:root {
  --paper: #f3efe7;
  --surface: #fbf8f1;
  --ink: #1d1b18;
  --muted: #777066;
  --line: #d8d0c3;
  --red: #a43a2c;
  --red-dark: #7d281f;
  --translation-bg: #e5ecee;
  --translation-ink: #253a42;
  --translation-line: #708d97;
  --serif: Iowan Old Style, Palatino Linotype, Book Antiqua, Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow: 0 20px 55px rgba(45, 34, 24, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--paper); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
a { color: inherit; }
[hidden] { display: none !important; }

.skip-link { position: fixed; z-index: 100; top: 0.7rem; left: 0.7rem; padding: 0.7rem 1rem; color: white; background: var(--red); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

.site-header { display: grid; grid-template-columns: 1fr auto; height: 64px; padding: 0 18px; align-items: center; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--paper) 94%, transparent); }
.brand { justify-self: start; padding: 0; border: 0; background: transparent; font: 750 .68rem var(--sans); letter-spacing: .14em; text-transform: uppercase; cursor: pointer; }
.header-context { display: none; margin: 0; color: var(--muted); font: italic 0.86rem var(--serif); }
.icon-button { display: grid; width: 38px; height: 38px; padding: 0; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: transparent; cursor: pointer; }
.icon-button:hover { color: white; border-color: var(--red); background: var(--red); }
.icon-button svg { width: 17px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }

.view { display: none; }
.view.is-active { display: block; }
.eyebrow { color: var(--red); font-size: 0.66rem; font-weight: 750; letter-spacing: 0.16em; text-transform: uppercase; }

/* Choose */
.library-shell { width: min(100% - 36px, 860px); margin: 0 auto; padding: 64px 0 42px; }
.library-shell h1 { max-width: 700px; margin: 16px 0 22px; font: 400 clamp(3.05rem, 12vw, 6rem)/0.9 var(--serif); letter-spacing: -0.055em; }
.library-shell h1 em { color: var(--red); font-weight: 400; }
.library-lead { max-width: 500px; margin: 0; color: var(--muted); font: 1rem/1.6 var(--serif); }
.libretto-list { margin-top: 44px; }
.libretto-card { display: grid; width: 100%; padding: 0; overflow: hidden; grid-template-columns: 118px 1fr 42px; align-items: center; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); text-align: left; cursor: pointer; transition: transform 170ms ease, box-shadow 170ms ease; }
.libretto-card:hover { transform: translateY(-3px); box-shadow: 0 25px 65px rgba(45,34,24,0.17); }
.mini-cover { position: relative; display: flex; height: 165px; padding: 18px 12px; overflow: hidden; align-items: center; justify-content: center; flex-direction: column; color: #f1e8d9; background: radial-gradient(circle at 80% 20%, #75281e 0, #181613 47%); }
.mini-cover::after { position: absolute; inset: 9px; border: 1px solid rgba(241,232,217,.2); content: ""; }
.mini-cover strong { z-index: 1; font: italic 2.25rem var(--serif); }
.mini-cover small { z-index: 1; font-size: 0.48rem; letter-spacing: 0.14em; text-align: center; text-transform: uppercase; }
.mini-cover small:first-child { margin-bottom: auto; }
.mini-cover small:last-child { margin-top: auto; }
.libretto-card-copy { display: flex; min-width: 0; padding: 17px 16px; flex-direction: column; }
.libretto-card-copy > small:first-child { color: var(--red); font-size: 0.56rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.libretto-card-copy > strong { margin: 8px 0 1px; font: 2.15rem var(--serif); }
.libretto-card-copy > span:not(.card-progress) { color: var(--muted); font: italic 0.8rem var(--serif); }
.card-progress { height: 2px; margin: 20px 0 8px; background: var(--line); }
.card-progress i { display: block; width: 0; height: 100%; background: var(--red); transition: width 200ms ease; }
.libretto-card-copy > small:last-child { color: var(--muted); font-size: 0.56rem; text-transform: uppercase; }
.round-arrow { display: grid; width: 32px; height: 32px; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--red); }
.small-library-note { display: flex; margin-top: 24px; justify-content: space-between; color: var(--muted); font: italic 0.72rem var(--serif); }

