/* ============================================================
   LUCK ACESSÓRIOS — 30 anos de som automotivo
   Aesthetic: dark, electric, high-energy "car audio"
   Brand blue #0092df → cyan glow, condensed display type
   ============================================================ */

:root {
  /* paleta */
  --bg:        #05070d;
  --bg-2:      #090d18;
  --surface:   #0c1120;
  --surface-2: #111830;
  --line:      rgba(120, 170, 255, .12);
  --line-2:    rgba(120, 170, 255, .22);

  --blue:      #0092df;
  --blue-hi:   #2bb3ff;
  --cyan:      #19e6ff;
  --ink:       #eaf2ff;
  --muted:     #8ea3c8;
  --muted-2:   #5d6f93;

  --grad: linear-gradient(115deg, var(--blue) 0%, var(--cyan) 100%);
  --glow: 0 0 40px rgba(43,179,255,.45);

  --display: "Anton", system-ui, sans-serif;
  --body:    "Sora", system-ui, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1240px;
  --r: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--blue-hi); }

::selection { background: var(--blue); color: #001018; }

/* grão global */
.grain {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  opacity: .04; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- BOTÕES ---------- */
.btn {
  --pad: .85em 1.6em;
  display: inline-flex; align-items: center; gap: .55em;
  padding: var(--pad);
  font-family: var(--body);
  font-weight: 700; font-size: .92rem; letter-spacing: .02em;
  border-radius: 100px; cursor: pointer; border: 1px solid transparent;
  transition: transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .3s, background .3s, color .3s;
  position: relative; white-space: nowrap;
}
.btn--lg { --pad: 1.05em 2.1em; font-size: 1rem; }
.btn--solid {
  background: var(--grad); color: #00121f;
  box-shadow: 0 10px 30px -8px rgba(25,230,255,.5);
}
.btn--solid:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -8px rgba(25,230,255,.7); }
.btn--ghost {
  background: transparent; color: var(--ink);
  border-color: var(--line-2);
}
.btn--ghost:hover { border-color: var(--blue-hi); color: var(--blue-hi); transform: translateY(-3px); box-shadow: var(--glow); }

/* ---------- NAV ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background .4s, border-color .4s, backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(5,7,13,.78);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex; align-items: center; gap: 1.5rem;
}
.nav__logo { height: 38px; width: auto; filter: drop-shadow(0 2px 8px rgba(0,0,0,.6)); }
.nav__links { display: flex; gap: 2rem; margin-left: auto; }
.nav__links a {
  font-size: .9rem; font-weight: 500; color: var(--muted);
  position: relative; transition: color .25s; letter-spacing: .01em;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--grad); transition: width .3s;
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { width: 100%; }
.nav__cta { padding: .65em 1.3em; font-size: .85rem; }
.nav__cta svg { transform: rotate(180deg); }

.nav__burger { display: none; background: none; border: 0; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav__burger span { width: 26px; height: 2px; background: var(--ink); transition: .3s; display: block; }
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile {
  display: none; flex-direction: column; gap: .3rem;
  padding: 0 1.5rem; max-height: 0; overflow: hidden;
  background: rgba(8,11,22,.98); backdrop-filter: blur(14px);
  transition: max-height .4s ease, padding .4s;
  border-bottom: 1px solid var(--line);
}
.nav__mobile.is-open { max-height: 360px; padding: 1rem 1.5rem 1.5rem; }
.nav__mobile a { padding: .7rem 0; font-weight: 600; color: var(--ink); border-bottom: 1px solid var(--line); }
.nav__mobile .btn { margin-top: .8rem; justify-content: center; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 7rem 1.5rem 4rem; overflow: hidden;
  background: radial-gradient(120% 90% at 80% -10%, #0a1730 0%, var(--bg) 55%);
}
.hero__glow {
  position: absolute; top: -20%; right: -10%; width: 70vw; height: 70vw;
  background: radial-gradient(circle, rgba(0,146,223,.35), transparent 60%);
  filter: blur(40px); z-index: 0; animation: float 14s ease-in-out infinite;
}
@keyframes float { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-4%,5%)} }
.hero__grid {
  position: absolute; inset: 0; z-index: 0; opacity: .5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 30%, transparent 75%);
}

