/**
 * custom.css — P4I Corporate Child Theme Custom Stylesheet
 * =========================================================================
 * Refactored by: Enterprise Architect & UI/UX Expert
 * Objective: High-performance, Mobile-Responsive, Zero-Bleed OJS 3.5 Theme
 * =========================================================================
 */

/* ─────────────────────────────────────────────────────────────────────────
   1. CORE VARIABLES & BASE DESIGN TOKENS
   ───────────────────────────────────────────────────────────────────────── */
:root {
    --p4i-primary: #0B2545;       /* Corporate Deep Navy */
    --p4i-secondary: #134074;     /* Corporate Medium Slate */
    --p4i-accent: #00b4d8;        /* Modern Cyan Accent */
    --p4i-bg-light: #EEF4F8;      /* Warm Ice-blue Background */
    --p4i-text-dark: #1E293B;     /* Deep Charcoal Slate for text */
    --p4i-text-muted: #64748B;    /* Muted Slate Gray */
    --p4i-white: #FFFFFF;
    
    --p4i-font-headings: 'Outfit', 'Segoe UI', sans-serif;
    --p4i-font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --p4i-shadow-sm: 0 2px 4px rgba(11, 37, 69, 0.04);
    --p4i-shadow-md: 0 4px 20px rgba(11, 37, 69, 0.08);
    --p4i-shadow-lg: 0 10px 30px rgba(11, 37, 69, 0.12);
    --p4i-radius-md: 10px;
    --p4i-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─────────────────────────────────────────────────────────────────────────
   2. TYPOGRAPHY ISOLATION (ZERO-BLEED ARCHITECTURE)
   Hanya berlaku di area frontend publik, tidak merusak Dashboard Admin OJS
   ───────────────────────────────────────────────────────────────────────── */
.pkp_structure_page {
    font-family: var(--p4i-font-body);
    color: var(--p4i-text-dark);
    background-color: #f8fafc;
    -webkit-font-smoothing: antialiased;
}

.pkp_structure_page h1, 
.pkp_structure_page h2, 
.pkp_structure_page h3, 
.pkp_structure_page h4, 
.pkp_structure_page h5, 
.pkp_structure_page h6 {
    font-family: var(--p4i-font-headings);
    font-weight: 700;
    color: var(--p4i-primary);
}

/* ─────────────────────────────────────────────────────────────────────────
   3. STICKY NAVIGATION (WITH MOBILE RESPONSIVENESS)
   ───────────────────────────────────────────────────────────────────────── */
.pkp_structure_head {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(19, 64, 116, 0.1);
    box-shadow: var(--p4i-shadow-sm);
    transition: var(--p4i-transition);
}

/* Memperbaiki tinggi header di Mobile agar area baca naskah lebih luas */
@media (max-width: 768px) {
    .pkp_structure_head {
        position: relative; /* Matikan sticky di mobile untuk maksimalkan viewport */
        backdrop-filter: none;
    }
}

/* Hirarki spesifik tinggi untuk mendobrak CSS bawaan OJS tanpa !important */
.pkp_structure_head .pkp_navigation_primary {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
}

.pkp_structure_head .pkp_navigation_primary > li > a {
    font-family: var(--p4i-font-headings);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--p4i-secondary);
    padding: 0.8rem 1.2rem;
    border-radius: 6px;
    transition: var(--p4i-transition);
}

.pkp_structure_head .pkp_navigation_primary > li:hover > a,
.pkp_structure_head .pkp_navigation_primary > li.current > a {
    color: var(--p4i-white);
    background-color: var(--p4i-primary);
    box-shadow: 0 4px 12px rgba(11, 37, 69, 0.15);
}

/* ─────────────────────────────────────────────────────────────────────────
   ULTIMATE HEADER FIX: UNIFIED CORPORATE NAVY
   Mendobrak CSS bawaan OJS agar kontras warna 100% aman dan elegan
   ───────────────────────────────────────────────────────────────────────── */
.pkp_structure_head {
    background-color: #0B2545 !important; /* Warna Corporate Navy P4I */
    border-bottom: 4px solid #00b4d8 !important; /* Garis aksen Cyan */
}

