/* Claim Evidence Review — a quiet, document-like system: warm paper, hairline rules, ink navy for actions,
   a brass accent for legal text, serif for headings and legal text, sans for controls. */
:root {
  color-scheme: light;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-serif: "Iowan Old Style", "Charter", "Georgia", "Times New Roman", serif;
  --ink: #161a21;
  --ink-2: #3b4350;
  --muted: #5f6774;
  --subtle: #8d939c;
  --line: #e8e5df;
  --line-strong: #d7d2c9;
  --bg: #f7f6f3;
  --surface: #fff;
  --surface-2: #fbfaf8;
  --primary: #1f3a5f;
  --primary-hover: #172d4b;
  --primary-soft: #f0f3f7;
  --primary-line: #cfd8e4;
  --focus: #8aa4c6;
  --accent: #a3844c;
  --ok: #2b6a4c;
  --ok-soft: #e8f2ec;
  --warn: #7a5200;
  --warn-soft: #fbf5e6;
  --warn-line: #eadbb0;
  --bad: #9b3128;
  --bad-soft: #fbeeec;
  --claim-soft: #fbf8f0;
  --claim-line: #d9c597;
  --shadow: 0 1px 2px rgba(22, 26, 33, .04);
  --radius: 14px;
  --content: 880px;
}

/* Base */
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { background: var(--bg); }
body {
  margin: 0; font-family: var(--font-sans); font-size: 15px; line-height: 1.6; color: var(--ink); background: var(--bg);
  font-synthesis: none; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, p { margin: 0; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
summary { cursor: pointer; }
.visually-hidden, .saved-review #question-label {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link { position: absolute; top: -100px; left: 16px; z-index: 30; padding: 10px 14px; background: var(--surface); border-radius: 8px; }
.skip-link:focus { top: 8px; }

/* Disclosure chevron shared by collapsible sections */
.materials-summary, .element-map > summary, details.answer-section > summary, details.obviousness-section > summary, .field-tips > summary { list-style: none; }
.materials-summary::-webkit-details-marker, .element-map > summary::-webkit-details-marker,
details.answer-section > summary::-webkit-details-marker, details.obviousness-section > summary::-webkit-details-marker,
.status-menu > summary::-webkit-details-marker, .field-tips > summary::-webkit-details-marker { display: none; }
.materials-summary::before, .element-map > summary::before, details.answer-section > summary::before, details.obviousness-section > summary::before {
  content: ""; flex-shrink: 0; width: 7px; height: 7px; margin: 0 4px 0 2px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(-45deg);
}
.materials[open] > .materials-summary::before, .element-map[open] > summary::before,
details.answer-section[open] > summary::before, details.obviousness-section[open] > summary::before { transform: rotate(45deg); margin-top: -4px; }

/* Header */
.app-header {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: 64px; padding: 10px max(24px, calc((100vw - var(--content)) / 2));
  background: rgba(251, 250, 248, .92); border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: saturate(1.4) blur(8px); backdrop-filter: saturate(1.4) blur(8px);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand img { flex-shrink: 0; border-radius: 7px; }
.brand-name { font-family: var(--font-serif); font-size: 18px; font-weight: 600; letter-spacing: -.005em; white-space: nowrap; }
.header-actions { display: flex; align-items: center; gap: 4px; }
.ghost-button { white-space: nowrap; padding: 7px 12px; border: 0; border-radius: 8px; background: transparent; color: var(--ink-2); font-size: 14px; font-weight: 500; }
.ghost-button:hover:not(:disabled) { background: #efede8; color: var(--ink); }
.ghost-button:disabled { color: var(--subtle); }

.status-menu { position: relative; margin-left: 8px; }
.status-menu > summary {
  display: flex; align-items: center; padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface);
  list-style: none; font-size: 13px; white-space: nowrap;
}
.status-menu > summary:hover { border-color: var(--line-strong); }
.status-menu[open] > summary { border-color: var(--primary-line); background: var(--primary-soft); }
.status { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--muted); }
.status::before { content: ""; flex-shrink: 0; width: 8px; height: 8px; border-radius: 50%; background: #a3acb8; }
.status[data-state="ok"] { color: var(--ok); }
.status[data-state="ok"]::before { background: #3b8b65; box-shadow: 0 0 0 3px #3b8b6522; }
.status[data-state="error"] { color: var(--bad); }
.status[data-state="error"]::before { background: #c4473c; }
.status[data-state="checking"]::before { background: #c99a2e; }
/* A model problem shows on the header pill even while the menu is closed. */
.status-menu:has(#model-status[data-state="error"]) > summary .status::before { background: #c99a2e; box-shadow: 0 0 0 3px #c99a2e2e; }
.status-popover {
  position: absolute; top: calc(100% + 8px); right: 0; z-index: 20; display: grid; gap: 8px; width: min(340px, calc(100vw - 32px));
  padding: 16px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 12px 32px rgba(16, 24, 40, .14);
}
.popover-title { font-size: 12px; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
#model-message { font-size: 14px; color: var(--ink-2); }
.status-popover .field-help { margin: 0; }
.popover-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 4px; }
.popover-actions .text-button { white-space: nowrap; }
.login-help { color: var(--primary); font-size: 13px; font-weight: 500; text-underline-offset: 3px; }

