/* Componentes globais: link de pular, foco, botões, links. */

.ns-skip {
  position: absolute; inset-inline-start: 1rem; inset-block-start: -4rem; z-index: var(--ns-z-focus);
  padding: 0.75rem 1rem; background: var(--ns-blue); color: #fff; border-radius: var(--ns-r-sm); text-decoration: none;
}
.ns-skip:focus { inset-block-start: 1rem; }

:focus-visible { outline: 2px solid var(--ns-focus); outline-offset: 4px; border-radius: 2px; }
.ns-dark :focus-visible { outline-color: var(--ns-green); }

a { color: var(--ns-blue); }

/* Botão primário: Azul NS sobre claro, Verde NS (texto escuro) sobre escuro — como no manual. */
.ns-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.625rem;
  min-block-size: 3.25rem; padding: 0 1.5rem;
  font-family: var(--ns-font-text); font-size: 1rem; font-weight: 600; line-height: 1; letter-spacing: 0.005em;
  color: #fff; background: var(--ns-blue);
  border: 1px solid transparent; border-radius: var(--ns-r-sm);
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color var(--ns-dur-micro) var(--ns-ease), transform var(--ns-dur-micro) var(--ns-ease);
}
.ns-btn svg { inline-size: 1.125rem; block-size: 1.125rem; flex: none; }
.ns-btn--green, .ns-dark .ns-btn { background: var(--ns-green); color: var(--ns-night); }
.ns-btn--ghost { background: transparent; color: var(--ns-text); border-color: var(--ns-line); }
.ns-dark .ns-btn--ghost { color: var(--ns-text-on-dark); border-color: rgba(238, 242, 247, 0.24); background: transparent; }

@media (hover: hover) and (pointer: fine) {
  .ns-btn:hover { background: var(--ns-blue-hover); }
  .ns-btn--green:hover, .ns-dark .ns-btn:hover { background: var(--ns-green-hover); }
  .ns-btn--ghost:hover { background: var(--ns-paper); }
  .ns-dark .ns-btn--ghost:hover { background: rgba(238, 242, 247, 0.06); }
}
.ns-btn:active { transform: translateY(1px); }

/* Link secundário: sublinhado parcial que completa no hover. */
.ns-link {
  position: relative; display: inline-flex; align-items: center; gap: 0.5rem;
  font-weight: 600; color: var(--ns-text); text-decoration: none; padding-block: 0.25rem;
}
.ns-link::after {
  content: ""; position: absolute; inset-inline-start: 0; inset-block-end: 0; inline-size: 100%; block-size: 1px;
  background: currentColor; transform: scaleX(0.42); transform-origin: left; transition: transform var(--ns-dur-ui) var(--ns-ease);
}
.ns-link svg { inline-size: 1rem; block-size: 1rem; transition: transform var(--ns-dur-micro) var(--ns-ease); }
.ns-dark .ns-link { color: var(--ns-text-on-dark); }
@media (hover: hover) and (pointer: fine) {
  .ns-link:hover::after { transform: scaleX(1); }
  .ns-link:hover svg { transform: translateX(3px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

/* 404 */
.ns-404 { min-block-size: 80svh; display: grid; align-items: center; padding-block: calc(var(--ns-header-h) + 3rem) 5rem; }
.ns-404__inner { display: grid; gap: var(--ns-s-6); justify-items: start; }
.ns-404__title { font-size: clamp(2.5rem, 1.4rem + 4vw, 4.75rem); max-inline-size: 14ch; }
.ns-404__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--ns-s-4) var(--ns-s-8); margin-block-start: var(--ns-s-4); }