/* =====================================================================
   urPiano — content pages (SEO sections, songs, chords, hub)
   ===================================================================== */

.content { background: var(--surface); }
.wrap { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 max(22px, env(safe-area-inset-left)); }
.sec { padding: clamp(56px, 9vw, 104px) 0; }
.sec:not(.sec--alt):not(.sec--shelf) + .sec:not(.sec--alt):not(.sec--shelf) { padding-top: 0; }
.sec--alt { background: var(--surface-2); }
.sec--intro { padding-bottom: clamp(32px, 5vw, 56px); }

.content h2, .page h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 36px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.022em;
  margin: 0 0 16px;
  text-wrap: balance;
}
.content h3, .page h3 { font-size: 19px; font-weight: 600; letter-spacing: -0.012em; margin: 28px 0 8px; }
.display {
  font-size: clamp(34px, 5.6vw, 60px) !important;
  line-height: 1.04 !important;
  letter-spacing: -0.032em !important;
  max-width: 15ch;
}
.lede { font-size: clamp(19px, 2vw, 23px); line-height: 1.42; color: var(--ink-2); max-width: 36em; margin: 0; letter-spacing: -0.012em; text-wrap: pretty; }
.measure { max-width: 40em; color: var(--ink-2); }
.content p, .page p { margin: 0 0 1em; text-wrap: pretty; }
.note { font-size: 15px; color: var(--ink-3); }
.note kbd, .page kbd {
  font: 600 13px/1 var(--font);
  padding: 3px 7px;
  border-radius: 6px;
  background: var(--surface);
  box-shadow: inset 0 0 0 0.5px var(--line), 0 1px 0 var(--line);
  color: var(--ink);
}

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(32px, 6vw, 72px); align-items: center; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }

/* keyboard map figure */
.keymap {
  margin: 0;
  padding: 22px 22px 16px;
  border-radius: 22px;
  background: linear-gradient(180deg, var(--surface-2), var(--surface-3));
  display: grid;
  gap: 8px;
  direction: ltr;
  overflow-x: auto;
}
.keymap-row { display: flex; gap: 8px; }
.keymap-row--offset { padding-left: 22px; }
.keymap-row--offset2 { padding-left: 34px; margin-top: 10px; }
.keymap-row--offset3 { padding-left: 12px; }
.keymap-row--space { margin-top: 10px; padding-left: 12px; }
.cap {
  flex: none;
  width: 46px;
  height: 50px;
  border-radius: 9px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.12), 0 0 0 0.5px var(--line);
}
.cap b { font-size: 15px; font-weight: 600; line-height: 1; }
.cap i { font-style: normal; font-size: 11px; color: var(--brass-ink); font-weight: 600; font-family: var(--font-round); }
.cap.is-black { background: #1e1e20; color: #f5f5f7; box-shadow: 0 1px 0 rgba(0, 0, 0, 0.5); }
.cap.is-black i { color: var(--brass-hi); }
.cap.is-gap { visibility: hidden; }
.cap--space { width: 150px; }
:root[data-theme="dark"] .cap i { color: var(--brass-hi); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .cap i { color: var(--brass-hi); } }
.keymap figcaption { font-size: 13px; color: var(--ink-3); margin-top: 6px; direction: initial; }
@media (max-width: 520px) { .cap { width: 36px; height: 44px; } .cap--space { width: 110px; } .cap b { font-size: 13px; } .cap i { font-size: 9.5px; } .keymap { padding: 16px 12px 12px; } }

/* song list (ranked) */
.songlist {
  list-style: none;
  margin: 28px 0 32px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 28px;
  counter-reset: song;
}
@media (max-width: 700px) { .songlist { grid-template-columns: 1fr; } }
.songlist li { counter-increment: song; }
.songlist a {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 12px;
  align-items: center;
  padding: 12px 12px;
  margin: 0 -12px;
  border-radius: 12px;
  color: var(--ink);
  text-decoration: none;
}
.songlist a::before {
  content: counter(song);
  grid-row: 1 / 3;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.songlist a:hover { background: var(--fill); text-decoration: none; }
.songlist-title { font-weight: 600; font-size: 17px; letter-spacing: -0.012em; }
.songlist-meta { grid-column: 2; font-size: 14px; color: var(--ink-3); }
.songlist .lvl { grid-column: 3; grid-row: 1 / 3; }