/* Opera introduction */
.opera-shell { width: min(100% - 36px, 1040px); margin: 0 auto; padding: 26px 0 80px; }
.back-link, .reader-back { display: inline-flex; padding: 0; align-items: center; gap: 0.4rem; border: 0; color: var(--muted); background: none; font-size: 0.7rem; cursor: pointer; }
.back-link svg, .reader-back svg { width: 16px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.opera-hero { display: grid; gap: 40px; margin-top: 28px; }
.opera-cover { position: relative; display: flex; width: min(100%, 430px); aspect-ratio: 16 / 9; margin: 0 auto; overflow: hidden; align-items: center; justify-content: center; flex-direction: column; color: #f1e8d9; background: radial-gradient(circle at 75% 20%, #7e2e22 0, #171512 45%); box-shadow: var(--shadow); isolation: isolate; }
.opera-cover::before { position: absolute; inset: 7%; z-index: -1; border: 1px solid rgba(241,232,217,.23); content: ""; }
.opera-cover::after { position: absolute; z-index: -1; width: 74%; height: 74%; border: 1px solid rgba(241,232,217,.13); border-radius: 50%; content: ""; transform: rotate(42deg) scaleY(.35); }
.opera-cover > span { position: absolute; top: 11%; font-size: 0.57rem; letter-spacing: .2em; text-transform: uppercase; }
.opera-cover > strong { font: italic clamp(3.4rem, 15vw, 6.2rem) var(--serif); letter-spacing: -.05em; }
.opera-cover > small { margin-top: .6rem; font-size: .56rem; letter-spacing: .2em; text-transform: uppercase; }
.opera-cover > i { position: absolute; right: 11%; bottom: 9%; color: rgba(241,232,217,.34); font: 2.5rem var(--serif); }
.opera-copy h1 { margin: 12px 0 8px; font: 400 clamp(3.8rem, 16vw, 7rem)/.88 var(--serif); letter-spacing: -.06em; }
.opera-byline { margin: 0; color: var(--muted); font: italic .94rem/1.55 var(--serif); }
.opera-description { max-width: 560px; margin: 26px 0; color: var(--muted); font: 1.08rem/1.68 var(--serif); }
.opera-facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.opera-facts div { min-width: 0; padding: 14px 8px 14px 0; }
.opera-facts div + div { padding-left: 10px; border-left: 1px solid var(--line); }
.opera-facts span, .opera-facts strong { display: block; }
.opera-facts span { margin-bottom: 5px; color: var(--muted); font-size: .52rem; letter-spacing: .08em; text-transform: uppercase; }
.opera-facts strong { font: 400 .8rem/1.3 var(--serif); }
.opera-actions { display: flex; margin-top: 30px; align-items: center; gap: 20px; }
.primary-button { display: inline-flex; min-height: 48px; padding: 0 1.3rem; align-items: center; justify-content: center; gap: 1.5rem; border: 1px solid var(--red); color: white; background: var(--red); font-size: .7rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; cursor: pointer; }
.primary-button:hover { border-color: var(--red-dark); background: var(--red-dark); }
.primary-button svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.text-button { padding: 0; border: 0; border-bottom: 1px solid currentColor; color: var(--muted); background: transparent; font-size: .72rem; cursor: pointer; }
.text-button:hover { color: var(--red); }
.act-overview { margin-top: 76px; }
.act-overview h2 { margin: 9px 0 24px; font: 400 2.5rem/1 var(--serif); letter-spacing: -.04em; }
.act-list { border-top: 1px solid var(--line); }
.act-row { display: grid; width: 100%; padding: 22px 0; grid-template-columns: 50px 1fr 26px; gap: 10px; align-items: start; border: 0; border-bottom: 1px solid var(--line); background: none; text-align: left; cursor: pointer; }
.act-row:hover h3 { color: var(--red); }
.act-row-number { color: var(--red); font: italic .9rem var(--serif); }
.act-row h3 { margin: 0 0 6px; font: 400 1.35rem var(--serif); }
.act-row p { margin: 0; color: var(--muted); font: .86rem/1.45 var(--serif); }
.act-row p small { display: block; margin-top: 5px; color: var(--red); font: .54rem var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.act-row-arrow { color: var(--red); }
.act-row h3 { grid-column: 2; grid-row: 1; }
.act-row p { grid-column: 2; grid-row: 2; }
.act-row-arrow { grid-column: 3; grid-row: 1; }

