/* Shared visual system from the ReMel research companion. */

:root {
  --ink: #20283b; --muted: #59657a; --paper: #f3f5fa; --panel: #fff;
  --accent: #245ea8; --accent-pale: #e8f0fb; --teal: #0c6a67;
  --amber: #a65e1c; --red: #a73e5c; --line: #dce2ec;
}
* { box-sizing: border-box; }
html { color: var(--ink); background: var(--paper); scroll-behavior: smooth; }
body { margin: 0; font: 1rem/1.6 Arial, Helvetica, sans-serif; }
main { max-width: 1280px; margin: auto; padding: 26px 32px 20px; }
button, input, select { font: inherit; }
button, summary { cursor: pointer; }
button { color: var(--ink); border: 1px solid var(--line); background: #fff; border-radius: 6px; min-height: 40px; padding: 8px 14px; transition: background .15s, border-color .15s; }
button:hover:not(:disabled) { background: #edf3fb; border-color: #a6c2e5; }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, a:focus-visible, [tabindex]:focus-visible { outline: 3px solid #5487c7; outline-offset: 3px; }
a { color: var(--accent); text-underline-offset: 4px; }
h1, h2, h3, p { margin: 0; }
.page-header { display:flex; justify-content:space-between; align-items:center; gap:20px; }
.eyebrow { color:var(--muted); font-size:.875rem; letter-spacing:.06em; font-weight:600; }
h1 { font-size:clamp(1.8rem,3vw,2.3rem); letter-spacing:-.03em; line-height:1.4; margin-top:5px; font-weight:650; }
h1 span { color:var(--accent); }
.project-nav { display:flex; justify-content:space-between; align-items:center; gap:20px; border-bottom:1px solid var(--line); padding-bottom:18px; font-size:.875rem; }
.project-nav a { text-decoration:none; }
.project-nav a:hover { text-decoration:underline; }
.wordmark { font-weight:650; color:var(--ink); }
.wordmark span { font-weight:400; color:var(--muted); }
.project-nav > div { display:flex; gap:24px; flex-wrap:wrap; }
.paper-heading { text-align:center; padding:36px 0 28px; }
.paper-heading h1 { max-width:1080px; margin:12px auto 18px; font-size:clamp(1.9rem,3.6vw,2.8rem); line-height:1.18; letter-spacing:-.035em; text-wrap:balance; }
.authors { display:flex; justify-content:center; gap:12px 30px; flex-wrap:wrap; font-size:1.1rem; margin-bottom:16px; }
.authors a { text-decoration:none; }
.authors a:hover { text-decoration:underline; }
sup { font-size:.7em; margin-left:3px; }
.affiliations { color:var(--muted); font-size:.875rem; line-height:1.65; max-width:910px; margin:auto; }
.affiliations p + p { margin-top:7px; }
.contact-note { color:var(--muted); font-size:.875rem; margin-top:12px; }
.paper-actions { display:flex; justify-content:center; flex-wrap:wrap; gap:10px; margin-top:22px; }
.resource-button { border:1px solid var(--line); background:#fff; padding:9px 16px; border-radius:6px; font-size:.875rem; text-decoration:none; font-weight:550; }
.resource-button.primary { background:var(--ink); border-color:var(--ink); color:white; }
.resource-button:hover { border-color:var(--accent); box-shadow:0 2px 8px #20283b12; }
.resource-button span { margin-left:8px; }
.research-summary { display:flex; align-items:baseline; gap:20px; padding:17px 20px; border-left:3px solid var(--accent); background:#e8eff9; font-size:.9375rem; }
.summary-label { color:var(--accent); font-weight:650; white-space:nowrap; }
.research-summary p { flex:1; }
.local-badge { font-size:.875rem; white-space:nowrap; color:var(--muted); }
.abstract { padding:6px 0; margin-top:7px; font-size:.875rem; color:var(--muted); }
.abstract p { max-width:1020px; line-height:1.8; margin:8px 0 12px; font-size:1rem; color:var(--ink); }
.section-heading { display:flex; justify-content:space-between; align-items:end; gap:24px; margin:30px 0 12px; scroll-margin-top:20px; }
.section-heading h2 { font-size:1.45rem; line-height:1.35; margin-top:6px; text-wrap:balance; }
