:root {
    --primary-dark: #123B1E;
    --primary-main: #1E5631;
    --primary-light: #4C9A2A;
    --accent-mint: #78C850;
    --bg-sage: #F4F7F4;
    --text-dark: #1F292E;
    --text-muted: #5A6B5C;
    --border-color: #D3E0D3;
    --white: #FFFFFF;
}

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

body {
    font-family: 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-sage);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden; /* Telefonda yana daşmanın qarşısını alır */
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
.site-header { background: var(--white); border-bottom: 3px solid var(--primary-main); box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.top-bar { background: var(--primary-dark); color: var(--white); font-size: 0.85rem; padding: 8px 0; }
.top-bar .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 5px; }
.main-header { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; flex-wrap: wrap; gap: 15px; }
.branding { display: flex; align-items: center; gap: 15px; }
.logo-box img { height: 50px; width: auto; border-radius: 4px; }
.title-box h1 { font-size: 1.2rem; color: var(--primary-dark); font-weight: 700; }
.title-box .subtitle { font-size: 0.78rem; color: var(--text-muted); }

.navbar { background: var(--primary-main); overflow-x: auto; }
.navbar ul { display: flex; list-style: none; white-space: nowrap; }
.navbar a { color: var(--white); text-decoration: none; padding: 12px 16px; display: block; font-weight: 600; font-size: 0.9rem; }
.navbar a:hover, .navbar a.active { background: var(--primary-dark); }

/* Hero */
.hero-banner { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-main) 100%); color: var(--white); padding: 25px 0; }
.hero-content h2 { font-size: 1.4rem; margin-bottom: 8px; }
.quick-stats { display: flex; gap: 15px; margin-top: 15px; flex-wrap: wrap; }
.stat { background: rgba(255,255,255,0.1); padding: 8px 14px; border-radius: 6px; border-left: 4px solid var(--accent-mint); flex: 1; min-width: 130px; }
.stat .num { display: block; font-size: 1.2rem; font-weight: bold; }
.stat .lbl { font-size: 0.75rem; opacity: 0.85; }

/* Layout */
.main-layout { display: grid; grid-template-columns: 1fr 300px; gap: 25px; margin: 20px 0 40px; }
.card-section { background: var(--white); border-radius: 8px; padding: 20px; border: 1px solid var(--border-color); box-shadow: 0 2px 5px rgba(0,0,0,0.02); margin-bottom: 25px; }
.section-header { border-bottom: 2px solid var(--bg-sage); padding-bottom: 10px; margin-bottom: 15px; }
.section-header h2 { color: var(--primary-dark); font-size: 1.2rem; }

/* Search Box */
.search-filter-box { background: var(--bg-sage); padding: 15px; border-radius: 6px; margin-bottom: 20px; }
.search-input-group { position: relative; margin-bottom: 12px; }
.search-input-group i { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }
.search-input-group input { width: 100%; padding: 10px 10px 10px 40px; border: 1px solid var(--border-color); border-radius: 5px; font-size: 0.9rem; }
.filter-controls { display: flex; gap: 15px; flex-wrap: wrap; }
.filter-item { flex: 1; min-width: 140px; }
.filter-item label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 5px; }
.filter-item select { width: 100%; padding: 8px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 0.9rem; }

/* Issues Grid */
.sub-section-title { margin-bottom: 12px; border-left: 4px solid var(--primary-main); padding-left: 10px; font-size: 1.1rem; }
.issues-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 15px; margin-bottom: 20px; }
.issue-card { background: var(--bg-sage); border: 1px solid var(--border-color); border-radius: 6px; padding: 12px; text-align: center; }
.issue-card img { width: 100%; height: 200px; object-fit: cover; border-radius: 4px; margin-bottom: 8px; border: 1px solid #ccc; }
.issue-card h4 { font-size: 0.95rem; color: var(--primary-dark); margin-bottom: 5px; }

