/* PRN Tech — site styles
   Palette: near-white ground, deep navy ink, emerald accent.
   Both themes via prefers-color-scheme; tokens only, no per-theme components. */

:root {
  --ground: #FAFBFC;
  --panel: #F1F3F6;
  --ink: #0C2036;
  --muted: #52627A;
  --line: #E1E5EB;
  --accent: #0E7A55;
  --accent-ink: #FFFFFF;
  --accent-soft: #EAF3EF;
  --navy: #0C2036;
  --navy-ink: #F4F7FA;
  --navy-muted: #9FB0C4;
  --serif: Georgia, "Times New Roman", "Iowan Old Style", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0B1524;
    --panel: #101C2E;
    --ink: #ECF0F4;
    --muted: #94A3B8;
    --line: #223044;
    --accent: #3FBF8F;
    --accent-ink: #08131F;
    --accent-soft: rgba(18, 40, 49, 0.33);
    --navy: #08101C;
    --navy-ink: #ECF0F4;
    --navy-muted: #8DA0B8;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.7;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

/* ---------- header ---------- */
header.site {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--ground) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; gap: 12px 20px; }
.wordmark { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.wordmark:hover { text-decoration: none; }
.mark {
  width: 34px; height: 34px; background: var(--navy); color: var(--navy-ink);
  display: grid; place-items: center; font-family: var(--serif);
  font-size: 16px; font-style: italic; border-radius: 2px;
  border: 1px solid var(--line);
}
.wm-text { font-weight: 600; letter-spacing: 0.22em; font-size: 14px; }
.wm-text small { display: block; font-weight: 400; letter-spacing: 0.08em; font-size: 10.5px; color: var(--muted); }
.bar-right { display: flex; align-items: center; gap: 20px; }
.navlink { font-weight: 600; font-size: 14px; color: var(--muted); }
.navlink:hover { color: var(--ink); text-decoration: none; }
.lang-toggle { display: flex; border: 1px solid var(--line); border-radius: 2px; overflow: hidden; }
.lang-toggle a {
  font-size: 12px; letter-spacing: 0.1em; font-weight: 600;
  padding: 6px 12px; color: var(--muted);
}
.lang-toggle a:hover { text-decoration: none; color: var(--ink); }
.lang-toggle a[aria-current="true"] { background: var(--ink); color: var(--ground); }
.cta {
  font-weight: 600; font-size: 14px; letter-spacing: 0.02em;
  background: var(--accent); color: var(--accent-ink) !important;
  padding: 10px 20px; border-radius: 2px;
}
.cta:hover { text-decoration: none; filter: brightness(1.07); }
.cta-short { display: none; } /* shown only on narrow screens (see phone breakpoint) */

/* floating language switch — hidden on desktop, shown on phones (replaces the header toggle) */
.lang-fab {
  display: none;
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  z-index: 50;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--ground) !important;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  border: 1px solid color-mix(in srgb, var(--ground) 22%, transparent);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.28);
}
.lang-fab:hover { text-decoration: none; }
.lang-fab svg { display: block; }

/* ---------- hero ---------- */
.hero { padding-top: 108px; padding-bottom: 96px; }
.kicker {
  font-size: 12.5px; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent); margin: 0 0 26px;
}
h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(38px, 5.8vw, 66px); line-height: 1.12;
  letter-spacing: -0.012em; margin: 0 0 26px; max-width: 21ch; text-wrap: balance;
}
h1 em { font-style: italic; color: var(--accent); }
.sub { max-width: 60ch; color: var(--muted); font-size: 19px; margin: 0 0 40px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta-lg {
  font-weight: 600; font-size: 15.5px; background: var(--accent);
  color: var(--accent-ink) !important; padding: 15px 30px; border-radius: 2px;
}
.cta-lg:hover { text-decoration: none; filter: brightness(1.07); }
.cta-ghost {
  font-weight: 600; font-size: 15.5px; color: var(--ink) !important;
  border: 1px solid var(--line); padding: 14px 30px; border-radius: 2px;
}
.cta-ghost:hover { text-decoration: none; border-color: var(--muted); }

