/* Structavia — rift/offset split type + staggered cards
   Palette from the logo towers: steel #1f628d on paper white. */

:root {
  --steel:        #1f628d;
  --steel-mid:    #2a5e83;
  --steel-lift:   #3478a8;
  --steel-deep:   #0f2d42;
  --ink:          #123246;
  --mist:         #d4e4ee;
  --line:         #c5d6e0;
  --line-soft:    #dce8ef;
  --paper:        #f4f8fa;
  --paper-2:      #e8f0f5;
  --white:        #ffffff;
  --on-dark:      #f3f7fa;
  --on-dark-dim:  #c5d5e0;
  --ease:         cubic-bezier(.22, .61, .36, 1);
  --maxw:         1120px;
  --header-h:     72px;
  --serif:        "Zilla Slab", "Palatino Linotype", Palatino, serif;
  --sans:         "Cabin", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

html, body { overflow-x: hidden; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .brand-name, blockquote, .type-a, .type-b, .card-id {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0;
}

h1 { font-size: clamp(2.4rem, 6.4vw, 5.1rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.35rem); }
h3 { font-size: 1.22rem; font-weight: 600; }

p { margin: 0; overflow-wrap: break-word; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; }
li { list-style: none; overflow-wrap: break-word; }
button { font: inherit; color: inherit; }

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

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 400;
  background: var(--steel-deep); color: var(--on-dark);
  padding: 10px 16px; font-weight: 700;
}
.skip-link:focus { left: 0; }

.industry {
  display: inline-block;
  margin: 0 0 10px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--steel-mid);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

.lede {
  margin-top: 16px;
  color: var(--steel-mid);
  max-width: 48ch;
}

.chip {
  display: inline-block;
  margin: 0 0 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 22px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
    background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn-primary {
  background: var(--steel);
  color: var(--on-dark);
  box-shadow: 0 12px 24px -14px rgba(31, 98, 141, .55);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

/* Header: dark steel, near-white type */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  background: var(--steel-deep);
  color: var(--on-dark);
  border-bottom: 1px solid transparent;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.site-header.scrolled {
  background: rgba(15, 45, 66, .94);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom-color: rgba(243, 247, 250, .08);
}
.header-inner {
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--on-dark); }
.brand img {
  width: 40px; height: 40px;
  border-radius: 4px;
  background: var(--white);
}
.brand-name {
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

.nav { display: flex; align-items: center; gap: 26px; }
.nav a {
  font-size: 15px;
  color: var(--on-dark-dim);
  font-weight: 600;
  transition: color .2s var(--ease);
}
.nav .nav-cta {
  color: var(--steel-deep);
  background: var(--on-dark);
  padding: 8px 14px;
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: 0; cursor: pointer; padding: 8px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--on-dark);
  border-radius: 1px;
  transition: transform .3s var(--ease), opacity .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); }

/* ===== Hero: offset type across a drawing rift ===== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 40px) 0 28px;
  background:
    linear-gradient(180deg, var(--white) 0%, var(--paper) 100%);
  overflow: hidden;
}

.rift-lockup {
  position: relative;
  margin-top: 8px;
}

.rift-type {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 56px;
  min-height: min(58vh, 520px);
  position: relative;
  z-index: 1;
}

.type-a,
.type-b {
  display: block;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.type-a {
  grid-column: 1;
  align-self: start;
  text-align: right;
  padding: 6vh 8px 0 0;
  max-width: 11ch;
  margin-left: auto;
}

.type-b {
  grid-column: 2;
  align-self: end;
  text-align: left;
  padding: 0 0 7vh 8px;
  max-width: 12ch;
  color: var(--steel);
}

/* Vertical joint that draws on load; horizontal twin for mobile */
.rift-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 28px;
  transform: translateX(-50%);
  z-index: 2;
  pointer-events: none;
}
.rift-v, .rift-h {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}
.rift-h { display: none; }

