/* ============================================================
   BASE — reset, fundo, shell e navegacao.
   Menu como sumario: icone + rotulo em serifada, sem barra de
   icones. Abaixo de 760px vira gaveta pela esquerda.
   ============================================================ */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--txt);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  /* Radiais coloridas sobre grade de 56px (WikiMM). */
  background:
    radial-gradient(1100px 560px at 10% -10%, rgba(47, 109, 240, 0.16), transparent 58%),
    radial-gradient(980px 620px at 104% 4%, rgba(124, 58, 237, 0.14), transparent 55%),
    radial-gradient(860px 520px at 46% 112%, rgba(8, 145, 178, 0.12), transparent 60%),
    linear-gradient(rgba(47, 109, 240, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 109, 240, 0.045) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, auto, 56px 56px, 56px 56px, auto;
  background-attachment: fixed, fixed, fixed, scroll, scroll, scroll;
}

/* Foco visivel em tudo que responde ao teclado. O halo de 3px e o
   mesmo dos inputs -- uma linguagem so para "isto esta ativo". */
:focus-visible {
  outline: 2px solid var(--ac-blue);
  outline-offset: 2px;
}

/* -------------------------------------------------- pular para o conteudo */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 40;
  background: var(--panel);
  border: 1px solid var(--ac-blue);
  border-radius: var(--r-box);
  padding: 10px 16px;
  font-size: 13px;
  color: var(--txt);
}
.skip:focus {
  left: 12px;
  top: 12px;
}

/* -------------------------------------------------- menu lateral */
.side {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  z-index: 10;
  display: flex;
  flex-direction: column;
  padding: 30px 0 18px;
  background: linear-gradient(rgba(255, 255, 255, 0.97), rgba(255, 255, 255, 0.9));
  backdrop-filter: blur(8px);
  border-right: 1px solid var(--line);
}

.brand {
  display: block;
  padding: 0 26px 34px;
  text-decoration: none;
}
.brand .n1 {
  display: block;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--txt);
  font-variation-settings: "SOFT" 40, "WONK" 1;
}
.brand .n1 em {
  font-style: normal;
  color: var(--ac-blue);
}
.brand .n2 {
  display: block;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--faint);
}

.nav {
  display: flex;
  flex-direction: column;
}

/* Rotulo de grupo com um filete que ocupa o resto da linha. */
.nav-group {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 24px 26px 10px;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.28em;
  color: var(--faint);
}
.nav-group::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.nav a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 26px;
  text-decoration: none;
  transition: background 0.16s;
}
.nav a svg {
  flex: 0 0 auto;
  color: var(--faint);
  transition: color 0.16s;
}
.nav a .label {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.012em;
  color: var(--dim);
  font-variation-settings: "SOFT" 24, "WONK" 0;
  transition: color 0.16s;
}
/* Filete do item ativo, na cor do acento do proprio item. */
.nav a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  bottom: 7px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: transparent;
  transition: background 0.16s;
}
.nav a:hover {
  background: color-mix(in srgb, var(--ac) 5%, var(--panel));
}
.nav a:hover .label {
  color: var(--txt);
}
.nav a:hover svg {
  color: var(--ac);
}
.nav a[aria-current="page"] {
  background: color-mix(in srgb, var(--ac) 8%, var(--panel));
}
.nav a[aria-current="page"]::before {
  background: var(--ac);
}
.nav a[aria-current="page"] .label {
  color: var(--txt);
  font-weight: 600;
  font-variation-settings: "SOFT" 40, "WONK" 1;
}
.nav a[aria-current="page"] svg {
  color: var(--ac);
}

/* Acento por item: uma classe, e color-mix() faz o resto. */
.ac-blue { --ac: var(--ac-blue); }
.ac-purple { --ac: var(--ac-purple); }
.ac-cyan { --ac: var(--ac-cyan); }
.ac-green { --ac: var(--ac-green); }
.ac-amber { --ac: var(--ac-amber); }
.ac-pink { --ac: var(--ac-pink); }
.ac-yellow { --ac: var(--ac-yellow); }

.side .side-foot {
  margin: auto 26px 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 9.5px;
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: var(--faint);
}

/* -------------------------------------------------- conteudo */
.wrap {
  margin-left: var(--sidebar-w);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px var(--gap-page);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(rgba(233, 237, 246, 0.94), rgba(233, 237, 246, 0.7));
  backdrop-filter: blur(6px);
}
.topbar h1 {
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 400;
  letter-spacing: -0.02em;
  font-variation-settings: "SOFT" 30, "WONK" 1;
}

.menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  cursor: pointer;
  color: var(--dim);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-box);
}

main {
  padding: 6px 0 70px;
}

.scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9;
  background: rgba(26, 34, 50, 0.4);
}

/* -------------------------------------------------- responsivo */
/* Breakpoints do WikiMM: 620 / 760 / 900 / 1000. */

@media (max-width: 900px) {
  .hide-md {
    display: none;
  }
}

@media (max-width: 760px) {
  /* Radial com attachment fixed repinta a cada quadro de rolagem;
     no celular isso e visivel. Licao herdada do WikiMM. */
  body {
    background-attachment: scroll;
  }

  .side {
    width: 262px;
    transform: translateX(-102%);
    transition: transform 0.25s ease;
    box-shadow: 20px 0 50px rgba(30, 40, 60, 0.18);
  }
  .side.aberta {
    transform: none;
  }
  .side.aberta ~ .scrim {
    display: block;
  }
  /* Alvo de toque de 44px. min-height em vez de padding calculado: o rotulo
     e Fraunces em 16px e a altura da linha muda com o peso do item ativo. */
  .nav a {
    min-height: 44px;
    padding: 10px 26px;
  }

  .wrap {
    margin-left: 0;
  }
  .menu-btn {
    display: block;
  }

  .topbar {
    flex-wrap: wrap;
    gap: 10px 12px;
    padding: 12px var(--gap-page-sm);
    backdrop-filter: none;
    background: rgba(233, 237, 246, 0.97);
  }
  .topbar h1 {
    font-size: 20px;
  }
}

@media (max-width: 620px) {
  .topbar h1 {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}