/* ---------- principles strip ---------- */
.principles {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.principles .wrap {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; padding: 44px 28px;
}
.principle h2 { font-family: var(--serif); font-weight: 400; font-size: 20px; margin: 0 0 8px; letter-spacing: 0; }
.principle p { margin: 0; color: var(--muted); font-size: 15.5px; max-width: 34ch; }
.principle .num {
  font-family: var(--serif); font-style: italic; color: var(--accent);
  font-size: 15px; display: block; margin-bottom: 10px;
}

/* ---------- sections ---------- */
section { padding: 96px 0 8px; }
.sec-head { max-width: 720px; margin-bottom: 56px; }
.sec-label {
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 14px;
}
.sec-title {
  font-family: var(--serif); font-weight: 400; font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 16px; text-wrap: balance;
}
.sec-intro { color: var(--muted); margin: 0; max-width: 58ch; }

/* services */
.services { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.service { border-bottom: 1px solid var(--line); padding: 40px 36px 44px 0; }
.service + .service { border-left: 1px solid var(--line); padding-left: 36px; }
.service h3 { font-family: var(--serif); font-weight: 400; font-size: 23px; margin: 0 0 14px; }
.service p { margin: 0 0 18px; color: var(--muted); font-size: 15.5px; }
.service ul { margin: 0; padding: 0; list-style: none; }
.service li { font-size: 14px; color: var(--muted); padding: 7px 0; border-top: 1px solid var(--line); }
.service li::before { content: "—"; color: var(--accent); margin-right: 10px; }

/* capabilities */
.caps { border-top: 1px solid var(--line); }
.cap-row {
  display: grid; grid-template-columns: 280px 1fr; gap: 32px;
  padding: 26px 0; border-bottom: 1px solid var(--line); align-items: baseline;
}
.cap-row .cap-name { font-family: var(--serif); font-size: 19px; }
.cap-row .cap-list { color: var(--muted); font-size: 15.5px; }
.cap-row .cap-list b { color: var(--ink); font-weight: 600; }

/* case studies — navy band */
.band { background: var(--navy); color: var(--navy-ink); margin-top: 96px; padding: 96px 0 88px; }
.band .sec-label { color: #7FD3AE; }
.band .sec-title { color: var(--navy-ink); }
.band .sec-intro { color: var(--navy-muted); }
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 56px; }
.case {
  background: color-mix(in srgb, var(--navy-ink) 5%, transparent);
  border: 1px solid color-mix(in srgb, var(--navy-ink) 14%, transparent);
  border-radius: 3px; padding: 32px 30px;
  display: flex; flex-direction: column; gap: 14px;
}
.case .tag {
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.18em;
  text-transform: uppercase; color: #7FD3AE;
}
.case h3 { font-family: var(--serif); font-weight: 400; font-size: 21px; margin: 0; line-height: 1.35; color: var(--navy-ink); }
.case p { margin: 0; color: var(--navy-muted); font-size: 15px; flex-grow: 1; }
.case .result {
  border-top: 1px solid color-mix(in srgb, var(--navy-ink) 14%, transparent);
  padding-top: 14px; font-size: 14.5px; color: var(--navy-ink);
}
.band .refs { margin-top: 44px; color: var(--navy-muted); font-size: 14.5px; font-style: italic; font-family: var(--serif); }
.band a { color: #7FD3AE; }

/* products */
.product {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  border: 1px solid var(--line); border-radius: 3px; overflow: hidden;
}
.product .p-left { padding: 48px 0 48px 44px; }
.product .p-right {
  background: var(--accent-soft); padding: 48px 44px;
  display: flex; flex-direction: column; justify-content: center; gap: 10px;
}
.status {
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 2px;
  display: inline-block; padding: 4px 12px; margin-bottom: 20px;
}
.product h3 { font-family: var(--serif); font-weight: 400; font-size: 26px; margin: 0 0 12px; max-width: 18ch; }
.product p { color: var(--muted); margin: 0; max-width: 48ch; }
.p-right .fact { font-size: 15px; color: var(--muted); border-bottom: 1px solid var(--line); padding: 10px 0; }
.p-right .fact b {
  color: var(--ink); font-weight: 600; display: block; font-size: 13px;
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 2px;
}

