/* ==========================================================================
   ELMNTRX TECHNOLOGIES: Stylesheet
   Design tokens live at the top. Edit these to re-theme the whole site.
   ========================================================================== */

:root {
  /* ---- Color tokens ---- */
  --bg:            #0A0E17;   /* base canvas, near-black navy */
  --bg-alt:        #0E1626;   /* panel / alt-section background */
  --bg-raised:     #121D33;   /* card surfaces */
  --line:          rgba(163, 189, 224, 0.14);
  --line-strong:   rgba(163, 189, 224, 0.28);

  --ink:           #EEF3F9;   /* primary text on dark */
  --ink-dim:       #B9C6DA;   /* secondary text on dark */
  --muted:         #7C8AA3;   /* tertiary / caption text */

  --brand-deep:    #0F2C56;   /* deep blue, from mark */
  --brand-mid:     #1C5E96;   /* mid blue */
  --brand-steel:   #3E7CB1;   /* steel blue */
  --accent:        #2FD8E0;   /* electric cyan, mark tip */
  --accent-2:      #57E6C9;   /* teal-green, mark gradient end */
  --accent-ink:    #04171A;   /* text placed on accent fills */

  --grad-brand: linear-gradient(135deg, var(--brand-deep) 0%, var(--brand-mid) 45%, var(--accent) 100%);
  --grad-accent: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);

  /* ---- Type tokens ---- */
  --font-display: 'Chakra Petch', 'Rajdhani', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  /* ---- Scale ---- */
  --container: 1180px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- Reset ---- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.08;
  color: var(--ink);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  margin-top: 14px;
}
.section-head p {
  margin-top: 16px;
  color: var(--ink-dim);
  font-size: 17px;
  max-width: 56ch;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center p { margin-left: auto; margin-right: auto; }
.section-head.center .eyebrow { justify-content: center; }

section { position: relative; padding: 108px 0; }
.section-tight { padding: 84px 0; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 0 rgba(47,216,224,0.0);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -8px rgba(47,216,224,0.45);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-arrow { transition: transform 0.3s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---- Header ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  background: rgba(10, 14, 23, 0.55);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease), padding 0.4s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  padding: 12px 0;
  background: rgba(10, 14, 23, 0.86);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark { width: 30px; height: auto; flex-shrink: 0; }
.brand-word {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.brand-word b {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink);
}
.brand-word span {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.28em;
  color: var(--muted);
  margin-top: 3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  font-size: 14.5px;
  color: var(--ink-dim);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover::after { width: 100%; }

.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  width: 42px; height: 38px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}
.nav-toggle span {
  width: 18px; height: 1.5px;
  background: var(--ink);
  display: block;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle.is-active span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ---- Hero ---- */
.hero {
  position: relative;
  padding: 200px 0 140px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.9;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 55% at 18% 30%, rgba(47,216,224,0.10), transparent 60%),
              linear-gradient(180deg, rgba(10,14,23,0.15) 0%, var(--bg) 92%);
}
.hero .container { position: relative; z-index: 1; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-title {
  font-size: clamp(38px, 5.4vw, 68px);
  margin-top: 22px;
  max-width: 15ch;
}
.hero-title .grad {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  margin-top: 24px;
  font-size: 18px;
  color: var(--ink-dim);
  max-width: 46ch;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.hero-tags {
  display: flex;
  gap: 10px;
  margin-top: 46px;
  flex-wrap: wrap;
}
.hero-tags span {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 13px;
}

/* Hero graphic: the mark itself, floating with ambient glow */
.hero-graphic {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-logo {
  width: 62%;
  height: auto;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.5));
  animation: float 6s var(--ease) infinite;
}
@media (prefers-reduced-motion: reduce) { .hero-logo { animation: none; } }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}
.hero-glow {
  position: absolute;
  inset: 6%;
  background: radial-gradient(circle, rgba(47,216,224,0.22), transparent 68%);
  filter: blur(26px);
  z-index: 0;
}

/* ---- Marquee strip ---- */
.strip {
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 20px 0;
}
.strip .container {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.strip span {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}
.strip .dot { color: var(--accent); }

/* ---- Periodic element cards (Services) ---- */
.elements-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.element-card {
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px 24px 24px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.element-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-accent);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  z-index: 0;
}
.element-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 24px 48px -24px rgba(0,0,0,0.55);
}
.element-card > * { position: relative; z-index: 1; }

.element-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  font-family: var(--font-mono);
}
.element-num { font-size: 12px; color: var(--muted); }
.element-cat { font-size: 12px; color: var(--accent); letter-spacing: 0.06em; }

.element-symbol {
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 14px;
  line-height: 1;
}
.element-name {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.element-desc {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--ink-dim);
}
.element-tags {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.element-tags span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 9px;
}

/* ---- Process (Innovate / Integrate / Elevate) ---- */
.process {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.process-step {
  padding: 40px 34px;
  position: relative;
  border-right: 1px solid var(--line);
}
.process-step:last-child { border-right: none; }
.process-step .step-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.14em;
}
.process-step h3 {
  font-size: 24px;
  margin-top: 16px;
}
.process-step p {
  margin-top: 14px;
  color: var(--ink-dim);
  font-size: 15px;
}
.process-step .step-arrow {
  position: absolute;
  right: -13px; top: 44px;
  width: 26px; height: 26px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  color: var(--accent);
}
.process-step:last-child .step-arrow { display: none; }

