/* ==========================================================================
   Lector en línea de Goote Studio (.gsr-*)
   Temas (claro, sepia, gris, oscuro, negro), lectura por desplazamiento o por páginas, subrayados y notas, PDF con zoom.
   Usa los tokens base de goote-studio.css (--gs-font, --gs-font-display).
   ========================================================================== */

.gsr {
  --r-bg: #FBFAF7; --r-ink: #1F1D1A; --r-muted: #6B655B; --r-line: #E6E1D6; --r-panel: #FFFFFF; --r-accent: #6D1A2B; --r-on-accent: #F6EEDD;
  --r-size: 19px; --r-line-height: 1.65; --r-width: 38rem; --r-font: 'PT Serif', Georgia, serif; --r-align: left; --r-para: 1em;
  --r-bar-h: 56px; --r-foot-h: 64px; --r-dim: 0;
  margin: 0; min-height: 100vh; background: var(--r-bg); color: var(--r-ink); font-family: var(--gs-font);
  -webkit-font-smoothing: antialiased; transition: background .2s, color .2s;
}
.gsr[data-theme="sepia"] { --r-bg: #F4ECD8; --r-ink: #3B2F22; --r-muted: #75664F; --r-line: #E0D3B6; --r-panel: #FAF4E4; --r-accent: #7A2A32; }
.gsr[data-theme="gray"] { --r-bg: #2A2A2D; --r-ink: #E4E2DD; --r-muted: #A9A6A0; --r-line: #3E3E42; --r-panel: #333337; --r-accent: #E58A9E; --r-on-accent: #2A0F16; color-scheme: dark; }
.gsr[data-theme="dark"] { --r-bg: #141312; --r-ink: #E7E1D6; --r-muted: #A39C90; --r-line: #2E2C29; --r-panel: #1E1D1B; --r-accent: #D5667E; --r-on-accent: #1A0E12; color-scheme: dark; }
.gsr[data-theme="black"] { --r-bg: #000000; --r-ink: #D9D4CB; --r-muted: #98928A; --r-line: #25231F; --r-panel: #0E0D0C; --r-accent: #D5667E; --r-on-accent: #1A0E12; color-scheme: dark; }
.gsr[data-font="sans"] { --r-font: 'Inter', system-ui, sans-serif; }
.gsr[data-font="dyslexic"] { --r-font: 'Verdana', 'Trebuchet MS', sans-serif; letter-spacing: .02em; word-spacing: .08em; }
.gsr *, .gsr *::before, .gsr *::after { box-sizing: border-box; }
.gsr :focus-visible { outline: 3px solid var(--r-accent); outline-offset: 2px; border-radius: 6px; }
.gsr [hidden] { display: none !important; }
.gsr a { color: inherit; }
.gsr input[type=range] { accent-color: var(--r-accent); }
/* Atenuado de pantalla (no cambia el brillo del dispositivo: oscurece la lectura). */
.gsr::after { content: ''; position: fixed; inset: 0; z-index: 60; pointer-events: none; background: #000; opacity: var(--r-dim); transition: opacity .2s; }
.gsr.is-paged { overflow: hidden; height: 100vh; height: 100dvh; }

/* ------------------------------------------------------------------ barra superior y pie */
.gsr-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20; height: var(--r-bar-h); display: flex; align-items: center; gap: .25rem; padding: 0 .6rem;
  background: color-mix(in srgb, var(--r-bg) 94%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--r-line); transition: transform .25s ease;
}
.gsr-bar__title { flex: 1; min-width: 0; text-align: center; font-size: .84rem; color: var(--r-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 0 .4rem; }
.gsr-bar__title strong { color: var(--r-ink); font-weight: 650; }
.gsr-foot {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; min-height: var(--r-foot-h); padding: .35rem .9rem calc(.35rem + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--r-bg) 94%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-top: 1px solid var(--r-line); transition: transform .25s ease; display: grid; align-content: center; gap: .15rem;
}
.gsr.is-chrome-hidden .gsr-bar { transform: translateY(-105%); }