/* features */
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 48px; margin: 36px 0 0; }
@media (max-width: 700px) { .features { grid-template-columns: 1fr; gap: 24px; } }
.features dt { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; letter-spacing: -0.012em; margin-bottom: 6px; }
.features dt .i { width: 24px; height: 24px; color: var(--brass); }
.features dd { margin: 0; color: var(--ink-2); font-size: 16px; padding-inline-start: 34px; }

/* shelf */
.sec--shelf { background: var(--surface-2); }
.shelf {
  list-style: none;
  margin: 28px auto 0;
  padding: 0 max(22px, calc((100% - 1040px) / 2 + 22px));
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 1fr);
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding: 0 22px;
  max-width: 1300px;
  scrollbar-width: none;
}
.shelf::-webkit-scrollbar { display: none; }
.tile { scroll-snap-align: start; }
.sec--hub { background: var(--surface); padding-top: 8px; }
.shelf--hub { grid-auto-flow: row; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 40px 24px; max-width: 1040px; padding: 0 max(22px, env(safe-area-inset-left)); margin-top: 0; overflow: visible; }
.shelf--hub .tile-art { border-radius: 22px; }
.shelf--hub .tile-name { font-size: 21px; }
.shelf--hub .tile-desc { font-size: 15px; }
.tile a { display: flex; flex-direction: column; gap: 4px; color: var(--ink); text-decoration: none; }
.tile-art { width: 100%; height: auto; aspect-ratio: 2 / 1; border-radius: 18px; display: block; margin-bottom: 10px; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08); transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1); }
.tile a:hover .tile-art { transform: translateY(-3px); }
.tile a:hover { text-decoration: none; }
.tile-name { font-weight: 600; font-size: 17px; letter-spacing: -0.012em; }
.tile-desc { font-size: 14px; color: var(--ink-3); line-height: 1.4; }

/* FAQ */
.faq { margin-top: 24px; max-width: 46em; }
.faq details { border-bottom: 0.5px solid var(--line); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 36px 18px 0;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.012em;
  position: relative;
}
[dir="rtl"] .faq summary { padding: 18px 0 18px 36px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  inset-inline-end: 4px;
  top: 50%;
  width: 12px;
  height: 12px;
  margin-top: -6px;
  background: linear-gradient(currentColor, currentColor) center / 12px 1.7px no-repeat, linear-gradient(currentColor, currentColor) center / 1.7px 12px no-repeat;
  color: var(--ink-3);
  transition: transform 0.25s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 20px; color: var(--ink-2); max-width: 40em; }

/* footer */
.footer { background: var(--surface-2); color: var(--ink-2); font-size: 14px; padding: 56px 0 28px; border-top: 0.5px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(2, 1fr); gap: 32px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer h2 { font-size: 13px; font-weight: 600; color: var(--ink); margin: 0 0 12px; letter-spacing: 0; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer a { color: var(--ink-2); }
.footer a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.footer-brand p { margin: 12px 0 0; max-width: 26em; color: var(--ink-3); }
.footer-brand .brand { padding: 0; }
.footer-legal { margin-top: 40px; padding-top: 18px; border-top: 0.5px solid var(--line); color: var(--ink-3); font-size: 12px; display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; flex-wrap: wrap; }
.footer-legal p { margin: 0; }
.footer .lang summary { color: var(--ink-2); font-size: 13px; box-shadow: inset 0 0 0 0.5px var(--line); }
.footer .lang ul { display: block; }
.footer-legal .lang { margin-inline-start: auto; }
.footer-links { display: flex; gap: 6px 18px; flex-wrap: wrap; }
.footer-links a { color: var(--ink-3); }
.footer-links a:hover { color: var(--ink-2); }

/* contact + terms */
.legal-list { max-width: 44em; margin: 0 0 36px; padding-inline-start: 1.4em; color: var(--ink-2); }
.legal-list li { margin-bottom: 14px; padding-inline-start: 4px; text-wrap: pretty; }
.legal-back { margin-top: 8px; } /* stays at the end edge when it wraps, so the list opens on-screen */

