/* ============================================================
   nbk & partner — chrome: header, menu, preloader, cursor,
   footer, legal pages, utilities
   ============================================================ */

/* ============ Header ============ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  color: var(--white);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

/* Solid pine bar once scrolled — on a pseudo-element so the header
   itself never gains backdrop-filter (containing-block trap). */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: color-mix(in oklab, var(--ink-deep) 92%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
}

.site-header.is-scrolled::before {
  opacity: 1;
}

.site-header .wrap {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding-block: 0.9rem;
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

html.nav-open .site-header {
  z-index: calc(var(--z-menu) + 1);
}

html.nav-open .site-header::before {
  opacity: 0;
}

.scroll-progress {
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: var(--brass);
  transform-origin: 0 50%;
  transform: scaleX(0);
}

/* Brand — centered */
.brand {
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  justify-self: center;
}

.brand img {
  width: 2.1rem;
  height: 2.1rem;
}

.brand b {
  display: block;
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--white);
}

.brand b em {
  font-style: normal;
  color: var(--brass);
}

.brand .brand-sub {
  display: block;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--white-60);
  margin-top: 0.3em;
}

@media (max-width: 40rem) {
  .brand .brand-sub {
    display: none;
  }
}

/* Header CTA */
.header-cta {
  grid-column: 3;
  justify-self: end;
  padding: 0.7em 1.5em;
}

@media (max-width: 40rem) {
  .header-cta {
    padding: 0.6em 1.1em;
  }
}

/* Menü-Toggle (always visible) */
.nav-toggle {
  grid-column: 1;
  justify-self: start;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-height: 2.75rem;
  color: var(--white);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
}

@media (max-width: 40rem) {
  .nav-toggle .nav-toggle-label {
    display: none;
  }
}

.nav-toggle .nav-toggle-icon,
.nav-toggle .nav-toggle-icon::before,
.nav-toggle .nav-toggle-icon::after {
  display: block;
  width: 1.5rem;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--duration-normal) var(--ease-snap), opacity var(--duration-fast) ease;
}

.nav-toggle .nav-toggle-icon {
  position: relative;
}

.nav-toggle .nav-toggle-icon::before,
.nav-toggle .nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle .nav-toggle-icon::before {
  top: -0.42rem;
}

.nav-toggle .nav-toggle-icon::after {
  top: 0.42rem;
}

html.nav-open .nav-toggle .nav-toggle-icon {
  transform: rotate(45deg);
}

html.nav-open .nav-toggle .nav-toggle-icon::before {
  transform: rotate(-90deg) translateX(0.42rem);
}

html.nav-open .nav-toggle .nav-toggle-icon::after {
  opacity: 0;
}

/* ============ Fullscreen menu (all viewports) ============ */
.main-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  display: grid;
  place-content: center;
  background: var(--ink-deep);
  clip-path: circle(0% at 2.8rem 2.4rem);
  visibility: hidden;
  transition:
    clip-path 640ms var(--ease-snap),
    visibility 0s 640ms;
}

html.nav-open .main-nav {
  clip-path: circle(150% at 2.8rem 2.4rem);
  visibility: visible;
  transition:
    clip-path 720ms var(--ease-snap),
    visibility 0s;
}

html.nav-open {
  overflow: hidden;
}

.main-nav ul {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: clamp(0.7rem, 1.6vh, 1rem);
  list-style: none;
}

.main-nav .menu-item {
  overflow: clip;
}

.main-nav a:not(.btn) {
  display: inline-block;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 3.4vh, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  padding-bottom: 0.12em;
  background-image: linear-gradient(var(--brass), var(--brass));
  background-size: 0% 3px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--duration-normal) var(--ease-snap), color var(--duration-fast) ease;
}

.main-nav a:not(.btn):hover {
  background-size: 100% 3px;
  color: var(--brass);
}

.main-nav .menu-index {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 0.5em;
  color: var(--brass);
  margin-right: 0.6em;
  vertical-align: 0.5em;
}

