/* =========================================================
   OJS 3.4 INTERNATIONAL PUBLISHER CUSTOM THEME
   Style: Executive Academic / High-Impact Journal
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Merriweather:ital,wght@0,300;0,400;0,700;1,300&display=swap');

:root {
    --ojs-primary: #0f2942;         /* Royal Executive Navy */
    --ojs-primary-dark: #091727;    /* Obsidian Blue */
    --ojs-secondary: #0072ce;       /* International Academic Blue */
    --ojs-accent: #e5a93c;          /* Journal Gold */
    --ojs-accent-hover: #c99028;
    --ojs-success: #10b981;         /* Open Access Green */
    --ojs-bg: #f8fafc;              /* Crisp Modern Light */
    --ojs-card-bg: #ffffff;
    --ojs-text: #1e293b;            /* Dark Slate Body Text */
    --ojs-muted: #64748b;           /* Muted Metadata Text */
    --ojs-border: #e2e8f0;          /* Clean Line Border */
    --ojs-border-focus: #0072ce;
    
    /* Shadows & Radii */
    --ojs-shadow-sm: 0 1px 3px rgba(15, 41, 66, 0.05);
    --ojs-shadow-md: 0 8px 20px -4px rgba(15, 41, 66, 0.08);
    --ojs-shadow-lg: 0 20px 30px -10px rgba(15, 41, 66, 0.12);
    --ojs-radius-sm: 6px;
    --ojs-radius-md: 10px;
    --ojs-radius-lg: 16px;
    
    --ojs-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --ojs-font-serif: 'Merriweather', Georgia, serif;
    --ojs-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================
   GLOBAL RESET & TYPOGRAPHY
   ========================================================= */

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--ojs-bg);
    color: var(--ojs-text);
    font-family: var(--ojs-font-sans);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--ojs-secondary);
    text-decoration: none;
    transition: var(--ojs-transition);
}

a:hover,
a:focus {
    color: var(--ojs-primary);
}

p {
    margin-bottom: 1.15rem;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--ojs-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

/* =========================================================
   HEADER & BRANDING
   ========================================================= */

.pkp_structure_head {
    background: linear-gradient(135deg, var(--ojs-primary-dark) 0%, var(--ojs-primary) 100%);
    color: #ffffff;
    border-bottom: 3px solid var(--ojs-accent);
    box-shadow: var(--ojs-shadow-md);
}

.pkp_head_wrapper {
    padding-top: 24px;
    padding-bottom: 20px;
}

.pkp_site_name a {
    color: #ffffff;
    font-size: 2.1rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.pkp_site_name a:hover {
    color: var(--ojs-accent);
}

.pkp_site_name .is_img img {
    max-height: 85px;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.15));
}

/* =========================================================
   USER NAVIGATION
   ========================================================= */

.pkp_navigation_user {
    margin-top: 4px;
}

.pkp_navigation_user > li > a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--ojs-radius-sm);
}

.pkp_navigation_user > li > a:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.12);
}

/* =========================================================
   PRIMARY NAVIGATION BAR
   ========================================================= */

.pkp_navigation_primary_row {
    background: rgba(9, 23, 39, 0.65);
    backdrop-filter: blur(8px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.pkp_navigation_primary {
    display: flex;
    align-items: center;
    gap: 2px;
}

.pkp_navigation_primary > li > a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-size: 0.92rem;
    padding: 14px 18px;
    border-bottom: 3px solid transparent;
    transition: var(--ojs-transition);
}

.pkp_navigation_primary > li > a:hover,
.pkp_navigation_primary > li > a:focus,
.pkp_navigation_primary > li > a[aria-current="page"] {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    border-bottom-color: var(--ojs-accent);
}

/* Navigation Dropdown */

.pkp_navigation_primary .dropdown-menu {
    background: var(--ojs-card-bg);
    border: 1px solid var(--ojs-border);
    border-radius: 0 0 var(--ojs-radius-md) var(--ojs-radius-md);
    box-shadow: var(--ojs-shadow-lg);
    padding: 10px;
}

.pkp_navigation_primary .dropdown-menu a {
    color: var(--ojs-text);
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: var(--ojs-radius-sm);
    padding: 10px 16px;
}

.pkp_navigation_primary .dropdown-menu a:hover {
    color: var(--ojs-secondary);
    background: var(--ojs-bg);
}

/* =========================================================
   MAIN CONTENT AREA
   ========================================================= */

.pkp_structure_content {
    min-height: 600px;
    padding-top: 40px;
    padding-bottom: 60px;
}

.page {
    background: var(--ojs-card-bg);
    border: 1px solid var(--ojs-border);
    border-radius: var(--ojs-radius-lg);
    box-shadow: var(--ojs-shadow-sm);
    padding: 36px;
}

/* Page Headers */

.page-header h1,
.pkp_page_index h1 {
    font-size: 1.85rem;
    position: relative;
    margin-bottom: 30px;
    padding-bottom: 16px;
    color: var(--ojs-primary);
}

.page-header h1::after,
.pkp_page_index h1::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 64px;
    height: 4px;
    background: var(--ojs-accent);
    border-radius: 4px;
}

