/* =========================================================
   AL NOOR RCC PIPE FACTORY — Design tokens
   Palette: concrete / charcoal / steel / safety-orange / brass
   Type: Oswald (display) + Work Sans (body)
   Signature motif: pipe-ring circles used as numbering + dividers
   ========================================================= */

:root{
  --concrete:      #EDEAE2;
  --concrete-dark: #DCD6C8;
  --ink:            #1D2320;
  --ink-soft:       #3A423E;
  --steel:          #55636B;
  --steel-light:    #8C99A1;
  --safety:         #E1590E;
  --safety-dark:    #B84509;
  --brass:          #B6892C;
  --white:          #FEFDFB;

  --font-display: 'Oswald', sans-serif;
  --font-body: 'Work Sans', sans-serif;

  --radius: 4px;
  --radius-lg: 18px;
  --shadow-md: 0 12px 30px -12px rgba(20, 24, 22, 0.35);
  --shadow-sm: 0 4px 14px -6px rgba(20, 24, 22, 0.25);

  --maxw: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--concrete);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 .5em;
  letter-spacing: .01em;
}
p{ margin: 0 0 1em; }
ul{ margin:0; padding:0; list-style:none; }
.wrap{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}
:focus-visible{
  outline: 3px solid var(--safety);
  outline-offset: 2px;
}

/* -------- scroll progress bar -------- */
.scroll-progress{
  position: fixed; top:0; left:0; height:3px; width:0%;
  background: linear-gradient(90deg, var(--safety), var(--brass));
  z-index: 300;
  transition: width .12s linear;
}

/* -------- scroll-reveal system -------- */
.reveal{
  opacity: 0;
  transform: translateY(26px) scale(.97);
  transition: opacity .7s cubic-bezier(.16,.84,.44,1), transform .7s cubic-bezier(.16,.84,.44,1);
  transition-delay: var(--reveal-delay, 0s);
}
.reveal.is-visible{ opacity:1; transform:none; }
.reveal-hero{ transform: translateY(34px); }

.clip-reveal{
  transition: opacity .7s cubic-bezier(.16,.84,.44,1),
              transform .7s cubic-bezier(.16,.84,.44,1),
              clip-path .9s cubic-bezier(.16,.84,.44,1) .08s;
  clip-path: inset(0 0 0 10%);
}
.clip-reveal.is-visible{ clip-path: inset(0 0 0 0%); }

@media (prefers-reduced-motion: reduce){
  .reveal, .clip-reveal{ opacity:1; transform:none; clip-path:none; transition:none; }
}

/* -------- buttons -------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: .84rem;
  padding: .85em 1.5em;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  cursor:pointer;
  position: relative;
  overflow: hidden;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease, box-shadow .25s ease;
}
.btn::after{
  content:"";
  position:absolute; top:0; left:-75%; width:45%; height:100%;
  background: linear-gradient(115deg, transparent, rgba(255,255,255,.4), transparent);
  transform: skewX(-20deg);
  transition: left .6s cubic-bezier(.16,.84,.44,1);
  pointer-events:none;
}
.btn:hover::after{ left:130%; }
.btn:hover{ transform: translateY(-2px); }
.btn-primary{ background: var(--safety); color: var(--white); }
.btn-primary:hover{ background: var(--safety-dark); box-shadow: 0 10px 26px -10px rgba(225,89,14,.65); }
.btn-ghost{ border-color: rgba(254,253,251,.55); color: var(--white); }
.btn-ghost:hover{ background: rgba(254,253,251,.12); box-shadow: 0 10px 26px -12px rgba(254,253,251,.25); }
.btn-call{ background: var(--ink); color: var(--white); padding:.68em 1.25em; }
.btn-call:hover{ background: var(--safety); box-shadow: 0 10px 22px -10px rgba(225,89,14,.6); }

