/* =====================================================
   ADSUJSR - MAIN STYLES
   ===================================================== */

:root {
    --primary: #4a6741;
    --primary-dark: #344d2e;
    --primary-light: #6b8f62;
    --secondary: #e07b22;
    --secondary-dark: #c0641a;
    --secondary-light: #f59a4a;
    --black: #1a1a1a;
    --dark: #2d2d2d;
    --gray-dark: #555;
    --gray: #888;
    --gray-light: #c8c8c8;
    --off-white: #f4f6f3;
    --white: #ffffff;
    --border: #d4ddd2;
    --shadow: rgba(74, 103, 65, 0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: Tahoma, 'Segoe UI', Arial, sans-serif;
    background: var(--off-white);
    color: var(--black);
    line-height: 1.7;
    font-size: 16.1px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; }
.fas, .far, .fab, .fa { font-size: 1.15em; vertical-align: middle; }

/* ===================================================
   HEADER — sticky, logos only
   =================================================== */
#site-header {
    background: var(--primary-dark);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
    border-bottom: 2px solid var(--secondary);
}

.header-top { background: var(--primary-dark); padding: 12px 0; }

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
}

.header-logo-left img,
.header-logo-right img { height: 85px; width: auto; object-fit: contain; }

.header-logo-left,
.header-logo-right {
    flex-shrink: 0;
    width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-logo-left .logo-placeholder,
.header-logo-right .logo-placeholder {
    width: 95px; height: 85px;
    background: rgba(255,255,255,0.1);
    border: 2px dashed rgba(255,255,255,0.35);
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.55); font-size: 10px;
    text-align: center; padding: 6px; line-height: 1.4;
}

.header-center { flex: 1; text-align: center; }

.journal-title {
    font-size: 23.5px; font-weight: bold; color: var(--white);
    text-transform: uppercase; letter-spacing: 1px; line-height: 1.3;
}

.journal-subtitle { font-size: 17.5px; color: rgba(255,255,255,0.75); font-style: italic; margin-top: 3px; }
.journal-issn { font-size: 14.8px; color: var(--secondary-light); margin-top: 4px; }

/* ===================================================
   NAV — separate sticky element below header
   =================================================== */
#main-nav {
    background: var(--primary);
    border-top: 1px solid var(--primary-light);
    position: fixed;
    top: 111px;
    left: 0;
    width: 100%;
    z-index: 9999;
    transition: transform .30s ease;
    transform: translateY(0);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
}

/* Desktop nav links */
.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    flex: 1;
}

.nav-links li a {
    display: block;
    padding: 12px 16px;
    color: rgba(255,255,255,0.9);
    font-size: 14.4px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s;
    border-bottom: 3px solid transparent;
}

.nav-links li a:hover,
.nav-links li a.active {
    background: var(--primary-dark);
    color: var(--secondary-light);
    border-bottom-color: var(--secondary);
}

/* Nav right */
.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    flex-shrink: 0;
}

/* Desktop search */
.nav-search { display: flex; align-items: center; }

.nav-search input {
    padding: 5px 10px; font-size: 13px;
    border: 1px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    color: #fff; border-radius: 4px 0 0 4px;
    outline: none; width: 160px;
}

.nav-search input::placeholder { color: rgba(255,255,255,0.5); }

.nav-search button {
    padding: 5px 10px; background: var(--secondary);
    color: #fff; border: none; border-radius: 0 4px 4px 0;
    cursor: pointer; font-size: 13px;
}

/* Auth buttons */
.nav-auth-btn {
    padding: 5px 16px; border-radius: 4px;
    font-size: 13px; font-weight: 600;
    transition: all 0.2s; white-space: nowrap;
}

.nav-login {
    color: rgba(255,255,255,0.85);
    border: 1px solid rgba(255,255,255,0.4);
    background: transparent;
}
.nav-login:hover { background: rgba(255,255,255,0.12); color: #fff; }