/* =========================================================
   HOMEPAGE & CAROUSEL / BANNER
   ========================================================= */

.pkp_page_index .homepage_image {
    margin-bottom: 35px;
    overflow: hidden;
    border-radius: var(--ojs-radius-lg);
    box-shadow: var(--ojs-shadow-md);
}

.pkp_page_index .homepage_image img {
    width: 100%;
    max-height: 380px;
    object-fit: cover;
}

.pkp_page_index .additional_content {
    background: var(--ojs-card-bg);
    border: 1px solid var(--ojs-border);
    border-radius: var(--ojs-radius-lg);
    box-shadow: var(--ojs-shadow-sm);
    padding: 36px;
    margin-bottom: 35px;
}

/* =========================================================
   ARTICLE LISTINGS & ISSUE CARDS
   ========================================================= */

.obj_issue_summary,
.journal_index {
    background: var(--ojs-card-bg);
    border: 1px solid var(--ojs-border);
    border-radius: var(--ojs-radius-md);
    box-shadow: var(--ojs-shadow-sm);
    padding: 28px;
    margin-bottom: 24px;
    transition: var(--ojs-transition);
}

.obj_issue_summary:hover,
.journal_index:hover {
    transform: translateY(-3px);
    box-shadow: var(--ojs-shadow-md);
    border-color: #cbd5e1;
}

/* Article Item Container */

.obj_article_summary {
    position: relative;
    padding: 24px 0;
    border-bottom: 1px solid var(--ojs-border);
    transition: var(--ojs-transition);
}

.obj_article_summary:last-child {
    border-bottom: none;
}

.obj_article_summary .title {
    font-family: var(--ojs-font-sans);
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 8px;
}

.obj_article_summary .title a {
    color: var(--ojs-primary);
}

.obj_article_summary .title a:hover {
    color: var(--ojs-secondary);
}

.obj_article_summary .meta {
    color: var(--ojs-muted);
    font-size: 0.88rem;
    margin-bottom: 12px;
}

.obj_article_summary .authors {
    font-weight: 500;
    color: var(--ojs-text);
}

/* DOI Badge Styling */

.pub_id.doi {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ojs-muted);
    margin-top: 6px;
    margin-bottom: 12px;
}

.pub_id.doi a {
    color: var(--ojs-muted);
    background: var(--ojs-bg);
    border: 1px solid var(--ojs-border);
    padding: 2px 8px;
    border-radius: 4px;
}

.pub_id.doi a:hover {
    color: var(--ojs-secondary);
    border-color: var(--ojs-secondary);
}

/* Galley Links / PDF Buttons */

.obj_galley_link {
    display: inline-flex;
    align-items: center;
    background: #f1f5f9;
    color: var(--ojs-primary) !important;
    border: 1px solid var(--ojs-border);
    font-size: 0.82rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: var(--ojs-radius-sm);
    margin-right: 8px;
    margin-top: 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    transition: var(--ojs-transition);
}

.obj_galley_link:hover {
    background: var(--ojs-secondary);
    color: #ffffff !important;
    border-color: var(--ojs-secondary);
    box-shadow: 0 4px 10px rgba(0, 114, 206, 0.2);
}

.obj_galley_link.pdf {
    background: #fef2f2;
    color: #991b1b !important;
    border-color: #fecaca;
}

.obj_galley_link.pdf:hover {
    background: #dc2626;
    color: #ffffff !important;
    border-color: #dc2626;
    box-shadow: 0 4px 10px rgba(220, 38, 38, 0.2);
}

/* =========================================================
   ARTICLE LANDING PAGE (DETAILS)
   ========================================================= */

.page_article {
    background: var(--ojs-card-bg);
}

.page_article .item.authors {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--ojs-primary);
    margin-bottom: 20px;
}

.page_article .item.abstract {
    background: var(--ojs-bg);
    border-left: 4px solid var(--ojs-secondary);
    padding: 24px;
    border-radius: 0 var(--ojs-radius-md) var(--ojs-radius-md) 0;
    margin: 28px 0;
}

.page_article .item.abstract h3 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ojs-muted);
    margin-bottom: 12px;
}

.page_article .item.abstract p {
    font-family: var(--ojs-font-serif);
    font-size: 0.98rem;
    color: #334155;
    line-height: 1.8;
}

.page_article .item.keywords .label {
    font-weight: 700;
    color: var(--ojs-primary);
}

.page_article .item.keywords .value {
    color: var(--ojs-muted);
}

/* =========================================================
   SIDEBAR & WIDGETS
   ========================================================= */

.pkp_structure_sidebar {
    padding-left: 20px;
}

.pkp_block {
    background: var(--ojs-card-bg);
    border: 1px solid var(--ojs-border);
    border-radius: var(--ojs-radius-md);
    box-shadow: var(--ojs-shadow-sm);
    padding: 22px;
    margin-bottom: 24px;
}

.pkp_block .title {
    color: var(--ojs-primary);
    font-size: 1.05rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 2px solid var(--ojs-accent);
    padding-bottom: 10px;
    margin-bottom: 16px;
}

