/* ==========================================================================
   DEVOSO 4.7 — reference pages: glossary and legal library.
   Sticky search / filter panel, alphabet index, term and act cards.
   Loaded only on page-glossary.php and page-library.php (inc/ref47.php).
   Author: Maks Odintsov
   ========================================================================== */

.r47 {
    --r47-k: var(--k, #121718);
    --r47-k2: var(--k-2, #1d2729);
    --r47-soft: var(--k-soft, #f4f6f5);
    --r47-t1: #4e6c6e;
    --r47-t2: #7fa3a4;
    --r47-t3: #b5cfcf;
    --r47-plum: #6b1d3d;
    --r47-line: #dfe5e4;
    --r47-muted: #5f6b6d;
    --r47-top: var(--head-h, 4.75rem);
    background: #fff;
    padding-top: 2.5rem;
}

/* ---------- Panel ---------- */
.r47-panel {
    position: sticky; top: calc(var(--r47-top) + .5rem); z-index: 30;
    display: grid; gap: .875rem;
    margin: 0 0 2.25rem; padding: 1.125rem 1.25rem;
    background: rgba(255,255,255,.94);
    -webkit-backdrop-filter: saturate(1.4) blur(.75rem); backdrop-filter: saturate(1.4) blur(.75rem);
    border: 1px solid var(--r47-line); border-radius: 1.25rem;
    box-shadow: 0 .25rem 1rem rgba(18,23,24,.04);
    transition: box-shadow .25s ease, padding .25s ease, border-color .25s ease;
}
.r47-panel.is-stuck { box-shadow: 0 .875rem 2.25rem rgba(18,23,24,.10); border-color: #d3dcdb; padding-top: .875rem; padding-bottom: .875rem; }

.r47-panel__top { display: flex; align-items: center; gap: 1rem; }
.r47-search {
    position: relative; flex: 1 1 auto; min-width: 0; max-width: 46rem;
    display: flex; align-items: center; gap: .65rem;
    height: 3.25rem; padding: 0 .5rem 0 1rem;
    background: var(--r47-soft); border: 1px solid transparent; border-radius: .875rem;
    transition: border-color .2s, box-shadow .2s, background .2s;
}
.r47-search:focus-within { background: #fff; border-color: var(--r47-t2); box-shadow: 0 0 0 .25rem rgba(127,163,164,.22); }
.r47-search > svg { flex: none; width: 1.15rem; height: 1.15rem; color: var(--r47-t1); }
.r47-search input {
    flex: 1 1 auto; min-width: 0; height: 100%;
    border: 0; outline: 0; background: none; box-shadow: none;
    font: inherit; font-size: 1rem; color: var(--r47-k);
    -webkit-appearance: none; appearance: none;
}
.r47-search input::placeholder { color: #869193; }
.r47-search input::-webkit-search-cancel-button, .r47-search input::-webkit-search-decoration { -webkit-appearance: none; appearance: none; display: none; }
.r47-kbd {
    flex: none; display: inline-grid; place-items: center; min-width: 1.6rem; height: 1.6rem; padding: 0 .35rem;
    font: 600 .78rem/1 var(--f-body, inherit); color: var(--r47-muted);
    background: #fff; border: 1px solid var(--r47-line); border-radius: .4rem;
}
.r47-search:focus-within .r47-kbd, .r47-search.has-q .r47-kbd { display: none; }
.r47-clear {
    flex: none; display: inline-grid; place-items: center; width: 2.25rem; height: 2.25rem;
    border: 0; border-radius: .6rem; background: transparent; color: var(--r47-k2); cursor: pointer;
    transition: background .2s, color .2s;
}
.r47-clear[hidden] { display: none; }
.r47-clear svg { width: 1.05rem; height: 1.05rem; }
.r47-clear:hover { background: var(--r47-t3); color: var(--r47-k); }
.r47-count { flex: none; margin: 0 0 0 auto; font-size: .9rem; color: var(--r47-muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.r47-count b { color: var(--r47-k); font-weight: 700; }

/* ---------- Chips ---------- */
.r47-chips { display: flex; align-items: center; gap: .75rem; min-width: 0; }
.r47-chips__label { flex: none; min-width: 4.5rem; font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--r47-muted); }
.r47-chips__row { display: flex; flex-wrap: wrap; gap: .35rem; min-width: 0; }
.r47-chip {
    display: inline-flex; align-items: center; gap: .4rem;
    flex: none; height: 2.25rem; padding: 0 .7rem;
    font: inherit; font-size: .85rem; font-weight: 600; line-height: 1; color: var(--r47-k2); white-space: nowrap;
    background: #fff; border: 1px solid var(--r47-line); border-radius: 2rem; cursor: pointer;
    transition: background .2s, border-color .2s, color .2s;
}
.r47-chip svg { width: .95rem; height: .95rem; color: var(--r47-t1); }
.r47-chip small { font-size: .75rem; font-weight: 600; color: #8a9596; }
.r47-chip:hover { border-color: var(--r47-t2); background: var(--r47-soft); }
.r47-chip.is-active { background: var(--r47-k); border-color: var(--r47-k); color: #fff; }
.r47-chip.is-active svg { color: var(--r47-t3); }
.r47-chip.is-active small { color: rgba(255,255,255,.65); }
.r47-chip:focus-visible, .r47-az__l:focus-visible, .r47-clear:focus-visible, .r47-reset:focus-visible, .r47-card a:focus-visible, .r47-card summary:focus-visible {
    outline: 2px solid var(--r47-t1); outline-offset: 2px;
}

