/* ══════════════════════════════════════════════
   SIPJOLT v4 — Navigation Component
   ══════════════════════════════════════════════ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  transition: transform var(--duration-base) var(--ease-out),
              background 0.4s ease,
              backdrop-filter 0.4s ease,
              border-bottom-color 0.4s ease;
}

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

/* Transparent nav for full-bleed hero pages */
.nav--transparent {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
}

.nav--transparent .nav__wordmark {
  color: #fff;
}

.nav--transparent .nav__link {
  color: rgba(255, 255, 255, 0.75);
}

.nav--transparent .nav__link:hover {
  color: #fff;
}

.nav--transparent .nav__cta {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.nav--transparent .nav__cta:hover {
  background-color: #fff;
  color: var(--ink);
}

.nav--transparent .nav__hamburger-line {
  background-color: #fff;
}

/* Solid nav — restores default appearance after transparent hero */
.nav--solid {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

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

.nav--solid .nav__link {
  color: var(--grey-500);
}

.nav--solid .nav__link:hover {
  color: var(--grey-900);
}

.nav--solid .nav__cta {
  color: var(--ink);
  border-color: var(--ink);
}

.nav--solid .nav__cta:hover {
  background-color: var(--ink);
  color: var(--white);
}

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

.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);
  font-style: normal;
  letter-spacing: 0.12em;
  color: var(--ink);
  text-transform: uppercase;
  text-decoration: none;
  flex-shrink: 0;
}

/* ── DESKTOP LINKS ── */
.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--size-sm);
  font-weight: var(--weight-regular);
  color: var(--grey-500);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
  padding-bottom: 4px;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width var(--duration-fast) var(--ease-out);
}

.nav__link:hover {
  color: var(--grey-900);
}

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

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

/* ── DESKTOP CTA ── */
.nav__cta {
  display: none;
  font-family: var(--font-body);
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  padding: 8px 20px;
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-out);
}

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

/* ── HAMBURGER ── */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 32px;
  cursor: pointer;
  z-index: 1001;
  position: relative;
}

.nav__hamburger-line {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: var(--ink);
  transition: all var(--duration-base) var(--ease-out);
}

.nav__hamburger-line:nth-child(1) {
  transform: translateY(-4px);
}

.nav__hamburger-line:nth-child(2) {
  opacity: 1;
}

.nav__hamburger-line:nth-child(3) {
  transform: translateY(4px);
}

/* Hamburger → X */
.nav__hamburger--open .nav__hamburger-line:nth-child(1) {
  transform: translateY(0) rotate(45deg);
}

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

.nav__hamburger--open .nav__hamburger-line:nth-child(3) {
  transform: translateY(0) rotate(-45deg);
}

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

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

.nav__overlay-link {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: var(--weight-regular);
  font-style: italic;
  color: var(--ink);
  text-decoration: none;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

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

.nav__overlay--open .nav__overlay-link:nth-child(1) { transition-delay: 200ms; }
.nav__overlay--open .nav__overlay-link:nth-child(2) { transition-delay: 260ms; }
.nav__overlay--open .nav__overlay-link:nth-child(3) { transition-delay: 320ms; }
.nav__overlay--open .nav__overlay-link:nth-child(4) { transition-delay: 380ms; }
.nav__overlay--open .nav__overlay-link:nth-child(5) { transition-delay: 440ms; }

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

.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--open .nav__overlay-cta {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 500ms;
}

/* ── DESKTOP ── */
@media (min-width: 768px) {
  .nav__inner {
    padding: 0 var(--space-8);
  }

  .nav__links {
    display: flex;
  }

  .nav__cta {
    display: inline-flex;
  }

  .nav__hamburger {
    display: none;
  }

  .nav__overlay {
    display: none;
  }
}

@media (min-width: 1280px) {
  .nav__inner {
    padding: 0 var(--space-12);
  }

  .nav__links {
    gap: var(--space-12);
  }
}