/* Interfaz del libro (HTML sobre la escena): botón de sonido, listón del índice, "Toca para abrir el cuento" con
   manita, notitas y stickers de cada página (papel pegado con cinta, sellos), puntitos de página con ‹ ›, botones del
   final. Legibilidad: textos ≥ 16 px, contraste alto, áreas táctiles ≥ 44 px; ningún brillo por detrás del texto. */

/* ---------- botón de sonido ---------- */
.sound-btn { position: absolute; z-index: 5; top: calc(10px + env(safe-area-inset-top)); right: 10px; width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; border: 0; cursor: pointer; color: var(--cream);
  background: rgba(26, 22, 64, .55); box-shadow: inset 0 0 0 1.5px rgba(255, 247, 236, .3); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.sound-btn:focus-visible, .ribbon:focus-visible, .pg-btn:focus-visible, .dot:focus-visible { outline: 3px solid var(--theme-gold); outline-offset: 2px; }

/* ---------- listón separador (abre el índice): cinta de tela del color del tema con corte en V ---------- */
.ribbon { position: absolute; z-index: 4; left: 0; top: 0; width: 44px; height: 92px; margin: 0; padding: 0; border: 0; background: none; cursor: pointer; transform: translate(-50%, -100%); transition: opacity .4s ease; }
.ribbon::before { content: ""; position: absolute; left: 11px; right: 11px; top: 4px; bottom: 0;
  background: linear-gradient(90deg, var(--theme-lo), var(--theme) 45%, var(--theme-hi) 55%, var(--theme) 70%, var(--theme-lo));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 86%, 0 100%); box-shadow: 0 2px 6px rgba(0, 0, 0, .3);
  animation: ribbon-sway 4s ease-in-out infinite; transform-origin: 50% 100%; }
.ribbon::after { content: ""; position: absolute; left: 13px; right: 13px; top: 6px; bottom: 16px; border-left: 1.5px dashed rgba(255, 255, 255, .45); border-right: 1.5px dashed rgba(255, 255, 255, .45); pointer-events: none; }
.ribbon-lbl { position: absolute; left: 50%; top: -30px; transform: translateX(-50%); padding: 3px 8px; border-radius: 8px; background: rgba(26, 22, 64, .72); font: 600 13px/1.2 var(--font-head); color: var(--cream); white-space: nowrap; pointer-events: none; }
@keyframes ribbon-sway { 50% { transform: rotate(3deg); } }
.rm .ribbon::before { animation: none; }
/* abierto: cae desde el borde de arriba sobre el lomo (el corte en V abajo) y la etiqueta al final */
.ribbon.is-down { transform: translate(-50%, -6px); height: 78px; }
.ribbon.is-down::before { transform-origin: 50% 0; }
.ribbon.is-down .ribbon-lbl { top: -30px; transition: opacity .5s ease; } /* (arriba del borde del libro: no tapa el texto) */
/* (la etiqueta se ve unos segundos al abrir el libro; después sólo el listón, para no tapar el texto) */
.ribbon.is-quiet .ribbon-lbl { opacity: 0; }
.ribbon.is-hidden { opacity: 0; pointer-events: none; }

