/* Story shelf and the read-along reader. */

.k-shelf { display: grid; gap: 26px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
.k-book {
    display: flex; flex-direction: column; text-decoration: none; color: var(--ink);
    border-radius: 26px; background: var(--paper); overflow: hidden;
    box-shadow: 0 8px 0 color-mix(in srgb, var(--t) 35%, var(--paper)), var(--shadow);
    transition: transform .3s var(--ease-bounce), box-shadow .3s;
}
.k-book[hidden] { display: none; }
.k-book:hover { transform: translateY(-8px) rotate(-.6deg); box-shadow: 0 12px 0 color-mix(in srgb, var(--t) 35%, var(--paper)), var(--shadow-l); }
.k-book-cover { position: relative; aspect-ratio: 3 / 2; overflow: hidden; background: var(--ts); }
.k-book-cover::before {
    content: ""; position: absolute; inset-block: 0; inset-inline-start: 0; width: 14px; z-index: 1;
    background: linear-gradient(90deg, rgba(0, 0, 0, .22), rgba(255, 255, 255, .25) 55%, transparent);
}
.k-book-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s ease; }
.k-book:hover .k-book-cover img { transform: scale(1.06); }
.k-book-age { position: absolute; inset-inline-end: 12px; top: 12px; padding: 4px 12px; border-radius: 999px; background: rgba(255, 255, 255, .92); color: #2B2350; font-size: .8rem; font-weight: 800; }
.k-book-body { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px 18px; }
.k-book-body strong { font-size: 1.25rem; line-height: 1.2; }
.k-book-body > span { color: var(--ink-soft); font-family: var(--font-read); font-size: .95rem; }
.k-book-meta { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 6px; font-size: .85rem !important; font-weight: 700; }

/* ---------- Reader ---------- */
:where(.k-reader) { --t: var(--grape); --td: var(--grape-deep); --ts: var(--grape-soft); }
.k-reader { max-width: 1180px; margin: 0 auto; }
.k-reader-top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin-bottom: 14px; }
.k-reader-top .k-crumb { margin: 0; }
.k-reader-title { font-size: clamp(1.4rem, 3vw, 2.1rem); font-weight: 800; margin: 0; flex: 1 1 260px; }

.k-stage { position: relative; perspective: 2200px; }
.k-spread {
    display: grid; grid-template-columns: 1.25fr 1fr;
    min-height: min(68vh, 600px);
    border-radius: 34px; overflow: hidden;
    background: var(--paper);
    box-shadow: 0 10px 0 color-mix(in srgb, var(--t) 35%, var(--paper)), var(--shadow-l);
    transform-origin: 0 50%;
}
[dir="rtl"] .k-spread { transform-origin: 100% 50%; }
.k-spread[hidden] { display: none; }
.k-spread.is-turn-in { animation: page-in .55s cubic-bezier(.2, .7, .3, 1) both; }
.k-spread.is-turn-back { animation: page-back .55s cubic-bezier(.2, .7, .3, 1) both; }
@keyframes page-in { 0% { transform: rotateY(-28deg) translateX(40px); opacity: 0; filter: brightness(.85); } 100% { transform: none; opacity: 1; filter: none; } }
@keyframes page-back { 0% { transform: rotateY(28deg) translateX(-40px); opacity: 0; filter: brightness(.85); } 100% { transform: none; opacity: 1; filter: none; } }

.k-spread-art { margin: 0; position: relative; background: var(--ts); }
.k-spread-art img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.k-spread-art::after {
    content: ""; position: absolute; inset-block: 0; inset-inline-end: 0; width: 34px;
    background: linear-gradient(270deg, rgba(43, 35, 80, .18), transparent);
}
[dir="rtl"] .k-spread-art::after { background: linear-gradient(90deg, rgba(43, 35, 80, .18), transparent); }

.k-spread-text {
    position: relative; display: flex; flex-direction: column; justify-content: center; gap: 22px;
    padding: clamp(24px, 4vw, 52px);
    background: #FFFCF4; color: #2B2350;
}
.k-spread-text.bg-ocean, .k-spread-text.bg-sky { background: linear-gradient(160deg, #F2FAFF, #DDF1FD); }
.k-spread-text.bg-sunrise, .k-spread-text.bg-desert { background: linear-gradient(160deg, #FFF8E8, #FFEBC7); }
.k-spread-text.bg-garden, .k-spread-text.bg-meadow { background: linear-gradient(160deg, #F4FCEF, #E1F5D6); }
.k-spread-text.bg-night { background: linear-gradient(160deg, #2E2870, #1F1B4D); color: #F4F1FF; }
.k-spread-text.bg-rose { background: linear-gradient(160deg, #FFF3F6, #FFDCE6); }

.k-story { font-family: "Andika", var(--font-read); font-size: clamp(1.3rem, 2.3vw, 1.75rem); line-height: 1.65; margin: 0; letter-spacing: .01em; }
.k-story .w { border-radius: 8px; padding: 0 2px; transition: background .15s, color .15s; }
.k-story .w.is-now { background: var(--sun); color: #2B2350; box-shadow: 0 0 0 3px var(--sun); }
.k-story .w.is-read { color: inherit; opacity: .78; }