/* ---- Why / pillars ---- */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.pillar {
  background: var(--bg);
  padding: 32px 26px;
}
.pillar svg { width: 26px; height: 26px; color: var(--accent); }
.pillar h4 {
  margin-top: 18px;
  font-size: 16.5px;
}
.pillar p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--ink-dim);
}

/* ---- Industries ---- */
.industry-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.industry-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--ink-dim);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}
.industry-item:hover { border-color: var(--accent); color: var(--ink); }
.industry-item .idx { color: var(--accent); }

/* ---- Seal / about panel ---- */
.about-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}
.about-mark {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  max-width: 380px;
  margin: 0 auto;
}
.about-canvas {
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 1;
}
.about-glow {
  position: absolute;
  inset: 8%;
  background: radial-gradient(circle, rgba(47,216,224,0.18), transparent 65%);
  filter: blur(22px);
  z-index: 0;
}
.about-caption {
  position: absolute;
  bottom: 2%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.about-copy p { color: var(--ink-dim); font-size: 16px; margin-top: 16px; max-width: 54ch; }
.about-copy .eyebrow { margin-bottom: 4px; }
.about-list { margin-top: 26px; display: grid; gap: 12px; }
.about-list li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 15px; color: var(--ink-dim);
}
.about-list li svg { flex-shrink: 0; margin-top: 3px; width: 16px; height: 16px; color: var(--accent); }

/* ---- CTA band ---- */
.cta-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(28,94,150,0.14), rgba(47,216,224,0.06));
  position: relative;
  overflow: hidden;
}
.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  padding: 60px 28px;
}
.cta-band h2 { font-size: clamp(24px, 3.4vw, 34px); max-width: 20ch; }
.cta-band-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}
.contact-info dl {
  display: grid;
  gap: 22px;
  margin-top: 32px;
}
.contact-info dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-info dd {
  margin-top: 6px;
  font-size: 16px;
  color: var(--ink);
}
.contact-info dd a:hover { color: var(--accent); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-grid .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.field input, .field select, .field textarea {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14.5px;
  transition: border-color 0.25s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent);
  outline: none;
}
.field textarea { resize: vertical; min-height: 110px; }
.form-note { margin-top: 16px; font-size: 13px; color: var(--muted); }

/* Honeypot field: present in the DOM for bots to fill in, invisible and
   unreachable for real visitors (off-screen, not display:none, since some
   bots skip display:none fields when deciding what to fill in). */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.form-status[data-state="success"] { color: var(--accent-2); }
.form-status[data-state="error"] { color: #ef7b7b; }
.form-status[data-state="sending"] { color: var(--muted); }

.btn[disabled] { opacity: 0.6; pointer-events: none; }

/* ---- Footer ---- */
.site-footer {
  padding: 64px 0 32px;
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}
.footer-bg {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  z-index: 0;
}
.footer-bg img { width: 100%; height: 100%; object-fit: cover; }
.site-footer .container { position: relative; z-index: 1; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}
.footer-brand p { margin-top: 16px; color: var(--muted); font-size: 14px; max-width: 32ch; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.footer-col ul { display: grid; gap: 11px; }
.footer-col a { font-size: 14.5px; color: var(--ink-dim); transition: color 0.25s var(--ease); }
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 13px; color: var(--muted); }
.footer-social { display: flex; gap: 14px; }
.footer-social a {
  width: 36px; height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-dim);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }
.footer-social svg { width: 16px; height: 16px; }

/* ---- Reveal-on-scroll ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-graphic { max-width: 340px; margin: 0 auto; order: -1; }
  .about-panel { grid-template-columns: 1fr; }
  .about-mark { max-width: 280px; margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .elements-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr; }
  .process-step { border-right: none; border-bottom: 1px solid var(--line); }
  .process-step:last-child { border-bottom: none; }
  .process-step .step-arrow { display: none; }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .industry-list { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .site-header.is-open .nav-links {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: rgba(10,14,23,0.98);
    border-bottom: 1px solid var(--line);
    padding: 18px 28px 26px;
  }
  .site-header.is-open .nav-links a { padding: 10px 0; width: 100%; }
  .hero { padding: 150px 0 90px; }
  .elements-grid { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .industry-list { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .cta-band .container { flex-direction: column; align-items: flex-start; }
  section { padding: 76px 0; }
}

/* ---- WhatsApp bubble ---- */
.whatsapp-bubble {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 95;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 28px -6px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255,255,255,0.08);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.whatsapp-bubble img { width: 68%; height: 68%; position: relative; z-index: 1; }
.whatsapp-bubble:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 16px 34px -6px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255,255,255,0.1);
}
.whatsapp-bubble:active { transform: translateY(-1px) scale(0.98); }

.whatsapp-ping {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.45;
  animation: whatsapp-ping 2.6s cubic-bezier(0, 0, 0.2, 1) infinite;
}
@keyframes whatsapp-ping {
  0%   { transform: scale(1);   opacity: 0.4; }
  70%  { transform: scale(1.9); opacity: 0; }
  100% { transform: scale(1.9); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .whatsapp-ping { animation: none; display: none; }
}

@media (max-width: 720px) {
  .whatsapp-bubble { right: 16px; bottom: 16px; width: 52px; height: 52px; }
}