/* Ertaklar Olami — 3D picture book (see js/book.js for the page model). */

:root {
    --paper: #fffcf4;
    --paper-2: #fbf3e2;
    --ink: #3b2a1a;
    --ink-soft: #6b5640;
    --gold: #d4a017;
    --gold-soft: #f3d98b;
}

body {
    font-family: 'Nunito', 'Gowun Dodum', sans-serif;
    background-color: #fff9ed;
    overflow-x: hidden;
    /* Korean wraps between words (no effect on Uzbek) */
    word-break: keep-all;
    overflow-wrap: break-word;
}

h1, h2, h3, h4, .font-heading {
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
}

/* ---------- stage & book ---------- */

.book-stage {
    display: flex;
    justify-content: center;
    padding: 26px 22px 20px;
}

.book {
    --board: 12px;
    --stack-l: 0px;
    --stack-r: 9px;
    --closed: 0;
    --cover: #7c2d12;
    position: relative;
    width: min(100%, 1000px);
    height: clamp(520px, calc(100vh - 230px), 660px);
    perspective: 2400px;
    perspective-origin: 50% 40%;
    transform: translateX(calc(var(--closed) * -25%));
    user-select: none;
    -webkit-user-select: none;
    touch-action: pan-y;
    -webkit-tap-highlight-color: transparent;
}

.book-board {
    position: absolute;
    top: calc(-1 * var(--board));
    bottom: calc(-1 * var(--board));
    width: calc(50% + var(--board));
    background:
        radial-gradient(circle at 30% 20%, rgba(255, 255, 255, .12), transparent 55%),
        repeating-linear-gradient(45deg, rgba(0, 0, 0, .05) 0 2px, transparent 2px 5px),
        var(--cover);
    box-shadow: 0 22px 44px -12px rgba(60, 30, 10, .45), 0 6px 14px rgba(60, 30, 10, .2);
}

.book-board--left {
    left: calc(-1 * var(--board));
    border-radius: 16px 4px 4px 16px;
}

.book-board--right {
    right: calc(-1 * var(--board));
    border-radius: 4px 16px 16px 4px;
}

.page-stack {
    position: absolute;
    top: 3px;
    bottom: 3px;
    z-index: 1;
    background: repeating-linear-gradient(to right, #fbf4e4 0 1px, #d8c49c 1px 2px);
}

.page-stack--left {
    left: calc(-1 * var(--stack-l));
    width: var(--stack-l);
    border-radius: 3px 0 0 3px;
}

.page-stack--right {
    right: calc(-1 * var(--stack-r));
    width: var(--stack-r);
    border-radius: 0 3px 3px 0;
}

.book-page {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 50%;
    z-index: 2;
    overflow: hidden;
    background: var(--paper);
}

.book-page--left {
    left: 0;
    border-radius: 6px 0 0 6px;
}

.book-page--right {
    right: 0;
    border-radius: 0 6px 6px 0;
}

.page-content,
.face-content {
    position: absolute;
    inset: 0;
}

/* Shadow cast by the turning sheet onto the page beneath it. */
.page-shade {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
    z-index: 5;
}

.book-page--left .page-shade {
    background: linear-gradient(to left, rgba(40, 20, 5, .55), rgba(40, 20, 5, .12) 45%, rgba(40, 20, 5, 0) 80%);
}

.book-page--right .page-shade {
    background: linear-gradient(to right, rgba(40, 20, 5, .55), rgba(40, 20, 5, .12) 45%, rgba(40, 20, 5, 0) 80%);
}

.book-spine {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    transform: translateX(-50%);
    z-index: 4;
    pointer-events: none;
    background: linear-gradient(to right, rgba(60, 35, 10, .35), rgba(255, 255, 255, .5), rgba(60, 35, 10, .35));
}

.bookmark-ribbon {
    position: absolute;
    top: calc(-1 * var(--board) - 4px);
    left: calc(50% + 10px);
    width: 18px;
    height: 64px;
    z-index: 9;
    pointer-events: none;
    background: linear-gradient(135deg, #ef4444, #b91c1c);
    box-shadow: 0 4px 10px rgba(0, 0, 0, .3);
    clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 84%, 0 100%);
}