.rift-draw {
  fill: none;
  stroke: var(--steel);
  stroke-width: 2;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-dasharray: 560;
  stroke-dashoffset: 560;
  animation: riftDraw 1.7s var(--ease) forwards;
}
.rift-draw-soft {
  stroke: var(--mist);
  stroke-width: 1.25;
  animation-delay: .18s;
}

.rift-tick {
  position: absolute;
  left: 50%;
  top: 0;
  width: 9px;
  height: 9px;
  margin-left: -4.5px;
  background: var(--steel);
  box-shadow: 0 0 0 3px var(--white);
  opacity: 0;
  animation: tickFall 3.6s var(--ease) 1.7s infinite;
}
.rift-label {
  position: absolute;
  top: 46%;
  left: 22px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
  white-space: nowrap;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  opacity: 0;
  animation: labelIn .6s var(--ease) 1.5s forwards;
}

.hero-below {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 24px;
  align-items: end;
  padding: 28px 0 12px;
  border-top: 1px solid var(--line-soft);
  margin-top: 8px;
}
.hero-below .lede { margin-top: 0; }
.hero-actions {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: flex-end;
}

@keyframes riftDraw {
  to { stroke-dashoffset: 0; }
}
@keyframes tickFall {
  0%   { top: 0; opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { top: calc(100% - 9px); opacity: 0; }
}
@keyframes labelIn {
  to { opacity: 1; }
}

/* ===== Staggered cards ===== */
.stag-band {
  padding: 72px 0 88px;
  background: var(--paper);
}
.section-head { margin-bottom: 40px; max-width: 40rem; }
.section-head h2 { margin-bottom: 10px; }

.stag-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}
.stag-card {
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--steel);
  padding: 26px 24px 28px;
  min-width: 0;
  margin-top: var(--shift, 0px);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.card-id {
  display: block;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--steel);
  margin-bottom: 10px;
  font-weight: 600;
}
.stag-card h3 { margin-bottom: 10px; }
.stag-card p { color: var(--steel-mid); font-size: 15.5px; }

/* ===== About: paper copy + steel plate ===== */
.about-band {
  padding: 80px 0;
  background: var(--white);
  border-top: 1px solid var(--line-soft);
}
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 40px;
  align-items: start;
}
.about-copy h2 { margin-bottom: 18px; max-width: 18ch; }
.about-copy p + p { margin-top: 14px; color: var(--steel-mid); }

.datum-plate {
  background: var(--steel-deep);
  color: var(--on-dark);
  padding: 26px 26px 10px;
  border: 1px solid rgba(243, 247, 250, .12);
  position: relative;
}
.datum-plate::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 3px;
  background: var(--steel-lift);
}
.plate-head {
  display: flex; justify-content: space-between; gap: 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
  padding-bottom: 16px;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(243, 247, 250, .12);
}
.plate-list { margin: 0; }
.plate-list > div {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(243, 247, 250, .1);
}
.plate-list dt {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
}
.plate-list dd {
  margin: 0;
  color: var(--on-dark);
  font-family: var(--serif);
  font-weight: 600;
}

/* Quote: dark band, near-white type */
.quote-band {
  background: var(--steel-deep);
  color: var(--on-dark);
  padding: 76px 0;
}
.quote { margin: 0; max-width: 38rem; }
.quote blockquote {
  font-size: clamp(1.55rem, 3.1vw, 2.2rem);
  font-weight: 500;
  font-style: italic;
  line-height: 1.35;
  color: var(--on-dark);
}
.quote figcaption {
  margin-top: 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
  font-family: var(--sans);
  font-style: normal;
}

/* Who we work with */
.who-band {
  padding: 72px 0;
  background: var(--paper);
}
.who-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.who-card {
  background: var(--white);
  border: 1px solid var(--line-soft);
  padding: 26px 24px;
  min-width: 0;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.who-card:nth-child(2) { margin-top: 28px; }
.who-card:nth-child(3) { margin-top: 56px; }
.who-card h3 { margin-bottom: 10px; }
.who-card p { color: var(--steel-mid); font-size: 15.5px; }