/* Glossary has a single chip row: the label is redundant there (the group keeps its aria-label). */
.r47--glossary .r47-chips__label { display: none; }

/* ---------- Alphabet ---------- */
.r47-az { display: flex; flex-wrap: wrap; gap: .2rem; padding-top: .125rem; }
.r47-az__l {
    display: inline-grid; place-items: center; min-width: 1.95rem; height: 2.05rem; padding: 0 .3rem;
    border-radius: .6rem; font-size: .9rem; font-weight: 700; line-height: 1; text-decoration: none;
    color: var(--r47-k); background: var(--r47-soft);
    transition: background .2s, color .2s, transform .2s;
}
.r47-az__l--wide { padding: 0 .7rem; }
a.r47-az__l:hover { background: var(--r47-t3); color: var(--r47-k); }
a.r47-az__l.is-active { background: var(--r47-t1); color: #fff; }
.r47-az__l.is-off, a.r47-az__l.is-dim { background: transparent; color: #c2cbcb; font-weight: 600; pointer-events: none; }

/* ---------- Groups ---------- */
.r47-groups { display: grid; gap: 0; }
.r47-group {
    display: grid; grid-template-columns: 5rem minmax(0, 1fr); gap: 1.5rem;
    padding: 2rem 0; border-top: 1px solid var(--r47-line);
    scroll-margin-top: var(--r47-off, 14rem);
}
.r47-group:first-child { border-top: 0; padding-top: .5rem; }
.r47-group[hidden] { display: none; }
.r47-group__letter {
    margin: 0; position: sticky; top: calc(var(--r47-off, 14rem) + .5rem); align-self: start;
    font-family: var(--f-head); font-size: 3rem; font-weight: 700; line-height: 1; color: var(--r47-t1);
}
.r47-group--acts { grid-template-columns: minmax(0, 1fr); gap: 1.25rem; }
.r47-group__title { margin: 0; font-family: var(--f-head); font-size: 1.75rem; font-weight: 700; line-height: 1.2; color: var(--r47-k); }
.r47-group__title small { margin-left: .35rem; font-family: var(--f-body, inherit); font-size: .9rem; font-weight: 600; color: var(--r47-muted); vertical-align: middle; }

.r47-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.r47--library .r47-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- Cards ---------- */
.r47-card {
    position: relative; display: flex; flex-direction: column; gap: .5rem; min-width: 0;
    padding: 1.375rem 1.5rem 1.25rem;
    background: #fff; border: 1px solid var(--r47-line); border-radius: 1.125rem;
    scroll-margin-top: var(--r47-off, 14rem);
    transition: border-color .2s, box-shadow .25s, transform .25s;
}
.r47-card[hidden] { display: none; }
.r47-card:hover { border-color: #c9d6d6; box-shadow: 0 .75rem 2rem rgba(18,23,24,.07); transform: translateY(-.125rem); }
.r47-card:target, .r47-card.is-target { border-color: var(--r47-t1); box-shadow: 0 0 0 .25rem rgba(127,163,164,.25); }
.r47-card:target::before, .r47-card.is-target::before {
    content: ""; position: absolute; left: -1px; top: 1.25rem; bottom: 1.25rem; width: .2rem; border-radius: .2rem; background: var(--r47-plum);
}
.r47-card__title { margin: 0; font-family: var(--f-body, inherit); font-size: 1.125rem; font-weight: 700; line-height: 1.35; color: var(--r47-k); overflow-wrap: anywhere; }
.r47-card__title a { color: inherit; text-decoration: none; }
.r47-card__title a:hover { color: var(--r47-t1); }
.r47-card__alt { margin: -.25rem 0 0; font-size: .85rem; font-style: italic; color: var(--r47-t1); }
.r47-card__text { margin: 0; font-size: .95rem; line-height: 1.6; color: #3a4446; }
.r47-card__more summary { cursor: pointer; width: max-content; font-size: .875rem; font-weight: 600; color: var(--r47-t1); }
.r47-card__more p { margin: .5rem 0 0; font-size: .925rem; line-height: 1.6; color: var(--r47-muted); }
.r47-card__meta { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; margin-top: auto; padding-top: .5rem; }
.r47-card__meta--foot { gap: .5rem .75rem; justify-content: space-between; }
.r47-pill, .r47-rel {
    display: inline-flex; align-items: center; gap: .35rem; max-width: 100%;
    padding: .3rem .7rem; border-radius: 2rem; font-size: .78rem; font-weight: 600; line-height: 1.2; text-decoration: none;
    transition: background .2s, color .2s, border-color .2s;
}
.r47-pill { background: var(--r47-soft); color: var(--r47-k2); }
.r47-pill svg { flex: none; width: .9rem; height: .9rem; color: var(--r47-t1); }
.r47-pill:hover { background: var(--r47-k); color: #fff; }
.r47-pill:hover svg { color: var(--r47-t3); }
.r47-rel { border: 1px solid var(--r47-line); color: var(--r47-muted); }
.r47-rel:hover { border-color: var(--r47-t2); color: var(--r47-k); background: var(--r47-soft); }
.r47-card mark { background: rgba(181,207,207,.6); color: inherit; border-radius: .2rem; padding: 0 .05em; }