/* equalizador animado */
.eq {
  position: absolute; bottom: 0; left: 0; right: 0; height: 38vh; z-index: 0;
  display: flex; align-items: flex-end; gap: 6px; padding: 0 2vw;
  opacity: .22; pointer-events: none;
}
.eq span {
  flex: 1; min-width: 4px; border-radius: 6px 6px 0 0;
  background: var(--grad);
  animation: bounce 1.4s ease-in-out infinite;
  transform-origin: bottom;
}
.eq span:nth-child(odd)  { animation-duration: 1.1s; }
.eq span:nth-child(3n)   { animation-duration: 1.7s; }
.eq span:nth-child(4n)   { animation-duration: .9s;  }
.eq span:nth-child(5n)   { animation-duration: 1.9s; }
.eq span:nth-child(1){--h:30%}  .eq span:nth-child(2){--h:60%}  .eq span:nth-child(3){--h:45%}
.eq span:nth-child(4){--h:80%}  .eq span:nth-child(5){--h:35%}  .eq span:nth-child(6){--h:70%}
.eq span:nth-child(7){--h:50%}  .eq span:nth-child(8){--h:90%}  .eq span:nth-child(9){--h:40%}
.eq span:nth-child(10){--h:65%} .eq span:nth-child(11){--h:55%} .eq span:nth-child(12){--h:85%}
.eq span:nth-child(odd){--h2:25%} .eq span:nth-child(even){--h2:15%}
@keyframes bounce { 0%,100%{transform:scaleY(var(--h2,.2))} 50%{transform:scaleY(var(--h,.7))} }

.hero__inner { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero__kicker {
  font-family: var(--mono); font-size: .85rem; letter-spacing: .12em;
  color: var(--cyan); text-transform: uppercase; margin-bottom: 1.4rem;
}
.hero__title {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(3.2rem, 11vw, 9.5rem); line-height: .92;
  letter-spacing: -.01em; text-transform: uppercase;
}
.hero__title span { display: block; }
.hero__title--accent {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent; filter: drop-shadow(0 0 30px rgba(25,230,255,.35));
}
.hero__lead {
  margin: 1.8rem 0 2.4rem; max-width: 560px;
  font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--muted); font-weight: 300;
}
.hero__lead strong { color: var(--ink); font-weight: 700; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero__stats {
  display: flex; flex-wrap: wrap; gap: clamp(2rem, 6vw, 5rem);
  margin-top: 3.5rem; padding-top: 2.5rem; border-top: 1px solid var(--line);
}
.stat { display: flex; flex-direction: column; }
.stat__num {
  font-family: var(--display); font-size: clamp(2.6rem, 6vw, 4rem); line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat__num::after { content: ""; }
.stat__num--plus::after { content: "+"; -webkit-text-fill-color: var(--blue-hi); }
.stat__lbl { font-size: .82rem; color: var(--muted-2); letter-spacing: .04em; text-transform: uppercase; margin-top: .4rem; }

.hero__scroll {
  position: absolute; bottom: 1.5rem; left: 50%; transform: translateX(-50%); z-index: 2;
  width: 26px; height: 42px; border: 2px solid var(--line-2); border-radius: 100px;
  display: flex; justify-content: center; padding-top: 7px;
}
.hero__scroll span { width: 4px; height: 8px; border-radius: 4px; background: var(--cyan); animation: scroll 1.6s infinite; }
@keyframes scroll { 0%{opacity:0;transform:translateY(-4px)} 50%{opacity:1} 100%{opacity:0;transform:translateY(12px)} }

/* ============================================================
   SECTION HEADS
   ============================================================ */
.section-head { max-width: var(--maxw); margin: 0 auto 3rem; padding: 0 1.5rem; }
.section-head--center { text-align: center; }
.section-head--center .section-head__sub { margin-left: auto; margin-right: auto; }
.section-head__tag {
  font-family: var(--mono); font-size: .8rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--cyan); display: inline-block; margin-bottom: 1rem;
}
.section-head h2 {
  font-family: var(--display); font-weight: 400; text-transform: uppercase;
  font-size: clamp(2.2rem, 6vw, 4.2rem); line-height: .98; letter-spacing: -.01em;
}
.section-head__sub { max-width: 560px; color: var(--muted); margin-top: 1.1rem; font-weight: 300; }