/* Page */
.page { max-width: calc(var(--content) + 48px); margin: 0 auto; padding: 52px 24px 88px; }
.workspace-heading { margin-bottom: 10px; }
.page:has(.saved-review) .workspace-heading { margin-bottom: 24px; }
.page:not(:has(.saved-review)) .eyebrow { display: none; }
.eyebrow { margin-bottom: 10px; font-size: 11.5px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
#review-title { font-family: var(--font-serif); font-size: 38px; font-weight: 500; letter-spacing: -.012em; line-height: 1.2; overflow-wrap: anywhere; }
.page:has(.saved-review) #review-title { font-size: 29px; line-height: 1.3; }
.intro { margin-bottom: 36px; }
#review-message { max-width: 62ch; font-size: 16px; line-height: 1.6; color: var(--muted); }
.notice {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px;
  padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); font-size: 14px;
}
.notice-warning { border-color: var(--warn-line); background: var(--warn-soft); color: #4a3600; }
.workspace-actions { display: flex; flex-wrap: wrap; flex-shrink: 0; gap: 8px; }

/* Buttons */
.primary-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 9px 18px; border: 1px solid var(--primary);
  border-radius: 9px; background: var(--primary); color: #fff; font-size: 14px; font-weight: 600; letter-spacing: .005em; white-space: nowrap;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1), 0 1px 2px rgba(22, 26, 33, .16);
}
.primary-button:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); }
.primary-button:disabled { border-color: #ebe8e2; background: #ebe8e2; color: #959aa2; box-shadow: none; }
.send-button { padding: 11px 24px; font-size: 15px; }
.secondary-button {
  display: inline-flex; align-items: center; justify-content: center; padding: 8px 14px; border: 1px solid var(--line-strong);
  border-radius: 9px; background: var(--surface); color: var(--ink); font-size: 14px; font-weight: 500;
}
.secondary-button:hover:not(:disabled) { border-color: #bdb6aa; background: var(--surface-2); }
.secondary-button:disabled { color: var(--subtle); background: var(--surface-2); }
.text-button {
  padding: 4px 2px; border: 0; background: transparent; color: var(--primary); font-size: 13px; font-weight: 500;
  text-decoration: underline; text-decoration-color: #1f3a5f59; text-underline-offset: 3px;
}
.text-button:hover:not(:disabled) { text-decoration-color: currentColor; }
.text-button:disabled { color: var(--subtle); }

/* Panels */
.workspace { display: grid; gap: 24px; }
.panel { min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.quiet-label { font-size: 13px; font-weight: 500; color: var(--muted); }
.materials-summary { display: flex; align-items: center; gap: 10px; padding: 20px 28px; font-size: 16px; font-weight: 600; }
.materials-summary .quiet-label { margin-left: auto; }
.workspace:not(.saved-review) #input-version { display: none; }
.materials-body { padding: 2px 28px 30px; }
.material-actions { display: flex; align-items: center; gap: 12px; margin: 0 0 16px; }
#material-feedback { margin: 0 0 16px; }
#material-feedback[data-error="true"] { color: var(--bad); }

/* Review type: a two-way segmented control */
.review-type {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; margin: 0 0 28px; padding: 4px; min-width: 0;
  border: 0; border-radius: 11px; background: #f0eee9;
}
.review-type-option {
  position: relative; display: flex; align-items: center; justify-content: center; margin: 0; padding: 9px 12px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: var(--muted); text-align: center; cursor: pointer;
}
.review-type-option:hover { color: var(--ink); }
.review-type-option:has(input:checked) { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: 0 1px 2px rgba(22, 26, 33, .08), 0 0 0 1px rgba(22, 26, 33, .04); }
.review-type-option:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 1px; }
.review-type-option:has(input:disabled) { cursor: default; }
.review-type-option input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: inherit; }
.review-type-label { display: inline-block; margin: 0 0 22px; padding: 4px 11px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-size: 13px; font-weight: 600; }