/* Reader */
.reader-view { min-height: calc(100vh - 64px); background: var(--surface); }
.reader-topbar { display: grid; grid-template-columns: auto 1fr; min-height: 64px; padding: 10px 18px; align-items: center; gap: 14px; border-bottom: 1px solid var(--line); background: var(--surface); }
.reader-back { color: var(--ink); font-size: .75rem; }
.passage-picker-label { display: flex; min-width: 0; flex-direction: column; }
.passage-picker-label > span { margin-bottom: 2px; color: var(--muted); font-size: .48rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.passage-picker-label select { width: 100%; padding: 0 25px 0 0; overflow: hidden; border: 0; outline: 0; color: var(--ink); background: transparent; font: 400 .84rem var(--serif); text-overflow: ellipsis; }
.reader-progress { display: none; color: var(--muted); font-size: .65rem; }
.search-area { position: sticky; z-index: 10; top: 0; display: flex; padding: 12px 18px; gap: 9px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 94%, transparent); backdrop-filter: blur(12px); }
.global-search { display: flex; height: 50px; min-width: 0; flex: 1; align-items: center; gap: 11px; padding: 0 15px; border: 1px solid var(--ink); background: var(--paper); }
.global-search:focus-within { border-color: var(--red); box-shadow: 0 0 0 1px var(--red); }
.global-search svg { width: 20px; flex: 0 0 auto; fill: none; stroke: var(--red); stroke-width: 1.7; }
.global-search input { width: 100%; min-width: 0; border: 0; outline: 0; color: var(--ink); background: transparent; font: 1rem var(--serif); }
.global-search input::placeholder { color: var(--muted); }
.global-search kbd { display: none; padding: .18rem .4rem; border: 1px solid var(--line); border-radius: 3px; color: var(--muted); background: var(--surface); font: .58rem var(--sans); }
.search-clear { padding: 0 9px; border: 0; color: var(--red); background: transparent; font-size: .68rem; cursor: pointer; }
.reading-stage { width: min(100% - 36px, 920px); margin: 0 auto; padding: 52px 0 132px; }
.passage-header { margin-bottom: 38px; }
.passage-header h1, .search-results-header h1 { margin: 12px 0 16px; font: 400 clamp(3.5rem, 16vw, 6rem)/.92 var(--serif); letter-spacing: -.055em; }
.passage-header p, .search-results-header p { max-width: 640px; margin: 0; color: var(--muted); font: italic 1rem/1.6 var(--serif); }
.column-headings { display: none; }
.libretto { border-top: 1px solid var(--ink); }
.libretto-line { position: relative; display: grid; padding: 22px 0; grid-template-columns: 1fr; gap: 8px; border-bottom: 1px solid var(--line); }
.libretto-line.is-current { background: color-mix(in srgb, var(--red) 5%, transparent); }
.speaker { display: block; margin-bottom: 8px; color: var(--red); font-size: .59rem; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
.translation { margin-top: 12px; padding: 15px 16px 17px; border-left: 3px solid var(--translation-line); color: var(--translation-ink); background: var(--translation-bg); }
.translation .speaker { display: none; }
.line-text { margin: 0; font: 1.08rem/1.56 var(--serif); }
.translation .line-text { margin-top: 0; color: var(--translation-ink); font: .94rem/1.62 var(--sans); }
.line-number { display: none; }
mark { padding: 0 .08em; color: inherit; background: #e8cb76; }
.passage-navigation { position: fixed; z-index: 20; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 8px; margin: 0; padding: 10px 18px calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 96%, transparent); box-shadow: 0 -10px 30px rgba(20,18,16,.08); backdrop-filter: blur(12px); }
.mark-complete-button { min-height: 43px; padding: 0 10px; border: 1px solid var(--line); color: var(--muted); background: transparent; font-size: .56rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; cursor: pointer; }
.mark-complete-button:hover, .mark-complete-button.is-complete { color: white; border-color: var(--red); background: var(--red); }
.passage-nav-button { display: flex; min-width: 0; min-height: 43px; padding: 0; align-items: center; gap: 7px; border: 0; background: transparent; text-align: left; cursor: pointer; }
.passage-nav-button.next { justify-content: flex-end; text-align: right; }
.passage-nav-button svg { width: 18px; flex: 0 0 auto; fill: none; stroke: var(--red); stroke-width: 1.6; }
.passage-nav-button span { display: flex; min-width: 0; flex-direction: column; }
.passage-nav-button small { color: var(--muted); font-size: .5rem; letter-spacing: .1em; text-transform: uppercase; }
.passage-nav-button strong { margin-top: 3px; overflow: hidden; font: 400 .84rem var(--serif); text-overflow: ellipsis; white-space: nowrap; }

