:root {
  --boot-bg: #f5f0e8;
  --boot-surface: #fffdf9;
  --boot-text: #2c2518;
  --boot-muted: #7a6e5f;
  --boot-accent: #7a8c6e;
  --boot-important: hsl(38, 85%, 62%);
  --boot-radius-sm: 4px;
  --boot-radius-md: 7px;
  --boot-shadow: rgba(44, 37, 24, 0.18);
  --boot-font-family: "Noto Serif KR", serif;
  --boot-font-size: 14px;
}

html,
body,
#root {
  min-height: 100%;
  margin: 0;
}

body {
  background: var(--boot-bg);
  color: var(--boot-text);
  font-family: var(--boot-font-family);
  font-size: var(--boot-font-size);
}

.app-loading-screen {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  box-sizing: border-box;
  overflow: hidden;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--boot-accent) 10%, transparent) 0 1px, transparent 1px 40px),
    linear-gradient(0deg, color-mix(in srgb, var(--boot-muted) 10%, transparent) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--boot-accent) 9%, transparent) 0 18px, transparent 18px 36px),
    var(--boot-bg);
}

.app-loading-stack {
  width: min(420px, 100%);
  display: grid;
  justify-items: center;
  gap: 22px;
  text-align: center;
}

.app-loading-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
}

.app-loading-logo-mark {
  position: relative;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: var(--boot-surface);
  border: 2px solid var(--boot-text);
  border-radius: var(--boot-radius-sm);
  box-shadow: 4px 4px 0 var(--boot-shadow);
}

.app-loading-logo-mark::before,
.app-loading-logo-mark::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 7px;
  background: var(--boot-accent);
}

.app-loading-logo-mark::before {
  top: 4px;
  left: 4px;
}

.app-loading-logo-mark::after {
  right: 4px;
  bottom: 4px;
  background: var(--boot-important);
}

.app-loading-logo-mark > span {
  width: 11px;
  height: 11px;
  background: var(--boot-bg);
  border: 2px solid var(--boot-muted);
  border-radius: var(--boot-radius-sm);
  z-index: 1;
}

.app-loading-logo-text {
  font-size: clamp(22px, 8vw, 34px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

.app-loading-diary {
  width: min(292px, 78vw);
  height: clamp(150px, 34vw, 184px);
  display: grid;
  place-items: center;
  perspective: 900px;
}

.app-loading-diary-book {
  position: relative;
  width: 100%;
  height: 100%;
  transform: rotateX(7deg) rotateZ(-1deg);
  transform-style: preserve-3d;
}

.app-loading-diary-cover,
.app-loading-diary-page,
.app-loading-diary-spine {
  position: absolute;
  box-sizing: border-box;
}

.app-loading-diary-cover {
  top: 7px;
  bottom: 7px;
  width: 50%;
  border: 2px solid var(--boot-text);
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--boot-accent) 24%, var(--boot-surface) 76%),
      color-mix(in srgb, var(--boot-surface) 86%, var(--boot-bg) 14%)
    );
  box-shadow: 5px 7px 0 var(--boot-shadow);
}

.app-loading-diary-cover--left {
  left: 0;
  border-right-width: 1px;
  border-radius: var(--boot-radius-md) 2px 2px var(--boot-radius-md);
}

.app-loading-diary-cover--right {
  left: 50%;
  border-left-width: 1px;
  border-radius: 2px var(--boot-radius-md) var(--boot-radius-md) 2px;
}

.app-loading-diary-page {
  --loading-page-border: 1px solid color-mix(in srgb, var(--boot-muted) 45%, transparent);
  --loading-page-background:
    linear-gradient(90deg, color-mix(in srgb, var(--boot-accent) 36%, transparent) 0 2px, transparent 2px 13px),
    repeating-linear-gradient(
      0deg,
      transparent 0 13px,
      color-mix(in srgb, var(--boot-muted) 18%, transparent) 13px 14px,
      transparent 14px 19px
    ),
    linear-gradient(
      90deg,
      color-mix(in srgb, var(--boot-bg) 35%, transparent),
      transparent 18% 82%,
      color-mix(in srgb, var(--boot-text) 7%, transparent)
    ),
    color-mix(in srgb, var(--boot-surface) 90%, var(--boot-bg) 10%);
  --loading-page-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--boot-surface) 70%, transparent),
    inset 0 12px 24px color-mix(in srgb, var(--boot-bg) 24%, transparent);

  top: 16px;
  bottom: 16px;
  width: calc(50% - 16px);
  border: var(--loading-page-border);
  background: var(--loading-page-background);
  box-shadow: var(--loading-page-shadow);
}