.nav-register {
    background: var(--secondary);
    color: #fff !important;
    border: 1px solid var(--secondary-dark);
}
.nav-register:hover { background: var(--secondary-dark); color: #fff; }

/* Logged-in */
.notification-bell {
    position: relative; color: rgba(255,255,255,0.85);
    font-size: 19px; padding: 6px;
}
.notif-count {
    position: absolute; top: 0; right: 0;
    background: var(--secondary); color: #fff;
    font-size: 10px; width: 16px; height: 16px;
    border-radius: 50%; display: flex;
    align-items: center; justify-content: center;
}
.btn-login {
    color: rgba(255,255,255,0.85);
    border: 1px solid rgba(255,255,255,0.4);
    padding: 5px 14px; border-radius: 4px;
    font-size: 13px; font-weight: 500; transition: all 0.2s;
}
.btn-login:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* Mobile-only elements — hidden on desktop */
.mobile-menu-btn {
    display: none;
    background: none;
    border: 1.5px solid rgba(255,255,255,0.5);
    color: #fff; padding: 6px 10px;
    border-radius: 4px; cursor: pointer; font-size: 19px;
}
.nav-mobile-search { display: none; }

/* ===================================================
   MAIN LAYOUT
   =================================================== */
#page-wrapper { max-width: 1200px; margin: 0 auto; padding: 25px 20px; }
.page-layout { display: grid; grid-template-columns: 1fr 280px; gap: 25px; align-items: start; }
.page-layout.full-width { grid-template-columns: 1fr; }
.main-content { min-width: 0; }

/* ===================================================
   SIDEBAR
   =================================================== */
.sidebar { position: sticky; top: 90px; }
.sidebar-widget {
    background: var(--white); border: 1px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: 0 0 6px 6px; margin-bottom: 20px; overflow: hidden;
}
.sidebar-widget-title {
    background: var(--primary); color: var(--white);
    padding: 10px 15px; font-size: 13.9px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.sidebar-widget-body { padding: 15px; }
.sidebar-widget-body ul { list-style: none; }
.sidebar-widget-body ul li { border-bottom: 1px solid var(--off-white); padding: 7px 0; font-size: 14.4px; }
.sidebar-widget-body ul li:last-child { border-bottom: none; }
.sidebar-widget-body ul li a { color: var(--primary-dark); font-weight: 500; }
.sidebar-widget-body ul li a:hover { color: var(--secondary); }

/* ===================================================
   JOURNAL INFO BOX
   =================================================== */
.journal-info-box {
    background: #ffffff; color: var(--black);
    padding: 35px 35px 30px 40px;
    border-radius: 6px; margin-bottom: 25px;
    border-left: 8px solid var(--primary);
    box-shadow: 0 2px 16px rgba(74,103,65,0.10);
}
.journal-info-box h1 { font-size: 27.8px; margin-bottom: 12px; color: var(--primary-dark); font-weight: bold; }
.journal-info-box p { color: var(--gray-dark); font-size: 15.4px; line-height: 1.8; margin-bottom: 12px; }
.journal-info-box .info-meta { display: flex; flex-wrap: wrap; margin-top: 18px; padding-top: 16px; border-top: 2px solid var(--off-white); }
.journal-info-box .info-meta span { font-size: 13px; color: var(--gray-dark); background: var(--off-white); padding: 5px 14px; margin-right: 8px; margin-bottom: 8px; border-radius: 3px; border-left: 3px solid var(--secondary); }
.journal-info-box .info-meta span strong { color: var(--primary-dark); }

/* ===================================================
   SECTION HEADERS
   =================================================== */
.section-header { border-left: 4px solid var(--secondary); padding-left: 12px; margin-bottom: 18px; }
.section-header h2 { font-size: 21.4px; color: var(--primary-dark); }
.section-header p { font-size: 13.9px; color: var(--gray); margin-top: 3px; }