.gsr.is-chrome-hidden .gsr-foot { transform: translateY(105%); }
.gsr-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .35rem; min-width: 44px; min-height: 44px; padding: .4rem .65rem;
  border: 0; border-radius: 10px; background: transparent; color: var(--r-ink); font: 550 .85rem/1 var(--gs-font); cursor: pointer; text-decoration: none;
}
.gsr-btn:hover { background: var(--r-line); }
.gsr-btn:disabled { opacity: .4; cursor: not-allowed; }
.gsr-btn svg { width: 20px; height: 20px; }
.gsr-btn[aria-pressed="true"] { color: var(--r-accent); }
.gsr-btn[aria-pressed="true"] svg { fill: currentColor; }
.gsr-btn--primary { background: var(--r-accent); color: var(--r-on-accent); }
.gsr-btn--primary:hover { background: var(--r-accent); filter: brightness(1.1); }
.gsr-btn--outline { border: 1px solid var(--r-line); }
.gsr-progress { position: fixed; left: 0; right: 0; bottom: 0; height: 3px; background: var(--r-line); z-index: 21; }
.gsr-progress > span { display: block; height: 100%; width: 0; background: var(--r-accent); transition: width .25s; }
.gsr-scrub { display: grid; grid-template-columns: minmax(0, 1fr); gap: .1rem; }
.gsr-scrub input[type=range] { width: 100%; height: 22px; margin: 0; cursor: pointer; }
.gsr-scrub__label { display: flex; justify-content: space-between; gap: .75rem; font-size: .76rem; color: var(--r-muted); font-variant-numeric: tabular-nums; }
.gsr-scrub__label span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.gsr-foot--pdf { display: flex; align-items: center; justify-content: center; gap: .25rem; flex-wrap: wrap; }
.gsr-pagebox { display: inline-flex; align-items: center; gap: .35rem; font-size: .88rem; color: var(--r-muted); font-variant-numeric: tabular-nums; }
.gsr-pagebox input { width: 4.2rem; min-height: 40px; padding: .3rem .4rem; text-align: center; border: 1px solid var(--r-line); border-radius: 8px; background: transparent; color: var(--r-ink); font: inherit; -moz-appearance: textfield; }
.gsr-pagebox input::-webkit-outer-spin-button, .gsr-pagebox input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.gsr-zoom { display: inline-flex; align-items: center; gap: .15rem; margin-left: .5rem; padding-left: .5rem; border-left: 1px solid var(--r-line); }
.gsr-zoom select { min-height: 40px; padding: 0 .4rem; border: 1px solid var(--r-line); border-radius: 8px; background: var(--r-bg); color: var(--r-ink); font: inherit; font-size: .85rem; max-width: 9.5rem; }

/* ------------------------------------------------------------------ pagina (desplazamiento) */
.gsr-page { position: relative; max-width: calc(var(--r-width) + 3rem); margin: 0 auto; padding: calc(var(--r-bar-h) + 1.75rem) 1.5rem calc(var(--r-foot-h) + 3rem); }
.gsr-content {
  position: relative; font-family: var(--r-font); font-size: var(--r-size); line-height: var(--r-line-height); text-align: var(--r-align);
  -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; overflow-wrap: break-word;
}
.gsr[data-hyphens="1"] .gsr-content { hyphens: auto; -webkit-hyphens: auto; }
.gsr-content.is-selectable { -webkit-user-select: text; user-select: text; }
.gsr-content h1, .gsr-content h2, .gsr-content h3 { line-height: 1.25; font-family: var(--gs-font-display); font-weight: 600; margin: 1.6em 0 .7em; text-align: left; break-after: avoid; }
.gsr-content h1 { font-size: 1.7em; margin-top: .4em; }
.gsr-content p { margin: 0 0 var(--r-para); orphans: 2; widows: 2; }