.section-heading > p { color:var(--muted); font-size:.875rem; }
.method-section, .resources-section { scroll-margin-top:24px; margin:36px 0; }
.method-intro { color:var(--muted); max-width:1040px; }
.method-figure { margin:22px 0; padding:16px; background:white; border:1px solid var(--line); border-radius:8px; }
.method-figure img { display:block; width:100%; height:auto; }
.method-figure figcaption { font-size:.875rem; color:var(--muted); margin:12px 4px 0; }
.method-explanation { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:28px; }
.method-explanation h3, .code-comparisons h3, .scope-grid h3 { font-size:1rem; font-weight:650; line-height:1.4; }
.method-explanation p, .code-comparisons p, .scope-grid p { color:var(--muted); font-size:.9375rem; margin-top:8px; }
.step-number { color:var(--accent); font-size:.875rem; font-weight:600; display:block; margin-bottom:5px; }
.method-comparisons { margin:22px 0; border-top:1px solid var(--line); padding-top:8px; }
.method-comparisons > summary { font-size:.9375rem; }
.code-comparisons { display:grid; grid-template-columns:repeat(5,minmax(0,1fr)); gap:20px; margin:16px 0; }
.code-comparisons article { border-left:2px solid var(--line); padding-left:14px; }
.code-comparisons article:last-child { border-color:var(--accent); }
.code-comparisons span { font-size:.875rem; color:var(--accent); display:block; margin-top:6px; }
.scope-grid { display:grid; grid-template-columns:1fr 1fr; gap:36px; padding:20px 24px; background:#eaf0f2; border-radius:8px; }
.scope-grid > div:last-child { border-left:1px solid #cbd4dc; padding-left:28px; }
.resources-section { border-top:1px solid var(--line); padding-top:24px; margin-bottom:0; }
.resources-section h2 { margin-top:6px; }
.resources-section > div > p:not(.eyebrow) { color:var(--muted); font-size:.875rem; margin-top:8px; }
.resource-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; margin:20px 0; }
.resource-grid > a { text-decoration:none; border:1px solid var(--line); background:white; border-radius:7px; padding:15px; }
.resource-grid > a:hover { border-color:var(--accent); background:#f8fbff; }
.resource-grid strong { display:block; font-size:.9375rem; font-weight:600; }
.resource-grid strong > span { float:right; }
.resource-grid a > span { display:block; font-size:.875rem; color:var(--muted); margin-top:6px; }
.contact-row { display:flex; flex-wrap:wrap; gap:8px 24px; color:var(--muted); font-size:.875rem; }
.contact-row a { overflow-wrap:anywhere; }
.quiet-link { font-size:.875rem; text-decoration:none; white-space:nowrap; }
.scope-note { color:var(--muted); font-size:.875rem; margin:10px 0 22px; max-width:1000px; }
.workbench { background:var(--panel); border:1px solid var(--line); border-radius:12px; box-shadow:0 10px 30px #16345d08; padding:20px 24px 16px; }
.bench-header { display:flex; align-items:center; justify-content:space-between; gap:18px; padding-bottom:18px; }
.collection-header { display:flex; align-items:center; flex-wrap:wrap; gap:12px 24px; border-bottom:1px solid var(--line); margin-bottom:18px; padding-bottom:16px; }
.collection-header p { color:var(--muted); font-size:.875rem; flex:1; min-width:220px; }
.sample-provenance { margin:0 0 18px; }
.selection-downloads { display:flex; flex-wrap:wrap; gap:8px 22px; }
.mode-switch { display:flex; gap:4px; padding:4px; background:#eff1f6; border-radius:8px; }
.mode-switch button { background:transparent; border-color:transparent; font-size:.875rem; }
.mode-switch button[aria-pressed="true"] { background:var(--ink); color:white; }
.sample-picker { display:flex; align-items:center; gap:10px; font-size:.875rem; color:var(--muted); }
