/* ==========================================================
   TrackTech — style.css
   ========================================================== */

/* Tokens */
:root {
  --navy:       #1B326C;
  --navy-deep:  #11224C;
  --cyan:       #00ACEC;
  --purple:     #802A8B;
  --green:      #96C14E;
  --green-text: #6E9134;
  --ink:        #1B2233;
  --muted:      #5A6275;
  --border:     #E3E7EE;
  --bg:         #FFFFFF;
  --bg-alt:     #F6F8FB;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, "Noto Sans", sans-serif,
          "Apple Color Emoji", "Segoe UI Emoji";
  --r-sm: 6px;
  --r:    12px;
  --shadow:    0 2px 16px rgba(27,50,108,0.07);
  --shadow-lg: 0 8px 40px rgba(27,50,108,0.13);
  --ease: 0.2s ease;
  --header-h: 116px;

  --bg-white:          #FFFFFF;
  --bg-soft:           #F6F8FB;
  --header-bg:         #FFFFFF;
  --card-bg:           #FFFFFF;
  --footer-bg:         #11224C;
  --btn-primary-bg:    #1B326C;
  --btn-primary-text:  #ffffff;
  --btn-primary-hover: #00ACEC;
  --heading-color:     #1B326C;
  --link-color:        #00ACEC;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--cyan); text-decoration: none; transition: color var(--ease); }
a:hover { color: var(--navy); }
ul { list-style: none; }
button { font-family: var(--font); }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.22; color: var(--heading-color, var(--navy)); }
h1 { font-size: clamp(1.9rem, 4.5vw, 3.1rem); }
h2 { font-size: clamp(1.45rem, 3vw, 2.1rem); }
h3 { font-size: clamp(1.05rem, 2vw, 1.25rem); }
h4 { font-size: 0.95rem; font-weight: 600; }

/* Layout */
.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-soft); }

/* Skip link */
.skip-link {
  position: absolute;
  top: -999px;
  left: 0;
  padding: 12px 24px;
  background: var(--navy);
  color: #fff;
  font-weight: 600;
  z-index: 10000;
  border-radius: 0 0 var(--r-sm) 0;
}
.skip-link:focus { top: 0; color: #fff; }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--header-bg, var(--bg-white));
  border-bottom: 1px solid var(--border);
  min-height: var(--header-h);
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 20px;
}
.logo-link { flex-shrink: 0; display: flex; align-items: center; }
.logo { height: 84px; width: auto; display: block; }
.primary-nav { margin-left: auto; }
.nav-list { display: flex; gap: 2px; align-items: center; }
.nav-list a {
  display: block;
  padding: 7px 14px;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--r-sm);
  transition: color var(--ease), background var(--ease);
}
.nav-list a:hover { color: var(--cyan); background: rgba(0,172,236,0.07); }
.nav-list a[aria-current="page"] { color: var(--cyan); font-weight: 600; }
.header-cta { flex-shrink: 0; margin-left: 8px; }

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 19px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: auto;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(8.5px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8.5px) rotate(-45deg); }

/* ── Mobile nav ── */
.mobile-nav {
  position: fixed;
  inset: 0;
  top: var(--header-h);
  background: var(--navy-deep);
  z-index: 199;
  padding: 24px 24px 48px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.mobile-nav.is-open {
  pointer-events: auto;
  opacity: 1;
  transform: translateY(0);
}
.mobile-nav ul { margin-bottom: 28px; }
.mobile-nav a {
  display: block;
  padding: 16px 0;
  color: rgba(255,255,255,0.8);
  font-size: 1.2rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: color var(--ease);
}
.mobile-nav a:hover,
.mobile-nav a[aria-current="page"] { color: var(--cyan); }

/* width-overflow fix: padding lives on the wrapper, not the button */
.mob-cta-wrap { padding: 0; }
.mob-cta-wrap .btn-primary {
  display: block;
  width: 100%;
  text-align: center;
  color: #fff !important; /* specificity override for .mobile-nav a rule above */
}

/* ── Footer ── */
.site-footer { background: var(--footer-bg, var(--navy-deep)); padding: 56px 0 0; }
.footer-top {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo {
  height: 60px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
  margin-bottom: 14px;
}
.footer-tagline { color: rgba(255,255,255,0.45); font-size: 0.88rem; line-height: 1.5; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-col h4 {
  color: #fff;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.55); font-size: 0.88rem; transition: color var(--ease); }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}
.footer-copy { margin-right: auto; }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { color: rgba(255,255,255,0.35); font-size: 0.82rem; transition: color var(--ease); }
.footer-legal a:hover { color: var(--cyan); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 26px;
  font-family: var(--font);
  font-size: 0.93rem;
  font-weight: 600;
  border-radius: var(--r-sm);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.btn-primary { background: var(--btn-primary-bg, var(--navy)); color: var(--btn-primary-text, #ffffff); border-color: var(--btn-primary-bg, var(--navy)); }
.btn-primary:hover { background: var(--btn-primary-hover, var(--navy-deep)); border-color: var(--btn-primary-hover, var(--navy-deep)); color: var(--btn-primary-text, #ffffff); }
.btn-outline { background: transparent; color: var(--navy); border-color: var(--border); }
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }

/* ── Labels & badges ── */
.kicker {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.badge-green { background: rgba(110,145,52,0.14); color: var(--green-text); }

/* ── Card grid ── */
.card-grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card-bg, var(--bg-white));
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--ease), transform var(--ease);
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.ic-cyan   { background: rgba(0,172,236,0.1);   color: var(--cyan); }
.ic-purple { background: rgba(128,42,139,0.1);  color: var(--purple); }
.ic-green  { background: rgba(110,145,52,0.12); color: var(--green-text); }
.ic-navy   { background: rgba(27,50,108,0.08);  color: var(--navy); }
.card h3 { margin-bottom: 10px; }
.card > p { color: var(--muted); margin-bottom: 20px; font-size: 0.95rem; }
.card-link {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.card-link:hover { color: var(--navy); }
.card-link::after { content: '→'; }

/* ── Value chips ── */
.value-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.chip {
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(27,50,108,0.06);
  color: var(--navy);
  border: 1px solid var(--border);
}
.chip-green { background: rgba(110,145,52,0.1); color: var(--green-text); border-color: rgba(110,145,52,0.25); }

/* ── Hero ── */
.hero {
  position: relative;
  padding: 96px 0 88px;
  overflow: hidden;
  background: var(--bg-white);
}
.hero .kicker { margin-bottom: 16px; }
.hero h1 { margin-bottom: 22px; max-width: 640px; }
.hero .lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

/* Brand wash — decorative reuse of the logo icon motif */
.brand-wash {
  position: absolute;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  pointer-events: none;
  opacity: 0.07;
}

/* ── Section heading block ── */
.section-head { margin-bottom: 40px; }
.section-head h2 { margin-top: 8px; }
.section-head p { color: var(--muted); margin-top: 12px; max-width: 600px; }

/* ── CTA banner ── */
.cta-band {
  background: var(--navy);
  padding: 72px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band h2 { color: #fff; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.68); margin-bottom: 28px; font-size: 1.05rem; }
.cta-band .btn-primary { background: var(--cyan); border-color: var(--cyan); }
.cta-band .btn-primary:hover { background: #fff; border-color: #fff; color: var(--navy); }

/* ── Value cards ── */
.value-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 28px;
  background: var(--card-bg, var(--bg-white));
  border: 1px solid var(--border);
  border-radius: var(--r);
  box-shadow: var(--shadow);
}
.val-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.value-card .val-body h3 { font-size: 1.02rem; margin-bottom: 6px; }
.value-card .val-body p { color: var(--muted); font-size: 0.9rem; margin-bottom: 0; }

/* ── Page hero (inner pages) ── */
.page-hero {
  background: var(--bg-soft);
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { margin-top: 10px; max-width: 680px; }
.page-hero p { color: var(--muted); margin-top: 16px; font-size: 1.05rem; max-width: 580px; }

/* ── Services page ── */
.svc-block {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.svc-block:last-of-type { border-bottom: none; }
.svc-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.tag-cyan   { background: rgba(0,172,236,0.1);  color: #0086BA; }
.tag-purple { background: rgba(128,42,139,0.1); color: var(--purple); }
.tag-green  { background: rgba(110,145,52,0.12); color: var(--green-text); }

.svc-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.svc-block h2 { margin-bottom: 14px; }
.svc-main p { color: var(--muted); }

.process { margin-top: 32px; display: flex; flex-direction: column; gap: 20px; }
.process-step { display: flex; gap: 16px; align-items: flex-start; }
.step-num {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--cyan);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  margin-top: 2px;
}
.step-body h4 { color: var(--navy); margin-bottom: 4px; }
.step-body p { color: var(--muted); font-size: 0.9rem; margin-bottom: 0; }

.svc-aside {
  background: var(--card-bg, var(--bg-soft));
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 28px;
}
.svc-aside h4 {
  color: var(--navy);
  margin-bottom: 14px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.svc-aside p { color: var(--muted); font-size: 0.92rem; margin-bottom: 0; }
.svc-aside ul { margin-top: 12px; }
.svc-aside li {
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}
.svc-aside li:last-child { border-bottom: none; }
.svc-aside li::before { content: '→\00a0'; color: var(--cyan); font-weight: 700; }

/* ── Products page ── */
.product-block {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.product-block:last-of-type { border-bottom: none; }
.prod-inner {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}
.product-block h2 { margin: 12px 0; }
.prod-desc { color: var(--muted); margin-bottom: 24px; }

