/* ==================================================================
   ATTIRE IDENTITY — Stylesheet
   Design tokens: ink black / charcoal / graphite / paper / white
   Type: Manrope (display+body) / Space Mono (utility labels, tags)
   Signature motif: the stitched seam line — a dashed path that runs
   through the hero and final CTA, echoing garment construction.
================================================================== */

/* ---------- Design Tokens ---------- */
:root{
  --ink:        #0A0A0A;
  --charcoal:   #1C1C1C;
  --graphite:   #3A3A3A;
  --grey:       #767671;
  --line:       #E3E1DB;
  --paper:      #F7F5F1;
  --white:      #FFFFFF;

  --font-display: 'Manrope', 'Inter', sans-serif;
  --font-mono:    'Space Mono', monospace;

  --container: 1240px;
  --radius-s: 8px;
  --radius-m: 16px;
  --radius-l: 28px;

  --ease: cubic-bezier(.16,.84,.44,1);
  --dur-s: .3s;
  --dur-m: .6s;
  --dur-l: 1s;

  --shadow-soft: 0 20px 60px -20px rgba(0,0,0,.25);
  --shadow-card: 0 12px 30px -12px rgba(0,0,0,.15);
}

/* ---------- Reset ---------- */
*,*::before,*::after{ box-sizing: border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}
body{
  font-family: var(--font-display);
  color: var(--ink);
  background: var(--white);
  line-height: 1.5;
  -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; background:none; border:none; cursor:pointer; color:inherit; }
input,textarea{ font:inherit; }
svg{ fill:none; stroke:currentColor; stroke-width:1.6; }
.icon{ width:18px; height:18px; fill:currentColor; stroke:none; }

.container{ max-width: var(--container); margin:0 auto; padding: 0 32px; }
@media (max-width: 640px){ .container{ padding: 0 20px; } }

/* ---------- Typography ---------- */
.eyebrow{
  display:flex; align-items:center; gap:8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 18px;
}
.eyebrow--light{ color: rgba(255,255,255,.55); }
.eyebrow__dot{ width:6px; height:6px; border-radius:50%; background: currentColor; }

.section-h{
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.08;
  color: var(--ink);
}
.section-h--light{ color: var(--white); }

.section-head{ max-width: 640px; margin-bottom: 56px; }

.text-link{
  display:inline-flex; gap:8px; align-items:center;
  font-weight: 600; border-bottom: 1px solid var(--ink); padding-bottom: 2px;
  transition: gap var(--dur-s) var(--ease), opacity var(--dur-s);
}
.text-link:hover{ gap:14px; }
.text-link span{ transition: transform var(--dur-s) var(--ease); }

.section{ padding: 120px 0; }
.section--dark{ background: var(--ink); color: var(--white); }
.section--paper{ background: var(--paper); }
@media (max-width: 780px){ .section{ padding: 80px 0; } }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding: 16px 30px;
  font-weight: 700; font-size: 15px;
  border-radius: 999px;
  transition: transform var(--dur-s) var(--ease), background var(--dur-s), color var(--dur-s), box-shadow var(--dur-s);
  white-space: nowrap;
  position: relative;
}
.btn--solid{ background: var(--ink); color: var(--white); }
.btn--solid:hover{ transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.btn--ghost{ border: 1.5px solid var(--ink); color: var(--ink); }
.btn--ghost:hover{ background: var(--ink); color: var(--white); transform: translateY(-2px); }
.btn--onDark.btn--solid{ background: var(--white); color: var(--ink); }
.btn--onDark.btn--ghost{ border-color: rgba(255,255,255,.5); color: var(--white); }
.btn--onDark.btn--ghost:hover{ background: var(--white); color: var(--ink); }
.btn--pill.btn--header{ padding: 11px 22px; font-size: 13.5px; }
.btn--header{ background: var(--ink); color: var(--white); }
.btn--header:hover{ transform: translateY(-1px); }

/* ---------- Loader ---------- */
.loader{
  position: fixed; inset:0; z-index: 999;
  background: var(--ink);
  display:flex; align-items:center; justify-content:center;
  transition: opacity .6s var(--ease), visibility .6s;
}
.loader.is-hidden{ opacity:0; visibility:hidden; }
.loader__mark{ width:90px; height:90px; }
.loader__stitch{ width:100%; height:100%; stroke: var(--white); stroke-width:3; stroke-dasharray: 8 8; fill:none; animation: stitch-run 1.1s linear infinite; }
@keyframes stitch-run{ to{ stroke-dashoffset: -160; } }

