/* ============================================================
   THE BUTTON — signature feature spotlight (interactive)
   ============================================================ */
.button-spot {
  background: var(--parchment);
  padding: 96px 48px;
  position: relative;
}
.button-spot-inner {
  max-width: 1320px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.button-spot > .section-head {
  max-width: 1320px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 36px;
}
.button-spot-text h2 {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(28px, 3.8vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--prussian);
  margin-bottom: 20px;
}
.button-spot-text h2 em {
  font-style: italic;
  color: var(--antique-gold);
}
.button-spot-text p {
  font-size: 15px;
  line-height: 1.65;
  color: rgba(15, 26, 46, 0.72);
  margin-bottom: 28px;
  max-width: 480px;
}
.button-spot-text .quote-source {
  font-family: var(--body);
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--antique-gold);
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}

/* Interactive demo on right */
.demo-frame {
  background: white;
  border: 1px solid var(--paper-line);
  padding: 32px 28px;
  position: relative;
  box-shadow: 0 28px 80px rgba(18, 43, 79, 0.10), 0 4px 16px rgba(18, 43, 79, 0.04);
}
.demo-frame::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--antique-gold);
}
.demo-crumbs {
  font-family: var(--body);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--admiralty);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.demo-title {
  font-family: var(--display);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.1;
  color: var(--prussian);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.demo-title .badge {
  font-family: var(--body);
  font-size: 9px;
  letter-spacing: 0.18em;
  background: rgba(184, 150, 58, 0.12);
  color: var(--antique-gold);
  padding: 4px 10px;
}
.demo-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--paper-line);
  font-size: 13px;
}
.demo-row .lbl {
  font-family: var(--body);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(15, 26, 46, 0.45);
  padding-top: 1px;
}
.demo-row .val {
  color: var(--prussian);
  font-weight: 400;
}

.demo-action {
  margin-top: 28px;
  background: rgba(184, 150, 58, 0.08);
  border: 1px solid var(--hairline-strong);
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.demo-action::before {
  content: 'CONDITIONS MET · ENABLED';
  position: absolute;
  top: 6px; left: 12px;
  font-family: var(--body);
  font-size: 8px;
  letter-spacing: 0.22em;
  color: var(--antique-gold);
  opacity: 0.85;
}
.demo-action .copy {
  font-family: var(--display);
  font-weight: 500;
  font-size: 14px;
  color: var(--prussian);
  margin-top: 6px;
  line-height: 1.4;
  max-width: 220px;
}
.demo-action button {
  font-family: var(--body);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  background: var(--antique-gold);
  color: var(--prussian-deep);
  border: none;
  padding: 14px 22px;
  position: relative;
  transition: all 0.4s;
}
.demo-action button:hover {
  background: var(--burnished-gold);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(184, 150, 58, 0.3);
}
.demo-action button.pressed {
  background: var(--prussian);
  color: var(--burnished-gold);
}
.demo-receipt {
  margin-top: 20px;
  font-family: var(--body);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--admiralty);
  opacity: 0;
  transition: opacity 0.5s;
  line-height: 1.6;
}
.demo-receipt.visible { opacity: 1; }
.demo-receipt .check { color: var(--antique-gold); margin-right: 6px; }