/* ==========================================================================
   Nexacore Systems — Design System
   Palette: near-black navy base, electric-blue primary, cyan secondary,
   violet reserved for security/edge accents only.
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (labels)
   ========================================================================== */

:root {
  --bg: #0a0e17;
  --bg-raised: #0f1420;
  --surface: #131926;
  --surface-2: #171f30;
  --border: #232c40;
  --border-soft: #1a2233;

  --text: #e8ecf5;
  --text-muted: #93a0b8;
  --text-faint: #5c6883;

  --blue: #3b6bfb;
  --blue-bright: #5c85ff;
  --cyan: #22d3c8;
  --violet: #8b7bff;

  --grad-hero: radial-gradient(circle at 78% 22%, rgba(59, 107, 251, 0.28), transparent 42%),
               radial-gradient(circle at 15% 85%, rgba(34, 211, 200, 0.14), transparent 45%);

  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --container: 1180px;
  --radius: 14px;
  --radius-sm: 8px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--cyan);
  display: inline-block;
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue-bright), var(--blue));
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(59, 107, 251, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -8px rgba(59, 107, 251, 0.75); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--blue-bright); color: var(--blue-bright); }
.btn-sm { padding: 9px 18px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 30px; width: auto; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.main-nav a {
  font-size: 13.5px;
  color: var(--text-muted);
  transition: color 0.2s var(--ease);
  position: relative;
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active { color: var(--text); }
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -26px;
  height: 2px;
  background: var(--blue-bright);
}
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 42px; height: 42px;
  color: var(--text);
  cursor: pointer;
}

@media (max-width: 900px) {
  .main-nav { position: fixed; inset: 76px 0 0 0; background: var(--bg); flex-direction: column; justify-content: flex-start; padding: 32px 28px; gap: 26px; transform: translateX(100%); transition: transform 0.35s var(--ease); }
  .main-nav.open { transform: translateX(0); }
  .main-nav a { font-size: 18px; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-actions .btn-ghost { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 108px 0 96px;
  background: var(--grad-hero), var(--bg);
  overflow: hidden;
  border-bottom: 1px solid var(--border-soft);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  margin: 20px 0 22px;
  color: #fff;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--cyan), var(--blue-bright));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lede {
  font-size: 17.5px;
  color: var(--text-muted);
  max-width: 46ch;
  margin-bottom: 34px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-graphic { position: relative; aspect-ratio: 1/1; }
.hero-graphic svg { width: 100%; height: 100%; }

.trust-bar {
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-raised);
}
.trust-bar .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 40px;
  padding: 22px 28px;
  justify-content: space-between;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}
.trust-item svg { width: 15px; height: 15px; stroke: var(--cyan); flex-shrink: 0; }

/* ---------- Section scaffolding ---------- */
section { padding: 108px 0; }
.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(1.9rem, 3vw, 2.6rem); margin-top: 18px; color: #fff; }
.section-head p { color: var(--text-muted); margin-top: 16px; font-size: 16.5px; }
.section-alt { background: var(--bg-raised); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }

/* ---------- Pillars / service cards ---------- */
.pillars { display: flex; flex-direction: column; gap: 28px; }
.pillar-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.pillar-card:hover { border-color: var(--border); transform: translateY(-3px); }
.pillar-card:nth-child(even) { grid-template-columns: 1.1fr 0.9fr; }
.pillar-card:nth-child(even) .pillar-media { order: 2; }
.pillar-media { position: relative; min-height: 280px; }
.pillar-media img { width: 100%; height: 100%; object-fit: cover; }
.pillar-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,14,23,0.55));
}
.pillar-body { padding: 40px 44px; display: flex; flex-direction: column; justify-content: center; gap: 16px; }
.pillar-tag { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--blue-bright); }
.pillar-body h3 { font-size: 1.55rem; color: #fff; }
.pillar-body p.desc { color: var(--text-muted); font-size: 15px; }
.pillar-list { list-style: none; margin: 6px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; }
.pillar-list li { font-size: 13.8px; color: var(--text-muted); display: flex; align-items: center; gap: 9px; }
.pillar-list li::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); flex-shrink: 0; }
.pillar-body .btn { align-self: flex-start; margin-top: 8px; }

@media (max-width: 860px) {
  .pillar-card, .pillar-card:nth-child(even) { grid-template-columns: 1fr; }
  .pillar-card:nth-child(even) .pillar-media { order: 0; }
  .pillar-media { min-height: 200px; }
  .pillar-body { padding: 32px 26px; }
  .pillar-list { grid-template-columns: 1fr; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-graphic { max-width: 340px; margin: 0 auto; }
}

/* ---------- Process steps ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.process-step { background: var(--surface); padding: 36px 28px; }
.process-num { font-family: var(--font-mono); color: var(--blue-bright); font-size: 13px; letter-spacing: 0.08em; }
.process-step h3 { color: #fff; font-size: 1.15rem; margin: 18px 0 10px; }
.process-step p { color: var(--text-muted); font-size: 14.5px; }
@media (max-width: 860px) { .process-grid { grid-template-columns: 1fr; } }

