:root {
  --bg-main: #0a0a0a;
  --bg-card: #1a1a1a;
  --text-primary: #f5f5f5;
  --text-secondary: #b0b0b0;
  --accent-red: #d32f2f;
  --border-color: #333333;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { min-width: 0; background: var(--bg-main); }

body {
  min-width: 0;
  margin: 0;
  color: var(--text-primary);
  background: var(--bg-main);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button { font: inherit; }

button:focus-visible {
  outline: 3px solid #f04a4a;
  outline-offset: 2px;
}

.history-reader {
  width: min(100%, 1120px);
  min-width: 0;
  margin: 0 auto;
  padding: clamp(16px, 3vw, 36px);
}

.reader-header {
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-red);
  border-radius: 3px;
  background: var(--bg-card);
}

.reader-kicker {
  margin: 0 0 6px;
  color: #f04a4a;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 3.2rem);
  line-height: 1.08;
}

.reader-scope {
  max-width: 72ch;
  margin: 14px 0 0;
  color: var(--text-secondary);
}

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

.reader-controls {
  display: grid;
  gap: 12px;
  margin: 16px 0;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  background: #111417;
}

.reader-actions,
.reader-thumbnails {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.reader-actions button,
.reader-thumbnail {
  min-width: 44px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid #687178;
  border-radius: 2px;
  color: var(--text-primary);
  background: #171b1f;
  cursor: pointer;
  transition: border-color 140ms ease, background-color 140ms ease;
}

.reader-actions button:hover,
.reader-thumbnail:hover {
  border-color: var(--accent-red);
  background: #20252a;
}

.reader-actions button:disabled {
  color: #747c82;
  cursor: not-allowed;
  opacity: 0.75;
}

.reader-thumbnail {
  padding-inline: 10px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-weight: 800;
}

.reader-thumbnail[aria-current="page"] {
  border-color: #f04a4a;
  background: var(--accent-red);
}

#reader-status {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 700;
}

.reader-pages { min-width: 0; }

.reader-page {
  margin: 0;
  padding: clamp(8px, 2vw, 18px);
  border: 1px solid #42484d;
  border-radius: 3px;
  background: #050607;
  box-shadow: 0 24px 58px rgba(0, 0, 0, 0.42);
}

.reader-page[hidden] { display: none; }

.reader-page-canvas {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #000;
}

.reader-page-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.reader-page figcaption {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.reader-note {
  margin-top: 16px;
  padding: 14px 16px;
  border-left: 2px solid var(--accent-red);
  color: var(--text-secondary);
  background: var(--bg-card);
}

.reader-note p { margin: 0; }

.reader-persistent-scope {
  margin: 14px 0 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.reader-persistent-scope strong { color: var(--text-primary); }

.history-reader.is-expanded,
.history-reader:fullscreen {
  position: fixed;
  z-index: 1000;
  inset: 0;
  width: 100%;
  max-width: none;
  overflow: auto;
  background: var(--bg-main);
}

.history-reader.is-expanded .reader-header,
.history-reader:fullscreen .reader-header,
.history-reader.is-expanded .reader-note,
.history-reader:fullscreen .reader-note {
  display: none;
}

.history-reader.is-expanded .reader-page,
.history-reader:fullscreen .reader-page {
  max-width: min(100%, calc(100vh - 150px));
  margin: 0 auto;
}

@media (max-width: 560px) {
  .history-reader { padding: 12px; }
  .reader-header { padding: 16px; }
  .reader-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reader-actions button { width: 100%; padding-inline: 8px; }
  .reader-thumbnails { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .reader-thumbnail { width: 100%; }
}

@media (max-width: 360px) {
  h1 { font-size: 1.5rem; }
  .history-reader { padding: 8px; }
  .reader-controls { padding: 8px; }
  .reader-page { padding: 5px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}

@page { margin: 10mm; }

@media print {
  :root { color-scheme: light; }
  html,
  body { min-width: 0; color: #000; background: #fff; }
  .history-reader { width: 100%; margin: 0; padding: 0; }
  .reader-header,
  .reader-controls,
  .reader-note { display: none !important; }
  .reader-page,
  .reader-page[hidden] {
    display: block !important;
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
    break-after: page;
    page-break-after: always;
  }
  .reader-page:last-child { break-after: auto; page-break-after: auto; }
  .reader-page figcaption { color: #222; }
  .reader-persistent-scope {
    margin: 0 0 5mm;
    color: #111;
  }
  .reader-persistent-scope strong { color: #000; }
}