/* Fields: help text on the left, character count on the right of the same line */
.field, .composer { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 16px; }
.field > *, .composer > * { grid-column: 1 / -1; }
.field > .field-help, .composer > .field-help { grid-column: 1; }
.field > .character-count, .composer > .character-count { grid-column: 2; }
.field > button, .field > .date-input { justify-self: start; }
.field { margin-top: 28px; }
.review-type-label + .field, .obviousness-materials > .field:first-child { margin-top: 0; }
label { display: flex; align-items: center; gap: 8px; margin-bottom: 9px; font-size: 14px; font-weight: 600; color: var(--ink-2); }
.label-like { display: flex; align-items: center; gap: 8px; margin-bottom: 9px; font-size: 14px; font-weight: 600; color: var(--ink-2); }
.requirement { margin-left: auto; font-size: 12px; font-weight: 400; color: var(--subtle); }
textarea, .text-input, #review-search {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--surface);
  color: var(--ink); font-size: 15px; line-height: 1.6;
}
textarea { display: block; min-height: 104px; resize: vertical; overflow-wrap: anywhere; }
.text-input { display: block; padding: 9px 14px; }
textarea::placeholder, input::placeholder { color: var(--subtle); }
textarea:hover, .text-input:hover, #review-search:hover { border-color: #c3bcb0; }
textarea:focus, .text-input:focus, #review-search:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px #1f3a5f1a; }
textarea[readonly], .text-input[readonly] { background: var(--surface-2); color: var(--ink-2); }
textarea[aria-invalid="true"], .text-input[aria-invalid="true"] { border-color: var(--bad); background: #fffafa; }
.field-help { margin-top: 6px; font-size: 13px; line-height: 1.5; color: var(--muted); }
.character-count { max-width: 300px; margin-top: 6px; font-size: 12px; color: var(--subtle); text-align: right; font-variant-numeric: tabular-nums; }
.field-error { margin-top: 6px; font-size: 13px; font-weight: 500; color: var(--bad); }
/* Hints and character counts appear only while their field is in use (a missing-images note always shows). */
.field:not(:focus-within) > .hint, .composer:not(:focus-within) > .hint, .reference-source:not(:focus-within) > .hint,
.field:not(:focus-within) > .character-count:not(.has-note), .composer:not(:focus-within) > .character-count,
.reference-card:not(:focus-within) > .character-count:not(.has-note) { display: none; }
.field-tips { margin: 0 0 4px; font-size: 13px; }
.field-tips > summary { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 500; }
.field-tips > summary::before {
  content: ""; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(-45deg);
}
.field-tips[open] > summary::before { transform: rotate(45deg); margin-top: -3px; }
.field-tips > .field-help { max-width: 72ch; }
.date-input { max-width: 220px; }
.patent-import { margin-top: 10px; }
#patent-status[data-error="true"] { color: var(--bad); }
input[type="file"] { font-size: 14px; }

/* Conversation and composer */
.conversation { display: flex; flex-direction: column; }
.conversation > .composer { display: grid; }
.conversation-heading { justify-content: flex-start; padding: 16px 28px 0; }
#refresh-thread { margin-left: auto; }
.conversation:has(#history-toggle[aria-expanded="false"]) .turn-superseded { display: none; }
.workspace:not(.saved-review) .conversation-heading { display: none; }
.composer { padding: 24px 28px 26px; }
.saved-review .composer { border-top: 1px solid var(--line); border-radius: 0 0 var(--radius) var(--radius); background: var(--surface-2); }
.composer textarea { min-height: 88px; }
.composer-version { margin-bottom: 8px; font-size: 14px; font-weight: 600; color: var(--ink); }
.question-presets { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.preset-button { padding: 5px 13px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface); color: var(--ink-2); font-size: 13px; font-weight: 500; }
.preset-button:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.send-note { display: flex; align-items: flex-start; gap: 8px; max-width: 60ch; font-size: 12.5px; line-height: 1.5; color: var(--muted); }
.send-note::before {
  content: ""; flex-shrink: 0; width: 15px; height: 15px; margin-top: 1px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%235f6b7a' stroke-width='1.4'%3E%3Ccircle cx='8' cy='8' r='6.6'/%3E%3Cpath d='M8 7.3v4.2M8 4.7v.3' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat center / 16px;
}
.send-note .notice-label { display: none; }
.composer-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 14px; }
#analysis-status { margin-top: 10px; font-size: 13px; color: var(--muted); }
#analysis-status:empty { display: none; }
#analysis-status[data-error="true"] { font-weight: 500; color: var(--bad); }

.analysis-panel {
  position: relative; overflow: hidden; margin: 0 28px 18px; padding: 16px 18px; border: 1px solid var(--primary-line);
  border-radius: 10px; background: var(--primary-soft);
}
.analysis-panel > p:first-child { font-weight: 600; }
.analysis-panel:is([data-status="failed"], [data-status="interrupted"], [data-status="save_failed"], [data-status="unknown"]) { border-color: var(--warn-line); background: var(--warn-soft); }
#analysis-elapsed { font-variant-numeric: tabular-nums; }
.analysis-panel .workspace-actions { align-items: center; margin-top: 10px; }
.analysis-panel:has(#stop-analysis:not([hidden]))::before {
  content: ""; position: absolute; top: 0; left: 0; width: 35%; height: 3px; background: var(--primary);
  animation: analysis-progress 1.6s ease-in-out infinite;
}
@keyframes analysis-progress { from { transform: translateX(-100%); } to { transform: translateX(300%); } }

/* Saved questions */
.turn-list { margin-top: -6px; padding: 0 28px 8px; }
.turn-card { padding: 20px 0 28px; border-bottom: 1px solid var(--line); scroll-margin-top: 80px; }
.turn-card:last-child { border-bottom: 0; }
.turn-card > .field-help { margin: 0 0 8px; }
.turn-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; margin-bottom: 14px; font-size: 13px; color: var(--muted); }
.turn-meta strong { font-size: 11.5px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.turn-meta [data-version-view] { margin-left: auto; }
.turn-question {
  padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2);
  font-size: 15px; line-height: 1.7; white-space: pre-wrap; overflow-wrap: anywhere;
}
.turn-question-details { margin-bottom: 14px; }
.turn-question-details > summary { font-size: 14px; font-weight: 500; line-height: 1.6; color: var(--ink-2); }
.turn-question-details[open] .turn-question { margin-top: 8px; }
.turn-answer-heading { margin: 18px 0 8px; font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.turn-status { margin-top: 14px; font-size: 12px; color: var(--subtle); }
.turn-card > button[data-analysis-action] { margin-top: 12px; }
/* Failed attempts that were retried collapse to one quiet line. */
.turn-card.turn-superseded { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 14px; padding: 10px 0; color: var(--muted); }
.turn-superseded .turn-meta { margin: 0; }
.turn-superseded .turn-meta [data-version-view] { margin-left: 0; }
.turn-superseded .turn-meta strong { font-size: 13px; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--muted); }
.turn-superseded .turn-question, .turn-superseded > .field-help:not(:last-child) { display: none; }
.turn-superseded .turn-status, .turn-superseded > .field-help { margin: 0; font-size: 13px; color: var(--muted); }

