/* ============================================================
   Tochene — layout layer
   Page chrome (header, footer), hero, section rhythm and grids.
   ============================================================ */

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  transition: background-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  height: var(--header-h);
  transition: height var(--dur-base) var(--ease-out);
}

/* Solid state — after the first scroll, or on pages with no hero */
.site-header.is-solid {
  background: rgba(251, 249, 245, 0.86);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--rule);
  box-shadow: 0 1px 24px rgba(7, 15, 24, 0.05);
}

.site-header.is-solid .site-header__inner {
  height: var(--header-h-scrolled);
}

/* Over a dark hero, before scrolling */
.site-header.is-transparent .brand__name,
.site-header.is-transparent .brand__sub {
  color: var(--white);
}

.site-header.is-transparent .nav__link {
  color: rgba(255, 255, 255, 0.82);
}

.site-header.is-transparent .nav__link:hover,
.site-header.is-transparent .nav__link[aria-current='page'] {
  color: var(--white);
}

.site-header.is-transparent .nav-toggle__bar {
  background: var(--white);
}

/* ---- Brand ---- */
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-right: auto;
  flex-shrink: 0;
}

.brand__mark {
  width: 30px;
  height: auto;
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease-spring);
}

/* The mark ships in two colourways: blue+white for dark backgrounds and
   blue+navy for light ones. Both are in the DOM and CSS picks the right one,
   so the header can change state without a second network request. */
.brand__mark--on-dark {
  display: none;
}

.site-header.is-transparent .brand__mark--on-dark,
.site-footer .brand__mark--on-dark {
  display: block;
}

.site-header.is-transparent .brand__mark--on-light,
.site-footer .brand__mark--on-light {
  display: none;
}

.brand:hover .brand__mark {
  transform: translateY(-2px) rotate(-2deg);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.32rem;
  font-weight: 600;
  letter-spacing: 0.055em;
  text-transform: uppercase;
  color: var(--navy-900);
  font-variation-settings: 'opsz' 40, 'SOFT' 0, 'WONK' 0;
  transition: color var(--dur-base) var(--ease-out);
}

.brand__sub {
  font-size: 0.53rem;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-top: 3px;
  transition: color var(--dur-base) var(--ease-out);
}

/* ---- Primary nav ---- */
.nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.5vw, 2.25rem);
}

.nav__link {
  position: relative;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--slate-600);
  padding-block: 0.4rem;
  transition: color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 100%;
  background: var(--brass-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}

.nav__link:hover,
.nav__link[aria-current='page'] {
  color: var(--navy-900);
}

.nav__link:hover::after,
.nav__link[aria-current='page']::after {
  transform: scaleX(1);
}

/* ---- Mobile menu ---- */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: calc(var(--z-overlay) + 2);
}

.nav-toggle__bars {
  display: grid;
  gap: 6px;
  width: 24px;
}

.nav-toggle__bar {
  height: 1.5px;
  background: var(--navy-900);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out),
              background-color var(--dur-base) var(--ease-out);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

.nav-panel {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--navy-950);
  color: var(--fg-invert);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-2xl) var(--gutter);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-2%);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              visibility 0s linear var(--dur-base);
}

.nav-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0s;
}

.nav-panel__list {
  display: grid;
  gap: 0.25rem;
}

.nav-panel__link {
  font-family: var(--font-display);
  font-size: clamp(2rem, 9vw, 3.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  padding-block: 0.35rem;
  display: block;
  color: var(--fg-invert);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.nav-panel.is-open .nav-panel__link {
  opacity: 1;
  transform: none;
  transition-delay: calc(var(--i, 0) * 70ms + 90ms);
}

.nav-panel__link:hover {
  color: var(--brass-400);
}

.nav-panel__footer {
  margin-top: var(--space-xl);
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--fg-invert-muted);
}

.nav-panel__footer a:hover {
  color: var(--brass-400);
}

@media (max-width: 900px) {
  .nav,
  .site-header .btn--header {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--navy-950);
  isolation: isolate;
}

.hero--short {
  min-height: min(78svh, 720px);
}

.hero__media {
  position: absolute;
  inset: -6% 0 -6% 0;
  z-index: -2;
  will-change: transform;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  /* Promote the animated bitmap so the GPU scales an existing raster instead
     of the browser re-rasterising a 1920px image every frame of the drift. */
  will-change: transform;
  backface-visibility: hidden;
}

/* Ken-Burns: slow, continuous, barely perceptible. Stops entirely for
   reduced-motion users (see motion.css). */
.hero__media.is-kenburns img {
  animation: kenburns 26s var(--ease-in-out) infinite alternate;
}

@keyframes kenburns {
  from {
    transform: scale(1) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.085) translate3d(-1.2%, -1%, 0);
  }
}

.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(to top, rgba(7, 15, 24, 0.94) 0%, rgba(7, 15, 24, 0.55) 38%, rgba(7, 15, 24, 0.24) 68%, rgba(7, 15, 24, 0.5) 100%),
    radial-gradient(120% 80% at 12% 88%, rgba(7, 15, 24, 0.7) 0%, transparent 60%);
}

.hero__inner {
  position: relative;
  width: 100%;
  padding-block: clamp(6rem, 14vh, 9rem) clamp(2rem, 5vh, 3rem);
  color: var(--fg-invert);
}

