/* escalas.css · páginas estáticas (escalas, teoría, acerca, contacto, privacidad, 404). Independiente de styles.css de la app.
   Identidad: la de la app (fondo carbón, Literata para la voz, Instrument Sans para la interfaz) y el color por modo como firma:
   la franja de siete colores arriba es la escala de modos; cada página de escala se tiñe con el color de su modo. Neutro = oro de la tónica. */
@font-face { font-family: 'Literata'; font-style: normal; font-weight: 400 900; font-display: swap; src: url(/fonts/literata-latin.woff2) format('woff2'); }
@font-face { font-family: 'Instrument Sans'; font-style: normal; font-weight: 400 700; font-display: swap; src: url(/fonts/instrument-sans-latin.woff2) format('woff2'); }

:root {
  --serif: 'Literata', Georgia, serif; --sans: 'Instrument Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --bg: #0F1319; --sf: #151A22; --sf2: #1B212B; --line: rgba(231,233,228,.13); --line2: rgba(231,233,228,.26);
  --ink: #E7E9E4; --mut: #9AA3AF; --kw: #E9ECEF; --kb: #12161C;
  --m: #E2B04A; --mb: var(--m); --on: #0E1217;
  --s1: #7FAEF0; --s2: #46B9C6; --s3: #A98BEF; --s4: #CBDD55; --s5: #6CCB8B; --s6: #7C93F5; --s7: #EA6A8F;
  --r: 14px; color-scheme: dark light;
}
@media (prefers-color-scheme: light) { :root {
  --bg: #EEF1EF; --sf: #FAFBFA; --sf2: #E5EAE8; --line: rgba(18,23,29,.14); --line2: rgba(18,23,29,.3);
  --ink: #12171D; --mut: #4A5461; --kw: #FFFFFF; --kb: #2B333C;
  --m: #7A5200; --mb: #E2B04A; --on: #1A1405;
  --s1: #5C8FDB; --s2: #1FA3B3; --s3: #8C69DA; --s4: #A9BF1D; --s5: #35A864; --s6: #5A73E3; --s7: #D13F6B;
} }
/* color de cada modo (tinta de texto/acento en --m; relleno de botones en --mb) */
[data-modo="jonico"]    { --m: #7FAEF0; --mb: #7FAEF0; --on: #0E1217; } [data-modo="dorico"]    { --m: #46B9C6; --mb: #46B9C6; --on: #0E1217; }
[data-modo="frigio"]    { --m: #A98BEF; --mb: #A98BEF; --on: #0E1217; } [data-modo="lidio"]     { --m: #CBDD55; --mb: #CBDD55; --on: #0E1217; }
[data-modo="mixolidio"] { --m: #6CCB8B; --mb: #6CCB8B; --on: #0E1217; } [data-modo="eolico"]    { --m: #7C93F5; --mb: #7C93F5; --on: #0E1217; }
[data-modo="locrio"]    { --m: #EA6A8F; --mb: #EA6A8F; --on: #0E1217; }
@media (prefers-color-scheme: light) {
  [data-modo="jonico"] { --m: #1F4E96; --mb: #1F4E96; --on: #fff; } [data-modo="dorico"] { --m: #0B6672; --mb: #0B6672; --on: #fff; }
  [data-modo="frigio"] { --m: #5230A6; --mb: #5230A6; --on: #fff; } [data-modo="lidio"] { --m: #566200; --mb: #566200; --on: #fff; }
  [data-modo="mixolidio"] { --m: #14693A; --mb: #14693A; --on: #fff; } [data-modo="eolico"] { --m: #2B3FA8; --mb: #2B3FA8; --on: #fff; }
  [data-modo="locrio"] { --m: #9A1B45; --mb: #9A1B45; --on: #fff; }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.7 var(--serif); position: relative; }
/* la escala de modos como firma: siete colores, uno por modo */
body::before { content: ''; display: block; height: 5px; background: linear-gradient(90deg, var(--s1) 0 14.28%, var(--s2) 0 28.57%, var(--s3) 0 42.85%, var(--s4) 0 57.14%, var(--s5) 0 71.42%, var(--s6) 0 85.71%, var(--s7) 0); }
a { color: var(--m); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--m); outline-offset: 3px; border-radius: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* cabecera */
.cab { display: flex; flex-wrap: wrap; align-items: center; gap: 0 16px; max-width: 64rem; margin: 0 auto; padding: 8px 20px; font-family: var(--sans); }
.logo { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font: 700 1.25rem/1 var(--serif); letter-spacing: .005em; color: var(--ink); text-decoration: none; margin-right: auto; }
.logo::before { content: ''; width: 20px; height: 20px; flex: none; background: linear-gradient(var(--ink), var(--ink)) 0 0 / 5px 100% no-repeat, linear-gradient(var(--ink), var(--ink)) 7.5px 0 / 5px 100% no-repeat, linear-gradient(var(--m), var(--m)) 15px 0 / 5px 100% no-repeat; border-radius: 1px; }
.cab nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0 4px; font-size: .88rem; }
.cab nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 10px; border-radius: 99px; color: var(--mut); text-decoration: none; }
.cab nav a:hover { color: var(--ink); background: var(--sf2); }
.cab nav a:first-child:not([hreflang]) { color: var(--ink); font-weight: 600; }

