.publication-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8f9fb 0%, #eef2f7 100%);
    font-family: Arial, sans-serif;
}

.publication-header {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 65px;
}

.publication-subtitle {
    display: inline-block;
    font-size: 15px;
    font-weight: 800;
    color: #ff7d57;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.publication-header h2 {
    font-size: 52px;
    line-height: 1.15;
    color: #0f172a;
    margin: 0 0 18px;
    font-weight: 900;
    letter-spacing: -0.8px;
    text-transform: uppercase;
}

.publication-header p {
    font-size: 18px;
    line-height: 1.85;
    color: #526074;
    margin: 0 auto;
    max-width: 720px;
}

.publication-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
}

.publication-card {
    position: relative;
    background: #ffffff;
    border: 1px solid #dce5ef;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.07);
    transition: transform 0.4s ease, box-shadow 0.4s ease, opacity 0.5s ease;
    opacity: 1;
    transform: translateY(0);
    display: flex;
    flex-direction: column;
    min-height: 100%;
    isolation: isolate;
}

.publication-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 38px rgba(15, 23, 42, 0.15);
}

.circle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    transition: transform 0.7s ease, opacity 0.7s ease;
    z-index: 0;
}

.circle-one {
    width: 180px;
    height: 180px;
    background: rgba(108, 168, 255, 0.18);
    top: -70px;
    right: -70px;
    transform: scale(0);
    transform-origin: top right;
    opacity: 0.8;
}

.circle-two {
    width: 220px;
    height: 220px;
    background: rgba(255, 140, 102, 0.14);
    bottom: -100px;
    left: -100px;
    transform: scale(0);
    transform-origin: bottom left;
    opacity: 0.7;
}

.publication-card:hover .circle-one,
.publication-card:hover .circle-two {
    transform: scale(1.8);
}

.publication-card-top,
.publication-card-body {
    position: relative;
    z-index: 1;
}

.publication-card-top {
    background: linear-gradient(135deg, #cfe4ff 0%, #b8d8ff 100%);
    padding: 24px 22px 20px;
    min-height: 155px;
    border-bottom: 1px solid #d8e6f4;
    display: flex;
    align-items: flex-start;
}

.publication-card-top h3 {
    margin: 0;
    font-size: 17px;
    line-height: 1.45;
    font-weight: 800;
    color: #0f172a;
    text-transform: uppercase;
}

.publication-card-body {
    padding: 18px 22px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
    background: rgba(255, 255, 255, 0.92);
}

.publication-card-body h4 {
    margin: 0 0 14px;
    font-size: 15px;
    line-height: 1.6;
    font-weight: 700;
    color: #1f2937;
}

.publication-card-body p {
    margin: 0 0 8px;
    font-size: 14px;
    line-height: 1.65;
    color: #374151;
}

.meta {
    color: #1e3a5f;
    font-weight: 700;
    margin-bottom: 12px !important;
}

.meta span {
    color: #8b98aa;
    margin: 0 6px;
}

.info-block {
    margin-bottom: 10px;
}

.info-link {
    display: inline-block;
    color: #2563eb;
    font-size: 14px;
    line-height: 1.6;
    word-break: break-word;
}

.isbn-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
}

.info-pill {
    display: inline-block;
    background: #e8f0fb;
    color: #2563eb;
    padding: 7px 12px;
    border-radius: 14px;
    font-size: 13px;
    transition: background 0.3s ease, transform 0.3s ease;
}

.info-pill:hover {
    background: #dce9fb;
    transform: translateY(-2px);
}

.contributors {
    margin-top: 6px;
    margin-bottom: 18px !important;
    color: #111827;
}

.details-btn {
    margin-top: auto;
    display: inline-block;
    text-decoration: none;
    background: #5f9bb6;
    color: #fff;
    text-align: center;
    padding: 14px 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    transition: background 0.3s ease, transform 0.3s ease;
}

.details-btn:hover {
    background: #4d87a2;
    transform: translateY(-2px);
}

.publication-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: #526074;
    font-size: 18px;
}

/* Laravel pagination */
.publication-pagination {
    margin-top: 50px;
    display: flex;
    justify-content: center;
}

.publication-pagination nav {
    display: flex;
    justify-content: center;
}

.publication-pagination .pagination {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
}

.publication-pagination .page-item {
    list-style: none;
}

.publication-pagination .page-link,
.publication-pagination .page-item span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    border-radius: 999px;
    text-decoration: none;
    background: #ffffff;
    border: 1px solid #d5e0ea;
    color: #334155;
    font-size: 14px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.publication-pagination .page-link:hover {
    background: #5f9bb6;
    border-color: #5f9bb6;
    color: #fff;
}

.publication-pagination .page-item.active .page-link,
.publication-pagination .page-item.active span {
    background: #5f9bb6;
    border-color: #5f9bb6;
    color: #fff;
}

.publication-pagination .page-item.disabled .page-link,
.publication-pagination .page-item.disabled span {
    opacity: 0.5;
    pointer-events: none;
}

/* large laptop */
@media (max-width: 1199px) {
    .publication-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .publication-header h2 {
        font-size: 42px;
    }
}

/* tablet */
@media (max-width: 991px) {
    .publication-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .publication-header h2 {
        font-size: 34px;
    }

    .publication-header p {
        font-size: 16px;
    }
}

/* mobile */
@media (max-width: 575px) {
    .publication-section {
        padding: 70px 0;
    }

    .publication-header {
        margin-bottom: 35px;
    }

    .publication-subtitle {
        font-size: 12px;
        margin-bottom: 10px;
    }

    .publication-header h2 {
        font-size: 28px;
        line-height: 1.2;
    }

    .publication-header p {
        font-size: 15px;
    }

    .publication-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .publication-card-top {
        min-height: auto;
        padding: 18px 16px;
    }

    .publication-card-body {
        padding: 16px 16px 18px;
    }

    .publication-card-top h3 {
        font-size: 16px;
    }

    .publication-card-body h4 {
        font-size: 15px;
    }

    .publication-card-body p,
    .info-link,
    .info-pill,
    .details-btn {
        font-size: 13px;
    }

    .publication-pagination .page-link,
    .publication-pagination .page-item span {
        min-width: 38px;
        height: 38px;
        padding: 0 12px;
    }
}