/* hub.css — shared styling for Neon Pac-Man content hub (article) pages.
   Mirrors the neon/cyberpunk identity of index.html without the game engine. */

:root {
    --cyan: #00FFFF;
    --magenta: #FF00FF;
    --green: #00FF00;
    --bg-dark: #0a0a0f;
    --wall-color: #1a1a2e;
    --warning: #FF3366;
    --gold: #FFD700;
    --white: #FFFFFF;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Orbitron', sans-serif;
    background: var(--bg-dark);
    color: var(--white);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Static starfield (pure CSS, no JS) */
body::before {
    content: '';
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image:
        radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 70% 60%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 40% 80%, rgba(0,255,255,0.5), transparent),
        radial-gradient(1px 1px at 85% 22%, rgba(255,0,255,0.5), transparent),
        radial-gradient(1px 1px at 55% 12%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 12% 72%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 90% 85%, rgba(0,255,255,0.4), transparent);
    background-repeat: no-repeat;
    opacity: 0.7;
}
body::after {
    content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background:
        radial-gradient(circle at 50% -10%, rgba(255,0,255,0.10), transparent 60%),
        radial-gradient(circle at 50% 110%, rgba(0,255,255,0.08), transparent 60%);
}
.top-nav, main, .site-footer { position: relative; z-index: 1; }

/* ==================== NAV ==================== */
.top-nav {
    position: sticky; top: 0; z-index: 50;
    width: 100%;
    display: flex; align-items: center; justify-content: center;
    gap: clamp(8px, 3vw, 30px);
    padding: 12px 20px;
    background: rgba(10,10,15,0.82);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(0,255,255,0.25);
    flex-wrap: wrap;
}
.top-nav .brand {
    font-family: 'Orbitron', sans-serif; font-weight: 900;
    color: var(--cyan); letter-spacing: 2px; font-size: 1rem;
    text-shadow: 0 0 10px var(--cyan); white-space: nowrap; text-decoration: none;
}
.top-nav .nav-links { display: flex; gap: clamp(8px, 3vw, 26px); }
.top-nav a {
    font-family: 'Share Tech Mono', monospace;
    color: rgba(255,255,255,0.75); text-decoration: none;
    font-size: 0.85rem; letter-spacing: 1px;
    transition: color 0.2s, text-shadow 0.2s;
}
.top-nav a:hover, .top-nav a[aria-current="page"] { color: var(--cyan); text-shadow: 0 0 8px var(--cyan); }
.top-nav a { position: relative; padding-bottom: 3px; }
.top-nav a::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
    background: var(--cyan); box-shadow: 0 0 6px var(--cyan);
    transform: scaleX(0); transform-origin: center; transition: transform 0.25s;
}
.top-nav a:hover::after, .top-nav a[aria-current="page"]::after { transform: scaleX(1); }
/* Mobile: keep nav as a horizontal scroll strip instead of hiding it */
@media (max-width: 600px) {
    .top-nav { flex-wrap: nowrap; gap: 0; padding: 10px 12px; justify-content: flex-start; }
    .top-nav .brand { flex: 0 0 auto; margin-right: 14px; }
    .top-nav .nav-links {
        flex: 1 1 auto; flex-wrap: nowrap; overflow-x: auto; gap: 16px;
        -webkit-overflow-scrolling: touch; scrollbar-width: none;
        padding-bottom: 2px; mask-image: linear-gradient(90deg, transparent 0, #000 12px, #000 calc(100% - 18px), transparent 100%);
    }
    .top-nav .nav-links::-webkit-scrollbar { display: none; }
    .top-nav .nav-links a { white-space: nowrap; flex: 0 0 auto; }
}

