/* ===========================================================
   CYNC Software House — landing page
   Direction: editorial quente. Impresso técnico em papel off-white.
   =========================================================== */

:root{
  --paper:        #F7F3EC;
  --paper-raised: #FFFDF9;
  --paper-sunken: #EFE9DC;
  --ink:          #171717;
  --ink-strong:   rgba(23,23,23,0.62);
  --ink-soft:     rgba(23,23,23,0.45);
  --line:         rgba(23,23,23,0.09);
  --orange:       #FF5A1F;
  --terracotta:   #B9360B;
  --orange-soft:  #FF9A66;
  --orange-wash:  #FFE3D6;

  --paper-strong: rgba(247,243,236,0.62);
  --paper-soft:   rgba(247,243,236,0.45);
  --paper-line:   rgba(247,243,236,0.16);

  --font-display: "Clash Display", "Arial Black", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --shadow-warm: 0 20px 44px -34px rgba(70,40,20,0.4);
  --radius-btn: 5px;
  --radius-card: 10px;

  --max: 1180px;
  --edge: clamp(20px, 5vw, 64px);

  color-scheme: light;
}

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

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

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0313rem;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3{ margin: 0; text-wrap: balance; font-family: var(--font-display); }
p{ margin: 0; }
ul, ol, dl{ margin: 0; padding: 0; list-style: none; }
a{ color: inherit; text-decoration: none; }
img, svg{ display: block; max-width: 100%; }
button{ font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.wrap{ max-width: var(--max); margin-inline: auto; padding-inline: var(--edge); }

.sprite-defs{ position: absolute; width: 0; height: 0; }

a:focus-visible,
button:focus-visible,
.hero-symbol:focus-visible{
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.625rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9375rem;
  white-space: nowrap;
  border-radius: var(--radius-btn);
  transition: background-color 0.15s ease, transform 0.1s ease;
}
.btn:active{ transform: scale(0.97); }

.btn-primary{ background: var(--orange); color: var(--paper); }
.btn-primary:hover{ background: var(--terracotta); }

.link-secondary{
  display: inline-flex;
  align-items: center;
  margin-top: 0.75rem;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--terracotta);
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}
.section-dark .link-secondary{ color: var(--orange-soft); }

/* ---------- nav ---------- */
.nav{
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(247,243,236,0.74);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 rgba(23,23,23,0.07);
}
@media (prefers-reduced-transparency: reduce){
  .nav{ background: var(--paper); backdrop-filter: none; -webkit-backdrop-filter: none; }
}
.nav .wrap{
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 2.5rem;
  padding-block: 1rem;
}
.brand{ display: flex; align-items: center; gap: 0.625rem; color: var(--ink); }
.brand .mark{ width: 26px; height: 26px; color: var(--orange); flex-shrink: 0; }
.brand-word{ font-family: var(--font-display); font-weight: 700; font-size: 1.125rem; }

.nav-links{ display: flex; align-items: center; gap: 1.75rem; }
.nav-links a{
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-strong);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-links a:hover{ color: var(--ink); border-color: var(--orange); }
.nav-link-cta{ display: none; }

.nav-cta{ display: flex; align-items: center; gap: 1.125rem; margin-left: auto; }

.nav-toggle{
  display: none;
  width: 38px; height: 38px;
  align-items: center; justify-content: center;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
}
.nav-toggle svg{ width: 16px; height: 16px; }

@media (max-width: 860px){
  .nav-links{
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    background: var(--paper);
    box-shadow: 0 1px 0 rgba(23,23,23,0.07);
    padding: 0.5rem var(--edge) 1.25rem;
  }
  .nav-links.is-open{ display: flex; }
  .nav-links a{ padding-block: 0.625rem; width: 100%; }
  .nav-toggle{ display: inline-flex; }
  .nav-cta .btn-primary{ display: none; }
  .nav-links .nav-link-cta{
    display: block;
    margin-top: 0.375rem;
    color: var(--terracotta);
    font-weight: 700;
  }
}

