/* ==========================================================================
   MX Check Limited — Ledger & Ink theme
   ========================================================================== */

:root {
  --ink: #0f1b2d;
  --ink-light: #1c2c47;
  --ink-soft: #33455f;
  --paper: #f7f4ec;
  --paper-dim: #efe9da;
  --paper-line: #ddd3ba;
  --gold: #b08d3f;
  --gold-dark: #7c5e22;
  --text-body: #2b3140;
  --text-on-dark: #eae6d9;
  --text-on-dark-dim: #b7bfce;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;

  --max-width: 1200px;
  --radius: 2px;
  --transition: 0.25s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-body);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--ink);
  margin: 0 0 var(--space-2);
  line-height: 1.15;
  font-weight: 700;
}

h1 { font-size: clamp(2.6rem, 4vw + 1.2rem, 4.4rem); }
h2 { font-size: clamp(1.9rem, 2vw + 1.2rem, 2.7rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 var(--space-2); }

a {
  color: inherit;
  text-decoration: none;
}

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

ul { list-style: none; margin: 0; padding: 0; }

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-4);
}

.center { text-align: center; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--gold);
  color: var(--ink);
  padding: var(--space-2) var(--space-3);
  z-index: 1000;
}
.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 var(--space-2);
}
.eyebrow-dark { color: var(--gold-dark); }

/* ---------------- Header ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 27, 45, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(176, 141, 63, 0.25);
  transition: box-shadow var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-on-dark);
}

.crest {
  color: var(--gold);
  flex-shrink: 0;
  display: inline-flex;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.brand-sub {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-on-dark-dim);
}

.primary-nav ul {
  display: flex;
  gap: var(--space-4);
}

.primary-nav a {
  color: var(--text-on-dark-dim);
  font-size: 0.95rem;
  font-weight: 500;
  padding: var(--space-1) 0;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--text-on-dark);
  border-bottom-color: var(--gold);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(176, 141, 63, 0.4);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  margin: 0 8px;
  background: var(--gold);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ---------------- Hero ---------------- */

.hero {
  position: relative;
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-light) 100%);
  color: var(--text-on-dark);
  overflow: hidden;
  padding: var(--space-12) var(--space-4) calc(var(--space-12) + var(--space-4));
  scroll-margin-top: 72px;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.9;
  pointer-events: none;
}
.hero-pattern svg { width: 100%; height: 100%; }

.hero-inner {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  color: var(--text-on-dark);
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text-on-dark-dim);
  max-width: 620px;
  margin: 0 auto var(--space-4);
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--gold);
  color: var(--ink);
}
.btn-primary:hover {
  background: #c6a557;
}

.btn-ghost {
  border-color: rgba(234, 230, 217, 0.4);
  color: var(--text-on-dark);
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.trust-line {
  font-size: 0.85rem;
  color: var(--text-on-dark-dim);
  letter-spacing: 0.02em;
  margin: 0;
}

/* ---------------- About ---------------- */

.about {
  background: var(--paper);
  background-image:
    repeating-linear-gradient(0deg, var(--paper-line) 0, var(--paper-line) 1px, transparent 1px, transparent 96px);
  background-position: 0 0;
  scroll-margin-top: 72px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-8);
  align-items: center;
}

.about-copy p {
  color: var(--text-body);
}

.about-figure {
  display: flex;
  justify-content: center;
}

.ledger-mark {
  width: min(280px, 100%);
}

/* ---------------- Services ---------------- */

.services {
  background: var(--paper-dim);
  border-top: 1px solid var(--paper-line);
  border-bottom: 1px solid var(--paper-line);
  scroll-margin-top: 72px;
}

.services h2 { margin-bottom: var(--space-6); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.service-card {
  background: var(--paper);
  border: 1px solid var(--paper-line);
  padding: var(--space-4);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: 0 12px 28px rgba(15, 27, 45, 0.08);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-2);
  border: 1px solid var(--gold);
  color: var(--gold-dark);
  border-radius: 50%;
}

.service-card h3 { margin-bottom: var(--space-1); }
.service-card p { color: var(--text-body); margin-bottom: 0; font-size: 0.98rem; }