/* ---------- the turning sheet ---------- */

.leaf {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 50%;
    z-index: 10;
    pointer-events: none;
    transform-style: preserve-3d;
    will-change: transform;
}

.leaf[hidden] {
    display: none;
}

.leaf--fwd {
    left: 50%;
    transform-origin: 0 50%;
}

.leaf--bwd {
    left: 0;
    transform-origin: 100% 50%;
}

/* The front board is a little larger than the paper it protects. */
.leaf--cover {
    top: calc(-1 * var(--board));
    bottom: calc(-1 * var(--board));
    width: calc(50% + var(--board));
}

.leaf--cover.leaf--bwd {
    left: calc(-1 * var(--board));
}

.leaf-face {
    position: absolute;
    inset: 0;
    overflow: hidden;
    background: var(--paper);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.leaf-face--back {
    transform: rotateY(180deg);
}

.leaf--fwd .leaf-face--front,
.leaf--bwd .leaf-face--back {
    border-radius: 0 6px 6px 0;
}

.leaf--fwd .leaf-face--back,
.leaf--bwd .leaf-face--front {
    border-radius: 6px 0 0 6px;
}

.leaf--cover .leaf-face {
    border-radius: 4px 16px 16px 4px;
    background: var(--cover);
}

.leaf--cover.leaf--fwd .leaf-face--back,
.leaf--cover.leaf--bwd .leaf-face--front {
    border-radius: 16px 4px 4px 16px;
}

.face-shade {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
    z-index: 6;
}

/* Darkest along the spine, where the paper bends. */
.leaf--fwd .leaf-face--front .face-shade,
.leaf--bwd .leaf-face--back .face-shade {
    background: linear-gradient(to right, rgba(30, 15, 5, .6), rgba(30, 15, 5, .18) 40%, rgba(255, 255, 255, .06));
}

.leaf--fwd .leaf-face--back .face-shade,
.leaf--bwd .leaf-face--front .face-shade {
    background: linear-gradient(to left, rgba(30, 15, 5, .6), rgba(30, 15, 5, .18) 40%, rgba(255, 255, 255, .06));
}

.leaf.is-resting .leaf-face--front {
    box-shadow: 0 22px 44px -12px rgba(60, 30, 10, .5);
}

/* ---------- closed book ---------- */

.book.is-closed .book-board--left,
.book.is-closed .book-page--left,
.book.is-closed .page-stack--left,
.book.is-closed .book-spine,
.book.is-closed .bookmark-ribbon,
.book.is-closed .page-corner {
    visibility: hidden;
}

.book.is-closed .leaf.is-resting {
    pointer-events: none;
    cursor: pointer;
}

.book.is-closed {
    cursor: pointer;
}

/* ---------- page corners (tap to turn) ---------- */

.page-corner {
    position: absolute;
    bottom: 0;
    width: 64px;
    height: 64px;
    z-index: 12;
    border: 0;
    padding: 0;
    cursor: pointer;
    background: transparent;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s;
}

.book.can-next .page-corner--next,
.book.can-prev .page-corner--prev {
    opacity: 1;
    pointer-events: auto;
}

.book.is-turning .page-corner {
    opacity: 0;
    pointer-events: none;
}

.page-corner::before {
    content: '';
    position: absolute;
    bottom: 0;
    width: 30px;
    height: 30px;
    transition: width .2s, height .2s;
    filter: drop-shadow(-2px -2px 3px rgba(0, 0, 0, .18));
}

.page-corner--next {
    right: 0;
}

.page-corner--next::before {
    right: 0;
    background: linear-gradient(135deg, #f7e7c1 0%, #fff8e7 48%, transparent 50%);
    border-top-left-radius: 6px;
}

.page-corner--prev {
    left: 0;
}

.page-corner--prev::before {
    left: 0;
    background: linear-gradient(225deg, #f7e7c1 0%, #fff8e7 48%, transparent 50%);
    border-top-right-radius: 6px;
}

