/* ============================================================
   EXLNS website UI kit — structural layout helpers
   (Visual tokens come from ../../styles.css; this file is only
   layout/hover/media that inline styles can't express.)
   ============================================================ */

.site { background: transparent; color: var(--text-body); min-height: 100%; position: relative; z-index: 1; }
.container { max-width: 1200px; margin: 0 auto; padding-inline: var(--gutter); }
.container--narrow { max-width: 860px; }
.section { padding-block: clamp(4rem, 8vw, 8.5rem); }
.section--tight { padding-block: clamp(3rem, 5vw, 5rem); }

/* ---------- ambient iridescence (fixed, behind everything) ---------- */
.ambient { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.ambient i {
  position: absolute; display: block; border-radius: 50%; will-change: transform;
}
.ambient i:nth-child(1) {
  width: 70vw; height: 70vw; left: -18vw; top: -22vw;
  background: radial-gradient(closest-side, rgba(230,198,201,0.34), transparent 72%);
  animation: ambient-a 46s var(--ease-in-out) infinite alternate;
}
.ambient i:nth-child(2) {
  width: 64vw; height: 64vw; right: -20vw; top: 18vh;
  background: radial-gradient(closest-side, rgba(214,205,233,0.32), transparent 72%);
  animation: ambient-b 58s var(--ease-in-out) infinite alternate;
}
.ambient i:nth-child(3) {
  width: 58vw; height: 58vw; left: 12vw; bottom: -28vw;
  background: radial-gradient(closest-side, rgba(197,226,224,0.30), transparent 72%);
  animation: ambient-c 52s var(--ease-in-out) infinite alternate;
}
@keyframes ambient-a { to { transform: translate(9vw, 7vh) scale(1.12); } }
@keyframes ambient-b { to { transform: translate(-8vw, -6vh) scale(1.08); } }
@keyframes ambient-c { to { transform: translate(6vw, -8vh) scale(1.15); } }
@media (prefers-reduced-motion: reduce){ .ambient i { animation: none; } }

.hero-hint {
  position: absolute; bottom: 52px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--text-faint); transition: opacity 400ms ease;
}
.hero-hint::after { content: ''; display: block; width: 1px; height: 22px; margin: 8px auto 0;
  background: linear-gradient(var(--ink-300), transparent); animation: hint-drift 1.8s var(--ease-in-out) infinite; }
@keyframes hint-drift { 0%{transform:translateY(-4px);opacity:.3} 50%{opacity:1} 100%{transform:translateY(4px);opacity:.3} }
@media (prefers-reduced-motion: reduce){ .hero-hint::after { animation: none; } }

/* ---------- elevated sections ---------- */
.pillar-row { display: grid; grid-template-columns: 56px 1fr; gap: 1.4rem; padding: 1.9rem 0 1.9rem 0.2rem;
  border-top: 1px solid var(--border-soft); position: relative; transition: padding-left 360ms var(--ease-out-soft); }
.pillar-row::before { content: ''; position: absolute; left: 0; top: -1px; height: 1px; width: 0;
  background: var(--grad-line-glow); transition: width 700ms var(--ease-out-soft); }
.pillar-row:hover { padding-left: 0.9rem; }
.pillar-row:hover::before { width: 100%; }

.svc-row { display: grid; grid-template-columns: 64px 1fr auto 44px; gap: 1.6rem; align-items: center;
  padding: 1.7rem 0.6rem; border-top: 1px solid var(--border-soft); cursor: pointer; border-radius: var(--radius-md);
  transition: background 320ms var(--ease-standard), transform 320ms var(--ease-out-soft); }
.svc-row:hover { background: rgba(252,249,244,0.85); transform: translateX(6px); }
.svc-row__arrow { font-family: var(--font-mono); color: var(--champagne-ink); opacity: 0;
  transform: translateX(-8px); transition: opacity 280ms ease, transform 280ms var(--ease-out-soft); }
.svc-row:hover .svc-row__arrow { opacity: 1; transform: translateX(0); }