/* Answer */
.answer-overview { margin-top: 4px; padding: 2px 0 4px 24px; border-left: 2px solid var(--accent); }
.answer-overview > h4 {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 8px;
  font-size: 12px; font-weight: 650; letter-spacing: .07em; text-transform: uppercase; color: var(--primary);
}
.answer-overview .answer-fragment, .answer-overview > p:not([class]) { font-family: var(--font-serif); font-size: 21px; line-height: 1.55; letter-spacing: -.003em; color: var(--ink); }
.answer-overview-scope { margin-top: 12px; font-size: 13px; color: var(--muted); }
.turn-answer { margin-top: 16px; font-size: 15px; line-height: 1.75; overflow-wrap: anywhere; }
.turn-question + .turn-answer, .turn-answer-heading + .turn-answer { margin-top: 0; }
.answer-fragment { white-space: pre-wrap; }
.answer-section + .answer-section { margin-top: 12px; }
.answer-fragment h4 { margin-bottom: 6px; font-size: 14px; font-weight: 650; }
.answer-summary { padding: 2px 0 4px 24px; border-left: 2px solid var(--accent); }
.answer-summary > h4 { margin-bottom: 6px; font-size: 12px; font-weight: 650; letter-spacing: .07em; text-transform: uppercase; color: var(--primary); }
.answer-summary .answer-fragment { font-family: var(--font-serif); font-size: 20px; line-height: 1.55; }
.answer-scope { font-size: 14px; color: var(--muted); }
details.answer-section { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
details.answer-section > summary { display: flex; align-items: center; gap: 10px; padding: 14px 20px; font-weight: 600; }
details.answer-section[open] > summary { border-bottom: 1px solid var(--line); }
details.answer-section > .answer-fragment { padding: 16px 20px; }
details.answer-section > .citation-list { margin: 0; padding: 0 20px 16px; }
.answer-key-sources { margin: 16px 0; }
.answer-key-sources h4 { font-size: 12px; font-weight: 650; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
.answer-key-sources ul { margin: 6px 0 0; padding: 0; list-style: none; }
.answer-key-sources li { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: start; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.key-source-title { font-size: 14px; line-height: 1.6; }
.key-source-locations { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; max-width: 280px; }
.required-inputs { margin-top: 12px; padding: 16px 20px; border: 1px solid var(--warn-line); border-radius: 10px; background: var(--warn-soft); font-size: 15px; font-weight: 400; }
.required-inputs > h4 { font-size: 14px; font-weight: 650; color: var(--warn); }
.required-inputs ul { margin: 6px 0 0; padding-left: 20px; }
.required-inputs li + li { margin-top: 6px; }

/* Evidence links */
.citation-link {
  display: inline; margin: 0 1px; padding: 1px 6px; border: 1px solid var(--primary-line); border-radius: 6px;
  background: var(--surface); color: var(--primary); font-family: var(--font-sans); font-size: .8em; font-weight: 500;
  line-height: 1.4; text-decoration: none; vertical-align: 1px; white-space: nowrap;
}
.citation-link:hover { border-color: #9fb3cd; background: var(--primary-soft); }
.answer-overview .citation-link, .answer-summary .citation-link {
  margin: 0; padding: 0 1px; border: 0; border-radius: 3px; background: none; font-size: .62em; font-weight: 600; vertical-align: .55em; line-height: 1;
}
.answer-overview .citation-link:hover, .answer-summary .citation-link:hover { background: var(--primary-soft); text-decoration: underline; }
.issue-sources .citation-link, .key-source-locations .citation-link, .citation-list .citation-link { padding: 2px 9px; font-size: 12.5px; text-align: left; white-space: normal; vertical-align: baseline; }
.citation-list { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 14px; font-size: 13px; color: var(--muted); }
.citation-list > span:first-child { margin-right: 4px; font-weight: 600; }