.gsr-content img { max-width: 100%; height: auto; display: block; margin: 1.2em auto; border-radius: 4px; cursor: zoom-in; break-inside: avoid; }
.gsr-content blockquote { margin: 1.2em 0; padding-left: 1em; border-left: 3px solid var(--r-line); color: var(--r-muted); }
.gsr-content a { color: inherit; text-decoration-color: var(--r-muted); }
.gsr-content table { border-collapse: collapse; margin: 1em 0; font-size: .9em; max-width: 100%; }
.gsr-content td, .gsr-content th { border: 1px solid var(--r-line); padding: .35em .6em; }
.gsr-content mark { background: #FFE58F; color: #1F1D1A; border-radius: 2px; }
.gsr-content mark.gsr-hl { cursor: pointer; padding: 0; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.gsr-content mark.gsr-hl[data-c="y"] { background: #FFE58F; }
.gsr-content mark.gsr-hl[data-c="g"] { background: #BFE8C0; }
.gsr-content mark.gsr-hl[data-c="b"] { background: #B9D8FF; }
.gsr-content mark.gsr-hl[data-c="p"] { background: #F5C2E0; }
.gsr-content mark.gsr-hl.has-note { border-bottom: 2px dotted rgba(0, 0, 0, .55); }
.gsr-content .is-speaking { background: color-mix(in srgb, var(--r-accent) 18%, transparent); border-radius: 4px; outline: 2px solid color-mix(in srgb, var(--r-accent) 35%, transparent); outline-offset: 3px; }
.gsr-content ::selection { background: color-mix(in srgb, var(--r-accent) 30%, transparent); }
.gsr-watermark { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 2; }
.gsr-watermark span { position: absolute; left: 50%; white-space: nowrap; transform: translateX(-50%) rotate(-24deg); font: 600 13px/1 var(--gs-font); color: var(--r-ink); opacity: .07; letter-spacing: .08em; }
.gsr-license { margin: 3rem 0 0; padding-top: 1rem; border-top: 1px solid var(--r-line); font-size: .78rem; color: var(--r-muted); text-align: center; font-family: var(--gs-font); }
.gsr-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; }
.gsr-nav .gsr-btn { border: 1px solid var(--r-line); padding-inline: 1rem; }
.gsr-loading { text-align: center; color: var(--r-muted); padding: 4rem 0; }
.gsr-state { max-width: 32rem; margin: 12vh auto; padding: 1.5rem; text-align: center; }
.gsr-state h1 { font-family: var(--gs-font-display); font-weight: 600; font-size: 1.6rem; }
.gsr-state p { color: var(--r-muted); }

/* ------------------------------------------------------------------ lectura por paginas (columnas CSS) */
.gsr.is-paged .gsr-page { position: fixed; top: var(--r-bar-h); bottom: var(--r-foot-h); left: 0; right: 0; max-width: none; margin: 0; padding: 0; display: flex; align-items: center; justify-content: center; transition: top .25s, bottom .25s; }
.gsr.is-paged.is-chrome-hidden .gsr-page { top: 0; bottom: 0; }
.gsr.is-paged .gsr-pager { position: relative; overflow: hidden; width: var(--pg-vw, 100%); height: var(--pg-h, 100%); touch-action: pan-y; }
.gsr.is-paged .gsr-content { height: var(--pg-h, 100%); width: var(--pg-vw, 100%); column-width: var(--pg-w, 30rem); column-gap: var(--pg-gap, 3rem); column-fill: auto; transition: transform .3s ease; will-change: transform; }
.gsr.is-paged .gsr-content img { max-height: calc(var(--pg-h, 80vh) - 2rem); width: auto; max-width: 100%; object-fit: contain; }
.gsr.is-paged .gsr-content > :first-child { margin-top: 0; }
.gsr.is-paged .gsr-nav, .gsr.is-paged .gsr-license { display: none; }
.gsr.is-paged .gsr-watermark { display: none; }