/* ---------- Scroll progress ---------- */
.progress-bar{
  position: fixed; top:0; left:0; height:3px; width:0%;
  background: var(--ink); z-index: 998; transition: width .1s linear;
}

/* ---------- Custom cursor ---------- */
.cursor-dot, .cursor-ring{
  position: fixed; top:0; left:0; pointer-events:none; z-index: 997;
  border-radius:50%; transform: translate(-50%,-50%);
  transition: opacity .2s;
}
.cursor-dot{ width:6px; height:6px; background: var(--ink); }
.cursor-ring{ width:36px; height:36px; border: 1.5px solid var(--ink); transition: transform .15s var(--ease), opacity .2s, width .2s, height .2s; }
.cursor-ring.is-active{ width:56px; height:56px; background: rgba(10,10,10,.06); }
@media (hover:none), (max-width: 900px){ .cursor-dot,.cursor-ring{ display:none; } }

/* ---------- Header ---------- */
.site-header{
  position: fixed; top:0; left:0; right:0; z-index: 500;
  padding: 22px 0;
  transition: padding var(--dur-s) var(--ease), background var(--dur-s), box-shadow var(--dur-s), border-color var(--dur-s);
  border-bottom: 1px solid transparent;
}
.site-header.is-solid{
  padding: 14px 0;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom-color: var(--line);
}
.header__inner{ display:flex; align-items:center; gap: 28px; }
.brand{ display:flex; align-items:center; gap:10px; margin-right:auto; }
.brand__mark{ width:38px; height:38px; border-radius:50%; object-fit:cover; }
.brand__name{ font-weight:800; font-size: 15px; letter-spacing:.02em; }

.nav__list{ display:flex; gap: 30px; }
.nav__link{
  font-size: 14px; font-weight:600; color: var(--graphite);
  position: relative; padding: 4px 0;
}
.nav__link::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:1.5px; background: var(--ink);
  transition: right var(--dur-s) var(--ease);
}
.nav__link:hover::after{ right:0; }

.nav-toggle{ display:none; flex-direction:column; gap:5px; width:26px; }
.nav-toggle span{ height:2px; background: var(--ink); border-radius:2px; transition: transform var(--dur-s), opacity var(--dur-s); }

@media (max-width: 980px){
  .btn--header{ display:none; }
  .nav-toggle{ display:flex; }
  .nav{
    position: fixed; inset: 0 0 0 30%; background: var(--white);
    padding: 110px 32px 40px; transform: translateX(100%);
    transition: transform var(--dur-m) var(--ease);
    box-shadow: -20px 0 60px rgba(0,0,0,.1);
  }
  .nav.is-open{ transform: translateX(0); }
  .nav__list{ flex-direction:column; gap: 22px; }
  .nav__link{ font-size: 18px; }
  .nav-toggle.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2){ opacity:0; }
  .nav-toggle.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }
}
@media (max-width: 480px){ .nav{ inset: 0; } }

/* ---------- Reveal on scroll ---------- */
[data-reveal]{ opacity:0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].is-visible{ opacity:1; transform: none; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  padding: 180px 0 80px;
  overflow: hidden;
  background: var(--white);
}
.hero__weave{
  position: absolute; inset:0; z-index:0; pointer-events:none;
  background-image:
    repeating-linear-gradient(115deg, rgba(10,10,10,.035) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(25deg, rgba(10,10,10,.035) 0 1px, transparent 1px 34px);
  mask-image: radial-gradient(ellipse 70% 60% at 70% 20%, black, transparent 75%);
}
.hero__weave--alt{
  background-image:
    repeating-linear-gradient(115deg, rgba(255,255,255,.05) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(25deg, rgba(255,255,255,.05) 0 1px, transparent 1px 34px);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 30%, black, transparent 75%);
}
.hero__seam{ position:absolute; inset:0; width:100%; height:100%; z-index:0; pointer-events:none; }
.seam-path{ fill:none; stroke: var(--line); stroke-width:2; stroke-dasharray: 2 10; stroke-linecap: round; }

.hero__grid{
  position: relative; z-index:1;
  display:grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items:center;
}
.hero__headline{
  font-size: clamp(2.6rem, 5.4vw, 4.4rem);
  font-weight: 800; letter-spacing:-.03em; line-height:1.05;
  margin-bottom: 22px;
}
.hero__headline em{ font-style: normal; color: var(--graphite); }
.hero__sub{ font-size: 18px; color: var(--grey); max-width: 460px; margin-bottom: 34px; }
.hero__actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 56px; }
.hero__actions--center{ justify-content:center; }