select { border:1px solid var(--line); border-radius:6px; padding:8px 28px 8px 10px; background:#fff; color:var(--ink); max-width:100%; }
.variant-tabs { display:grid; grid-template-columns:repeat(5,minmax(0,1fr)); gap:7px; border-bottom:1px solid var(--line); padding-bottom:18px; }
.variant-tabs button { text-align:left; padding:10px 12px; background:#fafbfd; min-width:0; }
.variant-tabs button[aria-pressed="true"] { border-color:var(--accent); background:var(--accent-pale); box-shadow:inset 0 2px var(--accent); }
.variant-tabs strong { display:block; font-size:.9375rem; line-height:1.5; overflow-wrap:anywhere; }
.variant-tabs span { display:block; color:var(--muted); font-size:.875rem; margin-top:2px; }
.score-heading { display:flex; align-items:center; justify-content:space-between; gap:18px; padding:17px 0 7px; }
.data-tag { font-size:.875rem; color:var(--teal); font-weight:600; }
.data-tag.model { color:var(--accent); }
h2 { font-size:1.2rem; line-height:1.5; font-weight:650; }
.legend { display:flex; flex-wrap:wrap; gap:16px; font-size:.875rem; }
.legend span { display:flex; align-items:center; gap:6px; }
.legend i { font-style:normal; font-weight:700; font-size:1.05rem; }
.keep { color:#637185; } .change { color:var(--accent); } .delete { color:var(--red); } .insert { color:var(--amber); }
.score-scroll { overflow-x:auto; margin:8px -4px 0; }
.paired-roll { width:100%; min-width:600px; max-height:380px; display:block; }
.transport { display:flex; flex-wrap:wrap; align-items:center; gap:8px; border-top:1px solid var(--line); padding:14px 0; margin-top:12px; }
.transport button { font-size:.875rem; }
.transport .primary { background:var(--accent); color:white; border-color:var(--accent); }
.transport .primary:hover { background:#18487f; }
.transport button[aria-pressed="true"] { box-shadow:0 0 0 2px #a6c2e5; }
.clock { margin-left:auto; color:var(--muted); font-size:.875rem; font-variant-numeric:tabular-nums; min-width:185px; text-align:right; }
.observation { display:flex; gap:18px; align-items:baseline; padding:12px 15px; border-left:3px solid var(--accent); background:#f0f5fc; font-size:.875rem; }
.observation b { white-space:nowrap; color:var(--accent); }
.observation p { color:var(--muted); }
.observation.failure, .observation.drift { border-color:var(--red); background:#fcf1f4; }
.observation.failure b, .observation.drift b { color:var(--red); }
.observation.data { border-color:var(--teal); background:#edf7f4; }
.observation.data b { color:var(--teal); }
.bench-footnote { display:flex; flex-wrap:wrap; justify-content:space-between; gap:6px 20px; padding-top:14px; color:var(--muted); font-size:.875rem; }
.attribution { font-size:.875rem; color:var(--muted); margin-top:5px; }
.replay-panel { border-top:1px solid var(--line); padding-top:14px; }
.replay-title { display:flex; align-items:center; justify-content:space-between; gap:12px; font-size:.875rem; }
.replay-title span { color:var(--red); }
.replay-title strong { margin-left:8px; font-variant-numeric:tabular-nums; }
.replay-panel input { width:100%; accent-color:var(--accent); margin:16px 0; height:24px; }
.step-controls { display:flex; flex-wrap:wrap; gap:8px; }
.step-controls button { font-size:.875rem; }
.current-edit { display:flex; align-items:baseline; gap:15px; padding:15px 0; font-size:.875rem; }
.current-edit b { color:var(--accent); white-space:nowrap; }
.current-edit span { overflow-wrap:anywhere; }
.edit-strip { display:flex; overflow-x:auto; gap:6px; padding:4px 2px 12px; }
.edit-strip button { min-width:42px; flex-shrink:0; padding:4px 8px; }
.edit-strip button[aria-pressed="true"] { border:2px solid currentColor; background:var(--accent-pale); padding:3px 7px; }
.edit-strip span, .edit-strip small { display:block; }
.edit-strip span { font-size:1.125rem; line-height:1.3; }
