/* #region Launch */
#cover-launch {
  display: flex;
  position: fixed;
  flex-direction: column-reverse;
  z-index: 3;
  animation: whiteSplash 2.5s forwards;
  inset: 0;
  background: #fff fixed center url("https://campus.assets.zhilu.cyou/exam/logo_231204.png") no-repeat;
  background-size: 20em;
  padding: 1rem;
  pointer-events: none;
  color: #333;
  font-size: .6em;
  text-align: center;
}

@keyframes whiteSplash {
  0% {
    filter: brightness(10);
  }

  50% {
    filter: brightness(1);
  }

  90% {
    opacity: 1;
  }

  100% {
    display: none;
    opacity: 0;
  }
}
/* #endregion */

/* #region Shell */
#cover-screen {
  display: none;
  position: fixed;
  flex-direction: column;
  justify-content: space-between;
  z-index: 2;
  transition: .2s;
  inset: 0;
  background: #000 fixed center url("https://campus.assets.zhilu.cyou/exam/cover_231204.jpg");
  background-size: cover;
}

#cover-screen>* {
  margin: .5rem 1rem;
}

#cover-mask {
  position: absolute;
  z-index: -1;
  backdrop-filter: blur(.2rem);
  margin: 0;
  inset: 0;
  background: rgb(0 0 0 / 50%);
}
/* #endregion */

/* #region Main */
.cover-main {
  display: flex;
  justify-content: center;
}

.cover-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.cover-title-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: .5rem;
  background: #222;
  padding: .1rem .3rem;
  min-width: 36vw;
}

.cover-meta>* {
  margin: 1em 0;
}
/* #endregion */

/* #region Date Badge */
#cover-date-badge {
  background: #fff;
  height: calc(100% + .6rem);
  color: #222;
}

#cover-date-badge>.reskew {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 3em;
  height: 100%;
}

.cover-date-day {
  font-size: 1.5em;
}

.cover-date-month {
  font-size: .6em;
}
/* #endregion */

/* #region Image */
.cover-image-frame {
  position: relative;
  margin: auto 0;
  box-shadow: 0 0 2rem rgb(0 0 0 / 50%);
  width: 40vw;
  height: 30vw;
  overflow: hidden;
}

#cover-image {
  position: fixed;
  inset: 0 -5vw;
  background: rgb(255 255 255 / 60%) center url("https://campus.assets.zhilu.cyou/exam/cover_231204.jpg");
  background-size: cover;
}
/* #endregion */

/* #region Typography */
.skew {
  transform: skew(-15deg);
}

.reskew>* {
  margin: 0 .5rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cover-main .reskew {
  transform: skew(15deg);
}

#cover-author,
.cover-meta,
#cover-screen> :last-child {
  font-size: .6em;
}
/* #endregion */

/* #region Loading */
#cover-screen .loading-bar {
  position: relative;
  padding: 0 .5em;
  overflow: hidden;
}

#cover-screen .loading-bar::after {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  mix-blend-mode: exclusion;
  backdrop-filter: brightness(.6) contrast(3);
  animation: loadingBarMask 1.5s ease-in-out infinite;
  background: #fff;
  width: 200%;
  height: 100%;
  content: "";
}

@keyframes loadingBarMask {
  0% {
    left: -200%;
  }

  100% {
    left: 200%;
  }
}
/* #endregion */