:root {
  color-scheme: dark;
  --background: #08090b;
  --surface: #111318;
  --surface-raised: #171a20;
  --border: #2b2f38;
  --text: #f4f5f7;
  --muted: #9da3ae;
  --accent: #f04444;
  --accent-hover: #ff5c5c;
  --focus: #ffce54;
  --header-height: 70px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(240, 68, 68, 0.09), transparent 28rem),
    var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
select {
  font: inherit;
}

button,
select,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: var(--header-height);
  padding: 0 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 9, 11, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 0.96rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  transform: skew(-7deg);
  border-radius: 7px;
  background: var(--accent);
  color: white;
  font-size: 0.8rem;
  letter-spacing: -0.05em;
  box-shadow: 0 7px 20px rgba(240, 68, 68, 0.24);
}

.reader-status {
  min-width: 0;
  padding: 0 24px;
  overflow: hidden;
  color: var(--muted);
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-status strong {
  color: var(--text);
}

.header-actions {
  display: flex;
  gap: 8px;
}

.status-divider {
  padding: 0 8px;
  color: #4f5561;
}

.icon-button,
.compact-button,
.primary-button,
.page-arrow {
  border: 0;
  cursor: pointer;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-raised);
  color: var(--text);
  font-weight: 700;
}

.icon-button:hover,
.compact-button:hover:not(:disabled) {
  border-color: #4a505c;
  background: #20242c;
}

.reader {
  width: min(100%, 1260px);
  margin: 0 auto;
  padding: 22px 24px 38px;
}

.control-panel {
  display: grid;
  grid-template-columns: minmax(220px, 1.5fr) minmax(150px, 0.7fr) minmax(120px, 0.5fr) auto;
  gap: 14px;
  align-items: end;
  margin-bottom: 18px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(17, 19, 24, 0.86);
}

.field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.field > span,
.eyebrow {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.field select {
  width: 100%;
  height: 43px;
  padding: 0 36px 0 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #0d0f13;
  color: var(--text);
  cursor: pointer;
}

.chapter-actions {
  display: flex;
  gap: 8px;
}

.compact-button {
  min-height: 43px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #0d0f13;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 750;
  white-space: nowrap;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.36;
}

.stage {
  position: relative;
  display: grid;
  min-height: min(78vh, 900px);
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 14px;
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.015) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.015) 75%),
    #050608;
  background-size: 24px 24px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

.comic-page {
  display: block;
  max-width: calc(100% - 130px);
  max-height: calc(100vh - 210px);
  margin: 0 auto;
  object-fit: contain;
  box-shadow: 0 14px 50px rgba(0, 0, 0, 0.55);
  user-select: none;
  transform-origin: 50% 50%;
  transition: transform 320ms ease, transform-origin 320ms ease;
}

.reader.superzoom-active .stage {
  cursor: zoom-in;
}

.reader.superzoom-active .comic-page {
  transform: scale(var(--superzoom-scale, 2.35));
  transform-origin: var(--superzoom-x, 25%) var(--superzoom-y, 16%);
}

.loading-state,
.error-state {
  display: grid;
  max-width: 420px;
  padding: 32px;
  place-items: center;
  text-align: center;
}

.loading-state p,
.error-state p {
  margin: 12px 0 0;
  color: var(--muted);
}

.spinner {
  width: 34px;
  height: 34px;
  border: 3px solid #343943;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.page-arrow {
  position: absolute;
  z-index: 4;
  top: 50%;
  display: grid;
  width: 52px;
  height: 70px;
  place-items: center;
  transform: translateY(-50%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(15, 17, 21, 0.82);
  color: white;
  font-size: 2.2rem;
  backdrop-filter: blur(9px);
}

.page-arrow:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--accent);
}

.page-arrow-left { left: 18px; }
.page-arrow-right { right: 18px; }

.exit-fullscreen-button {
  position: absolute;
  z-index: 8;
  top: 14px;
  left: 14px;
  display: none;
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  background: rgba(10, 11, 14, 0.86);
  color: white;
  cursor: pointer;
  font-weight: 800;
  backdrop-filter: blur(9px);
}

.reader:fullscreen .exit-fullscreen-button,
.reader.is-pseudo-fullscreen .exit-fullscreen-button {
  display: block;
}

.superzoom-controls {
  position: absolute;
  z-index: 7;
  right: 50%;
  bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 6px 9px;
  transform: translateX(50%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  background: rgba(10, 11, 14, 0.9);
  color: white;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
}

.superzoom-controls button {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 0;
  border-radius: 8px;
  background: #272b33;
  color: white;
  cursor: pointer;
  font-size: 1.2rem;
}

.superzoom-controls button:hover:not(:disabled) {
  background: var(--accent);
}

#panelCounter,
#zoomLevel {
  min-width: 78px;
  color: #e7e9ed;
  font-size: 0.78rem;
  font-weight: 800;
  text-align: center;
}

#zoomLevel { min-width: 46px; }

.zoom-divider {
  width: 1px;
  height: 24px;
  margin: 0 2px;
  background: #3b404a;
}

.boundary-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
  padding: 22px 24px;
  border: 1px solid rgba(240, 68, 68, 0.4);
  border-radius: 14px;
  background: linear-gradient(100deg, rgba(240, 68, 68, 0.16), rgba(23, 26, 32, 0.8));
}

.boundary-panel h2 {
  margin: 5px 0 0;
  font-size: clamp(1.15rem, 2vw, 1.55rem);
}

