/** pdf issues css **/
/* ================================
PDF Issues - Base Styles
================================ */
.pdf-block {
    margin: 1rem 0;
    padding: 1rem;
    background: #ffffff;
}

.pdf-block h2 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    text-align: right;
}

.pdf-intro {
    padding: 1rem;
}

.pdf-teaser {
    margin-top: 1rem;
    text-align: center;
}

/* ================================
By Year
================================ */
.pdfperyear {
    margin-bottom: 2.5rem;
}

.pdfperyear h3 {
    direction: rtl;
    margin-bottom: 1rem;
    font-size: 1.4rem;
    color: #444;
    text-align: right;
}

/* ================================
Cover Grid (4 per row)
================================ */
.pdf-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(4, 1fr);
    margin: 0;
    padding: 0;
    list-style: none;
}

.pdf-grid li {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.pdf-grid img {
    object-fit: cover;
    width: 100%;
    height: 260px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.pdf-grid img:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transform: scale(1.03);
}

/* ================================
Metadata under cover
================================ */
.pdf-meta {
    margin-top: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    text-align: center;
}

/** styling for locked article **/
/* Restricted access box */
.excerpt-public, .no_access {
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    direction: rtl;
    margin: 1rem auto;
    padding: 1.5rem;
    background: #fafafa;
    border: 1px solid #e0e0e0;
    border-radius: 1rem;
    text-align: justify;
}

/* Lock icon */
.login-required-mini .mini-icon {
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
    color: #888;
}

/* Message text */
.login-required-mini p {
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
    color: #000;
}

/* Button container */
.login-required-mini .mini-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

/* Buttons */
.btn-mini-register,
.btn-mini-login {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    transition: background 0.3s ease, transform 0.2s ease;
    border-radius: 0.5rem;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
}

.btn-mini-register {
    background: #007bff;
}

.btn-mini-register:hover {
    transform: translateY(-2px);
    background: #0056b3;
}

.btn-mini-login {
    background: #28a745;
}

.btn-mini-login:hover {
    transform: translateY(-2px);
    background: #1e7e34;
}

/* ================================
Responsive Breakpoints
================================ */
@media (max-width: 900px) {
    .pdf-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    .pdf-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 400px) {
    .pdf-grid {
        grid-template-columns: 1fr;
    }
}