/* ========================================
   Links Page Styles
   ======================================== */

/* Page Title */
.page-title {
    text-align: center;
    padding: 40px 0;
    background: linear-gradient(135deg, #8B0000 0%, #a52a2a 100%);
    margin-bottom: 40px;
    border-radius: 10px;
}

.page-title h1 {
    font-size: 42px;
    font-family: times;
    color: #fff;
    margin-bottom: 10px;
    font-weight: normal;
}

.page-title p {
    font-size: 18px;
    color: rgba(255,255,255,0.8);
    font-family: times;
}

/* Main Layout - Left Sidebar + Right Content */
.links-wrapper {
    display: flex;
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Left Sidebar Navigation - Same as publications */
.sidebar-nav {
    width: 250px;
    flex-shrink: 0;
    position: sticky;
    top: 20px;
    height: fit-content;
}

.sidebar-nav h3 {
    font-size: 22px;
    font-family: times;
    color: #fff;
    padding: 15px 20px;
    background-color: #00275f;
    border-radius: 8px 8px 0 0;
    margin: 0;
}

.sidebar-nav > ul {
    background-color: #fff;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 8px 8px;
    overflow: hidden;
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav > ul > li {
    border-bottom: 1px solid #eee;
}

.sidebar-nav > ul > li:last-child {
    border-bottom: none;
}

/* First level links */
.sidebar-nav > ul > li > a {
    display: block;
    padding: 15px 20px;
    color: #333;
    font-size: 18px;
    font-family: times;
    transition: all 0.3s;
    position: relative;
    text-decoration: none;
}

.sidebar-nav > ul > li > a:hover,
.sidebar-nav > ul > li > a.active {
    background-color: #f5f5f5;
    color: #8B0000;
    padding-left: 30px;
}

.sidebar-nav > ul > li > a.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: #8B0000;
}

/* Submenu - Second level */
.submenu {
    list-style: none;
    padding: 0;
    margin: 0;
    background-color: #fafafa;
    border-top: 1px solid #eee;
}

.submenu li {
    border-bottom: 1px solid #eee;
}

.submenu li:last-child {
    border-bottom: none;
}

.submenu li a {
    display: block;
    padding: 12px 20px 12px 35px;
    color: #666;
    font-size: 16px;
    font-family: times;
    transition: all 0.3s;
    position: relative;
    text-decoration: none;
}

.submenu li a::before {
    content: '•';
    position: absolute;
    left: 20px;
    color: #999;
}

.submenu li a:hover {
    background-color: #f0f0f0;
    color: #8B0000;
    padding-left: 40px;
}

.submenu li a[target="_blank"]::after {
    content: " ↗";
    font-size: 12px;
    color: #999;
}

/* Right Content Area */
.links-content {
    flex: 1;
    min-width: 0;
}

.links-section {
    margin-bottom: 50px;
}

.section-title {
    font-size: 28px;
    font-family: 'Times New Roman', Times, serif;
    color: #00275f;
    border-bottom: 3px solid #00275f;
    padding-bottom: 10px;
    margin-bottom: 30px;
    font-weight: bold;
}

/* Journal Grid - Others Section */
.journal-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.journal-item {
    background-color: #fff;

    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.journal-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.journal-item a {
    display: block;
    text-decoration: none;
    border: 1px solid rgb(204, 204, 204);
    padding: 3px;
}

.journal-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

/* Links List - Organic Chemistry Links */
.links-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.links-list li {
    margin-bottom: 10px;
    border-bottom: 1px solid #eee;
    padding: 10px 20px;
    background: #fff;
}


.links-list li a {
    display: flex;
    align-items: center;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 16px;
    font-family: 'Times New Roman', Times, serif;
}

.links-list li a:hover {
    color: #8B0000;
    padding-left: 10px;
}

.links-list li a[target="_blank"]::after {
    content: "↗";
    margin-left: auto;
    font-size: 14px;
    color: #999;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .links-wrapper {
        flex-direction: column;
    }
    
    .sidebar-nav {
        width: 100%;
        position: static;
        margin-bottom: 30px;
    }
    
    .sidebar-nav h3 {
        font-size: 20px;
    }
    
    .sidebar-nav > ul > li > a {
        font-size: 16px;
        padding: 12px 15px;
    }
    
    .submenu li a {
        font-size: 14px;
        padding: 10px 15px 10px 30px;
    }
    
    .submenu li a::before {
        left: 15px;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .journal-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .journal-item img {
        height: 150px;
    }
    
    .links-list li a {
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .page-title h1 {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .journal-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .journal-item img {
        height: 200px;
    }
    
    .links-list li a {
        font-size: 14px;
    }
}