/* ==========================================================
   Catálogo de partituras
   Idea: el interior de un estuche de instrumento (terciopelo
   azul y herrajes de latón) con las partituras encima.
   ========================================================== */

.atril {
    --estuche: #1b2840;
    --estuche-hondo: #121c2f;
    --papel: #ffffff;
    --tinta: #1a1d24;
    --laton: #c9a24c;
    --laton-claro: #e2c47f;
    --claro: #e8ebf2;
    --tenue: #a9b4cc;
    --serif: 'Spectral', Georgia, 'Times New Roman', serif;

    position: relative;
    margin-top: 2.5rem;
    padding: 3.5rem 0 4.5rem;
    color: var(--claro);
    background:
        radial-gradient(120% 70% at 50% 0%, #26365a 0%, rgba(38, 54, 90, 0) 60%),
        linear-gradient(180deg, var(--estuche) 0%, var(--estuche-hondo) 100%);
    border-top: 3px solid var(--laton);
}

.atril h2, .atril h3, .atril p, .visor h2, .visor p { margin: 0; }
.atril .sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.atril--pagina { margin-top: 0; border-top: 0; padding-top: 2.5rem; min-height: 70vh; }
.atril--pagina .atril__inner { max-width: 64rem; }
.atril__aviso a, .atril__limpiar a, .atril__legal a { color: var(--laton-claro); font-weight: 600; }

.atril__inner {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1rem;
}
@media (min-width: 640px) { .atril__inner { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .atril__inner { padding: 0 2rem; } }

/* ---------- Encabezado y buscador ---------- */
.atril__head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: .5rem 2rem;
}
.atril__titulo {
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(1.9rem, 3.4vw, 2.75rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
    color: #fff;
}
.atril__cuenta {
    color: var(--tenue);
    font-size: .95rem;
}

.atril__buscar {
    position: relative;
    margin: 1.75rem 0 2.75rem;
    max-width: 40rem;
}
.atril__buscar input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3.1rem;
    font-size: 1.05rem;
    color: var(--tinta);
    background: var(--papel);
    border: 2px solid transparent;
    border-radius: 999px;
    outline: none;
    box-shadow: 0 6px 20px rgba(5, 10, 20, .35);
}
.atril__buscar input:focus-visible { border-color: var(--laton); }
.atril__buscar input { padding-right: 7.5rem; }
.atril__buscar-boton {
    position: absolute; right: .4rem; top: 50%; transform: translateY(-50%);
    padding: .65rem 1.2rem; font: 700 .95rem var(--sans, 'Inter', sans-serif);
    color: var(--tinta); background: var(--laton); border: 0; border-radius: 999px; cursor: pointer;
}
.atril__buscar-boton:hover { background: var(--laton-claro); }
.atril__buscar-boton:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.atril__limpiar { margin: -1.75rem 0 2.25rem; font-size: .95rem; }
.atril__legal { margin-top: 4rem; text-align: center; font-size: .88rem; color: var(--tenue); }
.atril__puntos { align-self: center; color: var(--tenue); padding: 0 .2rem; }
.atril__buscar svg {
    position: absolute;
    left: 1.15rem;
    top: 50%;
    transform: translateY(-50%);
    color: #7a8296;
    pointer-events: none;
}

/* ---------- Rejilla de hojas ---------- */
.atril__hojas {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.75rem;
    max-width: 24rem;
    margin: 0 auto;
}
@media (min-width: 600px) {
    .atril__hojas { grid-template-columns: repeat(2, 1fr); max-width: 40rem; gap: 3rem 2rem; }
}
@media (min-width: 960px) {
    .atril__hojas { grid-template-columns: repeat(3, 1fr); max-width: 60rem; gap: 3.25rem 2.25rem; }
}
/* En celular, el script muestra 5 por página */
.atril__hojas .hoja[hidden] { display: none; }

.hoja { display: flex; flex-direction: column; min-width: 0; }

/* La hoja de papel: una página con otra asomándose detrás (las demás partes). */
.hoja__papel {
    position: relative;
    display: block;
    padding: 0;
    border: 0;
    background: none;
    cursor: zoom-in;
    text-align: left;
}
.hoja__fondo {
    position: absolute;
    inset: 6px -6px -6px 6px;
    background: #dfe3ea;
    border-radius: 2px;
    transform: rotate(1.6deg);
    box-shadow: 0 10px 22px rgba(3, 8, 18, .45);
}
.hoja__pagina {
    position: relative;
    display: block;
    aspect-ratio: 5 / 6;
    overflow: hidden;
    border-radius: 2px;
    /* Pentagrama vacío mientras carga la miniatura */
    background-color: var(--papel);
    background-image: repeating-linear-gradient(
        180deg,
        transparent 0, transparent 22px,
        #e3e6ec 22px, #e3e6ec 23px,
        transparent 23px, transparent 27px,
        #e3e6ec 27px, #e3e6ec 28px,
        transparent 28px, transparent 32px,
        #e3e6ec 32px, #e3e6ec 33px,
        transparent 33px, transparent 37px,
        #e3e6ec 37px, #e3e6ec 38px,
        transparent 38px, transparent 42px,
        #e3e6ec 42px, #e3e6ec 43px,
        transparent 43px, transparent 62px
    );
    background-position: 0 18px;
    background-clip: padding-box;
    box-shadow: 0 1px 0 rgba(255,255,255,.6) inset, 0 14px 28px rgba(3, 8, 18, .5);
}
.hoja__pagina img,
.hoja__pagina canvas {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    background: var(--papel);
}
.hoja__pagina img.es-oculta { visibility: hidden; }
.hoja__papel:hover .hoja__pagina { outline: 3px solid var(--laton-claro); outline-offset: 3px; }
.hoja__papel:focus-visible { outline: none; }
.hoja__papel:focus-visible .hoja__pagina { outline: 3px solid var(--laton); outline-offset: 4px; }