/* -------- signature pipe-ring motifs -------- */
.ring-num{
  width: 54px; height:54px;
  border-radius:50%;
  border: 2px solid var(--safety);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  position: relative;
  flex: none;
}
.ring-num::before{
  content:"";
  position:absolute; inset:8px;
  border-radius:50%;
  border: 1px solid rgba(254,253,251,.35);
}
.ring-sm{
  width: 34px; height:34px; border-radius:50%;
  border:2px solid var(--safety);
  display:inline-block;
  position: relative;
  margin-bottom: 14px;
}
.ring-sm::before{
  content:"";
  position:absolute; inset:6px;
  border-radius:50%;
  border:1px solid var(--brass);
}
.spec-ring{
  width:44px;height:44px;border-radius:50%;
  border:2px solid var(--brass);
  display:block;margin-bottom:16px;
  position:relative;
}
.spec-ring::before{
  content:"";
  position:absolute; inset:7px;
  border-radius:50%;
  border:1px solid rgba(182,137,44,.55);
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(29,35,32,.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(254,253,251,.08);
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.is-scrolled{
  box-shadow: 0 12px 30px -16px rgba(0,0,0,.55);
  background: rgba(20,24,21,.97);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap: 20px;
  padding: 12px 28px;
}
.brand{ display:flex; align-items:center; gap:10px; color:var(--white); }
.brand-mark{ color: var(--safety); display:flex; transition: transform .5s cubic-bezier(.34,1.56,.64,1); }
.brand:hover .brand-mark{ transform: rotate(50deg); }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text strong{ font-family: var(--font-display); font-size:1.05rem; letter-spacing:.04em; }
.brand-text em{ font-style:normal; font-size:.68rem; letter-spacing:.12em; text-transform:uppercase; color: var(--steel-light); }

.main-nav{ display:flex; gap: 28px; }
.main-nav a{
  color: rgba(254,253,251,.85);
  font-size:.86rem;
  text-transform: uppercase;
  letter-spacing:.06em;
  font-family: var(--font-display);
  position:relative;
  padding: 6px 0;
}
.main-nav a::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:2px;
  background: var(--safety);
  transition: right .2s ease;
}
.main-nav a:hover::after{ right:0; }

.nav-toggle{
  display:none;
  flex-direction:column; justify-content:center; gap:5px;
  width: 40px; height:40px;
  background:none; border:none; cursor:pointer;
}
.nav-toggle span{ width:22px; height:2px; background:var(--white); }

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;
  min-height: 92vh;
  display:flex; align-items:flex-end;
  color: var(--white);
  overflow:hidden;
}
.hero-media{ position:absolute; inset:0; }
.hero-media img{
  width:100%; height:100%; object-fit:cover; object-position: center 60%;
  animation: kenburns 24s ease-in-out infinite alternate;
}
@keyframes kenburns{
  0%{ transform: scale(1) translate3d(0,0,0); }
  100%{ transform: scale(1.1) translate3d(-1.2%,-1%,0); }
}
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(0deg, rgba(15,18,16,.94) 0%, rgba(15,18,16,.72) 38%, rgba(15,18,16,.35) 70%, rgba(15,18,16,.55) 100%);
}
.hero::after{
  content:"";
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background: radial-gradient(460px circle at var(--mx,50%) var(--my,42%), rgba(225,89,14,.22), transparent 62%);
  opacity:0; transition: opacity .5s ease;
}
.hero:hover::after{ opacity:1; }
.hero-rings{
  position:absolute; right:-60px; top:-60px; width:420px; height:420px;
  color: rgba(254,253,251,.14);
  pointer-events:none;
}
.hero-rings svg{ position:absolute; inset:0; width:100%; height:100%; }
.ring-outer{ animation: spin-cw 90s linear infinite; }
.ring-inner{ animation: spin-ccw 60s linear infinite; }
@keyframes spin-cw{ to{ transform: rotate(360deg); } }
@keyframes spin-ccw{ to{ transform: rotate(-360deg); } }
@media (prefers-reduced-motion: reduce){
  .hero-media img{ animation:none; }
  .ring-outer, .ring-inner{ animation:none; }
}
.hero-content{
  position:relative; z-index:2;
  padding-top: 160px;
  padding-bottom: 72px;
}
.eyebrow{
  font-family: var(--font-display);
  text-transform:uppercase; letter-spacing:.18em; font-size:.78rem;
  color: var(--brass);
  margin-bottom: 18px;
}
.hero h1{
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  text-transform: uppercase;
  max-width: 14ch;
  margin-bottom: .3em;
}
.hero-lead{
  max-width: 56ch;
  font-size: 1.08rem;
  color: rgba(254,253,251,.86);
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin: 28px 0 48px; }