main { max-width: 64rem; margin: 0 auto; padding: 4px 20px 56px; }
main > section, main > p, main > nav, main > ul { max-width: 100%; }
.migas { font: .82rem/1.3 var(--sans); color: var(--mut); margin: 6px 0 14px; }
.migas a { color: var(--mut); text-decoration: none; } .migas a:hover { color: var(--ink); text-decoration: underline; }

/* titular */
.hero { position: relative; padding: clamp(24px, 4.5vw, 52px) clamp(20px, 4vw, 48px); margin: 4px 0 8px; border: 1px solid var(--line); border-radius: 22px; overflow: hidden;
  background: radial-gradient(120% 140% at 0 0, color-mix(in srgb, var(--m) 16%, var(--sf)), var(--sf) 62%); }
.hero::after { content: ''; position: absolute; right: -40px; top: -40px; width: 180px; height: 180px; border-radius: 50%; background: radial-gradient(closest-side, color-mix(in srgb, var(--m) 20%, transparent), transparent); pointer-events: none; }
h1 { font: 700 clamp(2rem, 5.6vw, 3.4rem)/1.08 var(--serif); letter-spacing: -.012em; margin: 0 0 14px; text-wrap: balance; }
h2 { font: 650 clamp(1.35rem, 3vw, 1.7rem)/1.2 var(--serif); letter-spacing: -.005em; margin: 0 0 14px; }
h2::before { content: ''; display: block; width: 34px; height: 3px; border-radius: 3px; background: var(--m); margin-bottom: 12px; }
h3 { font: 600 1.05rem/1.35 var(--serif); margin: 22px 0 4px; }
main > section { margin-top: 52px; }
.resp { font-size: clamp(1.05rem, 2.2vw, 1.22rem); line-height: 1.6; max-width: 46rem; margin: 0 0 14px; }
.hero .resp { color: color-mix(in srgb, var(--ink) 88%, transparent); }
p { max-width: 46rem; } li { max-width: 46rem; }
ul { padding-left: 1.2rem; } li::marker { color: var(--m); }
.nota-p { color: var(--mut); font-size: .92rem; }
.hero > :last-child { margin-bottom: 0; }

/* botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .4em; min-height: 48px; background: var(--mb); color: var(--on); padding: 0 22px; border-radius: 12px; text-decoration: none; font: 700 .98rem/1 var(--sans); border: 1px solid transparent; transition: transform .15s, filter .15s; }
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); text-decoration: none; }
.btn.sec { background: transparent; color: var(--ink); border-color: var(--line2); } .btn.sec:hover { background: var(--sf2); filter: none; }
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } .btn:hover { transform: none; } }