.page-corner:hover::before,
.page-corner:focus-visible::before {
    width: 46px;
    height: 46px;
}

.page-corner:focus-visible {
    outline: 3px solid #f59e0b;
    outline-offset: -3px;
    border-radius: 10px;
}

/* ---------- sheets (shared by static pages and the turning sheet) ---------- */

.sheet {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 10%, rgba(255, 255, 255, .7), transparent 60%),
        linear-gradient(180deg, var(--paper), var(--paper-2));
    color: var(--ink);
}

.sheet::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 44px;
    pointer-events: none;
}

.sheet--left::after {
    right: 0;
    background: linear-gradient(to left, rgba(90, 60, 20, .22), rgba(90, 60, 20, 0));
}

.sheet--right::after {
    left: 0;
    background: linear-gradient(to right, rgba(90, 60, 20, .22), rgba(90, 60, 20, 0));
}

.page-pad {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 22px 30px 18px;
}

.sheet--left .page-pad {
    padding-right: 34px;
}

.sheet--right .page-pad {
    padding-left: 34px;
}

.page-head,
.page-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 0 0 auto;
    font-size: 12px;
    font-weight: 700;
    color: #a8895d;
}

.page-head {
    border-bottom: 1px dashed #e7d3a8;
    padding-bottom: 7px;
}

.page-foot {
    margin-top: auto;
    border-top: 1px dashed #e7d3a8;
    padding-top: 7px;
}

/* keep page numbers clear of the corner curls */
.sheet--right .page-foot {
    padding-right: 30px;
}

.sheet--left .page-foot {
    padding-left: 30px;
}

.page-flourish {
    flex: 0 0 auto;
    margin: 2px 0 0;
    text-align: center;
    font-size: calc(var(--fs) * 1.1);
    color: #e2b85a;
    letter-spacing: .6em;
}

.running-head {
    font-style: italic;
    letter-spacing: .02em;
}

.chapter-chip {
    background: #fdf0cf;
    color: #9a5b12;
    border-radius: 999px;
    padding: 2px 10px;
}

.page-num {
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
    font-size: 14px;
    color: #b45309;
}

.turn-hint {
    color: #b45309;
}

/* illustration page */
.page-art {
    position: relative;
    margin: 0;
    flex: 0 1 auto;
    width: 100%;
    aspect-ratio: 400 / 384;
    max-height: 100%;
    min-height: 0;
    border-radius: 18px;
    overflow: hidden;
    border: 4px solid #fff;
    box-shadow: 0 0 0 2px #e9cf94, 0 10px 22px -10px rgba(90, 50, 10, .55);
    cursor: pointer;
    background: #f6e7c8;
}

.page-art .story-art-svg {
    position: absolute;
    inset: 0;
}

.art-hint {
    margin: 0;
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    color: #b08a52;
}

.word-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2px 10px;
    align-items: baseline;
    padding: 10px 14px;
    border-radius: 14px;
    background: linear-gradient(135deg, #eefbf3, #fff8e6);
    border: 2px dashed #9ad0ad;
}

.word-label {
    grid-column: 1 / -1;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #2d7a4f;
}

.word-term {
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: #1f6f45;
}

.word-mean {
    font-size: 13.5px;
    color: var(--ink-soft);
    line-height: 1.35;
}

/* a proverb's Korean twin (js/stories-short.js) */
.proverb-card {
    grid-template-columns: 1fr;
    background: linear-gradient(135deg, #eff6ff, #fdf2f8);
    border-color: #a5b4fc;
}

.proverb-card .word-label {
    color: #4338ca;
    text-transform: none;
    letter-spacing: 0;
    font-size: 12px;
}

.proverb-ko {
    font-family: 'Gowun Dodum', sans-serif;
    font-size: 19px;
    font-weight: 700;
    color: #1e3a8a;
    line-height: 1.3;
}

