*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
  height: 100%;
  background: #000;
  color: #d8f5e4;
  font-family: "Segoe UI", system-ui, sans-serif;
  overflow: hidden;
}

.landing {
  position: fixed;
  inset: 0;
  min-height: 100dvh;
  background: #000;
}

.landing-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
  z-index: 1;
}

.landing-video.is-dormant {
  display: none !important;
}

.landing-video.is-active {
  display: block;
}

.landing-video.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.landing-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  z-index: 2;
  transition: opacity 0.6s ease;
}

.landing-poster.is-visible {
  opacity: 1;
}

.landing-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.15) 0%, rgba(0, 0, 0, 0.55) 100%);
  pointer-events: none;
}

.landing-logo {
  position: absolute;
  top: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(92px, 18vw);
  height: auto;
  z-index: 3;
  filter: drop-shadow(0 0 18px rgba(122, 255, 170, 0.35));
  opacity: 0;
  transition: opacity 0.8s ease 0.2s;
}

.landing-logo.is-visible {
  opacity: 1;
}

.landing-ui {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding: 2rem 1.25rem 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s ease;
}

.landing-ui.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.classified-folder {
  appearance: none;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
  position: relative;
  width: min(280px, 72vw);
  animation: folderPulse 3s ease-in-out infinite;
}

.classified-folder:focus-visible {
  outline: 2px solid #7cffa8;
  outline-offset: 8px;
}

.folder-body {
  position: relative;
  width: 100%;
  height: 180px;
  border-radius: 8px 8px 4px 4px;
  background: linear-gradient(180deg, #d8c089 0%, #b89a5d 55%, #9a7f45 100%);
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.folder-tab {
  position: absolute;
  top: -18px;
  left: 18px;
  width: 42%;
  height: 28px;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, #e6d4a0 0%, #c7aa6f 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.folder-stamp {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-8deg);
  padding: 0.55rem 1rem;
  border: 3px solid #7cffa8;
  color: #7cffa8;
  font-family: "Courier New", Courier, monospace;
  font-size: clamp(1.1rem, 4vw, 1.45rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.35);
  box-shadow: 0 0 24px rgba(124, 255, 168, 0.25);
}

.coming-soon {
  margin: 1.35rem 0 0;
  font-size: clamp(0.95rem, 2.8vw, 1.1rem);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(216, 245, 228, 0.82);
  text-shadow: 0 0 16px rgba(124, 255, 168, 0.25);
}

.landing-footer {
  position: absolute;
  bottom: 0.75rem;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  justify-content: center;
  gap: 1rem;
  font-size: 0.78rem;
  opacity: 0;
  transition: opacity 0.8s ease 0.4s;
}

.landing-footer.is-visible {
  opacity: 0.65;
}

.landing-footer a {
  color: rgba(216, 245, 228, 0.75);
  text-decoration: none;
}

.landing-footer a:hover {
  color: #7cffa8;
}

.start-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

.is-mobile .start-overlay {
  backdrop-filter: none;
}

.start-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.start-btn {
  appearance: none;
  border: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  padding: 1.5rem;
  color: #d8f5e4;
  animation: startPulse 2.4s ease-in-out infinite;
}

.start-btn:focus-visible {
  outline: 2px solid #7cffa8;
  outline-offset: 8px;
  border-radius: 12px;
}

.start-logo {
  width: min(120px, 28vw);
  height: auto;
  filter: drop-shadow(0 0 24px rgba(124, 255, 168, 0.4));
}

.start-label {
  font-size: clamp(1rem, 3.5vw, 1.25rem);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #7cffa8;
}

.start-hint {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(216, 245, 228, 0.55);
}

@keyframes startPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.03);
    opacity: 0.92;
  }
}

.brief-overlay:not(.is-open) .brief-video {
  display: none;
}

.brief-overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
}

.brief-overlay.is-open {
  display: flex;
}

.brief-panel {
  position: relative;
  width: min(1100px, 96vw);
}

.brief-video {
  width: 100%;
  max-height: 86vh;
  border-radius: 8px;
  background: #000;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.65);
}

.brief-close,
.brief-replay {
  position: absolute;
  top: -2.75rem;
  appearance: none;
  border: 1px solid rgba(124, 255, 168, 0.45);
  background: rgba(0, 0, 0, 0.55);
  color: #d8f5e4;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brief-close {
  right: 0;
}

.brief-replay {
  right: 5.5rem;
}

.brief-close:hover,
.brief-replay:hover {
  border-color: #7cffa8;
  color: #7cffa8;
}

@keyframes folderPulse {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .classified-folder,
  .start-btn {
    animation: none;
  }

  .landing-logo,
  .landing-ui,
  .landing-footer,
  .landing-poster {
    transition: none;
  }
}