/* ============================================================
   UNIDTEC — design tokens
   Direção: prancha de engenharia / planta técnica.
   Software sob encomenda = projeto desenhado sob medida.
   ============================================================ */
:root {
  --navy: #12293F;
  --navy-2: #1B3A56;
  --navy-3: #234A6B;
  --paper: #F6F4EC;
  --paper-2: #EFEBDD;
  --grid-on-navy: rgba(143, 173, 199, 0.16);
  --grid-on-paper: rgba(18, 41, 63, 0.09);
  --amber: #FF7A33;
  --amber-dark: #E85D19;
  --line-blue: #4C82AE;
  --graphite: #1F242B;
  --graphite-soft: #4A5560;
  --chalk: #EAEFF5;
  --chalk-soft: #8FADC7;

  --mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-w: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--sans);
  color: var(--graphite);
  background: var(--paper);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 600;
}

h1, h2, h3 {
  font-family: var(--mono);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

h2 { font-size: clamp(26px, 3.4vw, 38px); }
h3 { font-size: 18px; }

p { color: var(--graphite-soft); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.3px;
  padding: 14px 24px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

.btn-primary {
  background: var(--amber);
  color: var(--navy);
}
.btn-primary:hover { background: var(--amber-dark); }

.btn-ghost {
  background: transparent;
  border-color: rgba(234, 239, 245, 0.35);
  color: var(--chalk);
}
.btn-ghost:hover { border-color: var(--chalk); }

.btn-ghost-dark {
  background: transparent;
  border-color: rgba(18, 41, 63, 0.3);
  color: var(--navy);
}
.btn-ghost-dark:hover { border-color: var(--navy); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(18, 41, 63, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(143, 173, 199, 0.2);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.site-header .logo-lockup { width: 168px; }
.nav-links {
  display: flex;
  gap: 32px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.5px;
  color: var(--chalk-soft);
}
.nav-links a:hover { color: var(--chalk); }
.nav-cta { display: flex; align-items: center; gap: 20px; }

@media (max-width: 780px) {
  .nav-links { display: none; }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: var(--navy);
  overflow: hidden;
  padding: 88px 0 0;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-on-navy) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-on-navy) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black 0%, black 60%, transparent 100%);
  pointer-events: none;
}
.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding-bottom: 60px;
}
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
}

.hero-copy .eyebrow { color: var(--amber); margin-bottom: 18px; }
.hero-copy h1 {
  color: var(--chalk);
  font-size: clamp(32px, 4.6vw, 52px);
  margin-bottom: 20px;
}
.hero-copy h1 span { color: var(--amber); }
.hero-copy p {
  color: var(--chalk-soft);
  font-size: 17px;
  max-width: 46ch;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }

.dim-note {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--chalk-soft);
  border-top: 1px dashed rgba(143, 173, 199, 0.35);
  padding-top: 14px;
  max-width: 46ch;
}

/* ---------- blueprint diagram (signature element) ---------- */
.diagram {
  position: relative;
  border: 1px solid rgba(143, 173, 199, 0.35);
  background: rgba(27, 58, 86, 0.35);
  padding: 26px;
  min-height: 360px;
}
.diagram-label {
  position: absolute;
  top: -1px; left: -1px;
  background: var(--amber);
  color: var(--navy);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 5px 10px;
}
.diagram svg { width: 100%; height: auto; }
.diagram-caption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--chalk-soft);
  text-align: right;
  margin-top: 10px;
  letter-spacing: 0.5px;
}

.node-box { fill: rgba(246, 244, 236, 0.04); stroke: var(--line-blue); stroke-width: 1.2; }
.node-box.accent { stroke: var(--amber); }
.node-text {
  font-family: var(--mono);
  font-size: 10.5px;
  fill: var(--chalk);
}
.node-text.dim { fill: var(--chalk-soft); font-size: 9px; }
.flow-line {
  stroke: var(--line-blue);
  stroke-width: 1.2;
  fill: none;
  stroke-dasharray: 4 3;
  stroke-dashoffset: 200;
  animation: draw 2.6s ease forwards;
}
.flow-line.delay1 { animation-delay: 0.3s; }
.flow-line.delay2 { animation-delay: 0.6s; }
.flow-line.delay3 { animation-delay: 0.9s; }
@keyframes draw { to { stroke-dashoffset: 0; } }