/* Issue cards */
.issue-cards { display: grid; gap: 20px; margin-top: 28px; }
.issue-cards-heading { font-size: 12px; font-weight: 650; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
.issue-card { overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); scroll-margin-top: 80px; }
.issue-title {
  display: flex; flex-direction: column; gap: 4px; padding: 18px 24px 16px; border-bottom: 1px solid var(--line);
  font-family: var(--font-serif); font-size: 20px; font-weight: 600; line-height: 1.35; overflow-wrap: anywhere;
}
.issue-number { flex-shrink: 0; font-family: var(--font-sans); font-size: 11.5px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.issue-field { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 20px; padding: 18px 24px; }
.issue-field + .issue-field { border-top: 1px solid var(--line); }
.issue-field h5 { margin-top: 4px; font-size: 11.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.issue-value { min-width: 0; font-size: 15px; line-height: 1.7; overflow-wrap: anywhere; }
.issue-value blockquote { margin: 0; white-space: pre-wrap; }
.issue-wording blockquote {
  padding: 1px 0 1px 14px; border-left: 2px solid var(--claim-line);
  color: #2f2a1f; font-family: var(--font-serif); font-size: 16px; line-height: 1.6;
}
.issue-wording blockquote + blockquote { margin-top: 10px; }
.issue-opinion .issue-value { font-size: 16px; font-weight: 500; line-height: 1.7; color: var(--ink); }
.issue-amendment .amendment-text {
  margin-bottom: 8px; padding: 10px 14px; border-left: 2px solid var(--primary); border-radius: 0 8px 8px 0;
  background: var(--primary-soft); font-family: var(--font-serif); font-size: 16px;
}
.issue-amendment .issue-value > strong { display: block; margin-bottom: 4px; font-size: 14px; font-weight: 600; }
.conditional-wording { color: var(--warn); }
.amendment-support, .input-basis { margin-top: 10px; font-size: 13px; }
.amendment-support > summary, .input-basis > summary { font-weight: 500; color: var(--primary); }
.amendment-support > strong, .input-basis > strong { display: block; margin-top: 10px; font-weight: 600; color: var(--ink-2); }
.amendment-support blockquote, .input-basis blockquote {
  margin: 6px 0 0; padding: 8px 12px; border-left: 2px solid var(--line-strong); background: var(--surface-2);
  color: var(--ink-2); white-space: pre-wrap; overflow-wrap: anywhere;
}
.input-basis > p { margin-top: 4px; }
.input-based-label { display: inline-block; margin-bottom: 6px; padding: 1px 9px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface-2); font-size: 12px; font-weight: 600; color: var(--ink-2); }
/* Each source on one line: its name, then its evidence links. */
.issue-sources { display: grid; gap: 8px; margin: 14px 0 0; padding: 0; list-style: none; }
.issue-sources li { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; }
/* Source names are stored in capitals; small capitals keep case names legible and quiet. */
.issue-source-title { font-family: var(--font-serif); font-size: 15px; font-weight: 500; font-variant-caps: all-small-caps; letter-spacing: .04em; color: var(--ink-2); }
.issue-source-links { display: flex; flex-wrap: wrap; gap: 6px; }
.issue-sources .issue-source-note { flex-basis: 100%; margin-top: 0; }
.issue-source-location { display: block; margin: 2px 5px; font-size: 11px; color: var(--muted); }
.issue-source-note, .issue-linguistic { margin-top: 6px; font-size: 13px; color: var(--muted); }

/* Claim element map and caveats */
.element-map, .answer-caveats { margin-top: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.element-map > summary { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; padding: 15px 22px; }
.element-map[open] > summary { border-bottom: 1px solid var(--line); }
.element-map-title { font-weight: 600; }
.element-map-counts { font-size: 13px; color: var(--muted); }
.element-map-body { padding: 16px 22px 20px; }
.element-map-meta { margin: 0 0 6px; font-size: 13px; color: var(--muted); }
.element-rows { display: grid; gap: 14px; margin: 12px 0; padding: 0; list-style: none; }
.element-row { padding: 4px 0 4px 14px; border-left: 3px solid var(--line-strong); font-size: 14px; line-height: 1.65; }
.element-row p { margin-top: 4px; }
.element-row strong { font-weight: 600; color: var(--ink-2); }
.disclosure-express, .disclosure-inferred { border-left-color: #74b093; }
.disclosure-unclear { border-left-color: #d6ad4a; }
.disclosure-not_identified { border-left-color: #cf7168; }
.element-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.element-number { font-size: 13px; font-weight: 650; }
.element-badge { padding: 1px 9px; border-radius: 999px; background: var(--ok-soft); color: var(--ok); font-size: 12px; font-weight: 600; }
.disclosure-unclear .element-badge { background: var(--warn-soft); color: var(--warn); }
.disclosure-not_identified .element-badge { background: var(--bad-soft); color: var(--bad); }
.element-role { font-size: 12px; color: var(--muted); }
.element-claim {
  margin: 6px 0 0; padding: 1px 0 1px 12px; border-left: 2px solid var(--claim-line);
  font-family: var(--font-serif); font-size: 15px; white-space: pre-wrap; overflow-wrap: anywhere;
}
.element-gap { color: var(--ink-2); }
.element-mapping { display: flex; flex-wrap: wrap; gap: 2px 16px; }
.element-quotes { margin-top: 6px; font-size: 13px; }
.element-quotes > summary { color: var(--primary); }
.element-quotes blockquote { margin: 6px 0 0; padding: 6px 10px; border-left: 2px solid var(--line-strong); background: var(--surface-2); overflow-wrap: anywhere; }
.answer-caveats { padding: 18px 22px; background: var(--surface-2); font-size: 14px; line-height: 1.7; color: var(--ink-2); }
.answer-caveats > h4 { margin-bottom: 6px; font-size: 11.5px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.answer-caveats ul { margin: 4px 0 0; padding-left: 20px; }
.answer-caveats > strong { display: block; margin-top: 10px; font-size: 13px; }
.turn-answer:has(> .answer-full-details) { margin-top: 16px; }

