/* ===== Wide-screen side rails (js/rails.js) =====
   Fixed beside the 720px main column, below the header. The right rail keeps
   clear of the fixed buttons on the right edge (AI chat, settings, reload,
   clock), so it needs a wider screen than the left one. The alphabet,
   dictionary and quiz pages widen to 1180px (the quiz page only while its path
   shows: body.quiz-wide, set in js/rails.js), so their rails wait for even
   wider screens. --rail-top is set by railPlace() (js/rails.js) from the
   header's real height, which changes with the language (English wraps the
   tagline onto three lines). */
.side-rail { display: none; }

@media (min-width: 1280px) {
    /* the big 小花火 beside the page replaces the small one in the home greeting */
    .home-mascot { display: none; }
    .rail-left {
        display: block;
        position: fixed;
        top: var(--rail-top);
        left: calc(50% - 360px - 28px - var(--rail-left-w));
        width: var(--rail-left-w);
        padding-top: 92px;
        z-index: 5;
    }
}
@media (min-width: 1480px) {
    .rail-right {
        display: flex;
        flex-direction: column;
        gap: 14px;
        position: fixed;
        top: var(--rail-top);
        right: max(112px, calc(50% - 360px - 28px - var(--rail-right-w)));
        width: var(--rail-right-w);
        max-height: calc(100vh - var(--rail-top) - 120px);
        overflow-y: auto;
        padding: 2px 2px 6px;
        z-index: 5;
    }
}
:root {
    --rail-left-w: 180px;
    --rail-right-w: 232px;
    --rail-top: 150px;
}
/* with room on her left, the bubble goes there and she needs no space above */
.rail-left.bubble-side { padding-top: 0; }

/* the pages that are 1180px wide on desktop */
@media (min-width: 1280px) and (max-width: 1699.98px) {
    body[data-page="home"] .rail-left,
    body[data-page="alphabet"] .rail-left,
    body[data-page="dict"] .rail-left,
    body[data-page="notes"] .rail-left,
    body[data-page="about"] .rail-left,
    body[data-page="friends"] .rail-left,
    body[data-page="quiz"].quiz-wide .rail-left,
    body[data-page="grammar"].grammar-wide .rail-left,
    body[data-page="reading"].reading-wide .rail-left,
    body[data-page="listening"].listening-wide .rail-left { display: none; }
    /* home is 1180px too: with no 小花火 beside it, the greeting keeps its small one */
    body[data-page="home"] .home-mascot { display: block; }
}
@media (min-width: 1700px) {
    body[data-page="home"] .rail-left,
    body[data-page="alphabet"] .rail-left,
    body[data-page="dict"] .rail-left,
    body[data-page="notes"] .rail-left,
    body[data-page="about"] .rail-left,
    body[data-page="friends"] .rail-left,
    body[data-page="quiz"].quiz-wide .rail-left,
    body[data-page="grammar"].grammar-wide .rail-left,
    body[data-page="reading"].reading-wide .rail-left,
    body[data-page="listening"].listening-wide .rail-left { left: calc(50% - 590px - 28px - var(--rail-left-w)); }
}
@media (min-width: 1480px) and (max-width: 1939.98px) {
    body[data-page="home"] .rail-right,
    body[data-page="alphabet"] .rail-right,
    body[data-page="dict"] .rail-right,
    body[data-page="notes"] .rail-right,
    body[data-page="about"] .rail-right,
    body[data-page="friends"] .rail-right,
    body[data-page="quiz"].quiz-wide .rail-right,
    body[data-page="grammar"].grammar-wide .rail-right,
    body[data-page="reading"].reading-wide .rail-right,
    body[data-page="listening"].listening-wide .rail-right { display: none; }
}
@media (min-width: 1940px) {
    body[data-page="home"] .rail-right,
    body[data-page="alphabet"] .rail-right,
    body[data-page="dict"] .rail-right,
    body[data-page="notes"] .rail-right,
    body[data-page="about"] .rail-right,
    body[data-page="friends"] .rail-right,
    body[data-page="quiz"].quiz-wide .rail-right,
    body[data-page="grammar"].grammar-wide .rail-right,
    body[data-page="reading"].reading-wide .rail-right,
    body[data-page="listening"].listening-wide .rail-right { right: max(112px, calc(50% - 590px - 28px - var(--rail-right-w))); }
}

