/**
 * WILA Blog Listing Widget — Stylesheet
 * File: assets/css/blog-listing.css
 *
 * Naming prefix: wblw-  (wila-lang-blog-listing-widget)
 *
 * Sections
 *  1. CSS tokens
 *  2. Wrapper
 *  3. Top bar (search + filter button)
 *  4. Search input
 *  5. Filter pills
 *  6. Grid
 *  7. Card shell
 *  8. Card image
 *  9. Card body  (meta · title · author)
 * 10. Loading overlay
 * 11. Empty state
 * 12. Pagination  (load-more + numbered)
 * 13. Transitions / animations
 * 14. Responsive
 *
 * @package WILA_Lang_Addons
 */

/* ─────────────────────────────────────────────
   1. CSS Tokens
   ───────────────────────────────────────────── */
.wblw-wrapper {
    --wblw-accent:       #e85d04;
    --wblw-accent-pale:  #fff1e6;
    --wblw-text:         #1a1a2e;
    --wblw-muted:        #6b7280;
    --wblw-border:       #e5e7eb;
    --wblw-bg:           #ffffff;
    --wblw-bg-alt:       #f3f4f6;
    --wblw-r-card:       14px;
    --wblw-r-img:        14px;
    --wblw-r-pill:       100px;
    --wblw-shadow:       0 4px 24px rgba(0,0,0,.08);
    --wblw-shadow-up:    0 12px 40px rgba(0,0,0,.13);
    --wblw-ease:         cubic-bezier(.4,0,.2,1);
    --wblw-t:            .24s;
    --wblw-gap:          24px;

    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--wblw-text);
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-sizing: border-box;
}

.wblw-wrapper *, .wblw-wrapper *::before, .wblw-wrapper *::after {
    box-sizing: inherit;
}

/* ─────────────────────────────────────────────
   3. Top bar
   ───────────────────────────────────────────── */
.wblw-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ─────────────────────────────────────────────
   4. Search input
   ───────────────────────────────────────────── */
.wblw-search {
    position: relative;
    flex: 1;
}

.wblw-search__icon {
    position: absolute;
    top: 50%; left: 18px;
    transform: translateY(-50%);
    display: flex;
    color: var(--wblw-muted);
    pointer-events: none;
    transition: color var(--wblw-t) var(--wblw-ease);
    z-index: 1;
}

.wblw-search:focus-within .wblw-search__icon { color: var(--wblw-accent); }

.wblw-search__input {
    width: 100%;
    height: 52px;
    padding: 0 44px 0 50px;
    background: var(--wblw-bg-alt);
    border: 2px solid transparent;
    border-radius: var(--wblw-r-pill);
    font-size: .9375rem;
    color: var(--wblw-text);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    transition:
        background var(--wblw-t) var(--wblw-ease),
        border-color var(--wblw-t) var(--wblw-ease),
        box-shadow var(--wblw-t) var(--wblw-ease);
}

.wblw-search__input::placeholder { color: var(--wblw-muted); }

.wblw-search__input:focus {
    background: var(--wblw-bg);
    border-color: var(--wblw-accent);
    box-shadow: 0 0 0 4px rgba(232,93,4,.12);
}

/* Remove browser default "x" in search inputs */
.wblw-search__input::-webkit-search-cancel-button { -webkit-appearance: none; }

.wblw-search__clear {
    position: absolute;
    top: 50%; right: 16px;
    transform: translateY(-50%);
    display: flex;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--wblw-muted);
    padding: 4px;
    border-radius: 50%;
    transition: background var(--wblw-t) var(--wblw-ease), color var(--wblw-t) var(--wblw-ease);
    line-height: 0;
}

.wblw-search__clear:hover { background: var(--wblw-border); color: var(--wblw-text); }

/* Filter toggle button */
.wblw-filter-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 52px;
    padding: 0 20px;
    background: var(--wblw-bg-alt);
    border: 2px solid transparent;
    border-radius: var(--wblw-r-pill);
    font-size: .9375rem;
    font-weight: 500;
    color: var(--wblw-text);
    cursor: pointer;
    white-space: nowrap;
    transition:
        background var(--wblw-t) var(--wblw-ease),
        border-color var(--wblw-t) var(--wblw-ease),
        color var(--wblw-t) var(--wblw-ease);
}

.wblw-filter-toggle:hover,
.wblw-filter-toggle[aria-expanded="true"] {
    background: var(--wblw-accent-pale);
    border-color: var(--wblw-accent);
    color: var(--wblw-accent);
}