/* Whole-libretto search */
.search-results-header { margin-bottom: 34px; }
.search-results-header h1 em { color: var(--red); font-weight: 400; }
.search-result { padding: 22px 0; border-top: 1px solid var(--line); }
.search-result:first-child { border-top-color: var(--ink); }
.result-context { display: flex; margin-bottom: 13px; align-items: center; justify-content: space-between; gap: 10px; }
.result-context span { color: var(--muted); font-size: .55rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.result-context button { padding: 0; border: 0; border-bottom: 1px solid currentColor; color: var(--red); background: none; font-size: .62rem; cursor: pointer; }
.result-text { display: grid; gap: 10px; }
.result-text p { margin: 0; font: 1.02rem/1.55 var(--serif); }
.result-text > div > span { display: block; margin-bottom: 7px; color: var(--muted); font-size: .49rem; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.result-translation { padding: 14px 16px; border-left: 3px solid var(--translation-line); color: var(--translation-ink); background: var(--translation-bg); }
.result-translation > span { color: var(--translation-ink) !important; }
.result-translation p { font: .92rem/1.62 var(--sans); }
.empty-state { padding: 60px 20px; border-top: 1px solid var(--ink); text-align: center; }
.empty-state > span { color: var(--red); font: italic 3rem var(--serif); }
.empty-state h2 { margin: 10px 0 4px; font: 2rem var(--serif); }
.empty-state p { margin: 0; color: var(--muted); font: 1rem var(--serif); }

/* Dialogs */
.app-dialog { width: min(560px, calc(100% - 28px)); padding: 40px 24px 26px; border: 0; color: var(--ink); background: var(--surface); box-shadow: 0 30px 100px rgba(0,0,0,.35); }
.app-dialog::backdrop { background: rgba(20,18,16,.72); backdrop-filter: blur(3px); }
.dialog-close { position: absolute; top: 12px; right: 15px; border: 0; color: var(--muted); background: none; font: 2rem/1 var(--serif); cursor: pointer; }
.app-dialog h2 { margin: 12px 0 22px; font: 400 2.5rem/1 var(--serif); letter-spacing: -.04em; }
.app-dialog p { color: var(--muted); font: 1rem/1.62 var(--serif); }
.source-note { padding: 14px; background: var(--paper); font-size: .84rem !important; }
.toast { position: fixed; z-index: 100; right: 18px; bottom: 18px; max-width: calc(100% - 36px); padding: .82rem 1rem; color: white; background: var(--ink); box-shadow: var(--shadow); font-size: .7rem; opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity 160ms ease, transform 160ms ease; }
.toast.is-visible { opacity: 1; transform: translateY(0); }