.gsr.is-paged .gsr-pager::after { content: attr(data-watermark); position: absolute; right: .25rem; bottom: .15rem; font: 600 10px/1 var(--gs-font); letter-spacing: .06em; opacity: .12; pointer-events: none; }
.gsr-pagehint { position: fixed; z-index: 15; top: 50%; transform: translateY(-50%); width: 44px; height: 88px; display: none; align-items: center; justify-content: center; border: 0; border-radius: 12px; background: transparent; color: var(--r-muted); cursor: pointer; opacity: .55; }
.gsr-pagehint:hover { background: var(--r-line); opacity: 1; }
.gsr-pagehint svg { width: 26px; height: 26px; }
.gsr-pagehint--prev { left: .5rem; } .gsr-pagehint--next { right: .5rem; }
.gsr.is-paged .gsr-pagehint { display: flex; }
@media (max-width: 760px) { .gsr.is-paged .gsr-pagehint { display: none; } }

/* ------------------------------------------------------------------ paneles */
.gsr-panel {
  position: fixed; top: 0; bottom: 0; z-index: 40; width: min(400px, 94vw); background: var(--r-panel); color: var(--r-ink);
  border-right: 1px solid var(--r-line); box-shadow: 0 0 40px rgba(0, 0, 0, .22); padding: 1rem; overflow-y: auto; overscroll-behavior: contain;
  transform: translateX(-105%); transition: transform .25s; left: 0;
}
.gsr-panel--right { left: auto; right: 0; border-right: 0; border-left: 1px solid var(--r-line); transform: translateX(105%); }
.gsr-panel.is-open { transform: none; }
.gsr-panel h2 { font-size: 1rem; margin: .25rem 0 1rem; display: flex; justify-content: space-between; align-items: center; }
.gsr-scrim { position: fixed; inset: 0; background: rgba(0, 0, 0, .35); z-index: 35; display: none; }
.gsr-scrim.is-open { display: block; }
.gsr-tabs { display: flex; gap: .25rem; margin: 0 0 1rem; padding: .2rem; border-radius: 12px; background: var(--r-line); }
.gsr-tabs button { flex: 1; min-height: 38px; padding: 0 .5rem; border: 0; border-radius: 9px; background: transparent; color: var(--r-muted); font: 600 .8rem/1 var(--gs-font); cursor: pointer; }
.gsr-tabs button[aria-selected="true"] { background: var(--r-panel); color: var(--r-ink); box-shadow: 0 1px 3px rgba(0, 0, 0, .15); }
.gsr-toc { list-style: none; margin: 0; padding: 0; }
.gsr-toc a { display: block; padding: .6rem .5rem; border-radius: 8px; text-decoration: none; color: inherit; font-size: .92rem; }
.gsr-toc a:hover { background: var(--r-line); }
.gsr-toc a[aria-current="true"] { font-weight: 700; color: var(--r-accent); }
.gsr-toc a.is-locked { color: var(--r-muted); }
.gsr-empty { color: var(--r-muted); font-size: .88rem; padding: .5rem .25rem; }
.gsr-setting { margin-bottom: 1.15rem; }
.gsr-setting__label { font-size: .74rem; text-transform: uppercase; letter-spacing: .1em; color: var(--r-muted); margin-bottom: .45rem; font-weight: 650; display: flex; justify-content: space-between; gap: .5rem; }
.gsr-setting__label output { text-transform: none; letter-spacing: 0; font-weight: 600; color: var(--r-ink); }
.gsr-seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: .35rem; }
.gsr-seg button { min-height: 42px; border-radius: 10px; border: 1px solid var(--r-line); background: transparent; color: var(--r-ink); cursor: pointer; font: 550 .82rem/1.1 var(--gs-font); padding: 0 .3rem; }
.gsr-seg button[aria-pressed="true"] { border-color: var(--r-accent); box-shadow: inset 0 0 0 1px var(--r-accent); font-weight: 700; }
.gsr-seg--themes button { position: relative; padding-top: 1.6rem; }
.gsr-seg--themes button::before { content: 'Aa'; position: absolute; top: .3rem; left: 50%; transform: translateX(-50%); font: 700 .95rem/1 'PT Serif', Georgia, serif; }