/* a tongue twister's sounds to practise */
.twister-card {
    grid-template-columns: 1fr;
    justify-items: center;
    background: linear-gradient(135deg, #fff7ed, #fef9c3);
    border-color: #fbbf24;
}

.twister-card .word-label {
    color: #b45309;
    text-transform: none;
    letter-spacing: 0;
    font-size: 13px;
}

.twister-sounds {
    font-family: 'Fredoka', 'Nunito', sans-serif;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: .08em;
    color: #c2410c;
}

/* a lullaby: one line of verse to a line */
.page-text.is-verse {
    text-align: center;
    font-style: italic;
}

.page-text.is-verse .sent {
    display: block;
}

.page-text.is-verse::first-letter {
    all: unset;
}

/* a guessed riddle's answer */
.riddle-answer {
    margin: 4px 0 0;
    font-weight: 800;
    color: #7c2d12;
}

.riddle-answer b {
    font-family: 'Fredoka', 'Nunito', sans-serif;
    font-size: 1.25em;
    color: #15803d;
}

/* text page */
.page-body {
    --fs: 19px;
    flex: 1 1 auto;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: calc(var(--fs) * .6);
}

.page-title {
    margin: 0;
    font-size: calc(var(--fs) * 1.32);
    line-height: 1.2;
    font-weight: 700;
    color: #2b1d10;
}

.page-text {
    margin: 0;
    font-size: var(--fs);
    line-height: 1.62;
    color: var(--ink);
}

/* Korean helper (js/stories-ko.js): 🇰🇷 shows Korean under each piece of one page */
.head-tools {
    display: flex;
    align-items: center;
    gap: 6px;
}

.ko-toggle {
    min-width: 36px;
    height: 28px;
    padding: 0 7px;
    border-radius: 999px;
    border: 2px solid #f1d8a8;
    background: #fff;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    transition: background .15s, border-color .15s;
}

.ko-toggle.is-on {
    border-color: #cd2e3a;
    background: #fdecee;
}

/* 가: the page read out in Korean letters (js/hangul.js) */
.read-toggle {
    min-width: 36px;
    height: 28px;
    padding: 0 8px;
    border-radius: 999px;
    border: 2px solid #f1d8a8;
    background: #fff;
    color: #0f766e;
    font: 700 15px/1 system-ui, -apple-system, 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
    cursor: pointer;
    transition: background .15s, border-color .15s;
}

.read-toggle.is-on {
    border-color: #0f766e;
    background: #ccfbf1;
}

.read-toggle:focus-visible,
.ko-toggle:focus-visible {
    outline: 3px solid #f59e0b;
    outline-offset: 2px;
}

.ko-line {
    display: block;
    margin: 1px 0 10px;
    font-size: calc(var(--fs, 19px) * .82);
    line-height: 1.5;
    font-weight: 600;
    color: #5b6472;
}

.ko-line--title {
    margin: -4px 0 0;
    font-size: calc(var(--fs, 19px) * .95);
    font-weight: 700;
}

.page-text.is-ko .sent {
    display: block;
}

.page-text.is-ko::first-letter {
    float: none;
    margin: 0;
    padding: 0;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    font-weight: inherit;
    color: inherit;
    background: none;
    box-shadow: none;
}

/* Readings are made for any text, so they use the phone's own Korean font
   (the bundled one only has the letters of the app's fixed Korean). */
.read-line {
    display: block;
    margin: 1px 0 10px;
    font-family: system-ui, -apple-system, 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
    font-size: calc(var(--fs, 19px) * .8);
    line-height: 1.5;
    font-weight: 500;
    letter-spacing: .02em;
    color: #0f766e;
}

.read-line--title {
    margin: -4px 0 4px;
    font-size: calc(var(--fs, 19px) * .9);
}

.page-question .read-line {
    margin: 0 0 6px;
    font-size: 14px;
}

.choice .read-line {
    margin: 2px 0 0;
    font-size: .88em;
}

.word-read {
    font-family: system-ui, -apple-system, 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', sans-serif;
    font-size: .72em;
    font-weight: 600;
    color: #0f766e;
}