/* ===================================================
   ARTICLE CARDS
   =================================================== */
.articles-grid { display: grid; gap: 18px; }
.article-card { background: var(--white); border: 1px solid var(--border); border-radius: 6px; padding: 20px; transition: box-shadow 0.2s, border-color 0.2s; border-left: 3px solid transparent; }
.article-card:hover { box-shadow: 0 4px 16px var(--shadow); border-left-color: var(--secondary); }
.article-card-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.article-card-meta span { font-size: 12.3px; color: var(--gray); background: var(--off-white); padding: 2px 8px; border-radius: 3px; }
.article-card-meta .section-tag { background: rgba(74,103,65,0.12); color: var(--primary-dark); font-weight: 600; }
.article-card h3 { font-size: 18.1px; color: var(--primary-dark); margin-bottom: 8px; line-height: 1.4; }
.article-card h3 a { color: var(--primary-dark); }
.article-card h3 a:hover { color: var(--secondary-dark); }
.article-card .authors { font-size: 13.9px; color: var(--gray-dark); font-style: italic; margin-bottom: 8px; }
.article-card .abstract-excerpt { font-size: 14.4px; color: var(--gray-dark); line-height: 1.6; margin-bottom: 12px; }
.article-card-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.article-card-stats { margin-left: auto; font-size: 12.9px; color: var(--gray); }

/* ===================================================
   BUTTONS
   =================================================== */
.btn { display: inline-block; padding: 7px 16px; border-radius: 4px; font-size: 13.9px; font-weight: 500; cursor: pointer; border: none; transition: all 0.2s; text-align: center; }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); }
.btn-secondary { background: var(--secondary); color: var(--white); }
.btn-secondary:hover { background: var(--secondary-dark); color: var(--white); }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); }
.btn-sm { padding: 4px 10px; font-size: 12.9px; }
.btn-lg { padding: 11px 24px; font-size: 16.1px; }
.btn-danger { background: #c0392b; color: #fff; }
.btn-danger:hover { background: #a93226; color: #fff; }
.btn-success { background: #27ae60; color: #fff; }
.btn-success:hover { background: #219150; color: #fff; }

/* ===================================================
   ISSUE COVER BOX
   =================================================== */
.current-issue-box { background: var(--white); border: 1px solid var(--border); border-radius: 6px; overflow: hidden; margin-bottom: 25px; }
.current-issue-header { background: var(--primary); color: var(--white); padding: 10px 18px; font-size: 13.9px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.current-issue-body { padding: 18px; display: flex; gap: 18px; }
.issue-cover { width: 100px; flex-shrink: 0; }
.issue-cover img { width: 100%; border: 1px solid var(--border); box-shadow: 2px 2px 8px rgba(0,0,0,0.1); }
.issue-cover .no-cover { width: 100px; height: 135px; background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.7); font-size: 11.8px; text-align: center; border-radius: 3px; }
.issue-info h3 { font-size: 17.1px; color: var(--primary-dark); margin-bottom: 5px; }
.issue-info p { font-size: 13.9px; color: var(--gray); }

/* ===================================================
   ARTICLE DETAIL
   =================================================== */
.article-detail { background: var(--white); border: 1px solid var(--border); border-radius: 6px; padding: 30px; margin-bottom: 20px; }
.article-detail .article-title { font-size: 25.7px; color: var(--primary-dark); line-height: 1.4; margin-bottom: 15px; border-bottom: 2px solid var(--off-white); padding-bottom: 15px; }
.article-detail .article-authors-list { color: var(--gray-dark); font-size: 15px; margin-bottom: 10px; }
.article-detail .article-publication-info { background: var(--off-white); padding: 12px 18px; border-radius: 4px; margin-bottom: 20px; display: flex; flex-wrap: wrap; gap: 15px; }
.article-detail .article-publication-info span { font-size: 13.9px; color: var(--gray-dark); }
.article-detail .article-publication-info span strong { color: var(--primary-dark); }
.article-detail .section-label { font-weight: 700; font-size: 13.9px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--primary); margin-bottom: 8px; margin-top: 20px; }
.article-detail .abstract-text { font-size: 15.4px; line-height: 1.8; color: var(--dark); text-align: justify; margin-bottom: 15px; border-left: 3px solid var(--secondary); padding-left: 15px; }
.keywords-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.keyword-tag { background: rgba(74,103,65,0.1); color: var(--primary-dark); border: 1px solid rgba(74,103,65,0.25); padding: 3px 12px; border-radius: 20px; font-size: 13.3px; }

