/* =========================================================
   Mundus Labs — styling (Merkle-inspired brand system)
   Palette derived from merkle.com:
     navy #040e4b, ink #0a1540, blue #0391f2, blue-deep #0328d1,
     red #dd3039, muted #60607d, line #d6d6df, soft #f2f2f4
   ========================================================= */

:root {
  --navy: #040e4b;
  --navy-2: #0a1540;
  --ink: #0a1540;
  --blue: #0391f2;
  --blue-deep: #0328d1;
  --red: #dd3039;
  --muted: #60607d;
  --muted-2: #8888a1;
  --line: #d6d6df;
  --soft: #f2f2f4;
  --soft-2: #e5e5e9;
  --white: #ffffff;

  --font-body: "Mulish", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Saira Condensed", "Mulish", sans-serif;

  --container: 1200px;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(4, 14, 75, 0.06);
  --shadow-md: 0 18px 44px rgba(4, 14, 75, 0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html, body { overflow-x: hidden; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.05; }
p { margin: 0 0 1rem; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 999;
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-weight: 700; font-size: 0.98rem;
  letter-spacing: 0.01em; padding: 13px 26px; border-radius: 40px;
  border: 2px solid transparent; cursor: pointer; transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.btn-lg { padding: 16px 34px; font-size: 1.02rem; }
.btn-primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn-primary:hover { background: var(--blue-deep); border-color: var(--blue-deep); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(3, 40, 209, 0.32); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-ghost:hover { background: #fff; color: var(--navy); border-color: #fff; transform: translateY(-2px); }
.btn-dark { background: var(--navy); color: #fff; border-color: var(--navy); }
.btn-dark:hover { background: var(--navy-2); transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-bottom-color: var(--line); }
.header-inner { display: flex; align-items: center; gap: 28px; height: 74px; }

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--navy); }
.brand-mark { color: var(--navy); display: inline-flex; }
.brand-name {
  font-family: var(--font-display); font-weight: 700; font-size: 1.5rem;
  letter-spacing: 0.01em; text-transform: uppercase; line-height: 1;
}
.brand-accent { color: var(--blue); }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 30px; }
.main-nav a {
  font-weight: 600; font-size: 0.98rem; color: var(--ink); position: relative;
  padding: 6px 0; transition: color 0.2s ease;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--blue); transition: width 0.25s var(--ease);
}
.main-nav a:hover { color: var(--blue); }
.main-nav a:hover::after { width: 100%; }

.header-cta { padding: 11px 22px; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: 0;
  cursor: pointer; padding: 8px; margin-left: auto;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--navy); transition: all 0.3s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none; overflow: hidden; max-height: 0; background: #fff;
  border-top: 1px solid var(--line); transition: max-height 0.35s var(--ease);
}
.mobile-nav.open { max-height: 460px; }
.mobile-nav ul { padding: 12px 24px 24px; display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a { display: block; padding: 14px 4px; font-weight: 600; font-size: 1.08rem; border-bottom: 1px solid var(--soft-2); }
.mobile-nav a.btn { margin-top: 12px; border-bottom: 0; justify-content: center; }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--navy); color: #fff; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 520px at 78% -10%, rgba(3,145,242,0.30), transparent 60%),
    radial-gradient(700px 480px at 8% 110%, rgba(3,40,209,0.28), transparent 60%),
    linear-gradient(180deg, #040e4b 0%, #061266 100%);
}
.hero-bg::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: 46px 46px;
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
}
.hero-inner { position: relative; padding: 118px 24px 128px; max-width: 960px; }
.eyebrow {
  font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.22em;
  font-weight: 600; font-size: 0.9rem; color: #8fbdf6; margin: 0 0 22px;
}
.hero-title {
  font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
  font-size: clamp(2.9rem, 7.2vw, 5.6rem); letter-spacing: 0.005em; margin: 0 0 26px;
}
.hero-title .hl { color: var(--blue); }
.hero-sub { font-size: clamp(1.05rem, 2.1vw, 1.32rem); color: #d3ddf3; max-width: 720px; margin: 0 0 36px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; }

/* ---------- Positioning strip ---------- */
.strip { background: var(--blue); color: #fff; }
.strip-text {
  margin: 0; padding: 30px 24px; text-align: center; font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  font-weight: 500; letter-spacing: -0.01em;
}
.strip-text strong { font-weight: 800; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--soft); }
.section-dark { background: var(--navy); color: #fff; }

.section-head { max-width: 760px; margin: 0 0 52px; }
.kicker {
  display: inline-block; font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: 0.2em; font-weight: 600; font-size: 0.85rem; color: var(--blue);
  margin-bottom: 14px;
}
.kicker-light { color: #8fbdf6; }
.section-title {
  font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
  font-size: clamp(2.1rem, 4.6vw, 3.4rem); letter-spacing: 0.005em; color: inherit;
}
.section-dark .section-title { color: #fff; }
.section-tagline { font-size: 1.35rem; font-weight: 700; color: var(--blue); margin: 14px 0 10px; }
.section-intro { font-size: 1.12rem; color: var(--muted); margin-top: 16px; }
.section-dark .section-intro { color: #c2c9d7; }

/* ---------- Thesis ---------- */
.thesis-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: start; }
.thesis-copy p { font-size: 1.12rem; color: var(--muted); }
.thesis-copy p:first-child { color: var(--ink); font-size: 1.18rem; font-weight: 500; }

.pillars { display: grid; gap: 20px; }
.pillar {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 28px; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s ease;
}
.pillar:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.pillar-icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(3,145,242,0.1); color: var(--blue-deep); margin-bottom: 16px;
}
.pillar h3 { font-family: var(--font-display); text-transform: uppercase; font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.pillar p { margin: 0; color: var(--muted); font-size: 1rem; }