/* tablas: tarjeta con cabecera tonal */
.tabla-w { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--sf); }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
.tabla-w table { min-width: 34rem; }
.par .tabla-w table { min-width: 0; }
th, td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
tbody tr:last-child > * { border-bottom: 0; }
thead th { background: var(--sf2); color: var(--mut); font: 600 .74rem/1.2 var(--sans); text-transform: uppercase; letter-spacing: .07em; white-space: nowrap; vertical-align: bottom; }
tbody th { font-weight: 700; white-space: nowrap; background: color-mix(in srgb, var(--m) 5%, var(--sf)); position: sticky; left: 0; }
tbody tr:hover > * { background: color-mix(in srgb, var(--m) 8%, var(--sf)); }
td a, tbody th a { text-decoration: none; font-weight: 700; } td a:hover, tbody th a:hover { text-decoration: underline; }
td strong { color: var(--m); font-weight: 700; }
td { font-variant-numeric: tabular-nums; }
.et { display: inline-block; font: 600 .68rem/1.7 var(--sans); border: 1px solid color-mix(in srgb, var(--m) 70%, transparent); border-radius: 99px; padding: 0 8px; color: var(--m); white-space: nowrap; vertical-align: .08em; margin-left: 4px; }

/* teclado de una octava, con la tabla de grados al lado en escritorio */
.par { display: grid; gap: 18px; align-items: start; }
.tec-w { border: 1px solid var(--line); border-radius: var(--r); background: var(--sf); padding: 20px; }
.tec { width: 100%; max-width: 380px; height: auto; margin: 0 auto; display: block; filter: drop-shadow(0 6px 14px rgba(0,0,0,.28)); }
.tb { fill: var(--kw); stroke: var(--line2); } .tn { fill: var(--kb); }
.tb.on { fill: color-mix(in srgb, var(--m) 70%, var(--kw)); } .tn.on { fill: color-mix(in srgb, var(--m) 80%, var(--kb)); }
.tb.raiz, .tn.raiz { stroke: var(--ink); stroke-width: 2; }
@media (min-width: 52rem) { .par { grid-template-columns: minmax(300px, 400px) 1fr; } }

/* chips de enlaces */
.lista { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 12px 0 0; max-width: none; }
.lista li { max-width: none; }
.lista a { display: inline-block; min-height: 44px; border: 1px solid var(--line); border-radius: 10px; padding: 13px 14px; text-decoration: none; background: var(--sf); color: var(--ink); font: 500 .92rem/1.2 var(--sans); transition: border-color .15s, background .15s; }
.lista a:hover { border-color: var(--m); background: color-mix(in srgb, var(--m) 12%, var(--sf)); color: var(--ink); }
.teo-enl { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; font-family: var(--sans); }
.teo-enl a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border-radius: 99px; border: 1px solid var(--line2); color: var(--ink); text-decoration: none; font-size: .9rem; font-weight: 500; }
.teo-enl a:hover { background: var(--sf2); border-color: var(--m); }
.teo-enl a::after { content: '→'; margin-left: .5em; color: var(--m); }
section.rel .teo-enl { margin: 8px 0 28px; }
section.rel h2 { margin-top: 36px; } section.rel h2:first-child { margin-top: 0; }
.migas a, .pie a { display: inline-block; padding: 12px 3px; }

/* portada de escalas: una tarjeta por modo */
.hub { display: grid; gap: 20px; }
.hub > :not(section) { grid-column: 1 / -1; }
.hub > section { margin: 0; padding: 22px 22px 24px; border: 1px solid var(--line); border-top: 3px solid var(--m); border-radius: var(--r); background: var(--sf); }
.hub > section h2::before { display: none; }
.hub > section h2 { color: var(--ink); margin-bottom: 8px; }
.hub > section > p { color: var(--mut); font-size: .93rem; line-height: 1.55; margin: 0; }
.hub > section .lista a { background: var(--bg); }
@media (min-width: 52rem) { .hub { grid-template-columns: 1fr 1fr; gap: 22px; } }

/* páginas de texto: acerca, contacto */
.prosa { max-width: 50rem; }
.prosa p { font-size: 1.06rem; }
.prosa > h2 { margin-top: 44px; }
.prosa h2 + * { margin-top: 0; }