/* ==================== BREADCRUMB ==================== */
.crumbs {
    max-width: 800px; margin: 18px auto 0; padding: 0 20px;
    font-family: 'Share Tech Mono', monospace; font-size: 0.78rem;
    color: rgba(255,255,255,0.55); letter-spacing: 1px;
}
.crumbs a { color: rgba(0,255,255,0.75); text-decoration: none; }
.crumbs a:hover { text-shadow: 0 0 6px var(--cyan); }

/* ==================== PAGE HERO ==================== */
.page-hero { max-width: 800px; margin: 14px auto 0; padding: 24px 20px 0; text-align: center; }
.page-hero .badge {
    display: inline-block; font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem; letter-spacing: 3px; color: var(--magenta);
    border: 1px solid var(--magenta); border-radius: 20px; padding: 5px 14px; margin-bottom: 16px;
    text-shadow: 0 0 6px var(--magenta); box-shadow: 0 0 12px rgba(255,0,255,0.25);
}
.page-hero h1 {
    font-family: 'Orbitron', sans-serif; font-weight: 900;
    font-size: clamp(1.6rem, 5vw, 2.4rem); color: var(--cyan);
    text-shadow: 0 0 12px var(--cyan); letter-spacing: 2px; line-height: 1.2;
}
.page-hero p.lead {
    font-family: 'Share Tech Mono', monospace; font-size: 1rem; line-height: 1.7;
    color: rgba(255,255,255,0.8); max-width: 660px; margin: 14px auto 0;
}

/* ==================== ARTICLE ==================== */
.article-section {
    max-width: 800px; margin: 30px auto; padding: 30px;
    background: linear-gradient(180deg, rgba(26,26,46,0.95) 0%, rgba(10,10,15,0.95) 100%);
    border: 2px solid var(--magenta); border-radius: 15px;
    box-shadow: 0 0 30px rgba(255,0,255,0.3);
}
.article-section h2 {
    font-size: 1.8rem; color: var(--cyan); text-shadow: 0 0 10px var(--cyan);
    margin-bottom: 20px; text-align: center; letter-spacing: 3px;
}
.article-section h3 {
    font-size: 1.2rem; color: var(--magenta); margin: 25px 0 15px; text-shadow: 0 0 8px var(--magenta);
}
.article-section p {
    font-family: 'Share Tech Mono', monospace; font-size: 1rem; line-height: 1.8;
    color: rgba(255,255,255,0.85); margin-bottom: 15px; text-align: justify;
}
.article-section a { color: var(--cyan); text-decoration: none; border-bottom: 1px dotted rgba(0,255,255,0.5); }
.article-section a:hover { text-shadow: 0 0 6px var(--cyan); }
.article-section ul { list-style: none; padding-left: 0; }
.article-section ul li {
    font-family: 'Share Tech Mono', monospace; font-size: 0.95rem; line-height: 1.6;
    color: rgba(255,255,255,0.8); margin-bottom: 10px; padding-left: 25px; position: relative;
}
.article-section ul li::before { content: '>'; position: absolute; left: 0; color: var(--cyan); text-shadow: 0 0 5px var(--cyan); }
.highlight { color: var(--cyan); text-shadow: 0 0 5px var(--cyan); }
.highlight-magenta { color: var(--magenta); text-shadow: 0 0 5px var(--magenta); }
.highlight-gold { color: var(--gold); text-shadow: 0 0 5px var(--gold); }

/* numbered steps */
.article-section ol.steps { list-style: none; counter-reset: step; padding-left: 0; }
.article-section ol.steps li {
    font-family: 'Share Tech Mono', monospace; font-size: 0.95rem; line-height: 1.7;
    color: rgba(255,255,255,0.85); margin-bottom: 12px; padding: 3px 0 3px 50px; position: relative; min-height: 34px;
}
.article-section ol.steps li::before {
    counter-increment: step; content: counter(step);
    position: absolute; left: 0; top: 0; width: 34px; height: 34px; line-height: 34px; text-align: center;
    border-radius: 50%; background: rgba(255,0,255,0.12); border: 1px solid var(--magenta);
    color: var(--magenta); text-shadow: 0 0 6px var(--magenta); font-weight: bold;
}