.choice .ko-line {
    margin: 2px 0 0;
    font-size: .9em;
    color: #6b7280;
}

.finale-moral .ko-toggle {
    margin: 0 6px 0 2px;
    vertical-align: 2px;
}

.finale-moral .ko-line {
    margin: 6px 0 0;
    font-size: 15px;
}

.word-ko {
    grid-column: 1 / -1;
    margin-top: 2px;
    font-size: 14px;
    font-weight: 700;
    color: #1f4d33;
}

/* glossary words: tap to see the Korean meaning */
.gloss {
    text-decoration: underline dotted #10b981;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
    border-radius: 4px;
    cursor: pointer;
}

.gloss:hover {
    background: #d1fae5;
}

/* read-along: the piece being read lights up like a highlighter pen */
.page-title,
.sent {
    border-radius: 8px;
    transition: background-color .25s, box-shadow .25s;
}

.book.has-voice [data-action="say"] {
    cursor: pointer;
}

.is-reading {
    background: #fde68a;
    box-shadow: 0 0 0 3px #fde68a;
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
}

/* A page that opens with a number ("9-oktabr") has no big first letter:
   it would split the number from its word. */
.page-text.no-cap::first-letter {
    all: unset;
}

.page-text::first-letter {
    float: left;
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
    font-size: calc(var(--fs) * 3.1);
    line-height: .9;
    font-weight: 700;
    margin: 4px 8px 0 0;
    padding: 4px 9px 5px;
    border-radius: 12px;
    color: #fff;
    background: linear-gradient(135deg, #f59e0b, #b45309);
    box-shadow: 0 3px 0 #92400e;
}

.page-question {
    margin-top: auto;
    padding: 12px 14px;
    border-radius: 16px;
    background: linear-gradient(135deg, #fff4dc, #fff9ee);
    border: 2px solid #f6d78f;
}

.question-label {
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #b45309;
}

.question-text {
    margin: 4px 0 8px;
    font-size: calc(var(--fs) * .84);
    font-weight: 700;
    line-height: 1.35;
}

.choices {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.choice {
    min-height: 40px;
    padding: 7px 14px;
    border-radius: 12px;
    border: 2px solid #f1c56b;
    background: #fff;
    color: #7c3f0b;
    font-size: calc(var(--fs) * .74);
    font-weight: 800;
    line-height: 1.25;
    text-align: left;
    cursor: pointer;
    transition: transform .15s, background .15s;
}

.choice:hover:not([disabled]) {
    background: #fff1cf;
    transform: translateY(-1px);
}

.choice:focus-visible {
    outline: 3px solid #f59e0b;
    outline-offset: 2px;
}

.choice[disabled] {
    cursor: default;
    opacity: .6;
}

.choice--right,
.choice--right[disabled] {
    opacity: 1;
    border-color: #34b36b;
    background: #e6f8ee;
    color: #1f6f45;
}

.choice--wrong {
    border-color: #f2a1a1;
    background: #fff0f0;
    color: #b23b3b;
    text-decoration: line-through;
}

.quiz-feedback {
    margin: 8px 0 0;
    font-size: 13px;
    font-weight: 800;
    color: #b45309;
}

.quiz-feedback--ok {
    color: #1f8a4c;
}

/* endpaper, title page, finale */
.sheet--endpaper .endpaper {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at 25% 25%, rgba(190, 70, 40, .22) 0 6px, transparent 7px),
        radial-gradient(circle at 75% 75%, rgba(190, 70, 40, .22) 0 6px, transparent 7px),
        radial-gradient(circle at 75% 25%, rgba(30, 110, 110, .18) 0 3px, transparent 4px),
        radial-gradient(circle at 25% 75%, rgba(30, 110, 110, .18) 0 3px, transparent 4px),
        repeating-linear-gradient(45deg, rgba(212, 160, 23, .12) 0 1px, transparent 1px 22px),
        repeating-linear-gradient(-45deg, rgba(212, 160, 23, .12) 0 1px, transparent 1px 22px),
        #f8ecd2;
    background-size: 44px 44px, 44px 44px, 44px 44px, 44px 44px, auto, auto, auto;
}