/* ---------- title block / trust strip ---------- */
.title-block {
  background: var(--navy-2);
  border-top: 1px solid rgba(143, 173, 199, 0.25);
  border-bottom: 1px solid rgba(143, 173, 199, 0.25);
}
.title-block .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 32px;
  padding: 16px 28px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--chalk-soft);
  letter-spacing: 0.4px;
}
.title-block strong { color: var(--chalk); font-weight: 600; }

/* ---------- sections (paper) ---------- */
section.on-paper { padding: 96px 0; position: relative; }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-head .eyebrow { color: var(--amber-dark); margin-bottom: 14px; }
.section-head p { margin-top: 14px; font-size: 16px; }

/* services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--grid-on-paper);
  border: 1px solid var(--grid-on-paper);
}
@media (max-width: 720px) { .services-grid { grid-template-columns: 1fr; } }
.service-panel {
  background: var(--paper);
  padding: 34px 32px;
  position: relative;
}
.service-panel .mark {
  width: 34px; height: 34px;
  border: 1.5px solid var(--amber-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-family: var(--mono);
  font-weight: 700;
  color: var(--amber-dark);
  font-size: 14px;
}
.service-panel h3 { margin-bottom: 10px; color: var(--navy); }
.service-panel p { font-size: 14.5px; }

/* process */
.process-strip {
  background: var(--navy);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.process-strip .hero-grid-bg { mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%); }
.process-strip .section-head .eyebrow { color: var(--amber); }
.process-strip .section-head h2, .process-strip .section-head p { color: var(--chalk); }
.process-strip .section-head p { color: var(--chalk-soft); }

.phases {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .phases { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .phases { grid-template-columns: 1fr; } }

.phase {
  border-top: 2px solid var(--amber);
  padding-top: 18px;
}
.phase .phase-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--chalk-soft);
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.phase h3 { color: var(--chalk); margin-bottom: 8px; }
.phase p { font-size: 14px; color: var(--chalk-soft); }

/* why us */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 820px) { .why-grid { grid-template-columns: 1fr; } }
.why-item { border-left: 2px solid var(--line-blue); padding-left: 20px; }
.why-item h3 { color: var(--navy); margin-bottom: 8px; }
.why-item p { font-size: 14.5px; }

/* contact */
.contact-section {
  background: var(--paper-2);
  padding: 96px 0;
  border-top: 1px solid var(--grid-on-paper);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info h2 { color: var(--navy); margin-bottom: 16px; }
.contact-info p { margin-bottom: 28px; font-size: 15.5px; }
.contact-channels { display: flex; flex-direction: column; gap: 14px; }
.contact-channel {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--navy);
  border: 1px solid var(--grid-on-paper);
  background: var(--paper);
  padding: 14px 18px;
  transition: border-color 0.15s ease;
}
.contact-channel:hover { border-color: var(--line-blue); }
.contact-channel .tag {
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--chalk-soft);
  background: var(--navy);
  padding: 3px 7px;
}

.contact-form {
  background: var(--paper);
  border: 1px solid var(--grid-on-paper);
  padding: 32px;
}
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--graphite-soft);
  margin-bottom: 8px;
}
.form-row input, .form-row textarea {
  width: 100%;
  border: 1px solid rgba(18, 41, 63, 0.25);
  background: var(--paper);
  padding: 12px 14px;
  font-family: var(--sans);
  font-size: 14.5px;
  color: var(--graphite);
}
.form-row input:focus, .form-row textarea:focus {
  outline: 2px solid var(--amber);
  outline-offset: 1px;
  border-color: var(--amber);
}
.form-row textarea { resize: vertical; min-height: 100px; }
.form-note { font-size: 12.5px; color: var(--graphite-soft); margin-top: 10px; }

/* footer */
.site-footer {
  background: var(--navy);
  padding: 56px 0 28px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(143, 173, 199, 0.2);
  margin-bottom: 24px;
}
.footer-top .logo-lockup { width: 168px; margin-bottom: 12px; }
.footer-links { display: flex; gap: 28px; font-family: var(--mono); font-size: 13px; color: var(--chalk-soft); }
.footer-links a:hover { color: var(--chalk); }
.footer-legal {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--chalk-soft);
  line-height: 1.7;
}