body.dark { --paper: #171715; --surface: #1e1d1a; --ink: #eee9df; --muted: #aaa39a; --line: #3b3833; --translation-bg: #263337; --translation-ink: #f0f4f3; --translation-line: #7897a1; --shadow: 0 20px 55px rgba(0,0,0,.32); }

@media (min-width: 720px) {
  .site-header { grid-template-columns: 1fr auto 1fr; padding: 0 4vw; }
  .header-context { display: block; }
  .site-header > .icon-button { justify-self: end; }
  .library-shell { padding-top: 90px; }
  .library-shell h1 { font-size: 6rem; }
  .libretto-card { grid-template-columns: 170px 1fr 60px; }
  .mini-cover { height: 220px; }
  .mini-cover strong { font-size: 3rem; }
  .libretto-card-copy { padding: 28px 32px; }
  .libretto-card-copy > strong { font-size: 3rem; }
  .opera-hero { grid-template-columns: minmax(260px, 380px) 1fr; align-items: center; gap: clamp(50px, 8vw, 100px); margin-top: 40px; }
  .opera-cover { width: 100%; aspect-ratio: 4 / 5; }
  .opera-copy h1 { font-size: 7rem; }
  .opera-facts span { font-size: .58rem; }
  .opera-facts strong { font-size: .95rem; }
  .act-row { grid-template-columns: 70px 200px 1fr 30px; align-items: center; }
  .act-row h3 { grid-column: 2; grid-row: 1; margin: 0; }
  .act-row p { grid-column: 3; grid-row: 1; }
  .act-row-arrow { grid-column: 4; grid-row: 1; }
  .reader-topbar { grid-template-columns: 160px minmax(240px, 440px) 1fr; padding: 11px 4vw; }
  .reader-progress { display: block; justify-self: end; }
  .search-area { padding: 16px 4vw; }
  .global-search { max-width: 920px; height: 54px; margin: 0 auto; }
  .global-search kbd { display: inline-block; }
  .search-clear { margin-right: max(0px, calc((100vw - 920px) / 2 - 4vw)); }
  .reading-stage { padding-top: 72px; }
  .column-headings { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; padding-bottom: 11px; border-bottom: 1px solid var(--ink); color: var(--muted); font-size: .58rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
  .column-headings span:nth-child(2) { margin: -11px 0 -11px; padding: 11px 20px; border-left: 3px solid var(--translation-line); color: var(--translation-ink); background: var(--translation-bg); }
  .libretto { border-top: 0; }
  .libretto-line { grid-template-columns: 1fr 1fr; gap: 34px; padding: 24px 0; }
  .translation { grid-column: auto; margin: -24px 0; padding: 24px 20px; }
  .translation .speaker { display: block; }
  .translation .line-text { margin-top: 0; }
  .line-number { position: absolute; display: inline; top: 50%; right: -30px; color: var(--muted); font-size: .54rem; transform: translateY(-50%); }
  .result-text { grid-template-columns: 1fr 1fr; gap: 24px; }
  .passage-navigation { padding-right: max(4vw, calc((100vw - 920px) / 2)); padding-left: max(4vw, calc((100vw - 920px) / 2)); }
  .result-text { grid-template-columns: 1fr 1fr; gap: 34px; }
  .app-dialog { padding: 46px; }
}

@media (min-width: 1000px) {
  .library-shell { width: min(100% - 80px, 900px); }
  .opera-shell { width: min(100% - 80px, 1080px); }
  .reading-stage { width: min(100% - 80px, 920px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}