@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root { --ink:#152126; --muted:#68767b; --line:#d9e1df; --paper:#f5f7f3; --panel:#fff; --teal:#0e6b68; --teal-dark:#084d4c; --amber:#c98724; --coral:#b95542; }
* { box-sizing:border-box; }
body { margin:0; color:var(--ink); background:var(--paper); font:14px/1.5 'DM Sans',sans-serif; }
button,input,textarea { font:inherit; }
button { cursor:pointer; }
button:disabled { cursor:not-allowed; opacity:.52; }
.visually-hidden { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); }
.muted { color:var(--muted); }

.site-header { background:#5c2d91; border-bottom:2px solid #3f1f66; min-height:52px; padding:6px 1.25rem; display:flex; align-items:center; }
.site-header__inner { width:100%; display:flex; align-items:center; justify-content:space-between; gap:1rem; flex-wrap:wrap; }
.brand-lockup { display:flex; align-items:center; gap:.65rem; text-decoration:none; color:#fff; }
.brand-lockup img { width:110px; height:auto; display:block; }
.brand-lockup__product { font-size:.85rem; font-weight:600; letter-spacing:.02em; border-left:1px solid rgba(255,255,255,.4); padding-left:.65rem; }
.status-pill { color:#eadcf5; font-size:13px; }
.button-light { background:#fff; color:#5c2d91; }
.button-light:hover { background:#f0e7f3; }
.header-actions { display:flex; align-items:center; gap:12px; }
.button { border:0; border-radius:5px; padding:9px 14px; font-weight:700; }
.button-small { padding:5px 10px; font-size:12px; }
.button-primary { background:#f4c96a; color:#213332; }
.button-primary:hover { background:#ffe09a; }
.button-secondary { background:#e3f0ec; color:var(--teal-dark); }
.button-ghost { background:transparent; color:#fff; border:1px solid rgba(255,255,255,.4); }
.link-button { border:0; background:none; color:var(--teal); font-weight:700; padding:0; text-decoration:underline; }

.studio-shell { padding:18px 2vw 40px; }
.authoring-grid { display:grid; grid-template-columns:minmax(280px,.75fr) minmax(380px,1.15fr) minmax(420px,1.3fr); gap:14px; align-items:start; }
.panel { background:var(--panel); border:1px solid var(--line); border-radius:7px; padding:18px; box-shadow:0 10px 30px rgba(21,33,38,.04); min-width:0; }
.panel-heading { display:flex; align-items:flex-start; gap:12px; margin-bottom:14px; }
.panel-heading h2 { margin:0; font:600 20px 'Space Grotesk',sans-serif; }
.panel-heading p { margin:3px 0 0; color:var(--muted); font-size:13px; }
.step { color:var(--amber); font:700 12px 'Space Grotesk',sans-serif; padding-top:4px; }
label { display:block; color:#3d4c50; font-size:12px; font-weight:700; text-transform:uppercase; letter-spacing:.06em; }
input,textarea { width:100%; border:1px solid var(--line); border-radius:4px; padding:9px 10px; margin-top:6px; color:var(--ink); background:#fbfcfa; }
textarea { resize:vertical; }
input[type=file] { padding:7px; font-size:12px; }
.hint { color:var(--muted); font-size:12px; }
.sample-status { display:block; margin-top:6px; color:var(--muted); font-size:12px; text-transform:none; letter-spacing:0; font-weight:500; }
.message { padding:11px 14px; border-radius:5px; margin-bottom:14px; }
.message-success { color:var(--teal-dark); background:#e1f1eb; }
.message-error { color:#7b3025; background:#fae5df; }

