/* ═════════════════════════════════════════
   LAYOUT: header, menu ya full-screen, footer
   ═════════════════════════════════════════ */

/* ───── HEADER ───── */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  view-transition-name: site-header;
  border-bottom: 1px solid transparent;
  transition:
    background-color 0.5s var(--ease),
    border-color 0.5s var(--ease),
    backdrop-filter 0.5s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(11, 11, 12, 0.8);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line);
}
html.menu-open .site-header {
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-bottom-color: transparent;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px var(--pad);
  transition: padding 0.5s var(--ease);
}
.site-header.is-scrolled .site-header__inner {
  padding-block: 12px;
}
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* logo + mistari miwili */
.brand {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.brand__mark {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
}
.brand__dot {
  color: var(--accent);
}
.brand__meta {
  display: none;
}
.brand__tagline {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  opacity: 0.85;
  white-space: nowrap;
}
.brand__role {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

/* desktop: mistari miwili inaonekana juu, inajikunja ukiscroll au menu ikifunguka */
@media (min-width: 1024px) {
  .brand__meta {
    display: grid;
    grid-template-rows: 1fr;
    transition:
      grid-template-rows 0.5s var(--ease),
      opacity 0.4s var(--ease);
  }
  .brand__meta-inner {
    min-height: 0;
    overflow: hidden;
  }
  .site-header.is-scrolled .brand__meta,
  html.menu-open .brand__meta {
    grid-template-rows: 0fr;
    opacity: 0;
  }
}

@media (max-width: 380px) {
  .header-cta {
    padding: 9px 12px;
    font-size: 13px;
  }
}

/* ───── KITUFE CHA MENU ───── */
.menu-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.3s;
}
.menu-btn:hover {
  border-color: var(--fg);
}
.menu-btn__icon {
  position: relative;
  width: 18px;
  height: 10px;
}
.menu-btn__icon i {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition:
    top 0.5s var(--ease),
    transform 0.5s var(--ease);
}
.menu-btn__icon i:nth-child(1) {
  top: 0;
}
.menu-btn__icon i:nth-child(2) {
  top: 8px;
}
html.menu-open .menu-btn__icon i:nth-child(1) {
  top: 4px;
  transform: rotate(45deg);
}
html.menu-open .menu-btn__icon i:nth-child(2) {
  top: 4px;
  transform: rotate(-45deg);
}

@media (max-width: 519px) {
  .menu-btn {
    padding: 12px 14px;
  }
  .menu-btn__label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }
}

/* ───── MENU YA FULL-SCREEN ───── */
.menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  padding: clamp(110px, 16vh, 150px) var(--pad) clamp(24px, 5vh, 48px);
  background: var(--bg);
  overflow-y: auto;
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
  transition:
    clip-path 0.8s var(--ease),
    visibility 0s linear 0.8s;
}
html.menu-open .menu {
  clip-path: inset(0);
  visibility: visible;
  transition:
    clip-path 0.8s var(--ease),
    visibility 0s;
}

.menu__nav a {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 4px 0;
  font-size: clamp(40px, 9vw, 104px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.05;
  transition: color 0.3s;
}
.menu__num {
  margin-top: clamp(10px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.menu__text {
  display: inline-block;
  transition: transform 0.5s var(--ease);
}
.menu__nav a:hover,
.menu__nav a:focus-visible,
.menu__nav a[aria-current="page"] {
  color: var(--accent);
}
.menu__nav a:hover .menu__text,
.menu__nav a:focus-visible .menu__text {
  transform: translateX(14px);
}

.menu__foot {
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.menu__tag {
  font-size: 15px;
}
.menu__role {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* links zinaingia moja moja menu ikifunguka */
html.menu-open .menu__nav a {
  animation: menu-in 0.8s var(--ease) both;
  animation-delay: calc(0.25s + var(--i, 0) * 0.07s);
}
html.menu-open .menu__foot {
  animation: menu-in 0.8s var(--ease) 0.65s both;
}
@keyframes menu-in {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ───── FOOTER (ndogo) ───── */
.site-footer {
  padding: 56px var(--pad) 40px;
  border-top: 1px solid var(--line);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.footer-brand {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.footer-brand span {
  color: var(--accent);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  font-size: 14px;
  color: var(--muted);
}
.footer-links a {
  transition: color 0.3s;
}
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--fg);
}
.footer-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}