.primary-button {
  min-height: 44px;
  padding: 0 18px;
  border-radius: 9px;
  background: var(--accent);
  color: white;
  font-weight: 850;
}

.primary-button:hover {
  background: var(--accent-hover);
}

.reader-footer {
  display: flex;
  justify-content: space-between;
  padding: 14px 4px 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.reader:fullscreen,
.reader.is-pseudo-fullscreen {
  width: 100%;
  max-width: none;
  height: 100%;
  padding: 0;
  background: #000;
}

.reader:fullscreen .control-panel,
.reader:fullscreen .reader-footer,
.reader:fullscreen .boundary-panel,
.reader.is-pseudo-fullscreen .control-panel,
.reader.is-pseudo-fullscreen .reader-footer,
.reader.is-pseudo-fullscreen .boundary-panel {
  display: none;
}

.reader:fullscreen .stage,
.reader.is-pseudo-fullscreen .stage {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  border: 0;
  border-radius: 0;
  background: #000;
}

.reader:fullscreen .comic-page,
.reader.is-pseudo-fullscreen .comic-page {
  width: auto;
  height: auto;
  max-width: 100vw;
  max-height: 100vh;
  max-height: 100dvh;
  object-fit: contain;
  box-shadow: none;
  transform: none !important;
  transform-origin: center !important;
  transition: none !important;
}

.reader:fullscreen .superzoom-controls,
.reader.is-pseudo-fullscreen .superzoom-controls {
  display: none !important;
}

.has-pseudo-fullscreen,
.has-pseudo-fullscreen body {
  overflow: hidden;
  overscroll-behavior: none;
}

.reader.is-pseudo-fullscreen {
  position: fixed;
  z-index: 1000;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  padding: 0;
  background: #000;
}

@media (max-width: 960px) {
  .control-panel {
    grid-template-columns: 1fr 1fr 0.7fr;
  }

  .chapter-actions {
    grid-column: 1 / -1;
  }

  .chapter-actions .compact-button {
    flex: 1;
  }
}

@media (max-width: 680px) {
  :root { --header-height: 60px; }

  .topbar {
    grid-template-columns: 1fr auto;
    padding: 0 14px;
  }

  .reader-status { display: none; }
  .button-label { display: none; }
  .icon-button { padding: 0 12px; }
  .header-actions { gap: 6px; }

  .reader {
    padding: 12px 10px 28px;
  }

  .control-panel {
    grid-template-columns: 1fr 0.65fr;
    gap: 10px;
    padding: 12px;
  }

  .field-collection { grid-column: 1 / -1; }
  .field-page { grid-column: auto; }
  .compact-button { white-space: normal; }

  .stage {
    min-height: 65vh;
    border-radius: 10px;
  }

  .comic-page {
    max-width: 100%;
    max-height: calc(100vh - 180px);
  }

  .page-arrow {
    top: auto;
    bottom: 12px;
    width: 48px;
    height: 48px;
    transform: none;
    border-radius: 50%;
    background: rgba(15, 17, 21, 0.9);
  }

  .page-arrow-left { left: 12px; }
  .page-arrow-right { right: 12px; }

  .superzoom-controls {
    bottom: 10px;
    max-width: calc(100% - 116px);
    gap: 5px;
  }

  #panelCounter { min-width: 68px; }
  .zoom-divider { display: none; }

  .boundary-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .keyboard-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .spinner { animation-duration: 1.8s; }
}

/* Full-screen controls stay compact and overlay the artwork on every device. */
.reader:fullscreen .page-arrow,
.reader.is-pseudo-fullscreen .page-arrow {
  top: 50%;
  bottom: auto;
  width: 42px;
  height: 58px;
  transform: translateY(-50%);
  border: 0;
  border-radius: 12px;
  background: rgba(4, 5, 7, 0.38);
  font-size: 2rem;
  opacity: 0.58;
  backdrop-filter: blur(5px);
}

.reader:fullscreen .page-arrow:hover:not(:disabled),
.reader:fullscreen .page-arrow:focus-visible,
.reader.is-pseudo-fullscreen .page-arrow:hover:not(:disabled),
.reader.is-pseudo-fullscreen .page-arrow:focus-visible {
  background: rgba(4, 5, 7, 0.78);
  opacity: 1;
}

.reader:fullscreen .page-arrow-left,
.reader.is-pseudo-fullscreen .page-arrow-left { left: max(8px, env(safe-area-inset-left)); }
.reader:fullscreen .page-arrow-right,
.reader.is-pseudo-fullscreen .page-arrow-right { right: max(8px, env(safe-area-inset-right)); }

.reader:fullscreen .exit-fullscreen-button,
.reader.is-pseudo-fullscreen .exit-fullscreen-button {
  top: max(10px, env(safe-area-inset-top));
  right: max(10px, env(safe-area-inset-right));
  left: auto;
  width: 40px;
  height: 40px;
  min-height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(4, 5, 7, 0.46);
  font-size: 0.8rem;
  opacity: 0.66;
}

.reader:fullscreen .exit-fullscreen-button:hover,
.reader:fullscreen .exit-fullscreen-button:focus-visible,
.reader.is-pseudo-fullscreen .exit-fullscreen-button:hover,
.reader.is-pseudo-fullscreen .exit-fullscreen-button:focus-visible {
  background: rgba(4, 5, 7, 0.82);
  opacity: 1;
}