/* Active filter dot */
.wblw-filter-dot {
    position: absolute;
    top: 8px; right: 9px;
    width: 7px; height: 7px;
    background: var(--wblw-accent);
    border: 2px solid var(--wblw-bg-alt);
    border-radius: 50%;
    opacity: 0;
    transform: scale(0);
    transition: opacity var(--wblw-t) var(--wblw-ease), transform var(--wblw-t) var(--wblw-ease);
}

.wblw-filter-toggle.has-dot .wblw-filter-dot {
    opacity: 1;
    transform: scale(1);
}

/* ─────────────────────────────────────────────
   5. Filter pills
   ───────────────────────────────────────────── */
.wblw-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition:
        max-height .34s var(--wblw-ease),
        opacity var(--wblw-t) var(--wblw-ease);
}

.wblw-pills.is-open { max-height: 200px; opacity: 1; }

.wblw-pill {
    height: 36px;
    padding: 0 16px;
    background: var(--wblw-bg-alt);
    border: 2px solid transparent;
    border-radius: var(--wblw-r-pill);
    font-size: .875rem;
    font-weight: 500;
    color: var(--wblw-muted);
    cursor: pointer;
    transition:
        background var(--wblw-t) var(--wblw-ease),
        border-color var(--wblw-t) var(--wblw-ease),
        color var(--wblw-t) var(--wblw-ease),
        transform var(--wblw-t) var(--wblw-ease);
}

.wblw-pill:hover { background: var(--wblw-accent-pale); color: var(--wblw-accent); transform: translateY(-1px); }

.wblw-pill.active {
    background: var(--wblw-accent);
    border-color: var(--wblw-accent);
    color: #fff;
}

/* ─────────────────────────────────────────────
   6. Grid
   ───────────────────────────────────────────── */
.wblw-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--wblw-gap);
    transition: opacity .18s var(--wblw-ease);
}

.wblw-grid--out { opacity: .35; pointer-events: none; }

/* ─────────────────────────────────────────────
   7. Card shell
   ───────────────────────────────────────────── */
.wblw-card {
    display: flex;
    flex-direction: column;
    background: var(--wblw-bg);
    border-radius: var(--wblw-r-card);
    box-shadow: var(--wblw-shadow);
    overflow: hidden;
    animation: wblwCardIn .32s both var(--wblw-ease);
    transition: transform var(--wblw-t) var(--wblw-ease), box-shadow var(--wblw-t) var(--wblw-ease);
}

/* Staggered entrances */
.wblw-card:nth-child(1) { animation-delay: .00s; }
.wblw-card:nth-child(2) { animation-delay: .06s; }
.wblw-card:nth-child(3) { animation-delay: .12s; }
.wblw-card:nth-child(4) { animation-delay: .18s; }
.wblw-card:nth-child(5) { animation-delay: .24s; }
.wblw-card:nth-child(6) { animation-delay: .30s; }
.wblw-card:nth-child(7) { animation-delay: .36s; }
.wblw-card:nth-child(8) { animation-delay: .42s; }
.wblw-card:nth-child(9) { animation-delay: .48s; }

.wblw-card:hover { transform: translateY(-6px); box-shadow: var(--wblw-shadow-up); }

/* ─────────────────────────────────────────────
   8. Card image
   ───────────────────────────────────────────── */
.wblw-card__img-wrap {
    display: block;
    position: relative;
    width: 100%;
    padding-top: 56.25%;   /* 16:9 */
    overflow: hidden;
    border-radius: var(--wblw-r-img);
    background: var(--wblw-bg-alt);
    flex-shrink: 0;
    text-decoration: none;
}

.wblw-card__img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .5s var(--wblw-ease);
}

.wblw-card:hover .wblw-card__img { transform: scale(1.045); }

.wblw-card__img--ph {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f3f4f6 0%, #e9eaec 100%);
    color: #c4c8ce;
}

/* Badge */
.wblw-badge {
    position: absolute;
    top: 12px; left: 12px;
    padding: 4px 10px;
    background: #f59e0b;
    color: #fff;
    font-size: .6875rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    border-radius: 6px;
    z-index: 2;
    pointer-events: none;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* ─────────────────────────────────────────────
   9. Card body
   ───────────────────────────────────────────── */
.wblw-card__body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px 18px 18px;
    flex: 1;
}

