.msp-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: #ffffff;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(10px);
}

.msp-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.msp-header__brand {
  display: flex;
  align-items: center;
}

.msp-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.msp-header__logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 20%, #ffe7b8 0, #f97316 40%, #1d4ed8 100%);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.25);
  font-size: 1.1rem;
}

.msp-header__logo-text {
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: #0f172a;
}

.msp-header__nav {
  display: flex;
}

.msp-header__nav-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.msp-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font-family: "Nunito", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  color: #0f172a;
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.msp-header__nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 0.75rem;
  bottom: 0.35rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1d4ed8, #f97316);
  opacity: 0;
  transform: scaleX(0.6);
  transform-origin: center;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.msp-header__nav-link:hover,
.msp-header__nav-link:focus-visible {
  background-color: rgba(37, 99, 235, 0.06);
  color: #1d4ed8;
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.12);
  outline: none;
}

.msp-header__nav-link:focus-visible {
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.85), 0 0 0 3px rgba(59, 130, 246, 0.85);
}

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

.msp-header__nav-item--secondary .msp-header__nav-link {
  background-color: #0f172a;
  color: #f9fafb;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.35);
}

.msp-header__nav-item--secondary .msp-header__nav-link::after {
  display: none;
}

.msp-header__nav-item--secondary .msp-header__nav-link:hover,
.msp-header__nav-item--secondary .msp-header__nav-link:focus-visible {
  background: linear-gradient(135deg, #1d4ed8, #f97316);
  color: #ffffff;
}

.msp-header__toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.14);
  background-color: #ffffff;
  padding: 0.35rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  flex-direction: column;
  transition: background-color 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.msp-header__toggle-bar {
  width: 1.35rem;
  height: 2px;
  border-radius: 999px;
  background-color: #0f172a;
  transition: transform 0.18s ease, opacity 0.18s ease, background-color 0.18s ease;
}

.msp-header__toggle:hover,
.msp-header__toggle:focus-visible {
  background-color: rgba(15, 23, 42, 0.04);
  border-color: rgba(37, 99, 235, 0.5);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.35);
  outline: none;
}

.msp-header__toggle[aria-expanded="true"] .msp-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.msp-header__toggle[aria-expanded="true"] .msp-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.msp-header__toggle[aria-expanded="true"] .msp-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

@media (max-width: 768px) {
  .msp-header__inner {
    padding-block: 0.5rem;
  }

  .msp-header__toggle {
    display: inline-flex;
  }

  .msp-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
  }

  .msp-header__nav-list {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 1rem 0.75rem;
    flex-direction: column;
    align-items: stretch;
  }

  .msp-header__nav-item {
    width: 100%;
  }

  .msp-header__nav-link {
    width: 100%;
    justify-content: space-between;
    padding-inline: 0.9rem;
  }

  .msp-header__nav-link::after {
    display: none;
  }

  .msp-header__nav--open {
    opacity: 1;
    transform: scaleY(1);
    pointer-events: auto;
  }
}

@media (max-width: 480px) {
  .msp-header__logo-text {
    font-size: 1rem;
  }
}