/* ═══════════════════════════════════════════════════════════
   ELVN:11 Landing — Navigation
   Floating glass pill navbar with scroll state + mobile drawer
   Ported from ELVN11-WEBSITE nav-v2.css
═══════════════════════════════════════════════════════════ */

/* ── Wrapper ─────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: var(--sp-16);
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - var(--sp-16));
  max-width: 1280px;
  z-index: var(--z-nav);
  display: flex;
  align-items: stretch;

  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.06) 0%,
      rgba(255, 255, 255, 0.00) 60%
    ),
    var(--clr-bg-nav);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-bottom-color: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-pill);
  box-shadow:
    0 1px 0 0 rgba(255, 255, 255, 0.12) inset,
    0 8px 32px rgba(0, 0, 0, 0.28),
    0 0 0 1px rgba(0, 0, 0, 0.12);

  padding: 4px 4px 4px clamp(20px, 3vw, 32px);
  min-height: 76px;
  transition:
    background var(--ease-base),
    border-color var(--ease-base),
    box-shadow var(--ease-base),
    width var(--ease-base),
    max-width var(--ease-base);
}

/* Scrolled state — glass brightens + shrinks */
.site-nav.scrolled {
  width: calc(80% - var(--sp-16));
  max-width: 1024px;
  background:
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.40) 0%,
      rgba(255, 255, 255, 0.05) 60%
    ),
    rgba(255, 255, 255, 0.20);
  border-color: rgba(255, 255, 255, 0.40);
  box-shadow:
    0 1px 0 0 rgba(255, 255, 255, 0.35) inset,
    0 12px 48px rgba(0, 0, 0, 0.15),
    0 0 0 1px rgba(255, 255, 255, 0.25);
}

/* Scrolled text colors — turn dark */
.site-nav.scrolled .nav-logo { color: var(--clr-bg) !important; }
.site-nav.scrolled .nav-link { color: rgba(4, 13, 24, 0.7) !important; }
.site-nav.scrolled .nav-link:hover { color: rgba(4, 13, 24, 1) !important; }
.site-nav.scrolled .nav-hamburger span { background: var(--clr-bg); }

/* ── Inner layout ────────────────────────────────────────── */
.nav-inner {
  flex: 1;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: var(--sp-24);
}

/* ── Logo ────────────────────────────────────────────────── */
.nav-logo {
  font-size: 1.69rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--clr-white) !important;
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  transition: opacity var(--ease-fast);
}

.nav-logo:hover { opacity: 0.8; }

/* ── Desktop links ───────────────────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-32);
  flex: 1;
  justify-content: center;
  align-self: center;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-white-70) !important;
  letter-spacing: 0.02em;
  position: relative;
  transition: color var(--ease-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--clr-accent);
  border-radius: 2px;
  transition: width var(--ease-base);
}

.nav-link:hover { color: var(--clr-white) !important; }
.nav-link:hover::after { width: 100%; }

/* ── Actions (CTA + hamburger) ───────────────────────────── */
.nav-actions {
  display: flex;
  align-items: stretch;
  align-self: stretch;
  gap: var(--sp-12);
  flex-shrink: 0;
}

/* ── CTA Button — solid turquoise ───────────────────────── */
.nav-cta {
  display: flex;
  align-items: center;
  align-self: stretch;
  gap: var(--sp-8);
  background: var(--clr-accent);
  border: none;
  color: #040d18 !important;
  font-size: 1rem;
  font-weight: 700;
  padding: 0 clamp(20px, 2.5vw, 32px);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  box-shadow: 0 0 24px rgba(78, 205, 196, 0.30);
  transition:
    background var(--ease-fast),
    box-shadow var(--ease-fast),
    transform var(--ease-fast);
}

.nav-cta svg { flex-shrink: 0; stroke: #040d18; transition: transform var(--ease-fast); }
.nav-cta:hover { background: #3bb8af; box-shadow: 0 0 44px rgba(78, 205, 196, 0.50); transform: translateY(-1px); }
.nav-cta:hover svg { transform: translate(2px, -2px); }

/* ── Hamburger (mobile only) ─────────────────────────────── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  align-self: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--sp-4);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--clr-white);
  border-radius: 2px;
  transform-origin: center;
  transition: transform var(--ease-base), opacity var(--ease-base), width var(--ease-base);
}

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

/* ══ MOBILE DRAWER ════════════════════════════════════════ */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile);
  background: rgba(4, 13, 24, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
  pointer-events: none;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu.is-open { transform: translateX(0); pointer-events: auto; }

.mobile-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-mobile) - 1);
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.mobile-backdrop.is-open { opacity: 1; pointer-events: auto; }

.mobile-inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: var(--sp-24);
}

.mobile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--sp-24);
  border-bottom: 1px solid var(--clr-white-08);
  margin-bottom: var(--sp-32);
}

.mobile-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--clr-white-05);
  border: 1px solid var(--clr-white-10);
  color: var(--clr-white-70);
  transition: background var(--ease-fast), color var(--ease-fast);
}

.mobile-close:hover { background: var(--clr-white-10); color: var(--clr-white); }

.mobile-nav-links { display: flex; flex-direction: column; flex: 1; }

.mobile-nav-link {
  font-size: clamp(2rem, 8vw, 2.8rem);
  font-weight: 800;
  color: var(--clr-white-70) !important;
  padding: var(--sp-16) 0;
  border-bottom: 1px solid var(--clr-white-08);
  letter-spacing: -0.03em;
  line-height: 1.1;
  transition: color var(--ease-fast), padding-left var(--ease-fast);
  display: block;
}

.mobile-nav-link:hover,
.mobile-nav-link:active { color: var(--clr-accent) !important; padding-left: var(--sp-12); }

.mobile-cta-block {
  margin-top: var(--sp-40);
  padding-top: var(--sp-32);
  border-top: 1px solid var(--clr-white-08);
}

.mobile-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-12);
  width: 100%;
  background: var(--clr-accent);
  color: #040d18 !important;
  font-size: 1.1rem;
  font-weight: 700;
  padding: var(--sp-16) var(--sp-32);
  border-radius: var(--radius-pill);
  box-shadow: 0 0 32px rgba(78, 205, 196, 0.35);
  transition: background var(--ease-fast), box-shadow var(--ease-fast), transform var(--ease-fast);
}

.mobile-cta:hover { background: #3bb8af; box-shadow: 0 0 48px rgba(78, 205, 196, 0.50); transform: translateY(-1px); }

.mobile-cta-disclaimer {
  text-align: center;
  color: var(--clr-white-55);
  font-size: 0.8rem;
  margin-top: var(--sp-12);
  letter-spacing: 0.02em;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
}

@media (max-width: 640px) {
  .site-nav { padding: 4px 4px 4px var(--sp-16); min-height: 60px; }
  .site-nav.scrolled { width: calc(95% - var(--sp-16)); }
}