/* ---------- hero ---------- */
.hero{ padding-block: clamp(2.5rem, 7vw, 5rem) clamp(3rem, 7vw, 5.5rem); }
.hero-grid{
  display: grid;
  grid-template-columns: minmax(0,1.3fr) minmax(240px, 0.9fr);
  gap: clamp(2rem, 6vw, 4.5rem);
  align-items: center;
}
.hero-title{
  font-weight: 700;
  font-size: clamp(2.4rem, 1.7rem + 3.6vw, 4.625rem);
  line-height: 1.02;
  letter-spacing: -0.038em;
  word-spacing: 0.22em;
}
.lede{
  margin-top: 1.5rem;
  max-width: 42ch;
  font-weight: 400;
  font-size: clamp(1.05rem, 1rem + 0.25vw, 1.21875rem);
  line-height: 1.58;
  color: var(--ink-strong);
}
.hero-actions{ margin-top: 2rem; display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; }

.hero-visual{ display: flex; flex-direction: column; align-items: center; gap: 1.25rem; }
.graph{ position: relative; width: 100%; max-width: 420px; aspect-ratio: 1; }
.hero-symbol{ width: 100%; height: 100%; }

.edge-accent .ea{ opacity: 0; transition: opacity 0.25s ease; }
.node circle{
  transition: transform 0.2s cubic-bezier(0.4,0,0.2,1);
  transform-origin: center;
  transform-box: fill-box;
}

/* graph interaction: hover a node, highlight it plus its connected neighbors */
@media (prefers-reduced-motion: no-preference){
  .edge-base .e{ opacity: 0; animation: edge-in 0.4s ease forwards; }
  .e-40{ animation-delay: 0.02s; }
  .e-01{ animation-delay: 0.08s; }
  .e-23{ animation-delay: 0.14s; }
  .e-34{ animation-delay: 0.2s; }

  .node circle{ opacity: 0; transform: scale(0.5); animation: node-in 0.42s cubic-bezier(0.16,1,0.3,1) forwards; }
  .n0 circle{ animation-delay: 0.24s; }
  .n1 circle{ animation-delay: 0.32s; }
  .n2 circle{ animation-delay: 0.4s; }
  .n3 circle{ animation-delay: 0.48s; }
  .n4 circle{ animation-delay: 0.56s; }
}
@keyframes edge-in{ from{ opacity: 0; } to{ opacity: 1; } }
@keyframes node-in{ from{ opacity: 0; transform: scale(0.5); } to{ opacity: 1; transform: scale(1); } }

.graph:has(.n0:hover) .n0 circle{ transform: scale(1.18); }
.graph:has(.n0:hover) .n1 circle,
.graph:has(.n0:hover) .n4 circle{ transform: scale(1.08); }
.graph:has(.n0:hover) .ea-01,
.graph:has(.n0:hover) .ea-40{ opacity: 1; }

.graph:has(.n1:hover) .n1 circle{ transform: scale(1.18); }
.graph:has(.n1:hover) .n0 circle{ transform: scale(1.08); }
.graph:has(.n1:hover) .ea-01{ opacity: 1; }

.graph:has(.n2:hover) .n2 circle{ transform: scale(1.18); }
.graph:has(.n2:hover) .n3 circle{ transform: scale(1.08); }
.graph:has(.n2:hover) .ea-23{ opacity: 1; }

.graph:has(.n3:hover) .n3 circle{ transform: scale(1.18); }
.graph:has(.n3:hover) .n2 circle,
.graph:has(.n3:hover) .n4 circle{ transform: scale(1.08); }
.graph:has(.n3:hover) .ea-23,
.graph:has(.n3:hover) .ea-34{ opacity: 1; }

.graph:has(.n4:hover) .n4 circle{ transform: scale(1.18); }
.graph:has(.n4:hover) .n3 circle,
.graph:has(.n4:hover) .n0 circle{ transform: scale(1.08); }
.graph:has(.n4:hover) .ea-34,
.graph:has(.n4:hover) .ea-40{ opacity: 1; }

@media (max-width: 760px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-visual{ order: -1; }
  .graph{ max-width: 300px; }
}

/* ---------- sections ---------- */
.section{ padding-block: clamp(3rem, 8vw, 5.5rem); }
.section-dark{ background: var(--ink); color: var(--paper); }
.section-sunken{ background: var(--paper-sunken); }

