:root {
  --loading-page: #f8fafc;
  --loading-main: #ffffff;
  --loading-sidebar: #f6f5f3;
  --loading-header: rgba(255, 255, 255, 0.96);
  --loading-border: rgba(229, 231, 235, 0.9);
  --loading-card: #ffffff;
  --loading-active: #dfe8e5;
  --loading-line: #e7edf3;
  --loading-line-strong: #d7e0e8;
  --loading-accent: #12b8ad;
  --loading-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

html[data-theme='dark'] {
  --loading-page: #071524;
  --loading-main: rgba(4, 14, 26, 0.86);
  --loading-sidebar: #111827;
  --loading-header: rgba(24, 36, 52, 0.96);
  --loading-border: rgba(56, 70, 96, 0.7);
  --loading-card: #0f1726;
  --loading-active: rgba(20, 184, 166, 0.16);
  --loading-line: #1c2a3f;
  --loading-line-strong: #2a3950;
  --loading-accent: #14b8a6;
  --loading-shadow: 0 18px 44px rgba(0, 0, 0, 0.26);
}

.app-loading {
  display: grid;
  min-height: 100vh;
  grid-template-columns: 224px minmax(0, 1fr);
  grid-template-rows: 64px minmax(0, 1fr);
  overflow: hidden;
  background: var(--loading-page);
}

.app-loading__sidebar {
  grid-row: 1 / 3;
  min-height: 0;
  border-right: 1px solid var(--loading-border);
  background: var(--loading-sidebar);
}

.app-loading__sidebar::before {
  content: "";
  display: block;
  height: 64px;
  border-bottom: 1px solid var(--loading-border);
  background-image: linear-gradient(90deg, var(--loading-line), var(--loading-line-strong), var(--loading-line));
  background-repeat: no-repeat;
  background-position: center;
  background-size: 148px 22px;
}

.app-loading__nav {
  padding: 16px 14px;
}

.app-loading__nav-item {
  display: block;
  position: relative;
  height: 42px;
  margin-top: 6px;
  overflow: hidden;
  border-radius: 8px;
}

.app-loading__nav-item:first-child {
  margin-top: 0;
}

.app-loading__nav-item--active {
  background: var(--loading-active);
}

.app-loading__nav-item::before,
.app-loading__nav-item::after,
.app-loading__line,
.app-loading__menu,
.app-loading__toolbar,
.app-loading__avatar,
.app-loading__card::before,
.app-loading__card::after {
  display: block;
  background: var(--loading-line);
  animation: app-loading-pulse 1.35s ease-in-out infinite;
}

.app-loading__nav-item::before,
.app-loading__nav-item::after,
.app-loading__card::before,
.app-loading__card::after {
  content: "";
  position: absolute;
}

.app-loading__nav-item::before {
  top: 11px;
  left: 12px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
}

.app-loading__nav-item::after {
  top: 13px;
  left: 42px;
  width: 96px;
  height: 16px;
  border-radius: 6px;
}

.app-loading__header {
  display: flex;
  grid-column: 2;
  align-items: center;
  min-width: 0;
  height: 64px;
  border-bottom: 1px solid var(--loading-border);
  padding-right: 24px;
  padding-left: 20px;
  background: var(--loading-header);
}

.app-loading__spacer {
  flex: 1;
}

.app-loading__main {
  grid-column: 2;
  min-width: 0;
  min-height: 0;
  padding: 24px;
  background: var(--loading-main);
}

.app-loading__line,
.app-loading__menu,
.app-loading__toolbar,
.app-loading__avatar,
.app-loading__card {
  flex: none;
}

.app-loading__line {
  height: 16px;
  border-radius: 6px;
}

.app-loading__menu {
  width: 36px;
  height: 36px;
  margin-right: 18px;
  border-radius: 8px;
}

.app-loading__line--crumb {
  width: 38px;
  height: 18px;
}

.app-loading__toolbar {
  width: 156px;
  height: 32px;
  margin-left: 14px;
  border-radius: 8px;
  background: var(--loading-line-strong);
}

.app-loading__avatar {
  width: 34px;
  height: 34px;
  margin-left: 14px;
  border-radius: 999px;
  background: var(--loading-accent);
}

.app-loading__line--title {
  width: 168px;
  height: 28px;
  border-radius: 8px;
  background: var(--loading-line-strong);
}

.app-loading__line--subtitle {
  width: 520px;
  max-width: 62%;
  height: 18px;
  margin-top: 18px;
}

.app-loading__cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
  column-gap: 20px;
}

.app-loading__card {
  display: block;
  position: relative;
  min-height: 112px;
  border: 1px solid var(--loading-border);
  border-radius: 8px;
  background: var(--loading-card);
  box-shadow: var(--loading-shadow);
}

.app-loading__card::before {
  top: 20px;
  left: 18px;
  width: 102px;
  height: 16px;
  border-radius: 6px;
}

.app-loading__card::after {
  top: 62px;
  left: 18px;
  width: 138px;
  height: 26px;
  border-radius: 6px;
  background: var(--loading-line-strong);
}

@keyframes app-loading-pulse {
  0%,
  100% {
    opacity: 0.72;
  }

  50% {
    opacity: 1;
  }
}

@media (max-width: 900px) {
  .app-loading {
    grid-template-columns: 80px minmax(0, 1fr);
  }

  .app-loading__sidebar::before {
    background-size: 34px 34px;
  }

  .app-loading__nav-item::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .app-loading__nav-item::after,
  .app-loading__toolbar {
    display: none;
  }

  .app-loading__cards {
    grid-template-columns: 1fr;
    row-gap: 16px;
  }
}

@media (max-width: 640px) {
  .app-loading {
    grid-template-columns: 1fr;
    grid-template-rows: 64px minmax(0, 1fr);
  }

  .app-loading__sidebar {
    display: none;
  }

  .app-loading__header,
  .app-loading__main {
    grid-column: 1;
  }

  .app-loading__header {
    padding-right: 16px;
    padding-left: 16px;
  }

  .app-loading__menu {
    margin-right: 24px;
  }

  .app-loading__main {
    padding: 30px 16px 16px;
  }

  .app-loading__line--subtitle {
    max-width: 100%;
  }
}