.hero__eyebrow {
  color: var(--brass-300);
}

.hero__title {
  margin-top: var(--space-md);
  font-size: var(--step-6);
  line-height: 0.98;
  letter-spacing: -0.03em;
  max-width: 16ch;
  color: var(--white);
}

.hero__title em {
  font-style: italic;
  font-variation-settings: 'opsz' 144, 'SOFT' 40, 'WONK' 1;
  color: var(--brass-300);
}

.hero__lede {
  margin-top: var(--space-md);
  max-width: 54ch;
  font-size: var(--step-1);
  line-height: 1.55;
  color: rgba(238, 243, 247, 0.82);
}

.hero__actions {
  margin-top: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Floating stat bar along the bottom of the hero */
.hero__stats {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule-invert);
  border: 1px solid var(--rule-invert);
  border-radius: var(--radius-md);
  overflow: hidden;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.hero__stat {
  background: rgba(7, 15, 24, 0.42);
  padding: 1.05rem 1.25rem;
}

.hero__stat-value {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--white);
  font-variation-settings: 'opsz' 96, 'SOFT' 0, 'WONK' 0;
}

.hero__stat-label {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(238, 243, 247, 0.6);
}

@media (max-width: 760px) {
  .hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Scroll cue */
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}

.scroll-cue svg {
  width: 15px;
  height: 15px;
  animation: cue-bounce 2s var(--ease-in-out) infinite;
}

.scroll-cue.is-hidden {
  opacity: 0;
}

@keyframes cue-bounce {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.5;
  }
  50% {
    transform: translateY(6px);
    opacity: 1;
  }
}

@media (max-width: 900px) {
  .scroll-cue {
    display: none;
  }
}

/* ============================================================
   Page head — for pages with no photographic hero
   ============================================================ */
.page-head {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(3rem, 8vw, 5.5rem));
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
  background: var(--navy-950);
  color: var(--fg-invert);
  overflow: hidden;
}

.page-head::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 120% at 88% 10%, rgba(31, 111, 120, 0.28) 0%, transparent 58%);
  pointer-events: none;
}

.page-head .shell {
  position: relative;
  z-index: 1;
}

.page-head__title {
  margin-top: var(--space-sm);
  color: var(--white);
}

.page-head__lede {
  margin-top: var(--space-sm);
  max-width: 62ch;
  color: var(--fg-invert-muted);
  font-size: var(--step-1);
}

/* ============================================================
   Section headers
   ============================================================ */
.section-head {
  display: grid;
  gap: var(--space-sm);
  max-width: 62ch;
  margin-bottom: var(--space-xl);
}

.section-head--split {
  max-width: none;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: end;
  gap: var(--space-lg);
}

.section-head--split .section-head__aside {
  color: var(--fg-muted);
  font-size: var(--step-0);
  padding-bottom: 0.35rem;
}

@media (max-width: 860px) {
  .section-head--split {
    grid-template-columns: 1fr;
  }
}

.section-head h2 {
  margin-top: 0.4rem;
}

/* ============================================================
   Grids
   ============================================================ */
.grid {
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 2rem);
}

/* Grids are explicit rather than auto-fit: the content counts are known
   (4 property cards, 3 cross-links, 4 features), so a deterministic column
   count avoids the orphaned-card layout auto-fit produces at wide widths. */
.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 1024px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .grid--2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.split--media-first {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

@media (max-width: 900px) {
  .split,
  .split--media-first {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--navy-950);
  color: var(--fg-invert-muted);
  padding-top: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass-500), transparent);
  opacity: 0.55;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 0.8fr)) minmax(0, 1fr);
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
}

@media (max-width: 1000px) {
  .site-footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

.site-footer__brand .brand__name {
  color: var(--white);
}

.site-footer__brand .brand__sub {
  color: var(--fg-invert-muted);
}

.site-footer__blurb {
  margin-top: var(--space-md);
  max-width: 34ch;
  font-size: 0.92rem;
  line-height: 1.6;
}

.site-footer__heading {
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brass-400);
  margin-bottom: var(--space-sm);
}

.site-footer__list {
  display: grid;
  gap: 0.55rem;
  font-size: 0.92rem;
}

.site-footer__list a {
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer__list a:hover {
  color: var(--white);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-block: var(--space-md);
  border-top: 1px solid var(--rule-invert);
  font-size: 0.82rem;
}

.site-footer__legal {
  color: var(--slate-400);
}

/* Back to top */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: var(--z-sticky);
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--navy-900);
  color: var(--white);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
}

.to-top.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.to-top:hover {
  background: var(--brass-600);
}

/* ============================================================
   Mobile sticky action bar (property pages)
   ============================================================ */
.tour-bar {
  position: fixed;
  inset: auto 0 0 0;
  z-index: var(--z-sticky);
  display: none;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.7rem var(--gutter) calc(0.7rem + env(safe-area-inset-bottom, 0px));
  background: rgba(11, 27, 43, 0.96);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--rule-invert);
  transform: translateY(110%);
  transition: transform var(--dur-base) var(--ease-out);
}

.tour-bar.is-visible {
  transform: none;
}

.tour-bar__text {
  flex: 1;
  min-width: 0;
  color: var(--fg-invert);
  font-size: 0.85rem;
  line-height: 1.3;
}

.tour-bar__text strong {
  display: block;
  font-size: 0.92rem;
}

.tour-bar__text span {
  color: var(--fg-invert-muted);
}

@media (max-width: 760px) {
  .tour-bar {
    display: flex;
  }
}