/* References Block Styles */
.references-block {
    margin: 2rem 0;
}

.references-block-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: #333;
}

.references-block-description {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Filter Styles */
.references-filters {
    margin-bottom: 3rem;
    text-align: center;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.filter-btn {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    color: #495057;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.filter-btn:hover {
    background: #e9ecef;
    border-color: var(--global-palette-highlight);
    color: var(--global-palette-highlight);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: transparent;
    border-color: var(--global-palette-highlight);
    color: var(--global-palette-highlight);
}

.filter-btn.active:hover {
    background: var(--global-palette-highlight);
    border-color: var(--global-palette-highlight);
    color: #fff;
    opacity: 1;
}

.references-grid {
    display: grid;
    gap: 3rem;
    margin-bottom: 2rem;
}

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

.references-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.references-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.references-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.reference-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow: visible;
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: 400px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.reference-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    z-index: 1;
    transition: background 0.3s ease;
    border-radius: 12px;
}

.reference-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.reference-card:hover::before {
    background: transparent;
}

.reference-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
    position: relative;
    z-index: 2;
    justify-content: flex-end;
}

.reference-card-link:hover {
    color: inherit;
    text-decoration: none;
}

.reference-thumbnail {
    display: none;
}

.reference-thumbnail img {
    display: none;
}

.card-content-glass {
    position: absolute;
    bottom: -20px;
    right: -20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
    width: auto;
    height: auto;
    animation: slideInGlass 1s ease-in-out;
}

@keyframes slideInGlass {
    0% {
        bottom: 0;
        right: 0;
        left: 0;
        opacity: 0;
    }

    100% {
        bottom: -20px;
        right: -20px;
        left: 20px;
        opacity: 1;
    }
}

.card-content-glass:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.reference-card:hover .card-content-glass {
    transform: translateY(-10px);
    transition: transform 0.3s ease-in-out;
}

.card-content-glass .reference-content {
    padding: 1rem;
    margin: 1rem 0;
    display: flex;
    flex-direction: column;
}

.card-content-glass .reference-title {
    margin: 0 0 1rem 0;
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
    flex-shrink: 0;
    color: #ff6d00;
    position: relative;
    text-transform: uppercase;
    text-shadow:
        -1px -1px 0 #36454F,
        1px -1px 0 #36454F,
        -1px 1px 0 #36454F,
        1px 1px 0 #36454F;
}

.card-content-glass .reference-title::after {
    bottom: 13px;
}

.card-content-glass .reference-title a {
    color: #ff6d00;
    text-decoration: none;
    transition: color 0.3s ease;
}

.card-content-glass .reference-title a:hover {
    color: #ff6d00;
    opacity: 0.8;
}

.card-content-glass .reference-meta {
    margin-bottom: 1rem;
    font-size: 15px;
    color: var(--global-palette8);
    flex-shrink: 0;
    letter-spacing: 1.5px;
}

.card-content-glass .reference-meta>div {
    /* margin-bottom: 0.5rem; */
    font-size: 15px;
    font-weight: 600;
    color: var(--global-palette8);
    letter-spacing: 1.5px;
}

.card-content-glass .reference-meta>div:last-child {
    margin-bottom: 0;
}

.card-content-glass .reference-meta strong {
    color: var(--global-palette8);
    font-weight: 400;
    letter-spacing: normal;
}

.card-content-glass .reference-meta a {
    color: var(--global-palette1);
    text-decoration: none;
    position: relative;
}

.card-content-glass .reference-meta a::before {
    content: '→ ';
    margin-right: 0.25rem;
}

.card-content-glass .reference-meta a:hover {
    color: var(--global-palette1);
    opacity: 0.8;
}

.card-content-glass .reference-excerpt {
    color: #000;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
    opacity: 0.9;
    font-size: 15px;
}

.reference-read-more {
    margin-top: auto;
    flex-shrink: 0;
}

.read-more-btn {
    display: inline-block;
    background: var(--global-palette-highlight);
    color: #fff;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
}

.read-more-btn:hover {
    background: var(--global-palette-highlight);
    color: #fff;
    transform: translateY(-1px);
    opacity: 0.9;
}

.no-references {
    text-align: center;
    padding: 3rem 1rem;
    color: #666;
    font-size: 1.1rem;
}

/* Wide and Full Width Alignment */
.alignwide .references-grid {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.alignfull .references-grid {
    padding: 0 2rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .references-grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .references-block-title {
        font-size: 2rem;
    }

    .filter-buttons {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.6rem 1.25rem;
        font-size: 0.85rem;
    }

    .references-grid-3,
    .references-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .references-grid {
        gap: 1.5rem;
    }

    .reference-content {
        padding: 1.25rem;
    }

    .alignfull .references-grid {
        padding: 0 1rem;
    }

    .card-content-glass {
        bottom: auto;
        right: auto;
        left: auto;
        width: 100%;
        animation: none;
    }
}

@media (max-width: 480px) {
    .references-block {
        margin-top: 0;
    }

    .references-block-title {
        font-size: 1.75rem;
    }

    .filter-buttons {
        gap: 0.4rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
        flex-basis: 100%;
        max-width: 240px;
        margin-top: 10px;
    }

    .references-grid-2,
    .references-grid-3,
    .references-grid-4 {
        grid-template-columns: 1fr;
    }

    .references-grid {
        gap: 1rem;
    }

    .reference-content {
        padding: 1rem;
    }

    .reference-title {
        font-size: 1.1rem;
    }
}

/* Editor specific styles */
.wp-block-acf-references {
    margin: 2rem 0;
}

/* Admin preview styling */
.acf-block-preview .references-block {
    border: 2px dashed #ccc;
    padding: 1rem;
    margin: 1rem 0;
}

.acf-block-preview .references-block-title {
    margin-top: 0;
}

/* Country flag corner styling */
.card-content-glass .reference-flag-corner {
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 10;
    padding: 4px;
}

.card-content-glass .country-flag-corner {
    width: 32px;
    height: 24px;
    border-radius: 2px;
    display: block;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    object-fit: cover;
}