/* ==========================================================================
   HDO Desenvolvimento — folha de estilo
   Tokens primeiro; componentes usam apenas tokens.
   ========================================================================== */

:root {
  /* Paleta */
  --petrol: #123f4f;
  --petrol-deep: #0b2a36;
  --amber: #f0a62b;
  --amber-deep: #c9841a;

  /* Tema claro (padrão) */
  --bg: #f3f6f6;
  --bg-elev: #ffffff;
  --bg-sunk: #e6edee;
  --ink: #10232a;
  --ink-2: #5e7378;
  --ink-3: #8a9ba0;
  --line: #d3dee0;
  --line-strong: #b7c7cb;
  --brand: var(--petrol);
  --brand-contrast: #ffffff;
  --accent: var(--amber);
  --accent-ink: #7a4d05;
  --accent-soft: #fbeccd;
  --focus: #1c7fa0;
  --shadow: 0 18px 40px -24px rgba(16, 35, 42, 0.35);

  /* Tipografia */
  --font-display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Hanken Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.5625rem;
  --step-3: 2rem;
  --step-4: 2.75rem;
  --step-5: clamp(2.4rem, 1.3rem + 3vw, 3.9rem);

  /* Layout */
  --container: 72rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section: clamp(4rem, 9vw, 7.5rem);
  --radius: 10px;
  --radius-lg: 18px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b181d;
    --bg-elev: #122730;
    --bg-sunk: #08131a;
    --ink: #e9f1f2;
    --ink-2: #a9bcc1;
    --ink-3: #7b9198;
    --line: #22383f;
    --line-strong: #325059;
    --brand: #e9f1f2;
    --brand-contrast: #0b181d;
    --accent: #f5b448;
    --accent-ink: #f5b448;
    --accent-soft: #2c2410;
    --focus: #6ec6e3;
    --shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.7);
  }
}

:root[data-theme="dark"] {
  --bg: #0b181d;
  --bg-elev: #122730;
  --bg-sunk: #08131a;
  --ink: #e9f1f2;
  --ink-2: #a9bcc1;
  --ink-3: #7b9198;
  --line: #22383f;
  --line-strong: #325059;
  --brand: #e9f1f2;
  --brand-contrast: #0b181d;
  --accent: #f5b448;
  --accent-ink: #f5b448;
  --accent-soft: #2c2410;
  --focus: #6ec6e3;
  --shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.7);
}

/* ---------- Base ---------- */
*,
*::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: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; }
p + p { margin-top: 1em; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--brand);
  color: var(--brand-contrast);
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  z-index: 100;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 1.4rem;
  height: 2px;
  background: var(--accent);
}

.lede {
  color: var(--ink-2);
  font-size: var(--step-1);
  max-width: 34em;
}

.section { padding-block: var(--section); }
.section + .section { border-top: 1px solid var(--line); }

.section-head {
  display: grid;
  gap: 1rem;
  max-width: 44rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section-head h2 { font-size: var(--step-4); }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--step-0);
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: var(--brand-contrast); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-accent { background: var(--accent); color: #10232a; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.brand svg { height: 2.6rem; width: auto; }
.brand .mark-leg { stroke: var(--brand); }
.brand .mark-ring { stroke: var(--accent); }
.brand .word-main { fill: var(--brand); }
.brand .word-sub { fill: var(--ink-2); }

.nav { display: flex; align-items: center; gap: 1.75rem; }
.nav a {
  text-decoration: none;
  font-weight: 500;
  color: var(--ink-2);
  transition: color 120ms ease;
}
.nav a:hover { color: var(--ink); }
.nav .btn { padding: 0.55rem 1.05rem; font-size: var(--step--1); color: var(--brand-contrast); }

.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(3rem, 7vw, 6rem) clamp(3.5rem, 8vw, 6rem);
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero-copy { display: grid; gap: 1.5rem; }
.hero h1 {
  font-size: var(--step-5);
  font-variation-settings: "opsz" 96, "wdth" 100;
  letter-spacing: -0.025em;
  max-width: 13.5em;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent-ink);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }
.hero-note {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-3);
}

