/* ══════════════════════════════════════════════════════════
   NAV.CSS — Fixed Navigation, Hamburger, Overlay
   Dark-dominant PlugJolt theme
   ══════════════════════════════════════════════════════════ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 1000;
  transition: transform var(--duration-base) var(--ease-out),
              background-color var(--duration-base) var(--ease-out),
              backdrop-filter var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}

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

/* ── SOLID STATE — dark glass blur ── */
.nav--solid {
  background-color: rgba(13, 31, 34, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav--solid .nav__wordmark-plug {
  color: var(--white);
}

.nav--solid .nav__link {
  color: var(--text-secondary);
}

.nav--solid .nav__link:hover {
  color: var(--volt-green);
}

.nav--solid .nav__cta {
  background-color: var(--volt-green);
  color: var(--deep-teal);
  border: none;
}

.nav--solid .nav__cta:hover {
  background-color: var(--volt-green-hover);
}

.nav--solid .nav__hamburger-line {
  background-color: var(--white);
}

/* ── TRANSPARENT STATE ── */
.nav--transparent {
  background-color: transparent;
  border-bottom: 1px solid transparent;
}

.nav--transparent .nav__wordmark-plug {
  color: var(--white);
}

.nav--transparent .nav__link {
  color: rgba(255, 255, 255, 0.7);
}

.nav--transparent .nav__link:hover {
  color: var(--volt-green);
}

.nav--transparent .nav__cta {
  background-color: var(--volt-green);
  color: var(--deep-teal);
  border: none;
}

.nav--transparent .nav__cta:hover {
  background-color: var(--volt-green-hover);
}

.nav--transparent .nav__hamburger-line {
  background-color: var(--white);
}

/* ── NAV INNER ── */
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ── WORDMARK ── */
.nav__wordmark {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: var(--weight-regular);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  display: flex;
  align-items: center;
  z-index: 1001;
}

.nav__wordmark-plug {
  transition: color var(--duration-base) var(--ease-out);
}

.nav__wordmark-jolt {
  color: var(--volt-green);
}

.nav__logo {
  height: 48px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
}

/* ── NAV LINKS ── */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--size-sm);
  font-weight: var(--weight-regular);
  transition: color 0.2s ease;
  position: relative;
  text-decoration: none;
  padding-bottom: 4px;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--volt-green);
  transition: width 0.2s ease;
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link--active {
  color: var(--volt-green);
}

.nav__link--active::after {
  width: 100%;
}

/* ── NAV CTA — pill button, volt green ── */
.nav__cta {
  display: none;
  padding: 8px 20px;
  font-family: var(--font-body);
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  background-color: var(--volt-green);
  color: var(--deep-teal);
  border: none;
  border-radius: 9999px;
  transition: all 0.2s ease;
  text-decoration: none;
}

.nav__cta:hover {
  background-color: var(--volt-green-hover);
}

/* ── HAMBURGER ── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 6px;
  z-index: 1001;
  cursor: pointer;
  background: none;
  border: none;
}

.nav__hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--white);
  border-radius: 2px;
  transition: all var(--duration-base) var(--ease-out);
}

.nav__hamburger--active .nav__hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav__hamburger--active .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav__hamburger--active .nav__hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ── MOBILE OVERLAY ── */
.nav__overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--deep-teal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  z-index: 999;
  clip-path: circle(0% at calc(100% - 40px) 36px);
  transition: clip-path var(--duration-slow) var(--ease-out);
  pointer-events: none;
}

.nav__overlay--active {
  clip-path: circle(150% at calc(100% - 40px) 36px);
  pointer-events: all;
}

.nav__overlay-link {
  font-family: var(--font-display);
  font-size: var(--size-2xl);
  font-weight: var(--weight-bold);
  color: var(--white);
  text-decoration: none;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out),
              color 0.2s ease;
}

.nav__overlay--active .nav__overlay-link {
  opacity: 1;
  transform: translateY(0);
}

.nav__overlay-link:hover {
  color: var(--volt-green);
}

.nav__overlay-cta {
  margin-top: var(--space-8);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}

.nav__overlay--active .nav__overlay-cta {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger overlay links */
.nav__overlay--active .nav__overlay-link:nth-child(1) { transition-delay: 0.1s; }
.nav__overlay--active .nav__overlay-link:nth-child(2) { transition-delay: 0.15s; }
.nav__overlay--active .nav__overlay-link:nth-child(3) { transition-delay: 0.2s; }
.nav__overlay--active .nav__overlay-link:nth-child(4) { transition-delay: 0.25s; }
.nav__overlay--active .nav__overlay-link:nth-child(5) { transition-delay: 0.3s; }
.nav__overlay--active .nav__overlay-cta { transition-delay: 0.35s; }

/* ── RESPONSIVE ── */
@media (min-width: 769px) {
  .nav__cta {
    display: inline-flex;
  }

  .nav__inner {
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1280px) {
  .nav__links {
    gap: var(--space-12);
  }

  .nav__inner {
    padding: 0 var(--space-12);
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__inner {
    padding: 0 var(--space-4);
  }

  .nav__overlay-link {
    min-height: 44px;
    padding: 8px 0;
  }
}

@media (min-width: 769px) {
  .nav__overlay {
    display: none;
  }
}