.main-nav .btn {
  margin-top: 1.6rem;
}

/* ============ Preloader ============ */
.preloader {
  position: fixed;
  inset: 0;
  z-index: var(--z-preloader);
  display: grid;
  place-items: center;
  background: var(--ink-deep);
  color: var(--white);
}

.preloader-word {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.01em;
}

.preloader-count {
  position: absolute;
  right: var(--gutter);
  bottom: 1.4rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--white-60);
  font-variant-numeric: tabular-nums;
}

.preloader-line {
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: var(--brass);
  transform-origin: 0 50%;
  transform: scaleX(0);
}

html.is-loaded .preloader {
  display: none;
}

html:not(.js) .preloader {
  display: none;
}

/* ============ Custom cursor ============ */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-cursor);
  pointer-events: none;
  border-radius: 50%;
  translate: -50% -50%;
  opacity: 0;
}

html.cursor-active .cursor-dot,
html.cursor-active .cursor-ring {
  opacity: 1;
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--brass-deep);
}

.cursor-ring {
  width: 42px;
  height: 42px;
  border: 1px solid color-mix(in oklab, var(--blue-bright) 55%, transparent);
  transition:
    width 320ms var(--ease-out-expo),
    height 320ms var(--ease-out-expo),
    background-color 320ms ease,
    border-color 320ms ease;
}

html.cursor-hover .cursor-ring {
  width: 64px;
  height: 64px;
  background: color-mix(in oklab, var(--blue-bright) 16%, transparent);
  border-color: color-mix(in oklab, var(--blue-bright) 35%, transparent);
}

@media (hover: none), (pointer: coarse) {
  .cursor-dot,
  .cursor-ring {
    display: none;
  }
}

/* ============ Footer ============ */
.site-footer {
  position: relative;
  background: var(--ink-deep);
  color: var(--white);
  overflow: clip;
}

.footer-word {
  display: block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(1.7rem, 1rem + 2.6vw, 3.4rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-align: center;
  white-space: nowrap;
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  color: var(--white);
  user-select: none;
}

.footer-word em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--brass);
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  padding-block: var(--space-block);
  border-top: 1px solid var(--white-12);
  margin-top: clamp(2.5rem, 6vw, 5rem);
}

@media (min-width: 56rem) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-grid h3 {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 1.1rem;
}

.footer-grid ul {
  display: grid;
  gap: 0.55rem;
  list-style: none;
}

.footer-grid a {
  color: var(--white-60);
  transition: color var(--duration-fast) ease;
}

.footer-grid a:hover {
  color: var(--brass);
}

.footer-about {
  font-size: var(--text-sm);
  color: var(--white-60);
  max-width: 30em;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2.5rem;
  justify-content: space-between;
  padding-block: 1.4rem;
  border-top: 1px solid var(--white-12);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--white-30);
}

/* ============ Legal pages ============ */
.legal-page {
  padding: calc(var(--space-section) + 3rem) 0 var(--space-section);
}

.legal-page h1 {
  font-size: var(--text-h2);
  margin-bottom: 2.5rem;
}

.legal-page h2 {
  font-size: var(--text-h3);
  margin: 2.2em 0 0.6em;
}

.legal-page p,
.legal-page li {
  max-width: 44em;
  color: var(--ink-soft);
}

.legal-page a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* ============ Utilities ============ */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: calc(var(--z-cursor) + 1);
  padding: 0.7em 1.2em;
  background: var(--brass);
  color: var(--ink-deep);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  transform: translateY(-300%);
  transition: transform var(--duration-fast) ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

.grain::before {
  content: "";
  position: absolute;
  inset: -100%;
  z-index: 3;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.05;
}

html.js .grain::before {
  animation: grain-shift 900ms steps(4) infinite;
}

@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 3%); }
  50% { transform: translate(3%, -2%); }
  75% { transform: translate(-1%, -3%); }
  100% { transform: translate(2%, 2%); }
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .cursor-dot,
  .cursor-ring {
    display: none;
  }
}