.edit-strip small { font-size:.75rem; color:var(--muted); }
.case-navigation { margin:28px 0; }
.case-navigation p { font-size:.875rem; color:var(--muted); margin-top:4px; }
.case-buttons { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:12px; margin-top:14px; }
.case-buttons button { padding:14px 16px; text-align:left; border-top:3px solid var(--accent); }
.case-buttons button:nth-child(n+3) { border-top-color:var(--red); }
.case-buttons strong, .case-buttons span { display:block; }
.case-buttons strong { font-size:1rem; }
.case-buttons span { font-size:.875rem; color:var(--muted); margin-top:3px; }
.selection-rules { margin-top:12px; font-size:.875rem; color:var(--muted); }
.selection-rules p { max-width:1000px; padding:8px 0; }
summary { padding:8px 0; }
.evidence-disclosure { border:1px solid var(--line); border-radius:8px; background:#fff; padding:8px 20px; scroll-margin-top:20px; }
.evidence-disclosure > summary { padding:10px 0; }
.evidence-disclosure > summary span { font-weight:650; }
.evidence-disclosure > summary small { margin-left:18px; color:var(--muted); font-size:.875rem; }
.evidence-content { padding:12px 0; }
.evidence-content > p { margin:10px 0; }
.evidence-content details { border-top:1px solid var(--line); padding:10px 0; }
.evidence-content details p { margin:12px 0; }
.evidence-content details ul { margin:12px 0; padding-left:24px; }
.findings { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:20px; margin:24px 0; }
.findings article { border-left:2px solid var(--accent); padding-left:16px; }
.findings strong { display:block; font-size:1.5rem; color:var(--accent); line-height:1.4; }
.findings span { display:block; color:var(--muted); font-size:.875rem; padding-top:5px; }
.fine-print { color:var(--muted); font-size:.875rem; }
.table-scroll { overflow-x:auto; }
table { border-collapse:collapse; width:100%; font-size:.875rem; }
th, td { text-align:left; border-bottom:1px solid var(--line); padding:10px 12px; }
th { font-weight:600; }
caption { text-align:left; color:var(--muted); padding:10px 0; }
.song-grid { display:grid; grid-template-columns:repeat(16,minmax(0,1fr)); gap:5px; margin:18px 0; }
.song-grid span { padding:6px 0; text-align:center; font-size:.75rem; }
.song-grid .win { background:var(--accent); color:#fff; border:1px solid var(--accent); }
.song-grid .loss { border:2px dashed var(--amber); color:var(--amber); }
.downloads { display:flex; flex-wrap:wrap; gap:10px 24px; margin-top:18px; font-size:.875rem; }
.error { color:var(--red); background:#fcf1f4; border-radius:4px; padding:12px; margin:10px 0; }
.loading { min-height:270px; display:grid; place-content:center; gap:20px; color:var(--muted); }
footer { display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; font-size:.875rem; color:var(--muted); padding:26px 0 4px; }
@media (max-width:800px) {
  main { padding:18px 16px; }
  .workbench { padding:14px; }
  .bench-header, .score-heading { align-items:flex-start; flex-direction:column; }
  .variant-tabs { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .variant-tabs button:last-child { grid-column:span 2; }
  .score-heading { gap:8px; }
  .clock { width:100%; margin:5px 0 0; text-align:left; }
  .case-buttons { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .findings { grid-template-columns:1fr; }
  .song-grid { grid-template-columns:repeat(8,minmax(0,1fr)); }
  .observation, .current-edit { flex-direction:column; gap:3px; }
  .page-header { align-items:flex-start; }
  .quiet-link { max-width:90px; white-space:normal; text-align:right; }
  .evidence-disclosure > summary small { display:block; margin-left:18px; }
  .replay-title { align-items:flex-start; flex-direction:column; gap:2px; }