.section-title{
  font-weight: 700;
  font-size: clamp(1.65rem, 1.4rem + 1.6vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  word-spacing: 0.2em;
}
.section-dark .section-title{ color: var(--paper); }

.body-text{
  margin-top: 1.125rem;
  max-width: 60ch;
  color: var(--ink-strong);
  font-size: 1.03125rem;
  line-height: 1.62;
}
.body-text.on-dark{ color: var(--paper-strong); }

/* ---------- demo: assistente ---------- */
.demo-grid{
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(300px, 0.95fr);
  gap: clamp(2rem, 6vw, 4.5rem);
  align-items: center;
}
.phone-wrap{ display: flex; flex-direction: column; align-items: center; gap: 0.875rem; }
.phone-frame{
  width: min(340px, 100%);
  background: #0B0B0B;
  border-radius: 38px;
  padding: 0.75rem;
  box-shadow: var(--shadow-warm);
}
.phone-screen{
  background: #E5DDD5;
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 620px;
}
.phone-header{
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 0.875rem;
  background: #075E54;
  flex-shrink: 0;
}
.phone-back{ width: 22px; height: 22px; color: #FFFFFF; flex-shrink: 0; }
.phone-avatar{ width: 34px; height: 34px; padding: 4px; border-radius: 50%; background: var(--paper); color: var(--orange); flex-shrink: 0; }
.phone-header-text{ display: flex; flex-direction: column; gap: 1px; color: var(--paper); flex: 1; min-width: 0; }
.phone-name{ font-size: 0.9375rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.phone-status{ font-size: 0.75rem; color: rgba(255,255,255,0.75); }
.phone-header-icons{ display: flex; align-items: center; gap: 0.875rem; color: #FFFFFF; flex-shrink: 0; }
.phone-header-icons svg{ width: 20px; height: 20px; }

.phone-body{
  flex: 1;
  padding: 0.875rem 0.625rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  overflow-y: auto;
  scroll-behavior: smooth;
  scrollbar-width: none;
  background-image: radial-gradient(rgba(0,0,0,0.04) 1px, transparent 1px);
  background-size: 14px 14px;
}
.phone-body::-webkit-scrollbar{ display: none; }
@media (prefers-reduced-motion: reduce){
  .phone-body{ scroll-behavior: auto; }
}
.bubble{
  position: relative;
  max-width: 82%;
  padding: 0.5rem 0.625rem;
  border-radius: 7px;
  font-size: 0.9375rem;
  line-height: 1.42;
  box-shadow: 0 1px 1px rgba(0,0,0,0.15);
}
.bubble-in{ align-self: flex-start; background: #FFFFFF; color: #111B21; border-top-left-radius: 0; }
.bubble-out{ align-self: flex-end; background: #DCF8C6; color: #111B21; border-top-right-radius: 0; }
.bubble-time{
  display: inline-flex;
  align-items: center;
  gap: 3px;
  float: right;
  margin: 0.25rem 0 -0.125rem 0.5rem;
  font-size: 0.625rem;
  color: rgba(17,27,33,0.45);
}
.bubble-out .ticks{ width: 14px; height: 10px; color: #53BDEB; }

.bubble{ transition: opacity 0.3s ease, transform 0.3s ease; }
.bubble.is-hidden{ opacity: 0; transform: translateY(8px); }

.bubble-typing{
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.6875rem 0.75rem;
}
.bubble-typing span{
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(17,27,33,0.35);
  animation: typing-dot 1s infinite ease-in-out;
}
.bubble-typing span:nth-child(2){ animation-delay: 0.15s; }
.bubble-typing span:nth-child(3){ animation-delay: 0.3s; }
@keyframes typing-dot{
  0%, 60%, 100%{ transform: translateY(0); opacity: 0.4; }
  30%{ transform: translateY(-3px); opacity: 1; }
}
@media (prefers-reduced-motion: reduce){
  .bubble-typing span{ animation: none; opacity: 0.7; }
}

.phone-input{
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.625rem;
  background: #F0F0F0;
}
.input-pill{
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #FFFFFF;
  color: rgba(17,27,33,0.4);
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
}
.input-pill svg{ width: 22px; height: 22px; flex-shrink: 0; }
.input-pill span{ flex: 1; font-size: 0.875rem; }
.input-pill .cam-icon{ color: rgba(17,27,33,0.55); }
.mic-btn{
  flex-shrink: 0;
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: #075E54;
  color: #FFFFFF;
}
.mic-btn svg{ width: 20px; height: 20px; }