/* data table */
.data-table { width: 100%; border-collapse: collapse; margin: 8px 0 22px; font-family: 'Share Tech Mono', monospace; font-size: 0.92rem; }
.data-table th, .data-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid rgba(255,0,255,0.22); color: rgba(255,255,255,0.82); vertical-align: top; }
.data-table th { color: var(--cyan); text-shadow: 0 0 5px var(--cyan); letter-spacing: 1px; border-bottom: 2px solid rgba(0,255,255,0.5); }
.data-table tr:last-child td { border-bottom: none; }

kbd {
    display: inline-block; font-family: 'Share Tech Mono', monospace; font-size: 0.85rem;
    background: rgba(0,255,255,0.08); border: 1px solid var(--cyan); border-radius: 5px;
    padding: 1px 8px; margin: 2px; color: var(--cyan); text-shadow: 0 0 4px var(--cyan); white-space: nowrap;
}

/* ==================== FAQ ==================== */
.faq-wrap { max-width: 800px; margin: 30px auto; padding: 0 20px; }
.faq-wrap > h2 {
    font-family: 'Orbitron', sans-serif; font-weight: 900; font-size: clamp(1.4rem, 4vw, 1.9rem);
    text-align: center; color: var(--cyan); text-shadow: 0 0 12px var(--cyan); letter-spacing: 3px; margin-bottom: 24px;
}
.faq-item { border: 1px solid rgba(255,0,255,0.2); border-radius: 10px; margin-bottom: 12px; overflow: hidden; background: rgba(26,26,46,0.5); }
.faq-q {
    width: 100%; text-align: left; cursor: pointer;
    font-family: 'Orbitron', sans-serif; font-weight: 700; font-size: 0.95rem;
    color: var(--cyan); background: transparent; border: none;
    padding: 16px 18px; display: flex; justify-content: space-between; align-items: center; gap: 12px; letter-spacing: 1px;
}
.faq-q .chev { transition: transform 0.3s; color: var(--magenta); }
.faq-item.open .faq-q .chev { transform: rotate(180deg); }
.faq-a {
    max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease;
    font-family: 'Share Tech Mono', monospace; font-size: 0.9rem; line-height: 1.7;
    color: rgba(255,255,255,0.8); padding: 0 18px;
}
.faq-item.open .faq-a { max-height: 360px; padding: 0 18px 18px; }

/* ==================== RELATED / INTERLINK ==================== */
.related { max-width: 800px; margin: 30px auto; padding: 24px 20px; }
.related > h2 {
    font-family: 'Orbitron', sans-serif; font-weight: 900; font-size: 1.3rem; text-align: center;
    color: var(--cyan); text-shadow: 0 0 12px var(--cyan); letter-spacing: 3px; margin-bottom: 20px;
}
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.related-card {
    display: block; background: linear-gradient(180deg, rgba(26,26,46,0.9), rgba(10,10,15,0.9));
    border: 1px solid rgba(0,255,255,0.2); border-radius: 12px; padding: 20px; text-decoration: none;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.related-card:hover { transform: translateY(-6px); border-color: var(--cyan); box-shadow: 0 8px 30px rgba(0,255,255,0.2); }
.related-card .r-ico { font-size: 1.6rem; margin-bottom: 10px; filter: drop-shadow(0 0 8px var(--cyan)); }
.related-card h3 { font-family: 'Orbitron', sans-serif; color: var(--magenta); font-size: 0.95rem; letter-spacing: 1px; margin-bottom: 8px; text-shadow: 0 0 8px var(--magenta); }
.related-card p { font-family: 'Share Tech Mono', monospace; font-size: 0.82rem; line-height: 1.6; color: rgba(255,255,255,0.75); }

