:root {
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --viewer-bg: #2d3033;
  --page-bg: #ffffff;
  --ink: #14181c;
  --glass-bg: rgba(255, 255, 255, 0.2);
  --glass-bg-active: rgba(255, 255, 255, 0.3);
  --glass-line: rgba(255, 255, 255, 0.32);
  --glass-line-soft: rgba(18, 24, 30, 0.14);
  --glass-edge: rgba(18, 24, 30, 0.16);
  --glass-shadow: none;
  --control-text: rgba(18, 24, 30, 0.74);
  --control-muted: rgba(18, 24, 30, 0.52);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--viewer-bg);
  color: var(--ink);
}

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

.controls-dock {
  position: fixed;
  bottom: calc(env(safe-area-inset-bottom) + 10px);
  left: 50%;
  z-index: 20;
  display: flex;
  width: auto;
  max-width: calc(100vw - 16px);
  gap: 7px;
  align-items: center;
  opacity: 0.76;
  backface-visibility: hidden;
  contain: layout style paint;
  transform: translate3d(-50%, 0, 0);
  will-change: opacity, transform;
  transition:
    opacity 150ms ease,
    transform 150ms ease;
}

.controls-dock:hover,
.controls-dock:focus-within {
  opacity: 0.96;
}

.controls-dock.is-hidden {
  opacity: 0;
  pointer-events: none;
  transform: translate3d(-50%, 12px, 0);
}

.segmented {
  display: grid;
  flex: 0 0 auto;
  grid-template-columns: repeat(2, 34px);
  width: auto;
  padding: 3px;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.07)),
    var(--glass-bg);
  background-clip: padding-box;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.32),
    inset 0 -1px 6px rgba(255, 255, 255, 0.04),
    inset 0 0 0 1px rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(24px) saturate(1.7);
  -webkit-backdrop-filter: blur(24px) saturate(1.7);
  clip-path: inset(0 round 999px);
  filter: drop-shadow(0 1px 2px rgba(18, 24, 30, 0.09));
  overflow: hidden;
  transform: translateZ(0);
}

.segment {
  display: inline-grid;
  place-items: center;
  width: 34px;
  min-height: 31px;
  border: 0;
  border-radius: 999px;
  color: var(--control-muted);
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.segment.is-active {
  color: var(--control-text);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.1)),
    var(--glass-bg-active);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.share {
  display: inline-grid;
  flex: 0 0 auto;
  width: 37px;
  min-height: 37px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--glass-edge);
  border-radius: 999px;
  padding: 0;
  color: var(--control-text);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.07)),
    var(--glass-bg);
  background-clip: padding-box;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.32),
    inset 0 -1px 6px rgba(255, 255, 255, 0.04),
    inset 0 0 0 1px rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(24px) saturate(1.7);
  -webkit-backdrop-filter: blur(24px) saturate(1.7);
  clip-path: inset(0 round 999px);
  filter: drop-shadow(0 1px 2px rgba(18, 24, 30, 0.09));
  overflow: hidden;
  transform: translateZ(0);
  text-decoration: none;
}

.icon {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.share:active {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.1)),
    var(--glass-bg-active);
}

.segment:focus-visible,
.share:focus-visible {
  outline: 1px solid rgba(18, 24, 30, 0.22);
  outline-offset: 2px;
}

.viewer {
  display: grid;
  width: min(100vw, 1180px);
  margin: 0 auto;
  gap: 8px;
  padding: 0 0 calc(env(safe-area-inset-bottom) + 58px);
}

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 18;
  display: grid;
  place-items: center;
  background: rgba(45, 48, 51, 0.1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease;
}

body.is-document-loading .loading-overlay {
  opacity: 1;
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .loading-overlay {
    backdrop-filter: blur(8px) saturate(1.08);
    -webkit-backdrop-filter: blur(8px) saturate(1.08);
  }
}

.spinner {
  width: 26px;
  height: 26px;
  border: 2px solid rgba(255, 255, 255, 0.28);
  border-top-color: rgba(255, 255, 255, 0.78);
  border-radius: 999px;
  box-shadow: 0 0 0 1px rgba(18, 24, 30, 0.08);
  animation: spin 760ms linear infinite;
}

.toast {
  position: fixed;
  right: 16px;
  bottom: calc(env(safe-area-inset-bottom) + 62px);
  left: 16px;
  z-index: 24;
  width: fit-content;
  max-width: calc(100vw - 32px);
  margin: 0 auto;
  padding: 8px 12px;
  border: 1px solid rgba(18, 24, 30, 0.14);
  border-radius: 999px;
  color: rgba(18, 24, 30, 0.72);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 4px 18px rgba(18, 24, 30, 0.08);
  font-size: 12px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity 140ms ease,
    transform 140ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

.page {
  position: relative;
  contain: layout paint;
  overflow: hidden;
  width: 100%;
  margin: 0 auto;
  background: var(--page-bg);
}

.page canvas {
  display: block;
  width: 100%;
  height: auto;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.error-panel {
  position: fixed;
  right: 12px;
  bottom: 12px;
  left: 12px;
  z-index: 30;
  max-width: 560px;
  margin: 0 auto;
  padding: 14px 16px;
  border: 1px solid #f1b3ad;
  border-radius: 8px;
  background: #fff5f3;
}

.error-panel h2 {
  margin: 0 0 6px;
  font-size: 16px;
}

.error-panel p {
  margin: 0;
  color: #7f332b;
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 420px) {
  .controls-dock {
    max-width: calc(100vw - 12px);
    gap: 6px;
  }

  .segment {
    width: 33px;
    min-height: 30px;
  }

  .share {
    width: 36px;
    min-height: 36px;
  }

  .icon {
    width: 16px;
    height: 16px;
  }

  .viewer {
    gap: 6px;
    padding-bottom: calc(env(safe-area-inset-bottom) + 56px);
  }
}