.demo-caption{
  font-size: 0.75rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--paper-soft);
}

@media (max-width: 760px){
  .demo-grid{ grid-template-columns: 1fr; }
}

/* ---------- landing pages demo ---------- */
.landing-grid{
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(300px, 0.95fr);
  gap: clamp(2rem, 6vw, 4.5rem);
  align-items: center;
}
.browser-wrap{ display: flex; flex-direction: column; align-items: center; gap: 0.875rem; }
.browser-frame{
  width: 100%;
  max-width: 460px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-warm);
}
.browser-bar{
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.75rem;
  background: var(--paper-sunken);
  border-bottom: 1px solid var(--line);
}
.browser-dot{ width: 9px; height: 9px; border-radius: 50%; background: var(--ink-soft); opacity: 0.35; }
.browser-url{
  margin-left: 0.5rem;
  padding: 0.25rem 0.75rem;
  background: var(--paper);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--ink-soft);
  flex: 1;
}
.browser-screen{ padding: 1.5rem 1.25rem 2rem; }
.mock-nav{
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.75rem;
}
.mock-logo{ width: 22px; height: 22px; border-radius: 50%; background: var(--orange); flex-shrink: 0; }
.mock-link{ width: 44px; height: 8px; border-radius: 4px; background: var(--line); }
.mock-cta-small{ margin-left: auto; width: 64px; height: 20px; border-radius: 999px; background: var(--orange-wash); flex-shrink: 0; }
.mock-hero{ display: flex; flex-direction: column; gap: 0.75rem; }
.mock-line{ display: block; height: 14px; border-radius: 4px; background: var(--line); }
.mock-line-lg{ width: 85%; height: 20px; }
.mock-line-md{ width: 70%; }
.mock-line-sm{ width: 55%; margin-bottom: 0.5rem; }
.mock-cta{ margin-top: 0.75rem; width: 132px; height: 34px; border-radius: var(--radius-btn); background: var(--orange); }

@media (max-width: 760px){
  .landing-grid{ grid-template-columns: 1fr; }
}

/* ---------- perfis ---------- */
.perfis-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: 2rem;
  max-width: 900px;
}
.perfil h3{
  font-weight: 600;
  font-size: clamp(1.15rem, 1.05rem + 0.4vw, 1.4375rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}
.perfil p{ color: var(--ink-strong); font-size: 1rem; line-height: 1.6; max-width: 42ch; }

/* ---------- processo: timeline echoing the graph ---------- */
.timeline{
  margin-top: 2.75rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.5rem, 3vw, 2rem);
}
.tl-step{ position: relative; padding-top: 1.5rem; }
.tl-step::before{
  content: "";
  position: absolute;
  top: 4px; left: 5px; right: -1.5rem;
  height: 2px;
  background: var(--line);
}
.tl-step:last-child::before{ display: none; }
.tl-dot{
  position: absolute;
  top: 0; left: 0;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--orange);
}
.tl-num{
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 1.5rem + 1.6vw, 2.75rem);
  color: var(--ink-soft);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.tl-step h3{ font-weight: 600; font-size: 1.1875rem; letter-spacing: -0.02em; margin-bottom: 0.5rem; }
.tl-step p{ color: var(--ink-strong); font-size: 0.9375rem; line-height: 1.6; }

@media (max-width: 760px){
  .timeline{ grid-template-columns: 1fr; gap: 1.75rem; }
  .tl-step{ padding-top: 0; padding-left: 1.5rem; }
  .tl-step::before{ top: 4px; bottom: -1.75rem; left: 4px; right: auto; width: 2px; height: auto; }
  .tl-dot{ top: 0; left: 0; }
}