/* ==================== CTA BUTTON ==================== */
.cta-row { text-align: center; margin: 30px auto; }
.btn {
    display: inline-block; font-family: 'Orbitron', sans-serif; font-weight: 700; letter-spacing: 2px;
    cursor: pointer; text-decoration: none; color: var(--bg-dark); background: var(--cyan); border: none;
    border-radius: 8px; padding: 13px 28px; font-size: 0.9rem; box-shadow: 0 0 18px rgba(0,255,255,0.5);
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 0 28px rgba(0,255,255,0.8); }
.btn.magenta { background: var(--magenta); color: #fff; box-shadow: 0 0 18px rgba(255,0,255,0.5); }

/* ==================== FOOTER ==================== */
.site-footer { margin-top: 60px; border-top: 1px solid rgba(0,255,255,0.2); background: rgba(5,5,10,0.6); padding: 40px 20px 28px; }
.footer-inner { max-width: 900px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
.site-footer .f-brand { font-family: 'Orbitron', sans-serif; font-weight: 900; font-size: 1.2rem; color: var(--cyan); text-shadow: 0 0 10px var(--cyan); letter-spacing: 2px; margin-bottom: 10px; }
.site-footer p, .site-footer a, .site-footer li { font-family: 'Share Tech Mono', monospace; font-size: 0.85rem; color: rgba(255,255,255,0.7); line-height: 1.9; text-decoration: none; }
.site-footer h4 { font-family: 'Orbitron', sans-serif; color: var(--magenta); font-size: 0.85rem; letter-spacing: 2px; margin-bottom: 8px; }
.site-footer ul { list-style: none; }
.site-footer a:hover { color: var(--cyan); text-shadow: 0 0 6px var(--cyan); }
.footer-bottom { max-width: 900px; margin: 28px auto 0; padding-top: 18px; border-top: 1px solid rgba(255,255,255,0.08); text-align: center; font-family: 'Share Tech Mono', monospace; font-size: 0.78rem; color: rgba(255,255,255,0.5); }
@media (max-width: 680px) { .footer-inner { grid-template-columns: 1fr; gap: 22px; text-align: center; } .site-footer ul { padding: 0; } }

@media (max-width: 768px) {
    .article-section { margin: 20px 10px; padding: 20px; }
    .article-section h2 { font-size: 1.4rem; }
    .article-section p, .article-section ul li { font-size: 0.9rem; }
    .data-table { font-size: 0.82rem; }
    .data-table th, .data-table td { padding: 8px 8px; }
}

/* ==================== DESIGN POLISH ==================== */
/* Animated hero: gentle title glow + badge pulse */
@keyframes heroGlow {
    0%, 100% { text-shadow: 0 0 12px var(--cyan); }
    50% { text-shadow: 0 0 22px var(--cyan), 0 0 36px rgba(0,255,255,0.5); }
}
@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 12px rgba(255,0,255,0.25); }
    50% { box-shadow: 0 0 20px rgba(255,0,255,0.55); }
}
.page-hero h1 { animation: heroGlow 4s ease-in-out infinite; }
.page-hero .badge { animation: badgePulse 3s ease-in-out infinite; }

/* Neon divider under article section headings */
.article-section h2 { position: relative; padding-bottom: 14px; }
.article-section h2::after {
    content: ''; display: block; width: 70px; height: 2px; margin: 12px auto 0;
    background: linear-gradient(90deg, transparent, var(--cyan), var(--magenta), transparent);
    box-shadow: 0 0 10px rgba(0,255,255,0.6); border-radius: 2px;
}

/* Accessible keyboard focus rings */
a:focus-visible, button:focus-visible, .btn:focus-visible, .faq-q:focus-visible {
    outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px;
}

/* Smoother related-card lift already defined; add subtle inner glow on hover */
.related-card:hover h3 { text-shadow: 0 0 12px var(--magenta); }

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; scroll-behavior: auto !important; }
    .related-card, .btn, .top-nav a::after { transition: none !important; }
}