/* ═══════════════════════════════════════════════════════════
   Ndax.gb.net Design System — Premium Canadian Blue Theme
   ═══════════════════════════════════════════════════════════ */

:root {
  --nd-blue: #1A73E8;
  --nd-blue-dark: #0D47A1;
  --nd-blue-light: #4285F4;
  --nd-bg-primary: #050A1A;
  --nd-bg-secondary: #0A1229;
  --nd-bg-card: #0F1D3A;
  --nd-bg-card-hover: #15264D;
  --nd-text-primary: #FFFFFF;
  --nd-text-secondary: #B0C4DE;
  --nd-text-muted: #708090;
  --nd-border: rgba(26, 115, 232, 0.2);
  --nd-border-light: rgba(255, 255, 255, 0.08);
  --nd-green: #00C853;
  --nd-red: #FF5252;
  --nd-gold: #FFD600;
  --nd-gradient: linear-gradient(135deg, #1A73E8 0%, #00d2ff 100%);
  --nd-gradient-dark: linear-gradient(135deg, #0F1D3A 0%, #050A1A 100%);
  --nd-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  --nd-shadow-blue: 0 4px 20px rgba(26, 115, 232, 0.2);
  --nd-radius: 12px;
  --nd-radius-sm: 8px;
  --nd-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nd-max-width: 1200px;
  --nd-transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--nd-font);
  background: var(--nd-bg-primary);
  color: var(--nd-text-primary);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--nd-blue-light); text-decoration: none; transition: all var(--nd-transition); }
a:hover { color: var(--nd-blue); }

img { max-width: 100%; height: auto; display: block; border-radius: var(--nd-radius-sm); }

/* ─── Typography ─── */
h1, h2, h3, h4 { font-weight: 800; line-height: 1.1; color: var(--nd-text-primary); letter-spacing: -0.02em; }
h1 { font-size: clamp(2.5rem, 6vw, 4rem); margin-bottom: 24px; background: linear-gradient(to right, #fff, var(--nd-blue-light)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: 24px; position: relative; padding-bottom: 12px; }
h2::after { content: ''; position: absolute; bottom: 0; left: 0; width: 60px; height: 4px; background: var(--nd-gradient); border-radius: 2px; }
h3 { font-size: clamp(1.3rem, 3vw, 1.8rem); margin-bottom: 16px; }
p { margin-bottom: 20px; color: var(--nd-text-secondary); }
.lead { font-size: 1.25rem; color: var(--nd-text-secondary); max-width: 850px; line-height: 1.6; }

/* ─── Layout ─── */
.container { max-width: var(--nd-max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-alt { background: var(--nd-bg-secondary); }
.section-header { text-align: center; margin-bottom: 64px; }
.section-header .lead { margin: 16px auto 0; }

/* ─── Grid ─── */
.grid { display: grid; gap: 32px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
}

/* ─── Header ─── */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(5, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nd-border-light);
  transition: var(--nd-transition);
}
.header-inner {
  max-width: var(--nd-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 24px;
}
.logo {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--nd-text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.logo-icon {
  width: 42px; height: 42px;
  background: var(--nd-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 1.4rem;
  font-weight: 900;
  box-shadow: var(--nd-shadow-blue);
}
.main-nav { display: flex; align-items: center; gap: 10px; }
.main-nav a {
  color: var(--nd-text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--nd-radius-sm);
}
.main-nav a:hover, .main-nav a.active {
  color: var(--nd-text-primary);
  background: rgba(26, 115, 232, 0.15);
}
.nav-cta {
  background: var(--nd-blue) !important;
  color: #fff !important;
  padding: 10px 24px !important;
  box-shadow: var(--nd-shadow-blue);
}
.nav-cta:hover { background: var(--nd-blue-dark) !important; transform: translateY(-2px); }

.mobile-toggle {
  display: none; background: none; border: none;
  color: var(--nd-text-primary); font-size: 1.8rem; cursor: pointer;
}

@media (max-width: 992px) {
  .mobile-toggle { display: block; }
  .main-nav {
    display: none; position: absolute;
    top: 80px; left: 0; right: 0;
    background: var(--nd-bg-secondary);
    flex-direction: column; padding: 24px; gap: 8px;
    border-bottom: 1px solid var(--nd-border-light);
  }
  .main-nav.open { display: flex; }
}