/* ===================================================
   FORMS
   =================================================== */
.form-card { background: var(--white); border: 1px solid var(--border); border-radius: 6px; padding: 28px; }
.form-card h2 { font-size: 21.4px; color: var(--primary-dark); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--off-white); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14.4px; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.form-group label .required { color: #c0392b; margin-left: 3px; }
.form-control { width: 100%; padding: 9px 13px; border: 1.5px solid var(--gray-light); border-radius: 4px; font-size: 15px; font-family: Tahoma, 'Segoe UI', Arial, sans-serif; color: var(--dark); background: var(--white); transition: border-color 0.2s; outline: none; }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(74,103,65,0.12); }
textarea.form-control { min-height: 120px; resize: vertical; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23555' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 35px; }
.form-hint { font-size: 12.9px; color: var(--gray); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

/* ===================================================
   ALERTS
   =================================================== */
.alert { padding: 12px 18px; border-radius: 4px; margin-bottom: 18px; font-size: 15px; border-left: 4px solid; }
.alert-success { background: #eafaf1; color: #1e7e34; border-left-color: #27ae60; }
.alert-error, .alert-danger { background: #fdf0ef; color: #c0392b; border-left-color: #e74c3c; }
.alert-warning { background: #fef9e7; color: #856404; border-left-color: var(--secondary); }
.alert-info { background: #eaf4fb; color: #1a5276; border-left-color: #3498db; }

/* ===================================================
   BADGES
   =================================================== */
.badge { display: inline-block; padding: 3px 9px; border-radius: 12px; font-size: 12.3px; font-weight: 600; }
.badge-primary { background: var(--primary); color: #fff; }
.badge-secondary { background: var(--gray); color: #fff; }
.badge-success { background: #27ae60; color: #fff; }
.badge-danger { background: #e74c3c; color: #fff; }
.badge-warning { background: #f39c12; color: #fff; }
.badge-info { background: #3498db; color: #fff; }
.badge-orange { background: var(--secondary); color: #fff; }

/* ===================================================
   TABLES
   =================================================== */
.table-wrapper { overflow-x: auto; border-radius: 6px; border: 1px solid var(--border); }
table.data-table { width: 100%; border-collapse: collapse; background: var(--white); font-size: 14.4px; }
table.data-table th { background: var(--primary); color: var(--white); padding: 11px 14px; text-align: left; font-weight: 600; font-size: 13.3px; text-transform: uppercase; letter-spacing: 0.4px; white-space: nowrap; }
table.data-table td { padding: 10px 14px; border-bottom: 1px solid var(--off-white); vertical-align: middle; }
table.data-table tr:hover td { background: rgba(74,103,65,0.04); }
table.data-table tr:last-child td { border-bottom: none; }

/* ===================================================
   PAGINATION
   =================================================== */
.pagination { display: flex; gap: 5px; justify-content: center; margin: 25px 0; flex-wrap: wrap; }
.pagination a, .pagination span { display: block; width: 36px; height: 36px; line-height: 36px; text-align: center; border-radius: 4px; font-size: 13.9px; font-weight: 500; transition: all 0.2s; border: 1px solid var(--border); background: var(--white); color: var(--primary); }
.pagination a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination span.current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===================================================
   STATS / ANNOUNCEMENTS
   =================================================== */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; margin-bottom: 25px; }
.stat-box { background: var(--white); border: 1px solid var(--border); border-radius: 6px; padding: 18px; text-align: center; border-top: 3px solid var(--primary); }
.stat-box .stat-number { font-size: 34.2px; font-weight: bold; color: var(--primary); display: block; }
.stat-box .stat-label { font-size: 12.9px; color: var(--gray); text-transform: uppercase; letter-spacing: 0.5px; }
.announcement-item { background: var(--white); border: 1px solid var(--border); border-radius: 6px; padding: 16px 20px; margin-bottom: 12px; border-left: 3px solid var(--secondary); }
.announcement-item h4 { color: var(--primary-dark); font-size: 16.1px; margin-bottom: 6px; }
.announcement-item p { color: var(--gray-dark); font-size: 14.4px; }
.announcement-item .ann-date { font-size: 12.9px; color: var(--gray); margin-top: 8px; }

