/* ============================================================
   NAVBAR
============================================================ */

#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  overflow: visible;
  background: var(--color-surface-dark);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

#header.scrolled {
  background: var(--color-surface-dark-hover);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

#header .container {
  overflow: visible;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
  overflow: visible;
  position: relative;
}

.nav-logo {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  align-items: flex-start;
  line-height: 1;
  text-decoration: none;
  flex-shrink: 0;
  position: relative;
  z-index: 1010;
}

.nav-logo-img {
  max-height: 44px;
  width: auto;
  display: block;
}

.nav-logo-main {
  font-family: var(--font-heading);
  font-size: clamp(0.9rem, 1.6vw, 1.15rem);
  font-weight: 800;
  color: var(--color-surface);
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.nav-logo-sub {
  font-size: clamp(0.5rem, 0.75vw, 0.62rem);
  font-weight: 400;
  color: var(--color-amber-light);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: var(--font-heading);
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
  background: none;
  border: none;
  flex-shrink: 0;
  z-index: 1010;
  position: relative;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-surface);
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-cta {
  display: none;
}

.nav-links {
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 0;
  right: 0;
  bottom: auto;
  z-index: 1005;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 1rem 1.25rem;
  background: var(--color-surface-dark);
  backdrop-filter: blur(22px) saturate(1.5);
  -webkit-backdrop-filter: blur(22px) saturate(1.5);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px);
  transition: opacity 0.32s ease, transform 0.32s ease;
}

.nav-links.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-links li {
  width: 100%;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.nav-links.open li:nth-child(1) {
  opacity: 1;
  transform: none;
  transition-delay: 0.05s;
}

.nav-links.open li:nth-child(2) {
  opacity: 1;
  transform: none;
  transition-delay: 0.1s;
}

.nav-links.open li:nth-child(3) {
  opacity: 1;
  transform: none;
  transition-delay: 0.15s;
}

.nav-links.open li:nth-child(4) {
  opacity: 1;
  transform: none;
  transition-delay: 0.2s;
}

.nav-links.open li:nth-child(5) {
  opacity: 1;
  transform: none;
  transition-delay: 0.25s;
}

.nav-links a {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1rem, 3.6vw, 1.18rem);
  font-weight: 700;
  color: var(--color-surface);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.72rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-amber-light);
  padding-left: 0.4rem;
}

@media (min-width: 1024px) {
  .nav-inner {
    justify-content: flex-start;
    gap: 0;
  }

  .nav-logo {
    margin-right: auto;
  }

  .nav-links {
    position: static;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    flex-direction: row;
    align-items: center;
    gap: 0;
    width: auto;
    flex-shrink: 0;
    overflow: visible;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-top: none;
    padding: 0;
    margin: 0;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    transition: none;
  }

  .nav-links li {
    opacity: 1;
    transform: none;
    transition: none;
    width: auto;
    overflow: visible;
  }

  .nav-links a {
    font-size: clamp(0.58rem, 0.75vw, 0.74rem);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.82);
    border-bottom: none;
    padding: 0.4rem clamp(0.3rem, 0.5vw, 0.6rem);
    white-space: nowrap;
    overflow: visible;
    transition: color 0.2s ease;
  }

  .nav-links a:hover,
  .nav-links a[aria-current="page"] {
    color: var(--color-amber-light);
    padding-left: clamp(0.3rem, 0.5vw, 0.6rem);
  }

  .nav-cta {
    display: inline-flex;
    flex-shrink: 0;
    margin-left: clamp(0.3rem, 0.5vw, 0.75rem);
    padding: 0.6em clamp(0.8em, 1vw, 1.3em);
    font-size: clamp(0.65rem, 0.75vw, 0.76rem);
    white-space: nowrap;
  }

  .hamburger {
    display: none;
  }
}