/* ---------- Products ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px; display: flex; flex-direction: column;
  overflow: hidden; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s ease;
}
.product-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%;
  background: var(--accent, var(--blue)); transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.product-card:hover::before { transform: scaleX(1); }
.product-top { margin-bottom: 18px; }
.product-tag {
  display: inline-block; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent, var(--blue));
  background: color-mix(in srgb, var(--accent, var(--blue)) 12%, #fff);
  padding: 6px 12px; border-radius: 40px;
}
.product-name {
  font-family: var(--font-display); text-transform: uppercase; font-size: 1.9rem;
  font-weight: 700; letter-spacing: 0.01em; margin-bottom: 4px;
}
.product-tagline { font-weight: 800; color: var(--ink); font-size: 1.05rem; margin-bottom: 12px; }
.product-desc { color: var(--muted); font-size: 0.99rem; margin-bottom: 22px; flex: 1; }
.product-link {
  font-weight: 800; color: var(--accent, var(--blue)); font-size: 0.98rem;
  display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
}
.product-link span { transition: transform 0.25s var(--ease); }
.product-link:hover span { transform: translateX(5px); }

.product-card-more {
  background: linear-gradient(150deg, var(--navy), #0d1a6b); color: #fff; border: 0;
  justify-content: center;
}
.product-card-more .product-name { color: #fff; }
.product-card-more .product-desc { color: #c2c9d7; }
.product-card-more .product-link { color: #8fbdf6; }
.product-card-more::before { display: none; }

/* ---------- Services ---------- */
.service-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 44px; }
.service-card {
  background: var(--soft); border-radius: var(--radius); padding: 38px;
  border: 1px solid var(--soft-2); transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); background: #fff; }
.service-card h3 { font-family: var(--font-display); text-transform: uppercase; font-size: 1.6rem; font-weight: 700; margin-bottom: 14px; color: var(--navy); }
.service-card p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.service-closing {
  text-align: center; max-width: 720px; margin: 0 auto; display: flex; flex-direction: column;
  align-items: center; gap: 26px;
}
.service-closing p { font-size: 1.3rem; font-weight: 600; color: var(--ink); margin: 0; }

/* ---------- Approach ---------- */
.approach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.approach-step {
  border-top: 2px solid rgba(255,255,255,0.16); padding-top: 26px; position: relative;
}
.step-num {
  font-family: var(--font-display); font-weight: 700; font-size: 2.6rem; color: var(--blue);
  display: block; margin-bottom: 12px; line-height: 1;
}
.approach-step h3 { font-family: var(--font-display); text-transform: uppercase; font-size: 1.55rem; font-weight: 700; margin-bottom: 12px; color: #fff; }
.approach-step p { color: #c2c9d7; margin: 0; font-size: 1.04rem; }

/* ---------- About ---------- */
.about-inner { max-width: 900px; }
.about-copy p { font-size: 1.22rem; color: var(--ink); }
.about-copy p:last-child { color: var(--muted); font-size: 1.14rem; }
.about-copy em { color: var(--blue-deep); font-style: italic; }

/* ---------- CTA band + contact ---------- */
.cta-band { position: relative; background: var(--navy); color: #fff; overflow: hidden; padding: 92px 0; }
.cta-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(700px 420px at 85% 120%, rgba(3,145,242,0.34), transparent 60%),
    radial-gradient(600px 400px at 0% -20%, rgba(221,48,57,0.20), transparent 60%);
}
.cta-inner { position: relative; display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.cta-copy h2 { font-family: var(--font-display); text-transform: uppercase; font-size: clamp(2rem, 4.4vw, 3.2rem); font-weight: 700; margin-bottom: 16px; }
.cta-copy p { font-size: 1.2rem; color: #d3ddf3; margin: 0; max-width: 460px; }

.contact-cards { display: grid; gap: 18px; }
.contact-card {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto;
  column-gap: 16px; align-items: center;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius); padding: 22px 26px; transition: all 0.28s var(--ease);
}
.contact-card:hover { background: rgba(255,255,255,0.12); transform: translateY(-3px); border-color: var(--blue); }
.contact-icon { grid-row: 1 / 3; width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; background: var(--blue); color: #fff; }
.contact-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.14em; font-weight: 700; color: #8fbdf6; }
.contact-value { font-size: 1.2rem; font-weight: 700; color: #fff; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-2); color: #c2c9d7; padding: 64px 0 0; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand { color: #fff; }
.footer-brand .brand-mark { color: #fff; }
.footer-tagline { font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.14em; font-size: 1.05rem; color: #8fbdf6; margin: 18px 0 20px; }
.footer-contact { display: flex; flex-direction: column; gap: 6px; }
.footer-contact a { color: #c2c9d7; font-weight: 600; transition: color 0.2s ease; }
.footer-contact a:hover { color: var(--blue); }

.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col h4 { font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.95rem; color: #fff; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 11px; }
.footer-col a { color: #aeaebc; font-size: 0.98rem; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--blue); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 22px 24px; }
.footer-bottom p { margin: 0; font-size: 0.9rem; color: var(--muted-2); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .main-nav, .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: block; }
  .thesis-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .approach-grid { grid-template-columns: 1fr; gap: 20px; }
  .cta-inner { grid-template-columns: 1fr; gap: 34px; }
  .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .section { padding: 68px 0; }
  .hero-inner { padding: 88px 24px 92px; }
  .service-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .btn { width: 100%; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}