.hero__stats{ display:flex; gap: 44px; }
.hero__stats dt{ font-family: var(--font-mono); font-size: 30px; font-weight:700; }
.hero__stats dd{ font-size: 12.5px; color: var(--grey); margin-top:2px; }

.hero__visual{ position: relative; }
.hero__frame{ position: relative; border-radius: var(--radius-l); overflow:hidden; box-shadow: var(--shadow-soft); }
.hero__img{ width:100%; height: 560px; object-fit: cover; filter: grayscale(.15) contrast(1.03); transition: transform 1.2s var(--ease); }
.hero__frame:hover .hero__img{ transform: scale(1.04); }
.hero__frame-outline{ position:absolute; top:20px; left:20px; right:-20px; bottom:-20px; border:1.5px solid var(--line); border-radius: var(--radius-l); z-index:-1; }
.hero__tag{
  position:absolute; padding: 10px 18px; border-radius: 999px;
  background: rgba(255,255,255,.85); backdrop-filter: blur(10px);
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing:.06em; text-transform:uppercase;
  box-shadow: var(--shadow-card);
  animation: float 5s ease-in-out infinite;
}
.hero__tag--1{ top: 26px; left: 26px; }
.hero__tag--2{ bottom: 26px; right: 26px; animation-delay: 1.4s; }
@keyframes float{ 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-9px); } }

.hero__scroll{
  position:absolute; left:50%; bottom: 22px; transform: translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing:.14em; text-transform:uppercase; color: var(--grey);
  z-index:1;
}
.hero__scroll span{ width:1px; height:34px; background: linear-gradient(var(--ink), transparent); position:relative; overflow:hidden; }
.hero__scroll span::after{ content:""; position:absolute; top:-100%; left:0; width:100%; height:100%; background: var(--ink); animation: scrollLine 2s var(--ease) infinite; }
@keyframes scrollLine{ to{ top:100%; } }

@media (max-width: 980px){
  .hero{ padding-top: 140px; }
  .hero__grid{ grid-template-columns: 1fr; }
  .hero__img{ height: 380px; }
  .hero__stats{ gap: 28px; flex-wrap:wrap; }
}

/* ---------- Trust bar ---------- */
.trust{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); overflow:hidden; padding: 26px 0; }
.trust__track{ display:flex; width: max-content; animation: scrollTrust 32s linear infinite; }
.trust:hover .trust__track{ animation-play-state: paused; }
.trust__group{ display:flex; gap: 64px; padding-right: 64px; }
.trust__group span{ font-family: var(--font-mono); font-size: 13px; letter-spacing:.08em; text-transform:uppercase; color: var(--grey); white-space:nowrap; }
@keyframes scrollTrust{ to{ transform: translateX(-50%); } }

/* ---------- About ---------- */
.about__grid{ display:grid; grid-template-columns: .8fr 2fr; gap: 60px; }
.about__copy{ display:flex; flex-direction:column; gap:16px; max-width: 620px; color: var(--graphite); font-size: 16.5px; margin: 26px 0 30px; }
@media (max-width: 780px){ .about__grid{ grid-template-columns:1fr; gap:24px; } }

/* ---------- Why us cards ---------- */
.why__grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.1); border-radius: var(--radius-m); overflow:hidden; }
.why-card{
  background: var(--charcoal); padding: 34px 26px; transition: background var(--dur-s), transform var(--dur-s);
}
.why-card:hover{ background: var(--graphite); transform: translateY(-4px); }
.why-card__icon{ width:26px; height:26px; color: var(--white); margin-bottom: 20px; }
.why-card h3{ font-size: 17px; margin-bottom: 8px; }
.why-card p{ font-size: 14px; color: rgba(255,255,255,.6); line-height:1.6; }
@media (max-width: 980px){ .why__grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px){ .why__grid{ grid-template-columns: 1fr; } }

/* ---------- Solutions ---------- */
.solutions__grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.sol-card{ position:relative; border-radius: var(--radius-m); overflow:hidden; aspect-ratio: 3/4; box-shadow: var(--shadow-card); }
.sol-card--wide{ grid-column: span 2; aspect-ratio: 16/10; }
.sol-card img{ width:100%; height:100%; object-fit:cover; transition: transform 1s var(--ease); }
.sol-card:hover img{ transform: scale(1.08); }
.sol-card__body{
  position:absolute; inset:auto 0 0 0; padding: 20px;
  background: linear-gradient(to top, rgba(0,0,0,.85), transparent 80%);
  color: var(--white);
}
.sol-card__body h3{ font-size: 16px; margin-bottom:4px; }
.sol-card__body p{ font-size: 12.5px; color: rgba(255,255,255,.75); line-height:1.4; }
.section-cta{ margin-top: 56px; text-align:center; }
@media (max-width: 980px){ .solutions__grid{ grid-template-columns: repeat(2,1fr); } .sol-card--wide{ grid-column: span 2; } }
@media (max-width: 560px){ .solutions__grid{ grid-template-columns: 1fr; } .sol-card--wide{ grid-column: span 1; } }

