/* ==========================================================================
   MANiB — one-page industrial site
   Mobile-first. No frameworks. Vanilla CSS custom properties.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root{
  /* Brand */
  --navy-900:#070d18;
  --navy-800:#0a1526;
  --navy-700:#0d1b33;
  --navy-600:#132845;
  --navy-500:#1c3470;
  --navy-400:#2a4576;
  --navy-300:#3a5a94;

  --steel-100:#eef2f7;
  --steel-200:#dbe2ec;
  --steel-300:#c7d0de;
  --steel-500:#8a99b8;
  --steel-700:#5b6980;

  --copper-300:#e0a868;
  --copper-400:#d99a54;
  --copper-500:#c98a4b;
  --copper-600:#a86c36;

  --ink:#eef2f7;
  --ink-dim:#aab6cc;
  --paper:#f7f8fa;
  --paper-dim:#dfe3e9;
  --black:#08090b;

  /* Type */
  --font-display:'Big Shoulders Display', 'Arial Narrow', sans-serif;
  --font-body:'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:'IBM Plex Mono', 'Courier New', monospace;

  /* Layout */
  --container:1180px;
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:28px;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 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-body);
  background:var(--paper);
  color:var(--navy-800);
  line-height:1.55;
  -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:0;cursor:pointer}
input,textarea{font:inherit}
svg{display:block}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}
}

.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:20px;
}

.skip-link{
  position:absolute;left:-999px;top:0;background:var(--copper-500);color:var(--navy-900);
  padding:10px 16px;z-index:999;border-radius:0 0 8px 0;font-weight:600;
}
.skip-link:focus{left:0}

.eyebrow{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--copper-500);
  margin-bottom:10px;
  font-weight:500;
}
.center{text-align:center;margin-inline:auto}

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.01em;
  line-height:1.05;
  color:var(--navy-900);
}
.accent{color:var(--copper-500)}

h1{font-size:clamp(2.2rem, 8vw, 3.6rem)}
h2{font-size:clamp(1.7rem, 5.5vw, 2.5rem); margin-bottom:18px}
h3{font-size:1.25rem; margin-bottom:8px; letter-spacing:.02em}

p{color:var(--navy-700)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--font-body);font-weight:600;font-size:.95rem;
  padding:13px 24px;border-radius:999px;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:scale(.97)}
.icon-wa{width:19px;height:19px;fill:currentColor;flex-shrink:0}

.btn-primary{
  background:linear-gradient(135deg,#25d366,#1eb355);
  color:#06230f;
  box-shadow:0 8px 24px -8px rgba(37,211,102,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px -8px rgba(37,211,102,.7)}

.btn-outline{
  background:transparent;
  color:var(--navy-900);
  border:1.5px solid var(--navy-500);
}
.btn-outline:hover{background:var(--navy-900);color:var(--paper);border-color:var(--navy-900)}

.btn-ghost{
  color:var(--ink);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  padding:9px 18px;
  font-size:.88rem;
}
.btn-ghost:hover{background:rgba(255,255,255,.16)}

.btn-lg{padding:16px 30px;font-size:1.02rem}
.btn-block{width:100%}

/* ================================================================
   HEADER
   ================================================================ */
.site-header{
  position:fixed;inset-block-start:0;inset-inline:0;z-index:100;
  padding-block:14px;
  transition:background .35s var(--ease), padding .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;
  background:var(--navy-900);
  opacity:0;transition:opacity .35s var(--ease);
  z-index:-1;
}
.site-header.is-scrolled{padding-block:10px; box-shadow:0 8px 30px -14px rgba(0,0,0,.5)}
.site-header.is-scrolled::before{opacity:.92; backdrop-filter:blur(10px)}

.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}

.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  border-radius:50%;
  box-shadow:0 0 0 1.5px rgba(255,255,255,.18);
}
.brand-name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.3rem;
  letter-spacing:.02em;
  color:var(--ink);
}

