:root {
  --shell: #020617;
  --ink: #f8fafc;
  --ink-soft: #94a3b8;
  --hair: rgba(248, 250, 252, 0.1);
  --display: "Space Grotesk", sans-serif;
  --body: "Outfit", sans-serif;
}

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

html, body {
  margin: 0;
  height: 100%;
  max-width: 100%;
  overflow: hidden;
  background: var(--shell);
  color: var(--ink);
  font-family: var(--body);
  font-weight: 300;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  display: block;
}

.chrome {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.5rem;
  padding: 2rem 1.25rem 1rem;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  pointer-events: none;
  background: linear-gradient(to top, rgba(2, 6, 23, 0.78) 0%, rgba(2, 6, 23, 0.28) 55%, rgba(2, 6, 23, 0) 100%);
}

.mark {
  position: absolute;
  top: 1rem;
  left: 1.25rem;
  z-index: 2;
  margin: 0;
  pointer-events: none;
  font-family: var(--display);
  font-size: 1.85rem;
  font-weight: 500;
  letter-spacing: -0.04em;
  text-shadow: 0 1px 8px rgba(2, 6, 23, 0.85);
}

.hint {
  margin: 0;
  flex: 1 1 8rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-shadow: 0 1px 8px rgba(2, 6, 23, 0.85);
}

.stage {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.stage model-viewer {
  display: block;
  width: 100%;
  height: 100%;
  background: transparent;
  cursor: default;
}

.load {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 0.85rem;
  pointer-events: none;
  z-index: 1;
}

.load[hidden] { display: none; }

.load__spin {
  width: 1.75rem;
  height: 1.75rem;
  border: 1.5px solid var(--hair);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.load__label {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.briefing {
  --ui-title: rgb(235, 245, 255);
  --ui-panel: rgba(18, 23, 33, 0.82);
  --ui-continue: rgb(46, 117, 214);
  --ui-skip: rgb(107, 82, 51);
  --ui-restart: rgb(36, 133, 112);
  --ui-toggle: rgb(36, 107, 97);
  --ui-check-box: rgb(13, 20, 20);
  --ui-check: rgb(115, 242, 179);
  --ui-font: "Noto Sans", "Segoe UI", Arial, sans-serif;
  --ui-inset: 1rem;
  position: absolute;
  right: var(--ui-inset);
  top: var(--ui-inset);
  left: auto;
  bottom: auto;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  box-sizing: border-box;
  width: min(26.25rem, calc(100% - (2 * var(--ui-inset))));
  max-width: calc(100% - (2 * var(--ui-inset)));
  height: auto;
  max-height: min(20rem, calc(100% - (2 * var(--ui-inset))));
  min-width: 0;
  min-height: 0;
  padding: 14px 16px 12px;
  overflow: hidden;
  border: 0;
  border-radius: 10px;
  background: var(--ui-panel);
  color: #fff;
  font-family: var(--ui-font);
  box-shadow: none;
}

.briefing [hidden] {
  display: none !important;
}

.briefing__meter,
.briefing__head,
.briefing__title,
.briefing__body,
.briefing__footer {
  min-width: 0;
  max-width: 100%;
}

.briefing__head {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.briefing__meter {
  height: 2px;
  margin: 0 0 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
}

.briefing__meter span {
  display: block;
  width: 0;
  max-width: 100%;
  height: 100%;
  background: var(--ui-continue);
}

.briefing__title {
  flex: 1 1 auto;
  margin: 0 0 6px;
  color: var(--ui-title);
  font-family: var(--ui-font);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.briefing__actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 4px;
  margin: -2px -4px 0 0;
}

.briefing__icon {
  flex: 0 0 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  cursor: pointer;
}

.briefing__icon svg {
  width: 18px;
  height: 18px;
}

.briefing__icon:hover {
  background: rgba(255, 255, 255, 0.12);
}

.briefing__icon:active {
  filter: brightness(0.85);
}

.briefing__mute-off {
  display: none;
}

.briefing__mute.is-muted .briefing__mute-on {
  display: none;
}

.briefing__mute.is-muted .briefing__mute-off {
  display: block;
}

.briefing__body {
  margin: 0;
  min-height: 0;
  overflow: auto;
  overflow-wrap: anywhere;
  word-break: break-word;
  color: #fff;
  font-family: var(--ui-font);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.4;
  white-space: pre-line;
}

.briefing__footer {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 8px;
  margin-top: 10px;
  min-height: 36px;
  overflow: hidden;
}

.briefing__footer-left,
.briefing__footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  min-width: 0;
  max-width: 100%;
}

.briefing__footer-right {
  align-items: flex-end;
}

.briefing__footer-left {
  flex: 1 1 0;
}

.briefing__footer-right {
  flex: 0 1 auto;
}

.briefing__auto {
  display: flex;
  align-items: center;
  gap: 8px;
  box-sizing: border-box;
  width: 100%;
  max-width: 168px;
  min-width: 0;
  height: 36px;
  margin: 0;
  padding: 0 8px 0 10px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--ui-toggle);
  color: #fff;
  font-family: var(--ui-font);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
  text-overflow: ellipsis;
  cursor: pointer;
}

.briefing__check {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  border-radius: 3px;
  background: var(--ui-check-box);
}

.briefing__check input {
  appearance: none;
  position: absolute;
  inset: 0;
  margin: 0;
  cursor: pointer;
}

.briefing__check:has(input:checked)::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--ui-check);
  clip-path: polygon(14% 44%, 0 59%, 43% 95%, 100% 18%, 83% 5%, 41% 62%);
  pointer-events: none;
}

.briefing__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  flex: 0 1 auto;
  min-width: 0;
  max-width: 100%;
  height: 36px;
  padding: 0 10px;
  overflow: hidden;
  border: 0;
  border-radius: 8px;
  color: #fff;
  font-family: var(--ui-font);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
  white-space: nowrap;
  text-overflow: ellipsis;
  cursor: pointer;
}

.briefing__btn--continue,
.briefing__btn--restart {
  width: min(128px, 100%);
}

.briefing__btn--continue {
  background: var(--ui-continue);
}

.briefing__btn--skip {
  width: min(148px, 100%);
  background: var(--ui-skip);
}

.briefing__btn--restart {
  background: var(--ui-restart);
}

.briefing__btn:hover:not(:disabled) {
  filter: brightness(0.9);
}

.briefing__btn:active:not(:disabled) {
  filter: brightness(0.75);
}

.briefing__btn:disabled {
  opacity: 0.5;
  cursor: default;
  filter: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}