/* ==========================================================================
   REFERENCES – Carousel + Grid + Filters
   ========================================================================== */

/* Carousel
   ========================================================================== */

.ref-carousel {
    margin-bottom: 48px;
    padding-bottom: 40px;
    position: relative;
}

.ref-carousel .swiper-slide {
    height: auto;
    width: 600px;
}

.ref-carousel-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 380px;
    background-size: cover;
    background-position: center;
    background-color: var(--color-gray-300);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.ref-carousel-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 30%,
        rgba(0, 0, 0, 0.55) 100%
    );
    border-radius: var(--radius-lg);
    z-index: 1;
    transition: background 0.3s;
}

.ref-carousel-card:hover::before {
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 20%,
        rgba(0, 0, 0, 0.65) 100%
    );
}

.ref-carousel-card__body {
    position: relative;
    z-index: 2;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.ref-carousel-card__category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    color: var(--color-white);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 10px;
}

.ref-carousel-card__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 14px;
    line-height: 1.3;
}

.ref-carousel-card__btn {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-dark);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 6px;
    transition: background 0.2s;
}

.ref-carousel-card__btn:hover {
    background: var(--color-primary-hover);
    color: var(--color-dark);
}

/* Swiper nav / pagination overrides */

.ref-carousel .swiper-pagination {
    bottom: 0;
}

.ref-carousel .swiper-pagination-bullet {
    background: var(--color-white);
    opacity: 0.5;
    width: 8px;
    height: 8px;
}

.ref-carousel .swiper-pagination-bullet-active {
    background: var(--color-primary);
    opacity: 1;
}

.ref-carousel .swiper-button-prev,
.ref-carousel .swiper-button-next {
    color: var(--color-white);
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: none;
    border-radius: 50%;
    top: calc(50% - 20px);
    transition: background 0.2s;
}

.ref-carousel .swiper-button-prev:hover,
.ref-carousel .swiper-button-next:hover {
    background: rgba(0, 0, 0, 0.55);
}

.ref-carousel .swiper-button-prev::after,
.ref-carousel .swiper-button-next::after {
    font-size: 14px;
    font-weight: 700;
}

.ref-carousel .swiper-button-prev { left: 12px; }
.ref-carousel .swiper-button-next { right: 12px; }

/* Filters
   ========================================================================== */

.ref-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.ref-filter-btn {
    display: inline-block;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.2s;
}

.ref-filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.ref-filter-btn.active {
    background: var(--color-primary);
    color: var(--color-dark);
    border-color: var(--color-primary);
}

/* Advanced filters
   ========================================================================== */

.ref-filters-advanced {
    margin-bottom: 28px;
}

.ref-filters-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
}

.ref-filter-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 8px 36px 8px 16px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23666' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    transition: border-color 0.2s;
}

.ref-filter-select:hover,
.ref-filter-select:focus {
    border-color: var(--color-primary);
    outline: none;
}

/* No results
   ========================================================================== */

.ref-no-results {
    display: none;
    text-align: center;
    padding: 48px 20px;
    color: var(--color-text-muted);
    font-size: 15px;
    grid-column: 1 / -1;
}

/* Page template
   ========================================================================== */

.ref-page-main {
    padding-top: var(--header-height);
}

/* Grid
   ========================================================================== */

.ref-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.ref-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.3s, border-color 0.3s;
}

.ref-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
}

.ref-card__image {
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.ref-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ref-card__body {
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.ref-card__category {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary-hover);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 8px;
    align-self: flex-start;
}

.ref-card__title {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
    line-height: 1.3;
}

.ref-card__excerpt {
    font-size: 13px;
    line-height: 1.5;
    color: var(--color-text-muted);
    margin: 0 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ref-card__meta {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: auto;
    display: flex;
    gap: 12px;
}

.ref-card__meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Responsive
   ========================================================================== */

@media (max-width: 1024px) {
    .ref-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .ref-carousel .swiper-slide {
        width: 300px;
    }

    .ref-carousel-card {
        height: 320px;
    }

    .ref-carousel-card__title {
        font-size: 17px;
    }

    .ref-grid {
        grid-template-columns: 1fr;
    }

    .ref-carousel .swiper-button-prev,
    .ref-carousel .swiper-button-next {
        display: none;
    }

    .ref-filters {
        gap: 6px;
    }

    .ref-filter-btn {
        padding: 6px 14px;
        font-size: 12px;
    }

    .ref-filters-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .ref-filter-select {
        width: 100%;
    }
}