/* Northlink Trade — shared stylesheet
   Palette: navy #0F1E3D, grey #5A6472, accent blue #2E6FDB, off-white #F7F8FA, hairline #DCE0E6 */

@font-face {
  font-family: "Inter";
  src: local("Inter");
}

:root {
  --navy: #0F1E3D;
  --grey: #5A6472;
  --accent: #2E6FDB;
  --bg: #F7F8FA;
  --hairline: #DCE0E6;
  --white: #FFFFFF;
  --font-head: "IBM Plex Sans", "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 4px;
  --max-w: 1180px;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2rem, 4vw, 3.1rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--grey); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--hairline);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand svg { height: 34px; width: auto; }
.brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
  letter-spacing: -0.01em;
}

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: var(--navy);
  font-weight: 600;
  font-size: 0.94rem;
}
.main-nav a:hover { color: var(--accent); text-decoration: none; }

.lang-switch {
  display: flex;
  gap: 6px;
  border-left: 1px solid var(--hairline);
  padding-left: 20px;
}
.lang-switch a {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--grey);
  padding: 4px 6px;
  border-radius: var(--radius);
}
.lang-switch a[aria-current="true"] {
  color: var(--white);
  background: var(--navy);
}

.nav-toggle { display: none; }

@media (max-width: 880px) {
  .main-nav ul { display: none; }
  .nav-toggle { display: block; background: none; border: none; font-size: 1.6rem; cursor: pointer; color: var(--navy); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--accent); color: var(--white); }
.btn-primary:hover { background: #2559b0; text-decoration: none; }
.btn-outline { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); text-decoration: none; }
.btn-outline-light { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-outline-light:hover { background: var(--white); color: var(--navy); text-decoration: none; }

/* ---------- Hero ---------- */
.hero {
  background: var(--navy);
  color: var(--white);
  padding: 90px 0 70px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero .kicker {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #9DB6E8;
  margin-bottom: 18px;
}
.hero h1 { color: var(--white); max-width: 820px; }
.hero .subhead { color: #C4CEDE; font-size: 1.15rem; max-width: 680px; margin-bottom: 32px; }
.hero .cta-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- Trust strip ---------- */
.trust-strip {
  background: var(--white);
  border-bottom: 1px solid var(--hairline);
}
.trust-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px 24px;
}
.trust-item {
  border-left: 2px solid var(--accent);
  padding-left: 14px;
}
.trust-item .tag {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
.trust-item p { margin: 0; font-size: 0.92rem; color: var(--navy); }

@media (max-width: 880px) {
  .trust-strip .container { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Sections ---------- */
section { padding: 80px 0; }
.section-alt { background: var(--white); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head .kicker {
  display: block;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

/* Pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.pillar {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 32px 28px;
}
.pillar .num {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

@media (max-width: 880px) {
  .pillars { grid-template-columns: 1fr; }
}

/* Process steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 28px 20px 20px;
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--white);
  background: var(--navy);
  display: inline-block;
  padding: 3px 9px;
  border-radius: var(--radius);
  margin-bottom: 14px;
}

@media (max-width: 880px) {
  .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}

/* Pain points / grid cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 30px 26px;
}
@media (max-width: 880px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* CTA band */
.cta-band {
  background: var(--navy);
  color: var(--white);
  text-align: center;
}
.cta-band h2 { color: var(--white); }
.cta-band p { color: #C4CEDE; max-width: 560px; margin: 0 auto 28px; }

/* Forms */
.form-wrap {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 720px;
  margin: 0 auto;
}
.form-row { margin-bottom: 20px; }
.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--navy);
  margin-bottom: 6px;
}
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--navy);
  background: var(--bg);
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  background: var(--white);
}
.form-row.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.form-row.checkbox-row input { width: auto; margin-top: 4px; }
.form-row.checkbox-row label { font-weight: 400; font-size: 0.85rem; color: var(--grey); margin: 0; }
.form-note { font-size: 0.8rem; color: var(--grey); margin-top: 10px; }

/* Footer */
.site-footer {
  background: var(--navy);
  color: #AEB9CC;
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-grid h4 { color: var(--white); font-size: 0.9rem; margin-bottom: 16px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: #AEB9CC; font-size: 0.9rem; }
.footer-grid a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: #7E8CA6;
}
@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Micro tolerance-style labels */
.tolerance-label {
  font-family: "SFMono-Regular", Menlo, monospace;
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.04em;
}

/* Blog */
.article-header { padding: 60px 0 30px; background: var(--white); border-bottom: 1px solid var(--hairline); }
.article-meta { font-size: 0.85rem; color: var(--grey); margin-bottom: 12px; }
.article-body { max-width: 760px; margin: 0 auto; padding: 50px 24px; }
.article-body h2 { margin-top: 1.4em; }
.article-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.6em 0;
  padding: 0.4em 0 0.4em 20px;
  color: var(--navy);
  font-style: italic;
}

/* Utility */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ---------- Motion: restrained scroll-reveal + hero entrance ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-stagger {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.hero-stagger.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .hero-stagger {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ---------- Form submission status (Web3Forms) ---------- */
.form-status {
  margin: 14px 0 0;
  font-size: 0.9rem;
  font-weight: 600;
  min-height: 1.2em;
}
.form-status.is-success { color: #1D8A4C; }
.form-status.is-error { color: #C0392B; }