.viewer-page {
  --viewer-base: #181818;
  --viewer-glass: rgba(52, 52, 52, .76);
  --viewer-ink: #f4f4f4;
  --viewer-muted: #bfbfbf;
  --viewer-accent: #e7c59a;
  --viewer-accent-surface: rgba(231, 197, 154, .17);
  --viewer-lift: 0 6px 22px rgba(0, 0, 0, .18);
  --viewer-gutter: clamp(16px, 2.7vw, 38px);
  background: var(--viewer-base);
  color: var(--viewer-ink);
}

.viewer-page .viewer-page-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr) minmax(0, 1fr);
  min-height: 66px;
  padding-inline: max(var(--viewer-gutter), env(safe-area-inset-left)) max(var(--viewer-gutter), env(safe-area-inset-right));
  background: #222;
  border-bottom: 1px solid transparent;
}

.viewer-page .viewer-page-title { color: var(--viewer-ink); text-align: center; }
.viewer-page .viewer-page-title strong { font: 600 15px/1.45 var(--sans); letter-spacing: .35px; }

.viewer-page .viewer-page-header button {
  justify-self: start;
  min-height: 44px;
  padding: 8px 15px;
  color: var(--viewer-ink);
  background: rgba(255, 255, 255, .07);
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
}

.viewer-page #viewer-page-fullscreen { justify-self: end; }
.viewer-page .viewer-page-header button svg { color: var(--viewer-accent); }

.viewer-page .viewer-shell {
  border-radius: clamp(14px, 2.1vw, 28px);
  background:
    radial-gradient(ellipse at 53% 41%, rgba(90, 90, 90, .28), transparent 65%),
    linear-gradient(155deg, #262626, #191919 74%);
}

/* Blur only the small overlays over the scene. The tinted surface also works without it. */
.viewer-page :is(.exhibit-info, .music-button, .view-modes, .view-actions, .loading-card) {
  background: var(--viewer-glass);
  border: 1px solid transparent;
  box-shadow: var(--viewer-lift);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.viewer-page .exhibit-info {
  top: 24px;
  left: var(--viewer-gutter);
  width: fit-content;
  max-width: min(680px, calc(100% - var(--viewer-gutter) - var(--viewer-gutter) - 56px));
  padding: 7px 17px;
  border-radius: 24px;
  pointer-events: none;
}

.viewer-page .exhibit-info h2 {
  color: var(--viewer-ink);
  font: 600 clamp(17px, 2.1vw, 24px)/1.38 var(--sans);
  letter-spacing: .2px;
}

.viewer-page .viewer-top { top: 24px; right: var(--viewer-gutter); }
.viewer-page .music-button { width: 46px; height: 46px; border-radius: 50%; color: var(--viewer-ink); }
.viewer-page .music-button:disabled { opacity: .5; }
.viewer-page .music-button.active {
  background: #4b3c2e;
  border-color: transparent;
  color: var(--viewer-accent);
  box-shadow: var(--viewer-lift);
}

.viewer-page .viewer-toolbar { left: var(--viewer-gutter); right: var(--viewer-gutter); bottom: 20px; gap: 10px; }
.viewer-page :is(.view-modes, .view-actions) { border-radius: 999px; padding: 4px; gap: 2px; }
.viewer-page :is(.view-modes, .view-actions) button {
  min-height: 44px;
  padding: 7px 13px;
  border-radius: 999px;
  color: var(--viewer-ink);
  background: transparent;
  font-size: 13px;
  font-weight: 500;
}

.viewer-page .view-actions button { min-width: 44px; padding-inline: 8px; }
.viewer-page :is(.view-modes, .view-actions) svg { width: 17px; height: 17px; }
.viewer-page .view-modes button.active {
  border-radius: 999px;
  color: var(--viewer-accent);
  background: var(--viewer-accent-surface);
}
.viewer-page .view-actions>span { background: transparent; }

.viewer-page .exhibit-bottom {
  padding-inline: max(var(--viewer-gutter), env(safe-area-inset-left)) max(var(--viewer-gutter), env(safe-area-inset-right));
  gap: 16px;
  background: #242424;
  border-top: 1px solid transparent;
}

.viewer-page .danmaku-form { gap: 7px; }
.viewer-page .danmaku-form input {
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  box-shadow: inset 0 1px 4px rgba(0, 0, 0, .13);
  color: var(--viewer-ink);
}
.viewer-page .danmaku-form input::placeholder { color: var(--viewer-muted); }
.viewer-page .danmaku-form button {
  min-height: 44px;
  padding: 8px 17px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--viewer-accent-surface);
  color: var(--viewer-accent);
  font-weight: 600;
}

.viewer-page .social-actions {
  padding: 3px;
  gap: 3px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: rgba(255, 255, 255, .055);
}
.viewer-page :is(.social-actions button, .view-count) {
  justify-content: center;
  min-height: 42px;
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--viewer-ink);
  font-size: 13px;
}
.viewer-page .view-count { color: var(--viewer-muted); }
.viewer-page #danmaku-toggle[aria-pressed="true"] { background: var(--viewer-accent-surface); color: var(--viewer-accent); }
.viewer-page #danmaku-toggle[aria-pressed="false"] { opacity: 1; color: var(--viewer-muted); }
.viewer-page .social-actions button.liked { color: #edb19d; background: rgba(199, 118, 90, .18); text-shadow: none; }
.viewer-page .social-actions button.liked>svg { fill: rgba(199, 118, 90, .42); }

