/* Reader-only overrides: the catalog and admin keep their existing theme. */
.flipbook-container [hidden] { display: none !important; }
#pages-dialog { color-scheme: light; }
.flipbook-container button, #pages-dialog button, #pages-dialog input { font-family: inherit; }
.flipbook-container {
    --desk: #e8ece9;
    --chrome: #f8faf8;
    --ink: #263d37;
    --muted: #63746e;
    --line: #d5ddd7;
    --accent: #c74e17;
    background: var(--desk);
    color: var(--ink);
    isolation: isolate;
}
.flipbook-container[data-reader-theme="dark"] {
    --desk: #202825;
    --chrome: #28332e;
    --ink: #edf3ee;
    --muted: #adbdb2;
    --line: #435149;
    --accent: #ffac75;
}
.flipbook-container::before { background: none; }
.top-bar, .toolbar-responsive {
    background: var(--chrome);
    border-color: var(--line);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}
.top-bar { padding: 14px 28px; }
.top-bar-content { max-width: none; gap: 16px; }
.brand-section { min-width: 0; gap: 20px; }
.reader-brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; text-decoration: none; color: var(--ink); }
.reader-brand .brand-logo { width: 44px; height: 44px; filter: none; }
.reader-brand-name { font-size: 17px; font-weight: 700; line-height: 1.2; }
.reader-brand-name small { display: block; font-size: 9px; font-weight: 500; margin-top: 5px; color: var(--muted); }
.brand-divider { background: var(--line); height: 30px; }
.book-title { color: var(--muted); font-size: 13px; font-weight: 500; max-width: 35rem; letter-spacing: 0; }
.reader-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.toolbar-button { color: var(--muted); border-radius: 6px; width: 42px; height: 42px; flex-shrink: 0; }
.toolbar-button:hover, .toolbar-button:active, .toolbar-button.active { color: var(--accent); background: var(--desk); border-color: var(--line); transform: none; }
.toolbar-button:disabled, .toolbar-button:disabled:hover { color: var(--muted); opacity: .3; background: none; cursor: default; }
.toolbar-button:focus-visible, .edge-nav:focus-visible, .reader-brand:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.flipbook-main { min-height: 0; padding: 36px 64px 40px; }
#flipbook-viewport { position: relative; }
#flipbook {
    /* Absolute centering lets Turn.js's cover offset move the full distance. */
    position: absolute !important;
    left: 50%; top: 50%; transform: translate(-50%, -50%) !important;
    filter: drop-shadow(0 22px 18px rgba(12, 28, 18, .20)) drop-shadow(0 3px 2px rgba(0, 0, 0, .16));
}
#flipbook .page, #flipbook .hard { background-color: #fff; box-shadow: 0 1px 0 #d7d8cc, 0 3px 0 #f9f9f4, 0 4px 0 #c5cbbf, 0 6px 0 #eeeeea; }
#flipbook .page img, #flipbook .hard img { width: 100%; height: 100%; object-fit: contain; }
.paper-sheet { position: relative; }
.paper-light { position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 1px rgba(0,0,0,.14); }
.page.even .paper-light { background: linear-gradient(to left, rgba(24,33,21,.13), rgba(24,33,21,.025) 5%, transparent 14%); }
.page.odd .paper-light { background: linear-gradient(to right, rgba(24,33,21,.12), rgba(24,33,21,.02) 5%, transparent 14%); }
.hard .paper-light { background: none; }
.edge-nav {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 20;
    width: 44px; height: 56px; border: 1px solid var(--line); border-radius: 6px;
    background: var(--chrome); color: var(--ink); cursor: pointer; transition: background .2s;
}
.edge-nav:hover { background: var(--desk); color: var(--accent); }
.edge-nav:disabled { opacity: .25; cursor: default; }
.edge-prev { left: 18px; } .edge-next { right: 18px; }
.toolbar-responsive { position: relative; padding: 12px 28px max(12px, env(safe-area-inset-bottom)); }
.toolbar-content { max-width: 1100px; }
.page-info { color: var(--ink); background: none; border: 0; min-width: 90px; font-size: 13px; font-variant-numeric: tabular-nums; }
.page-info .page-label { color: var(--muted); letter-spacing: 0; }
.toolbar-separator { background: var(--line); }
.zoom-level-display { background: var(--desk); color: var(--ink); border: 1px solid var(--line); }
.zoom-slider { background: var(--line); }
#reading-progress { position: absolute; top: -4px; left: 0; width: 100%; margin: 0; height: 8px; accent-color: #cf571f; cursor: pointer; }
#resume-reading { position: absolute; bottom: 12px; z-index: 25; border: 1px solid var(--line); border-radius: 6px; padding: 9px 14px; background: var(--chrome); color: var(--ink); box-shadow: 0 3px 12px #0001; font-size: 12px; }
.flipbook-loader { background: var(--desk); color: var(--ink); }
.flipbook-loader-text { color: var(--muted); }
.reader-error { position: absolute; inset: 0; z-index: 30; padding: 24px; flex-direction: column; justify-content: center; align-items: center; text-align: center; background: var(--desk); gap: 16px; }
.reader-error:not([hidden]) { display: flex; }