.k-verse {
    margin: 0; padding: 16px 18px; border-radius: 20px;
    background: rgba(255, 255, 255, .7); border: 2px solid rgba(124, 92, 255, .2);
    color: #2B2350;
}
.bg-night .k-verse { background: rgba(255, 255, 255, .1); color: #F4F1FF; border-color: rgba(255, 255, 255, .2); }
.k-verse figcaption { font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; opacity: .7; margin-bottom: 6px; font-family: var(--font-display); }
.k-verse-ar { margin: 0 0 8px; font-family: var(--font-quran); font-size: 1.6rem; line-height: 2; text-align: right; }
.k-verse-tr { margin: 0 0 6px; font-family: var(--font-read); font-style: italic; font-size: 1rem; }
.k-verse cite { font-style: normal; font-size: .82rem; opacity: .75; font-family: var(--font-display); }
.k-page-no { position: absolute; bottom: 16px; inset-inline-end: 22px; font-weight: 800; opacity: .45; }

.k-spread-end { grid-template-columns: 1fr; background: radial-gradient(120% 90% at 50% 0%, color-mix(in srgb, var(--t) 22%, var(--paper)), var(--paper)); }
.k-end { display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; padding: 34px 24px; }
.k-end .k-mascot-svg { width: 120px; height: 150px; }
.k-end h2 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; margin: 0; }
.k-end-stars { display: flex; gap: 10px; }
.k-end-stars i {
    width: 56px; height: 56px; display: block;
    background: linear-gradient(180deg, #FFE27A, #FFB400);
    clip-path: polygon(50% 0, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    animation: star-pop .6s var(--ease-bounce) both;
}
.k-end-stars i:nth-child(2) { animation-delay: .2s; width: 70px; height: 70px; margin-top: -10px; }
.k-end-stars i:nth-child(3) { animation-delay: .4s; }
@keyframes star-pop { 0% { transform: scale(0) rotate(-40deg); } 100% { transform: scale(1) rotate(0); } }
.k-moral { max-width: 560px; padding: 16px 22px; border-radius: 22px; background: var(--paper); box-shadow: var(--shadow-s); }
.k-moral strong { display: block; color: var(--ink-soft); font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; }
.k-moral p { margin: 6px 0 0; font-family: var(--font-read); font-size: 1.2rem; }
.k-end-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 6px; }
.k-more { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 10px; }
.k-more-book { width: 170px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: .9rem; }
.k-more-book img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 14px; display: block; margin-bottom: 4px; box-shadow: var(--shadow-s); }

.k-controls { display: flex; justify-content: center; align-items: center; gap: 14px; margin: 22px 0 8px; }
.k-ctl {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    min-width: 64px; height: 64px; padding: 0 18px; border: 0; border-radius: 999px; cursor: pointer;
    background: var(--paper); color: var(--ink); font-weight: 800; font-size: 1.1rem;
    box-shadow: 0 5px 0 color-mix(in srgb, var(--t) 40%, var(--paper)), var(--shadow-s);
    transition: transform .15s;
}
.k-ctl > span[aria-hidden] { font-size: 2.4rem; line-height: 1; margin-top: -6px; }
.k-ctl:active { transform: translateY(4px); box-shadow: 0 1px 0 color-mix(in srgb, var(--t) 40%, var(--paper)); }
.k-ctl[disabled] { opacity: .4; cursor: default; }
.k-ctl-play { background: var(--t); color: #2B2350; min-width: 190px; box-shadow: 0 5px 0 var(--td), var(--shadow); }
/* Dark text on the light story colours, white on the deep purple one: both pass WCAG AA. */
.c-night .k-ctl-play, .c-grape .k-ctl-play { background: var(--grape-deep); color: #fff; }
.k-ctl-play svg { width: 28px; height: 28px; }
.k-ctl-play .i-pause, .k-ctl-play[aria-pressed="true"] .i-play { display: none; }
.k-ctl-play[aria-pressed="true"] .i-pause { display: block; }
.k-dots { display: flex; justify-content: center; gap: 6px; flex-wrap: wrap; }
.k-dots i { width: 10px; height: 10px; border-radius: 50%; background: color-mix(in srgb, var(--ink) 18%, transparent); transition: all .3s; }
.k-dots i.is-on { width: 28px; border-radius: 6px; background: var(--t); }
.k-page-label { text-align: center; color: var(--ink-soft); font-weight: 700; margin: 8px 0 0; }

.k-grownups { margin: 30px auto 0; max-width: 760px; padding: 14px 20px; border-radius: 18px; background: var(--paper); box-shadow: var(--shadow-s); font-family: var(--font-read); color: var(--ink-soft); }
.k-grownups summary { cursor: pointer; font-weight: 800; color: var(--ink); font-family: var(--font-display); }

@media (max-width: 860px) {
    .k-spread { grid-template-columns: 1fr; min-height: 0; }
    .k-spread-art { aspect-ratio: 3 / 2; }
    .k-spread-art::after { display: none; }
    .k-spread-text { padding: 22px 22px 40px; }
    .k-ctl-play { min-width: 64px; }
    .k-ctl-play [data-play-label] { display: none; }
    .k-ctl { height: 58px; min-width: 58px; }
    .page-reader .k-tabbar { display: none; }
    .k-controls {
        position: sticky; bottom: 10px; z-index: 30;
        padding: 10px; margin-inline: -6px; border-radius: 999px;
        background: color-mix(in srgb, var(--paper) 88%, transparent);
        backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
        box-shadow: var(--shadow);
    }
}