/* ===================================================
   ADMIN PANEL
   =================================================== */
.admin-layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.admin-sidebar { background: var(--primary-dark); padding: 20px 0; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.admin-sidebar .admin-brand { padding: 15px 20px 20px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 10px; }
.admin-sidebar .admin-brand span { color: var(--secondary-light); font-size: 15px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.admin-sidebar ul { list-style: none; }
.admin-sidebar ul li a { display: flex; align-items: center; gap: 10px; padding: 10px 20px; color: rgba(255,255,255,0.8); font-size: 14.4px; transition: all 0.2s; border-left: 3px solid transparent; }
.admin-sidebar ul li a:hover, .admin-sidebar ul li a.active { background: rgba(255,255,255,0.08); color: var(--white); border-left-color: var(--secondary); }
.admin-sidebar ul li.nav-section { padding: 12px 20px 5px; color: rgba(255,255,255,0.4); font-size: 11.2px; text-transform: uppercase; letter-spacing: 1px; }
.admin-main { background: var(--off-white); padding: 25px 30px; }
.admin-topbar { background: var(--white); padding: 14px 25px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; margin: -25px -30px 25px; }
.admin-topbar h1 { font-size: 19.2px; color: var(--primary-dark); }
.admin-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; margin-bottom: 25px; }
.admin-card { background: var(--white); border-radius: 6px; padding: 20px; border: 1px solid var(--border); border-left: 4px solid var(--primary); }
.admin-card.orange { border-left-color: var(--secondary); }
.admin-card.green { border-left-color: #27ae60; }
.admin-card.red { border-left-color: #e74c3c; }
.admin-card h3 { font-size: 30px; color: var(--primary-dark); margin-bottom: 4px; }
.admin-card p { font-size: 13.3px; color: var(--gray); text-transform: uppercase; letter-spacing: 0.4px; }

/* ===================================================
   FOOTER
   =================================================== */
#site-footer { background: var(--black); color: rgba(255,255,255,0.75); margin-top: 50px; }
.footer-main { max-width: 1200px; margin: 0 auto; padding: 40px 20px 30px; display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 30px; }
.footer-col h4 { color: var(--secondary-light); font-size: 13.9px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-col p { font-size: 13.9px; line-height: 1.8; color: rgba(255,255,255,0.65); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: rgba(255,255,255,0.65); font-size: 13.9px; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--secondary-light); }
.footer-col ul li a::before { content: '› '; color: var(--secondary); }
.footer-contact-info { font-size: 13.9px; color: rgba(255,255,255,0.65); line-height: 1.8; }
.footer-contact-info strong { color: rgba(255,255,255,0.85); }
.footer-bottom { background: rgba(0,0,0,0.4); padding: 14px 20px; text-align: center; }
.footer-bottom-inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-bottom p { font-size: 13.3px; color: rgba(255,255,255,0.5); }
.footer-bottom a { color: var(--secondary-light); }
.footer-license { font-size: 12.9px; color: rgba(255,255,255,0.45); }

