.bkf { padding: 18px 0 60px; }
.bkf-container { max-width: 1280px; margin: 0 auto; padding: 0 22px; }

.bkf-head { text-align: center; margin: 18px 0 24px; }
.bkf-head h1 {
  margin: 0;
  font-size: 44px;
  line-height: 1.05;
  font-weight: 950;
  letter-spacing: .2px;
}
.bkf-head p { margin: 10px auto 0; max-width: 72ch; }

.bkf-muted { color: rgba(255,255,255,.68); }

.bkf-card {
  margin: 20px auto 0;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
  border-radius: 18px;
  padding: 18px;
}

.bkf-card__top {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.bkf-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  color: rgba(255,255,255,.92);
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  white-space: nowrap;
}
.bkf-btn:disabled { opacity: .55; cursor: not-allowed; }
.bkf-btn--primary {
  border-color: rgba(255,255,255,.16);
  background: rgba(255,255,255,.08);
}

#bkfFile { display: none; }

.bkf-drop {
  border: 1px dashed rgba(255,255,255,.18);
  background: rgba(0,0,0,.12);
  border-radius: 16px;
  padding: 92px 18px;
  text-align: center;
  transition: border-color .15s ease, background .15s ease;
}
.bkf-drop--drag {
  border-color: rgba(255,255,255,.30);
  background: rgba(255,255,255,.04);
}

.bkf-drop__icon {
  font-size: 34px;
  opacity: .9;
}
.bkf-drop__text {
  margin-top: 10px;
  font-weight: 1000;
  letter-spacing: .2px;
}
.bkf-drop__sub { margin-top: 6px; font-size: 12px; }

.bkf-status {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.02);
  display: flex;
  align-items: center;
  gap: 10px;
}
.bkf-status__dot {
  width: 8px; height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,.65);
  flex: 0 0 auto;
}
.bkf-status__txt { font-weight: 700; }
.bkf-status__right { margin-left: auto; font-size: 12px; }

.bkf-results{
  margin-top: 14px;
  display: grid;
  grid-template-columns: 45% 1fr 1fr 1fr;
  gap: 10px;
}
@media (max-width: 860px){
  .bkf-head h1{ font-size: 34px; }
  .bkf-results{ grid-template-columns: 1.4fr 1fr; }
}
@media (max-width: 520px){
  .bkf-results{ grid-template-columns: 1fr; }
}

.bkf-r {
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.02);
  border-radius: 14px;
  padding: 12px;
}
.bkf-r__k { font-size: 12px; color: rgba(255,255,255,.62); }
.bkf-r__v {
  margin-top: 6px;
  font-weight: 950;
  letter-spacing: .2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bkf-foot {
  margin-top: 12px;
  text-align: center;
  font-size: 12px;
}

.bkf-spin{
  display:inline-block;
  width:16px;
  height:16px;
  border:2px solid rgba(255,255,255,.18);
  border-top-color: rgba(255,255,255,.90);
  border-radius:50%;
  animation: bkfspin .7s linear infinite;
  vertical-align:-3px;
}
@keyframes bkfspin{
  to{ transform: rotate(360deg); }
}