/* =========================================================
   BUTTONS & CALL TO ACTIONS
   ========================================================= */

.cmp_button,
button,
input[type="submit"],
input[type="button"],
a.cmp_button {
    background: var(--ojs-primary);
    border: none;
    border-radius: var(--ojs-radius-sm);
    color: #ffffff !important;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 10px 20px;
    display: inline-block;
    cursor: pointer;
    box-shadow: var(--ojs-shadow-sm);
    transition: var(--ojs-transition);
}

.cmp_button:hover,
button:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
a.cmp_button:hover {
    background: var(--ojs-secondary);
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 114, 206, 0.25);
}

.cmp_button_wire,
a.cmp_button_wire {
    background: transparent;
    border: 2px solid var(--ojs-secondary);
    color: var(--ojs-secondary) !important;
}

.cmp_button_wire:hover,
a.cmp_button_wire:hover {
    background: var(--ojs-secondary);
    color: #ffffff !important;
}

/* Make Make a Submission button stand out */
.pkp_block.block_make_submission a {
    display: block;
    text-align: center;
    background: linear-gradient(135deg, var(--ojs-secondary), #00569e);
    color: #ffffff !important;
    font-weight: 700;
    padding: 12px 18px;
    border-radius: var(--ojs-radius-md);
    box-shadow: 0 4px 12px rgba(0, 114, 206, 0.2);
}

.pkp_block.block_make_submission a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(0, 114, 206, 0.35);
}

/* =========================================================
   FORMS & INPUT FIELDS
   ========================================================= */

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
    background: #ffffff;
    border: 1px solid var(--ojs-border);
    border-radius: var(--ojs-radius-sm);
    color: var(--ojs-text);
    font-size: 0.95rem;
    padding: 10px 14px;
    width: 100%;
    transition: var(--ojs-transition);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--ojs-border-focus);
    box-shadow: 0 0 0 3px rgba(0, 114, 206, 0.15);
    outline: none;
}

/* Search Field */

.cmp_search {
    background: #ffffff;
    border: 1px solid var(--ojs-border);
    border-radius: var(--ojs-radius-md);
    padding: 4px;
    box-shadow: var(--ojs-shadow-sm);
}

.cmp_search input {
    border: none;
    box-shadow: none;
}

.cmp_search button {
    border-radius: var(--ojs-radius-sm);
}

/* =========================================================
   BREADCRUMBS
   ========================================================= */

.cmp_breadcrumbs {
    color: var(--ojs-muted);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.cmp_breadcrumbs a {
    color: var(--ojs-muted);
}

.cmp_breadcrumbs a:hover {
    color: var(--ojs-secondary);
}

/* =========================================================
   TABLES & NOTIFICATIONS
   ========================================================= */

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
    background: #ffffff;
    border-radius: var(--ojs-radius-md);
    overflow: hidden;
    border: 1px solid var(--ojs-border);
}

thead th {
    background: var(--ojs-primary);
    color: #ffffff;
    font-weight: 600;
    padding: 14px;
    text-align: left;
}

tbody td {
    padding: 12px 14px;
    border-top: 1px solid var(--ojs-border);
}

tbody tr:nth-child(even) {
    background: var(--ojs-bg);
}

.notification {
    border: none;
    border-left: 4px solid var(--ojs-secondary);
    border-radius: var(--ojs-radius-sm);
    box-shadow: var(--ojs-shadow-sm);
    background: #ffffff;
    padding: 16px 20px;
    margin-bottom: 20px;
}

.notification.success { border-left-color: var(--ojs-success); }
.notification.warning { border-left-color: var(--ojs-accent); }
.notification.error { border-left-color: #ef4444; }

/* =========================================================
   FOOTER
   ========================================================= */

.pkp_structure_footer_wrapper {
    background: var(--ojs-primary-dark);
    border-top: 4px solid var(--ojs-accent);
    color: rgba(255, 255, 255, 0.75);
    padding: 50px 0 30px;
}

.pkp_structure_footer {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9rem;
}

.pkp_structure_footer a {
    color: #ffffff;
}

.pkp_structure_footer a:hover {
    color: var(--ojs-accent);
}

.pkp_brand_footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 35px;
    padding-top: 25px;
}

/* =========================================================
   RESPONSIVE DESIGN (MOBILE & TABLET)
   ========================================================= */

@media (max-width: 991px) {
    .pkp_site_name a {
        font-size: 1.6rem;
    }

    .pkp_navigation_primary {
        display: block;
    }

    .pkp_navigation_primary > li > a {
        padding: 12px 16px;
    }

    .pkp_structure_sidebar {
        padding-left: 0;
        margin-top: 35px;
    }

    .page {
        padding: 24px;
    }
}

@media (max-width: 600px) {
    body {
        font-size: 14px;
    }

    .pkp_site_name a {
        font-size: 1.3rem;
    }

    .page-header h1,
    .pkp_page_index h1 {
        font-size: 1.4rem;
    }

    .obj_issue_summary,
    .journal_index,
    .pkp_block {
        padding: 18px;
    }

    .cmp_button,
    button,
    input[type="submit"] {
        width: 100%;
    }
}