/* ===================================================
   ADMIN EDIT BAR
   =================================================== */
.admin-edit-bar { background: #1a1a1a; border-bottom: 2px solid #e07b22; padding: 6px 20px; display: flex; align-items: center; gap: 12px; font-size: 12px; color: rgba(255,255,255,0.6); }
.admin-edit-bar a { color: #f59a4a; padding: 3px 10px; border: 1px solid rgba(224,123,34,0.5); border-radius: 3px; font-size: 11.5px; transition: all 0.2s; }
.admin-edit-bar a:hover { background: #e07b22; color: #fff; border-color: #e07b22; }
.admin-edit-bar .bar-label { color: rgba(255,255,255,0.35); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; margin-right: 4px; }
.article-edit-btn { display: inline-flex; align-items: center; gap: 4px; padding: 3px 9px; background: rgba(74,103,65,0.08); border: 1px solid rgba(74,103,65,0.25); border-radius: 3px; font-size: 11.5px; color: #4a6741; font-weight: 600; transition: all 0.2s; text-decoration: none; }
.article-edit-btn:hover { background: #4a6741; color: #fff; border-color: #4a6741; }

/* ===================================================
   UTILITIES
   =================================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 15px; } .mt-3 { margin-top: 25px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 15px; } .mb-3 { margin-bottom: 25px; }
.p-2 { padding: 15px; } .p-3 { padding: 25px; }
.d-flex { display: flex; } .gap-2 { gap: 12px; } .flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; } .justify-between { justify-content: space-between; }
.w-100 { width: 100%; }
.text-muted { color: var(--gray); font-size: 13.9px; }
.text-small { font-size: 13.3px; }
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.page-card { background: var(--white); border: 1px solid var(--border); border-radius: 6px; padding: 28px; margin-bottom: 20px; }
.d-none { display: none; }

/* ===================================================
   RESPONSIVE — 960px
   =================================================== */
@media (max-width: 960px) {
    .page-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .footer-main { grid-template-columns: 1fr 1fr; }
    .admin-layout { grid-template-columns: 1fr; }

    /* Admin sidebar — show as horizontal scroll bar on mobile */
    .admin-sidebar {
        display: block !important;
        height: auto;
        position: sticky;
        top: 0;
        z-index: 500;
        overflow-x: auto;
        overflow-y: hidden;
        width: 100%;
        padding: 0;
    }

    .admin-sidebar .admin-brand { display: none; }

    .admin-sidebar ul {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        width: max-content;
        padding: 4px 8px;
    }

    .admin-sidebar ul li.nav-section { display: none; }

    .admin-sidebar ul li a {
        padding: 8px 12px;
        font-size: 12px;
        white-space: nowrap;
        border-left: none;
        border-bottom: 3px solid transparent;
    }

    .admin-sidebar ul li a:hover,
    .admin-sidebar ul li a.active {
        border-left: none;
        border-bottom-color: var(--secondary);
        background: rgba(255,255,255,0.08);
    }

    .admin-main {
        padding: 15px;
    }

    .admin-topbar {
        margin: -15px -15px 15px;
        padding: 10px 15px;
        flex-wrap: wrap;
        gap: 8px;
    }
}

/* ===================================================
   TABLET / MOBILE — 768px
   =================================================== */
@media (max-width: 768px) {

    /* Header grid */
    .header-top .header-inner {
        display: grid;
        grid-template-columns: 60px 1fr 60px;
        gap: 6px;
        padding: 8px 12px;
    }
    .header-logo-left, .header-logo-right { width: 60px; }
    .header-logo-left img, .header-logo-right img { height: 52px; }
    .header-logo-left .logo-placeholder, .header-logo-right .logo-placeholder { width: 56px; height: 52px; font-size: 9px; }
    .journal-title    { font-size: 12.5px; letter-spacing: 0; }
    .journal-subtitle { font-size: 10px; }
    .journal-issn     { font-size: 9px; }

    /* Nav */
    .nav-inner { padding: 4px 12px; }

    /* Nav links — hidden on mobile, dropdown when .open */
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary-dark);
        z-index: 9999;
        flex-direction: column;
        margin: 0;
        padding: 0;
        width: 100%;
        box-shadow: 0 6px 16px rgba(0,0,0,0.3);
    }
    .nav-links.open { display: flex; }
    .nav-links li a {
        padding: 13px 20px;
        font-size: 14px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        display: block;
        text-transform: uppercase;
    }
    .nav-links li a:last-child { border-bottom: none; }

