/* ============================================================
   Proa — site institucional
   HTML/CSS puro, zero dependências. Identidade náutica sóbria:
   carta náutica (curvas batimétricas), linha-d'água, proa.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  color-scheme: light dark;

  --bg: #f6f3ec;
  --bg-raised: #fdfcf8;
  --bg-dip: #efeadd;
  --ink: #16293c;
  --ink-soft: #43586c;
  --ink-faint: #5d7082;
  --accent: #0d6a61;
  --accent-ink: #0a5750;
  --accent-contrast: #f2fffc;
  --brass: #8a5c17;
  --line: rgba(22, 41, 60, 0.15);
  --line-strong: rgba(22, 41, 60, 0.28);
  --chart-alpha: 0.5;
  --shadow:
    0 1px 2px rgba(22, 41, 60, 0.06),
    0 14px 34px -18px rgba(22, 41, 60, 0.22);

  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino,
    "Book Antiqua", "URW Palladio L", Georgia, serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1520;
    --bg-raised: #111f2d;
    --bg-dip: #081019;
    --ink: #e6edf3;
    --ink-soft: #aab9c7;
    --ink-faint: #8497a9;
    --accent: #3fc4b5;
    --accent-ink: #63d3c6;
    --accent-contrast: #062018;
    --brass: #d2a458;
    --line: rgba(230, 237, 243, 0.16);
    --line-strong: rgba(230, 237, 243, 0.32);
    --chart-alpha: 0.38;
    --shadow:
      0 1px 2px rgba(0, 0, 0, 0.45),
      0 18px 42px -22px rgba(0, 0, 0, 0.65);
  }
}

/* ---------- Reset básico ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent-ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--accent);
  color: var(--accent-contrast);
}

/* ---------- Utilitários ---------- */
.container {
  width: min(100% - 2.5rem, 68rem);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.6rem 1rem;
  border-radius: 0.4rem;
  font-weight: 600;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 1rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Tipografia ---------- */
h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.3rem, 5.4vw, 3.7rem);
}

h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
}

h3 {
  font-size: 1.28rem;
}

p {
  margin: 0 0 1em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin: 0 0 1.1rem;
}

.lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 42rem;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-block: 1.05rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 1.85rem;
  height: 1.85rem;
  flex: none;
}

.brand-word {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 3vw, 1.8rem);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.site-nav a.nav-cta {
  color: var(--accent-contrast);
  background: var(--accent);
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-weight: 600;
}

.site-nav a.nav-cta:hover {
  text-decoration: none;
  filter: brightness(1.08);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 85% 0%, var(--bg-raised) 0%, transparent 55%),
    var(--bg);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(4rem, 9vw, 7.5rem) clamp(3.5rem, 8vw, 6.5rem);
  max-width: 44rem;
}

.hero-chart {
  position: absolute;
  z-index: 0;
  top: 50%;
  right: clamp(-14rem, -12vw, -4rem);
  transform: translateY(-50%);
  width: clamp(22rem, 46vw, 42rem);
  height: auto;
  color: var(--ink);
  opacity: var(--chart-alpha);
  pointer-events: none;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.4rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  background: var(--bg-raised);
  margin-bottom: 1.6rem;
}

.hero-status::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--brass);
  flex: none;
}

.hero .lede {
  font-size: clamp(1.08rem, 2vw, 1.24rem);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 2.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.6rem;
  border-radius: 0.55rem;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  filter: brightness(1.08);
}

.btn-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--ink-soft);
  background: var(--bg-raised);
}

.hero-trust {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--ink-faint);
  max-width: 34rem;
  margin: 0;
}

.hero-trust svg {
  width: 1.1rem;
  height: 1.1rem;
  flex: none;
  margin-top: 0.15rem;
  color: var(--accent-ink);
}

/* ---------- Seções ---------- */
.section {
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.section-alt {
  background: var(--bg-dip);
  border-block: 1px solid var(--line);
}

.section-head {
  margin-bottom: clamp(2.2rem, 5vw, 3.2rem);
  max-width: 46rem;
}

.wave-divider {
  display: flex;
  justify-content: center;
  color: var(--accent-ink);
  opacity: 0.65;
  margin-block: 0.5rem;
}

.wave-divider svg {
  width: 7rem;
  height: 0.8rem;
}

/* ---------- Capacidades (cards) ---------- */
.cap-grid {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .cap-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

.cap-card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 1.7rem 1.6rem 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cap-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cap-icon {
  width: 2.4rem;
  height: 2.4rem;
  color: var(--accent-ink);
  flex: none;
}

.cap-index {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
}

.cap-card h3 {
  margin: 0;
}

.cap-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

/* ---------- Como funciona (passos) ---------- */
.steps {
  list-style: none;
  counter-reset: passo;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.4rem;
}

@media (min-width: 820px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.6rem;
  }
}

.steps li {
  counter-increment: passo;
  position: relative;
  padding: 1.6rem 1.5rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--bg-raised);
}

.steps li::before {
  content: counter(passo, decimal-leading-zero);
  display: inline-block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1;
  color: var(--brass);
  margin-bottom: 0.8rem;
}

.steps h3 {
  font-size: 1.18rem;
  margin-bottom: 0.35em;
}

.steps p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

/* ---------- Contato ---------- */
.contact-card {
  max-width: 44rem;
  margin-inline: auto;
  text-align: center;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  box-shadow: var(--shadow);
  padding: clamp(2.2rem, 6vw, 3.5rem) clamp(1.4rem, 5vw, 3rem);
}

.contact-card .wave-divider {
  margin-bottom: 1.4rem;
}

.contact-card .lede {
  margin-inline: auto;
  margin-bottom: 1.8rem;
}

.contact-mail {
  margin-top: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--ink-faint);
}

/* ---------- Rodapé ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-dip);
  padding-block: 2.6rem 2.8rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--ink);
}

.footer-brand svg {
  width: 1.5rem;
  height: 1.5rem;
}

.footer-nav {
  display: flex;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.footer-nav a:hover {
  color: var(--ink);
}

.footer-legal {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
  line-height: 1.7;
}

.footer-legal a {
  color: inherit;
}

/* ---------- Páginas legais ---------- */
.doc {
  max-width: 46rem;
  padding-block: clamp(3rem, 7vw, 5rem) clamp(3.5rem, 8vw, 5.5rem);
}

.doc-head {
  margin-bottom: 2.6rem;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid var(--line);
}

.doc-meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin: 0 0 1rem;
}

.doc-langs {
  font-size: 0.92rem;
  color: var(--ink-faint);
}

.doc-langs a {
  font-weight: 600;
}

.doc-body h2 {
  font-size: 1.45rem;
  margin-top: 2.4rem;
}

.doc-body h3 {
  font-size: 1.18rem;
  margin-top: 2rem;
}

.doc-body p,
.doc-body li {
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.doc-body ul {
  padding-left: 1.3rem;
  margin: 0 0 1em;
}

.doc-body li {
  margin-bottom: 0.4em;
}

.doc-body strong {
  color: var(--ink);
}

.doc .wave-divider {
  margin-block: 3rem;
}

/* ---------- Animação de entrada (sutil) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero-inner > * {
    animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both;
  }

  .hero-inner > *:nth-child(2) { animation-delay: 0.07s; }
  .hero-inner > *:nth-child(3) { animation-delay: 0.14s; }
  .hero-inner > *:nth-child(4) { animation-delay: 0.21s; }
  .hero-inner > *:nth-child(5) { animation-delay: 0.28s; }

  @keyframes rise {
    from {
      opacity: 0;
      transform: translateY(14px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}