/* Flutter 시작 전에도 DESIGN.md의 Ink·크림·피치·오렌지와 Pretendard를 쓴다. */
@font-face {
  font-family: BootPretendard;
  src: url('boot-font-regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: BootPretendard;
  src: url('boot-font-bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}

body { margin: 0; }
#boot {
  --boot-ink: #000000;
  --boot-paper: #FDF3EA;
  --boot-peach: #FBD3A8;
  --boot-orange: #F57C1C;
  position: fixed;
  inset: 0;
  z-index: 100;
  overflow: auto;
  color: var(--boot-ink);
  background: var(--boot-paper);
  font-family: BootPretendard, 'Apple SD Gothic Neo', sans-serif;
  text-align: center;
  -webkit-font-smoothing: antialiased;
  scrollbar-color: var(--boot-ink) var(--boot-paper);
}
#boot *, #boot *::before, #boot *::after { box-sizing: border-box; }
#boot ::selection { background: var(--boot-peach); color: var(--boot-ink); }
.boot-shell {
  min-height: 100%;
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: max(32px, env(safe-area-inset-top)) 24px max(32px, env(safe-area-inset-bottom));
}
.boot-scene { margin: auto 0; padding: 24px 0 32px; }
.boot-title-group { position: relative; z-index: 1; }
#boot-title {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  color: var(--boot-ink);
  font-size: clamp(48px, 12vw, 72px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.12;
}
.boot-mark {
  display: inline-block;
  position: relative;
  transform: rotate(9deg);
  margin: 0 3px;
}
.boot-mark::before {
  content: '';
  position: absolute;
  inset: 8% -30% 2%;
  border-radius: 45%;
  background: var(--boot-orange);
  z-index: -1;
}
.boot-title-hanja { font-size: 0.72em; letter-spacing: -0.04em; }
#boot-title > span { color: var(--boot-ink); }
.boot-tagline { margin: 16px 0 0; font-size: 17px; line-height: 1.5; }
#boot-greet {
  display: block;
  position: relative;
  width: min(320px, 100%);
  aspect-ratio: 1 / 1;
  margin: 32px auto 8px;
  padding: 0;
  border: 0;
  border-radius: 48%;
  background: transparent;
  color: var(--boot-ink);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  isolation: isolate;
}
#boot-greet:disabled { cursor: default; }
#boot-greet:disabled ~ #boot-play-hint { visibility: hidden; }
#boot-greet:focus-visible, #boot-retry:focus-visible {
  outline: 3px solid var(--boot-ink);
  outline-offset: 6px;
}
.boot-sun {
  position: absolute;
  inset: 16% 9% 6%;
  border-radius: 46% 54% 51% 49% / 49% 45% 55% 51%;
  background: var(--boot-peach);
  transform: rotate(-12deg);
}
.boot-sun::after {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid var(--boot-paper);
  border-radius: inherit;
}
.boot-trails { position: absolute; inset: 0; width: 100%; height: 100%; color: var(--boot-orange); }
.boot-character-wrap {
  position: absolute;
  inset: 17% 10% 0 3%;
  transform-origin: 50% 85%;
  animation: boot-arrive 650ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
.boot-tiger {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform-origin: 50% 85%;
  transition: transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
}
.boot-magpie {
  position: absolute;
  width: 32%;
  height: 32%;
  object-fit: contain;
  right: 0;
  top: 0;
  transform: rotate(9deg);
  animation: boot-land 750ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
.boot-ripple {
  position: absolute;
  inset: 15% 8% 6%;
  border: 2px solid var(--boot-orange);
  border-radius: 50%;
  opacity: 0;
}
.boot-roar {
  position: absolute;
  left: 2%;
  top: 7%;
  padding: 10px 16px;
  border: 2px solid var(--boot-ink);
  border-radius: 50%;
  background: #FFFFFF;
  font: 700 23px/1.2 BootPretendard, sans-serif;
  transform: rotate(-12deg) scale(0.8);
  opacity: 0;
}
#boot-play-hint { margin: 8px 0 0; font-size: 13px; line-height: 1.5; }
.boot-loading { width: 100%; max-width: 360px; margin: 0 auto; }
.boot-paws { display: flex; gap: 7px; justify-content: center; height: 16px; align-items: center; }
.boot-paws i { width: 7px; height: 7px; border-radius: 50%; background: var(--boot-ink); animation: boot-wait 1.35s ease-in-out infinite; }
.boot-paws i:nth-child(2) { animation-delay: 150ms; }
.boot-paws i:nth-child(3) { animation-delay: 300ms; }
#boot-msg { margin: 14px 0 0; font-size: 14px; line-height: 1.65; word-break: keep-all; overflow-wrap: anywhere; }
#boot-retry {
  min-height: 48px;
  min-width: 144px;
  margin-top: 20px;
  padding: 12px 24px;
  border: 2px solid var(--boot-ink);
  border-radius: 16px;
  background: var(--boot-ink);
  color: #FFFFFF;
  cursor: pointer;
  font: 700 16px/1.4 BootPretendard, sans-serif;
  touch-action: manipulation;
  transition: transform 150ms ease-out;
}
#boot-retry[hidden] { display: none; }
#boot-retry:active { transform: scale(0.96); }
.boot-sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* 클릭 한 번에 인사 한 번. 자동 연출은 등장만, 로딩 중에는 점 세 개만 움직인다. */
#boot.is-roaring .boot-tiger { animation: boot-roar 650ms ease-out; }
#boot.is-roaring .boot-magpie { animation: boot-flutter 650ms ease-out; }
#boot.is-roaring .boot-roar { animation: boot-say 650ms ease-out; }
#boot.is-roaring .boot-ripple { animation: boot-wave 650ms ease-out; }
#boot.is-roaring .boot-mark { animation: boot-emphasis 650ms ease-out; }
#boot[data-paused='true'] * { animation-play-state: paused !important; }
#boot[data-state='error'] .boot-paws i { animation: none; }
#boot[data-state='error'] .boot-paws i:not(:first-child) { display: none; }

@media (hover: hover) and (pointer: fine) {
  #boot-greet:not(:disabled):hover .boot-tiger { transform: rotate(-3deg) translateY(-4px); }
}
@media (min-width: 760px) and (min-height: 540px) {
  .boot-scene { display: flex; align-items: center; justify-content: center; gap: 56px; }
  .boot-title-group { text-align: left; }
  #boot-title { justify-content: flex-start; }
  #boot-greet { margin: 0; flex-shrink: 0; }
  #boot-play-hint { position: absolute; margin-top: 390px; }
  .boot-shell { padding-bottom: 48px; }
}
@media (max-height: 620px) {
  .boot-shell { padding-top: max(20px, env(safe-area-inset-top)); padding-bottom: max(20px, env(safe-area-inset-bottom)); }
  .boot-scene { padding-top: 8px; padding-bottom: 24px; }
  #boot-title { font-size: 44px; }
  .boot-tagline { margin-top: 10px; font-size: 15px; }
  #boot-greet { width: 224px; margin-top: 16px; }
}
@media (max-height: 440px) and (min-width: 540px) {
  .boot-scene { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 32px; padding-bottom: 12px; }
  #boot-greet { width: 168px; margin: 0; }
  #boot-play-hint { flex-basis: 100%; margin: 0; }
  #boot-msg { margin-top: 8px; }
}
@keyframes boot-arrive { from { opacity: 0.65; transform: translateY(18px) rotate(-6deg) scale(0.94); } to { opacity: 1; transform: none; } }
@keyframes boot-land { from { opacity: 0.6; transform: translate(18px, -18px) rotate(20deg); } to { opacity: 1; transform: rotate(9deg); } }
@keyframes boot-wait { 0%, 65%, 100% { transform: scale(1); } 30% { transform: scale(1.5); } }
@keyframes boot-roar { 0%, 100% { transform: none; } 25% { transform: rotate(-7deg) scale(1.07); } 60% { transform: rotate(3deg) scale(1.02); } }
@keyframes boot-flutter { 0%, 100% { transform: rotate(9deg); } 30% { transform: translateY(-14px) rotate(-9deg); } 65% { transform: translateY(-5px) rotate(13deg); } }
@keyframes boot-say { 0%, 100% { opacity: 0; transform: rotate(-12deg) scale(0.8); } 20%, 75% { opacity: 1; transform: rotate(-12deg) scale(1); } }
@keyframes boot-wave { from { opacity: 0.6; transform: scale(0.86); } to { opacity: 0; transform: scale(1.22); } }
@keyframes boot-emphasis { 0%, 100% { transform: rotate(9deg); } 30% { transform: rotate(0) translateY(-5px); } 65% { transform: rotate(15deg); } }
@media (prefers-reduced-motion: reduce) {
  #boot *, #boot *::before, #boot *::after { animation: none !important; transition: none !important; }
  #boot-greet:not(:disabled):hover .boot-tiger { transform: none; }
  #boot.is-roaring .boot-roar { opacity: 1; transform: none; }
}
@media (forced-colors: active) {
  #boot { background: Canvas; color: CanvasText; }
  #boot-greet, #boot-retry { border: 2px solid ButtonText; }
  #boot-retry { background: ButtonFace; color: ButtonText; }
  .boot-sun, .boot-trails, .boot-ripple { display: none; }
  .boot-paws i { background: CanvasText; }
}