/* FAQ */
.faq-band {
  padding: 72px 0;
  background: var(--white);
  border-top: 1px solid var(--line-soft);
}
.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: 40px;
  align-items: start;
}
.faq-intro h2 { margin-bottom: 10px; }
.faq-list { display: grid; gap: 0; min-width: 0; }
.faq-item { border-bottom: 1px solid var(--line-soft); }
.faq-item:first-child { border-top: 1px solid var(--line-soft); }
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: none; border: 0; cursor: pointer;
  text-align: left;
  padding: 18px 0;
  font-weight: 700;
  font-size: 1.05rem;
  font-family: var(--serif);
  transition: color .2s var(--ease);
}
.faq-ico {
  position: relative;
  width: 14px; height: 14px;
  flex: 0 0 14px;
}
.faq-ico::before, .faq-ico::after {
  content: "";
  position: absolute;
  background: var(--steel);
  transition: transform .2s var(--ease);
}
.faq-ico::before { width: 14px; height: 2px; top: 6px; left: 0; }
.faq-ico::after { width: 2px; height: 14px; top: 0; left: 6px; }
.faq-item.open .faq-ico::after { transform: scaleY(0); }
.faq-a { display: none; padding: 0 0 18px; }
.faq-item.open .faq-a { display: block; }
.faq-a p { color: var(--steel-mid); max-width: 52ch; }

/* Contact: dark copy, paper card */
.contact-band {
  background: var(--steel-deep);
  color: var(--on-dark);
  padding: 80px 0;
}
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 36px;
  align-items: center;
}
.contact-band .eyebrow { color: var(--on-dark-dim); }
.contact-band .lede { color: var(--on-dark-dim); }
.contact-band h2 { color: var(--on-dark); }
.contact-email {
  display: inline-block;
  margin-top: 22px;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2.6vw, 1.7rem);
  color: var(--on-dark);
  border-bottom: 1px solid rgba(243, 247, 250, .35);
  padding-bottom: 4px;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
  overflow-wrap: anywhere;
}
.contact-card {
  background: var(--white);
  color: var(--ink);
  padding: 28px;
  border: 1px solid var(--line-soft);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.contact-card h3 { margin-bottom: 8px; }
.contact-card p { color: var(--steel-mid); }
.contact-card .btn { margin-top: 18px; }
.addr { margin-top: 18px; font-size: 15px; color: var(--ink) !important; }

/* Footer */
.site-footer {
  background: var(--ink);
  color: var(--on-dark);
  padding: 48px 0 28px;
  border-top: 1px solid rgba(243, 247, 250, .08);
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 28px; flex-wrap: wrap;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(243, 247, 250, .08);
}
.footer-tag { color: var(--on-dark-dim); margin-top: 12px; font-size: .95rem; }
.footer-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-nav a { color: var(--on-dark-dim); font-size: 15px; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  color: var(--on-dark-dim); font-size: 14px; padding-top: 20px;
}
.site-footer .brand { color: var(--on-dark); }

/* Reveal MUST sit before hover transforms */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .rift-draw, .rift-tick, .rift-label {
    animation: none !important;
  }
  .rift-draw { stroke-dashoffset: 0; }
  .rift-tick, .rift-label { opacity: 1; }
  .rift-tick { top: calc(50% - 4px); }
}