/* Dialogs */
dialog { color: var(--ink); }
dialog::backdrop { background: rgba(15, 23, 35, .42); }
body:has(dialog[open]) { overflow: hidden; }
#reviews-dialog, #version-dialog {
  padding: 28px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); box-shadow: 0 24px 56px rgba(22, 26, 33, .18);
}
#reviews-dialog { width: min(720px, calc(100vw - 32px)); max-height: 88dvh; overflow-y: auto; }
#reviews-dialog[open] { display: flex; flex-direction: column; height: min(820px, 88dvh); }
#reviews-dialog > * { flex-shrink: 0; }
#reviews-title { font-family: var(--font-serif); font-size: 24px; font-weight: 500; }
#reviews-dialog > .field-help { margin-top: 4px; }
.review-search { margin-top: 16px; }
.review-search-controls { display: flex; gap: 8px; }
#review-search { flex: 1; min-width: 0; padding: 8px 12px; }
.reviews-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; }
#reviews-feedback { font-size: 13px; color: var(--muted); }
#reviews-list { display: grid; align-content: start; gap: 8px; flex: 1 1 auto; min-height: 80px; margin: 10px 0 12px; padding: 0; overflow-y: auto; overscroll-behavior: contain; list-style: none; }
.review-list-entry {
  display: block; width: 100%; padding: 15px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface);
  color: inherit; text-align: left; overflow-wrap: anywhere;
}
.review-list-entry:hover:not(:disabled) { border-color: var(--primary-line); background: var(--primary-soft); }
.review-list-entry[aria-current="true"] { border-color: var(--primary); box-shadow: inset 3px 0 0 var(--primary); }
.review-list-entry:disabled { background: var(--surface-2); color: var(--subtle); }
.review-entry-title { font-family: var(--font-serif); font-size: 17px; font-weight: 600; }
.review-current { display: inline-block; margin-left: 8px; padding: 1px 8px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-size: 12px; font-weight: 600; vertical-align: 1px; }
.review-entry-preview {
  display: -webkit-box; margin: 4px 0 6px; overflow: hidden; font-size: 14px; color: var(--ink-2); white-space: pre-wrap;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.review-entry-meta { display: block; font-size: 12px; color: var(--muted); }
.review-entry-title + .review-entry-meta { margin-top: 4px; }
.review-pagination { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-top: 12px; border-top: 1px solid var(--line); }
.review-switch-prompt, .review-active { margin-top: 14px; padding: 14px 16px; border: 1px solid var(--primary-line); border-radius: 10px; background: var(--primary-soft); font-size: 14px; }
.review-switch-prompt { border-color: var(--warn-line); background: var(--warn-soft); }
.review-switch-prompt .workspace-actions { margin-top: 10px; }
.review-active button { margin-top: 10px; }
#version-dialog { width: min(850px, calc(100vw - 32px)); max-height: 85vh; }
#version-dialog .field { margin-top: 20px; }
#version-dialog-title { font-family: var(--font-serif); font-size: 20px; font-weight: 500; }

/* Evidence drawer */
#citation-dialog {
  position: fixed; inset: 0 0 0 auto; width: min(860px, 96vw); height: 100dvh; max-width: none; max-height: none; margin: 0;
  padding: 0 32px 40px; border: 0; border-left: 1px solid var(--line); background: var(--surface);
  box-shadow: -16px 0 40px rgba(16, 24, 40, .12); overflow-y: auto; overflow-wrap: anywhere;
}
.citation-header {
  position: sticky; top: 0; z-index: 1; display: flex; align-items: flex-start; justify-content: space-between; gap: 18px;
  padding: 20px 0 14px; border-bottom: 1px solid var(--line); background: var(--surface);
}
#citation-title { margin-top: 4px; font-family: var(--font-serif); font-size: 22px; font-weight: 500; line-height: 1.35; }
#citation-title:focus { outline: none; }
#close-citation { flex-shrink: 0; }
.citation-navigation { display: flex; gap: 8px; margin: 16px 0; }
#citation-feedback { margin: 12px 0; font-size: 14px; }
#citation-content { font-size: 15px; line-height: 1.75; }
#citation-content p { margin: 8px 0; white-space: pre-wrap; }
#citation-content p > strong { font-weight: 600; color: var(--ink-2); }
.citation-location { font-weight: 600; color: var(--primary); }
.citation-section { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.citation-section h3 { margin-bottom: 10px; font-family: var(--font-serif); font-size: 18px; font-weight: 600; }
.source-quote {
  margin: 12px 0; padding: 4px 0 4px 20px; border-left: 2px solid var(--accent);
  color: var(--ink); font-family: var(--font-serif); font-size: 17px; line-height: 1.7; white-space: pre-wrap; overflow-wrap: anywhere;
}
.source-quote mark { padding: 0 2px; border-radius: 2px; background: #f6e7bd; color: inherit; }
.source-links { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.source-link { font-size: 14px; font-weight: 500; color: var(--primary); text-underline-offset: 3px; }
#citation-content details { margin-top: 14px; }
#citation-content summary { padding: 6px 0; font-weight: 600; color: var(--primary); }
.citation-warning { padding: 16px; border-radius: 8px; background: var(--warn-soft); }