.main-nav ul{display:flex;gap:28px}
.main-nav a{
  font-size:.92rem;font-weight:500;color:var(--ink-dim);
  position:relative;padding-block:4px;
  transition:color .2s;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--copper-400);transition:width .25s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:100%}

.header-actions{display:none}

.nav-toggle{
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  width:38px;height:38px;
  border-radius:8px;
}
.nav-toggle span{
  width:20px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .3s var(--ease), opacity .3s var(--ease);
  margin-inline:auto;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width: 899px){
  .main-nav{
    position:fixed;inset:0;top:0;
    background:var(--navy-900);
    display:flex;align-items:center;justify-content:center;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
    z-index:-1;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .main-nav ul{flex-direction:column;text-align:center;gap:26px}
  .main-nav a{font-size:1.4rem;font-family:var(--font-display);text-transform:uppercase;letter-spacing:.03em}
}

@media (min-width: 900px){
  .nav-toggle{display:none}
  .header-actions{display:block}
}

/* ================================================================
   HERO
   ================================================================ */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;align-items:center;
  padding-block:120px 60px;
  background:
    radial-gradient(circle at 15% 20%, rgba(28,52,112,.55), transparent 55%),
    radial-gradient(circle at 85% 80%, rgba(201,138,75,.12), transparent 50%),
    linear-gradient(160deg, var(--navy-900), var(--black) 70%);
  overflow:clip;
}

.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-gear{position:absolute;fill:none;stroke:rgba(138,153,184,.14);stroke-width:1.4}
.hero-gear--big{
  width:min(70vw,700px);height:min(70vw,700px);
  top:-18%;right:-14%;
  animation:spin 90s linear infinite;
}
.hero-gear--small{
  width:min(40vw,380px);height:min(40vw,380px);
  bottom:-12%;left:-10%;
  stroke:rgba(201,138,75,.16);
  animation:spin-reverse 70s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes spin-reverse{to{transform:rotate(-360deg)}}

.hero-inner{
  position:relative;z-index:1;
  display:grid;gap:48px;
  align-items:center;
}

.hero-content h1{color:var(--paper)}
.hero-lead{
  color:var(--ink-dim);
  font-size:1.08rem;
  max-width:52ch;
  margin-block:18px 28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-actions .btn-outline{color:var(--ink);border-color:rgba(255,255,255,.3)}
.hero-actions .btn-outline:hover{background:var(--paper);color:var(--navy-900);border-color:var(--paper)}

.hero-stats{display:flex;gap:28px;flex-wrap:wrap}
.hero-stats dt{
  font-family:var(--font-display);font-size:2rem;font-weight:800;color:var(--copper-300);
  display:flex;align-items:baseline;gap:2px;
}
.hero-stats dd{font-size:.8rem;color:var(--ink-dim);letter-spacing:.03em}

.hero-visual{
  position:relative;
  max-width:420px;
  margin-inline:auto;
  animation:float 6s ease-in-out infinite;
  filter:drop-shadow(0 30px 50px rgba(0,0,0,.45));
}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-14px)}
}

.scroll-cue{
  position:absolute;bottom:28px;left:50%;transform:translateX(-50%);
  width:26px;height:42px;border:2px solid rgba(255,255,255,.35);border-radius:20px;
  display:none;
}
.scroll-cue span{
  position:absolute;top:8px;left:50%;transform:translateX(-50%);
  width:4px;height:8px;border-radius:2px;background:var(--copper-400);
  animation:scroll-cue 1.8s ease-in-out infinite;
}
@keyframes scroll-cue{
  0%{opacity:1;top:8px}
  70%{opacity:0;top:22px}
  100%{opacity:0;top:8px}
}

@media (min-width:700px){
  .scroll-cue{display:block}
}

@media (min-width:960px){
  .hero-inner{grid-template-columns:1.1fr .9fr; gap:40px}
  .hero-visual{margin-inline:0; animation-delay:.2s}
}

/* ================================================================
   REVEAL ON SCROLL
   ================================================================ */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible{opacity:1;transform:translateY(0)}
.hero-content .reveal.is-visible{transition-delay:calc(var(--i,0) * 90ms)}

