/* Neurok Theme - Main Stylesheet */

:root {
    --nk-primary: #1B4965;
    --nk-secondary: #5FA8D3;
    --nk-accent: #E8AA42;
    --nk-success: #62929E;
    --nk-bg: #F7F5F0;
    --nk-text: #2D3436;
    --nk-light: #BEE3DB;
    --nk-white: #FFFFFF;
    --nk-gray: #6B7280;
    --nk-border: #E5E7EB;
    --nk-font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --nk-font-heading: 'Playfair Display', Georgia, serif;
    --nk-max-width: 1200px;
    --nk-content-width: 840px;
    --nk-radius: 8px;
    --nk-shadow: 0 2px 8px rgba(0,0,0,0.08);
    --nk-shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--nk-font-body);
    color: var(--nk-text);
    background: var(--nk-bg);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--nk-primary); text-decoration: none; }
a:hover { color: var(--nk-secondary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { font-family: var(--nk-font-heading); color: var(--nk-primary); line-height: 1.3; }

/* Container */
.nk-container {
    max-width: var(--nk-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================== */
/* HEADER & NAVIGATION   */
/* ===================== */
.nk-header {
    background: var(--nk-white);
    border-bottom: 1px solid var(--nk-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.nk-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.nk-logo { flex-shrink: 0; }
.nk-logo img {
    height: 40px;
    width: auto;
}

/* Main Nav */
.nk-nav { flex: 1; }
.nk-menu {
    display: flex;
    gap: 4px;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}
.nk-menu > li {
    position: relative;
}
.nk-menu > li > a {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--nk-text);
    padding: 8px 14px;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
}
.nk-menu > li > a:hover,
.nk-menu > li:hover > a,
.nk-menu > li.current-menu-item > a {
    background: var(--nk-bg);
    color: var(--nk-primary);
}

/* Dropdown */
.nk-menu > li > .sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--nk-white);
    border: 1px solid var(--nk-border);
    border-radius: var(--nk-radius);
    box-shadow: var(--nk-shadow-hover);
    padding: 8px 0;
    z-index: 1001;
    list-style: none;
    margin: 0;
}
.nk-menu > li:hover > .sub-menu {
    display: block;
}
.nk-menu .sub-menu li a {
    display: block;
    padding: 8px 18px;
    font-size: 0.88rem;
    color: var(--nk-text);
    transition: background 0.15s, color 0.15s;
}
.nk-menu .sub-menu li a:hover {
    background: var(--nk-bg);
    color: var(--nk-primary);
}

/* Dropdown arrow indicator */
.nk-menu > li.menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 5px;
    vertical-align: middle;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
}

.nk-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* GEO Switcher */
.nk-geo-switcher {
    display: flex;
    gap: 2px;
    background: var(--nk-bg);
    border-radius: 20px;
    padding: 3px;
}
.nk-geo-switcher a {
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 4px 8px;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--nk-gray);
    transition: all 0.2s;
}
.nk-geo-switcher a.active,
.nk-geo-switcher a:hover {
    background: var(--nk-primary);
    color: var(--nk-white);
}
.nk-geo-switcher .geo-label { display: none; }
@media (min-width: 900px) {
    .nk-geo-switcher .geo-label { display: inline; }
}

/* Mobile Toggle */
.nk-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nk-mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--nk-text);
    transition: 0.3s;
}

/* Breadcrumbs */
.nk-breadcrumbs {
    padding: 16px 24px;
    max-width: var(--nk-max-width);
    margin: 0 auto;
    font-size: 0.85rem;
    color: var(--nk-gray);
}
.nk-breadcrumbs a { color: var(--nk-gray); }
.nk-breadcrumbs a:hover { color: var(--nk-primary); }
.nk-breadcrumbs .sep { margin: 0 6px; }