/* Act cards */
.r47-badge {
    align-self: flex-start; padding: .25rem .6rem; border-radius: .45rem;
    font-size: .68rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; line-height: 1.2;
    background: var(--r47-soft); color: var(--r47-k2);
}
.r47-badge--code { background: var(--r47-k); color: #fff; }
.r47-badge--law { background: var(--r47-t1); color: #fff; }
.r47-badge--constitution { background: var(--r47-plum); color: #fff; }
.r47-badge--treaty { background: var(--r47-t3); color: var(--r47-k); }
.r47-badge--regulator-act { background: #e3ecec; color: var(--r47-k2); }
.r47-card--act .r47-card__title { font-size: 1.05rem; }
.r47-src { display: inline-flex; align-items: center; gap: .3rem; font-size: .875rem; font-weight: 700; color: var(--r47-k); text-decoration: none; border-bottom: 1px solid var(--r47-t2); padding-bottom: .1rem; }
.r47-src svg { width: .9rem; height: .9rem; color: var(--r47-t1); transition: transform .2s; }
.r47-src:hover { color: var(--r47-t1); }
.r47-src:hover svg { transform: translate(.1rem, -.1rem); }

/* ---------- Empty state, note ---------- */
.r47-empty {
    display: grid; justify-items: center; gap: .5rem; text-align: center;
    margin: 1rem 0 2rem; padding: 2.5rem 1.5rem;
    background: var(--r47-soft); border: 1px dashed #c9d4d3; border-radius: 1.25rem;
}
.r47-empty[hidden] { display: none; }
.r47-empty__title { margin: 0; font-family: var(--f-head); font-size: 1.5rem; font-weight: 700; color: var(--r47-k); }
.r47-empty__text { margin: 0 0 .75rem; max-width: 34rem; color: var(--r47-muted); line-height: 1.6; }
.r47-empty__acts { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; }
.r47-reset {
    height: 3rem; padding: 0 1.25rem; border-radius: .875rem; cursor: pointer;
    font: inherit; font-weight: 600; color: var(--r47-k); background: #fff; border: 1px solid var(--r47-line);
}
.r47-reset:hover { border-color: var(--r47-t2); }
.r47-note { margin: 2rem 0 0; padding-top: 1.25rem; border-top: 1px solid var(--r47-line); font-size: .85rem; color: var(--r47-muted); }

/* ---------- Responsive ---------- */
@media (max-width: 1199.98px) {
    .r47--library .r47-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 991.98px) {
    .r47-group { grid-template-columns: 3.5rem minmax(0, 1fr); gap: 1rem; }
    .r47-group__letter { font-size: 2.4rem; }
    .r47-chips__label { min-width: 0; font-size: .65rem; letter-spacing: .06em; }
    .r47-chips { gap: .5rem; }
}
@media (max-width: 767.98px) {
    .r47 { padding-top: 1.5rem; }
    .r47-panel { top: calc(var(--r47-top) + .25rem); gap: .6rem; padding: .75rem; border-radius: 1rem; margin-bottom: 1.5rem; }
    .r47-panel.is-stuck { padding-top: .6rem; padding-bottom: .6rem; }
    .r47-panel__top { flex-wrap: wrap; gap: .4rem; }
    .r47-search { flex-basis: 100%; height: 2.875rem; }
    .r47-kbd { display: none; }
    .r47-count { margin: 0; font-size: .8rem; }
    .r47-chips__row, .r47-az {
        flex-wrap: nowrap; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: none;
        margin: 0 -.75rem; padding: 0 .75rem; scroll-padding: 0 .75rem;
    }
    .r47-chips__row::-webkit-scrollbar, .r47-az::-webkit-scrollbar { display: none; }
    .r47-chip { height: 2.1rem; padding: 0 .75rem; }
    .r47-az__l { flex: none; min-width: 2rem; height: 2rem; }
    .r47-list, .r47--library .r47-list { grid-template-columns: minmax(0, 1fr); }
    .r47-group { grid-template-columns: minmax(0, 1fr); gap: .75rem; padding: 1.5rem 0; }
    .r47-group__letter { position: static; font-size: 2.25rem; }
    .r47-card { padding: 1.125rem 1.125rem 1rem; }
    .r47-card:hover { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
    .r47-panel, .r47-card, .r47-chip, .r47-az__l, .r47-src svg { transition: none; }
    .r47-card:hover { transform: none; }
}