/* ---------- "Toca para abrir el cuento" ---------- */
.open-cta { position: absolute; z-index: 3; left: 50%; bottom: calc(40px + env(safe-area-inset-bottom)); transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; margin: 0; padding: 0; border: 0; background: none; cursor: pointer; text-align: center; opacity: 0; transition: opacity .6s ease; pointer-events: none; }
.open-cta.is-on { opacity: 1; pointer-events: auto; }
.open-cta .cta-txt { padding: 10px 20px; border-radius: 999px; font: 600 19px/1.2 var(--font-head); color: var(--ink); background: var(--paper); box-shadow: 0 4px 0 #D9C7A5, 0 10px 24px rgba(0, 0, 0, .35); animation: cta-breath 2.6s ease-in-out infinite; }
@keyframes cta-breath { 50% { transform: scale(1.04); } }
.hand { position: absolute; z-index: 4; left: 0; top: 0; width: 64px; height: 64px; pointer-events: none; opacity: 0; transform: translate(-30%, -20%); }
.hand.is-on { animation: hand-tap 1.6s ease-in-out infinite; }
@keyframes hand-tap { 0% { opacity: 0; transform: translate(-30%, 10%) scale(1); } 20% { opacity: 1; } 45% { transform: translate(-30%, -20%) scale(.9); } 60% { transform: translate(-30%, -20%) scale(1); opacity: 1; } 100% { opacity: 0; transform: translate(-30%, -20%); } }
.hand.is-drag { animation: hand-drag 2.2s ease-in-out infinite; }
@keyframes hand-drag { 0% { opacity: 0; transform: translate(0, 0); } 15% { opacity: 1; } 70% { opacity: 1; transform: translate(-120px, -18px) rotate(-12deg); } 100% { opacity: 0; transform: translate(-120px, -18px) rotate(-12deg); } }
.rm .open-cta .cta-txt, .rm .hand.is-on, .rm .hand.is-drag { animation: none; }
.rm .hand.is-on, .rm .hand.is-drag { opacity: 1; }

/* ---------- franja de abajo: notita de la página + puntitos ---------- */
.dock { position: absolute; z-index: 3; left: 0; right: 0; bottom: 0; height: var(--ui-bottom); padding: 0 12px calc(6px + env(safe-area-inset-bottom)); display: flex; flex-direction: column; justify-content: flex-end; gap: 6px; pointer-events: none; }
.dock > * { pointer-events: auto; }
.pager { display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; gap: 4px; opacity: 0; transition: opacity .4s ease; }
.pager.is-on { opacity: 1; }
.pg-btn { width: 44px; height: 44px; display: grid; place-items: center; border: 0; border-radius: 50%; cursor: pointer; color: var(--cream); background: rgba(26, 22, 64, .45); box-shadow: inset 0 0 0 1.5px rgba(255, 247, 236, .22); }
.pg-btn:disabled { opacity: .3; cursor: default; }
.pg-next svg { transform: scaleX(-1); }
.dots { display: flex; justify-content: center; align-items: center; gap: 2px; }
.dot { position: relative; width: 22px; height: 44px; border: 0; padding: 0; background: none; cursor: pointer; }
.dot::after { content: ""; position: absolute; left: 50%; top: 50%; width: 7px; height: 7px; margin: -3.5px 0 0 -3.5px; border-radius: 50%; background: rgba(255, 247, 236, .35); transition: transform .25s, background .25s; }
.dot[aria-current="page"]::after { background: var(--theme-gold); transform: scale(1.5); }
.note-slot { position: relative; min-height: 0; flex: 1; display: flex; align-items: flex-end; justify-content: center; }