.work-card { border-radius: var(--radius-xl); overflow: hidden; background: var(--surface-card);
  border: 1px solid var(--border-hairline); box-shadow: var(--shadow-sm); cursor: pointer; height: 100%;
  display: flex; flex-direction: column;
  transition: transform 360ms var(--ease-out-soft), box-shadow 360ms var(--ease-out-soft); }
.work-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.work-card__media { height: 170px; overflow: hidden; flex: none; position: relative; }
.work-card__media img { width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform 900ms var(--ease-out-soft); }
.work-card:hover .work-card__media img { transform: scale(1.06); }
.work-card__body { padding: 1.5rem 1.6rem 1.7rem; display: flex; flex-direction: column; gap: 0.7rem; flex: 1; }

.hiw { position: relative; }
.hiw__spine { position: absolute; left: 0; right: 0; top: 5px; height: 2px; border-radius: 1px;
  background: var(--grad-line-glow); box-shadow: var(--glow-champagne); }
.hiw__dot { width: 12px; height: 12px; border-radius: 50%; background: var(--champagne-deep);
  box-shadow: var(--glow-champagne); position: relative; z-index: 1; }

.ins-row { transition: transform 300ms var(--ease-out-soft); }
.ins-row:hover { transform: translateX(8px); }
.ins-row__go { color: var(--champagne-ink); opacity: 0; transition: opacity 240ms ease; font-family: var(--font-mono); }
.ins-row:hover .ins-row__go { opacity: 1; }

/* ---------- conversion + responsive helpers ---------- */
/* .split: any two-column editorial grid collapses to one column on mobile.
   (Inline grid-template-columns set the desktop ratio; !important wins here.) */
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr !important; }
  .svc-row { grid-template-columns: 44px 1fr; }
  .svc-row > :nth-child(3), .svc-row > :nth-child(4) { display: none; }
  .principle-row { grid-template-columns: 44px 1fr !important; }
  .principle-row h3 { grid-column: 2; }
  .principle-row p { grid-column: 2; }
  .ins-item { grid-template-columns: 1fr !important; gap: 0.5rem !important; }
}
@media (max-width: 560px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .case-stats { grid-template-columns: 1fr 1fr !important; }
  .footer__row { flex-direction: column; gap: 2rem; }
}
.trust-strip { display: flex; gap: 1.5rem 2rem; flex-wrap: wrap; justify-content: center;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .05em; color: var(--text-muted); }
.trust-strip b { color: var(--champagne-ink); font-weight: 600; }
.assure { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em;
  color: var(--text-faint); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(248,243,235,0.72);
  -webkit-backdrop-filter: blur(16px) saturate(1.1); backdrop-filter: blur(16px) saturate(1.1);
  border-bottom: 1px solid var(--border-hairline);
  transition: box-shadow 300ms var(--ease-out-soft);
}
.nav--scrolled { box-shadow: var(--shadow-sm); }
.nav__row { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 2rem; }
.nav__brand { display: flex; align-items: center; gap: 11px; cursor: pointer; text-decoration: none; }
.nav__brand-txt { font-family: var(--font-mono); font-weight: 600; font-size: 18px;
  letter-spacing: 0.26em; text-transform: uppercase; color: var(--text-strong); padding-left: .26em; }
.nav__links { display: flex; align-items: center; gap: 2rem; }
.nav__link { font-family: var(--font-sans); font-size: 15px; font-weight: 500; color: var(--text-muted);
  cursor: pointer; background: none; border: 0; padding: 0; position: relative; white-space: nowrap;
  text-decoration: none; transition: color var(--dur-base) var(--ease-standard); }
.nav__link:hover { color: var(--text-strong); }
.nav__link--active { color: var(--text-strong); }
.nav__link--active::after { content: ''; position: absolute; left: 0; right: 0; bottom: -26px; height: 2px;
  background: var(--grad-line-glow); }

