/* ── nav.css — Fixed navigation bar styles ── */

nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: var(--black);
  display: grid;
  grid-template-columns: auto 1fr auto;
  border-bottom: var(--border-thin);
  height: 60px;
}

.nav__brand {
  display: flex;
  align-items: center;
  padding: 0 var(--space-md);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--neon);
  border-right: var(--border-thin);
  letter-spacing: -0.05em;
}

.nav__brand img {
  height: 36px;
  width: auto;
  display: block;
}

.nav__brand a img {
  display: block;
}

.nav__links {
  display: flex;
}

.nav__link {
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  color: var(--white);
  text-decoration: none;
  border-right: var(--border-thin);
  background: linear-gradient(to top, var(--neon) 50%, transparent 50%);
  background-size: 100% 200%;
  background-position: 0% 0%;
  transition:
    background-position 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav__link:hover {
  background-position: 0% 100%;
  color: var(--black);
}

.nav__link--active {
  background: var(--neon);
  color: var(--black);
}

.nav__cta {
  background: var(--neon);
  color: var(--black);
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 var(--space-md);
  text-decoration: none;
  font-weight: 700;
  will-change: transform;
  transition: background-color 0s;
}

.nav__cta:hover {
  background: var(--white);
}

.nav__cta-wrap {
  display: flex;
  align-items: center;
}

.nav__drawer-cta {
  display: none;
}

/* ── HAMBURGER (Option B — Side Drawer) ── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 0 var(--space-md);
  height: 100%;
  background: none;
  border: none;
  border-left: var(--border-thin);
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--white);
  transition:
    width 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
    opacity 0.2s;
}

.nav__hamburger span:nth-child(1) { width: 20px; }
.nav__hamburger span:nth-child(2) { width: 13px; }
.nav__hamburger span:nth-child(3) { width: 20px; }

.nav__hamburger:hover span:nth-child(2) { width: 20px; }

.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── DRAWER BACKDROP ── */
.nav__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 98;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}

.nav__backdrop.open {
  opacity: 1;
  pointer-events: all;
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  nav {
    grid-template-columns: 1fr auto;
  }

  /* Drawer panel */
  .nav__links {
    position: fixed;
    top: 0;
    right: 0;
    width: min(280px, 90vw);
    height: 100%;
    background: var(--black);
    border-left: var(--border-thin);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem clamp(1.25rem, 6vw, 2.5rem) 2.5rem;
    z-index: 99;
    transform: translateX(100%);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  }

  /* Eyebrow label */
  .nav__links::before {
    content: '// ZONA X CROSS TRAINING';
    display: block;
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    color: var(--neon);
    text-transform: uppercase;
    margin-bottom: 2rem;
  }

  .nav__links.open {
    transform: translateX(0);
  }

  /* Links inside drawer */
  .nav__link {
    width: 100%;
    border-right: none;
    border-bottom: var(--border-thin);
    padding: 1.1rem 0;
    background: none;
    color: #666;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0;
    transform: translateX(16px);
    transition:
      color 0.2s,
      opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1),
      transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  }

  /* Staggered entrance animation */
  .nav__links.open .nav__link:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.08s; }
  .nav__links.open .nav__link:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.13s; }
  .nav__links.open .nav__link:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.18s; }
  .nav__links.open .nav__link:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.23s; }

  .nav__link::after {
    content: '→';
    color: transparent;
    transition: color 0.2s;
  }

  .nav__link:hover {
    color: var(--white);
    background: none;
    background-position: unset;
  }

  .nav__link:hover::after {
    color: var(--neon);
  }

  .nav__link--active {
    color: var(--neon);
    background: none;
  }

  .nav__link--active::after {
    color: var(--neon);
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__drawer-cta {
    display: block;
    margin-top: auto;
    background: var(--neon);
    color: var(--black);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-decoration: none;
    text-align: center;
    padding: 1rem 1.5rem;
    opacity: 0;
    transform: translateY(10px);
    will-change: transform, opacity;
    transition:
      opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1),
      transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
      background-color 0s;
  }

  .nav__drawer-cta:hover {
    background: var(--white);
  }

  .nav__links.open .nav__drawer-cta {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.28s;
  }
}

@media (max-width: 600px) {
  .nav__brand {
    padding: 0 var(--space-sm);
  }
}