/* ── Skeleton loader ────────────────────────────────────────────────────── */

@keyframes upnsl-shimmer {
    0%   { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.upn-slider:not([data-upn-initialized="1"]) {
    min-height: 300px;
    border-radius: var(--upn-radius, 6px);
    background-color: #e9eaec;
    position: relative;
}

/* Shimmer y formas del skeleton con bordes redondeados */
.upn-slider:not([data-upn-initialized="1"])::before,
.upn-slider:not([data-upn-initialized="1"])::after {
    border-radius: var(--upn-radius, 6px);
}

/* Formas del skeleton: área de imagen + título + fecha */
.upn-slider:not([data-upn-initialized="1"])::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(#d2d4d8 100%, transparent 0%)  0    0    / 100%  68% no-repeat,
        linear-gradient(#d2d4d8 100%, transparent 0%)  5%   72%  / 55%   5%  no-repeat,
        linear-gradient(#d2d4d8 100%, transparent 0%)  5%   80%  / 30%   3%  no-repeat;
}

/* Shimmer sweep */
.upn-slider:not([data-upn-initialized="1"])::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.45) 50%,
        transparent 100%
    );
    animation: upnsl-shimmer 1.6s ease-in-out infinite;
}

/* Ocultar el contenido real mientras carga (excepto el loader) */
.upn-slider:not([data-upn-initialized="1"]) > *:not(.upn-slider__loader) {
    opacity: 0;
    pointer-events: none;
}

/* Spinner */
@keyframes upnsl-spin {
    to { transform: rotate(360deg); }
}

.upn-slider__loader {
    display: none;
}

.upn-slider:not([data-upn-initialized="1"]) .upn-slider__loader {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    inset: 0;
    z-index: 10;
}

.upn-slider__loader::after {
    content: '';
    width: 36px;
    height: 36px;
    border: 3px solid rgba(0, 28, 124, 0.15);
    border-top-color: var(--upn-primary, #001C7C);
    border-radius: 50%;
    animation: upnsl-spin 0.8s linear infinite;
}

/* Fade-in suave al inicializar */
.upn-slider[data-upn-initialized="1"] {
    animation: upnsl-fadein 0.3s ease forwards;
}

@keyframes upnsl-fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ── Base ───────────────────────────────────────────────────────────────── */

.upn-slider {
    position: relative;
    width: 100%;
    margin: 0 0 2.5rem;
    box-sizing: border-box;
}

.upn-slider *,
.upn-slider *::before,
.upn-slider *::after {
    box-sizing: border-box;
}

.upn-slider .swiper {
    width: 100%;
    overflow: hidden;
}

.upn-slider__card {
    background: var(--upn-card-bg);
    border-radius: var(--upn-radius);
    border: 1px solid var(--upn-card-border);
    overflow: hidden;
    height: 100%;
}

.upn-slider__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

.upn-slider__image-wrap {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #eef0f7;
}

.upn-slider__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 400ms ease;
}

.upn-slider__card:hover .upn-slider__image {
    transform: scale(1.04);
}

.upn-slider__body {
    padding: 1rem 1.1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
}

.upn-slider__date {
    font-size: 0.78rem;
    color: var(--upn-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.upn-slider__title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.35;
    margin: 0;
    color: var(--upn-text);
}

.upn-slider__excerpt {
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--upn-text-muted);
    margin: 0;
}

.upn-slider-error {
    padding: 0.75rem 1rem;
    border-left: 3px solid #b91c1c;
    background: #fef2f2;
    color: #7f1d1d;
    font-size: 0.92rem;
}