.viewer-page .danmaku-line {
  padding-inline: 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: rgba(33, 33, 33, .78);
  color: var(--viewer-ink);
  line-height: 32px;
  text-shadow: 0 1px 3px #191919;
}
.viewer-page .danmaku-line.own { color: var(--viewer-accent); background: rgba(65, 65, 65, .87); }

.viewer-page .loading-overlay { padding-bottom: clamp(76px, 12dvh, 125px); }
.viewer-page .loading-card { width: clamp(250px, 36vw, 340px); border-radius: 22px; }
.viewer-page .loading-heading, .viewer-page .loading-overlay #load-label { color: var(--viewer-ink); }
.viewer-page .loading-overlay #load-percent { color: var(--viewer-accent); }
.viewer-page .load-progress { height: 4px; background: rgba(255, 255, 255, .13); }
.viewer-page .load-progress>span {
  border-radius: inherit;
  background: linear-gradient(90deg, #b58a5c, #e7c59a);
  box-shadow: none;
}

.viewer-page .viewer-error { background: rgba(26, 26, 26, .92); color: var(--viewer-ink); }
.viewer-page .viewer-error strong { font: 600 23px/1.45 var(--sans); }
.viewer-page .viewer-error p { color: var(--viewer-muted); }
.viewer-page .viewer-error .button {
  border-color: transparent;
  border-radius: 999px;
  background: var(--viewer-accent-surface);
  color: var(--viewer-accent);
}

.viewer-page :is(button, input):focus-visible { outline: 2px solid var(--viewer-accent); outline-offset: 2px; }
.viewer-page .heritage-canvas:focus-visible { outline: 2px solid var(--viewer-accent) !important; outline-offset: -3px; }

@media (hover: hover) and (pointer: fine) {
  .viewer-page :is(.viewer-page-header button, .view-actions button, .view-modes button, .music-button, .social-actions button):not(:disabled):hover {
    background: rgba(231, 197, 154, .14);
    border-color: transparent;
    color: var(--viewer-ink);
  }
  .viewer-page :is(.view-modes button.active, .music-button.active):not(:disabled):hover {
    background: rgba(231, 197, 154, .24);
    color: var(--viewer-accent);
  }
  .viewer-page .social-actions button.liked:not(:disabled):hover { background: rgba(199, 118, 90, .26); color: #f4c7b8; }
  .viewer-page .danmaku-form button:not(:disabled):hover { background: rgba(231, 197, 154, .26); box-shadow: none; }
}

@media (max-width: 600px) {
  .viewer-page .viewer-page-header {
    grid-template-columns: auto minmax(0, 1fr) auto;
    min-height: 62px;
    gap: 8px;
    padding-inline: max(12px, env(safe-area-inset-left)) max(12px, env(safe-area-inset-right));
  }
  .viewer-page .viewer-page-header button { padding-inline: 10px; font-size: 12px; }
  .viewer-page .viewer-page-title strong { font-size: clamp(12px, 3.6vw, 15px); }
  .viewer-page .exhibit-info { top: 16px; padding: 7px 13px; }
  .viewer-page .exhibit-info h2 { font-size: clamp(16px, 4.6vw, 20px); }
  .viewer-page .viewer-top { top: 13px; }
  .viewer-page .music-button { width: 44px; height: 44px; }
  .viewer-page .viewer-toolbar { bottom: 13px; gap: 7px; }
  .viewer-page .view-modes { width: min(100%, 300px); }
  .viewer-page .exhibit-bottom { padding-block: 8px calc(8px + env(safe-area-inset-bottom)); gap: 7px; min-height: 108px; }
  .viewer-page .danmaku-form input { font-size: 16px; }
  .viewer-page .social-actions { justify-content: space-between; }
  .viewer-page :is(.social-actions button, .view-count) { padding-inline: 6px; font-size: 12px; }
  .viewer-page .loading-overlay { padding-bottom: 112px; }
}

@media (max-height: 520px) and (orientation: landscape) {
  .viewer-page .viewer-page-header { min-height: 50px; }
  .viewer-page .viewer-page-header button { min-height: 38px; }
  .viewer-page .exhibit-info, .viewer-page .viewer-top { top: 11px; }
  .viewer-page .exhibit-info h2 { font-size: 18px; }
  .viewer-page .viewer-toolbar { bottom: 9px; }
  .viewer-page .view-modes { width: auto; }
  .viewer-page :is(.view-modes, .view-actions) button { min-height: 38px; }
  .viewer-page .exhibit-bottom { min-height: 52px; }
  .viewer-page .loading-overlay { padding-bottom: 59px; }
}

@media (prefers-reduced-transparency: reduce) {
  .viewer-page { --viewer-glass: #353535; }
  .viewer-page :is(.exhibit-info, .music-button, .view-modes, .view-actions, .loading-card) {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .viewer-page :is(.viewer-page-header button, .view-modes button, .view-actions button, .music-button, .social-actions button, .danmaku-form button, .loading-card) {
    transition-duration: .01ms !important;
    transform: none !important;
  }
}