/*
Theme Name: NEXUSAI
Theme URI: https://getnexusai.online
Author: NEXUSAI
Author URI: https://getnexusai.online
Description: Cyberpunk dark blog theme. Neon red accents, glass cards, grid background, Syne + DM Mono typography.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GPL-2.0-or-later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: nexusai
Tags: dark, custom-colors, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, blog
*/

:root {
  --bg: #050508;
  --bg-elev: #0b0b12;
  --accent: #e8001d;
  --accent-glow: rgba(232, 0, 29, 0.55);
  --accent-soft: rgba(232, 0, 29, 0.12);
  --text: #e8e8ee;
  --text-dim: #8d8da0;
  --border: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(20, 20, 28, 0.5);
  --glass-border: rgba(232, 0, 29, 0.2);
  --grid-color: rgba(232, 0, 29, 0.045);
  --font-display: 'Syne', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'JetBrains Mono', ui-monospace, monospace;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { max-width: 100%; height: auto; display: block; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  min-height: 100vh;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 56px 56px;
  background-attachment: fixed;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(232, 0, 29, 0.10), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.2;
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s, text-shadow 0.15s; }
a:hover, a:focus-visible { text-shadow: 0 0 8px var(--accent-glow); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.container {
  width: min(100% - 2.4rem, 1200px);
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

/* ---------- Navbar ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 8, 0.75);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
  gap: 1.5rem;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
}
.site-logo:hover { text-shadow: none; }
.site-logo__hex {
  width: 30px;
  height: 30px;
  filter: drop-shadow(0 0 6px var(--accent-glow));
  flex-shrink: 0;
}
.site-logo__hex path { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.site-logo__name { letter-spacing: 0.04em; }
.site-logo__name span { color: var(--accent); }

.nav__list {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__list a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
}
.nav__list a:hover,
.nav__list .current-menu-item > a {
  color: var(--accent);
  text-shadow: 0 0 6px var(--accent-glow);
}

/* ---------- Page hero ---------- */
.page-hero {
  padding-block: 4.5rem 3rem;
  text-align: center;
}
.page-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.page-hero__title {
  font-size: clamp(2.2rem, 5.2vw, 3.8rem);
  margin: 0;
}
.page-hero__lead {
  margin: 1rem auto 0;
  color: var(--text-dim);
  max-width: 60ch;
  font-size: 1.05rem;
}

/* ---------- Card grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  padding-bottom: 3rem;
}

.post-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 16px 50px -16px var(--accent-glow);
}
.post-card__media-link { display: block; }
.post-card__media {
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, #20000a, #050508),
    radial-gradient(circle at 70% 30%, var(--accent-soft), transparent 60%);
  position: relative;
  overflow: hidden;
}
.post-card__media img { width: 100%; height: 100%; object-fit: cover; }
.post-card__body {
  padding: 1.4rem 1.4rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  flex: 1;
}
.post-card__meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.post-card__meta::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  border-radius: 1px;
}
.post-card__title {
  font-size: 1.25rem;
  line-height: 1.3;
  margin: 0;
}
.post-card__title a { color: var(--text); }
.post-card__title a:hover { color: var(--accent); }
.post-card__excerpt {
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.6;
}
.post-card__cta {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
}

/* ---------- Pagination ---------- */
.nav-links {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding-block: 2rem 4rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.nav-links .page-numbers {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
}
.nav-links .page-numbers:hover,
.nav-links .current {
  color: var(--accent);
  border-color: var(--accent);
  text-shadow: 0 0 6px var(--accent-glow);
}

/* ---------- Single article ---------- */
.article {
  padding-block: 3rem 2rem;
  max-width: 760px;
  margin-inline: auto;
}
.article__header { text-align: center; margin-bottom: 2.5rem; }
.article__title { font-size: clamp(2rem, 4.4vw, 3.2rem); margin: 0.4rem 0 0; }
.article__meta {
  margin-top: 1rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.article__featured {
  margin: 0 0 2rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px -20px var(--accent-glow);
}
.article__content { font-size: 1.05rem; line-height: 1.8; color: #d6d6dc; }
.article__content > * + * { margin-top: 1.2rem; }
.article__content h1, .article__content h2, .article__content h3, .article__content h4 {
  margin-top: 2.4rem; margin-bottom: 0.8rem;
}
.article__content h2 { font-size: 1.7rem; }
.article__content h3 { font-size: 1.3rem; }
.article__content a { color: var(--accent); border-bottom: 1px solid var(--accent-soft); padding-bottom: 1px; }
.article__content a:hover { border-bottom-color: var(--accent); }
.article__content blockquote {
  border-left: 3px solid var(--accent);
  padding: 1rem 1.4rem;
  background: var(--glass-bg);
  margin: 1.6rem 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text);
}
.article__content code {
  font-family: var(--font-mono);
  background: var(--bg-elev);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--accent);
  border: 1px solid var(--border);
}
.article__content pre {
  background: var(--bg-elev);
  padding: 1.2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow-x: auto;
}
.article__content pre code { background: transparent; padding: 0; border: 0; color: var(--text); }
.article__content ul, .article__content ol { padding-left: 1.6rem; }
.article__content li + li { margin-top: 0.4rem; }
.article__content img { border-radius: 8px; }
.article__pages { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); margin-top: 2rem; }

/* ---------- Newsletter CTA ---------- */
.newsletter {
  margin: 4rem auto 5rem;
  padding: 3rem 2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.newsletter::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 100% at 50% 0%, var(--accent-glow), transparent 65%);
  opacity: 0.22;
  pointer-events: none;
}
.newsletter > * { position: relative; }
.newsletter__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--accent);
  text-transform: uppercase;
}
.newsletter__title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin: 0.6rem 0 0.8rem;
}
.newsletter__lead {
  color: var(--text-dim);
  max-width: 52ch;
  margin: 0 auto 1.6rem;
}
.newsletter__form {
  display: flex;
  gap: 0.6rem;
  max-width: 480px;
  margin-inline: auto;
}
.newsletter__input {
  flex: 1;
  padding: 0.85rem 1rem;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.newsletter__input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.newsletter__button {
  padding: 0.85rem 1.4rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  font-weight: 700;
  transition: box-shadow 0.18s ease, transform 0.18s ease;
}
.newsletter__button:hover {
  box-shadow: 0 0 22px var(--accent-glow);
  transform: translateY(-1px);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
  text-align: center;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .site-header__inner { flex-wrap: wrap; }
  .nav__list { gap: 1rem; }
  .nav__list a { font-size: 10.5px; }
  .article { padding-inline: 0.5rem; }
  .newsletter { padding: 2.4rem 1.4rem; }
  .newsletter__form { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}