.exlibris {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    max-width: 72%;
    padding: 22px 26px;
    border-radius: 20px;
    background: #fffaf0;
    border: 3px double #c99a3b;
    text-align: center;
    box-shadow: 0 10px 24px -14px rgba(90, 50, 10, .6);
}

.exlibris-top,
.exlibris-bottom {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #a8762c;
}

.exlibris-title {
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
    font-size: 26px;
    font-weight: 700;
    color: #7c2d12;
    line-height: 1.15;
}

.title-page,
.finale {
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 10px;
}

.title-ornament {
    font-size: 26px;
    color: var(--gold);
}

.title-name {
    margin: 0;
    font-size: clamp(26px, 3.4vw, 36px);
    line-height: 1.1;
    color: #7c2d12;
}

.title-tag {
    margin: 0;
    font-size: 13px;
    font-weight: 800;
    color: #a8762c;
}

.title-medallion {
    position: relative;
    width: min(62%, 250px);
    aspect-ratio: 1;
    border-radius: 50%;
    overflow: hidden;
    border: 6px solid #fff;
    box-shadow: 0 0 0 3px #e2b85a, 0 14px 26px -12px rgba(90, 50, 10, .6);
    cursor: pointer;
}

.title-medallion .story-art-svg,
.cover-medallion .story-art-svg {
    position: absolute;
    inset: 0;
}

.title-meta {
    margin: 0;
    font-size: 13px;
    font-weight: 800;
    color: var(--ink-soft);
}

.title-opening {
    margin: 0;
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
    font-size: 18px;
    color: #9a3412;
}

.title-hint {
    margin: 0;
    font-size: 12px;
    font-weight: 700;
    color: #b08a52;
}

.page-art--end {
    flex: 1 1 auto;
}

.tamom-banner {
    position: absolute;
    left: 50%;
    top: 12px;
    transform: translateX(-50%) rotate(-3deg);
    padding: 6px 22px;
    border-radius: 999px;
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #f59e0b, #dc2626);
    box-shadow: 0 6px 0 #9a3412, 0 12px 20px -8px rgba(0, 0, 0, .4);
}

.finale-title {
    margin: 0;
    font-size: 32px;
    color: #7c2d12;
}

.finale-stars {
    font-size: 40px;
    letter-spacing: 6px;
    color: #f59e0b;
    text-shadow: 0 3px 0 #b45309;
}

.finale-stars span {
    color: #eadcc0;
    text-shadow: none;
}

.finale-score {
    margin: 0;
    font-weight: 800;
    color: var(--ink-soft);
}

.finale-moral {
    padding: 14px 16px;
    border-radius: 16px;
    background: #eefbf3;
    border: 2px dashed #9ad0ad;
    font-size: 16px;
    line-height: 1.5;
    color: #1f4d33;
}

.finale-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.btn-quiz,
.btn-reread {
    min-height: 48px;
    padding: 10px 20px;
    border-radius: 14px;
    border: 0;
    font-weight: 800;
    font-size: 15px;
    cursor: pointer;
}

.btn-quiz {
    color: #fff;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow: 0 4px 0 #92400e;
}

.btn-reread {
    color: #7c3f0b;
    background: #fff1cf;
    box-shadow: 0 4px 0 #e2b85a;
}

/* title page: pick up where this child stopped */
.btn-resume {
    min-height: 48px;
    padding: 10px 22px;
    border-radius: 14px;
    border: 0;
    font-weight: 800;
    font-size: 15px;
    color: #fff;
    background: linear-gradient(135deg, #10b981, #047857);
    box-shadow: 0 4px 0 #065f46;
    cursor: pointer;
}

.btn-quiz:focus-visible,
.btn-reread:focus-visible,
.btn-resume:focus-visible {
    outline: 3px solid #f59e0b;
    outline-offset: 3px;
}

