/* ==========================================================================
   GIGA — Portfolio Stage
   Referência: Blackmagic Design · DJI Pro · Sony Venice · Ableton · Porsche UI
   Precisão técnica, silêncio visual, tecnologia invisível.
   ========================================================================== */

/* ─── Section wrapper ────────────────────────────────────────────────────── */
.stage {
  position: relative;
  padding-block: var(--section-y);
  overflow: hidden;
  background: var(--black);
}

/* Atmospheric depth behind the whole section */
.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(80% 50% at 50% 25%, rgba(92,225,230,0.018), transparent 65%),
    radial-gradient(60% 40% at 15% 80%, rgba(255,235,180,0.010), transparent 55%);
  pointer-events: none;
}

.stage__header {
  text-align: center;
  margin-bottom: clamp(60px, 8vh, 100px);
  position: relative;
  z-index: 1;
}
.stage__header .title { max-width: 22ch; margin-inline: auto; }
.stage__header .lede  { max-width: 56ch; margin: 24px auto 0; }

/* ─── Two-column layout ──────────────────────────────────────────────────── */
.stage__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 400px);
  gap: clamp(40px, 5vw, 80px);
  align-items: stretch;
  position: relative;
  z-index: 1;
}

@media (max-width: 980px) {
  .stage__layout { grid-template-columns: 1fr; }
}

/* ─── Viewport — o palco ─────────────────────────────────────────────────── */
.stage__viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(65% 38% at 50% 0%,  rgba(92,225,230,0.016), transparent 60%),
    radial-gradient(45% 32% at 72% 88%, rgba(255,235,180,0.010), transparent 52%),
    linear-gradient(180deg, #060608 0%, #030305 40%, #010101 100%);
  border: 1px solid rgba(255,255,255,0.052);
  border-radius: var(--r-lg);
  overflow: hidden;
  isolation: isolate;
  --depth: 0;
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.9),
    0 48px 120px rgba(0,0,0,0.65),
    inset 0 1px 0 rgba(255,255,255,0.035);
}

/* Engineering grid — major + minor divisions */
.stage__viewport::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 20px 20px, 20px 20px;
  pointer-events: none;
}

/* ─── Corner calibration marks ───────────────────────────────────────────── */
.stage__corner {
  position: absolute;
  z-index: 10;
  width: 12px;
  height: 12px;
  pointer-events: none;
  opacity: 0.45;
}
.stage__corner--tl { top: 10px; left: 10px;
  border-top: 1px solid rgba(255,255,255,0.55);
  border-left: 1px solid rgba(255,255,255,0.55); }
.stage__corner--tr { top: 10px; right: 10px;
  border-top: 1px solid rgba(255,255,255,0.55);
  border-right: 1px solid rgba(255,255,255,0.55); }
.stage__corner--bl { bottom: 10px; left: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.55);
  border-left: 1px solid rgba(255,255,255,0.55); }
.stage__corner--br { bottom: 10px; right: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.55);
  border-right: 1px solid rgba(255,255,255,0.55); }

/* ─── Technical metadata bar ─────────────────────────────────────────────── */
.stage__meta {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 16px;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.18);
  pointer-events: none;
  border-bottom: 1px solid rgba(255,255,255,0.038);
  background: linear-gradient(180deg, rgba(0,0,0,0.25), transparent);
}
.stage__meta-center {
  color: rgba(255,255,255,0.32);
  letter-spacing: 0.14em;
}

/* ─── Signal strength indicator ──────────────────────────────────────────── */
.stage__signal {
  position: absolute;
  bottom: 10px;
  right: 14px;
  z-index: 10;
  display: flex;
  align-items: flex-end;
  gap: 2px;
  pointer-events: none;
}
.stage__signal-bar {
  width: 3px;
  background: rgba(255,255,255,0.10);
  border-radius: 1px;
  transition: background 800ms var(--ease-smooth);
}
.stage__signal-bar:nth-child(1) { height: 4px; }
.stage__signal-bar:nth-child(2) { height: 7px; }
.stage__signal-bar:nth-child(3) { height: 10px; }
.stage__signal-bar:nth-child(4) { height: 14px; }
.stage__signal-bar.is-active {
  background: rgba(92,225,230,0.70);
}

/* ─── Atmospheric elements ───────────────────────────────────────────────── */
.stage__ambient {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(55% 42% at 50% 52%,
      rgba(92,225,230,0.00) 0%,
      rgba(92,225,230,0.075) 45%,
      rgba(92,225,230,0.00) 100%),
    radial-gradient(50% 38% at 28% 72%,
      rgba(255,210,120,0.035), transparent 55%);
  opacity: calc(var(--depth, 0) * 1.25);
  transition: opacity 1400ms var(--ease-cinematic);
  pointer-events: none;
  mix-blend-mode: screen;
}

.stage__floor {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 28%;
  background:
    linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.85) 100%),
    repeating-linear-gradient(90deg,
      rgba(255,255,255,0.022) 0 1px, transparent 1px 60px),
    repeating-linear-gradient(90deg,
      rgba(255,255,255,0.008) 0 1px, transparent 1px 20px);
  transform: perspective(900px) rotateX(58deg);
  transform-origin: bottom center;
  z-index: 1;
  pointer-events: none;
}

.stage__wash {
  position: absolute;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  background:
    radial-gradient(52% 42% at 50% 52%,
      rgba(92,225,230,0.075), transparent 62%),
    radial-gradient(38% 28% at 25% 68%,
      rgba(255,210,100,0.032), transparent 52%);
  opacity: calc(var(--depth, 0) * 1.1);
  mix-blend-mode: screen;
  transition: opacity 1400ms var(--ease-cinematic);
}

/* ─── Layer base ─────────────────────────────────────────────────────────── */
.stage__layer {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1000ms var(--ease-cinematic);
}
.stage__layer.is-on { opacity: 1; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER 0 — Structure: truss + platform
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__truss {
  position: absolute;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(255,255,255,0.075) 0px, rgba(255,255,255,0.075) 1px,
      transparent 1px, transparent 9px,
      rgba(255,255,255,0.030) 9px, rgba(255,255,255,0.030) 10px,
      transparent 10px, transparent 18px
    );
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: 2px;
}

.stage__truss--top {
  top: 12%; left: 12%; right: 12%;
  height: 9px;
  transform: translateY(-18px);
  opacity: 0;
  transition: transform 1100ms var(--ease-out-expo), opacity 700ms var(--ease-smooth);
}
.stage__truss--left,
.stage__truss--right {
  top: 12%; bottom: 30%;
  width: 9px;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255,255,255,0.075) 0px, rgba(255,255,255,0.075) 1px,
      transparent 1px, transparent 9px,
      rgba(255,255,255,0.030) 9px, rgba(255,255,255,0.030) 10px,
      transparent 10px, transparent 18px
    );
  border: 1px solid rgba(255,255,255,0.13);
  opacity: 0;
  transition: transform 1100ms var(--ease-out-expo), opacity 700ms var(--ease-smooth);
}
.stage__truss--left  { left: 12%;  transform: translateY(22px); }
.stage__truss--right { right: 12%; transform: translateY(22px); }

.stage__platform {
  position: absolute;
  bottom: 20%;
  left: 20%; right: 20%;
  height: 4.5%;
  background:
    linear-gradient(180deg,
      rgba(255,255,255,0.055) 0%,
      rgba(255,255,255,0.018) 50%,
      rgba(0,0,0,0.55) 100%);
  border: 1px solid rgba(255,255,255,0.09);
  border-bottom-color: rgba(255,255,255,0.05);
  border-radius: 1px;
  transform: translateY(22px) scaleX(0.88);
  opacity: 0;
  transition: transform 1200ms var(--ease-out-expo), opacity 800ms var(--ease-smooth);
}
.stage__platform::before,
.stage__platform::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: rgba(255,255,255,0.14);
}
.stage__platform::before { left: 0; }
.stage__platform::after  { right: 0; }