/* pie */
.pie { max-width: 64rem; margin: 0 auto; padding: 22px 20px 56px; color: var(--mut); font: .86rem/1.5 var(--sans); border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 4px 28px; justify-content: space-between; align-items: center; }
.pie p { margin: 0; max-width: none; }
.pie a { color: var(--mut); text-decoration: none; padding: 12px 6px; } .pie a:hover { color: var(--ink); text-decoration: underline; }

/* círculo de quintas · mayor = jónico, menor = eólico (colores de modo de la app) */
.cq { --cj: #7FAEF0; --ce: #A98BEF; display: block; width: 100%; max-width: 520px; margin: 0 auto; overflow: visible; }
@media (prefers-color-scheme: light) { .cq { --cj: #1F4E96; --ce: #5230A6; } }
.cq text { font: 700 15px 'Instrument Sans', system-ui, sans-serif; text-anchor: middle; dominant-baseline: central; pointer-events: none; fill: var(--ink); }
.cq text.m { font-weight: 600; font-size: 13px; }
.cq text.jonico { fill: var(--on-j, #0E1217); } .cq text.eolico { fill: var(--ce); }
@media (prefers-color-scheme: light) { .cq text.jonico { fill: #fff; } }
.cq .borde { fill: none; stroke: var(--line); }
.cq .banda { fill: none; stroke-dasharray: 1; }
.cq .banda.jonico { stroke: color-mix(in srgb, var(--cj) 17%, transparent); stroke-width: 50; }
.cq .banda.eolico { stroke: color-mix(in srgb, var(--ce) 15%, transparent); stroke-width: 48; }
.cq a { outline: none; cursor: pointer; }
.cq .hit { transition: fill .16s, stroke .16s; }
.cq .hit.may { fill: var(--cj); stroke: var(--cj); stroke-width: 1; }
.cq .hit.men { fill: var(--bg); stroke: color-mix(in srgb, var(--ce) 80%, transparent); stroke-width: 1.5; }
.cq .k { transform-box: fill-box; transform-origin: center; }
.cq .cuna, .cq .rel { opacity: 0; pointer-events: none; transition: opacity .18s; }
.cq .cuna { fill: color-mix(in srgb, var(--cj) 12%, transparent); pointer-events: all; }
.cq .k:hover .cuna, .cq .k:focus-within .cuna, .cq .k:hover .rel, .cq .k:focus-within .rel { opacity: 1; }
.cq .halo { fill: none; stroke-width: 2.5; }
.cq .hv { stroke: var(--cj); } .cq .hs { stroke: var(--cj); stroke-dasharray: 5 4; } .cq .hm { stroke: var(--ce); stroke-width: 2.5; }
.cq a:hover .hit.may, .cq a:focus-visible .hit.may { fill: color-mix(in srgb, var(--cj) 82%, var(--ink)); stroke: var(--ink); stroke-width: 2; }
.cq a:hover .hit.men, .cq a:focus-visible .hit.men { fill: color-mix(in srgb, var(--ce) 22%, var(--bg)); stroke: var(--ce); stroke-width: 2; }
.cq a:focus-visible .hit { stroke: var(--ink); stroke-width: 3; paint-order: stroke; }
.cq a:focus-visible .hit::after { content: none; }
.cq .centro text { fill: var(--ink); }
.cq .c-n { font-size: 23px; font-weight: 800; } .cq .c-a { font-size: 13px; fill: var(--mut); font-weight: 600; }
.cq .c-v, .cq .c-s { font-size: 12.5px; font-weight: 600; }
.cq .c-0 { font-size: 15px; fill: var(--mut); font-weight: 600; }
.cq .centro.on .c-0 { display: none; } .cq .centro:not(.on) .c-n, .cq .centro:not(.on) .c-a, .cq .centro:not(.on) .c-v, .cq .centro:not(.on) .c-s { display: none; }
.cq-ayuda { text-align: center; max-width: 440px; margin: 10px auto 0; font-size: .85rem; }
.cq-w { margin-top: 26px; }
.hero--cq { display: grid; gap: 8px 40px; align-items: center; }
.hero--cq::after { display: none; }
.hero--cq .cq-w { margin-top: 10px; }
@media (min-width: 56rem) { .hero--cq { grid-template-columns: minmax(0, 1fr) minmax(0, 460px); } .hero--cq .cq-w { margin-top: 0; } }
@media (prefers-reduced-motion: no-preference) {
  .cq .banda { animation: cq-trazo .9s cubic-bezier(.3,.6,.2,1) backwards; }
  .cq .banda.eolico { animation-delay: .25s; }
  .cq .k > a { animation: cq-nodo .5s cubic-bezier(.2,.8,.2,1) backwards; animation-delay: calc(.4s + var(--i) * 45ms); }
  .cq .k > a text { transition: none; }
  .cq a:hover .hit.may, .cq a:focus-visible .hit.may, .cq a:hover .hit.men, .cq a:focus-visible .hit.men { transform: scale(1.07); transform-box: fill-box; transform-origin: center; }
  .cq .hit { transition: fill .16s, stroke .16s, transform .16s cubic-bezier(.2,.8,.2,1); }
  @keyframes cq-trazo { from { stroke-dashoffset: 1; } to { stroke-dashoffset: 0; } }
  @keyframes cq-nodo { from { opacity: 0; transform: scale(.7); } to { opacity: 1; transform: none; } }
}
@media (prefers-reduced-motion: reduce) { .cq *, .cq { transition: none !important; animation: none !important; } }