/* Conversation */
.chat-panel { display:flex; flex-direction:column; position:sticky; top:12px; max-height:calc(100vh - 24px); }
.chat-log { flex:1; min-height:220px; overflow:auto; margin:14px 0 10px; display:flex; flex-direction:column; gap:9px; padding-right:3px; }
.chat-empty { color:var(--muted); font-size:13px; background:#f3f6f3; border-radius:6px; padding:12px; }
.chat-bubble { padding:9px 11px; border-radius:8px; font-size:13px; max-width:94%; overflow-wrap:anywhere; }
.chat-user { align-self:flex-end; background:var(--teal); color:#fff; border-bottom-right-radius:2px; }
.chat-assistant { align-self:flex-start; background:#eef3f0; border-bottom-left-radius:2px; }
.chat-error { align-self:flex-start; background:#fae5df; color:#7b3025; }
.chat-system { align-self:center; font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; }
.dots { display:inline-flex; gap:3px; margin-right:6px; }
.dots i { width:5px; height:5px; border-radius:50%; background:var(--teal); animation:blink 1.2s infinite ease-in-out; }
.dots i:nth-child(2) { animation-delay:.2s; } .dots i:nth-child(3) { animation-delay:.4s; }
@keyframes blink { 0%,80%,100% { opacity:.2; } 40% { opacity:1; } }
.proposal-card { margin-top:9px; padding:10px; background:#fff; border:1px solid var(--line); border-radius:6px; }
.proposal-title { font-weight:700; font-size:12px; text-transform:uppercase; letter-spacing:.05em; color:var(--teal-dark); }
.change-list,.diff-list,.warning-list,.issue-list { margin:6px 0 0; padding-left:18px; font-size:12px; }
.change-list li { margin:3px 0; }
.change-add_field::marker { content:'+ '; color:#15803d; font-weight:700; }
.change-remove_field::marker { content:'− '; color:var(--coral); font-weight:700; }
.change-update_field::marker { content:'~ '; color:var(--amber); font-weight:700; }
.diff-list { list-style:none; padding:6px 0 0; border-top:1px dashed var(--line); margin-top:8px; }
.delta { color:var(--teal-dark); font-weight:700; }
.warning-list { color:#76500f; }
.proposal-actions { display:flex; gap:8px; margin-top:10px; }
.composer-actions { display:flex; justify-content:space-between; align-items:center; margin-top:8px; }
.history { margin-top:12px; font-size:12px; }
.history summary { cursor:pointer; color:var(--muted); font-weight:700; }
.revision-list { list-style:none; padding:0; margin:6px 0 0; max-height:160px; overflow:auto; }
.revision-list li { display:flex; justify-content:space-between; gap:8px; padding:4px 0; border-bottom:1px solid #eef2ef; }
.revision-list em { color:var(--muted); }

/* Document */
.legend { display:flex; flex-wrap:wrap; gap:6px; margin-bottom:10px; }
.legend-chip { display:inline-flex; align-items:center; gap:6px; border:1px solid var(--line); background:#fff; border-radius:12px; padding:3px 10px; font-size:12px; }
.legend-chip i { width:10px; height:10px; border-radius:2px; background:var(--field-color); }
.legend-off { opacity:.45; text-decoration:line-through; }
.document-viewer { display:grid; gap:18px; max-height:calc(100vh - 170px); overflow:auto; padding:2px 5px 8px 2px; background:#edf1ee; border-radius:5px; }
.empty-viewer { min-height:420px; display:grid; place-items:center; color:var(--muted); }
.document-page { margin:0; }
.page-canvas { position:relative; width:100%; background:#fff; box-shadow:0 3px 12px rgba(21,33,38,.13); }
.page-canvas img { display:block; width:100%; height:auto; }
.document-page figcaption { padding:6px 4px 0; color:var(--muted); font-size:12px; display:flex; gap:8px; align-items:center; }
.page-badge { font-size:11px; padding:1px 7px; border-radius:9px; background:#dcefe7; color:#176454; }
.page-empty { background:#eef1ee; color:var(--muted); }
.evidence-box { position:absolute; padding:0; border:1.5px solid var(--field-color); border-radius:2px; background:color-mix(in srgb, var(--field-color) 12%, transparent); }
.evidence-box.kind-paragraph { border-style:dashed; background:color-mix(in srgb, var(--field-color) 6%, transparent); }
.evidence-box:hover,.evidence-box:focus-visible { background:color-mix(in srgb, var(--field-color) 30%, transparent); z-index:2; }
.evidence-box.selected { background:color-mix(in srgb, var(--field-color) 38%, transparent); border-width:2.5px; z-index:3; box-shadow:0 0 0 3px color-mix(in srgb, var(--field-color) 25%, transparent); }

