:root {
  color-scheme: light;
  --bg: #f7f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --accent: #2563eb;
  --border: #e2e8f0;
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0b1220;
    --surface: #0f172a;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #60a5fa;
    --border: #1f2937;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --surface: #0f172a;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #60a5fa;
  --border: #1f2937;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

:root[data-theme="light"] {
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Plus Jakarta Sans", "Segoe UI", "PingFang SC", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 16px 48px;
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  margin: -80px -16px 24px;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--border);
}

.title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70vw;
}

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

.ghost-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 10px;
  font-size: 14px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, background 120ms ease;
}

.ghost-btn:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  box-shadow: 0 12px 42px rgba(37, 99, 235, 0.15);
}

.ghost-btn:active {
  transform: translateY(0);
}

.reader {
  display: flex;
  flex-direction: column;
  gap: 16px;
  outline: none;
}

.status {
  display: grid;
  place-items: center;
  gap: 12px;
  padding: 48px 16px;
  color: var(--muted);
}

.spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}

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

.image-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-card {
  background: var(--surface);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 150ms ease;
}

.page-card:hover {
  transform: translateY(-2px);
}

.page-card img {
  width: 100%;
  display: block;
  height: auto;
  background: color-mix(in srgb, var(--bg) 80%, var(--surface));
  object-fit: contain;
}

.page-index {
  font-size: 12px;
  color: var(--muted);
  padding: 10px 12px;
  text-align: right;
}

.error {
  color: #ef4444;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 768px) {
  .page {
    padding: 72px 12px 36px;
  }

  .toolbar {
    margin: -72px -12px 20px;
  }

  .title {
    max-width: 62vw;
  }
}