/* 1. Teks Judul Website (Kiri Atas) */
.pkp_site_name .is_text {
    color: #FFFFFF !important;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* 2. Menu Akun User (Kanan Atas: Login, Register) */
.pkp_navigation_user > li > a {
    color: #EEF4F8 !important; /* Ice White */
    font-weight: 500;
}
.pkp_navigation_user > li > a:hover,
.pkp_navigation_user > li > a:focus {
    color: #00b4d8 !important; /* Cyan saat disentuh */
}

/* 3. Menu Navigasi Utama (Bawah: Current, Archives, About) */
.pkp_navigation_primary {
    background-color: transparent !important; /* Menghapus blok biru norak bawaan OJS */
    padding-top: 10px;
}
.pkp_navigation_primary > li > a {
    color: #FFFFFF !important;
    font-weight: 600;
}
.pkp_navigation_primary > li > a:hover {
    color: #0B2545 !important;
    background-color: #EEF4F8 !important; /* Efek highlight blok putih */
    border-radius: 6px;
}

/* 4. Paksa semua Icon Dropdown menjadi Putih agar terlihat */
.pkp_navigation_user > li > a::before,
.pkp_navigation_primary > li > a::before,
.pkp_navigation_user > li > a::after,
.pkp_navigation_primary > li > a::after {
    filter: brightness(0) invert(1) !important; 
}

/* ─────────────────────────────────────────────────────────────────────────
   4. ARTICLE CARD & LAYOUT OPTIMIZATION
   ───────────────────────────────────────────────────────────────────────── */
.obj_article_summary {
    background: var(--p4i-white);
    border: 1px solid rgba(11, 37, 69, 0.05);
    border-radius: var(--p4i-radius-md);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--p4i-shadow-sm);
    transition: var(--p4i-transition);
    position: relative;
    overflow: hidden;
}

.obj_article_summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--p4i-primary);
    transform: scaleY(0.9);
    transition: var(--p4i-transition);
}

.obj_article_summary:hover {
    transform: translateY(-4px);
    box-shadow: var(--p4i-shadow-lg);
    border-color: rgba(11, 37, 69, 0.1);
}

.obj_article_summary:hover::before {
    transform: scaleY(1);
    background: var(--p4i-accent);
}

.obj_article_summary .title a {
    color: var(--p4i-primary);
    font-family: var(--p4i-font-headings);
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
    transition: var(--p4i-transition);
}

.obj_article_summary .title a:hover {
    color: var(--p4i-accent);
}

.obj_article_summary .authors {
    font-weight: 500;
    color: var(--p4i-secondary);
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

/* Tombol PDF Galley (Spesifisitas tinggi, Tanpa !important) */
.pkp_structure_page .obj_article_summary .galleys_links a.pdf,
.pkp_structure_page a.file.pdf {
    background-color: #dc2626; 
    color: var(--p4i-white);
    border-radius: 6px;
    font-weight: 600;
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(220, 38, 38, 0.2);
    transition: var(--p4i-transition);
    border: none;
}

.pkp_structure_page .obj_article_summary .galleys_links a.pdf:hover,
.pkp_structure_page a.file.pdf:hover {
    background-color: #b91c1c;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(220, 38, 38, 0.3);
}

/* ─────────────────────────────────────────────────────────────────────────
   5. SIDEBAR & WIDGET IMPROVEMENTS
   ───────────────────────────────────────────────────────────────────────── */
.pkp_structure_sidebar {
    background-color: var(--p4i-white);
    border-radius: var(--p4i-radius-md);
    padding: 1.5rem;
    box-shadow: var(--p4i-shadow-sm);
    border: 1px solid rgba(11, 37, 69, 0.04);
}

.pkp_structure_sidebar .block {
    margin-bottom: 2rem;
}

.pkp_structure_sidebar .block .title {
    font-family: var(--p4i-font-headings);
    font-size: 1.05rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--p4i-bg-light);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    color: var(--p4i-primary);
}

/* ─────────────────────────────────────────────────────────────────────────
   6. FOOTER LAYOUT
   ───────────────────────────────────────────────────────────────────────── */
.pkp_structure_footer {
    background-color: var(--p4i-primary);
    color: var(--p4i-white);
    padding: 4rem 2rem 2rem;
    margin-top: 5rem;
}

.pkp_structure_footer a {
    color: var(--p4i-accent);
    text-decoration: none;
    transition: var(--p4i-transition);
}

.pkp_structure_footer a:hover {
    text-decoration: underline;
    color: var(--p4i-white);
}