  .project-nav { flex-wrap:wrap; gap:12px; }
  .project-nav > div { gap:20px; }
  .paper-heading { padding:28px 0 24px; }
  .desktop-break { display:none; }
  .authors { gap:8px 20px; }
  .research-summary { flex-wrap:wrap; gap:6px 14px; }
  .research-summary p { flex-basis:100%; }
  .section-heading { align-items:flex-start; flex-direction:column; gap:8px; }
  .method-explanation { grid-template-columns:1fr; gap:20px; }
  .code-comparisons, .resource-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .scope-grid { grid-template-columns:1fr; gap:20px; padding:18px; }
  .scope-grid > div:last-child { border-left:0; border-top:1px solid #cbd4dc; padding:18px 0 0; }
  .method-figure { padding:8px; }
}
@media (max-width:440px) {
  .wordmark span { display:none; }
  .mode-switch { width:100%; }
  .mode-switch button { flex:1; padding:8px; }
  .resource-grid, .code-comparisons { grid-template-columns:1fr; }
  .authors { flex-direction:column; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; } button { transition:none; }
}

/* BeatEdit media and task controls; shared template colors and spacing above. */
.reference-cards,.method-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.method-cards{grid-template-columns:minmax(0,1fr)}
.method-card .result-heading{min-height:0}
.method-card{display:grid;grid-template-columns:300px minmax(0,1fr);column-gap:22px;row-gap:5px;align-items:start}
.method-card .result-heading{grid-column:1;grid-row:1}
.method-card .roll-link{grid-column:2;grid-row:1 / span 4;align-self:center}
.method-card audio{grid-column:1;grid-row:2;margin:0}
.method-card .pair-button{grid-column:1;grid-row:3}
.method-card .card-tools{grid-column:1;grid-row:4;margin:0}
.method-card .result-heading p{margin-bottom:3px}
.method-card .midi-container{max-width:100%;overflow:auto}
@media(min-width:760px){.resources-section .resource-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){.method-card{grid-template-columns:180px minmax(0,1fr);column-gap:14px}}
@media(max-width:560px){.method-card{display:block}.method-card audio{margin:10px 0 7px}.method-card .card-tools{margin-top:5px}}
.reference-cards{grid-template-columns:repeat(2,minmax(0,1fr));padding-bottom:24px;border-bottom:1px solid var(--line)}
.reference-cards.three-references{grid-template-columns:repeat(3,minmax(0,1fr))}
.result-card{min-width:0;border:1px solid var(--line);border-radius:8px;padding:14px;background:#fff}
.method-card{border-top:3px solid var(--accent);background:#f8fbff}
.baseline-card{border-top-color:#78899e;background:#fafbfd}
.reference-card{background:#f7f9fc}
.result-heading{min-height:86px}
.result-type{font-size:.7rem;letter-spacing:.05em;font-weight:650;color:var(--accent)}
.reference-card .result-type,.baseline-card .result-type{color:var(--muted)}
.result-heading h3{font-size:1.05rem;line-height:1.35;margin:4px 0}
.result-heading p{color:var(--muted);font-size:.8rem;margin-bottom:12px}
.result-card .roll-link img{width:100%;min-width:0;height:auto;max-height:none}
.method-card .roll-link img{height:260px;object-fit:contain}
@media(max-width:560px){.method-card .roll-link img{height:auto}}
.reference-card .roll-link img{max-height:180px}
.result-card audio{width:100%;height:36px;display:block;margin:12px 0 8px}
.pair-button{width:100%;color:var(--accent);border-color:#bbd0eb;background:#edf3fb;font-size:.8rem;min-height:36px}
.card-tools{font-size:.75rem;color:var(--muted);margin-top:7px}
.card-tools summary{padding:5px 0}
.card-tools .panel-tools{font-size:.75rem;gap:6px 12px}
.card-section-title{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:22px 0 14px}
.card-section-title h3{font-size:1.05rem}
.card-section-title p{font-size:.8rem;color:var(--muted)}
