/* =========================================================================
   SyntheticMind — landing page
   Tokens copiados do design system "SyntheticMind" (tokens.json).
   Ao mudar uma cor ou medida lá, atualize aqui.
   ========================================================================= */
:root {
  --brand-navy: #0f172a;
  --brand-cyan: #22d3ee;
  --brand-white: #ffffff;

  --bg: #ffffff;
  --surface: #f8fafc;
  --surface-raised: #ffffff;
  --border: #e2e8f0;
  --border-strong: #64748b;
  --text: #0f172a;
  --text-muted: #475569;
  --text-on-brand: #ffffff;
  --text-on-brand-muted: #cbd5e1;
  --accent: #0e7490;
  --accent-hover: #155e75;
  --on-accent: #ffffff;
  --accent-soft: #ecfeff;
  --accent-text: #0e7490;
  --focus: var(--accent);

  --font-sans: Sora, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-6: 24px;
  --space-8: 32px; --space-12: 48px; --space-16: 64px; --space-24: 96px; --space-32: 128px;

  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 16px; --radius-xl: 24px; --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 32px rgba(15, 23, 42, 0.08);

  --container-max: 1200px;
  --text-max: 680px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --surface: #0f172a;
    --surface-raised: #1e293b;
    --border: #334155;
    --border-strong: #64748b;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #22d3ee;
    --accent-hover: #67e8f9;
    --on-accent: #0f172a;
    --accent-soft: #083344;
    --accent-text: #67e8f9;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px rgba(0, 0, 0, 0.45);
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 26px;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent-text); }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
h1, h2, h3, p { margin: 0; }

.container { width: 100%; max-width: calc(var(--container-max) + 2 * var(--space-16)); margin: 0 auto; padding: 0 var(--space-16); }
@media (max-width: 720px) { .container { padding: 0 var(--space-4); } }

.skip-link { position: absolute; left: -9999px; top: var(--space-2); background: var(--surface-raised); padding: var(--space-2) var(--space-4); border-radius: var(--radius-md); z-index: 100; }
.skip-link:focus { left: var(--space-4); }

/* ---------- Tipografia ---------- */
.eyebrow { font-size: 12px; line-height: 16px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-text); }
.display { font-size: 64px; line-height: 68px; font-weight: 700; letter-spacing: -0.03em; }
.h1 { font-size: 36px; line-height: 44px; font-weight: 700; letter-spacing: -0.02em; }
.h3 { font-size: 20px; line-height: 28px; font-weight: 600; letter-spacing: -0.01em; }
.lead { font-size: 18px; line-height: 30px; color: var(--text-muted); max-width: var(--text-max); }
.muted { color: var(--text-muted); }
.dot { display: inline-block; width: .3em; height: .3em; border-radius: var(--radius-full); background: var(--brand-cyan); margin-left: .05em; }
@media (max-width: 960px) { .display { font-size: 48px; line-height: 54px; letter-spacing: -0.025em; } }
@media (max-width: 720px) {
  .display { font-size: 38px; line-height: 44px; }
  .h1 { font-size: 28px; line-height: 36px; }
}

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 44px; padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md); border: 1px solid transparent;
  font: 600 15px/20px var(--font-sans); text-decoration: none; cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-secondary { background: var(--surface-raised); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { border-color: var(--text); color: var(--text); }
.btn-on-brand { background: var(--brand-white); color: var(--brand-navy); }
.btn-on-brand:hover { background: var(--brand-cyan); color: var(--brand-navy); }
.btn-sm { min-height: 40px; padding: var(--space-2) var(--space-4); font-size: 14px; }

/* ---------- Topo ---------- */
.topbar { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid var(--border); }
@supports not (background: color-mix(in srgb, red 50%, blue)) { .topbar { background: var(--bg); } }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); min-height: 68px; }
.brand { display: inline-flex; align-items: center; }
.brand img { height: 26px; width: auto; }
.nav-links { display: flex; align-items: center; gap: var(--space-8); list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--text-muted); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
@media (max-width: 720px) { .nav-links { display: none; } }

/* ---------- Hero ---------- */
.hero { padding: var(--space-32) 0 var(--space-24); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--space-16); align-items: center; }
.hero-copy { display: flex; flex-direction: column; gap: var(--space-6); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-2); }
.hero-art { position: relative; aspect-ratio: 1 / 1; border-radius: var(--radius-xl); background: var(--brand-navy); overflow: hidden; }
.hero-art svg { width: 100%; height: 100%; }
/* No escuro o azul-marinho fica perto do fundo: a borda mantém o bloco visível. */
@media (prefers-color-scheme: dark) {
  .hero-art { box-shadow: inset 0 0 0 1px var(--border); }
  .band { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
}
@media (max-width: 960px) {
  .hero { padding: var(--space-16) 0 var(--space-12); }
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-12); }
  .hero-art { max-width: 420px; }
}