/* ---------------------------------------------------------------- content page chrome */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--lacquer) 82%, transparent);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  backdrop-filter: blur(20px) saturate(1.8);
  box-shadow: inset 0 -0.5px 0 var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 8px; height: 52px; }
.site-nav { display: flex; align-items: center; gap: 2px; margin-inline-start: auto; }
.site-nav a { padding: 7px 11px; border-radius: 9px; color: var(--ink); font-size: 14px; font-weight: 500; }
.site-nav a:hover { background: var(--fill); text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--brass-ink); }
:root[data-theme="dark"] .site-nav a[aria-current="page"] { color: var(--brass-hi); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .site-nav a[aria-current="page"] { color: var(--brass-hi); } }
.lang { position: relative; }
.lang summary { list-style: none; display: flex; align-items: center; gap: 6px; padding: 7px 10px; border-radius: 9px; cursor: pointer; font-size: 14px; font-weight: 500; }
.lang summary::-webkit-details-marker { display: none; }
.lang summary:hover { background: var(--fill); }
.lang ul { position: absolute; inset-inline-end: 0; top: calc(100% + 6px); list-style: none; margin: 0; padding: 6px; min-width: 180px; border-radius: 14px; background: var(--pop-bg); -webkit-backdrop-filter: blur(30px) saturate(1.8); backdrop-filter: blur(30px) saturate(1.8); box-shadow: var(--shadow-pop); z-index: 5; }
.lang li a { display: block; padding: 8px 10px; border-radius: 8px; color: var(--ink); font-size: 14px; }
.lang li a:hover { background: var(--fill); text-decoration: none; }
.lang li a[aria-current="page"] { font-weight: 600; }
.lang summary .chev { width: 14px; height: 14px; opacity: 0.6; transition: transform 0.15s; }
.lang[open] summary .chev { transform: rotate(180deg); }
.lang--up ul { top: auto; bottom: calc(100% + 6px); }
.nav-toggle { display: none; }
@media (max-width: 720px) {
  .site-nav { display: none; position: absolute; top: 52px; left: 0; right: 0; flex-direction: column; align-items: stretch; padding: 8px 14px 14px; background: var(--lacquer); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12); }
  .site-header.is-open .site-nav { display: flex; }
  .nav-toggle { display: inline-flex; margin-inline-start: auto; }
  .site-nav a { padding: 12px; font-size: 16px; }
}

.page-hero { padding: clamp(40px, 7vw, 88px) 0 clamp(24px, 4vw, 40px); }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5.4vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.032em;
  font-weight: 700;
  margin: 0 0 14px;
  text-wrap: balance;
  max-width: 18ch;
}
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0 0 18px; padding: 0; font-size: 14px; color: var(--ink-3); }
.crumbs li + li::before { content: "/"; margin-inline-end: 6px; color: var(--ink-3); opacity: 0.6; }
.crumbs a { color: var(--ink-2); }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 24px; }
.chip { height: 34px; padding: 0 14px; border-radius: 17px; border: 0; background: var(--fill); font-size: 14px; font-weight: 500; color: var(--ink); }
.chip.is-on { background: var(--ink); color: var(--surface); }

/* song index */
.song-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 2px 28px; }
.song-row { display: flex; align-items: center; gap: 14px; padding: 14px 12px; margin: 0 -12px; border-radius: 14px; color: var(--ink); }
.song-row:hover { background: var(--fill); text-decoration: none; }
.song-row .song-glyph { width: 44px; height: 44px; border-radius: 12px; flex: none; display: grid; place-items: center; background: linear-gradient(180deg, #232326, #0e0e10); color: var(--brass-hi); font-family: var(--font-serif); font-size: 20px; }
.song-row b { display: block; font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
.song-row small { display: block; font-size: 13px; color: var(--ink-3); }
.song-row .lvl { margin-inline-start: auto; }

/* song page */
.song-meta { display: flex; flex-wrap: wrap; gap: 10px 32px; margin: 18px 0 0; }
.song-meta div { display: flex; flex-direction: column; }
.song-meta dt { font-size: 12px; color: var(--ink-3); font-weight: 500; }
.song-meta dd { margin: 0; font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }

.player {
  position: relative;
  margin: 8px auto 0;
  max-width: 1200px;
  border-radius: 24px;
  overflow: hidden;
  background: var(--lacquer);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.16), 0 0 0 0.5px var(--line);
}
.player-wrap { padding: 0 max(12px, env(safe-area-inset-left)); }
.player .app { height: clamp(380px, 62vh, 560px); min-height: 0; }
.player .app.is-fullscreen { height: 100%; }