.app-loading-diary-page--left {
  left: 13px;
  border-radius: var(--boot-radius-sm) 2px 2px var(--boot-radius-sm);
}

.app-loading-diary-page--right {
  left: calc(50% + 3px);
  border-radius: 2px var(--boot-radius-sm) var(--boot-radius-sm) 2px;
  z-index: 2;
}

.app-loading-diary-page--turn {
  left: 50%;
  width: calc(50% - 13px);
  transform-origin: left center;
  transform-style: preserve-3d;
  border: 0;
  border-radius: 2px var(--boot-radius-sm) var(--boot-radius-sm) 2px;
  background: transparent;
  box-shadow: none;
  z-index: 6;
  opacity: 0;
  animation: app-loading-page-turn 2.7s cubic-bezier(0.62, 0.02, 0.22, 1) infinite;
  will-change: transform, opacity;
}

.app-loading-diary-page--turn::before,
.app-loading-diary-page--turn::after {
  content: "";
  position: absolute;
  inset: 0;
  border: var(--loading-page-border);
  border-radius: inherit;
  background: var(--loading-page-background);
  box-shadow: var(--loading-page-shadow);
  backface-visibility: hidden;
}

.app-loading-diary-page--turn::after {
  transform: rotateY(180deg);
}

.app-loading-diary-page--turn-2 {
  animation-delay: 0.9s;
}

.app-loading-diary-page--turn-3 {
  animation-delay: 1.8s;
}

.app-loading-diary-spine {
  top: 10px;
  bottom: 10px;
  left: calc(50% - 4px);
  z-index: 9;
  width: 8px;
  border-left: 1px solid color-mix(in srgb, var(--boot-text) 20%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--boot-surface) 48%, transparent);
  background:
    linear-gradient(
      90deg,
      color-mix(in srgb, var(--boot-text) 20%, transparent),
      color-mix(in srgb, var(--boot-surface) 72%, var(--boot-bg) 28%),
      color-mix(in srgb, var(--boot-text) 12%, transparent)
    );
}

.app-loading-copy {
  display: grid;
  gap: 7px;
}

.app-loading-copy strong {
  font-size: clamp(18px, 5vw, 24px);
  line-height: 1.25;
}

.app-loading-copy span {
  color: var(--boot-muted);
  font-size: 14px;
  line-height: 1.45;
}

:root[data-visual-theme="pixel"] .app-loading-screen {
  font-family: "Galmuri11", "Galmuri9", "Apple SD Gothic Neo", "Noto Sans KR", monospace;
  image-rendering: pixelated;
}

:root[data-visual-theme="pixel"] .app-loading-logo-text {
  font-family: "Press Start 2P", "Galmuri11", monospace;
  font-size: clamp(15px, 5vw, 22px);
}

:root[data-visual-theme="terminal"] .app-loading-screen {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

:root[data-visual-theme="frutiger-aero"] .app-loading-screen {
  font-family: "Nunito Sans", "NanumSquareRound", "Jua", "Noto Sans KR", sans-serif;
}

@keyframes app-loading-page-turn {
  0% {
    opacity: 0;
    transform: rotateY(0deg) translateZ(1px);
  }

  8% {
    opacity: 1;
  }

  45% {
    opacity: 1;
    transform: rotateY(-174deg) translateZ(1px);
  }

  58%,
  100% {
    opacity: 0;
    transform: rotateY(-180deg) translateZ(1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .app-loading-diary-page--turn {
    animation: none;
    opacity: 0.82;
    transform: rotateY(-18deg) translateZ(1px);
  }

  .app-loading-diary-page--turn-2,
  .app-loading-diary-page--turn-3 {
    display: none;
  }
}