grid; gap: 6px; margin-top: 4px; padding-top: 16px; border-top: var(--hair); font-family: var(--font-mono); font-size: 0.76rem; color: var(--ink-2); }
.run-row { display: flex; align-items: center; gap: 10px; }
.run-row .icon { width: 16px; height: 16px; }
.elapsed { margin-top: 6px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-2); }
.rail-note { padding-inline: 8px; }

/* ---------- Feedback + notes ---------- */
.feedback { display: grid; gap: 14px; }
.feedback h3 { font-size: 1.35rem; }
.rating { display: flex; gap: 8px; flex-wrap: wrap; }
.rate-btn { display: inline-flex; align-items: center; gap: 10px; padding: 9px 18px 9px 14px; border-radius: var(--r-pill); border: 1px solid var(--line-strong); background: var(--surface); font-size: 0.9rem; transition: background-color var(--dur-2) var(--ease), color var(--dur-2) var(--ease), transform var(--dur-1) var(--ease); }
.rate-btn:hover { background: color-mix(in srgb, var(--ink) 6%, var(--surface)); }
.rate-btn:active { transform: scale(0.97); }
.rate-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.feedback-tags { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; }
.feedback-tags legend { font-size: 0.8rem; font-weight: 500; color: var(--ink-2); padding: 0; margin-bottom: 8px; width: 100%; }
.feedback-tags label { position: relative; display: inline-flex; }
.feedback-tags input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.feedback-tags label span { padding: 7px 14px; border-radius: var(--r-pill); border: 1px solid var(--line-strong); font-size: 0.82rem; background: var(--surface); transition: background-color var(--dur-2) var(--ease), color var(--dur-2) var(--ease); }
.feedback-tags label:has(input:checked) span { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.feedback-tags label:has(input:focus-visible) span { outline: 2px solid var(--accent); outline-offset: 3px; }
.form-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
.feedback-msg { color: var(--ink-2); }
.notes { display: grid; gap: 10px; }
.data-notes h3 { font-size: 1.3rem; margin-bottom: 6px; }
.detail-list { margin: 8px 0 0; padding-left: 1.1em; display: grid; gap: 6px; color: var(--ink-2); font-size: 0.9rem; }
.evidence-fields { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 8px 0 0; font-size: 0.86rem; }
.evidence-fields dt { color: var(--muted); } .evidence-fields dd { margin: 0; }

body:has(dialog[open]) .nav-wrap { opacity: 0; pointer-events: none; transition: opacity var(--dur-2) var(--ease); }

/* ---------- Standalone page: wide instrument layout ---------- */
.standalone-workbench .wb-grid { grid-template-columns: minmax(0, 1fr) 400px; }
@media (min-width: 1280px) {
  .standalone-workbench .answer-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .standalone-workbench .answer-stack > * { grid-column: 1 / -1; }
  .standalone-workbench .answer-stack > .explanation-bezel,
  .standalone-workbench .answer-stack > .sources-bezel { grid-column: auto; }
}
@media (max-width: 1100px) { .standalone-workbench .wb-grid { grid-template-columns: minmax(0, 1fr); } }
.session-history .history-list { list-style: none; margin: 12px 0; padding: 0; display: grid; gap: 6px; max-height: 240px; overflow: auto; }
.history-question { width: 100%; text-align: left; padding: 9px 12px; border-radius: var(--r-sm); border: var(--hair); background: var(--paper); font-size: 0.84rem; line-height: 1.35; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.history-question:hover { border-color: var(--accent); }
.history-list:empty::before { content: "No questions yet."; font-size: 0.84rem; color: var(--muted); }
.explanation h2, .sources h3 { margin-bottom: 8px; }
.explanation-steps { margin: 12px 0; padding-left: 1.3em; display: grid; gap: 8px; color: var(--ink-2); }
.explanation p { margin-top: 10px; overflow-wrap: anywhere; }
.explanation h3 { font: 600 0.7rem var(--font-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin: 16px 0 8px; }
.source-details { display: block; overflow-wrap: anywhere; margin-top: 4px; }
.source-list li { display: grid; gap: 6px; }
.source-list li > .source-link { justify-self: start; font-size: 0.82rem; }
.sources > h3 { font: 600 0.7rem var(--font-mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }