/* ============================================================
   Tacto Audio — landing
   Paleta herdada dos plugins (porcelana + ouro + teal).
   ============================================================ */
:root{
  --paper:#F6F2E9;
  --paper-2:#F1EBDE;
  --panel:#F4EFE6;
  --ink:#1B160F;
  --ink-2:#5C5346;
  --ink-3:#8A7F6D;
  --gold:#B4862B;
  --gold-hi:#E0A628;
  --gold-lo:#E7C25A;
  --teal:#1B8C7A;
  --teal-dk:#12695B;
  --line:rgba(27,22,15,.12);
  --line-2:rgba(27,22,15,.06);
  --shadow: 0 22px 60px -24px rgba(27,22,15,.30);
  --maxw: 1180px;
  --ease: cubic-bezier(.22,.61,.36,1);        /* ease-out-quart-ish */
  --ease-expo: cubic-bezier(.16,1,.3,1);
  --font: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
  /* z-index scale */
  --z-nav: 50; --z-sticky: 40; --z-glow:-1;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} }
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--font); font-weight:420; line-height:1.55;
  font-size:clamp(16px,1.05vw,18px);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3{ margin:0; font-weight:700; letter-spacing:-.02em; line-height:1.02; text-wrap:balance; }
p{ margin:0; text-wrap:pretty; }
a{ color:inherit; text-decoration:none }
img{ max-width:100% }
.wrap{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:clamp(20px,5vw,40px) }
.muted{ color:var(--ink-2) }
.tnum{ font-variant-numeric:tabular-nums }

/* grão sutil de papel no fundo */
body::before{
  content:""; position:fixed; inset:0; z-index:var(--z-glow); pointer-events:none;
  background:
    radial-gradient(120% 90% at 80% -10%, rgba(224,166,40,.10), transparent 60%),
    radial-gradient(80% 70% at -10% 110%, rgba(27,140,122,.07), transparent 55%);
}

/* ---------- nav ---------- */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:var(--z-nav);
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:14px clamp(20px,5vw,40px);
  transition:background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{ background:color-mix(in srgb, var(--paper) 82%, transparent); backdrop-filter:saturate(1.4) blur(12px); border-bottom-color:var(--line) }
.brand{ display:flex; align-items:center; gap:10px; font-size:20px; letter-spacing:-.01em }
.brand b{ font-weight:800 }
.brand .t{
  width:28px; height:28px; border-radius:8px; display:grid; place-items:center;
  color:#3A2B0A; font-weight:800; font-size:16px;
  background:linear-gradient(135deg,var(--gold-lo),var(--gold));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.45), 0 2px 8px -2px rgba(180,134,43,.6);
}
.nav-links{ display:flex; align-items:center; gap:26px; font-size:15px; font-weight:520 }
.nav-links a{ color:var(--ink-2); transition:color .2s }
.nav-links a:hover{ color:var(--ink) }
@media (max-width:720px){ .nav-links a:not(.btn){ display:none } }

.btn{
  display:inline-flex; align-items:center; gap:8px; font-weight:640; font-size:15px;
  padding:11px 20px; border-radius:11px; cursor:pointer; border:1px solid transparent;
  transition:transform .18s var(--ease), box-shadow .25s var(--ease), background .25s;
  will-change:transform;
}
.btn-gold{
  color:#2b2008; background:linear-gradient(135deg,var(--gold-hi),var(--gold));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.4), 0 8px 22px -10px rgba(180,134,43,.9);
}
.btn-gold:hover{ transform:translateY(-2px); box-shadow: inset 0 1px 0 rgba(255,255,255,.5), 0 14px 30px -10px rgba(180,134,43,1) }
.btn-ghost{ border-color:var(--line); color:var(--ink); background:color-mix(in srgb,var(--paper) 60%,transparent) }
.btn-ghost:hover{ transform:translateY(-2px); border-color:color-mix(in srgb,var(--gold) 50%,var(--line)) }
.btn-lg{ padding:16px 30px; font-size:17px; border-radius:13px }

/* ---------- hero ---------- */
.hero{ position:relative; padding:150px 0 90px; }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(24px,4vw,64px); align-items:center }
@media (max-width:900px){ .hero-grid{ grid-template-columns:1fr; gap:36px } }
.eyebrow{ display:inline-flex; align-items:center; gap:9px; font-size:13.5px; font-weight:640; color:var(--teal-dk); }
.eyebrow .dot{ width:7px; height:7px; border-radius:50%; background:var(--teal); box-shadow:0 0 0 4px color-mix(in srgb,var(--teal) 18%,transparent) }
.hero h1{ font-size:clamp(44px,7vw,88px); margin:20px 0 22px; }
.hero h1 .warm{ color:var(--gold); font-style:italic; font-weight:600 }
.hero-sub{ font-size:clamp(17px,1.5vw,21px); color:var(--ink-2); max-width:44ch; margin-bottom:34px }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; align-items:center }
.hero-note{ font-size:14px; color:var(--ink-3); margin-left:2px }
.hero-stage{ position:relative; display:grid; place-items:center; min-height:360px }
.hero-stage .glow{ position:absolute; width:120%; height:120%; border-radius:50%;
  background:radial-gradient(circle, rgba(224,166,40,.22), transparent 62%); filter:blur(10px) }

/* palco escuro (linguagem UJAM): o display vira um mundo escuro na cor do
   plugin, com o objeto herói brilhando. Deck de knobs segue porcelana. */
.display-stage{ --accent:#E0A628; position:relative; overflow:hidden;
  background:linear-gradient(180deg, color-mix(in srgb,var(--accent) 20%, #17110a), #0d0904) !important;
  border-color:rgba(0,0,0,.45) !important; box-shadow:inset 0 2px 10px rgba(0,0,0,.5) !important; }
.display-stage::before{ content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(46% 60% at 50% 46%, color-mix(in srgb,var(--accent) 42%, transparent), transparent 72%); }
.display-stage .cap{ color:color-mix(in srgb,var(--accent) 62%, #fff) !important }
.display-stage .cap.r{ color:rgba(255,255,255,.5) !important }
.display-stage svg circle[fill^="url"]{ filter:drop-shadow(0 0 13px color-mix(in srgb,var(--accent) 65%, transparent)) }
.display-stage .disp-c{ position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); width:116px; height:116px;
  filter:drop-shadow(0 0 14px color-mix(in srgb,var(--accent,var(--gold-hi)) 42%, transparent)) }
.display-stage .disp-f{ position:absolute; inset:0; width:100%; height:100%;
  filter:drop-shadow(0 0 6px color-mix(in srgb,var(--accent,var(--gold-hi)) 40%, transparent)) }

/* ---------- painel de plugin (CSS) ---------- */
.panel{
  --pw: 400px;
  width:var(--pw); max-width:92vw;
  /* tela escura (padding-box) dentro de moldura de metal escovado (border-box) */
  background:
    linear-gradient(180deg,#2A2114,#120D07) padding-box,
    linear-gradient(160deg,#EDE5D2,#B4AA94) border-box;
  border:9px solid transparent;
  border-radius:22px; padding:18px 20px 20px;
  box-shadow:0 34px 74px -32px rgba(0,0,0,.72), inset 0 0 0 1px rgba(0,0,0,.5);
  position:relative; overflow:hidden;
}
.panel::before{ content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(58% 52% at 50% 48%, color-mix(in srgb,var(--accent,var(--gold-hi)) 15%, transparent), transparent 72%); }
.panel > *{ position:relative }
.panel-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:16px }
.panel-name{ display:flex; align-items:center; gap:10px; font-size:19px; letter-spacing:-.01em }
.panel-name .t{ width:26px;height:26px;border-radius:7px;display:grid;place-items:center;color:#3A2B0A;font-weight:800;font-size:15px;
  background:linear-gradient(135deg,var(--gold-lo),var(--gold)); box-shadow:inset 0 1px 0 rgba(255,255,255,.45) }
.panel-name{ color:#F4EFE6 }
.panel-name b{ font-weight:800 } .panel-name span{ font-weight:430; color:rgba(244,239,230,.58) }
.panel-preset{ font-size:12.5px; font-weight:560; color:var(--gold-lo); border:1px solid color-mix(in srgb,var(--gold-hi) 32%, transparent); border-radius:8px; padding:6px 12px; background:rgba(255,255,255,.05) }
.panel-display{
  height:130px; border-radius:12px; background:
    linear-gradient(180deg,#F7F3EA,#F1EBDD);
  border:1px solid var(--line-2); position:relative; overflow:hidden; margin-bottom:20px;
  box-shadow: inset 0 1px 3px rgba(27,22,15,.06);
}
.panel-display svg{ position:absolute; inset:0; width:100%; height:100% }
.panel-display .cap{ position:absolute; top:9px; left:12px; font-size:10.5px; font-weight:700; letter-spacing:.16em; color:var(--gold); }
.panel-display .cap.r{ left:auto; right:12px; color:var(--ink-3) }
.knob-row{ display:flex; justify-content:space-between; gap:8px }
.knob-cell{ display:flex; flex-direction:column; align-items:center; gap:9px; flex:1 }
.knob-label{ font-size:11.5px; font-weight:680; color:#EEE6D2 }