/* ===================== */
/* HERO                  */
/* ===================== */
.nk-hero {
    background: linear-gradient(135deg, var(--nk-primary) 0%, #2D6A8F 50%, var(--nk-success) 100%);
    color: var(--nk-white);
    padding: 80px 0;
    text-align: center;
}
.nk-hero h1 {
    font-size: 3rem;
    color: var(--nk-white);
    margin-bottom: 16px;
}
.nk-hero-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.nk-hero-geo {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.nk-hero-geo-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255,255,255,0.15);
    border-radius: 24px;
    color: var(--nk-white);
    font-weight: 600;
    font-size: 0.95rem;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: background 0.2s;
}
.nk-hero-geo-btn:hover {
    background: rgba(255,255,255,0.3);
    color: var(--nk-white);
}
.nk-hero-geo-btn .flag { font-size: 1.4rem; }

/* ===================== */
/* SECTIONS              */
/* ===================== */
.nk-section { padding: 64px 0; }
.nk-section-alt { background: var(--nk-white); }
.nk-section-title {
    font-size: 2rem;
    margin-bottom: 32px;
    text-align: center;
}

/* ===================== */
/* CARDS & GRID          */
/* ===================== */
.nk-post-grid, .nk-featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}
.nk-card {
    background: var(--nk-white);
    border-radius: var(--nk-radius);
    overflow: hidden;
    box-shadow: var(--nk-shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}
.nk-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--nk-shadow-hover);
}

/* Card image - shows topic-colored placeholder when no thumbnail */
.nk-card-image {
    display: block;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--nk-primary) 0%, var(--nk-secondary) 100%);
    min-height: 180px;
}
.nk-card-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
/* Placeholder when no image (shows gradient) */
.nk-card-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 180px;
    background: linear-gradient(135deg, var(--nk-primary) 0%, var(--nk-secondary) 100%);
    font-size: 3rem;
    color: rgba(255,255,255,0.5);
}

.nk-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.nk-card-tag, .nk-card-geo {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--nk-accent);
    margin-bottom: 8px;
}
.nk-card-title {
    font-size: 1.1rem;
    font-family: var(--nk-font-heading);
    margin-bottom: 8px;
    line-height: 1.4;
}
.nk-card-title a { color: var(--nk-primary); }
.nk-card-title a:hover { color: var(--nk-secondary); }
.nk-card-excerpt {
    font-size: 0.88rem;
    color: var(--nk-gray);
    margin-bottom: 12px;
    flex: 1;
    line-height: 1.6;
}
.nk-card-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--nk-accent);
    margin-top: auto;
}

/* ===================== */
/* TOPIC GRID            */
/* ===================== */
.nk-topic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
    gap: 16px;
}
.nk-topic-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 28px 16px;
    background: var(--nk-bg);
    border-radius: var(--nk-radius);
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--nk-border);
}
.nk-topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--nk-shadow);
    border-color: var(--nk-secondary);
}
.nk-topic-icon { font-size: 2.5rem; margin-bottom: 12px; }
.nk-topic-card h3 {
    font-size: 0.88rem;
    font-family: var(--nk-font-body);
    font-weight: 600;
    color: var(--nk-primary);
    margin-bottom: 4px;
}
.nk-topic-count {
    font-size: 0.78rem;
    color: var(--nk-gray);
}

/* ===================== */
/* GEO CARDS (Homepage)  */
/* ===================== */
.nk-geo-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}
.nk-geo-card {
    background: var(--nk-white);
    border-radius: var(--nk-radius);
    padding: 24px;
    box-shadow: var(--nk-shadow);
    border-left: 4px solid var(--nk-accent);
}
.nk-geo-card h3 { font-size: 1.15rem; margin-bottom: 12px; }
.nk-geo-card h3 a { color: var(--nk-primary); }
.nk-geo-card ul { margin-bottom: 12px; }
.nk-geo-card li {
    padding: 6px 0;
    border-bottom: 1px solid var(--nk-border);
}
.nk-geo-card li:last-child { border: none; }
.nk-geo-card li a {
    font-size: 0.88rem;
    color: var(--nk-text);
}
.nk-geo-card li a:hover { color: var(--nk-primary); }
.nk-geo-more {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--nk-accent);
    margin-top: 4px;
}