/* ============================================================
   MARCAS (marquee)
   ============================================================ */
.brands { padding: 6rem 0; border-top: 1px solid var(--line); background: var(--bg-2); }
.brands__marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.brands__track { display: flex; gap: 2.5rem; width: max-content; animation: marquee 26s linear infinite; }
.brands:hover .brands__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.brand {
  flex: 0 0 auto; height: 110px; width: 220px;
  display: grid; place-items: center; padding: 1.5rem 2rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.brand:hover { border-color: var(--blue); transform: translateY(-4px); box-shadow: var(--glow); }
.brand img {
  max-height: 44px; max-width: 160px; width: auto; height: auto; object-fit: contain;
  /* monocromático branco por padrão (mural coeso no tema dark) */
  filter: brightness(0) invert(1); opacity: .58;
  transition: filter .4s ease, opacity .4s ease, transform .4s ease;
}
.brand:hover img { filter: none; opacity: 1; transform: scale(1.05); } /* revela a cor da marca */

/* ============================================================
   SOBRE
   ============================================================ */
.about {
  max-width: var(--maxw); margin: 0 auto; padding: 7rem 1.5rem;
  display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); align-items: center;
}
.about__media { position: relative; }
.about__media img {
  width: 100%; border-radius: var(--r); aspect-ratio: 4/3; object-fit: cover;
  border: 1px solid var(--line-2);
}
.about__media::before {
  content: ""; position: absolute; inset: -1px; border-radius: var(--r); padding: 1px;
  background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: .6; pointer-events: none;
}
.about__badge {
  position: absolute; bottom: -28px; right: -18px;
  background: var(--surface-2); border: 1px solid var(--line-2); border-radius: var(--r);
  padding: 1rem 1.4rem; display: flex; align-items: center; gap: .8rem;
  box-shadow: 0 20px 50px -15px rgba(0,0,0,.8);
}
.about__badge-num { font-family: var(--display); font-size: 3.4rem; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.about__badge-txt { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.about__content h2 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: clamp(2rem, 5vw, 3.6rem); line-height: 1; margin-bottom: 1.4rem; }
.about__content p { color: var(--muted); margin-bottom: 1.2rem; font-weight: 300; max-width: 52ch; }
.about__content p strong { color: var(--ink); font-weight: 600; }
.about__content .btn { margin-top: .8rem; }

/* ============================================================
   DIFERENCIAIS
   ============================================================ */
.diff { padding: 5rem 0 7rem; }
.diff__grid {
  max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 2.5rem 2rem; position: relative; overflow: hidden;
  transition: border-color .35s, transform .35s;
}
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-2); }
.card:hover::before { transform: scaleX(1); }
.card__icon {
  width: 58px; height: 58px; border-radius: 14px; display: grid; place-items: center;
  background: rgba(0,146,223,.12); border: 1px solid var(--line-2); color: var(--blue-hi);
  margin-bottom: 1.5rem;
}
.card__icon svg { width: 30px; height: 30px; }
.card h3 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: 1.6rem; letter-spacing: .01em; margin-bottom: .7rem; }
.card p { color: var(--muted); font-weight: 300; font-size: .98rem; }

/* ============================================================
   UNIDADES
   ============================================================ */
.units { padding: 4rem 0 7rem; background: var(--bg-2); border-top: 1px solid var(--line); }
.units__grid {
  max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.unit {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden; transition: border-color .35s, transform .35s, box-shadow .35s;
}
.unit:hover { transform: translateY(-6px); border-color: var(--blue); box-shadow: 0 24px 60px -24px rgba(0,146,223,.6); }
.unit__photo {
  position: relative; height: 210px; padding: 1.5rem;
  display: flex; flex-direction: column; justify-content: flex-end;
  background-image:
    linear-gradient(180deg, rgba(5,7,13,.15) 0%, rgba(5,7,13,.55) 50%, rgba(5,7,13,.95) 100%),
    var(--photo, var(--surface-2));
  background-size: cover; background-position: center;
}
.unit__uf {
  position: absolute; top: 1.1rem; right: 1.1rem;
  font-family: var(--mono); font-size: .72rem; font-weight: 700; letter-spacing: .1em;
  background: rgba(5,7,13,.6); border: 1px solid var(--line-2); color: var(--cyan);
  padding: .3rem .6rem; border-radius: 100px; backdrop-filter: blur(6px);
}
.unit__city { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: 1.9rem; line-height: .95; letter-spacing: .01em; text-shadow: 0 4px 20px rgba(0,0,0,.8); }
.unit__contacts { list-style: none; padding: .6rem; }
.unit__contacts a {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: .2rem .8rem;
  padding: .9rem 1rem; border-radius: 12px; transition: background .25s;
}
.unit__contacts a:hover { background: rgba(0,146,223,.08); }
.unit__role { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted-2); grid-column: 1; }
.unit__num { font-size: 1.05rem; font-weight: 600; color: var(--ink); grid-column: 1; }
.unit__wa {
  grid-row: 1 / span 2; grid-column: 2; align-self: center;
  font-family: var(--mono); font-size: .68rem; font-weight: 700; letter-spacing: .05em;
  color: #06200f; background: #25d366; padding: .4rem .7rem; border-radius: 100px;
  display: inline-flex; align-items: center; gap: .3rem;
}
.unit__contacts a:hover .unit__wa { box-shadow: 0 0 18px rgba(37,211,102,.5); }

