/* 독자 웹진 전용 비동기 로더. 관리자 loading-spinner.css와 독립된 DOM 스타일 계약이다. */
:root {
  --app-loader-z: 9990;
}

.app-loader {
  position: fixed;
  inset: 0;
  z-index: var(--app-loader-z);
  display: grid;
  place-items: center;
  padding: 24px;
  background: color-mix(in srgb, var(--bg-primary, #0a0a0f) 76%, transparent);
  backdrop-filter: blur(3px) saturate(108%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .28s ease, visibility 0s linear .28s;
}

.app-loader.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity .28s ease, visibility 0s;
}

.app-loader__panel {
  position: relative;
  display: flex;
  width: min(440px, calc(100vw - 32px));
  min-height: 300px;
  box-sizing: border-box;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  overflow: hidden;
  padding: 34px 42px 38px;
  border: 1px solid var(--glass-border, rgba(255, 255, 255, .12));
  border-radius: var(--radius-lg, 20px);
  background: var(--glass-bg, rgba(255, 255, 255, .07));
  box-shadow: var(--shadow-soft, 0 20px 64px rgba(0, 0, 0, .28));
  backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .28s ease, transform .32s var(--transition-slow, cubic-bezier(.16, 1, .3, 1));
}

.app-loader.is-active .app-loader__panel {
  opacity: 1;
  transform: translateY(0);
}

.app-loader.app-loader--brand .app-loader__image-frame {
  display: flex;
  width: min(200px, 68vw);
  height: 112px;
  flex: 0 0 auto;
  align-items: center;
  box-sizing: content-box;
  justify-content: center;
  margin-bottom: 0;
  padding-bottom: 0;
}

.app-loader.app-loader--brand .app-loader__image {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  object-fit: contain;
  transform: none;
}

.app-loader__image[hidden],
.app-loader__identity[hidden],
.app-loader__identity > [hidden],
.app-loader__message[hidden] {
  display: none;
}

.app-loader__identity {
  display: grid;
  justify-items: center;
  gap: 5px;
  min-width: 0;
  text-align: center;
}

.app-loader__webzine-name {
  max-width: 330px;
  color: var(--text-primary, #f4f5fb);
  font-size: clamp(19px, 4.5vw, 24px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.035em;
  overflow-wrap: anywhere;
}

.app-loader__issue-name {
  max-width: 330px;
  color: var(--text-secondary, #b5b8c8);
  font-size: 13px;
  font-weight: 550;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.app-loader__label {
  max-width: 330px;
  margin: 4px 0 0;
  color: var(--text-secondary, #969bad);
  font-size: 12px;
  font-weight: 550;
  line-height: 1.5;
  text-align: center;
  overflow-wrap: anywhere;
}

.app-loader__progress {
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  overflow: hidden;
  background: color-mix(in srgb, var(--accent-primary, #818cf8) 18%, transparent);
}

.app-loader__progress::after {
  position: absolute;
  inset: 0;
  width: 46%;
  background: linear-gradient(90deg, transparent, var(--accent-primary, #818cf8), var(--accent-secondary, #38bdf8), transparent);
  animation: app-loader-progress 1.45s ease-in-out infinite;
  content: "";
}

/* 발행호 컨텍스트가 없는 독자 보조 화면의 레거시 DOM도 원형 링 없이 표시한다. */
.app-loader__spinner {
  position: relative;
  display: grid;
  min-width: 72px;
  min-height: 54px;
  place-items: center;
  color: var(--accent-primary, #818cf8);
  font: 800 22px/1 "Outfit", "Inter", sans-serif;
}

.app-loader__spinner::after {
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: currentColor;
  animation: app-loader-fade 1.1s ease-in-out infinite;
  content: "";
}

.app-loader--scoped {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  border-radius: inherit;
  background: color-mix(in srgb, var(--bg-primary, #0a0a0f) 58%, transparent);
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, visibility 0s linear .2s;
}

.app-loader--scoped.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity .2s ease, visibility 0s;
}

.app-loader__scoped-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
}

.app-loader__scoped-indicator i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary, #818cf8);
  animation: app-loader-dot .9s ease-in-out infinite alternate;
}

.app-loader__scoped-indicator i:nth-child(2) { animation-delay: .16s; }
.app-loader__scoped-indicator i:nth-child(3) { animation-delay: .32s; }

.app-spinner-inline {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  vertical-align: -.125em;
  animation: app-loader-inline 1.1s linear infinite;
}

@keyframes app-loader-progress {
  from { transform: translateX(-110%); }
  to { transform: translateX(240%); }
}

@keyframes app-loader-dot {
  from { opacity: .3; transform: translateY(2px); }
  to { opacity: 1; transform: translateY(-2px); }
}

@keyframes app-loader-fade {
  0%, 100% { opacity: .25; }
  50% { opacity: 1; }
}

@keyframes app-loader-inline {
  to { transform: rotate(360deg); }
}

@media (max-width: 360px) {
  .app-loader { padding: 10px; }
  .app-loader__panel { width: calc(100vw - 20px); min-height: 274px; padding: 28px 20px 34px; }
  .app-loader.app-loader--brand .app-loader__image-frame { width: min(180px, 62vw); height: 100px; }
}

@media (max-height: 560px) {
  .app-loader { padding-block: 10px; }
  .app-loader__panel { min-height: 0; padding-block: 20px 25px; gap: 9px; }
  .app-loader.app-loader--brand .app-loader__image-frame { height: 84px; padding-bottom: 0; }
  .app-loader__webzine-name { font-size: 18px; }
  .app-loader__label { margin-top: 1px; }
}

@media (prefers-reduced-motion: reduce) {
  .app-loader,
  .app-loader__panel,
  .app-loader--scoped { transition: opacity .12s linear; }
  .app-loader__progress::after,
  .app-loader__scoped-indicator i,
  .app-loader__spinner::after,
  .app-spinner-inline { animation: none; }
  .app-loader__progress::after { inset-inline: 27%; width: 46%; }
  .app-loader__scoped-indicator i { opacity: .75; transform: none; }
}

@media (forced-colors: active) {
  .app-loader,
  .app-loader--scoped { background: Canvas; }
  .app-loader__panel { border: 1px solid CanvasText; background: Canvas; box-shadow: none; }
  .app-loader__webzine-name,
  .app-loader__issue-name,
  .app-loader__label,
  .app-loader__spinner { color: CanvasText; }
  .app-loader__progress { border-top: 2px solid Highlight; background: Canvas; }
  .app-loader__progress::after { display: none; }
  .app-loader__scoped-indicator i { background: Highlight; forced-color-adjust: none; }
}