/* notita de papel (pegada con cinta) */
.note { position: relative; max-width: 100%; width: 100%; padding: 12px 14px 12px; border-radius: 6px 6px 10px 10px; color: var(--ink); background: var(--paper);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .6) inset, 0 8px 18px rgba(0, 0, 0, .35); transform: rotate(var(--rot, -1deg)) translateY(12px); opacity: 0; transition: opacity .35s ease, transform .45s var(--ease-spring); }
.note.is-on { opacity: 1; transform: rotate(var(--rot, -1deg)); }
.note::before { content: ""; position: absolute; left: 50%; top: -9px; width: 74px; height: 20px; margin-left: -37px; background: rgba(255, 240, 200, .8); box-shadow: 0 1px 2px rgba(0, 0, 0, .15); transform: rotate(-3deg); } /* cinta */
.note.is-yellow { background: #FFF2B8; }
.note.is-tag { border-radius: 12px; background: #FFFDF6; }
.note.is-tag::before { display: none; }
.note.is-tag::after { content: ""; position: absolute; left: 12px; top: 12px; width: 10px; height: 10px; border-radius: 50%; background: var(--night); box-shadow: 0 0 0 3px #F2C94C; }
.note h3 { margin: 0 0 4px; font: 600 18px/1.2 var(--font-head); color: var(--ink); }
.note.is-tag h3 { padding-left: 20px; }
.note p { margin: 0; font-size: 16px; line-height: 1.35; color: #463C7A; }
.note .hand-txt { font: 700 22px/1.1 var(--font-hand); color: var(--ink); }
.stickers { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
/* sticker: calcomanía con borde blanco grueso, un poco girada; se "despega" al presionar */
.sticker { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 0 14px; border: 3px solid #FFFFFF; border-radius: 14px; cursor: pointer; text-decoration: none;
  font: 600 16px/1 var(--font-head); color: var(--on-theme); background: var(--theme); box-shadow: 0 3px 0 var(--theme-lo), 0 6px 12px rgba(46, 42, 90, .25); transform: rotate(var(--r, -1.5deg)); transition: transform .12s ease; }
.sticker:nth-child(2n) { --r: 1.5deg; }
.sticker.is-soft { color: var(--ink); background: #FFFFFF; border-color: #FFFFFF; box-shadow: 0 0 0 1.5px #E7DCC6, 0 3px 0 #D9C7A5, 0 6px 12px rgba(46, 42, 90, .2); }
.sticker.is-gold { color: var(--ink); background: #F2C94C; box-shadow: 0 3px 0 #B8841E, 0 6px 12px rgba(46, 42, 90, .25); }
.sticker:active { transform: rotate(0) translateY(2px) scale(.98); }
.sticker:focus-visible { outline: 3px solid var(--theme-gold); outline-offset: 3px; }
.sticker svg { flex: none; }
.note .big-cta { width: 100%; min-height: 52px; font-size: 19px; }
.note.is-mini { padding: 8px 12px; text-align: center; }
.note.is-mini::before { display: none; }

/* ---------- final ---------- */
.final { position: absolute; z-index: 5; left: 12px; right: 12px; bottom: calc(14px + env(safe-area-inset-bottom)); display: grid; gap: 10px; justify-items: center; opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s var(--ease-soft); pointer-events: none; }
.final.is-on { opacity: 1; transform: none; pointer-events: auto; }
.final h2 { margin: 0 0 2px; font: 600 24px/1.2 var(--font-head); color: var(--cream); text-align: center; text-shadow: 0 2px 10px rgba(0, 0, 0, .5); }
.final .row { display: flex; gap: 8px; width: 100%; }
.final .row > * { flex: 1; }
.fbtn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 14px; border: 0; border-radius: 999px; cursor: pointer; font: 600 17px/1.1 var(--font-head); color: var(--ink); background: var(--paper); box-shadow: 0 3px 0 #D9C7A5, 0 8px 18px rgba(0, 0, 0, .3); }
.fbtn.is-primary { width: 100%; min-height: 54px; font-size: 19px; color: var(--on-theme); background: linear-gradient(180deg, var(--theme-hi), var(--theme)); box-shadow: 0 4px 0 var(--theme-lo), 0 8px 18px rgba(0, 0, 0, .3); }
.fbtn:focus-visible { outline: 3px solid var(--theme-gold); outline-offset: 3px; }

/* narración ("Léeme el cuento"): sólo si hay audios */
.read-btn { position: absolute; z-index: 5; top: calc(10px + env(safe-area-inset-top)); left: 10px; min-height: 44px; padding: 0 14px; border: 0; border-radius: 999px; cursor: pointer; font: 600 16px/1 var(--font-head); color: var(--ink); background: var(--paper); box-shadow: 0 3px 0 #D9C7A5; }

/* etiqueta de ayuda sobre la escena (estrellas, fotos) */
.hint { position: absolute; z-index: 3; left: 50%; transform: translateX(-50%); padding: 6px 12px; border-radius: 999px; background: rgba(26, 22, 64, .7); font: 600 16px/1.2 var(--font-head); color: var(--cream); white-space: nowrap; opacity: 0; transition: opacity .4s; pointer-events: none; }
.hint.is-on { opacity: 1; }