/* NexStride — shared design system
 * Used by /, /about, /pricing, /faq.
 * Page-specific blocks (hero variants, sections) remain inline on each page.
 */

:root {
  --paper: #F4F1EC;
  --paper-deep: #EAE6DE;
  --ink: #1A1816;
  --ink-soft: #4A4641;
  --ink-mute: #8B857C;
  --ink-faint: #C4BEB3;
  --rule: #D8D2C6;
  --accent: #B85C2E;
}

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

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--ink); color: var(--paper); }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 clamp(28px, 6vw, 96px);
}

/* ============ NAV ============ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(244, 241, 236, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 22px clamp(28px, 6vw, 96px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.nav-mark {
  font-weight: 500;
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 36px;
  font-size: 13px;
  font-weight: 400;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--ink); }

.nav-cta {
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 400;
  border-radius: 2px;
  transition: background 0.2s;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--accent); }

@media (max-width: 900px) {
  .nav-links { display: none; }
}

/* ============ SECTIONS ============ */
section { padding: 120px 0; position: relative; }
.section-rule { border-top: 1px solid var(--rule); }

.section-eyebrow {
  font-size: 12px;
  color: var(--ink-mute);
  margin-bottom: 40px;
  font-weight: 400;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: 14px;
}
.section-eyebrow::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--ink-mute);
}

/* ============ CTAs ============ */
.cta-primary {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  padding: 18px 32px;
  font-size: 15px;
  font-weight: 400;
  border-radius: 2px;
  transition: background 0.2s, transform 0.2s;
  letter-spacing: 0.005em;
}
.cta-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.cta-secondary {
  display: inline-block;
  color: var(--ink);
  text-decoration: none;
  padding: 18px 4px;
  font-size: 15px;
  font-weight: 400;
  border-bottom: 1px solid var(--ink);
  transition: color 0.2s, border-color 0.2s;
  letter-spacing: 0.005em;
}
.cta-secondary:hover { color: var(--accent); border-color: var(--accent); }

/* ============ FOOTER ============ */
footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0;
  font-size: 12px;
  color: var(--ink-mute);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

footer a {
  color: var(--ink-mute);
  text-decoration: none;
}
footer a:hover { color: var(--accent); }

/* ============ ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}