/* ---------------- Company Details (certificate) ---------------- */

.details {
  background: var(--ink);
  color: var(--text-on-dark);
  scroll-margin-top: 72px;
}

.details h2.on-dark { color: var(--text-on-dark); margin-bottom: var(--space-6); }

.certificate {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  border: 1px solid rgba(176, 141, 63, 0.5);
}

.certificate-corner {
  position: absolute;
  width: 22px;
  height: 22px;
  border: 1px solid var(--gold);
}
.certificate-corner.tl { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.certificate-corner.tr { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.certificate-corner.bl { bottom: -1px; left: -1px; border-right: none; border-top: none; }
.certificate-corner.br { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6) var(--space-6);
  margin: 0;
}

.cert-item-wide { grid-column: 1 / -1; }

.cert-item dt {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px;
}

.cert-item dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-on-dark);
}

/* ---------------- Contact ---------------- */

.contact {
  background: var(--paper);
  scroll-margin-top: 72px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-8);
  align-items: start;
}

.contact-card {
  background: var(--paper-dim);
  border: 1px solid var(--paper-line);
  border-left: 3px solid var(--gold);
  padding: var(--space-4);
  border-radius: var(--radius);
}

.contact-card .pin {
  color: var(--gold-dark);
  margin-bottom: var(--space-2);
}

.contact-card address {
  font-style: normal;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--ink);
  line-height: 1.5;
}

.contact-card .attn {
  margin-top: var(--space-2);
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--text-body);
}

/* ---------------- Footer ---------------- */

.site-footer {
  background: var(--ink);
  color: var(--text-on-dark-dim);
  border-top: 1px solid rgba(176, 141, 63, 0.25);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  color: var(--text-on-dark);
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
}
.footer-brand .crest { color: var(--gold); }

.footer-meta {
  font-size: 0.85rem;
  margin-bottom: var(--space-3);
}

.footer-nav {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.footer-nav a {
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--gold); }

.footer-copy {
  font-size: 0.8rem;
  margin: 0;
}

/* ---------------- Privacy page ---------------- */

.policy {
  background: var(--paper);
  scroll-margin-top: 72px;
}

.policy .section-inner {
  max-width: 820px;
}

.policy h1 { margin-bottom: var(--space-1); }

.policy .updated {
  color: var(--gold-dark);
  font-size: 0.9rem;
  margin-bottom: var(--space-6);
}

.policy h2 {
  font-size: 1.5rem;
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--paper-line);
}
.policy section:first-of-type h2 { border-top: none; padding-top: 0; margin-top: var(--space-4); }

.policy p, .policy li { color: var(--text-body); }
.policy ul { list-style: disc; padding-left: 1.4em; margin-bottom: var(--space-2); }
.policy li { margin-bottom: var(--space-1); }

.policy-hero {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-light) 100%);
  color: var(--text-on-dark);
  padding: var(--space-8) var(--space-4);
  text-align: center;
}
.policy-hero h1 { color: var(--text-on-dark); }
.policy-hero p { color: var(--text-on-dark-dim); max-width: 620px; margin: 0 auto; }

/* ---------------- Reveal animation ---------------- */

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  animation: fade-in-up 0.7s ease both;
}

.services-grid .service-card:nth-child(2) { animation-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { animation-delay: 0.2s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { animation: none; }
  .btn:hover { transform: none; }
  .service-card:hover { transform: none; }
}

/* ---------------- Responsive ---------------- */

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
}

@media (max-width: 860px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .about-figure { order: -1; margin-bottom: var(--space-3); }
  .ledger-mark { width: 200px; }
  .services-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink);
    border-bottom: 1px solid rgba(176, 141, 63, 0.25);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .primary-nav.open { max-height: 400px; }
  .primary-nav ul {
    flex-direction: column;
    gap: 0;
    padding: var(--space-2) var(--space-4) var(--space-4);
  }
  .primary-nav a {
    display: block;
    padding: var(--space-2) 0;
    border-bottom: 1px solid rgba(176, 141, 63, 0.12);
  }

  .cert-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .services-grid { grid-template-columns: 1fr; }
  .section-inner { padding: var(--space-8) var(--space-3); }
}