/* ============================================================
   Nexora Digital — Main Stylesheet
   Dark, modern, responsive. Root-relative assets.
   ============================================================ */

:root {
  --bg: #0b0f1a;
  --bg-soft: #111726;
  --bg-card: #141b2d;
  --border: #1f2940;
  --text: #e6ebf5;
  --text-dim: #97a3bd;
  --accent: #4f8cff;
  --accent-2: #22d3ee;
  --accent-glow: rgba(79, 140, 255, 0.25);
  --radius: 14px;
  --maxw: 1120px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent-2); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 15, 26, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 66px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--text); }
.brand:hover { color: var(--text); }
.brand img { width: 30px; height: 30px; }
.nav-links { display: flex; align-items: center; gap: 26px; list-style: none; }
.nav-links a { color: var(--text-dim); font-weight: 500; font-size: .95rem; }
.nav-links a:hover { color: var(--text); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: 8px; padding: 8px; cursor: pointer;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; transition: .3s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 84px 0 72px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(640px circle at 50% -10%, var(--accent-glow), transparent 70%);
  z-index: 0;
}
.hero > .container { position: relative; z-index: 1; }
.hero .eyebrow {
  display: inline-block; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-2); border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 14px; margin-bottom: 22px; background: var(--bg-soft);
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.3rem); line-height: 1.15; font-weight: 800; margin-bottom: 18px; }
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p { color: var(--text-dim); font-size: 1.1rem; max-width: 640px; margin: 0 auto 30px; }
.btn-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 10px; font-weight: 600; font-size: .96rem;
  border: 1px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .2s ease;
}
.btn-primary { background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #04111f; }
.btn-primary:hover { color: #04111f; transform: translateY(-2px); box-shadow: 0 10px 30px var(--accent-glow); }
.btn-ghost { border-color: var(--border); color: var(--text); background: var(--bg-soft); }
.btn-ghost:hover { color: var(--text); border-color: var(--accent); }

/* ---------- Sections ---------- */
section { padding: 60px 0; }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 46px; }
.section-head h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 800; margin-bottom: 12px; }
.section-head p { color: var(--text-dim); }

/* ---------- Feature grid ---------- */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 24px; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-4px); }
.card .ic { width: 46px; height: 46px; margin-bottom: 16px; color: var(--accent-2); }
.card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.card p { color: var(--text-dim); font-size: .96rem; }

/* ---------- Article list ---------- */
.posts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.post-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: border-color .2s, transform .2s;
}
.post-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.post-card .thumb { aspect-ratio: 16/9; background: var(--bg-soft); border-bottom: 1px solid var(--border); }
.post-card .thumb svg { width: 100%; height: 100%; }
.post-card .body { padding: 20px 22px 24px; }
.post-card .tag { font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-2); font-weight: 600; }
.post-card h3 { font-size: 1.18rem; margin: 8px 0 10px; line-height: 1.35; }
.post-card h3 a { color: var(--text); }
.post-card h3 a:hover { color: var(--accent); }
.post-card p { color: var(--text-dim); font-size: .94rem; }
.post-card .meta { margin-top: 14px; font-size: .82rem; color: var(--text-dim); }

/* ---------- Article body ---------- */
.article { max-width: 760px; margin: 0 auto; padding: 50px 0; }
.article .crumbs { font-size: .85rem; color: var(--text-dim); margin-bottom: 18px; }
.article h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.2; margin-bottom: 16px; font-weight: 800; }
.article .post-meta { color: var(--text-dim); font-size: .9rem; margin-bottom: 30px; padding-bottom: 22px; border-bottom: 1px solid var(--border); }
.article h2 { font-size: 1.5rem; margin: 36px 0 14px; font-weight: 700; }
.article h3 { font-size: 1.2rem; margin: 26px 0 10px; font-weight: 700; }
.article p { margin-bottom: 18px; color: #cdd5e8; }
.article ul, .article ol { margin: 0 0 18px 22px; color: #cdd5e8; }
.article li { margin-bottom: 8px; }
.article .lead { font-size: 1.12rem; color: var(--text); }
.article blockquote {
  border-left: 3px solid var(--accent); padding: 6px 0 6px 20px; margin: 24px 0;
  color: var(--text-dim); font-style: italic;
}

/* ---------- Static page (legal etc) ---------- */
.page { max-width: 800px; margin: 0 auto; padding: 50px 0; }
.page h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 8px; font-weight: 800; }
.page .updated { color: var(--text-dim); font-size: .9rem; margin-bottom: 30px; }
.page h2 { font-size: 1.4rem; margin: 30px 0 12px; font-weight: 700; }
.page p { margin-bottom: 16px; color: #cdd5e8; }
.page ul { margin: 0 0 16px 22px; color: #cdd5e8; }
.page li { margin-bottom: 7px; }

/* ---------- Contact form ---------- */
.form-grid { max-width: 620px; margin: 0 auto; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .9rem; margin-bottom: 7px; color: var(--text-dim); }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-soft); color: var(--text); font-family: inherit; font-size: .96rem;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: .85rem; color: var(--text-dim); margin-top: 12px; }

/* ---------- CTA band ---------- */
.cta {
  background: linear-gradient(120deg, var(--bg-soft), var(--bg-card));
  border: 1px solid var(--border); border-radius: 18px;
  text-align: center; padding: 50px 30px; margin: 20px 0;
}
.cta h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 12px; }
.cta p { color: var(--text-dim); margin-bottom: 24px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 50px 0 30px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 30px; margin-bottom: 36px; }
.footer-grid h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); margin-bottom: 14px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { color: var(--text-dim); font-size: .94rem; }
.footer-grid a:hover { color: var(--text); }
.footer-brand p { color: var(--text-dim); font-size: .94rem; margin-top: 12px; max-width: 320px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--text-dim); font-size: .88rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .posts { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links {
    position: fixed; top: 66px; right: 0; left: 0;
    flex-direction: column; gap: 0; align-items: stretch;
    background: var(--bg-soft); border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; transition: max-height .3s ease;
  }
  .nav-links.open { max-height: 360px; }
  .nav-links li { border-top: 1px solid var(--border); }
  .nav-links a { display: block; padding: 14px 20px; }
  .nav-toggle { display: block; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 50px; }
  section { padding: 44px 0; }
}