.stage__layer--structure.is-on .stage__truss--top    { transform: translateY(0); opacity: 1; }
.stage__layer--structure.is-on .stage__truss--left   { transform: translateY(0); opacity: 1; transition-delay: 90ms; }
.stage__layer--structure.is-on .stage__truss--right  { transform: translateY(0); opacity: 1; transition-delay: 90ms; }
.stage__layer--structure.is-on .stage__platform      { transform: translateY(0) scaleX(1); opacity: 1; transition-delay: 210ms; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER 1 — Lighting: volumetric beams + spots
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__beam {
  position: absolute;
  top: 12%;
  width: 56px;
  height: 78%;
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
  background: linear-gradient(180deg,
    rgba(255,235,170,0.24) 0%,
    rgba(255,220,140,0.07) 55%,
    transparent 85%);
  filter: blur(1.8px);
  transform-origin: top center;
  opacity: 0;
  transition: opacity 1200ms var(--ease-cinematic);
}
.stage__beam--1 { left: calc(28% - 28px); transform: rotate(-5deg); }
.stage__beam--2 { left: calc(50% - 28px); transform: rotate(0deg); }
.stage__beam--3 { left: calc(72% - 28px); transform: rotate(5deg); }

.stage__spot {
  position: absolute;
  border-radius: 50%;
  filter: blur(52px);
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 1300ms var(--ease-cinematic);
}
.stage__spot--key {
  width: 44%; height: 28%;
  bottom: 19%; left: 28%;
  background: radial-gradient(circle,
    rgba(255,225,165,0.50) 0%,
    rgba(255,200,130,0.16) 52%,
    transparent 72%);
}
.stage__spot--rim {
  width: 52%; height: 20%;
  bottom: 23%; left: 24%;
  background: radial-gradient(circle,
    rgba(92,225,230,0.18) 0%,
    rgba(92,225,230,0.05) 52%,
    transparent 72%);
}
.stage__spot--fill {
  width: 72%; height: 32%;
  bottom: 15%; left: 14%;
  background: radial-gradient(circle,
    rgba(255,245,220,0.05) 0%,
    transparent 65%);
}

.stage__layer--light.is-on .stage__beam { opacity: 1; }
.stage__layer--light.is-on .stage__spot { opacity: 1; }
.stage__layer--light.is-on .stage__spot--rim  { transition-delay: 280ms; }
.stage__layer--light.is-on .stage__spot--fill { transition-delay: 500ms; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER 2 — Sound: speakers + organic waveform
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__speaker {
  position: absolute;
  top: 22%;
  width: 10px;
  height: 36%;
  background: linear-gradient(180deg, #222226, #0a0a0c);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 2px;
  box-shadow:
    inset 0 0 0 1px rgba(0,0,0,0.55),
    0 0 28px rgba(0,0,0,0.8);
  transform: translateY(-16px);
  opacity: 0;
  transition: opacity 800ms var(--ease-smooth), transform 1000ms var(--ease-out-expo);
}
/* Grille lines */
.stage__speaker::before {
  content: "";
  position: absolute;
  left: 2px; right: 2px;
  top: 12%; bottom: 12%;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(255,255,255,0.045) 0 1px,
    transparent 1px 3px
  );
  border-radius: 1px;
}
.stage__speaker--left  { left: 8%; }
.stage__speaker--right { right: 8%; }

.stage__wave {
  position: absolute;
  left: 14%; right: 14%;
  top: 55%;
  height: 24%;
  opacity: 0;
  transition: opacity 1000ms var(--ease-cinematic);
  overflow: visible;
}
/* Primary line — gradient stroke via SVG defs */
.stage__wave-path {
  fill: none;
  stroke: url(#wave-gradient);
  stroke-width: 0.9;
  filter: drop-shadow(0 0 5px rgba(92,225,230,0.55));
  vector-effect: non-scaling-stroke;
}
/* Soft background harmonic */
.stage__wave-path--soft {
  fill: none;
  stroke: rgba(92,225,230,0.09);
  stroke-width: 3px;
  filter: blur(3px);
  vector-effect: non-scaling-stroke;
}

.stage__layer--sound.is-on .stage__speaker { transform: translateY(0); opacity: 1; }
.stage__layer--sound.is-on .stage__speaker--right { transition-delay: 110ms; }
.stage__layer--sound.is-on .stage__wave { opacity: 1; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER 3 — LED wall
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__led-wall {
  position: absolute;
  top: 14%;
  left: 28%; right: 28%;
  height: 34%;
  background: linear-gradient(180deg, #060608, #020203);
  border: 1px solid rgba(255,255,255,0.11);
  box-shadow:
    inset 0 0 0 1px rgba(0,0,0,0.6),
    0 36px 100px rgba(0,0,0,0.75),
    0 0 0 0.5px rgba(92,225,230,0.06),
    0 0 65px rgba(92,225,230,0.09);
  transform: scale(0.93) translateY(14px);
  opacity: 0;
  transition: opacity 900ms var(--ease-smooth), transform 1100ms var(--ease-out-expo);
}
/* Broadcast content simulation */
.stage__led-wall::before {
  content: "";
  position: absolute;
  inset: 3px;
  background:
    radial-gradient(62% 52% at 30% 36%, rgba(92,225,230,0.28), transparent 52%),
    radial-gradient(42% 48% at 74% 68%, rgba(255,255,255,0.15), transparent 52%),
    linear-gradient(158deg, rgba(92,225,230,0.07), transparent 52%),
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(0,0,0,0.35));
}
/* Pixel-matrix grid */
.stage__led-wall::after {
  content: "";
  position: absolute;
  inset: 3px;
  background-image:
    repeating-linear-gradient(0deg,   rgba(0,0,0,0.18) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(90deg,  rgba(0,0,0,0.18) 0 1px, transparent 1px 4px);
  mix-blend-mode: multiply;
}

.stage__led-grid {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg,  rgba(255,255,255,0.025) 0 1px, transparent 1px 8px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.025) 0 1px, transparent 1px 8px);
  opacity: 0;
  mix-blend-mode: overlay;
  transition: opacity 1000ms var(--ease-cinematic);
}

.stage__layer--led.is-on .stage__led-wall { opacity: 1; transform: scale(1) translateY(0); }
.stage__layer--led.is-on .stage__led-grid { opacity: 0.32; transition-delay: 280ms; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER 4 — Streaming: cameras + REC badge
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__camera {
  position: absolute;
  width: 26px; height: 16px;
  background: linear-gradient(180deg, #1e1e22, #060608);
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: 3px;
  opacity: 0;
  transition: opacity 800ms var(--ease-smooth);
}
/* Lens */
.stage__camera::after {
  content: "";
  position: absolute;
  right: -7px; top: 3px;
  width: 9px; height: 9px;
  background: radial-gradient(circle, rgba(30,30,38,1), rgba(8,8,12,1));
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  box-shadow: inset 0 0 3px rgba(92,225,230,0.08);
}
/* Body detail */
.stage__camera::before {
  content: "";
  position: absolute;
  left: 3px; top: 4px;
  width: 4px; height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 1px;
}
.stage__camera--a { bottom: 29%; left: 18%; }
.stage__camera--b { bottom: 31%; right: 18%; transform: scaleX(-1); }

.stage__rec {
  position: absolute;
  top: 8%; right: 8%;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  background: rgba(10,10,12,0.78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.065);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.24em;
  color: rgba(255,90,90,0.90);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 700ms var(--ease-smooth), transform 700ms var(--ease-out-expo);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.6), 0 6px 24px rgba(0,0,0,0.5);
}
.stage__rec-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #ff4f4f;
  box-shadow: 0 0 7px rgba(255,79,79,0.85);
  animation: stage-rec 1.8s ease-in-out infinite;
}
@keyframes stage-rec {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%       { opacity: 0.3; transform: scale(0.6); }
}