/* intervalos: botones de escucha (los activa /intervalos.js solo si hay Web Audio) */
.esc-c { display: none; }
html.audio th.esc-c, html.audio td.esc-c { display: table-cell; white-space: nowrap; }
html.audio p.esc-c { display: block; }
td.esc-c { padding-block: 4px; }
button.esc { width: 44px; height: 44px; margin: 0 2px; padding: 0; display: inline-grid; place-items: center; border-radius: 50%; border: 1px solid var(--line2); background: var(--bg); color: var(--m); cursor: pointer; transition: background .15s, border-color .15s; }
button.esc svg { width: 20px; height: 20px; fill: currentColor; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
button.esc:hover { border-color: var(--m); background: color-mix(in srgb, var(--m) 14%, var(--bg)); }
button.esc.on { background: var(--mb); color: var(--on); border-color: var(--mb); }

/* interruptor ♯ / ♭ */
.alt-sw { display: inline-flex; border: 1px solid var(--line2); border-radius: 12px; overflow: hidden; background: var(--sf); order: 2; }
.alt-sw button { font: 700 1rem/1 var(--sans); min-width: 44px; min-height: 44px; padding: 0 12px; border: 0; background: transparent; color: var(--mut); cursor: pointer; }
.alt-sw button[aria-pressed="true"] { background: var(--mb); color: var(--on); }
.cab nav { order: 3; }

/* 404 */
.n404 { font: 700 clamp(4rem, 16vw, 9rem)/.9 var(--serif); color: color-mix(in srgb, var(--m) 70%, transparent); letter-spacing: -.03em; margin: 0 0 10px; }
.acciones { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

/* móvil */
@media (max-width: 40rem) {
  body { font-size: 16.5px; }
  .cab { padding-inline: 14px; }
  .cab nav { order: 4; flex: 1 0 100%; flex-wrap: nowrap; overflow-x: auto; margin: 0 -14px; padding: 0 14px 6px; scrollbar-width: none; }
  .cab nav::-webkit-scrollbar { display: none; }
  .cab nav a { white-space: nowrap; flex: none; }
  main { padding-inline: 14px; }
  .hero { border-radius: 18px; }
  .hub > section { padding: 18px; }
  .pie { padding-inline: 14px; }
  th, td { padding: 9px 10px; }
  .tec-w { padding: 14px; }
}

/* selector de timbre en /intervalos/ */
.timbre { display: flex; align-items: center; gap: 10px; margin: 0 0 14px; color: var(--mut, #a8a193); font-size: .9375rem; }
.timbre select { font: inherit; color: inherit; background: var(--sf, #1b1a17); border: 1px solid var(--line2, #3a372f); border-radius: 10px; min-height: 44px; padding: 0 12px; }
.timbre select:focus-visible { outline: 3px solid currentColor; outline-offset: 2px; }