/* ---- mobile menu toggle + panel ---- */
.nav__toggle { display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; margin: -6px; padding: 0 9px; background: none; border: 0; cursor: pointer; }
.nav__toggle-bar { display: block; height: 2px; width: 22px; border-radius: 2px; background: var(--text-strong);
  transition: transform 280ms var(--ease-out-soft), opacity 200ms ease; }
.nav--open .nav__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav--open .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav--open .nav__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav__mobile { overflow: hidden; max-height: 0; opacity: 0; visibility: hidden;
  border-top: 1px solid transparent; background: rgba(248,243,235,0.94);
  -webkit-backdrop-filter: blur(16px) saturate(1.1); backdrop-filter: blur(16px) saturate(1.1);
  transition: max-height 360ms var(--ease-out-soft), opacity 260ms ease, visibility 0s linear 360ms; }
.nav__mobile--open { max-height: 70vh; opacity: 1; visibility: visible;
  border-top-color: var(--border-hairline); transition: max-height 380ms var(--ease-out-soft), opacity 260ms ease; }
.nav__mobile-inner { display: flex; flex-direction: column; gap: 0.35rem; padding-block: 1rem 1.4rem; }
.nav__mobile-link { font-family: var(--font-sans); font-size: 17px; font-weight: 500; color: var(--text-muted);
  text-decoration: none; padding: 0.7rem 0; border-bottom: 1px solid var(--border-hairline);
  transition: color var(--dur-base) var(--ease-standard); }
.nav__mobile-link:hover, .nav__mobile-link--active { color: var(--text-strong); }
.nav__mobile-inner button { margin-top: 1rem; align-self: flex-start; }
.nav__toggle:focus-visible, .nav__mobile-link:focus-visible {
  outline: 2px solid var(--champagne-ink); outline-offset: 3px; border-radius: 4px; }

@media (max-width: 860px){ .nav__links { display: none; } .nav__toggle { display: flex; } }
@media (min-width: 861px){ .nav__mobile { display: none; } }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border-hairline); background: var(--paper-100); }
.footer__row { display: flex; justify-content: space-between; gap: 3rem; padding-block: 3.5rem 2.5rem; flex-wrap: wrap; }
.footer__col h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--text-faint); margin: 0 0 1rem; font-weight: 500; }
.footer__col a { display: block; font-family: var(--font-sans); font-size: 15px; color: var(--text-muted);
  text-decoration: none; margin-bottom: .6rem; cursor: pointer; transition: color var(--dur-base) var(--ease-standard); }
.footer__col a:hover { color: var(--text-strong); }
.footer__base { display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding-block: 1.5rem 2.5rem; border-top: 1px solid var(--border-hairline); flex-wrap: wrap; }
.footer__mono { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); letter-spacing: .02em; }

/* ---------- shared bits ---------- */
.eyebrow-row { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
@media (max-width: 860px){ .grid-3,.grid-4 { grid-template-columns: 1fr 1fr; } .grid-2 { grid-template-columns: 1fr; } }

.display-h1 { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.025em; line-height: 1.02;
  color: var(--text-strong); font-size: clamp(2.6rem, 5.6vw, 4.6rem); margin: 0; text-wrap: balance; }
.display-h2 { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.02em; line-height: 1.08;
  color: var(--text-strong); font-size: clamp(2rem, 3.6vw, 3.1rem); margin: 0; text-wrap: balance; }
.lead { font-family: var(--font-sans); font-size: clamp(1.05rem, 1.5vw, 1.3rem); line-height: 1.55;
  color: var(--text-muted); max-width: 56ch; }
.muted { color: var(--text-muted); }
.serif-q { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.01em; line-height: 1.2; color: var(--text-strong); }
.link-mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: .04em; color: var(--champagne-ink);
  cursor: pointer; display: inline-flex; align-items: center; gap: .5em; background: none; border: 0; padding: 0; }
.link-mono:hover { gap: .8em; transition: gap var(--dur-base) var(--ease-standard); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease-out-soft), transform .7s var(--ease-out-soft); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){ .reveal { opacity: 1; transform: none; } }

/* ---- Hero atmospheric video ---- */
.hero-video-wrap { position: absolute; inset: 0; overflow: hidden; pointer-events: none;
  transform: scale(1.08); animation: heroDrift 32s ease-in-out infinite alternate; will-change: transform; }
.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transform: scale(1.01); transition: opacity 1.6s var(--ease-out-soft); will-change: opacity; }
.hero-video.is-ready { opacity: 0.5; }
.hero-video-wash { position: absolute; inset: 0; pointer-events: none; background:
  linear-gradient(180deg, rgba(248,243,235,0.66), rgba(248,243,235,0.40) 42%, rgba(248,243,235,0.78));
  mix-blend-mode: normal; }
@keyframes heroDrift {
  from { transform: scale(1.06) translate3d(0, 0, 0); }
  to   { transform: scale(1.14) translate3d(-1.4%, -1.6%, 0); }
}
@media (prefers-reduced-motion: reduce){
  .hero-video-wrap { animation: none; transform: scale(1.04); }
  .hero-video.is-ready { opacity: 0.42; }
}