.brainsync-overlay {
  --bs-ink: #0f172a;
  --bs-ink-soft: #475569;
  --bs-accent: #2563eb;
  --bs-glass: rgba(255, 255, 255, 0.88);
  --bs-stroke: rgba(37, 99, 235, 0.14);
  --bs-shadow: 0 24px 60px rgba(37, 99, 235, 0.14);
}

.brainsync-overlay .brainsync-page {
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 72px 18px 24px;
  color: var(--bs-ink);
}

.brainsync-overlay .brainsync-card {
  width: min(520px, 92vw);
  background: var(--bs-glass);
  border: 1px solid var(--bs-stroke);
  border-radius: 28px;
  padding: 30px 28px 24px;
  text-align: center;
  box-shadow: var(--bs-shadow);
  backdrop-filter: blur(14px);
}

.brainsync-overlay .brainsync-kicker {
  font-size: 0.82em;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bs-accent);
  margin-bottom: 12px;
  font-weight: 800;
}

.brainsync-overlay .brainsync-logo-button {
  border: none;
  background: transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.brainsync-overlay .brainsync-logo-button img {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.18);
}

.brainsync-overlay .brainsync-tagline {
  font-size: 1.05em;
  margin: 14px 0 22px;
  color: var(--bs-ink-soft);
  line-height: 1.5;
}

.brainsync-overlay .brainsync-mode-card {
  text-align: left;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 18px;
  padding: 16px;
  border: 1px solid var(--bs-stroke);
  margin-bottom: 18px;
}

.brainsync-overlay .brainsync-card-title {
  font-size: 0.85em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bs-ink-soft);
  margin-bottom: 10px;
  font-weight: 800;
}

.brainsync-overlay #playlist {
  width: 100%;
  color: var(--bs-ink);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 12px;
  background: #ffffff;
  font-size: 1em;
  padding: 12px 14px;
  font-weight: 600;
  font-family: inherit;
}

.brainsync-overlay .brainsync-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: 20px 0 8px;
}

.brainsync-overlay .brainsync-control-button {
  border: none;
  border-radius: 16px;
  padding: 14px 16px;
  min-width: 110px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.brainsync-overlay .brainsync-control-button img {
  display: block;
}

.brainsync-overlay .brainsync-control-label {
  font-size: 0.85em;
  color: inherit;
}

.brainsync-overlay .brainsync-control-button.primary {
  background: var(--bs-accent);
  color: #fff;
  box-shadow: 0 14px 26px rgba(37, 99, 235, 0.22);
}

.brainsync-overlay .brainsync-control-button.secondary {
  background: rgba(255, 255, 255, 0.82);
  color: var(--bs-ink);
  border: 1px solid rgba(37, 99, 235, 0.16);
}

.brainsync-overlay .brainsync-control-button.secondary img {
  filter: brightness(0.25);
}

.brainsync-overlay .brainsync-control-button:active {
  transform: translateY(2px);
}

.brainsync-overlay .brainsync-now-playing {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95em;
  color: var(--bs-ink-soft);
  margin-bottom: 16px;
}

.brainsync-overlay .brainsync-now-label {
  text-transform: uppercase;
  font-size: 0.75em;
  letter-spacing: 0.08em;
  font-weight: 800;
}

.brainsync-overlay .brainsync-now-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bs-accent);
  opacity: 0.35;
}

.brainsync-overlay .hidden {
  display: none;
}

.brainsync-overlay.is-playing .brainsync-logo-button img {
  animation: brainsync-pulse 1.6s ease-in-out infinite;
}

.brainsync-overlay.is-playing .brainsync-now-dot {
  opacity: 1;
  animation: brainsync-pulse 1.6s ease-in-out infinite;
}

@keyframes brainsync-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}