.letters { display: grid; gap: 14px; margin: 18px 0 8px; }
.letters-line {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--surface-2);
  direction: ltr;
  font-family: var(--font-round);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.letters-line span { min-width: 1.6em; text-align: center; padding: 2px 4px; border-radius: 6px; }
.letters-line span.l { color: var(--hl-left); }
.letters-line span.long::after { content: "—"; opacity: 0.35; margin-left: 2px; font-weight: 400; }
.letters-line .bl { color: var(--ink-3); font-weight: 300; padding: 2px 0; min-width: 0; opacity: 0.6; }
.letters-line [data-midi] { cursor: pointer; }
.letters-line [data-midi]:hover { background: var(--fill); }
.letters-line small { flex-basis: 100%; font-family: var(--font); font-size: 12px; font-weight: 500; color: var(--ink-3); margin-bottom: 2px; }
.vp { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 17px; letter-spacing: 0.04em; }

.tips { padding-inline-start: 1.2em; color: var(--ink-2); }
.tips li { margin-bottom: 8px; }

/* chord index */
.chord-table-wrap { overflow-x: auto; margin: 0 -22px; padding: 0 22px; }
.chord-table { border-collapse: separate; border-spacing: 4px; font-size: 15px; min-width: 640px; }
.chord-table th { font-weight: 600; font-size: 13px; color: var(--ink-3); text-align: start; padding: 4px 8px; white-space: nowrap; }
.chord-table th[scope="row"] { font-family: var(--font-display); font-size: 20px; color: var(--ink); letter-spacing: -0.02em; }
.chord-table td a { display: block; padding: 8px 10px; border-radius: 9px; background: var(--surface-2); color: var(--ink); font-weight: 500; white-space: nowrap; text-align: center; }
.chord-table td a:hover { background: var(--fill-2); text-decoration: none; }

/* chord page */
.chord-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
@media (max-width: 820px) { .chord-hero { grid-template-columns: 1fr; } }
.chord-notes { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0 22px; direction: ltr; }
.chord-notes span {
  min-width: 56px;
  height: 56px;
  padding: 0 12px;
  border-radius: 16px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.chord-notes span small { font-family: var(--font); font-size: 11px; font-weight: 500; color: var(--ink-3); letter-spacing: 0; }
.chord-notes span:first-child { background: linear-gradient(180deg, var(--brass-hi), var(--brass)); color: #2b1e07; }
.chord-notes span:first-child small { color: #5b4312; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; }

.mini-kbd { position: relative; width: 100%; direction: ltr; user-select: none; -webkit-user-select: none; touch-action: manipulation; }
.mini-kbd svg { width: 100%; height: auto; display: block; filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.14)); }
.mini-kbd .mk-w { fill: #fbfaf6; stroke: #cfcbc2; stroke-width: 1; cursor: pointer; }
.mini-kbd .mk-b { fill: #1a1a1b; cursor: pointer; }
.mini-kbd .mk-w.on { fill: color-mix(in srgb, var(--hl) 55%, #fff); }
.mini-kbd .mk-b.on { fill: color-mix(in srgb, var(--hl) 85%, #222); }
.mini-kbd .mk-w.down { fill: color-mix(in srgb, var(--hl) 80%, #fff); }
.mini-kbd .mk-b.down { fill: var(--hl); }
.mini-kbd text { font-family: var(--font-round); font-weight: 700; pointer-events: none; }
.mini-kbd .mk-lbl { fill: #6b5320; font-size: 13px; }
.mini-kbd .mk-lbl-b { fill: #fff; font-size: 10px; }
.mini-kbd .mk-fing { fill: #2b1e07; font-size: 11px; }

.inversions { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 28px; margin-top: 20px; }
.inversion h3 { margin: 10px 0 2px; font-size: 16px; }
.inversion p { margin: 0; font-size: 14px; color: var(--ink-3); }
.inversion button { border: 0; background: none; padding: 0; width: 100%; text-align: inherit; }

.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin: 22px 0; }
.facts div { padding: 16px; border-radius: 16px; background: var(--surface-2); }
.facts dt { font-size: 12px; color: var(--ink-3); font-weight: 500; }
.facts dd { margin: 4px 0 0; font-size: 17px; font-weight: 600; letter-spacing: -0.01em; direction: ltr; text-align: start; }
[dir="rtl"] .facts dd { text-align: end; }

.related { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 14px 0 0; }
.related a { display: inline-flex; padding: 8px 14px; border-radius: 18px; background: var(--surface-2); color: var(--ink); font-size: 14px; font-weight: 500; }
.related a:hover { background: var(--fill-2); text-decoration: none; }

/* hub */
.hub { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 36px 28px; }
.hub .tile-art { border-radius: 22px; }
.hub .tile-name { font-size: 21px; }
.hub .tile-desc { font-size: 15px; }