/* ---------- covers ---------- */

.cover {
    position: absolute;
    inset: 0;
    padding: 20px;
    background:
        radial-gradient(circle at 30% 18%, rgba(255, 255, 255, .18), transparent 55%),
        repeating-linear-gradient(45deg, rgba(0, 0, 0, .06) 0 2px, transparent 2px 5px),
        var(--cover);
}

.cover::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 16px;
    background: linear-gradient(to right, rgba(0, 0, 0, .35), rgba(255, 255, 255, .12) 60%, transparent);
}

.cover-frame {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 20px;
    border-radius: 12px;
    border: 3px solid rgba(243, 217, 139, .85);
    box-shadow: inset 0 0 0 6px rgba(0, 0, 0, .12), inset 0 0 0 8px rgba(243, 217, 139, .5);
    text-align: center;
}

.cover-corner {
    position: absolute;
    width: 26px;
    height: 26px;
    border: 3px solid var(--gold-soft);
}

.cover-corner--tl { top: 10px; left: 10px; border-right: 0; border-bottom: 0; border-radius: 10px 0 0 0; }
.cover-corner--tr { top: 10px; right: 10px; border-left: 0; border-bottom: 0; border-radius: 0 10px 0 0; }
.cover-corner--bl { bottom: 10px; left: 10px; border-right: 0; border-top: 0; border-radius: 0 0 0 10px; }
.cover-corner--br { bottom: 10px; right: 10px; border-left: 0; border-top: 0; border-radius: 0 0 10px 0; }

.cover-series {
    margin: 0;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--gold-soft);
}

.cover-title {
    margin: 0;
    font-size: clamp(28px, 3.6vw, 40px);
    line-height: 1.08;
    color: #fff4d0;
    text-shadow: 0 3px 0 rgba(0, 0, 0, .3);
}

.cover-medallion {
    position: relative;
    width: min(70%, 270px);
    aspect-ratio: 1;
    border-radius: 50%;
    overflow: hidden;
    border: 6px solid var(--gold-soft);
    box-shadow: 0 0 0 4px rgba(0, 0, 0, .15), 0 16px 30px -12px rgba(0, 0, 0, .6);
}

.cover-tag {
    margin: 0;
    font-size: 13px;
    font-weight: 800;
    color: #fde8b0;
}

.cover-hint {
    margin: 0;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 800;
    color: #7c2d12;
    background: var(--gold-soft);
    animation: coverHint 2.4s ease-in-out infinite;
}

@keyframes coverHint {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.cover-inside {
    position: absolute;
    inset: 0;
    background: var(--cover);
}

.cover-inside-page {
    position: absolute;
    top: var(--board);
    bottom: var(--board);
    left: var(--board);
    right: 0;
    overflow: hidden;
}

/* ---------- library thumbnails ---------- */

.thumb-art {
    position: relative;
    overflow: hidden;
}

.thumb-art .story-art-svg {
    position: absolute;
    inset: 0;
}

/* ---------- phones: one column, slide instead of 3D turn ---------- */

@keyframes bookSlideForward {
    from { opacity: 0; transform: translateX(28px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes bookSlideBackward {
    from { opacity: 0; transform: translateX(-28px); }
    to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 767px) {
    .book-stage {
        padding: 6px 0 10px;
    }

    .book {
        height: auto;
        perspective: none;
        transform: none;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .book-board,
    .page-stack,
    .book-spine,
    .bookmark-ribbon,
    .leaf,
    .page-corner {
        display: none !important;
    }

    .book-page {
        position: relative;
        width: 100%;
        border-radius: 20px;
        box-shadow: 0 10px 24px -14px rgba(90, 50, 10, .55);
    }

    .book.is-title .book-page--left {
        display: none;
    }

    .page-content,
    .sheet,
    .page-pad {
        position: relative;
        inset: auto;
    }

    .sheet::after {
        display: none;
    }

    .page-pad,
    .sheet--left .page-pad,
    .sheet--right .page-pad {
        padding: 16px 18px;
    }

