/* Green Editorial — tokens de design compartilhados pelas três páginas.
   Creme e verde-floresta, serifada editorial para títulos, monoespaçada para
   rótulos. Tema claro e escuro pelos mesmos tokens. */

:root {
  --bg: #f8f8f8;
  --ink: #0f1410;
  --ink-78: rgba(15, 20, 16, 0.78);
  --ink-65: rgba(15, 20, 16, 0.65);
  --ink-50: rgba(15, 20, 16, 0.5);
  --ink-45: rgba(15, 20, 16, 0.45);
  --ink-40: rgba(15, 20, 16, 0.4);
  --ink-20: rgba(15, 20, 16, 0.2);
  --ink-16: rgba(15, 20, 16, 0.16);
  --line: rgba(15, 20, 16, 0.12);
  --green: #1f5a3a;
  --green-soft: #3ea568;
  --spec-rgb: 31, 90, 58;

  /* Pilhas com fallback CJK para o idioma 中文, sem download extra de fonte */
  --serif: 'Newsreader', Georgia, 'Songti SC', 'Noto Serif CJK SC', serif;
  --sans: 'Geist', Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas,
    'PingFang SC', 'Microsoft YaHei', monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #0d110e;
    --ink: #eaeee8;
    --ink-78: rgba(234, 238, 232, 0.78);
    --ink-65: rgba(234, 238, 232, 0.62);
    --ink-50: rgba(234, 238, 232, 0.5);
    --ink-45: rgba(234, 238, 232, 0.45);
    --ink-40: rgba(234, 238, 232, 0.4);
    --ink-20: rgba(234, 238, 232, 0.22);
    --ink-16: rgba(234, 238, 232, 0.18);
    --line: rgba(234, 238, 232, 0.14);
    --green: #7fc79b;
    --green-soft: #a8dcbd;
    --spec-rgb: 168, 220, 189;
  }
}

:root[data-theme='dark'] {
  --bg: #0d110e;
  --ink: #eaeee8;
  --ink-78: rgba(234, 238, 232, 0.78);
  --ink-65: rgba(234, 238, 232, 0.62);
  --ink-50: rgba(234, 238, 232, 0.5);
  --ink-45: rgba(234, 238, 232, 0.45);
  --ink-40: rgba(234, 238, 232, 0.4);
  --ink-20: rgba(234, 238, 232, 0.22);
  --ink-16: rgba(234, 238, 232, 0.18);
  --line: rgba(234, 238, 232, 0.14);
  --green: #7fc79b;
  --green-soft: #a8dcbd;
  --spec-rgb: 168, 220, 189;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
}

a {
  color: var(--green);
}

a:hover {
  color: var(--green-soft);
}

:focus-visible {
  outline: 2px solid var(--green-soft);
  outline-offset: 3px;
}

/* Seletor de idioma — compartilhado pelas duas páginas */
.lang-select {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 5px 6px;
  background: transparent;
  cursor: pointer;
  border-radius: 2px;
  border: 1px solid var(--ink-20);
  color: var(--ink-50);
  appearance: none;
  -webkit-appearance: none;
  text-align: center;
}

/* Sem isso, o dropdown nativo herda fundo branco em modo escuro no Firefox/Windows */
.lang-select option {
  background: var(--bg);
  color: var(--ink);
}

/* Botão de tema — cartão e home */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 5px 8px;
  background: transparent;
  border: 1px solid var(--ink-20);
  border-radius: 2px;
  color: var(--ink-50);
  cursor: pointer;
}

/* Lua no tema claro (clique → escuro), sol no tema escuro (clique → claro) */
.theme-toggle svg {
  display: block;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle.is-dark .icon-sun {
  display: block;
}

.theme-toggle.is-dark .icon-moon {
  display: none;
}

/* Rótulos monoespaçados de seção */
.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
}

.section-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-45);
}

/* Campo de partículas WebGL — fundo da home e do cartão */
.particles {
  position: fixed;
  inset: 0;
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}

/* Fila de ícones de contato */
.links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
}

.links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  text-decoration: none;
  transition: color 0.2s ease;
}

.links a:hover,
.links a:focus-visible {
  color: var(--green-soft);
}

.links svg {
  display: block;
}

.copied {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--green);
}

.copied[hidden] {
  display: none;
}

/* Anel especular dos botões — ver assets/specular.js */
.spec-ring {
  position: absolute;
  inset: -1px;
  border-radius: 23px;
  padding: 1px;
  pointer-events: none;
  background: conic-gradient(
    from var(--spec-from, 121deg),
    rgba(var(--spec-rgb), 0) 0deg,
    rgba(var(--spec-rgb), var(--spec-a, 0.35)) 8deg,
    rgba(var(--spec-rgb), 0) 30deg,
    rgba(var(--spec-rgb), 0) 158deg,
    rgba(var(--spec-rgb), var(--spec-a, 0.35)) 188deg,
    rgba(var(--spec-rgb), 0) 210deg,
    rgba(var(--spec-rgb), 0) 360deg
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: var(--spec-op, 0);
  transition: opacity 0.3s ease;
}

.shell {
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
}

.rule {
  position: relative;
  height: 1px;
  background: var(--line);
  margin: 0 auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}