.gsr-seg--themes [data-value="light"] { background: #FBFAF7; color: #1F1D1A; } .gsr-seg--themes [data-value="sepia"] { background: #F4ECD8; color: #3B2F22; }
.gsr-seg--themes [data-value="gray"] { background: #2A2A2D; color: #E4E2DD; } .gsr-seg--themes [data-value="dark"] { background: #141312; color: #E7E1D6; } .gsr-seg--themes [data-value="black"] { background: #000; color: #D9D4CB; }
.gsr-sizer { display: grid; grid-template-columns: 44px minmax(0, 1fr) 44px; align-items: center; gap: .4rem; }
.gsr-sizer input { width: 100%; }
.gsr-switch { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 44px; font-size: .9rem; cursor: pointer; }
.gsr-switch input { width: 2.6rem; height: 1.45rem; appearance: none; -webkit-appearance: none; border-radius: 999px; background: var(--r-line); position: relative; cursor: pointer; transition: background .15s; flex: none; border: 1px solid color-mix(in srgb, var(--r-ink) 20%, transparent); }
.gsr-switch input::after { content: ''; position: absolute; top: 2px; left: 2px; width: calc(1.45rem - 8px); height: calc(1.45rem - 8px); border-radius: 50%; background: var(--r-bg); box-shadow: 0 1px 3px rgba(0, 0, 0, .35); transition: transform .15s; }
.gsr-switch input:checked { background: var(--r-accent); }
.gsr-switch input:checked::after { transform: translateX(1.15rem); }
.gsr-fineprint { font-size: .78rem; color: var(--r-muted); line-height: 1.5; margin: 1rem 0 0; }
.gsr-reset { margin-top: .5rem; }

.gsr-search-form input { width: 100%; min-height: 44px; padding: .5rem .75rem; border-radius: 10px; border: 1px solid var(--r-line); background: transparent; color: inherit; font: inherit; }
.gsr-search-results { list-style: none; padding: 0; margin: .75rem 0 0; display: grid; gap: .25rem; }
.gsr-search-results button { width: 100%; text-align: left; padding: .6rem; border-radius: 8px; border: 0; background: transparent; color: inherit; cursor: pointer; font-size: .86rem; }
.gsr-search-results button:hover { background: var(--r-line); }

/* Notas y subrayados */
.gsr-notes { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.gsr-notes li { border: 1px solid var(--r-line); border-radius: 12px; padding: .7rem .8rem; }
.gsr-notes__chapter { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--r-muted); margin: .9rem 0 .35rem; font-weight: 700; }
.gsr-notes blockquote { margin: 0; padding: .1rem .6rem; border-left: 4px solid #FFE58F; font-family: var(--r-font); font-size: .92rem; line-height: 1.5; }
.gsr-notes blockquote[data-c="g"] { border-color: #BFE8C0; } .gsr-notes blockquote[data-c="b"] { border-color: #B9D8FF; } .gsr-notes blockquote[data-c="p"] { border-color: #F5C2E0; }
.gsr-notes p { margin: .45rem 0 0; font-size: .86rem; color: var(--r-ink); }
.gsr-notes__actions { display: flex; gap: .25rem; margin-top: .4rem; }
.gsr-notes__actions button { min-height: 34px; border: 0; background: transparent; color: var(--r-muted); font: 600 .78rem/1 var(--gs-font); border-radius: 8px; cursor: pointer; padding: 0 .55rem; }
.gsr-notes__actions button:hover { background: var(--r-line); color: var(--r-ink); }
.gsr-bookmarks { list-style: none; margin: 0; padding: 0; }
.gsr-bookmarks li { display: flex; align-items: center; }
.gsr-bookmarks a { flex: 1; display: block; padding: .6rem .5rem; border-radius: 8px; text-decoration: none; font-size: .9rem; }
.gsr-bookmarks a:hover { background: var(--r-line); }