/* Hover AFTER .reveal.in so lift is not overwritten */
@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    transform: translateY(-3px);
    background: var(--steel-lift);
    box-shadow: 0 16px 32px -12px rgba(31, 98, 141, .55);
  }
  .btn-ghost:hover {
    transform: translateY(-3px);
    border-color: var(--ink);
    background: var(--white);
  }
  .nav a:hover { color: var(--on-dark); }
  .nav .nav-cta:hover {
    background: var(--paper-2);
    transform: translateY(-2px);
  }
  .stag-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 22px 40px -24px rgba(18, 50, 70, .4);
    border-top-color: var(--ink);
  }
  .who-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 22px 40px -24px rgba(18, 50, 70, .4);
  }
  .datum-plate:hover {
    transform: translateY(-4px);
    box-shadow: 0 22px 40px -24px rgba(15, 45, 66, .55);
  }
  .faq-q:hover { color: var(--steel); }
  .faq-item:hover { background: var(--paper); }
  .contact-email:hover {
    border-bottom-color: var(--on-dark);
    transform: translateY(-2px);
  }
  .contact-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 22px 40px -24px rgba(15, 45, 66, .55);
  }
  .footer-nav a:hover { color: var(--on-dark); }
}

/* Tablet */
@media (max-width: 980px) {
  .rift-type { column-gap: 40px; min-height: min(50vh, 440px); }
  .hero-below,
  .about-grid,
  .faq-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .hero-actions { justify-content: flex-start; }
  .stag-grid { grid-template-columns: 1fr 1fr; }
  .stag-card { margin-top: 0; }
  .stag-card:nth-child(even) { margin-top: 36px; }
  .who-grid { grid-template-columns: 1fr; }
  .who-card:nth-child(2),
  .who-card:nth-child(3) { margin-top: 0; }
}

/* Mobile ~390px: stacked, even spacing, no overflow */
@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  .hero { padding: calc(var(--header-h) + 24px) 0 20px; }
  .stag-band, .about-band, .who-band, .faq-band { padding: 52px 0; }
  .contact-band, .quote-band { padding: 52px 0; }

  .nav-toggle { display: flex; }
  .nav {
    display: none;
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    background: var(--steel-deep);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 20px;
    border-bottom: 1px solid rgba(243, 247, 250, .08);
  }
  .nav.open { display: flex; }
  .nav a {
    padding: 12px 0;
    border-bottom: 1px solid rgba(243, 247, 250, .08);
    color: var(--on-dark);
  }
  .nav .nav-cta {
    margin-top: 12px;
    text-align: center;
    border-bottom: 0;
  }

  .rift-type {
    display: flex;
    flex-direction: column;
    min-height: 0;
    column-gap: 0;
    gap: 0;
  }
  .type-a, .type-b {
    text-align: left;
    padding: 0;
    max-width: none;
    margin: 0;
    align-self: stretch;
  }
  .type-a { margin-bottom: 0; }
  .type-b { margin-top: 0; }

  .rift-line {
    position: relative;
    left: 0;
    transform: none;
    width: 100%;
    height: 28px;
    margin: 14px 0 18px;
  }
  .rift-v { display: none; }
  .rift-h { display: block; height: 28px; }
  .rift-tick {
    top: 50%;
    margin-top: -4.5px;
    left: 0;
    animation-name: tickSlide;
  }
  .rift-label {
    writing-mode: horizontal-tb;
    transform: none;
    top: -2px;
    left: auto;
    right: 0;
    font-size: 10px;
  }

  .stag-grid { grid-template-columns: 1fr; gap: 14px; }
  .stag-card,
  .stag-card:nth-child(even) { margin-top: 0; }
  .stag-card, .who-card, .contact-card, .datum-plate { padding: 20px; }
  .plate-list > div { grid-template-columns: 1fr; gap: 4px; }
  .contact-email { font-size: 1.12rem; word-break: break-all; }
  .footer-inner, .footer-bottom { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-below { padding-top: 20px; }
}

@keyframes tickSlide {
  0%   { left: 0; opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { left: calc(100% - 9px); opacity: 0; }
}

@media (max-width: 420px) {
  .brand-name { font-size: 1.02rem; }
  h1 { font-size: 2.15rem; }
}