/* ================================================================
   ABOUT
   ================================================================ */
.about{padding-block:96px; background:var(--paper)}
.about-inner{display:grid;gap:44px}
.about-visual img{
  border-radius:var(--radius-lg);
  max-width:380px;margin-inline:auto;
}
.about-content p{margin-bottom:18px;max-width:56ch}

.check-list{margin-block:20px 26px; display:grid; gap:12px}
.check-list li{
  position:relative;padding-left:30px;color:var(--navy-800);font-weight:500;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:3px;width:18px;height:18px;border-radius:50%;
  background:var(--navy-500);
}
.check-list li::after{
  content:"";position:absolute;left:5.5px;top:6.5px;width:7px;height:4px;
  border-left:2px solid var(--copper-300);border-bottom:2px solid var(--copper-300);
  transform:rotate(-45deg);
}

.address-card{
  display:flex;align-items:flex-start;gap:12px;
  background:var(--steel-100);border:1px solid var(--paper-dim);
  border-radius:var(--radius-md);padding:16px 18px;
  font-size:.92rem;color:var(--navy-700);
}
.address-card .icon-pin{width:20px;height:20px;fill:var(--copper-500);flex-shrink:0;margin-top:1px}

@media (min-width:900px){
  .about-inner{grid-template-columns:.85fr 1.15fr;align-items:center;gap:64px}
  .about-visual img{max-width:100%}
}

/* ================================================================
   SERVICES
   ================================================================ */
.services{padding-block:96px;background:var(--navy-900);position:relative}
.services::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 80% 0%, rgba(28,52,112,.4), transparent 55%);
}
.services .container{position:relative}
.services h2{color:var(--paper); margin-inline:auto}
.services > .container > .eyebrow{margin-inline:auto}

.services-grid{
  display:grid;gap:22px;margin-top:44px;
  grid-template-columns:1fr;
}
.service-card{
  background:linear-gradient(160deg, var(--navy-700), var(--navy-800));
  border:1px solid rgba(255,255,255,.06);
  border-radius:var(--radius-lg);
  padding:22px;
  transition:transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
}
.service-card:hover{
  transform:translateY(-8px);
  border-color:rgba(201,138,75,.4);
  box-shadow:0 20px 40px -20px rgba(0,0,0,.6);
}
.service-card-media{
  border-radius:var(--radius-md);overflow:hidden;margin-bottom:18px;
  aspect-ratio:1/1;
}
.service-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.service-card:hover .service-card-media img{transform:scale(1.06) rotate(-1deg)}
.service-card h3{color:var(--paper)}
.service-card p{color:var(--ink-dim);font-size:.94rem}

.services-note{margin-top:44px;color:var(--ink-dim)}
.services-note a{color:var(--copper-400);font-weight:600;border-bottom:1px solid currentColor}

@media (min-width:640px){
  .services-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1100px){
  .services-grid{grid-template-columns:repeat(4,1fr)}
}

/* ================================================================
   EXPERIENCE
   ================================================================ */
.experience{padding-block:88px;background:var(--paper)}
.experience h2{margin-inline:auto}

.experience-grid{
  display:grid;gap:28px;margin-top:44px;
  grid-template-columns:repeat(2,1fr);
  text-align:center;
}
.experience-stat{
  padding:28px 14px;
  border-radius:var(--radius-md);
  background:var(--steel-100);
  border:1px solid var(--paper-dim);
}
.experience-stat .counter,
.experience-stat .stat-suffix{
  font-family:var(--font-display);font-weight:800;font-size:clamp(2.1rem,6vw,2.8rem);
  color:var(--navy-600);
}
.experience-stat .stat-suffix{color:var(--copper-500)}
.experience-stat p{margin-top:6px;font-size:.88rem;color:var(--navy-700);font-weight:500}

@media (min-width:900px){
  .experience-grid{grid-template-columns:repeat(4,1fr)}
}