.hero-stats{
  display:grid; grid-template-columns: repeat(4,minmax(0,1fr));
  gap: 24px;
  border-top: 1px solid rgba(254,253,251,.2);
  padding-top: 28px;
  max-width: 760px;
}
.hero-stats dt{
  font-family: var(--font-display);
  font-size: 1.7rem;
  color: var(--safety);
}
.hero-stats dd{
  margin:0; font-size:.78rem; text-transform:uppercase; letter-spacing:.05em;
  color: rgba(254,253,251,.75);
}

/* =========================================================
   SECTION shell
   ========================================================= */
.section{ padding: 96px 0; }
.section-dark{ background: var(--ink); color: var(--white); }
.section-muted{ background: var(--concrete-dark); }
.section-dark p, .section-dark .section-sub{ color: rgba(254,253,251,.78); }

.section-head{ max-width: 720px; margin-bottom: 52px; }
.tag{
  display:inline-block;
  font-family: var(--font-display);
  text-transform:uppercase; letter-spacing:.14em; font-size:.78rem;
  color: var(--safety-dark);
  padding-bottom: 6px;
  margin-bottom: 18px;
  position: relative;
}
.tag::after{
  content:"";
  position:absolute; left:0; bottom:0; height:2px; width:100%;
  background: var(--safety);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform .8s cubic-bezier(.16,.84,.44,1) .2s;
}
.section-head.is-visible .tag::after{ transform: scaleX(1); }
.tag-light{ color: var(--brass); }
.tag-light::after{ background: var(--brass); }
.section-head h2{
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  text-transform: uppercase;
  max-width: 18ch;
}
.section-sub{ color: var(--ink-soft); max-width: 60ch; }

/* =========================================================
   ABOUT
   ========================================================= */
.about-grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  margin-bottom: 64px;
}
.about-copy .lede{ font-size:1.2rem; font-weight:500; color: var(--ink); }
.leader-cards{ display:flex; flex-direction:column; gap:20px; }
.leader-card{
  margin:0; padding: 26px 28px;
  background: var(--white);
  border-left: 4px solid var(--safety);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  box-shadow: var(--shadow-sm);
  transition: transform .3s cubic-bezier(.16,.84,.44,1), box-shadow .3s ease;
}
.leader-card:hover{ transform: translateY(-5px); box-shadow: var(--shadow-md); }
.leader-card p{ font-style: italic; color: var(--ink-soft); margin-bottom: 14px; }
.leader-card footer{ display:flex; flex-direction:column; }
.leader-name{ font-family: var(--font-display); text-transform:uppercase; letter-spacing:.04em; }
.leader-role{ font-size:.78rem; color: var(--steel); text-transform:uppercase; letter-spacing:.06em; }

.vmv-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.vmv-card{
  background: var(--ink);
  color: var(--white);
  padding: 30px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: transform .3s cubic-bezier(.16,.84,.44,1), box-shadow .3s ease, border-color .3s ease;
}
.vmv-card:hover{
  transform: translateY(-6px);
  box-shadow: 0 18px 36px -16px rgba(0,0,0,.5);
  border-color: rgba(225,89,14,.4);
}
.vmv-card h3{
  text-transform: uppercase;
  color: var(--brass);
  font-size: 1.05rem;
  margin-bottom: .6em;
}
.vmv-card p{ color: rgba(254,253,251,.82); margin:0; }
.vmv-values ul{ display:flex; flex-direction:column; gap:10px; }
.vmv-values li{
  padding-left: 22px;
  position:relative;
  color: rgba(254,253,251,.9);
  font-size: .96rem;
}
.vmv-values li::before{
  content:""; position:absolute; left:0; top:.55em;
  width:8px; height:8px; border-radius:50%;
  border: 2px solid var(--safety);
}