/* Results */
[hidden] { display:none !important; }
.composer label { margin-bottom:2px; }
.unsourced-note { margin:4px 0 8px; padding:8px 10px; border-radius:4px; background:#fff0c9; color:#5b3d07; font-size:12px; }
.record-table th.th-unsourced { color:#8a5a0b; background:#fff4d6; }
.proposal-banner { display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:8px; margin-bottom:12px; padding:9px 11px; border-radius:5px; background:#fff0c9; color:#5b3d07; font-size:13px; }
.banner-actions { display:flex; gap:8px; align-items:center; }
.result-fields { display:grid; gap:14px; max-height:calc(100vh - 190px); overflow:auto; padding-right:3px; }
.result-field { border:1px solid var(--line); border-top:3px solid var(--field-color); border-radius:5px; padding:10px 12px; min-width:0; }
.result-field-heading { display:flex; align-items:center; gap:8px; }
.result-field-heading strong { font-size:15px; }
.swatch { width:10px; height:10px; border-radius:2px; background:var(--field-color); flex:none; }
.field-meta { color:var(--muted); font-size:12px; flex:1; }
.field-description { margin:4px 0 8px; color:var(--muted); font-size:12px; }
.table-wrap { overflow:auto; max-height:460px; border:1px solid #eef2ef; border-radius:4px; }
.record-table { border-collapse:collapse; width:100%; font-size:12px; }
.record-table th { position:sticky; top:0; background:#f3f6f3; text-align:left; padding:6px 8px; font-weight:700; white-space:nowrap; z-index:1; }
.record-table td { padding:6px 8px; border-top:1px solid #eef2ef; vertical-align:top; max-width:340px; white-space:pre-wrap; overflow-wrap:anywhere; }
.record-table tr { cursor:pointer; }
.record-table tbody tr:hover { background:#f7faf8; }
.record-table tr.selected { background:color-mix(in srgb, var(--field-color) 14%, #fff); }
.source-cell { white-space:nowrap !important; }
.source-cell small { display:block; color:var(--muted); margin-top:3px; }
.value-list { margin:0; }
.value-row { display:grid; grid-template-columns:minmax(110px,.8fr) 1.6fr auto; gap:8px; padding:6px 4px; border-top:1px solid #eef2ef; cursor:pointer; align-items:start; }
.value-row.selected { background:color-mix(in srgb, var(--field-color) 14%, #fff); }
.value-row dt { color:var(--muted); font-size:12px; }
.value-row dd { margin:0; overflow-wrap:anywhere; }
.value-row dd small { display:block; color:#76500f; }
.resolution { border-radius:10px; padding:1px 7px; font-size:10px; text-transform:uppercase; letter-spacing:.04em; white-space:nowrap; }
.resolution-supported { color:#176454; background:#dcefe7; }
.resolution-ambiguous,.resolution-review { color:#76500f; background:#fff0c9; }
.resolution-not_found { color:#7b3025; background:#fae5df; }
.issue-list { color:#76500f; }
.coverage-box { padding:10px 12px; background:#fff8e3; border-radius:5px; font-size:12px; }
.coverage-box ul { margin:5px 0 0; padding-left:18px; }
.empty-result { color:var(--muted); padding:14px 0; }

@media (max-width:1250px) {
  .authoring-grid { grid-template-columns:minmax(280px,.8fr) minmax(380px,1.3fr); }
  .results-panel { grid-column:1 / -1; }
  .chat-panel { position:static; max-height:none; }
}
@media (max-width:720px) {
  .site-header { padding:10px 16px; }
  .header-actions { flex-wrap:wrap; }
  .studio-shell { padding:12px 16px 30px; }
  .authoring-grid { display:block; }
  .panel { margin-bottom:12px; }
  .document-viewer,.result-fields { max-height:none; }
}