    .page-body {
        --fs: 18px;
        overflow: visible;
    }

    .page-art--end {
        aspect-ratio: 400 / 384;
    }

    .book-slide-forward { animation: bookSlideForward .28s ease-out; }
    .book-slide-backward { animation: bookSlideBackward .28s ease-out; }
}

@media (prefers-reduced-motion: reduce) {
    .book-slide-forward,
    .book-slide-backward,
    .cover-hint {
        animation: none;
    }
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #fff9ed; }
::-webkit-scrollbar-thumb { background: #f59e0b; border-radius: 9999px; }

/* ---------- bedtime (js/bedtime.js) ---------- */

/* the room goes dark and the book warm, as under a night lamp */
html[data-bedtime='on'] body {
    background:
        radial-gradient(1.5px 1.5px at 12% 18%, rgba(255, 255, 255, .55) 50%, transparent 52%),
        radial-gradient(1.5px 1.5px at 72% 9%, rgba(255, 255, 255, .45) 50%, transparent 52%),
        radial-gradient(2px 2px at 88% 32%, rgba(255, 255, 255, .5) 50%, transparent 52%),
        radial-gradient(1.5px 1.5px at 33% 6%, rgba(255, 255, 255, .4) 50%, transparent 52%),
        radial-gradient(1.5px 1.5px at 52% 26%, rgba(255, 255, 255, .35) 50%, transparent 52%),
        linear-gradient(#0b1026, #1e2a5a) fixed;
}

html[data-bedtime='on'] header,
html[data-bedtime='on'] #storyView > :first-child,
html[data-bedtime='on'] #storyView > :last-child {
    opacity: .62;
    filter: saturate(.6);
    transition: opacity .8s;
}

html[data-bedtime='on'] .book {
    filter: brightness(.86) sepia(.22) saturate(.85);
    transition: filter 1s;
}

html[data-bedtime='on'] #studioBtn,
html[data-bedtime='on'] #soundToggleBtn {
    display: none;
}

.bed-count {
    padding: 6px 12px;
    border-radius: 999px;
    background: #1e2a5a;
    color: #fde68a;
    font-size: 13px;
    font-weight: 800;
    white-space: nowrap;
}

/* Xayrli tun: good night, fading to dark */
.goodnight {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 24px 16px;
    overflow-y: auto;
    background: radial-gradient(circle at 50% 30%, #1e2a5a, #070b1d 72%);
    color: #e0e7ff;
    text-align: center;
}

.goodnight.hidden {
    display: none;
}

.goodnight > * {
    transition: opacity 6s ease;
}

.goodnight.is-faded > * {
    opacity: .05;
}

.goodnight-art {
    width: min(420px, 86vw);
    aspect-ratio: 400 / 320;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 0 60px rgba(255, 236, 160, .14);
}

.goodnight-art svg {
    display: block;
    width: 100%;
    height: 100%;
}

.goodnight-title {
    margin: 8px 0 0;
    font-family: 'Fredoka', 'Nunito', 'Gowun Dodum', sans-serif;
    font-size: clamp(26px, 6vw, 40px);
    color: #fde68a;
}

.goodnight-sub {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: #c7d2fe;
}

.goodnight-next {
    max-width: 32rem;
    margin: 0;
    font-size: 15px;
    color: #a5b4fc;
}

.goodnight-stamp:empty {
    display: none;
}

.goodnight-stamp .stamp-svg {
    width: 104px;
    height: 104px;
    margin: 0 auto 6px;
    padding: 4px;
    border-radius: 50%;
    background: #fdf6e3;
}

.goodnight-stamp p {
    margin: 0;
    font-weight: 800;
    color: #fde68a;
}

.goodnight-btn {
    min-height: 48px;
    margin-top: 8px;
    padding: 0 20px;
    border: 2px solid #4c5aa0;
    border-radius: 16px;
    background: #1e2a5a;
    color: #e0e7ff;
    font-weight: 800;
    cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
    .goodnight > * {
        transition: none;
    }
}