/* === NAV — floating shrink-on-scroll === */
.nav {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: calc(100% - 0px);
  max-width: 100%;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border: 1px solid transparent;
  border-radius: 0;
  box-shadow: 0 0 0 0 transparent;
  transition:
    top 420ms cubic-bezier(0.16, 1, 0.3, 1),
    max-width 420ms cubic-bezier(0.16, 1, 0.3, 1),
    padding 420ms cubic-bezier(0.16, 1, 0.3, 1),
    border-radius 420ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 280ms ease,
    background 280ms ease,
    box-shadow 320ms ease;
}
.nav.scrolled {
  top: 14px;
  max-width: min(1100px, calc(100% - 32px));
  padding: 10px 18px;
  background: color-mix(in srgb, var(--bg) 65%, transparent);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border-color: color-mix(in srgb, var(--rule) 80%, transparent);
  border-radius: 14px;
  box-shadow:
    0 12px 32px -16px color-mix(in srgb, var(--fg) 24%, transparent),
    0 2px 6px -2px color-mix(in srgb, var(--fg) 10%, transparent);
}
@media (max-width: 900px) {
  .nav.scrolled {
    top: 8px;
    max-width: calc(100% - 16px);
    padding: 10px 14px;
    border-radius: 12px;
  }
}
.nav-logo {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--fg);
  display: inline-flex;
  align-items: baseline;
}
.nav-logo .dot { width: 8px; height: 8px; align-self: flex-end; margin-bottom: 6px; margin-left: 2px; }
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--fg-muted);
  position: relative;
  padding: 6px 2px;
  transition: color var(--t-fast);
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.lang-switch {
  display: flex;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-pill);
  overflow: hidden;
}
.lang-switch button {
  padding: 6px 12px;
  color: var(--fg-faint);
  transition: background var(--t-fast), color var(--t-fast);
}
.lang-switch button.active {
  background: var(--fg);
  color: var(--bg);
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta-desktop { display: none !important; }
}

/* === HAMBURGER BUTTON (mobile only) === */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 201;
}
.nav-hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.2s ease;
  transform-origin: center;
}
.nav-hamburger.is-open .nav-hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-hamburger.is-open .nav-hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.is-open .nav-hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
@media (max-width: 900px) {
  .nav-hamburger { display: flex; }
}

/* === MOBILE OVERLAY MENU === */
.nav-mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(32px) saturate(160%);
  -webkit-backdrop-filter: blur(32px) saturate(160%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-mobile-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}
.nav-mobile-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  width: 100%;
  max-width: 400px;
  padding: 0 var(--gutter);
}
.nav-mobile-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  text-align: center;
}
.nav-mobile-links li {
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.4s ease;
}
.nav-mobile-overlay.is-open .nav-mobile-links li {
  transform: none;
  opacity: 1;
}
.nav-mobile-overlay.is-open .nav-mobile-links li:nth-child(1) { transition-delay: 0.05s; }
.nav-mobile-overlay.is-open .nav-mobile-links li:nth-child(2) { transition-delay: 0.10s; }
.nav-mobile-overlay.is-open .nav-mobile-links li:nth-child(3) { transition-delay: 0.15s; }
.nav-mobile-overlay.is-open .nav-mobile-links li:nth-child(4) { transition-delay: 0.20s; }
.nav-mobile-overlay.is-open .nav-mobile-links li:nth-child(5) { transition-delay: 0.25s; }
.nav-mobile-overlay.is-open .nav-mobile-links li:nth-child(6) { transition-delay: 0.30s; }
.nav-mobile-links a {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--fg-muted);
  padding: 12px 0;
  transition: color 0.2s ease;
}
.nav-mobile-links a:hover,
.nav-mobile-links a.active {
  color: var(--fg);
}
.nav-mobile-links a.active::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 8px;
  vertical-align: middle;
}
.nav-mobile-bottom {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  align-items: center;
}

/* === FOOTER === */
.footer {
  background: var(--black-rock);
  color: var(--white);
  padding: var(--s-10) var(--gutter) var(--s-7);
  position: relative;
  overflow: hidden;
}
.footer-mega {
  font-size: clamp(80px, 16vw, 240px);
  font-weight: 500;
  line-height: 0.85;
  letter-spacing: -0.04em;
  margin: 0;
  padding-block: var(--s-7) var(--s-8);
  position: relative;
}
.footer-mega .dot {
  width: 0.18em;
  height: 0.18em;
  background: var(--energizing);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--s-7);
  border-top: 1px solid color-mix(in srgb, var(--white) 14%, transparent);
  padding-top: var(--s-7);
}
.footer h5 {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin: 0 0 18px;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer ul a {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  font-weight: 300;
  transition: color var(--t-fast);
}
.footer ul a:hover { color: var(--energizing); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: var(--s-8);
  padding-top: var(--s-5);
  border-top: 1px solid color-mix(in srgb, var(--white) 10%, transparent);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  flex-wrap: wrap;
  gap: 16px;
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}