.knob{
  --v:.5; --size:60px; --sweep:270deg; --start:225deg;
  width:var(--size); height:var(--size); position:relative; border-radius:50%;
}
/* arco de valor (ouro) + trilha */
.knob::before{
  content:""; position:absolute; inset:0; border-radius:50%;
  background:conic-gradient(from var(--start),
    var(--accent,var(--gold-hi)) 0 calc(var(--v) * var(--sweep)),
    rgba(255,255,255,.10) calc(var(--v) * var(--sweep)) var(--sweep),
    transparent var(--sweep) 360deg);
  -webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 3.5px),#000 calc(100% - 3.5px));
          mask:radial-gradient(farthest-side,transparent calc(100% - 3.5px),#000 calc(100% - 3.5px));
  filter:drop-shadow(0 0 4px color-mix(in srgb,var(--accent,var(--gold-hi)) 60%, transparent)); /* bloom */
  transition:--v .5s var(--ease);
}
/* corpo escuro dimensional (knob UJAM) */
.knob::after{
  content:""; position:absolute; inset:6px; border-radius:50%;
  background:radial-gradient(120% 120% at 50% 30%, #423B2E, #16120B);
  border:1px solid rgba(0,0,0,.55);
  box-shadow: 0 4px 8px -3px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.08);
}
.knob-val{ position:absolute; inset:0; display:grid; place-items:center; font-size:14px; font-weight:700; z-index:2; color:#EEE6D2 }
.knob-ptr{ position:absolute; inset:0; z-index:2 }
.knob-ptr::before{
  content:""; position:absolute; left:50%; top:15%; width:2.4px; height:24%;
  background:var(--accent,var(--gold-hi)); border-radius:2px; transform-origin:50% 168%;
  box-shadow:0 0 5px color-mix(in srgb,var(--accent,var(--gold-hi)) 70%, transparent);
  transform:translateX(-50%) rotate(calc(var(--v) * var(--sweep) - (var(--sweep)/2)));
  transition:transform .5s var(--ease);
}
/* Firefox não interpola @property --v: garante o ponteiro suave mesmo assim */

/* ---------- seção presa (scrollytelling) ---------- */
.story{ position:relative }
.story-track{ position:relative }
.story-pin{
  position:sticky; top:0; height:100vh; display:grid; grid-template-columns:1fr 1fr;
  align-items:center; gap:clamp(24px,5vw,72px);
}
@media (max-width:900px){ .story-pin{ grid-template-columns:1fr; text-align:center; justify-items:center } }
.story-panel{ display:grid; place-items:center; position:relative }
.story-panel .glow{ position:absolute; width:110%; height:110%; border-radius:50%;
  background:radial-gradient(circle, rgba(224,166,40,.20), transparent 60%); filter:blur(8px); transition:opacity .6s }
.story-copy{ max-width:34ch }
@media (max-width:900px){ .story-copy{ max-width:52ch } }
.story-stage{ position:relative }
.story-item{
  position:absolute; inset:0; opacity:0; transform:translateY(14px);
  transition:opacity .5s var(--ease), transform .5s var(--ease); pointer-events:none;
}
.story-item.active{ opacity:1; transform:none; position:relative; pointer-events:auto }
.story-kicker{ font-size:13.5px; font-weight:680; color:var(--teal-dk); margin-bottom:14px }
.story-item h2{ font-size:clamp(30px,3.6vw,46px); margin-bottom:16px }
.story-item p{ font-size:clamp(16px,1.4vw,19px); color:var(--ink-2) }
.story-progress{ display:flex; gap:8px; margin-top:30px }
@media (max-width:900px){ .story-progress{ justify-content:center } }
.story-progress i{ height:4px; width:34px; border-radius:3px; background:var(--line); transition:background .4s }
.story-progress i.on{ background:var(--gold) }

/* ---------- seção padrão ---------- */
.section{ padding:clamp(80px,11vw,150px) 0 }
.section-head{ max-width:42ch; margin-bottom:clamp(36px,5vw,58px) }
.section-head h2{ font-size:clamp(32px,4.4vw,54px); margin-bottom:16px }
.section-head p{ font-size:clamp(16px,1.4vw,19px); color:var(--ink-2) }
.section.alt{ background:linear-gradient(180deg,transparent, color-mix(in srgb,var(--paper-2) 70%, transparent) 12% 88%, transparent) }