/* ----- left: 小花火 ----- */
.poke-btn {
    position: relative;
    display: block;
    width: min(100%, calc((100vh - var(--rail-top) - 92px - 40px) * 244 / 491));
    margin: 0 auto;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.bubble-side .poke-btn { width: min(100%, calc((100vh - var(--rail-top) - 40px) * 244 / 491)); }
.poke-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 6px;
    border-radius: 16px;
}
/* a soft shadow to stand on */
.poke-btn::after {
    content: '';
    position: absolute;
    left: 18%;
    right: 18%;
    bottom: -6px;
    height: 12px;
    border-radius: 50%;
    background: var(--ink);
    opacity: 0.12;
    z-index: -1;
}
.poke-bubble {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: max-content;
    max-width: calc(var(--rail-left-w) + 40px);
    padding: 9px 13px;
    border-radius: 14px;
    border: 2px solid var(--line);
    background: var(--surface);
    color: var(--text);
    font-size: 0.85rem;
    line-height: 1.5;
    text-align: center;
    box-shadow: 0 3px 0 var(--edge);
}
.poke-bubble::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -9px;
    width: 14px;
    height: 14px;
    margin-left: -7px;
    background: var(--surface);
    border-right: 2px solid var(--line);
    border-bottom: 2px solid var(--line);
    transform: rotate(45deg);
}
.poke-bubble.show { animation: poke-bubble-in 0.22s cubic-bezier(0.3, 1.5, 0.5, 1); }
@keyframes poke-bubble-in {
    from { opacity: 0; transform: translateX(-50%) translateY(6px) scale(0.92); }
    to { opacity: 1; transform: translateX(-50%); }
}
/* beside her, at head height, pointing right */
.bubble-side .poke-bubble {
    top: 9%;
    left: auto;
    right: calc(100% + 14px);
    transform: none;
    max-width: 220px;
    text-align: left;
}
.bubble-side .poke-bubble::after {
    left: auto;
    right: -9px;
    top: 14px;
    bottom: auto;
    margin-left: 0;
    border-bottom: 0;
    border-top: 2px solid var(--line);
}
.bubble-side .poke-bubble.show { animation-name: poke-bubble-side-in; }
@keyframes poke-bubble-side-in {
    from { opacity: 0; transform: translateX(8px) scale(0.92); }
    to { opacity: 1; transform: none; }
}

/* ♪ 💕 /// ! 💢 floating up beside her head */
.poke-fx {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.poke-fx-item {
    position: absolute;
    top: 8%;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    animation: poke-float 0.9s ease-out both;
}
.poke-fx-item.shy { top: 30%; left: 66% !important; font-size: 1rem; color: var(--danger); }
.poke-fx-item.startle { top: 4%; font-size: 1.6rem; }
.poke-fx-item.cross { top: 6%; }
@keyframes poke-float {
    from { opacity: 0; transform: translateY(8px) scale(0.7); }
    25% { opacity: 1; transform: translateY(0) scale(1.05); }
    to { opacity: 0; transform: translateY(-26px) scale(1); }
}

/* ----- right: cards ----- */
.rail-card {
    padding: 14px 14px 12px;
    border-radius: var(--radius);
    border: 2px solid var(--line);
    background: var(--surface);
    box-shadow: 0 4px 0 var(--edge);
}
.rail-home-only { display: none; }
body.rail-home .rail-home-only { display: block; }
/* a laptop-height screen: the calendar gives way so the rail needs no scrollbar */
@media (max-height: 819.98px) {
    body.rail-home #rail-cal { display: none; }
}
.rail-head {
    display: flex;
    flex-wrap: wrap;   /* a long title (Последние две недели) puts the count under it */
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}
.rail-title {
    margin: 0;
    font-family: var(--font-serif);
    font-size: 0.95rem;
    color: var(--text);
}
.rail-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.rail-word {
    font-family: var(--font-serif);
    font-size: 1.7rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text);
    overflow-wrap: anywhere;
}
.rail-reading {
    margin-top: 2px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.rail-meaning {
    margin-top: 6px;
    font-size: 0.92rem;
    color: var(--text);
}
.rail-word-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 10px;
}
.rail-topic {
    font-size: 0.8rem;
    text-align: right;
}
.rail-note {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* two weeks, 7 a row */
.rail-cal {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}
.rail-day {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    border-radius: 6px;
    background: var(--track);
    color: var(--text-secondary);
    font-size: 0.7rem;
}
.rail-day.some { background: var(--primary-soft); color: var(--text); }
.rail-day.full { background: var(--primary); color: var(--on-primary); font-weight: 700; }
.rail-day.today { outline: 2px solid var(--primary); outline-offset: 1px; }

@media (prefers-reduced-motion: reduce) {
    .poke-bubble.show, .poke-fx-item { animation: none; }
    .poke-fx-item { display: none; }
}