    /* Nav right */
    .nav-right { margin-left: auto; gap: 8px; }

    /* Hide desktop search, show mobile icon */
    .nav-search { display: none !important; }
    .nav-mobile-search {
        display: flex !important;
        align-items: center; justify-content: center;
        width: 32px; height: 32px;
        background: rgba(255,255,255,0.12);
        border: 1px solid rgba(255,255,255,0.3);
        border-radius: 4px; color: #fff;
        font-size: 15px; text-decoration: none; flex-shrink: 0;
    }

    /* Auth buttons smaller */
    .nav-auth-btn { padding: 4px 12px; font-size: 12px; }

    /* Show mobile menu button */
    .mobile-menu-btn { display: block; }

    /* Page */
    #page-wrapper { padding: 14px 10px; }
    .page-layout { grid-template-columns: 1fr; gap: 16px; }
    .form-row { grid-template-columns: 1fr; }

    /* Journal box */
    .journal-info-box { padding: 16px 14px 14px 18px; border-left-width: 5px; }
    .journal-info-box h1 { font-size: 17px; }
    .journal-info-box .info-meta span { font-size: 11px; padding: 3px 7px; margin-right: 4px; margin-bottom: 4px; }

    /* Footer */
    .footer-main { grid-template-columns: 1fr; gap: 18px; padding: 22px 14px 18px; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }

    /* Admin */
    .admin-edit-bar { flex-wrap: wrap; gap: 5px; padding: 5px 10px; font-size: 10.5px; }
    .admin-edit-bar a { font-size: 10px; padding: 2px 7px; }
    .stats-row { grid-template-columns: 1fr 1fr; }
}

/* ===================================================
   MOBILE (480px)
   =================================================== */
@media (max-width: 480px) {
    .header-top .header-inner { grid-template-columns: 48px 1fr 48px; }
    .header-logo-left, .header-logo-right { width: 48px; }
    .header-logo-left img, .header-logo-right img { height: 44px; }
    .journal-title    { font-size: 10.5px; }
    .journal-subtitle { font-size: 9.5px; }
    .journal-issn     { font-size: 8.5px; display: block; }
    .nav-auth-btn     { padding: 3px 8px; font-size: 11px; }
    .btn { font-size: 12px; padding: 6px 12px; }
    .btn-sm { font-size: 11px; padding: 4px 8px; }
}

/* ===================================================
   MOBILE STACKING — all 2-column grids
   =================================================== */
@media (max-width: 768px) {

    /* Contact page & Editorial Board — side-by-side → stack */
    .two-col-grid {
        grid-template-columns: 1fr !important;
    }

    /* Article page metrics — 3 columns → 1 column */
    .article-detail [style*="grid-template-columns:repeat(3,1fr)"],
    .article-detail [style*="repeat(3, 1fr)"] {
        grid-template-columns: 1fr !important;
    }

    /* Article page How to Cite — full width */
    .article-detail [style*="grid-template-columns:1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    /* Admin edit article — right panel stacks below */
    [style*="grid-template-columns:1fr 310px"] {
        grid-template-columns: 1fr !important;
    }

    /* Submit article form row */
    .form-row {
        grid-template-columns: 1fr !important;
    }

    /* Author rows in forms */
    .author-row [style*="grid-template-columns:1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    /* Footer */
    .footer-main {
        grid-template-columns: 1fr !important;
    }

    /* Info meta tags — wrap nicely */
    .journal-info-box .info-meta span {
        font-size: 11px;
    }

    /* Page cards padding */
    .page-card { padding: 18px 14px; }
    .form-card { padding: 18px 14px; }
    .article-detail { padding: 16px; }

    /* Article action buttons — stack */
    .article-card-actions {
        gap: 6px;
    }

    /* Section header */
    .section-header h2 { font-size: 17px; }

    /* Table overflow */
    .table-wrapper { font-size: 13px; }

    /* Keyword tags */
    .keyword-tag { font-size: 12px; padding: 3px 10px; }
}