.stage__layer--stream.is-on .stage__camera { opacity: 1; }
.stage__layer--stream.is-on .stage__camera--b { transition-delay: 190ms; }
.stage__layer--stream.is-on .stage__rec { opacity: 1; transform: translateY(0); transition-delay: 320ms; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER 5 — Operations HUD
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__op {
  position: absolute;
  width: 15px; height: 19px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 2px 2px 6px 6px;
  opacity: 0;
  transition: opacity 900ms var(--ease-smooth);
}
.stage__op::before {
  content: "";
  position: absolute;
  left: 50%; top: -5px;
  width: 5px; height: 5px;
  background: rgba(255,255,255,0.32);
  border-radius: 50%;
  transform: translateX(-50%);
}
.stage__op--a { bottom: 8%; left: 32%; }
.stage__op--b { bottom: 8%; right: 32%; }

.stage__hud {
  position: absolute;
  bottom: 6%;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 7px 16px;
  background: rgba(6,6,8,0.76);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.065);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.32);
  opacity: 0;
  transition: opacity 900ms var(--ease-smooth), transform 900ms var(--ease-out-expo);
  white-space: nowrap;
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.7),
    0 10px 36px rgba(0,0,0,0.6);
}
.stage__hud b { color: rgba(255,255,255,0.90); font-weight: 500; }
.stage__hud .hud-sep {
  display: inline-block;
  margin: 0 12px;
  color: rgba(255,255,255,0.12);
  font-weight: 300;
}

.stage__layer--ops.is-on .stage__op { opacity: 1; }
.stage__layer--ops.is-on .stage__op--b { transition-delay: 140ms; }
.stage__layer--ops.is-on .stage__hud { opacity: 1; transform: translateX(-50%) translateY(0); transition-delay: 240ms; }

/* ═══════════════════════════════════════════════════════════════════════════
   LAYER 6 — Audience
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__audience-row {
  position: absolute;
  left: 3%; right: 3%;
  height: 11px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 900ms var(--ease-cinematic), transform 1000ms var(--ease-out-expo);
}
.stage__audience-row::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle 3px at  4%  50%, rgba(255,255,255,0.55), transparent 80%),
    radial-gradient(circle 3px at  9%  50%, rgba(255,255,255,0.48), transparent 80%),
    radial-gradient(circle 3px at 14%  50%, rgba(255,255,255,0.52), transparent 80%),
    radial-gradient(circle 3px at 19%  50%, rgba(255,255,255,0.45), transparent 80%),
    radial-gradient(circle 3px at 24%  50%, rgba(255,255,255,0.50), transparent 80%),
    radial-gradient(circle 3px at 29%  50%, rgba(255,255,255,0.48), transparent 80%),
    radial-gradient(circle 3px at 34%  50%, rgba(255,255,255,0.55), transparent 80%),
    radial-gradient(circle 3px at 39%  50%, rgba(255,255,255,0.45), transparent 80%),
    radial-gradient(circle 3px at 44%  50%, rgba(255,255,255,0.52), transparent 80%),
    radial-gradient(circle 3px at 49%  50%, rgba(255,255,255,0.48), transparent 80%),
    radial-gradient(circle 3px at 54%  50%, rgba(255,255,255,0.55), transparent 80%),
    radial-gradient(circle 3px at 59%  50%, rgba(255,255,255,0.45), transparent 80%),
    radial-gradient(circle 3px at 64%  50%, rgba(255,255,255,0.50), transparent 80%),
    radial-gradient(circle 3px at 69%  50%, rgba(255,255,255,0.48), transparent 80%),
    radial-gradient(circle 3px at 74%  50%, rgba(255,255,255,0.52), transparent 80%),
    radial-gradient(circle 3px at 79%  50%, rgba(255,255,255,0.45), transparent 80%),
    radial-gradient(circle 3px at 84%  50%, rgba(255,255,255,0.50), transparent 80%),
    radial-gradient(circle 3px at 89%  50%, rgba(255,255,255,0.48), transparent 80%),
    radial-gradient(circle 3px at 94%  50%, rgba(255,255,255,0.55), transparent 80%);
  filter: blur(0.3px);
}
.stage__audience-row--1 { bottom: 10%; }
.stage__audience-row--2 { bottom:  6%; }
.stage__audience-row--3 { bottom:  2%; }