/* Diagrama de integração */
.diagram {
  width: 100%;
  height: auto;
  font-family: var(--font-mono);
}
.diagram .node { fill: var(--bg-elev); stroke: var(--line-strong); stroke-width: 1.5; }
.diagram .node-title { fill: var(--ink); font-family: var(--font-body); font-weight: 600; font-size: 14px; }
.diagram .node-meta { fill: var(--ink-3); font-size: 10.5px; letter-spacing: 0.04em; }
.diagram .wire { stroke: var(--line-strong); stroke-width: 1.5; fill: none; }
.diagram .pulse {
  stroke: var(--accent);
  stroke-width: 2.5;
  fill: none;
  stroke-linecap: round;
  stroke-dasharray: 14 180;
  animation: pulse 3.2s linear infinite;
}
.diagram .pulse.d1 { animation-delay: -0.8s; }
.diagram .pulse.d2 { animation-delay: -1.6s; }
.diagram .pulse.d3 { animation-delay: -2.4s; }
.diagram .wire-label { fill: var(--ink-3); font-size: 10px; letter-spacing: 0.06em; }
.diagram .hub { fill: var(--petrol); }
.diagram .hub-leg { stroke: #ffffff; }
.diagram .hub-ring { stroke: var(--accent); }
.diagram .hub-halo { fill: none; stroke: var(--accent); stroke-opacity: 0.35; }

@keyframes pulse {
  from { stroke-dashoffset: 194; }
  to { stroke-dashoffset: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .diagram .pulse { animation: none; stroke-dasharray: none; stroke-opacity: 0.55; }
  .btn:hover { transform: none; }
}

/* ---------- Serviços ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.service {
  display: grid;
  align-content: start;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--line-strong);
  position: relative;
}
.service::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 3rem;
  height: 2px;
  background: var(--accent);
}
.service-icon {
  width: 2.75rem;
  height: 2.75rem;
  color: var(--brand);
}
.service h3 { font-size: var(--step-2); }
.service p { color: var(--ink-2); }
.service ul {
  margin: 0.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
  font-size: var(--step--1);
  color: var(--ink-2);
}
.service li {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
}
.service li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-2px);
}

/* ---------- Processo ---------- */
.process-wrap { background: var(--bg-sunk); }
.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
}
.process li {
  padding: 1.75rem 1.5rem 1.75rem 0;
  margin-right: 1.5rem;
  border-top: 1px solid var(--line-strong);
  display: grid;
  gap: 0.75rem;
  align-content: start;
}
.process li:last-child { margin-right: 0; }
.process .step-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-ink);
  letter-spacing: 0.1em;
}
.process h3 { font-size: var(--step-1); }
.process p { color: var(--ink-2); font-size: var(--step--1); }
.process .step-out {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-3);
  padding-top: 0.5rem;
  border-top: 1px dashed var(--line-strong);
}

/* ---------- Tecnologias ---------- */
.stack {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.stack-group { display: grid; gap: 0.9rem; align-content: start; }
.stack-group h3 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--bg-elev);
  color: var(--ink);
}

/* ---------- Sobre ---------- */
.about .container {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.about-copy { display: grid; gap: 1.25rem; }
.about-copy h2 { font-size: var(--step-4); }
.about-copy p { color: var(--ink-2); max-width: 32em; }
.principles {
  display: grid;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line-strong);
}
.principles li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}
.principles .p-icon { color: var(--accent-ink); }
.principles h3 { font-size: var(--step-1); margin-bottom: 0.3rem; }
.principles p { color: var(--ink-2); font-size: var(--step--1); }

/* ---------- Contato ---------- */
.contact {
  background: var(--petrol-deep);
  color: #e9f1f2;
}
.contact .container {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
.contact h2 { font-size: var(--step-4); }
.contact .eyebrow { color: var(--amber); }
.contact .eyebrow::before { background: var(--amber); }
.contact p { color: #b9cbd0; max-width: 30em; margin-top: 1rem; }
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(233, 241, 242, 0.18);
}
.contact-list li {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(233, 241, 242, 0.18);
  align-items: baseline;
}
.contact-list .label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8fa8ae;
}
.contact-list a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid rgba(240, 166, 43, 0.6);
}
.contact-list a:hover { border-bottom-color: var(--amber); }
.contact .btn-accent { margin-top: 1.75rem; }

/* ---------- Rodapé ---------- */
.site-footer {
  background: var(--bg-sunk);
  border-top: 1px solid var(--line);
  padding-block: 2.5rem;
  font-size: var(--step--1);
  color: var(--ink-2);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.site-footer .brand svg { height: 2.2rem; }
.footer-meta { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-3); }

/* ---------- Responsivo ---------- */
@media (max-width: 64rem) {
  .services, .stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process li:nth-child(2) { margin-right: 0; }
}

@media (max-width: 52rem) {
  .hero .container,
  .about .container,
  .contact .container { grid-template-columns: 1fr; }
  .hero h1 { max-width: none; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1rem;
    display: none;
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { padding: 0.75rem 0; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 0.75rem; justify-content: center; border-bottom: none; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 36rem) {
  .services, .stack, .process { grid-template-columns: 1fr; }
  .process li { margin-right: 0; }
  .contact-list li { grid-template-columns: 1fr; gap: 0.25rem; }
}