/* ===================== */
/* ABOUT SECTION         */
/* ===================== */
.nk-section-about {
    background: var(--nk-primary);
    color: var(--nk-white);
}
.nk-section-about h2 { color: var(--nk-white); }
.nk-section-about p { opacity: 0.9; max-width: 600px; }
.nk-btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--nk-accent);
    color: var(--nk-white);
    border-radius: 24px;
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: 16px;
    transition: background 0.2s;
}
.nk-btn:hover { background: #d49a35; color: var(--nk-white); }

/* ===================== */
/* ARTICLE SINGLE        */
/* ===================== */
.nk-article {
    max-width: var(--nk-content-width);
    padding-top: 32px;
    padding-bottom: 64px;
}
.nk-article-header { margin-bottom: 32px; }
.nk-article-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--nk-accent);
    margin-bottom: 12px;
}
.nk-article-title { font-size: 2.4rem; margin-bottom: 16px; }
.nk-article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--nk-gray);
    flex-wrap: wrap;
}
.nk-meta-author {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nk-meta-author img { border-radius: 50%; }
.nk-article-image {
    margin-bottom: 32px;
    border-radius: var(--nk-radius);
    overflow: hidden;
}
.nk-article-content {
    font-size: 1.05rem;
    line-height: 1.8;
}
.nk-article-content h2 {
    font-size: 1.6rem;
    margin: 40px 0 16px;
}
.nk-article-content h3 {
    font-size: 1.3rem;
    margin: 32px 0 12px;
}
.nk-article-content p { margin-bottom: 16px; }
.nk-article-content ul, .nk-article-content ol {
    margin: 16px 0;
    padding-left: 24px;
    list-style: disc;
}
.nk-article-content ol { list-style: decimal; }
.nk-article-content li { margin-bottom: 8px; }
.nk-article-content blockquote {
    border-left: 4px solid var(--nk-accent);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--nk-white);
    border-radius: 0 var(--nk-radius) var(--nk-radius) 0;
    font-style: italic;
}
.nk-article-content a { color: var(--nk-secondary); text-decoration: underline; }

/* GEO Versions in Article Footer */
.nk-geo-versions {
    margin-top: 40px;
    padding: 24px;
    background: var(--nk-white);
    border-radius: var(--nk-radius);
    border: 1px solid var(--nk-border);
}
.nk-geo-versions h3 { font-size: 1rem; margin-bottom: 12px; }
.nk-geo-links { display: flex; gap: 12px; flex-wrap: wrap; }
.nk-geo-link {
    padding: 8px 16px;
    background: var(--nk-bg);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Related Posts */
.nk-related { margin-top: 48px; }
.nk-related h3 { font-size: 1.2rem; margin-bottom: 16px; }
.nk-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.nk-related-card {
    background: var(--nk-white);
    border-radius: var(--nk-radius);
    overflow: hidden;
    box-shadow: var(--nk-shadow);
    display: flex;
    flex-direction: column;
}
.nk-related-card img {
    height: 120px;
    object-fit: cover;
}
.nk-related-card span {
    padding: 12px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--nk-primary);
}

/* ===================== */
/* PAGE                  */
/* ===================== */
.nk-page {
    max-width: var(--nk-content-width);
    padding: 48px 24px 64px;
}
.nk-page-title { font-size: 2.2rem; margin-bottom: 24px; }
.nk-page-content { font-size: 1.05rem; line-height: 1.8; }
.nk-page-content p { margin-bottom: 16px; }
.nk-page-content ul, .nk-page-content ol {
    margin: 16px 0;
    padding-left: 24px;
    list-style: disc;
}
.nk-page-content ol { list-style: decimal; }
.nk-page-content li { margin-bottom: 8px; }
.nk-page-content h2 { font-size: 1.5rem; margin: 32px 0 12px; }
.nk-page-content h3 { font-size: 1.2rem; margin: 24px 0 8px; }

