/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 1.35rem 0;
  transition: padding var(--dur) var(--ease-out), background var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  padding: 0.85rem 0;
  background: rgba(10, 9, 8, 0.78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--surface-border);
  box-shadow: 0 10px 40px -20px rgba(0, 0, 0, 0.6);
}

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

.nav-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  z-index: 2;
}

.nav-logo-img {
  height: 46px;
  width: auto;
  display: block;
  transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-power3),
    height var(--dur) var(--ease-out);
}

.nav-logo:hover .nav-logo-img {
  opacity: 0.88;
  transform: scale(1.03);
}

.nav.is-scrolled .nav-logo-img {
  height: 38px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 2vw, 2.4rem);
}

.nav-links a {
  position: relative;
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding-block: 0.4rem;
  transition: color var(--dur-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-power3);
}

.nav-links a:hover {
  color: var(--text);
}
.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-links a.is-active {
  color: var(--accent);
}
.nav-links a.is-active::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-cta {
  position: relative;
}

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  z-index: 2;
}

.nav-burger span {
  display: block;
  height: 1.5px;
  width: 22px;
  background: var(--text);
  margin-inline: auto;
  transition: transform var(--dur) var(--ease-power3), opacity var(--dur-fast);
}

body.menu-open .nav-burger span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
body.menu-open .nav-burger span:nth-child(2) {
  opacity: 0;
}
body.menu-open .nav-burger span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ---- Mobile full-screen menu ---- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 499;
  background: #0a0908;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 6.5rem clamp(1.5rem, 6vw, 3rem) 2.5rem;
  clip-path: circle(2% at calc(100% - 38px) 38px);
  transition: clip-path 0.7s var(--ease-power3);
  pointer-events: none;
}

body.menu-open .mobile-menu {
  clip-path: circle(150% at calc(100% - 38px) 38px);
  pointer-events: auto;
}

.mobile-menu::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 10%, rgba(232, 184, 75, 0.1), transparent 55%);
  pointer-events: none;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.mobile-menu-links li {
  overflow: hidden;
}

.mobile-menu-links a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 11vw, 4.2rem);
  text-transform: uppercase;
  line-height: 1.12;
  color: var(--text);
  transform: translateY(110%);
  transition: transform 0.6s var(--ease-power3), color var(--dur-fast);
  opacity: 0.9;
}

body.menu-open .mobile-menu-links a {
  transform: translateY(0);
}

.mobile-menu-links .num {
  font-family: var(--font-head);
  font-size: 0.9rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.mobile-menu-links a:hover,
.mobile-menu-links a.is-active {
  color: var(--accent);
}

.mobile-menu-foot {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-menu-foot .btn {
  width: 100%;
}

.mobile-social {
  display: flex;
  gap: 1.1rem;
}

.mobile-social a {
  width: 38px;
  height: 38px;
  border: 1px solid var(--surface-border-strong);
  border-radius: 50%;
  display: grid;
  place-items: center;
  transition: border-color var(--dur-fast), color var(--dur-fast), transform var(--dur-fast);
}

.mobile-social a:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.mobile-contact {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.8;
}

.mobile-contact a {
  color: var(--text-dim);
}

@media (max-width: 920px) {
  .nav-links {
    display: none;
  }
  .nav-actions .btn {
    display: none;
  }
  .nav-burger {
    display: flex;
  }
}