/* ---------- CTA ---------- */
.cta-panel {
  background: linear-gradient(135deg, #101a33, #0a1120 70%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 64px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: "";
  position: absolute; inset: -40% -10% auto auto; width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(34,211,200,0.16), transparent 70%);
}
.cta-copy h2 { color: #fff; font-size: clamp(1.7rem, 2.6vw, 2.3rem); }
.cta-copy p { color: var(--text-muted); margin-top: 14px; max-width: 40ch; }
.cta-note { color: var(--text-faint); font-size: 13px; margin-top: 14px; }
@media (max-width: 760px) { .cta-panel { flex-direction: column; align-items: flex-start; padding: 44px 30px; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-raised); border-top: 1px solid var(--border-soft); padding: 72px 0 32px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-soft);
}
.footer-brand img { height: 26px; margin-bottom: 16px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; max-width: 34ch; }
.footer-email { display: inline-block; margin-top: 16px; color: var(--cyan); font-family: var(--font-mono); font-size: 13.5px; }
.footer-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); margin-bottom: 18px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.footer-col a { color: var(--text-muted); font-size: 14.5px; transition: color 0.2s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding-top: 28px; }
.footer-bottom p { color: var(--text-faint); font-size: 13px; }
.footer-legal { display: flex; gap: 22px; }
.footer-legal a { color: var(--text-faint); font-size: 13px; }
.footer-legal a:hover { color: var(--text-muted); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Inner pages (service detail, legal, about, contact) ---------- */
.page-hero {
  padding: 72px 0 56px;
  background: var(--grad-hero), var(--bg);
  border-bottom: 1px solid var(--border-soft);
}
.breadcrumb { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-faint); margin-bottom: 18px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--cyan); }
.page-hero h1 { font-size: clamp(2rem, 3.6vw, 2.9rem); color: #fff; margin-top: 14px; }
.page-hero .lede { color: var(--text-muted); font-size: 16.5px; max-width: 60ch; margin-top: 16px; }

.detail-list { display: flex; flex-direction: column; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-top: 8px; }
.detail-item { background: var(--surface); padding: 36px 40px; display: grid; grid-template-columns: 260px 1fr; gap: 32px; }
.detail-item h3 { color: #fff; font-size: 1.3rem; }
.detail-item .desc { color: var(--text-muted); margin-top: 12px; font-size: 15px; }
.detail-item ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.detail-item ul li { font-size: 14.5px; color: var(--text-muted); display: flex; gap: 10px; align-items: flex-start; }
.detail-item ul li::before { content: "→"; color: var(--cyan); font-family: var(--font-mono); flex-shrink: 0; }
@media (max-width: 760px) { .detail-item { grid-template-columns: 1fr; gap: 14px; padding: 28px 26px; } }

/* Legal pages */
.legal-content { max-width: 760px; }
.legal-content h2 { color: #fff; font-size: 1.35rem; margin: 44px 0 14px; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p, .legal-content li { color: var(--text-muted); font-size: 15px; line-height: 1.75; }
.legal-content ul { padding-left: 20px; margin: 12px 0; }
.legal-content li { margin-bottom: 8px; }
.legal-updated { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-faint); margin-top: 10px; }
.legal-toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 24px 28px; margin: 32px 0 48px; }
.legal-toc h4 { color: var(--text); font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 14px; }
.legal-toc ol { margin: 0; padding-left: 20px; color: var(--text-muted); font-size: 14px; display: grid; gap: 8px; }
.legal-toc a { color: var(--text-muted); }
.legal-toc a:hover { color: var(--cyan); }

/* About */
.credentials-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.credential-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 26px 22px; text-align: center; }
.credential-card svg { width: 26px; height: 26px; stroke: var(--cyan); margin: 0 auto 14px; }
.credential-card h4 { color: var(--text); font-size: 14px; }
@media (max-width: 760px) { .credentials-grid { grid-template-columns: 1fr 1fr; } }

.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 860px) { .values-grid { grid-template-columns: 1fr 1fr; } }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.contact-form { display: grid; gap: 18px; }
.field label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 8px; font-family: var(--font-mono); letter-spacing: 0.03em; }
.field input, .field select, .field textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14.5px;
  transition: border-color 0.2s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue-bright); outline: none; }
.field textarea { resize: vertical; min-height: 120px; }
.contact-side { display: flex; flex-direction: column; gap: 28px; }
.contact-info-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 32px; }
.contact-info-card h4 { color: #fff; font-size: 15px; margin-bottom: 10px; }
.contact-info-card p, .contact-info-card a { color: var(--text-muted); font-size: 14.5px; }
.contact-info-card a { color: var(--cyan); }
.form-note { font-size: 13px; color: var(--text-faint); }
.form-success { display: none; background: var(--surface); border: 1px solid var(--cyan); border-radius: var(--radius-sm); padding: 18px 20px; color: var(--text); font-size: 14.5px; }
.form-success.show { display: block; }
.form-error { display: none; background: var(--surface); border: 1px solid #f26d6d; border-radius: var(--radius-sm); padding: 18px 20px; color: var(--text); font-size: 14.5px; }
.form-error.show { display: block; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }

/* Utility */
.mt-lg { margin-top: 56px; }
.center { text-align: center; }