/* ==========================================================================
   Modern Frontend Theme Enhancements for OJS
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');

:root {
    --primary-color: #0284c7;
    --primary-hover: #0369a1;
    --primary-light: #e0f2fe;
    --dark-text: #0f172a;
    --muted-text: #64748b;
    --light-bg: #f8fafc;
    --card-border: #e2e8f0;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
    color: var(--dark-text) !important;
    background-color: #f8fafc !important;
    line-height: 1.6 !important;
}

h1, h2, h3, h4, h5, h6, .journal-logo {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif !important;
    font-weight: 700 !important;
    color: var(--dark-text) !important;
}

/* --- Header & Navigation Bar --- */
.pkp_structure_head {
    background: #ffffff !important;
    border-bottom: 1px solid var(--card-border) !important;
    box-shadow: var(--shadow-sm) !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 1000 !important;
}

.pkp_site_name .is_text {
    font-size: 1.4rem !important;
    font-weight: 800 !important;
    color: var(--primary-color) !important;
    letter-spacing: -0.02em !important;
    text-decoration: none !important;
}

.pkp_nav_list a {
    font-weight: 500 !important;
    color: #334155 !important;
    padding: 8px 14px !important;
    border-radius: var(--radius-md) !important;
    transition: all 0.2s ease !important;
}

.pkp_nav_list a:hover {
    color: var(--primary-color) !important;
    background: var(--primary-light) !important;
}

/* --- Homepage Hero & Announcements --- */
.homepage_about, .journal_summary {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%) !important;
    color: #ffffff !important;
    padding: 3rem 2rem !important;
    border-radius: var(--radius-lg) !important;
    margin-bottom: 2.5rem !important;
    box-shadow: var(--shadow-md) !important;
}

.homepage_about h2, .journal_summary h2 {
    color: #ffffff !important;
    font-size: 1.8rem !important;
    margin-bottom: 1rem !important;
}

/* --- Article Cards (Issue TOC & Search Results) --- */
.obj_article_summary, .article-summary {
    background: #ffffff !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius-lg) !important;
    padding: 1.5rem !important;
    margin-bottom: 1.25rem !important;
    box-shadow: var(--shadow-sm) !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.obj_article_summary:hover, .article-summary:hover {
    transform: translateY(-3px) !important;
    box-shadow: var(--shadow-md) !important;
    border-color: #cbd5e1 !important;
}

.obj_article_summary .title, .article-summary .title {
    font-size: 1.2rem !important;
    font-weight: 700 !important;
    line-height: 1.4 !important;
    margin-bottom: 0.5rem !important;
}

.obj_article_summary .title a, .article-summary .title a {
    color: var(--dark-text) !important;
    text-decoration: none !important;
    transition: color 0.2s ease !important;
}

.obj_article_summary .title a:hover, .article-summary .title a:hover {
    color: var(--primary-color) !important;
}

.obj_article_summary .authors, .article-summary .authors {
    color: var(--muted-text) !important;
    font-size: 0.92rem !important;
    font-weight: 500 !important;
    margin-bottom: 0.75rem !important;
}

.obj_article_summary .pages, .article-summary .pages {
    font-size: 0.85rem !important;
    color: #94a3b8 !important;
}

/* --- Galley PDF Buttons --- */
.obj_galley_link, .galley_link, a.file {
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    background: var(--primary-color) !important;
    color: #ffffff !important;
    font-size: 0.85rem !important;
    font-weight: 600 !important;
    padding: 6px 14px !important;
    border-radius: var(--radius-md) !important;
    text-decoration: none !important;
    box-shadow: 0 2px 4px rgba(2, 132, 199, 0.2) !important;
    transition: all 0.2s ease !important;
}

.obj_galley_link:hover, .galley_link:hover, a.file:hover {
    background: var(--primary-hover) !important;
    color: #ffffff !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 8px rgba(2, 132, 199, 0.3) !important;
}

.obj_galley_link.pdf::before, .galley_link.pdf::before {
    content: "📄 " !important;
}

/* --- Article Details Page --- */
.page_article, .obj_article_details {
    background: #ffffff !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--radius-lg) !important;
    padding: 2.5rem !important;
    margin-top: 1.5rem !important;
    box-shadow: var(--shadow-sm) !important;
}

.obj_article_details .main_entry {
    border-right: 1px solid #f1f5f9 !important;
    padding-right: 2rem !important;
}

.obj_article_details .item.abstract {
    background: var(--light-bg) !important;
    padding: 1.5rem !important;
    border-radius: var(--radius-lg) !important;
    border-left: 4px solid var(--primary-color) !important;
    margin-top: 1.5rem !important;
}

.obj_article_details .item.abstract h3 {
    font-size: 1.1rem !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    color: var(--primary-color) !important;
    margin-bottom: 0.75rem !important;
}

.obj_article_details .item.keywords .value span {
    display: inline-block !important;
    background: var(--primary-light) !important;
    color: var(--primary-hover) !important;
    font-size: 0.82rem !important;
    font-weight: 600 !important;
    padding: 4px 12px !important;
    border-radius: var(--radius-full) !important;
    margin-right: 6px !important;
    margin-bottom: 6px !important;
}

.obj_article_details .entry_details {
    background: #f8fafc !important;
    border-radius: var(--radius-lg) !important;
    padding: 1.5rem !important;
}

/* --- Footer Styling --- */
.pkp_structure_footer {
    background: #0f172a !important;
    color: #94a3b8 !important;
    padding: 3rem 0 !important;
    margin-top: 4rem !important;
    border-top: 1px solid #1e293b !important;
}

.pkp_structure_footer a {
    color: #cbd5e1 !important;
    text-decoration: none !important;
}

.pkp_structure_footer a:hover {
    color: #ffffff !important;
}