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

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  background: rgba(9, 12, 15, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: border-color var(--t-mid);
}

/* Logo */
.nav__logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-bright);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0;
  cursor: pointer;
  user-select: none;
}
.nav__logo .logo-name  { color: var(--text-bright); }
.nav__logo .logo-sep   { color: var(--text-dim); margin: 0 2px; }
.nav__logo .logo-dir   { color: var(--text-dim); }
.nav__logo .logo-caret { color: var(--green); margin-left: 2px; }

/* Center links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.9rem;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid transparent;
  border-radius: 3px;
  transition: all var(--t-fast);
  position: relative;
}
.nav__link .link-num {
  color: var(--green-dim);
  font-size: 0.65rem;
}
.nav__link:hover {
  color: var(--text);
  border-color: var(--border2);
  background: var(--green-glow3);
}
.nav__link.active {
  color: var(--green);
  border-color: var(--border2);
  background: var(--green-glow2);
}

/* Right side: social + hamburger */
.nav__right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav__social {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nav__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  color: var(--text-dim);
  border: 1px solid transparent;
  border-radius: 3px;
  transition: all var(--t-fast);
}
.nav__social-link:hover {
  color: var(--green);
  border-color: var(--border2);
  background: var(--green-glow2);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: 1px solid var(--border2);
  border-radius: 3px;
  padding: 6px 7px;
  cursor: pointer;
  transition: border-color var(--t-fast);
}
.nav__hamburger:hover { border-color: var(--green); }

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text-dim);
  transition: all 0.3s ease;
  transform-origin: center;
}

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

/* Mobile drawer */
.nav__drawer {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: rgba(9, 12, 15, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem 1.5rem;
  z-index: 999;
  flex-direction: column;
  gap: 0.25rem;
  animation: fadeIn 0.2s ease;
}
.nav__drawer.open { display: flex; }

.nav__drawer .nav__link {
  width: 100%;
  padding: 0.7rem 1rem;
  font-size: 0.82rem;
}

.nav__drawer .drawer-social {
  display: flex;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav {
    padding: 0 1.25rem;
  }
  .nav__links {
    display: none;
  }
  .nav__social {
    display: none;
  }
  .nav__hamburger {
    display: flex;
  }
}