.reader-error > i { font-size: 36px; color: var(--accent); }
.reader-error h1 { font-size: 24px; font-weight: 600; }
.reader-error p { max-width: 360px; color: var(--muted); font-size: 14px; }
.reader-error button { border: 1px solid var(--line); border-radius: 6px; padding: 10px 24px; background: var(--chrome); }
.reader-error a { color: var(--accent); font-size: 14px; }
#pages-dialog { padding: 0; width: min(760px, calc(100% - 32px)); max-height: calc(100dvh - 48px); border: 1px solid #cdd7ce; border-radius: 8px; background: #f7f9f6; color: #253d31; box-shadow: 0 24px 70px #0004; }
#pages-dialog::backdrop { background: rgba(17,28,23,.65); backdrop-filter: blur(4px); }
#pages-dialog[data-reader-theme="dark"] { color-scheme: dark; background: #232c28; color: #e8efea; border-color: #48584e; }
#pages-dialog[data-reader-theme="dark"] .toolbar-button { color: #e8efea; }
.pages-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; border-bottom: 1px solid #d8e1d9; }
.pages-header h2 { font-size: 18px; font-weight: 600; }
.pages-header h2 span { font-size: 12px; color: #657668; margin-left: 8px; }
#pages-dialog .toolbar-button { color: #253d31; }
#page-jump { display: flex; align-items: center; gap: 12px; padding: 16px 24px; font-size: 13px; }
#page-number { width: 80px; padding: 8px; border: 1px solid #bac9bd; border-radius: 4px; background: #fff; color: #253d31; }
#page-jump button { width: 36px; height: 36px; border: 1px solid #bac9bd; border-radius: 4px; background: #dce7df; color: #253d31; }
.page-thumbnails { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 20px; padding: 8px 24px 24px; }
.page-thumbnail { min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 9px; border: 2px solid transparent; padding: 6px; border-radius: 4px; font-size: 12px; background: transparent; color: inherit; cursor: pointer; }
.page-thumbnail:hover, .page-thumbnail[aria-current="page"] { background: #e8eee5; border-color: #b64f22; }
#pages-dialog[data-reader-theme="dark"] .page-thumbnail:hover,
#pages-dialog[data-reader-theme="dark"] .page-thumbnail[aria-current="page"] { background: #36493e; border-color: #ffac75; }
#pages-dialog[data-reader-theme="dark"] .pages-header { border-color: #48584e; }
#pages-dialog[data-reader-theme="dark"] .pages-header h2 span { color: #adbdb2; }
.page-thumbnail img { width: 100%; aspect-ratio: 3/4; object-fit: contain; background: white; box-shadow: 0 2px 7px #0002; }
#reader-notice { position: fixed; z-index: 100; bottom: 94px; left: 50%; transform: translateX(-50%); max-width: calc(100% - 32px); padding: 10px 18px; border-radius: 6px; background: #223d30; color: #fff; font-size: 13px; pointer-events: none; opacity: 0; transition: opacity .2s; text-align: center; }
#reader-notice.visible { opacity: 1; }
@media (max-width: 900px) {
    .top-bar { padding: 10px 16px; }
    .reader-brand-name { font-size: 15px; }
    .brand-section { gap: 12px; }
    .book-title { max-width: 24vw; }
    .flipbook-main { padding: 20px 54px 28px; }
    .edge-prev { left: 6px; } .edge-next { right: 6px; }
}
@media (max-width: 640px) {
    .top-bar { padding: max(8px, env(safe-area-inset-top)) 12px 8px; }
    .reader-brand .brand-logo { width: 34px; height: 34px; }
    .reader-brand-name { font-size: 13px; }
    .reader-brand-name small { font-size: 7px; }
    .brand-section { gap: 6px; flex-wrap: wrap; }
    .book-title { flex-basis: 100%; max-width: 100%; font-size: 10px; padding-left: 44px; }
    .reader-actions { gap: 0; }
    .reader-actions .toolbar-button { width: 36px; min-width: 36px; height: 44px; font-size: 13px; }
    .flipbook-main { padding: 12px 10px 30px; }
    .edge-nav { display: none; }
    .toolbar-responsive { padding: 10px 10px max(10px, env(safe-area-inset-bottom)); }
    .toolbar-button { width: 40px; min-width: 40px; height: 44px; }
    .toolbar-left { gap: 0; }
    .toolbar-left .toolbar-separator { display: none; }
    .page-info { min-width: 62px; font-size: 12px; padding: 4px; }
    #resume-reading { bottom: 5px; font-size: 11px; }
    .page-thumbnails { gap: 12px; grid-template-columns: repeat(3, minmax(0, 1fr)); padding: 8px 16px 20px; }
}
@media (max-height: 500px) and (orientation: landscape) {
    .top-bar { padding: 4px 16px; }
    .reader-brand .brand-logo { height: 28px; width: 28px; }
    .reader-brand-name small { display: none; }
    .flipbook-main { padding: 8px 50px 14px; }
    .toolbar-responsive { padding: 5px 16px; }
}
@media (prefers-reduced-motion: reduce) {
    .flipbook-container *, #reader-notice { animation: none !important; transition: none !important; }
    .animate-fade-in { opacity: 1; }
}
.page-retry {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 20;
    max-width: 85%;
    padding: 12px 16px;
    border: 1px solid #c8d5ce;
    border-radius: 6px;
    background: #fff;
    color: #244b3d;
    font: 600 14px/1.4 Inter, sans-serif;
    cursor: pointer;
}