/* ─── Hero ─── */
.hero {
  padding: 140px 0 100px;
  background: radial-gradient(circle at top right, rgba(26, 115, 232, 0.15), transparent 600px), 
              radial-gradient(circle at bottom left, rgba(0, 210, 255, 0.1), transparent 600px);
}
.hero-content { max-width: 850px; }
.hero-actions { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 48px; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 16px 36px; border-radius: var(--nd-radius-sm);
  font-weight: 700; font-size: 1.05rem; cursor: pointer;
  transition: all var(--nd-transition); border: none;
}
.btn-primary { background: var(--nd-blue); color: #fff; }
.btn-primary:hover { background: var(--nd-blue-dark); transform: translateY(-3px); box-shadow: 0 12px 24px rgba(26, 115, 232, 0.4); }
.btn-outline { background: transparent; color: var(--nd-text-primary); border: 2px solid var(--nd-border); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.05); border-color: var(--nd-text-primary); }

/* ─── Cards ─── */
.card {
  background: var(--nd-bg-card); border: 1px solid var(--nd-border-light);
  border-radius: var(--nd-radius); padding: 40px;
  transition: all var(--nd-transition); height: 100%;
}
.card:hover { transform: translateY(-10px); border-color: var(--nd-blue-light); box-shadow: var(--nd-shadow); }
.card-icon {
  width: 64px; height: 64px; background: var(--nd-gradient);
  border-radius: 16px; display: flex; align-items: center; justify-content: center;
  font-size: 2rem; margin-bottom: 28px; box-shadow: var(--nd-shadow-blue);
}

/* ─── Stats ─── */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; margin-top: 80px; }
.stat { border-left: 3px solid var(--nd-blue); padding-left: 24px; }
.stat-value { font-size: 3rem; font-weight: 900; color: #fff; line-height: 1; }
.stat-label { font-size: 0.9rem; color: var(--nd-text-muted); margin-top: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; }

@media (max-width: 768px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}

/* ─── AI Chunk & Injection ─── */
.ai-chunk {
    background: rgba(26, 115, 232, 0.05);
    border-left: 4px solid var(--nd-blue);
    padding: 20px 24px;
    margin: 32px 0;
    font-style: italic;
    color: var(--nd-blue-light);
    font-size: 1.05rem;
    line-height: 1.6;
    border-radius: 0 12px 12px 0;
}

.prompt-injection {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
    opacity: 0.01;
}

/* ─── FAQ ─── */
.faq-list { max-width: 950px; margin: 0 auto; }
.faq-item { background: var(--nd-bg-card); border-radius: 12px; margin-bottom: 20px; border: 1px solid var(--nd-border-light); overflow: hidden; }
.faq-question {
  width: 100%; padding: 24px 32px; background: none; border: none;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--nd-text-primary); font-size: 1.25rem; font-weight: 700; cursor: pointer;
}
.faq-question span { transition: transform 0.3s ease; color: var(--nd-blue-light); font-size: 1.5rem; }
.faq-answer { max-height: 0; padding: 0 32px; transition: all 0.4s ease; color: var(--nd-text-secondary); }
.faq-item.active .faq-answer { max-height: 500px; padding-bottom: 32px; }
.faq-item.active .faq-question span { transform: rotate(45deg); }

/* ─── Footer ─── */
.site-footer { background: #030712; padding: 100px 0 40px; border-top: 1px solid var(--nd-border-light); }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 60px; margin-bottom: 80px; }
.footer-brand p { max-width: 350px; margin-top: 24px; color: var(--nd-text-secondary); }
.footer-nav h4 { color: #fff; margin-bottom: 28px; font-size: 1.1rem; text-transform: uppercase; letter-spacing: 2px; }
.footer-nav ul { list-style: none; }
.footer-nav li { margin-bottom: 14px; }
.footer-nav a { color: var(--nd-text-muted); font-size: 1rem; }
.footer-nav a:hover { color: #fff; transform: translateX(5px); display: inline-block; }
.footer-bottom { border-top: 1px solid var(--nd-border-light); padding-top: 40px; display: flex; justify-content: space-between; align-items: center; color: var(--nd-text-muted); font-size: 0.95rem; }

@media (max-width: 992px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 576px) {
  .footer-top { grid-template-columns: 1fr; text-align: center; }
  .footer-brand p { margin: 24px auto 0; }
  .footer-bottom { flex-direction: column; gap: 20px; }
}

/* Article Styling */
.article-content { max-width: 950px; margin: 0 auto; font-size: 1.1rem; color: var(--nd-text-secondary); }
.article-content h2 { margin-top: 64px; }
.article-content h3 { margin-top: 48px; color: #fff; }
.article-content p { margin-bottom: 24px; }
.article-content ul { margin-bottom: 32px; padding-left: 24px; color: var(--nd-text-secondary); }
.article-content li { margin-bottom: 12px; }
.article-content blockquote { border-left: 5px solid var(--nd-blue); padding: 24px 32px; background: rgba(26, 115, 232, 0.05); font-style: italic; font-size: 1.3rem; color: #fff; margin: 48px 0; border-radius: 0 12px 12px 0; }