/* Meta row */
.wblw-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: .8125rem;
    color: var(--wblw-muted);
    line-height: 1;
}

.wblw-meta__item { display: flex; align-items: center; gap: 4px; }
.wblw-meta__item svg { opacity: .75; flex-shrink: 0; }
.wblw-meta__sep { opacity: .5; font-size: .75rem; }

/* Title */
.wblw-card__title {
    margin: 0;
    font-size: 1.0625rem;
    font-weight: 600;
    line-height: 1.45;
    flex: 1;
}

.wblw-card__title a {
    color: var(--wblw-text);
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--wblw-t) var(--wblw-ease);
}

.wblw-card__title a:hover { color: var(--wblw-accent); }

/* Author */
.wblw-author {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--wblw-border);
}

.wblw-author__avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--wblw-bg-alt);
}

.wblw-author__name { font-size: .875rem; font-weight: 500; }

/* ─────────────────────────────────────────────
   10. Loading overlay
   ───────────────────────────────────────────── */
.wblw-loading {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,.72);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    align-items: center;
    justify-content: center;
    z-index: 20;
    border-radius: var(--wblw-r-card);
}

.wblw-loading.is-on { display: flex; }

.wblw-spinner {
    width: 38px; height: 38px;
    border: 3px solid var(--wblw-border);
    border-top-color: var(--wblw-accent);
    border-radius: 50%;
    animation: wblwSpin .65s linear infinite;
}

/* ─────────────────────────────────────────────
   11. Empty state
   ───────────────────────────────────────────── */
.wblw-empty {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 60px 20px;
    color: var(--wblw-muted);
    text-align: center;
}

/* Toggled on by JS when a fetch returns zero posts */
.wblw-empty.is-visible {
    display: flex;
}

.wblw-empty svg { opacity: .32; }
.wblw-empty p   { margin: 0; font-size: 1rem; }

/* ─────────────────────────────────────────────
   12. Pagination
   ───────────────────────────────────────────── */
.wblw-pager {
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wblw-load-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 48px;
    padding: 0 32px;
    background: var(--wblw-bg);
    border: 2px solid var(--wblw-accent);
    border-radius: var(--wblw-r-pill);
    font-size: .9375rem;
    font-weight: 600;
    color: var(--wblw-accent);
    cursor: pointer;
    transition:
        background var(--wblw-t) var(--wblw-ease),
        color var(--wblw-t) var(--wblw-ease),
        transform var(--wblw-t) var(--wblw-ease),
        box-shadow var(--wblw-t) var(--wblw-ease);
}

.wblw-load-more:hover {
    background: var(--wblw-accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(232,93,4,.28);
}

.wblw-load-more.is-gone { display: none; }

/* Numbered */
.wblw-pages { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; justify-content: center; }

.wblw-pgbtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px; height: 40px;
    padding: 0 8px;
    background: var(--wblw-bg);
    border: 2px solid var(--wblw-border);
    border-radius: 10px;
    font-size: .9rem;
    font-weight: 500;
    color: var(--wblw-muted);
    cursor: pointer;
    transition:
        background var(--wblw-t) var(--wblw-ease),
        border-color var(--wblw-t) var(--wblw-ease),
        color var(--wblw-t) var(--wblw-ease),
        transform var(--wblw-t) var(--wblw-ease);
}

.wblw-pgbtn:hover:not(.is-cur) { border-color: var(--wblw-accent); color: var(--wblw-accent); transform: translateY(-1px); }
.wblw-pgbtn.is-cur { background: var(--wblw-accent); border-color: var(--wblw-accent); color: #fff; }
.wblw-pgdots { min-width: 32px; text-align: center; color: var(--wblw-muted); }

/* ─────────────────────────────────────────────
   13. Animations
   ───────────────────────────────────────────── */
@keyframes wblwCardIn {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes wblwSpin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
    .wblw-card, .wblw-card:hover, .wblw-card__img, .wblw-pills,
    .wblw-load-more, .wblw-pgbtn { animation: none !important; transition: none !important; }
}

/* ─────────────────────────────────────────────
   14. Responsive
   ───────────────────────────────────────────── */
@media (max-width: 1024px) and (min-width: 769px) {
    .wblw-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .wblw-grid    { grid-template-columns: 1fr; }
    .wblw-topbar  { flex-wrap: wrap; }
    .wblw-filter-toggle { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
    .wblw-wrapper { --wblw-gap: 16px; }
    .wblw-load-more { width: 100%; justify-content: center; }
}