/* §103 inputs */
.obviousness-materials { margin-top: 26px; }
.reference-list { display: grid; gap: 14px; margin: 14px 0; }
.reference-card { padding: 18px 20px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-2); }
.reference-card .text-input, .reference-card textarea { background: var(--surface); }
.reference-card textarea { min-height: 150px; }
.reference-card > .character-count { max-width: none; }
.reference-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.reference-label { font-family: var(--font-serif); font-size: 18px; font-weight: 600; color: var(--primary); }
.reference-summary { flex: 1; min-width: 0; font-size: 13px; color: var(--ink-2); overflow-wrap: anywhere; }
.reference-origin { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; margin: 0 0 12px; padding: 0; border: 0; }
.reference-origin legend { float: left; margin-right: 6px; padding: 0; font-size: 13px; color: var(--muted); }
.reference-origin label { gap: 6px; margin: 0; font-size: 14px; font-weight: 500; cursor: pointer; }
.reference-origin input { accent-color: var(--primary); }
.reference-source { margin-bottom: 12px; }
.reference-source label, .reference-meta label, .reference-card > label { margin-bottom: 6px; font-size: 13px; font-weight: 600; }
.inline-controls { display: flex; gap: 8px; }
.inline-controls .text-input { flex: 1; min-width: 0; }
.reference-status[data-error="true"] { color: var(--bad); }
.reference-details { margin: 0 0 14px; }
.reference-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px 12px; margin: 10px 0 4px; }
.reference-title { grid-column: span 2; }

/* §103 result */
.obviousness-result { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; margin-top: 12px; }
.obviousness-section { padding: 20px 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.obviousness-section > h4, .obviousness-section > summary { margin: 0 0 14px; font-family: var(--font-serif); font-size: 19px; font-weight: 600; }
details.obviousness-section > summary { display: flex; align-items: center; gap: 10px; margin: 0; }
details.obviousness-section { padding-top: 15px; padding-bottom: 15px; }
/* Folded sections read as one list: shared borders, rounded only at the ends. */
details.obviousness-section + details.obviousness-section { margin-top: -21px; border-top-left-radius: 0; border-top-right-radius: 0; }
details.obviousness-section:has(+ details.obviousness-section) { border-bottom-left-radius: 0; border-bottom-right-radius: 0; }
details.obviousness-section > summary { font-size: 16.5px; font-weight: 600; }
details.obviousness-section[open] > summary { margin-bottom: 12px; }
.obviousness-section.required-inputs { border-color: var(--warn-line); background: var(--warn-soft); }
.obviousness-position { margin-top: 10px; font-size: 15px; }
.obviousness-citations { display: inline-flex; flex-wrap: wrap; gap: 4px; margin-left: 6px; vertical-align: baseline; }
.obviousness-matrix-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.obviousness-dates, .obviousness-matrix { width: 100%; border-collapse: collapse; font-size: 14px; }
.obviousness-dates th, .obviousness-dates td, .obviousness-matrix th, .obviousness-matrix td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.obviousness-matrix tbody tr:last-child > * { border-bottom: 0; }
.obviousness-dates thead th, .obviousness-matrix thead th { background: var(--surface-2); font-size: 11.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.obviousness-matrix td { width: 120px; text-align: center; vertical-align: middle; white-space: nowrap; }
.matrix-element { min-width: 240px; font-weight: 400; }
.matrix-element strong { margin-right: 6px; color: var(--primary); }
.matrix-status, .argument-strength, .case-outcome, .argument-side, .assessment-badge {
  display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; line-height: 1.5; letter-spacing: 0; text-transform: none;
}
.matrix-disclosed, .strength-strong, .outcome-not_obvious, .assessment-nonobvious { background: var(--ok-soft); color: var(--ok); }
.matrix-partial, .strength-moderate, .outcome-vacated_or_remanded, .outcome-mixed, .assessment-arguable { background: var(--warn-soft); color: var(--warn); }
.matrix-absent, .strength-weak, .outcome-obvious, .assessment-obvious { background: var(--bad-soft); color: var(--bad); }
.matrix-unclear, .argument-side { background: #eef1f5; color: var(--ink-2); }
/* Per-element notes: a quiet list under the table, one line each until opened. */
.matrix-detail { padding: 9px 2px; border-bottom: 1px solid var(--line); font-size: 14px; }
.obviousness-matrix-scroll + .matrix-detail { margin-top: 10px; }
.matrix-detail:last-child { border-bottom: 0; padding-bottom: 0; }
.matrix-detail > summary { font-weight: 500; color: var(--ink-2); }
.matrix-detail:not([open]) > summary { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.matrix-claim { margin: 10px 0; padding: 1px 0 1px 12px; border-left: 2px solid var(--claim-line); font-family: var(--font-serif); font-size: 15px; }
.matrix-cell-detail { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line-strong); }
.obviousness-section > h4 + .matrix-cell-detail, details.obviousness-section > summary + .matrix-cell-detail { margin-top: 0; padding-top: 0; border-top: 0; }
.matrix-cell-detail p { margin: 0 0 4px; }
.matrix-gap { font-size: 13px; color: var(--bad); }
.reference-quote {
  margin: 6px 0; padding: 2px 0 2px 12px; border-left: 2px solid var(--accent);
  font-family: var(--font-serif); font-size: 15px; white-space: pre-wrap; overflow-wrap: anywhere;
}
.obviousness-fields { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 10px 16px; margin: 0; font-size: 14.5px; }
.obviousness-fields dt { font-size: 13px; font-weight: 600; color: var(--muted); }
.obviousness-fields dd { margin: 0; }
.obviousness-combination { margin-bottom: 10px; font-size: 15px; }
.argument-cards, .similar-cases { display: grid; gap: 12px; }
.argument-card, .similar-case { padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); font-size: 14.5px; }
.argument-patentee { border-left: 3px solid var(--primary); }
.argument-challenger { border-left: 3px solid #9a5b2a; }
.bridge-not_bridged { border-left: 3px solid #c4473c; }
.argument-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 6px; }
.argument-tag { margin: 0 0 4px; font-size: 12px; color: var(--muted); }
.argument-amendment { margin-top: 10px; padding: 10px 12px; border-radius: 6px; background: var(--primary-soft); }
.similar-lesson { font-weight: 500; }
.obviousness-references { margin: 0; padding-left: 18px; font-size: 14.5px; }
.assessment-badge { margin-left: 2px; }
.assessment-limits { margin-top: 14px; padding: 12px 16px; border: 1px solid var(--warn-line); border-radius: 10px; background: var(--warn-soft); font-size: 14px; }
.assessment-limits ul { margin: 4px 0 0 18px; padding: 0; }