/* Barra de seleccion (subrayar) y editor de nota */
.gsr-selbar {
  position: fixed; left: 50%; bottom: calc(var(--r-foot-h) + 14px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 30; display: flex; align-items: center; gap: .25rem; padding: .35rem;
  max-width: calc(100vw - 1.5rem); background: var(--r-panel); color: var(--r-ink); border: 1px solid var(--r-line); border-radius: 16px; box-shadow: 0 12px 34px rgba(0, 0, 0, .28);
}
.gsr.is-chrome-hidden .gsr-selbar { bottom: calc(14px + env(safe-area-inset-bottom)); }
.gsr-swatch { width: 36px; height: 36px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; padding: 0; }
.gsr-swatch[data-color="y"] { background: #FFE58F; } .gsr-swatch[data-color="g"] { background: #BFE8C0; } .gsr-swatch[data-color="b"] { background: #B9D8FF; } .gsr-swatch[data-color="p"] { background: #F5C2E0; }
.gsr-swatch[aria-pressed="true"] { border-color: var(--r-ink); }
.gsr-selbar__sep { width: 1px; align-self: stretch; background: var(--r-line); margin: 0 .15rem; }
.gsr-noteedit { position: fixed; left: 50%; bottom: calc(var(--r-foot-h) + 14px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 31; width: min(26rem, calc(100vw - 1.5rem)); padding: .8rem; background: var(--r-panel); border: 1px solid var(--r-line); border-radius: 16px; box-shadow: 0 12px 34px rgba(0, 0, 0, .3); display: grid; gap: .5rem; }
.gsr-noteedit textarea { width: 100%; min-height: 90px; padding: .6rem; border-radius: 10px; border: 1px solid var(--r-line); background: transparent; color: inherit; font: inherit; resize: vertical; }
.gsr-noteedit__quote { margin: 0; font-family: var(--r-font); font-size: .86rem; color: var(--r-muted); max-height: 3.6em; overflow: hidden; }
.gsr-noteedit__actions { display: flex; justify-content: flex-end; gap: .4rem; }

/* Leer en voz alta */
.gsr-tts { position: fixed; left: 50%; bottom: calc(var(--r-foot-h) + 14px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 29; display: flex; align-items: center; gap: .15rem; padding: .3rem .4rem; background: var(--r-panel); border: 1px solid var(--r-line); border-radius: 16px; box-shadow: 0 12px 34px rgba(0, 0, 0, .26); max-width: calc(100vw - 1.5rem); }
.gsr-tts select { min-height: 40px; border: 1px solid var(--r-line); border-radius: 8px; background: transparent; color: inherit; font: inherit; font-size: .82rem; padding: 0 .3rem; }
.gsr.is-chrome-hidden .gsr-tts { bottom: calc(14px + env(safe-area-inset-bottom)); }

/* Imagen ampliada y ayuda de atajos */
.gsr-lightbox { position: fixed; inset: 0; z-index: 70; display: grid; place-items: center; background: rgba(0, 0, 0, .86); padding: 1rem; cursor: zoom-out; overflow: auto; }
.gsr-lightbox img { max-width: min(96vw, 1400px); max-height: 94vh; object-fit: contain; background: #fff; border-radius: 6px; }
.gsr-help { position: fixed; inset: 0; z-index: 70; display: grid; place-items: center; background: rgba(0, 0, 0, .5); padding: 1rem; }
.gsr-help__box { width: min(30rem, 100%); max-height: 90vh; overflow: auto; background: var(--r-panel); color: var(--r-ink); border-radius: 16px; padding: 1.25rem 1.4rem; box-shadow: 0 20px 60px rgba(0, 0, 0, .4); }
.gsr-help__box h2 { margin: 0 0 .8rem; font-size: 1.1rem; display: flex; justify-content: space-between; align-items: center; }
.gsr-help dl { display: grid; grid-template-columns: auto 1fr; gap: .45rem 1rem; margin: 0; font-size: .88rem; }