.baseline-disclosure{border-top:1px solid var(--line);margin-top:22px;padding-top:10px;font-size:.875rem}
.baseline-disclosure>.method-cards{margin-top:12px}
@media(max-width:950px){.method-cards{gap:10px}.result-card{padding:10px}.result-heading h3{font-size:.95rem}.card-section-title{display:block}.card-section-title p{margin-top:5px}}
@media(max-width:680px){.reference-cards,.reference-cards.three-references,.method-cards{grid-template-columns:1fr}.result-heading{min-height:0}.result-card{padding:14px}.result-card .roll-link{overflow:hidden}.reference-card .roll-link img{max-height:none}.result-heading h3{font-size:1.05rem}}
.sr-only,.skip-link:not(:focus){position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.skip-link:focus{display:block;padding:12px;background:white}
.task-tabs button[aria-selected="true"]{background:var(--ink);color:#fff}
.task-tabs button{white-space:nowrap}
.collection-header{justify-content:space-between}
.sample-picker button{padding:6px 10px;min-height:38px}
.sample-picker{gap:8px}
.bench-header h3{font-size:1rem;font-weight:650}
.bench-header p{font-size:.875rem;color:var(--muted);margin-top:5px}
.variant-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}
.variant-tabs button:last-child{grid-column:auto}
.comparison-selectors{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px 24px;padding-top:18px}
.comparison-selectors select{font-size:.875rem}
.plot-note{font-size:.875rem;color:var(--muted)}
.comparison-grid{display:grid;gap:12px}
.comparison-grid>div{min-width:0}
.roll-caption{font-size:.875rem;font-weight:600;color:var(--muted);padding:5px 8px}
.roll-link{display:block;background:#fafbfd;border:1px solid var(--line);border-radius:7px;overflow:hidden;text-align:center}
.roll-link img{display:block;width:100%;height:auto;max-height:270px;object-fit:contain;background:white}
.panel-player{display:flex;align-items:center;gap:20px;margin:9px 0 3px}
.panel-player audio{width:270px;max-width:100%;height:32px}
.panel-tools{display:flex;gap:18px;align-items:center;flex-wrap:wrap;font-size:.8rem}
.panel-tools button{border:0;padding:3px 0;min-height:28px;color:var(--accent);background:transparent;font-size:inherit}
.panel-tools a{text-decoration:none}
.panel-tools a:hover{text-decoration:underline}
.midi-container{font-size:.875rem;margin-top:10px}
.midi-container:empty{display:none}
midi-player{display:block;--primary-color:#245ea8}
midi-visualizer{display:block;max-height:240px;overflow:auto}
.method-explanation .mechanism{display:inline-block;margin-top:10px;font-size:.875rem;text-decoration:none}
.citation-section{font-size:.875rem;padding-bottom:12px}
.citation-section button{float:right;font-size:.8rem;margin:8px}
.citation-section pre{clear:both;overflow:auto;white-space:pre;background:#edeff5;padding:18px;border-radius:7px;font-size:.8rem}
@media(max-width:850px){.collection-header{align-items:flex-start}.panel-player{flex-wrap:wrap;gap:5px}.mode-switch.task-tabs{flex-wrap:wrap}.comparison-selectors{align-items:flex-start}.roll-link img{max-height:none}}
@media(max-width:680px){.variant-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}.variant-tabs strong{font-size:.85rem}.variant-tabs span{font-size:.75rem}.comparison-selectors .sample-picker{width:100%;justify-content:space-between}.comparison-selectors select{max-width:65%}.score-heading{gap:4px}.plot-note{font-size:.75rem}.panel-player audio{width:100%}.panel-tools{font-size:.75rem;gap:12px}.task-tabs button{white-space:normal;flex:1;font-size:.8rem;padding:7px 9px}.task-tabs{width:100%}.sample-picker{margin-left:auto}.roll-link img{min-width:560px}.roll-link{overflow-x:auto}.paper-heading h1{font-size:1.9rem}.authors{font-size:1rem}.method-explanation{grid-template-columns:1fr}}