.stage__layer--audience.is-on .stage__audience-row    { opacity: 0.80; transform: translateY(0); }
.stage__layer--audience.is-on .stage__audience-row--2 { transition-delay: 150ms; opacity: 0.62; }
.stage__layer--audience.is-on .stage__audience-row--3 { transition-delay: 300ms; opacity: 0.45; }

/* ═══════════════════════════════════════════════════════════════════════════
   STEPS — sidebar operacional premium
   ═══════════════════════════════════════════════════════════════════════════ */
.stage__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-self: stretch;
}

.stage__step {
  position: relative;
}

/* Luminous left-edge indicator */
.stage__step::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: rgba(255,255,255,0.05);
  transition:
    background 500ms var(--ease-smooth),
    box-shadow 500ms var(--ease-smooth);
}
.stage__step.is-active::before {
  background: rgba(92,225,230,0.92);
  box-shadow:
    0 0 6px  rgba(92,225,230,0.60),
    0 0 18px rgba(92,225,230,0.18);
  animation: step-line-pulse 2.8s ease-in-out infinite;
}
@keyframes step-line-pulse {
  0%, 100% { opacity: 1;   box-shadow: 0 0 6px rgba(92,225,230,0.60), 0 0 18px rgba(92,225,230,0.18); }
  50%       { opacity: 0.6; box-shadow: 0 0 3px rgba(92,225,230,0.30), 0 0  6px rgba(92,225,230,0.08); }
}

.stage__step-btn {
  width: 100%;
  display: grid;
  grid-template-columns: 26px 1fr;
  grid-template-rows: auto auto;
  column-gap: 12px;
  align-items: baseline;
  padding: 15px 0 15px 18px;
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,0.042);
  background: transparent;
  text-align: left;
  transition: background 400ms var(--ease-smooth);
}
html.js-cursor .stage__step-btn { cursor: none; }
.stage__step:last-child .stage__step-btn { border-bottom: 0; }
.stage__step.is-active .stage__step-btn { background: rgba(255,255,255,0.016); }

.stage__step-num {
  grid-row: span 2;
  align-self: start;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.26em;
  color: rgba(255,255,255,0.18);
  padding-top: 5px;
  transition: color 450ms var(--ease-smooth);
}
.stage__step.is-active .stage__step-num { color: rgba(92,225,230,0.80); }

.stage__step-name {
  font-size: clamp(15px, 1.4vw, 19px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: rgba(255,255,255,0.38);
  transition: color 450ms var(--ease-smooth);
}
.stage__step.is-active .stage__step-name { color: var(--white); }
.stage__step-btn:hover .stage__step-name { color: rgba(255,255,255,0.70); }

.stage__step-desc {
  grid-column: 2;
  font-size: 11.5px;
  line-height: 1.58;
  letter-spacing: 0.006em;
  color: rgba(255,255,255,0.26);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  transition:
    max-height 750ms var(--ease-cinematic),
    opacity    550ms var(--ease-smooth),
    margin-top 750ms var(--ease-cinematic);
}
.stage__step.is-active .stage__step-desc {
  max-height: 80px;
  opacity: 1;
  margin-top: 8px;
}

@media (max-width: 980px) {
  .stage__steps { border-top: 1px solid rgba(255,255,255,0.045); padding-top: 8px; }
  .stage__step::before { display: none; }
  .stage__step-btn { padding-left: 0; }
}