/* ---------- Datos de la partitura ---------- */
.hoja__datos { margin-top: 1.15rem; display: flex; flex-direction: column; flex-grow: 1; }
.hoja__titulo {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 1.22rem;
    line-height: 1.25;
    color: #fff;
    overflow-wrap: anywhere;
}
.atril .hoja__grupo {
    margin-top: .2rem;
    color: var(--laton-claro);
    font-size: .92rem;
}
.atril .hoja__descargas { margin-top: .35rem; color: var(--tenue); font-size: .85rem; font-variant-numeric: tabular-nums; }
.hoja__acciones {
    margin-top: auto;
    padding-top: .95rem;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: .6rem;
}
.hoja__ver, .hoja__bajar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0 1.15rem;
    font: 700 .95rem var(--sans, 'Inter', sans-serif);
    border-radius: 999px;
    text-decoration: none;
    cursor: pointer;
}
.hoja__ver { color: var(--claro); background: transparent; border: 1.5px solid rgba(232, 235, 242, .45); }
.hoja__ver:hover { border-color: var(--laton-claro); color: #fff; }
.hoja__bajar { color: var(--tinta); background: var(--laton); border: 0; }
.hoja__bajar:hover { background: var(--laton-claro); }
.hoja__ver:focus-visible, .hoja__bajar:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }


/* ---------- Avisos ---------- */
.atril__aviso {
    max-width: 40rem;
    padding: 1.5rem 1.75rem;
    background: rgba(255, 255, 255, .06);
    border-left: 3px solid var(--laton);
    border-radius: 4px;
}
.atril__aviso h2, .atril__aviso h3 { font-family: var(--serif); font-size: 1.3rem; color: #fff; font-weight: 600; }
.atril .atril__aviso p { margin-top: .4rem; color: var(--tenue); }

/* ---------- Paginación ---------- */
.atril__paginas {
    margin-top: 3.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: .4rem;
}
.atril__paginas a, .atril__paginas button {
    min-width: 2.6rem;
    height: 2.6rem;
    padding: 0 .7rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--claro);
    border: 1px solid rgba(232, 235, 242, .25);
    border-radius: 999px;
    font-weight: 600;
    font-size: .92rem;
    text-decoration: none;
}
.atril__paginas button { background: transparent; cursor: pointer; font-family: inherit; }
.atril__paginas a:hover, .atril__paginas button:hover { border-color: var(--laton-claro); color: #fff; }
.atril__paginas [aria-current="page"] { background: var(--laton); border-color: var(--laton); color: var(--tinta); }
.atril__paginas a:focus-visible, .atril__paginas button:focus-visible { outline: 3px solid var(--laton); outline-offset: 2px; }

/* ==========================================================
   Visor de partituras
   ========================================================== */
.visor {
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    color: #e8ebf2;
    background: #121c2f;
}
.visor::backdrop { background: rgba(8, 12, 22, .85); }
.visor[open] { display: flex; flex-direction: column; }

.visor__barra {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: .9rem 1rem .9rem 1.5rem;
    background: #1b2840;
    border-bottom: 3px solid #c9a24c;
}
.visor__texto { flex: 1; min-width: 0; }
.visor__titulo {
    font-family: 'Spectral', Georgia, serif;
    font-weight: 600;
    font-size: 1.35rem;
    line-height: 1.2;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.visor .visor__info { margin-top: .1rem; color: #a9b4cc; font-size: .88rem; margin-top: .1rem; }
.visor__bajar {
    flex-shrink: 0;
    padding: .55rem 1.1rem;
    font-weight: 700;
    font-size: .9rem;
    color: #1a1d24;
    background: #c9a24c;
    border-radius: 999px;
    text-decoration: none;
}
.visor__bajar:hover { background: #e2c47f; }
.visor__cerrar {
    flex-shrink: 0;
    width: 2.75rem;
    height: 2.75rem;
    display: grid;
    place-items: center;
    color: #e8ebf2;
    background: transparent;
    border: 1px solid rgba(232, 235, 242, .3);
    border-radius: 999px;
    cursor: pointer;
}
.visor__cerrar:hover { border-color: #e2c47f; color: #fff; }
.visor__bajar:focus-visible, .visor__cerrar:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }

.visor__paginas {
    flex: 1;
    overflow-y: auto;
    padding: 2rem 1rem 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    outline: none;
}
.visor__paginas canvas {
    width: 100%;
    max-width: 52rem;
    height: auto;
    background: #fff;
    border-radius: 2px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, .5);
}
.visor__estado { margin-top: 3rem; color: #a9b4cc; text-align: center; max-width: 28rem; }
.visor__estado a { color: #e2c47f; font-weight: 700; }

@media (max-width: 560px) {
    .visor__barra { padding-left: 1rem; gap: .6rem; }
    .visor__titulo { font-size: 1.1rem; }
    .visor__bajar { padding: .5rem .85rem; font-size: .82rem; }
    .visor__paginas { padding: 1rem .5rem 2rem; gap: 1rem; }
}

@media (prefers-reduced-motion: no-preference) {
    .visor[open] { animation: visor-entra .22s ease-out; }
    @keyframes visor-entra { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
}

/* Paginación del celular */
.atril__pagina-de { flex-basis: 100%; text-align: center; margin-top: .6rem; color: var(--tenue); font-size: .88rem; }
#paginasMovil { margin-top: 2.75rem; }