/* Section transitions — slide out, briefing card, dock strip, slide in */

.stg-slide-exit {
  animation: stg-slide-out-right 0.48s cubic-bezier(0.45, 0, 0.75, 0.2) forwards;
  pointer-events: none;
}

.stg-slide-enter {
  animation: stg-slide-in-left 0.48s cubic-bezier(0.2, 0.9, 0.3, 1) forwards;
}

@keyframes stg-slide-out-right {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(108%);
  }
}

@keyframes stg-slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-108%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.gate.is-transitioning .gate-title,
.gate.is-transitioning .gate-sub {
  opacity: 0;
  pointer-events: none;
  max-height: 0;
  margin: 0;
  overflow: hidden;
  transition:
    opacity 0.25s ease,
    max-height 0.35s ease,
    margin 0.35s ease;
}

.gate.is-briefing-card .gate-title,
.gate.is-briefing-card .gate-sub {
  opacity: 0;
  max-height: 0;
  margin: 0;
  overflow: hidden;
}

.section-briefing {
  width: 100%;
  max-width: 400px;
  margin: 0 auto 12px;
  padding: 0;
  box-sizing: border-box;
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  pointer-events: none;
  transition: none;
}

.section-briefing.hidden {
  display: none !important;
}

.section-briefing.is-reveal {
  display: block;
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  transition:
    opacity 0.38s cubic-bezier(0.2, 0.9, 0.3, 1),
    transform 0.42s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.section-briefing.is-docking {
  pointer-events: none;
  animation: stg-briefing-dock 0.52s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.section-briefing.is-docked {
  display: block;
  opacity: 1;
  transform: none;
  pointer-events: none;
  margin-bottom: 8px;
  padding: 8px 12px 10px;
  background: #fff;
  border: 2px solid #dadce0;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(60, 64, 67, 0.2);
}

@keyframes stg-briefing-dock {
  0% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  100% {
    opacity: 1;
    transform: translateY(-8px) scale(0.98);
  }
}

.section-briefing-recaptcha {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0 0 10px;
  padding: 10px 12px;
  background: #f8f9fa;
  border-left: 3px solid #4285f4;
  border-radius: 2px;
}

.section-briefing-recaptcha-badge {
  flex-shrink: 0;
  font-family: Roboto, Arial, sans-serif;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #5f6368;
}

.section-briefing-reason {
  margin: 0;
  font-family: Roboto, Arial, sans-serif;
  font-size: 0.82rem;
  line-height: 1.45;
  color: #3c4043;
}

.section-briefing.is-docked .section-briefing-recaptcha {
  margin-bottom: 6px;
  padding: 6px 8px;
}

.section-briefing.is-docked .section-briefing-reason {
  font-size: 0.72rem;
  line-height: 1.35;
}

.section-briefing-name {
  margin: 0 0 6px;
  font-family: Roboto, Arial, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: #202124;
  letter-spacing: 0.02em;
}

.section-briefing.is-docked .section-briefing-name {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.section-briefing-desc {
  margin: 0 0 16px;
  font-family: Roboto, Arial, sans-serif;
  font-size: 0.88rem;
  line-height: 1.5;
  color: #5f6368;
}

.section-briefing.is-docked .section-briefing-desc,
.section-briefing.is-docked .section-briefing-next {
  display: none;
}

.gate:has(.section-briefing.is-docked) .gate-title {
  display: none;
}

.section-briefing-next {
  display: block;
  width: 100%;
  padding: 12px 20px;
  font-family: Roboto, Arial, sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: #fff;
  background: #4285f4;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(66, 133, 244, 0.35);
  transition: background 0.15s ease;
}

.section-briefing-next:hover {
  background: #3367d6;
}

.win-screen.stg-slide-enter {
  animation: stg-slide-in-left 0.48s cubic-bezier(0.2, 0.9, 0.3, 1) forwards;
}