/* ---------- Industries ---------- */
.industries__wrap{ display:grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.industries__label{ font-family: var(--font-mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase; color: var(--grey); margin-bottom: 20px; }
.ind-grid{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.ind-card{
  display:flex; flex-direction:column; gap:14px; padding: 26px 20px;
  background: var(--white); border:1px solid var(--line); border-radius: var(--radius-m);
  transition: transform var(--dur-s) var(--ease), box-shadow var(--dur-s), border-color var(--dur-s);
}
.ind-card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: var(--ink); }
.ind-card--active{ background: var(--ink); color: var(--white); border-color: var(--ink); }
.ind-card__icon{ width:24px; height:24px; }
.ind-card span{ font-weight:700; font-size:14.5px; }
@media (max-width: 780px){ .industries__wrap{ grid-template-columns:1fr; gap:36px; } }
@media (max-width: 420px){ .ind-grid{ grid-template-columns:1fr 1fr; } }

/* ---------- Process timeline ---------- */
.timeline{ position: relative; display:flex; flex-direction:column; gap: 0; max-width: 760px; margin: 0 auto; }
.timeline::before{ content:""; position:absolute; left:29px; top:10px; bottom:10px; width:1px; background: repeating-linear-gradient(rgba(255,255,255,.25) 0 6px, transparent 6px 12px); }
.timeline__item{ display:flex; gap: 30px; padding: 26px 0; position:relative; }
.timeline__num{
  font-family: var(--font-mono); font-weight:700; font-size: 14px;
  width: 58px; height:58px; flex-shrink:0; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background: var(--charcoal); border: 1px solid rgba(255,255,255,.15);
  z-index:1;
}
.timeline__item h3{ font-size: 18px; margin-bottom:4px; }
.timeline__item p{ color: rgba(255,255,255,.6); font-size: 14.5px; max-width: 460px; }

/* ---------- Matter / infographic ---------- */
.matter__grid{ display:grid; grid-template-columns: .8fr 1.2fr; gap: 60px; }
.matter__copy{ color: var(--grey); font-size:16px; max-width: 380px; margin-top:8px; }
.matter__list{ display:flex; flex-direction:column; }
.matter__row{ display:flex; gap:20px; padding: 22px 0; border-bottom:1px solid var(--line); align-items:flex-start; }
.matter__row:first-child{ border-top:1px solid var(--line); }
.matter__icon{ width:42px; height:42px; flex-shrink:0; border-radius:50%; background: var(--paper); display:flex; align-items:center; justify-content:center; }
.matter__icon svg{ width:20px; height:20px; }
.matter__row h4{ font-size: 16px; margin-bottom:3px; }
.matter__row p{ font-size: 14px; color: var(--grey); }
@media (max-width: 780px){ .matter__grid{ grid-template-columns:1fr; gap:30px; } }

/* ---------- Testimonials slider ---------- */
.slider{ max-width: 760px; margin: 0 auto; text-align:center; }
.slider__track{ display:flex; transition: transform .6s var(--ease); }
.slide{ flex: 0 0 100%; padding: 0 10px; }
.slide p{ font-size: clamp(20px, 3vw, 28px); font-weight:600; line-height:1.4; letter-spacing:-.01em; margin-bottom: 26px; }
.slide footer strong{ display:block; font-size:14px; }
.slide footer span{ font-size:13px; color: rgba(255,255,255,.5); }
.slider__nav{ display:flex; align-items:center; justify-content:center; gap: 26px; margin-top: 40px; }
.slider__btn{ width:44px; height:44px; border-radius:50%; border:1px solid rgba(255,255,255,.25); transition: background var(--dur-s), border-color var(--dur-s); }
.slider__btn:hover{ background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }
.slider__dots{ display:flex; gap:8px; }
.slider__dots button{ width:8px; height:8px; border-radius:50%; background: rgba(255,255,255,.25); transition: background var(--dur-s), transform var(--dur-s); }
.slider__dots button.is-active{ background: var(--white); transform: scale(1.3); }

