html {
  /*
   * Evita que destinos de links internos
   * fiquem escondidos atrás do cabeçalho.
   */
  scroll-padding-top: 6rem;
}

#home,
#about,
#now {
  scroll-margin-top: 6rem;
}

.skip-link {
  position: fixed;
  inset: var(--space-3) auto auto var(--space-3);

  z-index: 200;

  padding: var(--space-3) var(--space-4);

  color: var(--color-background);
  background-color: var(--color-accent);

  border-radius: var(--radius-sm);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;

  transform: translateY(calc(-100% - var(--space-5)));

  transition: transform var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;

  padding: var(--space-3) var(--page-padding);

  pointer-events: none;
}

.site-header__inner {
  position: relative;

  display: grid;

  grid-template-columns:
    minmax(0, 1fr)
    auto
    minmax(0, 1fr);

  align-items: center;

  width: min(100%, var(--content-max-width));

  min-height: 3.5rem;

  margin-inline: auto;

  padding: var(--space-2) var(--space-3);

  background-color: rgb(7 9 11 / 48%);

  border: var(--border-width) solid rgb(255 255 255 / 8%);

  border-radius: var(--radius-lg);

  box-shadow:
    0 12px 40px rgb(0 0 0 / 16%),
    inset 0 1px 0 rgb(255 255 255 / 4%);

  backdrop-filter: blur(14px) saturate(120%);

  transition:
    background-color var(--duration-normal) var(--ease-standard),
    border-color var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);

  pointer-events: auto;
}

.site-header[data-scrolled="true"] .site-header__inner {
  background-color: rgb(7 9 11 / 82%);

  border-color: var(--color-border);

  box-shadow:
    0 18px 50px rgb(0 0 0 / 30%),
    inset 0 1px 0 var(--glass-highlight);
}

.site-brand {
  grid-column: 1;

  justify-self: start;

  display: inline-flex;
  align-items: center;

  gap: var(--space-3);

  min-width: 0;

  color: var(--color-text-primary);

  text-decoration: none;
}

.site-brand__mark {
  display: grid;
  place-items: center;

  width: 2rem;
  aspect-ratio: 1;

  flex-shrink: 0;

  color: var(--color-accent);
  background-color: var(--color-accent-soft);

  border: var(--border-width) solid rgb(159 232 194 / 24%);

  border-radius: var(--radius-sm);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.04em;
}

.site-brand__name {
  overflow: hidden;

  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);

  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-navigation {
  grid-column: 2;

  justify-self: center;

  display: flex;
  align-items: center;

  padding: var(--space-1);

  background-color: rgb(255 255 255 / 3%);

  border: var(--border-width) solid rgb(255 255 255 / 6%);

  border-radius: var(--radius-pill);
}

.site-navigation__link {
  position: relative;

  padding: var(--space-2) var(--space-4);

  color: var(--color-text-muted);

  border-radius: var(--radius-pill);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  text-decoration: none;

  transition:
    color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard);
}

.site-navigation__link:hover {
  color: var(--color-text-primary);
}

.site-navigation__link[aria-current="location"],
.site-navigation__link[aria-current="page"] {
  color: var(--color-text-primary);
  background-color: var(--color-surface-hover);
}

.site-navigation__link[aria-current="location"]::after,
.site-navigation__link[aria-current="page"]::after {
  position: absolute;

  inset: auto 50% 0.2rem auto;

  width: 0.25rem;
  aspect-ratio: 1;

  content: "";

  background-color: var(--color-accent);

  border-radius: var(--radius-pill);

  transform: translateX(50%);

  box-shadow: 0 0 0.6rem rgb(159 232 194 / 55%);
}

.site-header__terminal {
  grid-column: 3;

  justify-self: end;

  display: inline-flex;
  align-items: center;

  gap: var(--space-2);

  padding: var(--space-2) var(--space-3);

  color: var(--color-accent);
  background-color: var(--color-accent-soft);

  border: var(--border-width) solid rgb(159 232 194 / 20%);

  border-radius: var(--radius-sm);

  cursor: pointer;

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  text-decoration: none;

  transition:
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-out);
}

.site-header__navigation-toggle {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;

  display: none;
  place-items: center;

  width: 2.25rem;
  aspect-ratio: 1;

  padding: 0;

  color: var(--color-text-primary);
  background-color: var(--color-surface);

  border: var(--border-width) solid var(--color-border);

  border-radius: var(--radius-sm);

  cursor: pointer;
}

.site-header__navigation-toggle-icon {
  display: grid;
  gap: 0.3rem;

  width: 1rem;
}

.site-header__navigation-toggle-icon span {
  display: block;

  height: 1px;

  background-color: currentColor;

  transition: transform var(--duration-fast) var(--ease-standard);
}

.site-header[data-navigation-open="true"]
  .site-header__navigation-toggle-icon
  span:first-child {
  transform: translateY(0.2rem) rotate(45deg);
}