/* ============================================================
   CTA FINAL
   ============================================================ */
.cta { padding: 7rem 1.5rem; }
.cta__inner {
  max-width: 900px; margin: 0 auto; text-align: center;
  background:
    radial-gradient(80% 130% at 50% 0%, rgba(0,146,223,.22), transparent 60%),
    var(--surface);
  border: 1px solid var(--line-2); border-radius: 28px;
  padding: clamp(3rem, 7vw, 5rem) 2rem; position: relative; overflow: hidden;
}
.cta__inner::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 40px 40px; opacity: .4;
  mask-image: radial-gradient(60% 60% at 50% 50%, #000, transparent);
}
.cta__inner h2 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: clamp(2rem, 6vw, 4rem); line-height: 1; }
.cta__inner p { color: var(--muted); margin: 1.2rem auto 2.2rem; max-width: 460px; font-weight: 300; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--line); background: var(--bg); }
.footer__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 4rem 1.5rem 3rem;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 2.5rem;
}
.footer__brand img { height: 42px; margin-bottom: 1.2rem; }
.footer__brand p { color: var(--muted-2); font-size: .92rem; font-weight: 300; max-width: 38ch; }
.footer__col h4 { font-family: var(--mono); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--cyan); margin-bottom: 1.2rem; }
.footer__col a, .footer__col span { display: block; color: var(--muted); font-size: .92rem; padding: .35rem 0; transition: color .25s; }
.footer__col a:hover { color: var(--blue-hi); }
.footer__bar {
  max-width: var(--maxw); margin: 0 auto; padding: 1.5rem; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-size: .82rem; color: var(--muted-2);
}
.footer__sound em { color: var(--blue-hi); }

/* WhatsApp flutuante */
.wa-float {
  position: fixed; bottom: 1.6rem; right: 1.6rem; z-index: 900;
  width: 58px; height: 58px; border-radius: 50%;
  background: #25d366; color: #06200f;
  display: grid; place-items: center;
  box-shadow: 0 10px 30px -6px rgba(37,211,102,.6);
  transition: transform .3s; animation: waPulse 2.6s infinite;
}
.wa-float:hover { transform: scale(1.1); }
@keyframes waPulse { 0%{box-shadow:0 10px 30px -6px rgba(37,211,102,.6),0 0 0 0 rgba(37,211,102,.5)} 70%{box-shadow:0 10px 30px -6px rgba(37,211,102,.6),0 0 0 16px rgba(37,211,102,0)} 100%{box-shadow:0 10px 30px -6px rgba(37,211,102,.6),0 0 0 0 rgba(37,211,102,0)} }

/* ============================================================
   SUBWOOFER 3D (Three.js) + barra de progresso
   ============================================================ */
.hero__viz {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: 56%; z-index: 1; pointer-events: none;
  mask-image: radial-gradient(80% 80% at 60% 45%, #000 55%, transparent 85%);
}
.hero__viz canvas { width: 100% !important; height: 100% !important; display: block; }

.progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 1100;
  background: var(--grad); transform: scaleX(0); transform-origin: 0 50%;
}