/* =========================================================
   SPECIFICATIONS
   ========================================================= */
.specs-grid{
  display:grid; grid-template-columns: repeat(2,1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.spec-card{
  background: rgba(254,253,251,.04);
  border: 1px solid rgba(254,253,251,.12);
  padding: 30px 28px;
  border-radius: var(--radius-lg);
  transition: transform .3s cubic-bezier(.16,.84,.44,1), background .3s ease, border-color .3s ease;
}
.spec-card:hover{
  transform: translateY(-5px);
  background: rgba(254,253,251,.07);
  border-color: rgba(182,137,44,.5);
}
.spec-card h3{ font-size: 1.1rem; text-transform: none; color: var(--white); margin-bottom:.5em; }
.specs-table-wrap{
  background: rgba(254,253,251,.04);
  border: 1px solid rgba(254,253,251,.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  overflow-x:auto;
}
.specs-table{ width:100%; border-collapse: collapse; min-width: 560px; }
.specs-table caption{ text-align:left; font-family:var(--font-display); text-transform:uppercase; letter-spacing:.05em; font-size:.82rem; color:var(--brass); margin-bottom: 16px; }
.specs-table th, .specs-table td{
  text-align:left; padding: 11px 14px;
  border-bottom: 1px solid rgba(254,253,251,.12);
  font-size:.92rem;
}
.specs-table th{ text-transform:uppercase; letter-spacing:.04em; font-size:.72rem; color: var(--steel-light); font-weight:600; }
.specs-note{ margin: 16px 0 0; font-size:.85rem; color: rgba(254,253,251,.6); }

/* =========================================================
   PRODUCTS
   ========================================================= */
.product-gallery{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 36px;
}
.product-card{
  margin:0; position:relative; overflow:hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.product-card--wide{ grid-column: span 2; }
.product-card img{ width:100%; height:100%; object-fit:cover; aspect-ratio: 16/8; transition: transform .5s ease; }
.product-card:not(.product-card--wide) img{ aspect-ratio: 4/3; }
.product-card:hover img{ transform: scale(1.05); }
.product-card figcaption{
  position:absolute; left:0; right:0; bottom:0;
  padding: 14px 18px;
  font-family: var(--font-display);
  text-transform:uppercase; letter-spacing:.04em; font-size:.82rem;
  color:var(--white);
  background: linear-gradient(0deg, rgba(15,18,16,.85), transparent);
}
.chip-row{ display:flex; flex-wrap:wrap; gap:10px; }
.chip-row li{
  font-family: var(--font-display);
  border: 1.5px solid var(--steel);
  color: var(--ink-soft);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: .88rem;
  transition: background .25s ease, color .25s ease, border-color .25s ease, transform .2s ease;
}
.chip-row li:hover{
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
  transform: translateY(-2px);
}

/* =========================================================
   PROCESS
   ========================================================= */
.process-rail{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  counter-reset: step;
}
.process-step{ display:flex; flex-direction:column; gap:16px; }
.process-media{
  border-radius: var(--radius-lg); overflow:hidden; box-shadow: var(--shadow-sm);
  clip-path: inset(0 0 0 100%);
  transition: clip-path .85s cubic-bezier(.16,.84,.44,1) .15s;
}
.process-step.is-visible .process-media{ clip-path: inset(0 0 0 0%); }
.process-media img{ aspect-ratio: 4/3; object-fit:cover; width:100%; transition: transform .6s ease; }
.process-step:hover .process-media img{ transform: scale(1.06); }
@media (prefers-reduced-motion: reduce){
  .process-media{ clip-path:none; }
}
.process-step h3{ font-size: 1.05rem; text-transform:none; color:var(--white); margin: 4px 0 .3em; }
.process-step p{ color: rgba(254,253,251,.72); font-size:.92rem; margin:0; }

