:root {
  --sidebar-w: 300px;
  --radius: 16px;
  /*! --bg: #0b0b0c; */
  --text: #f2f2f2;
  /* texto sempre legível */
  --muted: #b0b0b0;
  /* cinza suave para inativos */
  --accent: #5e9cff;
  --hover: rgba(255, 255, 255, 0.08);
  --glass: rgba(255, 255, 255, 0.06);
  --outline: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --speed: 220ms;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f8;
    --text: #0c0c0d;
    --muted: #5c636b;
    --hover: rgba(0, 0, 0, 0.06);
    --glass: rgba(255, 255, 255, 0.7);
    --outline: rgba(0, 0, 0, 0.08);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  display: flex;
}

/* Toggle */
.toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 1100;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--outline);
  background: var(--glass);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  display: grid;
  place-items: center;
  cursor: pointer transition: transform var(--speed) ease;
}

.toggle:active {
  transform: scale(0.98);
}

.toggle .bars {
  width: 20px;
  height: 15px;
  position: fixed;
}

.toggle .bars::before,
.toggle .bars::after,
.toggle .mid {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all var(--speed) ease;
}

.toggle .bars::before {
  top: 0;
}

.toggle .mid {
  top: 6px;
}

.toggle .bars::after {
  bottom: 0;
}

body.nav-open .toggle .bars::before {
  transform: translateY(6px) rotate(45deg);
}

body.nav-open .toggle .mid {
  opacity: 0;
}

body.nav-open .toggle .bars::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* Sidebar */
.sidebar {
  position: fixed;
  z-index: 1000;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  padding: 80px 14px 18px 14px;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(20px);
  border-right: 1px solid var(--outline);
  transform: translateX(calc(-1 * var(--sidebar-w)));
  transition: transform var(--speed) ease;
  box-shadow: var(--shadow);
}

body.nav-open .sidebar {
  transform: translateX(0);
}

.brand {
  position: absolute;
  top: 18px;
  left: 18px;
  right: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.brand .logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #8eb5ff, #c8d6ff 60%, #ffffff 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7),
    0 6px 18px rgba(0, 0, 0, 0.12);
}

.brand .title {
  font-weight: 600;
  letter-spacing: 0.2px;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  overflow-y: auto;
}

.item {
  border-radius: 12px;
  overflow: clip;
}

/* Links principais */
.link,
.submenu-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  color: var(--muted);
  /* cinza por padrão */
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--speed), border-color var(--speed),
    color var(--speed);
  background-color: transparent;
  /* Garante que o botão não tenha fundo padrão */
  text-align: left;
  /* Alinha o texto à esquerda */
  font-family: inherit;
  /* Herda a fonte do corpo */
  font-size: inherit;
  /* Herda o tamanho da fonte */
}

.link:hover,
.submenu-toggle:hover {
  background: var(--hover);
  color: var(--text);
}

.link[aria-current="page"] {
  border-color: var(--accent);
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}

.icon {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  opacity: 0.92;
}

.label {
  flex: 1;
}

.kbd {
  font: 12px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--muted);
  border: 1px solid var(--outline);
  border-bottom-width: 2px;
  padding: 2px 6px;
  border-radius: 8px;
  background: var(--glass);
}

/* Submenu */
.submenu {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--speed) ease;
}

.submenu[aria-hidden="false"] {
  max-height: 1000px;
  /* Valor alto para acomodar qualquer conteúdo */
}

.submenu-inner {
  overflow: hidden;
  padding-left: 34px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 6px;
  /* Adiciona espaço no topo */
  padding-bottom: 6px;
  /* Adiciona espaço embaixo */
}

.submenu-inner ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.submenu a,
.submenu .link {
  padding: 10px;
  border-radius: 10px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--speed), color var(--speed);
  display: flex;
  /* Garante alinhamento do ícone se adicionado no futuro */
  align-items: center;
}

.submenu a:hover,
.submenu .link:hover {
  background: var(--hover);
  color: var(--text);
}

/* Submenus aninhados (2º nível e além) */
.submenu .submenu {
  margin-left: 0;
}

.submenu .submenu-inner {
  padding-left: 20px;
  /* Menor indentação para níveis mais profundos */
}

/* Botões de submenu dentro de submenus */
.submenu .submenu-toggle {
  padding: 8px 10px;
  margin: 2px 0;
  border-radius: 8px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  text-align: left;
  font-family: inherit;
  font-size: inherit;
  transition: background var(--speed), color var(--speed);
}

.submenu .submenu-toggle:hover {
  background: var(--hover);
  color: var(--text);
}

.submenu-toggle .chev {
  width: 16px;
  height: 16px;
  transition: transform var(--speed) ease;
  opacity: 0.9;
  margin-left: auto;
  /* Joga a seta para a direita */
}

.submenu-toggle[aria-expanded="true"] .chev {
  transform: rotate(90deg);
}

/* Conteúdo */
.content {
  margin-left: 16px;
  padding: 24px;
  flex: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  /* Alterado para coluna */
  align-items: stretch;
  /* Estica os itens para preencher a largura */
  justify-content: flex-start;
  /* Alinha ao topo */
  text-align: left;
  /* Alinha o texto à esquerda */
  width: 100%;
}

@media (min-width: 980px) {
  .content {
    margin-left: calc(var(--sidebar-w) + 16px);
  }

  .toggle {
    left: calc(var(--sidebar-w) + 28px);
  }
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(26px, 3vw, 38px);
}

p.lead {
  margin: 0;
  color: var(--muted);
  max-width: 60ch;
}

/* A11y */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 10px;
}

/* Adições para o conteúdo dinâmico */
.page-container {
  width: 100%;
  height: 100%;
  overflow-y: auto;
}

.main-content {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  transition: margin-left 0.3s ease;
  width: 100%;
  height: 100vh;
}