/* ---------- botão de som / batida ---------- */
.sound-toggle {
  display: inline-flex; align-items: center; gap: .65rem;
  padding: .8em 1.3em; border-radius: 100px; cursor: pointer;
  background: rgba(255,255,255,.03); border: 1px solid var(--line-2);
  color: var(--muted); font-family: var(--body); font-weight: 600; font-size: .9rem;
  letter-spacing: .02em; transition: color .25s, border-color .25s, box-shadow .3s, background .25s;
}
.sound-toggle:hover { color: var(--ink); border-color: var(--blue-hi); }
.sound-toggle.is-on {
  color: var(--ink); border-color: var(--blue); background: rgba(0,146,223,.1);
  box-shadow: var(--glow);
}
.sound-toggle__bars { display: inline-flex; align-items: flex-end; gap: 3px; height: 18px; }
.sound-toggle__bars i {
  width: 3px; height: 6px; border-radius: 3px; background: var(--grad);
  transition: height .2s; opacity: .8;
}
.sound-toggle.is-on .sound-toggle__bars i { animation: sbar .9s ease-in-out infinite; opacity: 1; }
.sound-toggle.is-on .sound-toggle__bars i:nth-child(1) { animation-duration: 1.1s; }
.sound-toggle.is-on .sound-toggle__bars i:nth-child(2) { animation-duration: .7s;  }
.sound-toggle.is-on .sound-toggle__bars i:nth-child(3) { animation-duration: 1.3s; }
.sound-toggle.is-on .sound-toggle__bars i:nth-child(4) { animation-duration: .8s;  }
.sound-toggle.is-on .sound-toggle__bars i:nth-child(5) { animation-duration: 1s;   }
@keyframes sbar { 0%,100% { height: 5px; } 50% { height: 18px; } }

/* ---------- ondas de choque da batida ---------- */
.shock { position: absolute; inset: 0; pointer-events: none; overflow: visible; }
.shock__ring {
  position: absolute; left: 58%; top: 47%;
  width: var(--size, 200px); height: var(--size, 200px);
  margin: calc(var(--size, 200px) / -2) 0 0 calc(var(--size, 200px) / -2);
  border-radius: 50%;
  border: 2px solid rgba(43,179,255,.9);
  box-shadow: 0 0 30px rgba(25,230,255,.5), inset 0 0 24px rgba(25,230,255,.25);
  opacity: 0; transform: scale(.2);
  animation: shockwave .9s cubic-bezier(.15,.7,.3,1) forwards;
}
@keyframes shockwave {
  0%   { opacity: .6;  transform: scale(.18); }
  60%  { opacity: .28; }
  100% { opacity: 0;   transform: scale(1); }
}

/* ---------- flashes da batida ---------- */
.eq { transition: opacity .12s ease, transform .12s ease; transform-origin: bottom; }
body.audio-on .eq { opacity: .34; }
body.beat .eq { opacity: .62; transform: scaleY(1.14); }

.hero__glow { transition: filter .14s ease; }
body.beat .hero__glow { filter: brightness(1.35); }

.hero__title--accent { transition: filter .13s ease; }
body.beat .hero__title--accent { filter: drop-shadow(0 0 44px rgba(25,230,255,.6)) brightness(1.1); }
.hero__title--accent.beat-strong { filter: drop-shadow(0 0 64px rgba(25,230,255,.85)) brightness(1.22); }

/* perspectiva para o tilt 3D dos cards */
.units__grid { perspective: 1200px; }
.unit { transform-style: preserve-3d; will-change: transform; }

/* ============================================================
   REVEAL ON SCROLL
   ============================================================ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2,.8,.2,1) var(--d,0s), transform .8s cubic-bezier(.2,.8,.2,1) var(--d,0s); }
.reveal.is-in { opacity: 1; transform: none; }
/* sem JS: mostra tudo (acessibilidade / crawlers) */
html:not(.js) .reveal { opacity: 1; transform: none; }
/* com GSAP no comando: ele controla, sem transição CSS concorrente */
html.gsap .reveal { transition: none; }

/* ============================================================
   RESPONSIVO
   ============================================================ */
@media (max-width: 920px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: flex; margin-left: auto; }
  .nav__mobile { display: flex; }
  .about { grid-template-columns: 1fr; }
  .about__media { max-width: 460px; }
  .diff__grid, .units__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 920px) {
  .hero__viz { width: 100%; opacity: .42; mask-image: radial-gradient(75% 55% at 60% 30%, #000 50%, transparent 82%); }
}
@media (max-width: 560px) {
  .hero { padding-top: 6rem; }
  .hero__stats { gap: 1.8rem; }
  .hero__viz { opacity: .3; }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__bar { flex-direction: column; text-align: center; }
}

/* Observação: por decisão do cliente, a animação é exibida sempre (não
   desligamos com prefers-reduced-motion). Mantido apenas o essencial. */