:root {
  --chat-fundo: #eee9df;
  --chat-painel: #fffdf8;
  --chat-cabecalho: #1e6b58;
  --chat-texto: #26352d;
  --chat-secundario: #5c6d63;
  --chat-recebida: #fffdf8;
  --chat-enviada: #d7edc2;
  --chat-selecao: #edf5e6;
  --chat-borda: #cfd8cc;
  --chat-sombra: 0 18px 50px rgb(35 54 42 / 12%);
  --chat-raio: 18px;
  --focus: #bb4d2f;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("assets/IBMPlexSans-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("assets/IBMPlexSans-Medium.ttf") format("truetype");
  font-weight: 500 700;
  font-style: normal;
  font-display: swap;
}

:root[data-theme="night"] {
  --chat-fundo: #17221d;
  --chat-painel: #22332c;
  --chat-cabecalho: #0b6b5e;
  --chat-texto: #edf5ef;
  --chat-secundario: #b8c9be;
  --chat-recebida: #263b32;
  --chat-enviada: #315b3c;
  --chat-selecao: #2d4939;
  --chat-borda: #466353;
  --focus: #f0c95e;
}

:root[data-theme="olive"] {
  --chat-fundo: #e8e3d2;
  --chat-painel: #fffdf5;
  --chat-cabecalho: #4f6b3c;
  --chat-texto: #29351f;
  --chat-secundario: #60705b;
  --chat-recebida: #fffdf5;
  --chat-enviada: #dbe9b9;
  --chat-selecao: #edf3dc;
  --chat-borda: #c9d4b8;
  --focus: #a73c2a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--chat-fundo);
  color: var(--chat-texto);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  line-height: 1.55;
}
button, a { font: inherit; }
a { color: inherit; }
button:focus-visible, a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.site-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}
.side-nav {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 32px 24px;
  background: var(--chat-painel);
  border-right: 1px solid var(--chat-borda);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}
.brand-mark, .avatar {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--chat-cabecalho);
  color: #fff;
  font-weight: 700;
  overflow: hidden;
}
.brand-mark { width: 44px; height: 44px; font-size: 13px; }
.brand-mark img, .avatar img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 15px; }
.brand small { color: var(--chat-secundario); font-size: 12px; }
.side-nav nav { display: grid; gap: 8px; }
.side-nav nav a {
  padding: 11px 12px;
  border-radius: 10px;
  color: var(--chat-secundario);
  text-decoration: none;
}
.side-nav nav a:hover, .side-nav nav a[aria-current="page"] {
  color: var(--chat-texto);
}
.side-nav nav a:hover { border-color: var(--chat-cabecalho); background: transparent; }
.side-nav nav a[aria-current="page"] {
  background: var(--chat-selecao);
  box-shadow: inset 3px 0 0 var(--chat-cabecalho);
}
.theme-toggle, .mobile-theme-toggle, .reset-button {
  border: 1px solid var(--chat-borda);
  border-radius: 999px;
  background: transparent;
  color: var(--chat-texto);
  cursor: pointer;
}
.theme-toggle { align-self: flex-start; padding: 8px 12px; margin-top: auto; }