.gsr-help dt { white-space: nowrap; } .gsr-help dd { margin: 0; color: var(--r-muted); }
.gsr-help kbd { display: inline-block; min-width: 1.6rem; padding: .1rem .4rem; text-align: center; border: 1px solid var(--r-line); border-bottom-width: 2px; border-radius: 6px; font: 600 .78rem/1.4 var(--gs-font); background: var(--r-bg); }
.gsr-toast { position: fixed; left: 50%; bottom: calc(var(--r-foot-h) + 1rem); transform: translateX(-50%); background: var(--r-ink); color: var(--r-bg); padding: .7rem 1rem; border-radius: 10px; z-index: 80; font-size: .9rem; box-shadow: 0 10px 30px rgba(0, 0, 0, .25); max-width: calc(100vw - 2rem); }

/* ------------------------------------------------------------------ PDF */
.gsr-page--pdf { max-width: none; padding: calc(var(--r-bar-h) + .8rem) .5rem calc(var(--r-foot-h) + 1.5rem); }
.gsr-pdf { overflow-x: auto; overflow-y: visible; -webkit-overflow-scrolling: touch; touch-action: pan-x pan-y; }
.gsr-pdf__inner { display: flex; flex-direction: column; align-items: center; gap: .9rem; min-width: 100%; width: max-content; margin: 0 auto; transform-origin: 0 0; }
.gsr-pdf__page { position: relative; flex: none; background: #fff; box-shadow: 0 2px 14px rgba(0, 0, 0, .18); scroll-margin-top: calc(var(--r-bar-h) + .8rem); overflow: hidden; }
.gsr-pdf__page canvas { display: block; width: 100%; height: 100%; }
.gsr-pdf__page.is-loading::before { content: attr(data-label); position: absolute; inset: 0; display: grid; place-items: center; color: #8A857B; font: 500 .85rem var(--gs-font); }
.gsr-pdf__page .gsr-watermark span { color: #000; opacity: .08; }
.gsr-pdf.is-single .gsr-pdf__page:not(.is-current) { display: none; }
.gsr[data-pdf-night="1"][data-theme="dark"] .gsr-pdf__page canvas, .gsr[data-pdf-night="1"][data-theme="gray"] .gsr-pdf__page canvas, .gsr[data-pdf-night="1"][data-theme="black"] .gsr-pdf__page canvas { filter: invert(.9) hue-rotate(180deg); }
.gsr[data-pdf-night="1"][data-theme="dark"] .gsr-pdf__page, .gsr[data-pdf-night="1"][data-theme="gray"] .gsr-pdf__page, .gsr[data-pdf-night="1"][data-theme="black"] .gsr-pdf__page { background: #1b1b1b; }
.gsr-thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: .6rem; }
.gsr-thumb { display: grid; align-content: start; align-self: start; gap: .25rem; justify-items: center; padding: .35rem; border: 2px solid transparent; border-radius: 10px; background: transparent; color: var(--r-muted); cursor: pointer; font: 600 .75rem/1 var(--gs-font); }
.gsr-thumb:hover { background: var(--r-line); }
.gsr-thumb[aria-current="true"] { border-color: var(--r-accent); color: var(--r-ink); }
.gsr-thumb canvas, .gsr-thumb .gsr-thumb__ph { display: block; width: 100%; background: #fff; box-shadow: 0 1px 4px rgba(0, 0, 0, .25); }

@media (max-width: 520px) {
  .gsr-bar { padding: 0 .3rem; gap: 0; }
  .gsr-btn { min-width: 40px; padding-inline: .5rem; }
  .gsr-page { padding-inline: 1.1rem; }
  .gsr-page.gsr-page--pdf { padding-inline: .25rem; }
  .gsr-zoom { margin-left: 0; padding-left: 0; border-left: 0; }
  .gsr-foot--pdf { gap: .1rem; }
}
@media print {
  .gsr > * { display: none !important; }
  .gsr::before { content: 'Este libro está protegido: la impresión no está disponible desde el lector.'; display: block; padding: 2rem; font: 16px/1.5 sans-serif; }
}
@media (prefers-reduced-motion: reduce) {
  .gsr, .gsr-bar, .gsr-foot, .gsr-panel, .gsr-progress > span, .gsr.is-paged .gsr-content, .gsr.is-paged .gsr-page { transition: none !important; }
}