/* ---------- vídeo ---------- */
.video-frame{
  position:relative; border-radius:20px; overflow:hidden; border:1px solid var(--line);
  background:linear-gradient(160deg,#241d15,#0f0b06); aspect-ratio:16/9;
  box-shadow:var(--shadow); display:grid; place-items:center;
}
.video-frame::after{ content:""; position:absolute; inset:0; background:
  radial-gradient(70% 90% at 50% 40%, rgba(224,166,40,.16), transparent 70%) }
.video-play{ position:relative; z-index:2; display:flex; flex-direction:column; align-items:center; gap:16px; color:#F6F2E9; cursor:pointer }
.video-play .disc{
  width:78px; height:78px; border-radius:50%; display:grid; place-items:center;
  background:linear-gradient(135deg,var(--gold-hi),var(--gold)); color:#2b2008;
  box-shadow:0 12px 34px -8px rgba(224,166,40,.7); transition:transform .25s var(--ease);
}
.video-play:hover .disc{ transform:scale(1.07) }
.video-play .disc svg{ width:28px; height:28px; margin-left:4px }
.video-cap{ font-size:15px; opacity:.86; letter-spacing:.02em }
.video-tags{ display:flex; gap:10px; justify-content:center; margin-top:24px; flex-wrap:wrap }
.tag{ font-size:13px; font-weight:560; color:var(--ink-2); border:1px solid var(--line); border-radius:100px; padding:7px 15px }

/* ---------- índice de plugins (editorial, sem chrome de card) ---------- */
.suite{ display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:0 clamp(24px,4vw,60px); border-top:1px solid var(--line) }
.plg{
  display:flex; align-items:center; gap:12px; padding:17px 4px; border-bottom:1px solid var(--line);
  transition:padding-left .22s var(--ease), border-color .22s;
}
.plg:hover{ padding-left:10px; border-bottom-color:color-mix(in srgb,var(--gold) 55%,var(--line)) }
.plg .dot{ width:8px; height:8px; flex:none; border-radius:50%; background:var(--gold) }
.plg.teal .dot{ background:var(--teal) }
.plg h3{ font-size:16.5px; letter-spacing:-.01em; transition:color .2s }
.plg:hover h3{ color:var(--gold) }
.plg span{ margin-left:auto; font-size:12.5px; color:var(--ink-3); text-align:right }

/* ---------- preço ---------- */
.price-card{
  max-width:560px; margin-inline:auto; text-align:center; padding:clamp(34px,5vw,56px);
  border:1px solid var(--line); border-radius:24px; background:linear-gradient(180deg,var(--panel),#ECE6D9);
  box-shadow:var(--shadow); position:relative; overflow:hidden;
}
.price-card::before{ content:""; position:absolute; inset:0 0 auto 0; height:4px; background:linear-gradient(90deg,var(--teal),var(--gold-hi),var(--gold)) }
.price-amt{ font-size:clamp(52px,8vw,76px); font-weight:800; letter-spacing:-.03em; line-height:1 }
.price-amt small{ font-size:26px; font-weight:640; color:var(--ink-2); vertical-align:top }
.price-per{ color:var(--ink-2); margin-top:6px }
.price-list{ list-style:none; padding:0; margin:26px 0 30px; display:grid; gap:12px; text-align:left; max-width:340px; margin-inline:auto }
.price-list li{ display:flex; gap:11px; align-items:flex-start; font-size:15.5px }
.price-list svg{ flex:none; width:20px; height:20px; color:var(--teal); margin-top:1px }
.key-chip{ display:inline-block; font-family:var(--mono); font-size:13px; letter-spacing:.06em; color:var(--ink-2);
  background:var(--paper); border:1px dashed var(--line); border-radius:8px; padding:7px 13px; margin-top:20px }

/* ---------- footer ---------- */
footer{ border-top:1px solid var(--line); padding:44px 0; margin-top:40px }
.foot-grid{ display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; align-items:center; color:var(--ink-2); font-size:14.5px }
.foot-links{ display:flex; gap:22px; flex-wrap:wrap }
.foot-links a:hover{ color:var(--ink) }

/* ---------- reveal (aprimora um default já visível) ---------- */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease-expo), transform .7s var(--ease-expo) }
.reveal.in{ opacity:1; transform:none }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1 !important; transform:none !important; transition:none }
  .knob::before,.knob-ptr::before,.story-item{ transition:none }
}

/* Property tipada p/ interpolar o arco (Chrome/Safari). */
@property --v{ syntax:'<number>'; inherits:true; initial-value:.5 }