.chat-main {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 100vh;
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px clamp(20px, 5vw, 64px);
  background: var(--chat-cabecalho);
  color: #fff;
}
.avatar { width: 50px; height: 50px; }
.identity-name, .identity-status { margin: 0; }
.identity-name { font-weight: 700; }
.identity-status { font-size: 13px; opacity: .85; }
.identity-subtitle { margin: 0; font-size: 13px; opacity: .9; }
.mobile-theme-toggle { display: none; margin-left: auto; padding: 7px 11px; border-color: rgb(255 255 255 / 45%); color: #fff; }
.conversation { padding: 32px clamp(20px, 7vw, 100px); }
.conversation-inner { width: min(760px, 100%); margin: 0 auto; }
.message {
  width: fit-content;
  max-width: min(650px, 90%);
  margin: 0 0 16px;
  padding: 14px 17px;
  border: 1px solid var(--chat-borda);
  border-radius: var(--chat-raio);
  box-shadow: 0 4px 12px rgb(35 54 42 / 5%);
}
.message-received { background: var(--chat-recebida); border-top-left-radius: 5px; }
.message-sent { margin-left: auto; background: var(--chat-enviada); border-top-right-radius: 5px; }
.message-primary { border: 2px solid var(--chat-cabecalho); }
.message p { margin: 0; }
.message a { font-weight: 600; text-decoration-thickness: 2px; text-underline-offset: 3px; }
.message address { margin: 8px 0; font-style: normal; }
.message code { overflow-wrap: anywhere; }
.copy-button { margin-left: 8px; padding: 3px 8px; border: 1px solid var(--chat-borda); border-radius: 999px; background: transparent; color: var(--chat-texto); cursor: pointer; font-size: 12px; }
.message-meta { margin-top: 7px !important; color: var(--chat-secundario); font-size: 12px; }
.message-title { margin: 0 0 4px; font-size: 16px; }
.reading-panel {
  margin-top: 24px;
  padding: 22px;
  border: 1px solid var(--chat-borda);
  border-radius: var(--chat-raio);
  background: var(--chat-painel);
}
.reading-panel h2 { margin: 0 0 12px; font-size: 20px; }
.reading-panel ul { margin: 12px 0 0; padding-left: 20px; }
.reading-panel .back-link { margin-top: 18px; }
.navigation-bar {
  padding: 18px clamp(20px, 7vw, 100px) 24px;
  border-top: 1px solid var(--chat-borda);
  background: var(--chat-painel);
}
.navigation-hint { margin: 0 auto 12px; width: min(760px, 100%); color: var(--chat-secundario); font-size: 13px; }
.choice-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; width: min(760px, 100%); margin: 0 auto; }
.choice-button {
  min-height: 52px;
  padding: 10px 12px;
  border: 1px solid var(--chat-borda);
  border-radius: 13px;
  background: var(--chat-selecao);
  color: var(--chat-texto);
  cursor: pointer;
  text-align: left;
}
.choice-button:hover { border-color: var(--chat-cabecalho); }
.reset-button { display: block; padding: 7px 12px; margin: 14px auto 0; color: var(--chat-secundario); font-size: 13px; }
.noscript { max-width: 640px; margin: 40px auto; padding: 20px; }
.post-main { max-width: 800px; margin: 0 auto; padding: 40px 20px 80px; }
.post-main h1 { margin: 24px 0 16px; }
.post-back { display: inline-block; margin-bottom: 18px; }
.post-search { display: grid; gap: 6px; margin: 20px 0; color: var(--chat-secundario); }
.post-search input { width: 100%; padding: 11px 13px; border: 1px solid var(--chat-borda); border-radius: 10px; background: var(--chat-painel); color: var(--chat-texto); }
.post-card { margin: 0 0 16px; padding: 18px; border: 1px solid var(--chat-borda); border-radius: var(--chat-raio); background: var(--chat-painel); }
.post-card h2 { margin: 0 0 6px; font-size: 20px; }
.post-card p, .post-summary { margin: 6px 0; }
.post-meta { color: var(--chat-secundario); font-size: 13px; }
.post-image { display: block; max-width: 100%; height: auto; margin: 22px 0; border-radius: var(--chat-raio); }
.post-body { margin-top: 28px; }

@media (max-width: 900px) {
  .site-shell { display: block; }
  .side-nav { display: none; }
  .mobile-theme-toggle { display: block; }
  .chat-header { min-height: 78px; }
  .conversation { padding: 24px 16px; }
  .navigation-bar { padding: 16px; }
  .choice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .message { max-width: 94%; }
  .choice-grid { grid-template-columns: 1fr; }
  .choice-button { min-height: 48px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

[hidden] { display: none !important; }
.timeline { list-style: none; padding: 0 0 0 22px; margin: 24px 0 0; border-left: 2px solid var(--chat-borda); }
.timeline > li { position: relative; padding: 0 0 36px 8px; }
.timeline > li:last-child { padding-bottom: 0; }
.timeline > li::before { content: ""; position: absolute; left: -29px; top: 8px; width: 10px; height: 10px; border-radius: 50%; background: var(--chat-cabecalho); }
.timeline time, .timeline figcaption { color: var(--chat-secundario); font-size: .9rem; }
.timeline h3 { margin: 6px 0 10px; font-size: 1.15rem; line-height: 1.4; }
.timeline figure { margin: 18px 0; }
.timeline img { display: block; width: 100%; height: auto; border-radius: 12px; }
.timeline figcaption { margin-top: 8px; }
.timeline-collage { display: grid; grid-template-columns: 9fr 8fr; gap: 8px; align-items: start; }
.timeline-collage img:first-child { grid-row: span 2; }
.timeline-collage img { border-radius: 6px; }
.timeline-links { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-top: 16px; }
.timeline-links a { text-underline-offset: 4px; }
.timeline > .timeline-divider { padding-bottom: 20px; }
.timeline > .timeline-divider::before { display: none; }
.timeline-divider h3 { color: var(--chat-secundario); }

/* Navegação das páginas HTML que também funcionam sem JavaScript. */
.seo-page nav { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-bottom: 28px; }
.seo-page { overflow-wrap: anywhere; }
.seo-page h1 { line-height: 1.3; }
.seo-page .timeline h2 { font-size: 1.15rem; line-height: 1.4; }