/* =========================================================
   WHY CHOOSE US
   ========================================================= */
.why-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px 28px;
}
.why-item{ transition: transform .3s ease; }
.why-item:hover{ transform: translateY(-4px); }
.why-item:hover .ring-sm{ border-color: var(--safety-dark); }
.why-item:hover .ring-sm::before{ border-color: var(--safety); }
.why-item h3{ font-size: 1.02rem; text-transform:none; margin-bottom:.3em; }
.why-item p{ color: var(--steel); font-size:.92rem; margin:0; }
.ring-sm{ transition: border-color .3s ease; }
.ring-sm::before{ transition: border-color .3s ease; }

/* =========================================================
   CLIENTS
   ========================================================= */
.clients-marquee{
  position: relative;
  overflow: hidden;
  margin-bottom: 22px;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%);
}
.clients-track{
  display: flex;
  align-items: center;
  gap: 16px;
  width: max-content;
  animation: marquee-scroll 34s linear infinite;
}
.clients-marquee:hover .clients-track{ animation-play-state: paused; }
.client-logo{
  background: var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  position: relative;
  flex: none;
  width: 183px;
  aspect-ratio: 183 / 135;
  display:flex; align-items:center; justify-content:center;
  transition: transform .25s cubic-bezier(.16,.84,.44,1), box-shadow .25s ease;
}
.client-logo:hover{ transform: translateY(-5px) scale(1.03); box-shadow: var(--shadow-md); }
.client-logo::after{
  content:"";
  position:absolute; top:0; left:-75%; width:45%; height:100%;
  background: linear-gradient(115deg, transparent, rgba(255,255,255,.28), transparent);
  transform: skewX(-20deg);
  transition: left .7s cubic-bezier(.16,.84,.44,1);
  pointer-events:none;
}
.client-logo:hover::after{ left:130%; }
.client-logo img{ width:100%; height:100%; object-fit: cover; display:block; }

@keyframes marquee-scroll{
  from{ transform: translateX(0); }
  to{ transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce){
  .clients-track{ animation: none; flex-wrap: wrap; width:100%; }
  .clients-track [aria-hidden="true"]{ display:none; }
}
@media (max-width: 560px){
  .client-logo{ width: 140px; }
}

.clients-more{
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--steel);
    margin: 24px 0 0;
    text-align: center;
    width: 100%;
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact-grid{
  display:grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 40px;
  align-items:stretch;
}
.contact-info{ display:flex; flex-direction:column; gap: 30px; }
.contact-block h3{
  font-size: 1rem; text-transform:uppercase; color: var(--white);
  display:flex; align-items:baseline; gap:10px; margin-bottom:.6em;
}
.contact-block h3 span{
  font-family: var(--font-body); font-size:.72rem; text-transform:uppercase;
  color: var(--brass); letter-spacing:.05em; font-weight:500;
}
.contact-link{
  display:flex; align-items:center; gap:10px;
  font-size:1.15rem; font-family: var(--font-display);
  color: var(--white); margin-bottom: 8px;
  width: max-content;
  transition: color .25s ease, transform .25s ease;
}
.contact-link:hover{ color: var(--safety); transform: translateX(4px); }
.contact-link svg{ color: var(--safety); flex:none; transition: transform .25s ease; }
.contact-link:hover svg{ transform: scale(1.15) rotate(-6deg); }
.contact-link--wa{
  font-family: var(--font-body); font-size:.88rem;
  color: var(--brass); text-decoration: underline; text-underline-offset: 3px;
}
.contact-block .address{
  display:flex; gap:10px; align-items:flex-start;
  color: rgba(254,253,251,.85); font-size:1rem;
}
.contact-block .address svg{ color: var(--safety); flex:none; margin-top:3px; }
.contact-link--map{ font-size:.86rem; color: var(--brass); }
.contact-map{
  min-height: 340px;
  border-radius: var(--radius-lg);
  overflow:hidden;
  border: 1px solid rgba(254,253,251,.15);
}
.contact-map iframe{ width:100%; height:100%; min-height:340px; filter: grayscale(.15) contrast(1.05); }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{ background:#141815; color: rgba(254,253,251,.75); padding: 44px 0 0; }
.footer-inner{
  display:flex; justify-content:space-between; align-items:flex-start;
  flex-wrap:wrap; gap: 28px; padding-bottom: 32px;
  border-bottom: 1px solid rgba(254,253,251,.1);
}
.footer-brand{ display:flex; gap:12px; align-items:flex-start; color: var(--white); }
.footer-brand svg{ color: var(--safety); }
.footer-brand strong{ font-family: var(--font-display); letter-spacing:.03em; }
.footer-brand p{ margin: 4px 0 0; font-size:.85rem; color: rgba(254,253,251,.6); }
.footer-contact{ display:flex; flex-direction:column; gap:6px; text-align:right; font-size:.92rem; }
.footer-contact a:hover{ color: var(--safety); }
.footer-bottom{ padding: 18px 28px 26px; font-size:.78rem; color: rgba(254,253,251,.45); }

