/* Nexus — base: reset, navegação mínima, acessibilidade. */

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--nx-void);
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  min-height: 100svh;
  color: var(--nx-text);
  background: var(--nx-void);
  font-family: var(--font-display);
  font-size: var(--text-body);
  line-height: 1.5;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }
button { font: inherit; color: inherit; }

::selection { background: rgba(32, 214, 231, .30); color: #fff; }

/* Foco: nunca removido sem substituto. */
:focus-visible {
  outline: 2px solid rgba(32, 214, 231, .85);
  outline-offset: 4px;
  border-radius: 6px;
}

/* ───────── Skip link ───────── */
.skip-link {
  position: fixed; left: 12px; top: 12px; z-index: 9999;
  transform: translateY(-160%);
  background: #F8FAFC; color: #02040A;
  padding: 10px 14px; border-radius: 10px;
  font-size: 14px; font-weight: 600; text-decoration: none;
  transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus { transform: none; }

/* ───────── Header ───────── */
.nx-header {
  position: fixed; inset: 0 0 auto; z-index: 50;
  min-height: 76px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  pointer-events: none;
}
.nx-header > * { pointer-events: auto; }

/* Véu muito sutil: mantém o logo e os links legíveis sobre o texto que rola por baixo. */
.nx-header-veil {
  position: fixed; inset: 0 0 auto; height: 108px; z-index: 49; pointer-events: none;
  background: linear-gradient(to bottom, rgba(2, 4, 10, .78), rgba(2, 4, 10, .38) 55%, rgba(2, 4, 10, 0));
}

.nx-logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--nx-text); text-decoration: none;
  font-weight: 700; font-size: 15px; letter-spacing: .14em;
}
.nx-logo svg { width: 22px; height: 22px; flex: none; }

.nx-nav { display: flex; gap: 28px; margin-inline: auto; }
.nx-nav a {
  position: relative; padding: 14px 0; min-height: 44px;
  color: var(--nx-muted); text-decoration: none;
  font-size: var(--text-nav); letter-spacing: .025em; line-height: 1.2;
  transition: color var(--dur-fast) var(--ease-out);
}
.nx-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 1px;
  background: var(--nx-gradient-signal);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.nx-nav a:hover, .nx-nav a:focus-visible, .nx-nav a[aria-current="true"] { color: var(--nx-text); }
.nx-nav a:hover::after, .nx-nav a:focus-visible::after, .nx-nav a[aria-current="true"]::after { transform: scaleX(1); }

.nx-header-actions { display: flex; align-items: center; gap: 12px; }

.nx-menu-btn {
  display: none; width: 44px; height: 44px; padding: 0;
  align-items: center; justify-content: center;
  background: transparent; border: 1px solid rgba(168, 179, 199, .22); border-radius: var(--radius-pill);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.nx-menu-btn:hover { border-color: rgba(125, 211, 252, .5); }
.nx-menu-btn span, .nx-menu-btn span::before {
  display: block; width: 16px; height: 1.5px; background: var(--nx-text); border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out);
}
.nx-menu-btn span { position: relative; }
.nx-menu-btn span::before { content: ""; position: absolute; top: 5px; left: 0; }
.nx-menu-btn span { transform: translateY(-2.5px); }
.nx-menu-btn[aria-expanded="true"] span { transform: translateY(0) rotate(45deg); }
.nx-menu-btn[aria-expanded="true"] span::before { transform: translateY(-5px) rotate(-90deg); top: 5px; }

/* Menu mobile: único uso funcional de “Surface”. */
.nx-menu {
  position: fixed; z-index: 48; inset: 0; padding: 92px 24px 32px;
  background: var(--nx-surface);
  display: flex; flex-direction: column; gap: 6px;
  visibility: hidden; opacity: 0; transform: translate3d(0, -8px, 0);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), visibility 0s linear var(--dur-base);
}
.nx-menu.is-open { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
html.nx-menu-open { overflow: hidden; }
.nx-menu a {
  display: block; padding: 16px 4px; text-decoration: none;
  font-size: clamp(28px, 8vw, 40px); letter-spacing: -.03em; color: var(--nx-text);
  border-bottom: 1px solid rgba(168, 179, 199, .12);
}
.nx-menu a:hover, .nx-menu a:focus-visible { color: var(--nx-cyan); }

/* ───────── Rodapé mínimo ───────── */
.nx-footer {
  position: relative; z-index: 2;
  padding-block: 28px 36px;
  color: var(--nx-dim); font-size: 13px; letter-spacing: .02em;
}

@media (max-width: 860px) {
  .nx-nav { display: none; }
  .js .nx-menu-btn { display: inline-flex; }
  .nx-header { min-height: 68px; gap: 12px; }
  .nx-header-actions { gap: 10px; }
  .nx-header-veil { height: 92px; }
}

@media (min-width: 861px) {
  .nx-menu { display: none !important; }
}