/* ---------- planos ---------- */
.plans-grid{
  margin-top: 2.75rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.25rem, 3vw, 1.75rem);
  align-items: stretch;
}
.plan-card{
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.75rem;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}
.plan-card-featured{ border-color: var(--orange); box-shadow: var(--shadow-warm); }
.plan-badge{
  position: absolute;
  top: -0.75rem;
  left: 1.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: var(--orange);
  color: var(--paper);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.plan-name{ font-weight: 600; font-size: 1.25rem; letter-spacing: -0.02em; }
.plan-price{ margin-top: 0.5rem; font-size: 0.9375rem; color: var(--ink-strong); }
.plan-desc{ flex: 1; color: var(--ink-strong); font-size: 0.9375rem; line-height: 1.6; }
.plan-cta{ align-self: flex-start; }

@media (max-width: 900px){
  .plans-grid{ grid-template-columns: 1fr; }
  .plan-card-featured{ order: -1; }
}

/* ---------- footer ---------- */
.footer{ background: var(--ink); color: var(--paper); padding-block: clamp(3.5rem, 8vw, 6rem) 1.75rem; }
.footer .wrap{ max-width: var(--max); }
.footer-grid{
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(300px, 0.85fr);
  gap: clamp(2.5rem, 6vw, 4.5rem);
  align-items: start;
}
.footer-title{
  font-weight: 700;
  font-size: clamp(2.1rem, 1.6rem + 3vw, 3.875rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  word-spacing: 0.2em;
}
.footer-lede{ margin-top: 1rem; max-width: 46ch; color: var(--paper-strong); font-size: 1.0625rem; line-height: 1.6; }

.footer-contact{ margin-top: 2.25rem; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-contact p{ font-size: 0.9375rem; color: var(--paper-strong); }
.footer-contact a{ font-weight: 700; color: var(--paper); border-bottom: 1px solid var(--paper-line); }
.contact-label{ display: inline-block; min-width: 5.5rem; color: var(--paper-soft); }
.placeholder-value{ font-weight: 700; color: var(--orange-soft); }

.contact-form{
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
  background: rgba(247,243,236,0.04);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-card);
  padding: 1.75rem;
}
.form-row{ display: flex; flex-direction: column; gap: 0.375rem; }
.contact-form .form-row[hidden],
.contact-form button[hidden]{ display: none; }
.form-row label{ font-size: 0.8125rem; font-weight: 600; color: var(--paper-soft); }
.form-row input,
.form-row select,
.form-row textarea{
  font: inherit;
  font-size: 0.9375rem;
  color: var(--paper);
  background: rgba(247,243,236,0.06);
  border: 1px solid var(--paper-line);
  border-radius: 6px;
  padding: 0.625rem 0.75rem;
  outline: none;
  transition: border-color 0.15s ease;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{ border-color: var(--orange); }
.form-row textarea{ resize: vertical; min-height: 90px; }
.contact-form .btn{ align-self: flex-start; margin-top: 0.25rem; }
.contact-form .btn:disabled{ opacity: 0.6; cursor: default; }
.form-status{ font-size: 0.9375rem; color: var(--paper-strong); }

@media (max-width: 800px){
  .footer-grid{ grid-template-columns: 1fr; }
}

.footer-bottom{
  margin-top: clamp(3rem, 7vw, 5rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--paper-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.footer-brand{ display: flex; align-items: center; gap: 0.625rem; }
.footer-brand .mark{ width: 22px; height: 22px; color: var(--orange); }
.footer-brand span{ font-family: var(--font-display); font-weight: 700; font-size: 0.9375rem; }
@media (max-width: 600px){
  .footer-bottom{ flex-direction: column; align-items: flex-start; gap: 1.25rem; }
  .footer{ padding-bottom: calc(54px + 2.5rem); }
}

/* ---------- whatsapp fab ---------- */
.whatsapp-fab{
  position: fixed;
  right: clamp(1.25rem, 4vw, 2rem);
  bottom: clamp(1.25rem, 4vw, 2rem);
  z-index: 50;
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #25D366;
  color: #FFFFFF;
  box-shadow: var(--shadow-warm);
  transition: transform 0.1s ease, background-color 0.15s ease;
}
.whatsapp-fab svg{ width: 26px; height: 26px; }
.whatsapp-fab:hover{ background: #1FB855; }
.whatsapp-fab:active{ transform: scale(0.94); }

@media (prefers-reduced-motion: reduce){
  * { animation: none !important; }
  [data-reveal]{ opacity: 1; transform: none; transition: opacity 200ms ease; }
}