.feature-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.feature-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.93rem;
}
.feat-check {
  flex-shrink: 0;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(0,172,236,0.1);
  display: flex; align-items: center; justify-content: center;
  margin-top: 1px;
  color: var(--cyan);
}
.good-fit {
  background: var(--card-bg, var(--bg-soft));
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}
.good-fit h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--navy);
  margin-bottom: 14px;
}
.good-fit li {
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.88rem;
}
.good-fit li:last-child { border-bottom: none; }
.good-fit li::before { content: '✓\00a0'; color: var(--green-text); font-weight: 700; }

.try-band {
  background: linear-gradient(135deg, var(--navy), var(--navy-deep));
  padding: 48px 0;
  text-align: center;
}
.try-band h3 { color: #fff; margin-bottom: 8px; font-size: 1.3rem; }
.try-band p { color: rgba(255,255,255,0.65); font-size: 0.95rem; }

/* ── About page ── */
.about-block { padding: 64px 0; border-bottom: 1px solid var(--border); }
.about-block:last-of-type { border-bottom: none; }
.about-block .inner { max-width: 700px; }
.about-block h2 { margin-bottom: 14px; }
.about-block p { color: var(--muted); }

/* ── Contact page ── */
.contact-section { padding: 72px 0; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}
.contact-info-card {
  background: var(--card-bg, var(--bg-soft));
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 32px;
}
.contact-info-card h3 { margin-bottom: 24px; }
.contact-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.contact-row:last-of-type { border-bottom: none; }
.contact-row-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(0,172,236,0.1);
  color: var(--cyan);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-row-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  display: block;
  margin-bottom: 3px;
}
.contact-placeholder { color: var(--muted); font-size: 0.9rem; font-style: italic; margin-bottom: 0; }
.pending-note {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(0,172,236,0.05);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 0.83rem;
  color: var(--muted);
}

.contact-form-card h3 { margin-bottom: 22px; }
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 7px;
}
.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 0.93rem;
  color: var(--ink);
  background: var(--card-bg, var(--bg-white));
  outline: none;
  transition: border-color var(--ease), box-shadow var(--ease);
  appearance: none;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,172,236,0.1);
}
.form-row textarea { resize: vertical; min-height: 130px; }
.form-note {
  margin-top: 14px;
  padding: 11px 15px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 0.82rem;
  color: var(--muted);
}
.field-hint {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: -0.5rem;
  margin-bottom: 1rem;
}

/* ── Responsive ── */
@media (max-width: 980px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .svc-inner { grid-template-columns: 1fr; gap: 32px; }
  .prod-inner { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .good-fit { position: static; }
}

@media (max-width: 860px) {
  .primary-nav, .header-cta { display: none; }
  .hamburger { display: flex; }
  .logo { height: 56px; }
  .site-header .header-inner { display: flex; align-items: center; justify-content: space-between; }
  .brand-wash { width: 300px; height: 300px; right: -50px; opacity: 0.05; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 48px; }
  .section { padding: 56px 0; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; text-align: center; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .brand-wash { display: none; }
  .svc-block, .product-block, .about-block { padding: 48px 0; }
  .contact-section { padding: 48px 0; }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ── Form status messages ── */
.form-status {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  line-height: 1.5;
  margin-top: 1.25rem;
}
.form-status[hidden] { display: none; }
.form-success { background: #f0f7e6; border: 1px solid #c3dfa0; color: #3d6b1a; }
.form-success svg { flex-shrink: 0; margin-top: 1px; }
.form-error { background: #fdf2f2; border: 1px solid #f5b7b1; color: #922b21; }
.form-error svg { flex-shrink: 0; margin-top: 1px; }

/* ── Field-level validation errors ── */
.field-error { display: block; font-size: 0.8125rem; color: #c0392b; margin-top: 0.35rem; }
.invalid { border-color: #c0392b !important; outline-color: #c0392b; }

/* ── Submit button loading state ── */
#submit-btn:disabled { opacity: 0.7; cursor: not-allowed; }
.btn-loading { display: none; }
#submit-btn.is-loading .btn-label  { display: none; }
#submit-btn.is-loading .btn-loading { display: inline; }

/* ── WhatsApp floating button ────────────────────────────────── */
.whatsapp-btn {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.whatsapp-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
  color: #ffffff;
}
.whatsapp-btn:focus-visible {
  outline: 3px solid #25D366;
  outline-offset: 3px;
}

/* Tooltip */
.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: #1A1A1A;
  color: #ffffff;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  padding: 0.35rem 0.75rem;
  border-radius: 5px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
}
.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: #1A1A1A;
}
.whatsapp-btn:hover .whatsapp-tooltip,
.whatsapp-btn:focus-visible .whatsapp-tooltip {
  opacity: 1;
}

/* Mobile — smaller button, no tooltip */
@media (max-width: 620px) {
  .whatsapp-btn {
    width: 50px;
    height: 50px;
    bottom: 1.25rem;
    right: 1.25rem;
  }
  .whatsapp-tooltip {
    display: none;
  }
}