/* ---------- Seções ---------- */
.section { padding: var(--space-24) 0; }
.section-surface { background: var(--surface); }
.section-head { display: flex; flex-direction: column; gap: var(--space-4); margin-bottom: var(--space-12); }
@media (max-width: 720px) { .section { padding: var(--space-12) 0; } .section-head { margin-bottom: var(--space-8); } }

/* ---------- Produtos ---------- */
.products { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
@media (max-width: 860px) { .products { grid-template-columns: 1fr; } }
.card {
  display: flex; flex-direction: column; gap: var(--space-4);
  padding: var(--space-8); border-radius: var(--radius-lg);
  background: var(--surface-raised); border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  color: inherit; text-decoration: none;
  transition: box-shadow .15s ease, transform .15s ease;
}
a.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); color: inherit; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
.card-mark { width: 48px; height: 48px; border-radius: 11px; }
.card-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.card-list li { display: flex; gap: var(--space-3); color: var(--text-muted); }
.card-list li::before { content: ""; flex: 0 0 6px; height: 6px; margin-top: 10px; border-radius: var(--radius-full); background: var(--accent); }
.card-link { margin-top: auto; padding-top: var(--space-2); font-weight: 600; color: var(--accent-text); }
.card-soon { background: var(--surface); box-shadow: none; border-style: dashed; border-color: var(--border-strong); }
.badge { display: inline-flex; align-items: center; gap: var(--space-1); padding: 2px var(--space-2); border-radius: var(--radius-full); font-size: 12px; line-height: 18px; font-weight: 600; background: var(--accent-soft); color: var(--accent-text); }
.badge-neutral { background: var(--surface-raised); color: var(--text-muted); border: 1px solid var(--border); }

/* ---------- Princípios ---------- */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-12); list-style: none; margin: 0; padding: 0; }
@media (max-width: 860px) { .principles { grid-template-columns: 1fr; gap: var(--space-8); } }
.principle { display: flex; flex-direction: column; gap: var(--space-3); padding-top: var(--space-6); border-top: 1px solid var(--border); }
.principle-num { font-family: var(--font-mono); font-size: 14px; line-height: 22px; color: var(--accent-text); }

/* ---------- Faixa de marca ---------- */
.band { background: var(--brand-navy); color: var(--text-on-brand); padding: var(--space-24) 0; position: relative; overflow: hidden; }
.band-inner { position: relative; display: flex; flex-direction: column; gap: var(--space-6); max-width: 760px; }
.band .eyebrow { color: var(--brand-cyan); }
.band .lead { color: var(--text-on-brand-muted); }
.band-dots { position: absolute; right: 0; top: 50%; transform: translateY(-50%); width: 360px; height: 216px; opacity: .9; }
@media (max-width: 960px) { .band-dots { display: none; } }
@media (max-width: 720px) { .band { padding: var(--space-12) 0; } }

/* ---------- Contato ---------- */
.contact { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-8); align-items: center; padding: var(--space-12); border-radius: var(--radius-xl); background: var(--surface-raised); border: 1px solid var(--border); }
.contact-mail { font-family: var(--font-mono); font-size: 15px; }
@media (max-width: 720px) { .contact { grid-template-columns: 1fr; padding: var(--space-8) var(--space-6); } }

/* ---------- Rodapé ---------- */
.footer { background: var(--brand-navy); color: var(--text-on-brand-muted); padding: var(--space-16) 0 var(--space-8); font-size: 14px; line-height: 22px; }
.footer a { color: var(--text-on-brand); text-decoration: none; }
.footer a:hover { color: var(--brand-cyan); }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-12); }
.footer-brand { display: flex; flex-direction: column; gap: var(--space-4); max-width: 360px; }
.footer-brand img { height: 26px; width: auto; align-self: flex-start; }
.footer-cols { display: flex; flex-wrap: wrap; gap: var(--space-16); }
.footer-col { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-col h2 { font-size: 12px; line-height: 16px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--brand-cyan); margin-bottom: var(--space-2); }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.footer-legal { margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid #1e293b; display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6); }
.footer-legal [hidden] { display: none; }