/* Motion */
@media (prefers-reduced-motion: no-preference) {
  textarea, .text-input, .review-type-option, .review-list-entry, .secondary-button, .primary-button, .ghost-button,
  .materials-summary::before, .element-map > summary::before { transition: border-color .15s, background-color .15s, box-shadow .15s, transform .15s; }
}
@media (prefers-reduced-motion: reduce) {
  .analysis-panel:has(#stop-analysis:not([hidden]))::before { width: 100%; opacity: .35; animation: none; }
}

/* Narrow screens */
@media (max-width: 720px) {
  /* Brand and connection pill on the first line, review navigation on the second. */
  .app-header { position: static; flex-wrap: wrap; justify-content: flex-start; gap: 4px 12px; padding: 10px 16px 6px; }
  .header-actions { display: contents; }
  .brand { order: 0; }
  .brand-name { font-size: 15px; }
  .status-menu { order: 1; margin-left: auto; }
  .status-menu > summary { padding: 4px 10px; }
  .status { font-size: 12px; }
  .app-header::after { content: ""; order: 2; flex-basis: 100%; height: 0; }
  .ghost-button { order: 3; padding: 6px 10px; }
  #new-review { margin-left: -10px; }
  .page { padding: 30px 16px 56px; }
  #review-title { font-size: 30px; }
  .page:has(.saved-review) #review-title { font-size: 23px; }
  #review-message { font-size: 15px; }
  .materials-summary { padding: 16px 18px; }
  .materials-body { padding: 0 18px 22px; }
  .review-type { grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); }
  .review-type-option { padding: 8px 6px; font-size: 12.5px; white-space: nowrap; }
  .conversation-heading { padding: 12px 18px 0; }
  /* Answers use the full phone width: the conversation panel runs edge to edge. */
  .saved-review .conversation { margin: 0 -16px; border-right: 0; border-left: 0; border-radius: 0; }
  .saved-review .composer { border-radius: 0; }
  .turn-list { padding: 4px 18px; }
  .composer { padding: 20px 18px 22px; }
  .composer-footer { flex-direction: column-reverse; align-items: stretch; gap: 10px; }
  .send-button { width: 100%; }
  .analysis-panel { margin: 0 16px 16px; }
  .issue-field { grid-template-columns: minmax(0, 1fr); gap: 6px; padding: 16px 18px; }
  .issue-title { padding: 16px 18px 14px; font-size: 18px; }
  .answer-overview { padding: 0 0 2px 16px; }
  .answer-overview .answer-fragment, .answer-overview > p:not([class]) { font-size: 19px; }
  .element-map > summary, .element-map-body, .answer-caveats, .required-inputs { padding-left: 18px; padding-right: 18px; }
  .answer-key-sources li { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .key-source-locations { justify-content: flex-start; max-width: none; }
  .obviousness-section { padding: 16px; }
  .matrix-element { min-width: 170px; }
  .obviousness-matrix th, .obviousness-matrix td { padding: 9px 8px; }
  .obviousness-matrix td { width: auto; }
  .obviousness-fields { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .obviousness-fields dd { margin-bottom: 10px; }
  .reference-meta { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .inline-controls { flex-direction: column; }
  #reviews-dialog { width: calc(100vw - 20px); padding: 18px; }
  .review-list-entry { padding: 12px; }
  #version-dialog { padding: 18px; }
  #citation-dialog { width: 100vw; padding: 0 18px 30px; }
  .citation-header { gap: 10px; }
  #citation-title { font-size: 17px; }
  .source-quote { padding: 2px 0 2px 14px; }
  .notice { align-items: flex-start; }
}

/* Printing a saved answer */
@media print {
  .app-header, .intro, #materials-panel, .composer, .analysis-panel, .conversation-heading, .skip-link, button[data-version-view], .turn-superseded { display: none !important; }
  body, html { background: #fff; }
  .page { max-width: none; padding: 0; }
  .panel { border: 0; box-shadow: none; }
  .turn-list { padding: 0; }
}