/**
 * Kunity consultancy — case-study site shell (static mirror of WWW header/footer)
 */

html { scroll-behavior: smooth; }

*, *::before, *::after { box-sizing: border-box; }

.kunity-site {
  margin: 0;
  min-height: 100vh;
}

.kunity-site a {
  color: var(--kunity-graphite);
  text-decoration: underline;
  text-decoration-color: var(--kunity-line);
  text-underline-offset: 0.18em;
}

.kunity-site a:hover {
  color: var(--kunity-accent-text);
  text-decoration-color: var(--kunity-accent);
}

.kunity-site-wrap {
  width: min(100% - 2 * var(--kunity-ref-pad-inner), var(--kunity-ds-shell-max));
  margin-inline: auto;
}

/* Header */

.kunity-site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  padding-top: env(safe-area-inset-top, 0px);
  border-bottom: 1px solid var(--kunity-line-soft);
  background: rgb(238 238 238 / 0.92);
  backdrop-filter: blur(10px);
}

.kunity-site-header__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 0.85rem;
}

.kunity-nav-toggle {
  display: none;
  margin: 0 0 0 auto;
  padding: 0.35rem;
  border: 0;
  background: transparent;
  color: var(--kunity-graphite);
  cursor: pointer;
  line-height: 0;
}

.kunity-nav-toggle:focus-visible {
  outline: 2px solid var(--kunity-accent);
  outline-offset: 3px;
}

.kunity-nav-toggle__icon {
  position: relative;
  display: block;
  width: 1.25rem;
  height: 0.75rem;
}

.kunity-nav-toggle__icon span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition:
    transform 250ms ease,
    opacity 250ms ease,
    top 250ms ease,
    bottom 250ms ease;
}

.kunity-nav-toggle__icon span:nth-child(1) {
  top: 0;
}

.kunity-nav-toggle__icon span:nth-child(2) {
  top: calc(50% - 1px);
}

.kunity-nav-toggle__icon span:nth-child(3) {
  bottom: 0;
}

.kunity-nav-toggle[aria-expanded="true"] .kunity-nav-toggle__icon span:nth-child(1),
.kunity-nav-toggle[aria-expanded="true"] .kunity-nav-toggle__icon span:nth-child(3) {
  top: calc(50% - 1px);
  bottom: auto;
}

.kunity-nav-toggle[aria-expanded="true"] .kunity-nav-toggle__icon span:nth-child(1) {
  transform: rotate(45deg);
}

.kunity-nav-toggle[aria-expanded="true"] .kunity-nav-toggle__icon span:nth-child(2) {
  opacity: 0;
}

.kunity-nav-toggle[aria-expanded="true"] .kunity-nav-toggle__icon span:nth-child(3) {
  transform: rotate(-45deg);
}

.kunity-site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.kunity-site-logo img {
  display: block;
  height: 2rem;
  width: auto;
}

.kunity-site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kunity-site-nav a {
  color: var(--kunity-muted);
  font-size: var(--kunity-ref-text-caption);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.kunity-site-nav a:hover {
  color: var(--kunity-accent-text);
}

.kunity-site-nav a[aria-current="page"] {
  color: var(--kunity-graphite);
}

.kunity-site-header-spacer {
  height: var(--kunity-site-header-h, calc(4.5rem + env(safe-area-inset-top, 0px)));
}

html.kunity-reference-visual-root {
  scroll-padding-top: var(--kunity-site-header-h, 4.5rem);
}

/* Footer */

.kunity-site-footer {
  border-top: 1px solid var(--kunity-line-soft);
  padding-block: var(--kunity-ref-gap-block);
}

.kunity-site-footer .kunity-site-wrap {
  display: grid;
  gap: 0.75rem;
}

.kunity-site-footer ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--kunity-muted);
  font-size: var(--kunity-ref-text-caption);
  line-height: 1.5;
}

.kunity-site-footer p {
  margin: 0;
  font-size: var(--kunity-ref-text-caption);
  color: var(--kunity-muted);
}

.kunity-site-footer__copyright {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--kunity-line-soft);
}

@media (max-width: 800px) {
  .kunity-nav-toggle {
    display: block;
    align-self: center;
  }

  .kunity-site-header__nav {
    display: none;
    width: 100%;
  }

  .kunity-site-header--menu-open .kunity-site-header__nav {
    display: block;
    padding-top: 0.35rem;
  }

  .kunity-site-nav {
    display: grid;
    grid-template-columns: repeat(2, auto);
    gap: 0.45rem 1rem;
    justify-content: end;
    width: 100%;
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kunity-nav-toggle__icon span {
    transition: none;
  }
}