/* =========================================================
   WHATSAPP FAB
   ========================================================= */
.fab-whatsapp{
  position:fixed; right:22px; bottom:22px; z-index:80;
  width:56px; height:56px; border-radius:50%;
  background:#25D366; color:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow: var(--shadow-md);
  transition: transform .15s ease;
  animation: fab-pop .6s cubic-bezier(.34,1.56,.64,1) 1.1s both;
}
.fab-whatsapp:hover{ transform: scale(1.08); }
.fab-whatsapp::before{
  content:"";
  position:absolute; inset:-6px;
  border-radius:50%;
  border: 2px solid #25D366;
  opacity:.6;
  animation: pulse-ring 2.6s ease-out infinite 2s;
}
@keyframes pulse-ring{
  0%{ transform:scale(.85); opacity:.55; }
  70%{ transform:scale(1.55); opacity:0; }
  100%{ opacity:0; }
}
@keyframes fab-pop{
  from{ transform: scale(0) rotate(-30deg); opacity:0; }
  to{ transform: scale(1) rotate(0); opacity:1; }
}
@media (prefers-reduced-motion: reduce){
  .fab-whatsapp{ animation:none; }
  .fab-whatsapp::before{ animation:none; display:none; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px){
  .about-grid{ grid-template-columns: 1fr; }
  .vmv-grid{ grid-template-columns: 1fr; }
  .specs-grid{ grid-template-columns: 1fr; }
  .process-rail{ grid-template-columns: repeat(2,1fr); }
  .why-grid{ grid-template-columns: repeat(2,1fr); }
  .contact-grid{ grid-template-columns: 1fr; }
  .contact-map{ min-height: 300px; }
}

@media (max-width: 760px){
  .main-nav{
    position:absolute; top:100%; left:0; right:0;
    background: rgba(20,24,21,.98);
    flex-direction:column; gap:0;
    max-height:0; overflow:hidden;
    transition: max-height .3s ease;
  }
  .main-nav.open{ max-height: 420px; }
  .main-nav a{ padding: 16px 28px; border-top:1px solid rgba(254,253,251,.08); }
  .nav-toggle{ display:flex; }
  .header-cta .btn-call span{ display:none; }
  .hero{ min-height: 100vh; }
  .hero-content{ padding-top: 120px; }
  .hero-stats{ grid-template-columns: repeat(2,1fr); }
  .product-card--wide{ grid-column: span 1; }
  .product-gallery{ grid-template-columns: 1fr; }
  .process-rail{ grid-template-columns: 1fr; }
  .why-grid{ grid-template-columns: 1fr; }
  .footer-inner{ flex-direction:column; }
  .footer-contact{ text-align:left; }
  .section{ padding: 64px 0; }
}