.not-found-section {
  position: relative;
  isolation: isolate;
  display: grid;
  min-height: 100vh;
  place-items: center;
  overflow: hidden;
  padding: clamp(5rem, 12vw, 9rem) var(--space-lg);
  background:
    radial-gradient(circle at 50% 0%, var(--color-primary-bg) 0, transparent 38%),
    var(--color-bg);
}

.not-found-section--product {
  min-height: min(720px, 72vh);
  margin-top: var(--space-lg);
  border-radius: var(--radius-2xl);
}

.not-found-glow {
  position: absolute;
  z-index: -2;
  top: clamp(-10rem, -12vw, -6rem);
  left: 50%;
  width: clamp(18rem, 42vw, 36rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-surface), var(--color-primary-bg));
  filter: blur(54px);
  opacity: 0.9;
  transform: translateX(-50%);
}

.not-found-number {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: clamp(12rem, 34vw, 32rem);
  font-weight: 800;
  line-height: 0.75;
  letter-spacing: -0.08em;
  opacity: 0.12;
  pointer-events: none;
  transform: translate(-50%, -50%);
  user-select: none;
  white-space: nowrap;
}

.not-found-content {
  width: min(100%, 46rem);
  text-align: center;
}

.not-found-label {
  margin-bottom: var(--space-md);
  color: var(--color-primary-text);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.not-found-title {
  max-width: 44rem;
  margin: 0 auto var(--space-md);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.not-found-section--product .not-found-title {
  font-size: clamp(2.25rem, 5vw, 4rem);
}

.not-found-description {
  max-width: 36rem;
  margin: 0 auto;
  color: var(--color-text-secondary);
  font-size: clamp(var(--text-xl), 2vw, 1.125rem);
  line-height: 1.7;
  text-wrap: balance;
}

.not-found-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.not-found-actions .not-found-button {
  min-height: 44px;
  border-radius: var(--radius-full);
}

.not-found-actions .btn-secondary {
  border-color: var(--color-primary-light);
}

.not-found-actions .btn-secondary:hover:not(:disabled) {
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
}

.not-found-actions .not-found-button:focus-visible,
.not-found-links a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
}

.not-found-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
  margin-top: var(--space-xl);
  color: var(--color-text-secondary);
  font-size: var(--text-base);
}

.not-found-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 4px;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.not-found-links a:hover {
  color: var(--color-primary-dark);
  text-decoration-color: currentColor;
}

@media (prefers-reduced-motion: no-preference) {
  .not-found-content {
    animation: not-found-enter 0.55s ease-out both;
  }

  @keyframes not-found-enter {
    from {
      opacity: 0;
      transform: translateY(18px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (max-width: 560px) {
  .not-found-section {
    padding-inline: var(--space-md);
  }

  .not-found-actions {
    flex-direction: column;
    width: min(100%, 21rem);
    margin-inline: auto;
  }

  .not-found-actions .not-found-button {
    width: 100%;
  }

  .not-found-links {
    flex-direction: column;
    align-items: center;
    gap: var(--space-2xs);
  }
}