/* ═══════════════════════════════════════════════
   JONIEL DA SILVA — SHARED DARK NAV
   Homepage, landing pages, work index
   ═══════════════════════════════════════════════ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  height: var(--nav-h);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--grid-gap);
  height: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--grid-gap);
}

.nav-logo {
  font-family: var(--futura);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.05em;
  color: var(--white);
  display: flex;
  align-items: center;
}

.nav-logo img {
  display: block;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  margin-right: 10px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: calc(var(--unit) * 5);
  justify-content: center;
}

.nav-links a {
  font-family: var(--futura);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-light);
  transition: color 0.2s;
}

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

.nav-cta {
  font-family: var(--futura);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--black);
  background: var(--white);
  padding: calc(var(--unit) * 2) calc(var(--unit) * 4);
  transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
  background: var(--accent);
  color: var(--white);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: calc(var(--unit) * 2);
  cursor: pointer;
}

.burger-icon {
  display: block;
  width: 28px;
  height: 20px;
  position: relative;
}

.burger-icon span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--white);
  position: absolute;
  left: 0;
  top: 50%;
  transition: transform 0.35s cubic-bezier(0.2, 0.6, 0.3, 1), background 0.2s ease;
}

.burger-icon span:nth-child(1) { transform: translateY(-5px); }
.burger-icon span:nth-child(2) { transform: translateY(5px); }
.burger-icon.is-active span:nth-child(1) { transform: rotate(45deg); }
.burger-icon.is-active span:nth-child(2) { transform: rotate(-45deg); }

.nav-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100vh;
  background: var(--dark-bg);
  z-index: 2000;
  transform: none;
  visibility: hidden;
  opacity: 0;
  transition: visibility 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.nav-overlay.active {
  visibility: visible;
  opacity: 1;
}

.nav-overlay-backdrop {
  display: none;
}

.nav-overlay-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--nav-h);
  padding: 0 var(--grid-gap);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.nav-overlay-close {
  background: none;
  border: none;
  padding: calc(var(--unit) * 2);
  cursor: pointer;
}

.nav-overlay-links {
  list-style: none;
  padding: calc(var(--unit) * 6) var(--grid-gap);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.nav-overlay-links li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-overlay.active .nav-overlay-links li {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay.active .nav-overlay-links li:nth-child(1) { transition-delay: 0.1s; }
.nav-overlay.active .nav-overlay-links li:nth-child(2) { transition-delay: 0.2s; }
.nav-overlay.active .nav-overlay-links li:nth-child(3) { transition-delay: 0.3s; }
.nav-overlay.active .nav-overlay-links li:nth-child(4) { transition-delay: 0.4s; }
.nav-overlay.active .nav-overlay-links li:nth-child(5) { transition-delay: 0.5s; }
.nav-overlay.active .nav-overlay-links li:nth-child(6) { transition-delay: 0.6s; }
.nav-overlay.active .nav-overlay-links li:nth-child(7) { transition-delay: 0.7s; }
.nav-overlay.active .nav-overlay-links li:nth-child(8) { transition-delay: 0.8s; }
.nav-overlay.active .nav-overlay-links li:nth-child(9) { transition-delay: 0.9s; }
.nav-overlay.active .nav-overlay-links li:nth-child(10) { transition-delay: 1s; }

.nav-overlay-links a {
  display: block;
  font-family: var(--futura);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
  padding: calc(var(--unit) * 3) 0;
  transition: color 0.2s, padding-left 0.2s;
}

.nav-overlay-links a:hover {
  color: var(--accent);
  padding-left: calc(var(--unit) * 2);
}

.nav-overlay-cta {
  margin: 0 var(--grid-gap) calc(var(--unit) * 4);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-overlay.active .nav-overlay-cta {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.4s;
}

.nav-overlay-cta a {
  display: block;
  text-align: center;
  font-family: var(--futura);
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  background: var(--white);
  padding: calc(var(--unit) * 3) calc(var(--unit) * 4);
  transition: background 0.2s, color 0.2s;
}

.nav-overlay-cta a:hover {
  background: var(--accent);
  color: var(--white);
}

@media (max-width: 768px) {
  .nav-inner {
    grid-template-columns: 1fr auto;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}