/* ===================== */
/* ARCHIVE               */
/* ===================== */
.nk-archive-header {
    text-align: center;
    margin-bottom: 40px;
    padding-top: 32px;
}
.nk-archive-title { font-size: 2rem; margin-bottom: 12px; }
.nk-archive-desc { color: var(--nk-gray); max-width: 600px; margin: 0 auto; }
.nk-geo-hub-header {
    text-align: center;
    padding: 48px 0 32px;
}
.nk-content {
    padding: 32px 24px 64px;
}

/* ===================== */
/* 404                   */
/* ===================== */
.nk-404 {
    text-align: center;
    padding: 80px 24px;
}
.nk-404 h1 { font-size: 2.5rem; margin-bottom: 16px; }
.nk-404 p { margin-bottom: 24px; color: var(--nk-gray); }

/* ===================== */
/* PAGINATION            */
/* ===================== */
.nk-pagination {
    margin-top: 40px;
    text-align: center;
}
.nk-pagination .nav-links { display: flex; justify-content: center; gap: 8px; }
.nk-pagination .page-numbers {
    padding: 8px 14px;
    border-radius: var(--nk-radius);
    background: var(--nk-white);
    border: 1px solid var(--nk-border);
    font-weight: 500;
}
.nk-pagination .page-numbers.current {
    background: var(--nk-primary);
    color: var(--nk-white);
    border-color: var(--nk-primary);
}

/* ===================== */
/* FOOTER                */
/* ===================== */
.nk-footer {
    background: var(--nk-primary);
    color: rgba(255,255,255,0.8);
    padding: 64px 0 0;
}
.nk-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.nk-footer-logo {
    height: 36px;
    width: auto;
    margin-bottom: 12px;
    filter: brightness(0) invert(1);
}
.nk-footer h4 {
    color: var(--nk-white);
    font-family: var(--nk-font-body);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.nk-footer ul li { margin-bottom: 6px; }
.nk-footer a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}
.nk-footer a:hover { color: var(--nk-white); }
.nk-footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.15);
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
}

/* ===================== */
/* WP Admin Bar Fix      */
/* ===================== */
.admin-bar .nk-header {
    top: 32px;
}

/* ===================== */
/* RESPONSIVE            */
/* ===================== */
@media (max-width: 900px) {
    .nk-nav { display: none; }
    .nk-nav.active {
        display: block;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--nk-white);
        border-bottom: 1px solid var(--nk-border);
        padding: 16px 24px;
        box-shadow: var(--nk-shadow-hover);
    }
    .admin-bar .nk-nav.active { top: 104px; }
    .nk-nav.active .nk-menu {
        flex-direction: column;
        gap: 0;
    }
    .nk-nav.active .nk-menu > li > a {
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid var(--nk-border);
        border-radius: 0;
    }
    .nk-nav.active .nk-menu > li > .sub-menu {
        display: block;
        position: static;
        box-shadow: none;
        border: none;
        padding: 0 0 0 16px;
    }
    .nk-mobile-toggle { display: flex; }
    .nk-hero h1 { font-size: 2rem; }
    .nk-hero-subtitle { font-size: 1rem; }
    .nk-post-grid, .nk-featured-grid { grid-template-columns: 1fr; }
    .nk-topic-grid { grid-template-columns: repeat(2, 1fr); }
    .nk-geo-cards { grid-template-columns: 1fr; }
    .nk-footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .nk-related-grid { grid-template-columns: 1fr; }
    .nk-article-title { font-size: 1.8rem; }
    .nk-section { padding: 40px 0; }
}

@media (max-width: 480px) {
    .nk-hero { padding: 48px 0; }
    .nk-hero h1 { font-size: 1.6rem; }
    .nk-geo-switcher { padding: 2px; }
    .nk-geo-switcher a { padding: 3px 6px; font-size: 0.7rem; }
}