/* ---------- FAQ ---------- */
.faq__grid{ display:grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items:start; }
.accordion{ border-top: 1px solid var(--line); }
.acc-item{ border-bottom: 1px solid var(--line); }
.acc-trigger{
  width:100%; display:flex; justify-content:space-between; align-items:center;
  padding: 22px 0; text-align:left; font-size: 16.5px; font-weight:600;
}
.acc-icon{ font-family: var(--font-mono); font-size:20px; font-weight:400; transition: transform var(--dur-s) var(--ease); flex-shrink:0; margin-left: 20px; }
.acc-trigger[aria-expanded="true"] .acc-icon{ transform: rotate(45deg); }
.acc-panel{ max-height:0; overflow:hidden; transition: max-height var(--dur-m) var(--ease); }
.acc-panel p{ padding-bottom: 22px; color: var(--grey); font-size:15px; max-width: 560px; line-height:1.6; }
@media (max-width: 780px){ .faq__grid{ grid-template-columns:1fr; gap:30px; } }

/* ---------- Final CTA ---------- */
.final-cta{ position:relative; background: var(--ink); color: var(--white); padding: 130px 0; overflow:hidden; }
.final-cta__inner{ position:relative; z-index:1; text-align:center; max-width: 640px; margin:0 auto; }
.final-cta__h{ font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight:800; letter-spacing:-.02em; margin-bottom: 16px; }
.final-cta__sub{ color: rgba(255,255,255,.6); font-size:17px; margin-bottom: 40px; }

.quote-form{ margin-top: 60px; text-align:left; display:none; flex-direction:column; gap: 16px; background: rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.12); padding: 30px; border-radius: var(--radius-m); }
.quote-form.is-open{ display:flex; }
.quote-form__row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field label{ display:block; font-family: var(--font-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color: rgba(255,255,255,.5); margin-bottom:8px; }
.field input, .field textarea{
  width:100%; background: rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.16); border-radius: var(--radius-s);
  padding: 12px 14px; color: var(--white); transition: border-color var(--dur-s);
}
.field input:focus, .field textarea:focus{ outline:none; border-color: var(--white); }
.quote-form__note{ font-size:13px; color: rgba(255,255,255,.6); min-height: 18px; }
@media (max-width: 560px){ .quote-form__row{ grid-template-columns:1fr; } }

/* ---------- Footer ---------- */
.site-footer{ background: var(--paper); padding: 80px 0 0; }
.footer__grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 60px; }
.footer__brand p{ color: var(--grey); font-size:14px; margin-top:14px; max-width: 240px; }
.brand--footer{ margin-bottom:0; }
.footer__col h4{ font-family: var(--font-mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase; color: var(--grey); margin-bottom: 18px; }
.footer__col ul{ display:flex; flex-direction:column; gap: 10px; }
.footer__col a{ font-size:14.5px; transition: opacity var(--dur-s); }
.footer__col a:hover{ opacity:.6; }
.footer__col li{ font-size:14.5px; color: var(--graphite); }
.footer__social{ display:flex; gap:12px; margin-top:18px; }
.footer__social a{ width:38px; height:38px; border-radius:50%; border:1px solid var(--line); display:flex; align-items:center; justify-content:center; transition: background var(--dur-s), color var(--dur-s); }
.footer__social a:hover{ background: var(--ink); color: var(--white); }
.footer__bottom{ border-top:1px solid var(--line); padding: 22px 0; text-align:center; font-size:13px; color: var(--grey); }
@media (max-width: 900px){ .footer__grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px){ .footer__grid{ grid-template-columns: 1fr; } }

/* ---------- Floating WhatsApp ---------- */
.fab-whatsapp{
  position: fixed; right: 26px; bottom: 26px; z-index: 400;
  width: 58px; height:58px; border-radius:50%;
  background: var(--ink); color: var(--white);
  display:flex; align-items:center; justify-content:center;
  box-shadow: var(--shadow-soft);
  transition: transform var(--dur-s) var(--ease);
}
.fab-whatsapp:hover{ transform: scale(1.08); }
.fab-whatsapp .icon{ width:26px; height:26px; }

/* ---------- Back to top ---------- */
.back-to-top{
  position: fixed; right: 26px; bottom: 96px; z-index: 400;
  width: 46px; height:46px; border-radius:50%;
  background: var(--white); border:1px solid var(--line); color: var(--ink);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transform: translateY(10px);
  transition: opacity var(--dur-s), transform var(--dur-s), visibility var(--dur-s);
}
.back-to-top.is-visible{ opacity:1; visibility:visible; transform:none; }
.back-to-top svg{ width:18px; height:18px; }

/* ---------- Focus states (accessibility) ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--ink); outline-offset: 3px;
}
.section--dark a:focus-visible, .section--dark button:focus-visible{ outline-color: var(--white); }