/* Página da demo: papel, tinta e um único tom de vinho do Porto. Sóbria de propósito —
   o que se mostra é o assistente, não a página. */

:root {
  --paper: #efede8;
  --paper-2: #e6e2da;
  --card: #fbf9f5;
  --ink: #272420;
  --ink-2: #5b5249;
  --ink-3: #8a8076;
  --line: #d9d2c5;
  --wine: #2c2823;
  --wine-2: #12100e;
  --wine-soft: #f4ecdb;
  --gold: #a07c35;
  --serif: "NA Playfair", "Playfair Display", Georgia, serif;
  --sans: "NA Mulish", "Mulish", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, Arial, sans-serif;
  --radius: 14px;
  --wrap: 1080px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
a { color: var(--wine); }
:focus-visible { outline: 2px solid var(--wine); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 clamp(20px, 5vw, 40px); }

/* Faixa de demonstração — sempre visível, nunca confundível com o site oficial. */
.ribbon {
  background: var(--ink);
  color: #efe7da;
  font-size: 0.78rem;
  letter-spacing: 0.01em;
  text-align: center;
  padding: 8px 16px;
  line-height: 1.45;
}

.head { border-bottom: 1px solid var(--line); }
.head-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 18px; padding-bottom: 18px; }
.wordmark { display: flex; flex-direction: column; text-decoration: none; color: var(--ink); line-height: 1.1; }
.wordmark-name { font-family: var(--serif); font-weight: 400; font-size: 1.5rem; letter-spacing: 0.01em; }
.wordmark-place { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); margin-top: 4px; }

.langs { display: flex; gap: 2px; border: 1px solid var(--line); border-radius: 999px; padding: 3px; background: var(--card); }
.langs button {
  border: 0; background: transparent; cursor: pointer;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.06em;
  min-width: 38px; min-height: 32px; padding: 0 8px; border-radius: 999px; color: var(--ink-2);
}
.langs button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.langs button:hover:not([aria-pressed="true"]) { color: var(--ink); }

/* Abertura */
.hero { padding: clamp(48px, 9vw, 104px) 0 clamp(40px, 7vw, 80px); border-bottom: 1px solid var(--line); }
.hero-inner { max-width: 860px; }
.kicker {
  margin: 0 0 18px;
  font-size: 0.76rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--wine); font-weight: 600;
}
.kicker::before { content: ""; display: inline-block; width: 28px; height: 1px; background: var(--gold); vertical-align: middle; margin-right: 12px; }
h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.1rem, 5vw, 3.6rem); line-height: 1.08; letter-spacing: -0.015em;
  margin: 0 0 22px; text-wrap: balance;
}
.lede { font-size: clamp(1.02rem, 1.5vw, 1.14rem); color: var(--ink-2); max-width: 640px; margin: 0 0 32px; text-wrap: pretty; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 0 28px; border-radius: 999px; border: 1px solid transparent;
  font-weight: 700; font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; cursor: pointer; text-decoration: none;
  transition: background-color .2s ease, transform .2s ease;
}
.btn-primary { background: var(--wine); color: #fff; }
.btn-primary:hover { background: var(--wine-2); }
.btn-primary:active { transform: scale(0.98); }

.try { margin-top: 40px; }
.try-label { margin: 0 0 12px; font-size: 0.8rem; color: var(--ink-3); letter-spacing: 0.04em; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.chips button {
  border: 1px solid var(--line); background: var(--card); border-radius: 999px;
  padding: 10px 16px; font-size: 0.92rem; color: var(--ink); cursor: pointer; text-align: left; line-height: 1.35;
  transition: border-color .2s ease, background-color .2s ease;
}
.chips button:hover { border-color: var(--wine); background: #fff; }

/* O que a demo mostra */
.caps { padding: clamp(48px, 8vw, 88px) 0; }
.caps h2, .about h2 { font-family: var(--serif); font-weight: 400; font-style: italic; font-size: clamp(1.7rem, 3vw, 2.25rem); margin: 0 0 28px; }
.caps-grid {
  list-style: none; margin: 0; padding: 0; counter-reset: cap;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.caps-grid li {
  counter-increment: cap; padding: 26px 24px 28px 0; border-bottom: 1px solid var(--line);
}
.caps-grid li:not(:nth-child(3n + 1)) { padding-left: 24px; border-left: 1px solid var(--line); }
.caps-grid li::before {
  content: counter(cap, decimal-leading-zero); display: block; font-family: var(--serif); font-style: italic;
  color: var(--gold); font-size: 1.1rem; margin-bottom: 8px;
}
.caps-grid h3 { margin: 0 0 6px; font-size: 1rem; font-weight: 600; }
.caps-grid p { margin: 0; color: var(--ink-2); font-size: 0.94rem; }

.about { background: var(--paper-2); padding: clamp(44px, 7vw, 72px) 0; }
.about-inner { max-width: 760px; }
.about p { color: var(--ink-2); margin: 0 0 18px; }
.link-arrow { font-weight: 600; text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 2px; }

.foot { padding: 32px 0 calc(32px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.foot-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-size: 0.8rem; color: var(--ink-3); }
.foot-inner p { margin: 0; max-width: 680px; }
.foot-by { white-space: nowrap; }

@media (max-width: 860px) {
  .caps-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .caps-grid li:not(:nth-child(3n + 1)) { padding-left: 0; border-left: 0; }
  .caps-grid li:nth-child(2n) { padding-left: 20px; border-left: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .ribbon { font-size: 0.72rem; padding: 7px 14px; }
  .wordmark-name { font-size: 1.3rem; }
  .wordmark-place { font-size: 0.64rem; letter-spacing: 0.1em; }
  .langs button { min-width: 34px; padding: 0 6px; }
  .caps-grid { grid-template-columns: 1fr; }
  .caps-grid li:nth-child(2n) { padding-left: 0; border-left: 0; }
  .hero-actions .btn { width: 100%; }
  .chips button { width: 100%; }
  /* Espaço para o botão do chat não tapar o rodapé. */
  .foot { padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}