/* contact */
.contact { margin-top: 96px; border-top: 1px solid var(--line); padding-top: 96px; padding-bottom: 80px; }
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; align-items: start; }
.contact-mail {
  font-family: var(--serif); font-size: clamp(20px, 3vw, 30px);
  display: inline-block; margin: 22px 0 10px; color: var(--ink) !important;
  border-bottom: 2px solid var(--accent); padding-bottom: 4px;
}
.contact-mail:hover { text-decoration: none; color: var(--accent) !important; }
.contact .note { color: var(--muted); font-size: 15px; }
.contact-side { border-left: 1px solid var(--line); padding-left: 40px; font-size: 15px; color: var(--muted); }
.contact-side b {
  color: var(--ink); font-weight: 600; display: block; font-size: 12.5px;
  letter-spacing: 0.16em; text-transform: uppercase; margin: 18px 0 4px;
}
.contact-side b:first-child { margin-top: 0; }

footer.site { border-top: 1px solid var(--line); padding: 30px 0 44px; font-size: 13px; color: var(--muted); }
footer.site .frow { display: flex; flex-wrap: wrap; gap: 8px 30px; justify-content: space-between; }
footer.site .cnpj { font-family: var(--mono); font-size: 12px; }

@media (max-width: 900px) {
  .principles .wrap { grid-template-columns: 1fr; gap: 28px; }
  .services { grid-template-columns: 1fr; }
  .service + .service { border-left: 0; padding-left: 0; }
  .service { padding-right: 0; }
  .cases { grid-template-columns: 1fr; }
  .cap-row { grid-template-columns: 1fr; gap: 6px; }
  .product { grid-template-columns: 1fr; }
  .product .p-left { padding: 40px 32px 8px; }
  .product .p-right { padding: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-side { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 32px; }
  .hero { padding-top: 72px; padding-bottom: 64px; }
}

/* ---------- phones ---------- */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .wrap { padding: 0 32px; }   /* generous phone gutter — wider than the 28px desktop base */

  /* header: compact single row, wraps gracefully if it must */
  .bar { flex-wrap: wrap; gap: 12px 14px; padding-top: 14px; padding-bottom: 14px; }
  .wm-text small { display: none; }   /* drop subtitle */
  .navlink { display: none; }         /* Blog stays reachable via the contact section */
  .bar-right { gap: 12px; }
  .lang-toggle { display: none; }   /* replaced by the floating language button */
  .lang-fab { display: inline-flex; }
  .cta { padding: 9px 15px; font-size: 13px; }
  .cta-full { display: none; }
  .cta-short { display: inline; }

  /* hero */
  .hero { padding-top: 52px; padding-bottom: 52px; }
  h1 { font-size: clamp(30px, 8.5vw, 40px); }
  .sub { font-size: 17px; }
  .kicker { margin-bottom: 20px; }
  .hero-actions { gap: 12px; }
  .cta-lg, .cta-ghost { padding: 13px 22px; font-size: 15px; }

  /* section rhythm: tighten the generous desktop spacing */
  section { padding: 60px 0 8px; }
  .sec-head { margin-bottom: 38px; }
  .principles .wrap { padding: 36px 32px; gap: 30px; }
  .band { margin-top: 60px; padding: 60px 0 56px; }
  .band .cases { margin-top: 40px; }
  .case { padding: 26px 22px; }
  .product .p-left { padding: 32px 22px 4px; }
  .product .p-right { padding: 24px 22px; }
  .contact { margin-top: 60px; padding-top: 60px; padding-bottom: 52px; }
  .contact-grid { gap: 40px; }
  footer.site { padding-bottom: 84px; }   /* clear the floating language button */
}