/* Article Card */
.article-card { border: 1px solid var(--border-color); border-radius: 6px; padding: 15px; margin-bottom: 15px; background: var(--white); transition: 0.2s; }
.article-card:hover { box-shadow: 0 4px 12px rgba(30,86,49,0.08); border-color: var(--primary-light); }
.article-header-meta { display: flex; justify-content: space-between; font-size: 0.8rem; margin-bottom: 6px; flex-wrap: wrap; gap: 5px; }
.badge-vol { background: var(--primary-main); color: var(--white); padding: 2px 8px; border-radius: 4px; }
.badge-cat { background: var(--bg-sage); color: var(--primary-dark); padding: 2px 8px; border-radius: 4px; font-weight: 600; }
.article-title { font-size: 1.05rem; color: var(--primary-dark); margin-bottom: 6px; }
.article-authors { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 8px; font-style: italic; }
.article-abstract { font-size: 0.88rem; color: #444; margin-bottom: 10px; }
.article-footer-actions { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid #eee; padding-top: 10px; flex-wrap: wrap; gap: 10px; }
.doi-link { font-family: monospace; font-size: 0.8rem; color: var(--primary-main); text-decoration: none; word-break: break-all; }
.action-buttons { display: flex; gap: 6px; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-block; padding: 7px 14px; border-radius: 4px; font-size: 0.85rem; font-weight: 600; cursor: pointer; text-decoration: none; border: none; text-align: center; }
.btn-primary { background: var(--primary-main); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { border: 1px solid var(--primary-main); color: var(--primary-main); background: transparent; }
.btn-outline:hover { background: var(--primary-main); color: var(--white); }
.btn-sm { padding: 4px 8px; font-size: 0.78rem; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-danger { background: #d9534f; color: white; }

/* Modals */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); backdrop-filter: blur(3px); padding: 10px; overflow-y: auto; }
.modal-content { background: var(--white); margin: 5% auto; border-radius: 8px; overflow: hidden; box-shadow: 0 5px 25px rgba(0,0,0,0.2); width: 100%; }
.modal-sm { max-width: 380px; }
.modal-lg { max-width: 900px; }
.modal-xl { max-width: 1050px; }
.modal-header { padding: 12px 15px; background: var(--primary-main); color: var(--white); display: flex; justify-content: space-between; align-items: center; }
.close-btn { font-size: 1.4rem; cursor: pointer; }
.modal-body { padding: 15px; max-height: 70vh; overflow-y: auto; }
.pdf-frame-container iframe { width: 100%; height: 400px; border: 1px solid var(--border-color); }

/* Forms */
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 9px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 0.9rem; }
.form-row { display: flex; gap: 12px; flex-wrap: wrap; }
.col-md-4, .col-md-6 { flex: 1; min-width: 200px; }
.form-info-note { font-size: 0.82rem; color: var(--text-muted); background: var(--bg-sage); padding: 10px; border-radius: 4px; margin-bottom: 12px; border-left: 3px solid var(--primary-main); }

/* Admin tabs */
.admin-tabs { display: flex; gap: 8px; margin-bottom: 15px; border-bottom: 2px solid var(--border-color); padding-bottom: 8px; flex-wrap: wrap; }
.tab-btn { background: var(--bg-sage); border: 1px solid var(--border-color); padding: 7px 12px; border-radius: 4px; cursor: pointer; font-weight: 600; font-size: 0.82rem; }
.tab-btn.active { background: var(--primary-main); color: var(--white); border-color: var(--primary-main); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Editorial & Widgets */
.editorial-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 15px; }
.editor-card { background: var(--bg-sage); padding: 12px; border-radius: 6px; border-left: 3px solid var(--primary-main); }
.widget { background: var(--white); border: 1px solid var(--border-color); padding: 15px; border-radius: 8px; margin-bottom: 20px; }
.widget h3 { font-size: 1.05rem; color: var(--primary-dark); margin-bottom: 10px; border-bottom: 2px solid var(--bg-sage); padding-bottom: 6px; }
.indexing-list { list-style: none; font-size: 0.88rem; }
.indexing-list li { margin-bottom: 6px; }
.text-accent { color: var(--primary-light); }
.site-footer { background: var(--primary-dark); color: var(--white); text-align: center; padding: 15px 0; font-size: 0.82rem; }

/* Responsive Media Queries */
@media (max-width: 900px) {
    .main-layout {
        grid-template-columns: 1fr; /* Sidebar aşağı düşürülür ki telefonda sıxılmasın */
    }
}

@media (max-width: 768px) {
    body {
        font-size: 13.5px;
    }
    .container {
        padding: 0 10px;
    }
    .main-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .hero-content h2 {
        font-size: 1.25rem;
    }
    .quick-stats {
        flex-direction: column;
    }
    .filter-controls {
        flex-direction: column;
        gap: 10px;
    }
    .article-footer-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .action-buttons {
        justify-content: space-between;
    }
}