.site-header[data-navigation-open="true"]
  .site-header__navigation-toggle-icon
  span:last-child {
  transform: translateY(-0.2rem) rotate(-45deg);
}

.site-header__terminal:hover {
  background-color: rgb(159 232 194 / 18%);

  border-color: rgb(159 232 194 / 34%);
}

.site-header__terminal:active {
  transform: translateY(1px);
}

/* Footer */

.site-footer {
  position: relative;

  padding: var(--space-8) var(--page-padding);

  background: linear-gradient(
    to bottom,
    var(--color-background),
    rgb(12 15 18 / 95%)
  );

  border-top: var(--border-width) solid var(--color-border);
}

.site-footer__inner {
  display: grid;

  grid-template-columns:
    minmax(0, 1.2fr)
    auto
    minmax(0, 1fr)
    auto;

  align-items: end;

  gap: clamp(var(--space-5), 5vw, var(--space-8));

  width: min(100%, var(--content-max-width));

  margin-inline: auto;
}

.site-footer__identity {
  display: grid;
  gap: var(--space-2);

  max-width: 28rem;
}

.site-footer__brand {
  color: var(--color-text-primary);

  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
}

.site-footer__description {
  color: var(--color-text-muted);

  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.site-footer__navigation {
  display: grid;
  gap: var(--space-2);

  align-content: start;
}

.site-footer__navigation a,
.site-footer__back-to-top {
  color: var(--color-text-secondary);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  text-decoration: none;

  transition: color var(--duration-fast) var(--ease-standard);
}

.site-footer__navigation a:hover,
.site-footer__back-to-top:hover {
  color: var(--color-accent);
}

.site-footer__meta {
  display: grid;
  gap: var(--space-2);

  color: var(--color-text-muted);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  line-height: var(--line-height-relaxed);
}

.site-footer__back-to-top {
  justify-self: end;

  display: inline-flex;
  align-items: center;

  gap: var(--space-2);

  white-space: nowrap;
}

@media (max-width: 56rem) {
  .site-footer__inner {
    grid-template-columns:
      minmax(0, 1fr)
      auto;

    align-items: start;
  }

  .site-footer__meta {
    grid-column: 1;
  }

  .site-footer__back-to-top {
    grid-column: 2;
    grid-row: 2;

    align-self: end;
  }
}

@media (max-width: 56rem) {
  .site-header:not([data-site-shell-ready="true"]) .site-header__inner {
    grid-template-columns:
      minmax(0, 1fr)
      auto;
  }

  .site-header:not([data-site-shell-ready="true"]) .site-navigation {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: stretch;

    justify-content: center;

    flex-wrap: wrap;
  }

  .site-header:not([data-site-shell-ready="true"])
    .site-header__terminal {
    grid-column: 2;
  }

  .site-header[data-site-shell-ready="true"]
    .site-header__navigation-toggle {
    display: grid;
  }

  .site-header[data-site-shell-ready="true"] .site-navigation {
    position: absolute;
    inset: calc(100% + var(--space-2)) 0 auto;

    display: none;
    align-items: stretch;

    padding: var(--space-2);

    background-color: rgb(7 9 11 / 94%);

    border-color: var(--color-border);

    border-radius: var(--radius-lg);

    box-shadow: var(--shadow-panel);

    backdrop-filter: blur(14px) saturate(120%);
  }

  .site-header[data-site-shell-ready="true"][data-navigation-open="true"]
    .site-navigation {
    display: grid;
  }

  .site-header[data-site-shell-ready="true"] .site-navigation__link {
    padding: var(--space-3) var(--space-4);

    text-align: center;
  }
}

@media (max-width: 40rem) {
  html {
    scroll-padding-top: 5rem;
  }

  #home,
  #about,
  #now {
    scroll-margin-top: 5rem;
  }

  .site-header {
    padding: var(--space-2) var(--space-2);
  }

  .site-header__inner {
    min-height: 3.25rem;

    padding: var(--space-1) var(--space-2);
  }

  .site-brand__name,
  .site-header__terminal-label {
    display: none;
  }

  .site-header__terminal {
    padding: var(--space-2);
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .site-footer__navigation {
    display: flex;
    flex-wrap: wrap;

    gap: var(--space-3) var(--space-5);
  }

  .site-footer__meta,
  .site-footer__back-to-top {
    grid-column: auto;
    grid-row: auto;
  }

  .site-footer__back-to-top {
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .skip-link,
  .site-header__inner,
  .site-navigation__link,
  .site-header__navigation-toggle-icon span,
  .site-header__terminal,
  .site-footer__navigation a,
  .site-footer__back-to-top {
    transition-duration: 1ms;
  }
}