/* ================================================================
   CLIENTS — marquee
   ================================================================ */
.clients{padding-block:80px 0; background:var(--navy-900)}
.clients h2{color:var(--paper);margin-inline:auto}
.clients .container{padding-bottom:56px}

.marquee{
  overflow:hidden;
  border-block:1px solid rgba(255,255,255,.08);
  background:var(--navy-800);
  padding-block:26px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.marquee-track{
  display:flex;gap:54px;width:max-content;
  animation:marquee 26s linear infinite;
}
.marquee-track span{
  font-family:var(--font-mono);
  font-size:1rem;
  color:var(--steel-500);
  white-space:nowrap;
  letter-spacing:.02em;
}
@keyframes marquee{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}
.marquee:hover .marquee-track{animation-play-state:paused}

/* ================================================================
   CONTACT
   ================================================================ */
.contact{padding-block:96px;background:var(--paper)}
.contact-inner{display:grid;gap:48px}
.contact-info h2{margin-top:4px}
.contact-lead{margin-block:14px 26px;color:var(--navy-700)}

.contact-list{display:grid;gap:16px;margin-top:32px}
.contact-list li{display:flex;align-items:flex-start;gap:12px;font-size:.94rem;color:var(--navy-700)}
.contact-list svg{width:20px;height:20px;fill:var(--copper-500);flex-shrink:0;margin-top:2px}

.contact-form{
  background:var(--navy-900);
  border-radius:var(--radius-lg);
  padding:30px;
  display:grid;gap:16px;
}
.form-row{display:grid;gap:6px}
.form-row label{font-size:.82rem;color:var(--ink-dim);font-weight:500}
.form-row input,.form-row textarea{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
  border-radius:10px;
  padding:12px 14px;
  color:var(--ink);
  transition:border-color .2s, background .2s;
  resize:vertical;
}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border-color:var(--copper-400);background:rgba(255,255,255,.08);
}
.form-note{font-size:.82rem;color:var(--copper-300);min-height:1em}

@media (min-width:960px){
  .contact-inner{grid-template-columns:1fr 1fr;gap:64px;align-items:start}
}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer{background:var(--black);padding-block:52px 30px}
.footer-inner{display:grid;gap:22px;text-align:center;justify-items:center}
.footer-tagline{color:var(--ink-dim);font-size:.9rem;max-width:36ch}
.footer-nav{display:flex;flex-wrap:wrap;gap:20px;justify-content:center}
.footer-nav a{font-size:.88rem;color:var(--ink-dim)}
.footer-nav a:hover{color:var(--copper-400)}
.footer-copy,.footer-credit{font-size:.78rem;color:var(--steel-700)}
.footer-credit a{color:var(--copper-500);font-weight:600}

@media (min-width:700px){
  .footer-inner{grid-template-columns:auto 1fr auto;text-align:left;justify-items:start}
  .footer-nav{grid-column:1/-1}
  .footer-copy,.footer-credit{grid-column:1/-1}
}

/* ================================================================
   WHATSAPP FLOAT BUTTON
   ================================================================ */
.whatsapp-float{
  position:fixed;right:20px;bottom:20px;z-index:90;
  width:58px;height:58px;border-radius:50%;
  background:linear-gradient(135deg,#25d366,#1eb355);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 30px -8px rgba(37,211,102,.6);
  transition:transform .25s var(--ease);
}
.whatsapp-float:hover{transform:scale(1.08)}
.whatsapp-float svg{width:28px;height:28px;fill:#06230f}
.whatsapp-float-ring{
  position:absolute;inset:0;border-radius:50%;
  border:2px solid rgba(37,211,102,.6);
  animation:ping 2.4s cubic-bezier(0,.6,.4,1) infinite;
}
@keyframes ping{
  0%{transform:scale(1);opacity:.7}
  100%{transform:scale(1.9);opacity:0}
}

/* ================================================================
   UTILITIES
   ================================================================ */
::selection{background:var(--copper-300);color:var(--navy-900)}

::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--navy-900)}
::-webkit-scrollbar-thumb{background:var(--navy-400);border-radius:10px}