.vp-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(248, 250, 252, 0.92), rgba(248, 250, 252, 0.86));
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
}

.vp-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.vp-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
}

.vp-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  background: radial-gradient(circle at 20% 0, #fde68a, transparent 55%), linear-gradient(135deg, #2563eb, #0ea5e9);
  color: #0b1120;
  font-weight: 700;
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.95rem;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.4);
}

.vp-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.vp-logo-title {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}

.vp-logo-subtitle {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.vp-nav-wrapper {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.vp-nav {
  flex: 1 1 auto;
}

.vp-nav-list {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.vp-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.vp-nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 0.6rem;
  bottom: 0.2rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  opacity: 0;
  transform: scaleX(0.4);
  transform-origin: center;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.vp-nav-link:focus-visible,
.vp-nav-link:hover {
  color: var(--color-text);
  background-color: rgba(37, 99, 235, 0.05);
}

.vp-nav-link:hover::after,
.vp-nav-link:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.vp-header-cta {
  display: none;
}

.vp-header-download {
  font-size: 0.8rem;
  padding-inline: 1.1rem;
}

.vp-header-download-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.vp-header-download-icon i {
  font-size: 0.95rem;
}

.vp-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background-color: rgba(248, 250, 252, 0.85);
  color: var(--color-text);
  font-size: 0.8rem;
  font-weight: 500;
}

.vp-nav-toggle-box {
  position: relative;
  width: 1.1rem;
  height: 1.1rem;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.2rem;
}

.vp-nav-toggle-line {
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #2563eb, #fbbf24);
  transition: transform var(--transition-base), opacity var(--transition-base), translate var(--transition-base);
}

.vp-nav-toggle-text {
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.vp-nav-toggle:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: 3px;
}

@media (max-width: 767.98px) {
  .vp-nav-wrapper {
    position: fixed;
    inset-inline: 0;
    top: 3.25rem;
    background: radial-gradient(circle at top, rgba(37, 99, 235, 0.18), transparent 60%), #0f172a;
    padding: 0.75rem var(--container-padding-x) 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.9rem;
    box-shadow: 0 20px 55px rgba(15, 23, 42, 0.7);
  }

  .vp-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .vp-nav-link {
    width: 100%;
    padding: 0.55rem 0.85rem;
    border-radius: 0.9rem;
    color: #e5e7eb;
  }

  .vp-nav-link::after {
    display: none;
  }

  .vp-nav-link:hover,
  .vp-nav-link:focus-visible {
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.5), rgba(59, 130, 246, 0.4));
    color: #f9fafb;
  }

  .vp-header-cta {
    display: flex;
    justify-content: flex-start;
  }

  .vp-header-download {
    width: 100%;
    justify-content: center;
  }

  .vp-header-inner {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .vp-header-open .vp-nav-wrapper {
    display: flex;
  }

  .vp-header-open .vp-nav-toggle-line:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .vp-header-open .vp-nav-toggle-line:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }
}

@media (min-width: 768px) {
  .vp-header-inner {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .vp-nav-toggle {
    display: none;
  }

  .vp-nav-wrapper {
    position: static;
    display: flex !important;
    padding: 0;
    background: transparent;
    box-shadow: none;
  }

  .vp-nav-list {
    gap: 0.5rem;
  }

  .vp-header-cta {
    display: flex;
  }
}

@media (min-width: 1024px) {
  .vp-logo-title {
    font-size: 1.1rem;
  }

  .vp-nav-link {
    font-size: 0.92rem;
  }

  .vp-header-download {
    font-size: 0.82rem;
  }
}

.vp-header-skip-link {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -150%);
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  background-color: #0f172a;
  color: #f9fafb;
  font-size: 0.85rem;
  z-index: 60;
  transition: transform var(--transition-base), opacity var(--transition-base);
  opacity: 0;
}

.vp-header-skip-link:focus {
  transform: translate(-50%, 0.6rem);
  opacity: 1;
}