/* =====================================================================
   Sitio público · Revista de Campo a Cordillera
   --ancho-visor lo define el panel (html style="--ancho-visor: 70%")
   ===================================================================== */
:root {
    --ancho-visor: 70%;
    --alto-barra: 56px;
    --fondo-visor: #23272e;
    --fondo-visor-2: #353b45;
    --acento: #e0245e;
}

html, body {
    height: 100%;
}
body {
    background: var(--bs-tertiary-bg);
}

.barra-sitio {
    height: var(--alto-barra);
    background: #111418;
    padding-top: 0;
    padding-bottom: 0;
}

.marca-sitio {
    display: flex;
    align-items: center;
    gap: .85rem;
    min-width: 0;
    margin-right: .5rem;
    padding: 0;
}
.logo-sitio {
    height: 40px;
    width: auto;
    flex-shrink: 0;
}
.titulo-sitio {
    font-weight: 600;
    padding-left: .85rem;
    border-left: 1px solid rgba(255, 255, 255, .3);
    line-height: 1.2;
}
@media (max-width: 575.98px) {
    .logo-sitio { height: 32px; }
    .marca-sitio { gap: .6rem; }
    .titulo-sitio {
        font-size: .95rem;
        padding-left: .6rem;
    }
}

/* ---------- Modo incrustado (?embed=1): sin cabecera, ocupa todo el iframe ---------- */
.modo-embed {
    --alto-barra: 0px;
}

/* ---------- Layout 70 / 30 ---------- */
.app-layout {
    display: flex;
    flex-direction: column;
}
.zona-visor {
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bs-body-bg);
}
.visor {
    position: relative;
    height: 72vh;
    height: 72dvh;
    min-height: 320px;
    background: radial-gradient(ellipse at center, var(--fondo-visor-2) 0%, var(--fondo-visor) 75%);
    overflow: hidden;
    user-select: none;
}

@media (min-width: 992px) {
    .app-layout {
        flex-direction: row;
        height: calc(100vh - var(--alto-barra));
        height: calc(100dvh - var(--alto-barra));
    }
    .zona-visor {
        flex: 0 0 var(--ancho-visor);
        max-width: var(--ancho-visor);
        height: 100%;
    }
    .visor {
        flex: 1 1 auto;
        height: auto;
        min-height: 0;
    }
    .zona-historial {
        flex: 1 1 0;
        min-width: 0;
        height: 100%;
        overflow-y: auto;
        border-left: 1px solid var(--bs-border-color);
        background: var(--bs-tertiary-bg);
    }
    .zona-historial .offcanvas-body {
        display: block;
        padding: 1.25rem 1rem;
    }
}

/* ---------- Área del libro ---------- */
.flip-area {
    position: absolute;
    inset: 24px 64px;
    display: flex;
    align-items: center;
    justify-content: center;
}
@media (max-width: 575.98px) {
    .flip-area {
        inset: 12px 8px;
    }
}
.flipbook {
    flex: 0 0 auto;
}
.pagina {
    background: #fff;
    overflow: hidden;
}
.pagina canvas {
    display: block;
    width: 100%;
    height: 100%;
}
.pagina:not(.lista)::after {
    /* marcador mientras la página se dibuja */
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, #f3f3f3 30%, #fafafa 50%, #f3f3f3 70%);
    background-size: 300% 100%;
    animation: brillo 1.4s ease-in-out infinite;
}
@keyframes brillo {
    from { background-position: 100% 0; }
    to   { background-position: 0 0; }
}

/* ---------- Estados (cargando / error) ---------- */
.visor-estado {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #e9ecef;
    text-align: center;
    padding: 1rem;
    background: rgba(35, 39, 46, .85);
    z-index: 5;
}

.visor-cargando {
    gap: 1rem;
    padding: 24px 64px;
    background: radial-gradient(ellipse at center, var(--fondo-visor-2) 0%, var(--fondo-visor) 75%);
}
.portada-carga {
    display: block;
    max-width: 100%;
    max-height: calc(100% - 3rem);
    min-height: 0;
    object-fit: contain;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .45);
    animation: aparecer .3s ease;
}
.portada-carga[hidden] {
    display: none;
}
.indicador-carga {
    display: flex;
    align-items: center;
    font-size: .9rem;
    color: #dee2e6;
}
@keyframes aparecer {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@media (max-width: 575.98px) {
    .visor-cargando { padding: 12px 8px; }
}

/* ---------- Flechas ---------- */
.btn-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 4;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 50%;
    color: #fff;
    background: rgba(0, 0, 0, .35);
    font-size: 1.4rem;
    display: grid;
    place-items: center;
    transition: background .2s, opacity .2s;
}
.btn-nav:hover:not(:disabled) {
    background: rgba(0, 0, 0, .6);
}
.btn-nav:disabled {
    opacity: .2;
    cursor: default;
}
.btn-nav-prev { left: 10px; }
.btn-nav-next { right: 10px; }
@media (max-width: 575.98px) {
    .btn-nav {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
        background: rgba(0, 0, 0, .25);
    }
    .btn-nav-prev { left: 4px; }
    .btn-nav-next { right: 4px; }
}

/* ---------- Barra inferior e información ---------- */
.barra-controles {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: .5rem;
    padding: .4rem .75rem;
    background: #111418;
    color: #dee2e6;
}
.indicador-pagina {
    font-size: .875rem;
    font-variant-numeric: tabular-nums;
}
.info-revista {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--bs-border-color);
}
.min-w-0 { min-width: 0; }
.descripcion {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--bs-secondary-color);
}
.descripcion:empty { display: none; }
.acciones-revista {
    display: flex;
    align-items: center;
    gap: .75rem;
    flex-shrink: 0;
}
.contador {
    color: var(--bs-secondary-color);
    font-size: .9rem;
    white-space: nowrap;
}
.btn-like {
    border: 1px solid var(--bs-border-color);
    border-radius: 999px;
    padding: .25rem .8rem;
    font-size: .9rem;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    transition: transform .15s, color .15s, border-color .15s;
}
.btn-like:hover {
    border-color: var(--acento);
    color: var(--acento);
}
.btn-like.activo {
    color: var(--acento);
    border-color: var(--acento);
    background: rgba(224, 36, 94, .08);
}
.btn-like.latido i {
    animation: latido .35s ease;
}
@keyframes latido {
    50% { transform: scale(1.35); }
}

/* ---------- Historial ---------- */
.titulo-historial {
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--bs-secondary-color);
    margin-bottom: .75rem;
}
.lista-historial {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 1rem;
}
.item-historial {
    display: block;
    text-decoration: none;
    color: inherit;
    border-radius: .5rem;
    padding: .5rem;
    transition: background .15s;
}
.item-historial:hover {
    background: var(--bs-secondary-bg);
}
.item-historial.activa {
    background: var(--bs-primary-bg-subtle);
    outline: 2px solid var(--bs-primary);
}
.miniatura-historial {
    position: relative;
    aspect-ratio: 3 / 4;
    border-radius: .25rem;
    overflow: hidden;
    background: var(--bs-body-bg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .18);
    display: grid;
    place-items: center;
}
.miniatura-historial img,
.miniatura-historial canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.miniatura-historial canvas:not(.lista) { display: none; }
.miniatura-historial canvas.lista + .icono-respaldo { display: none; }
.icono-respaldo {
    font-size: 2rem;
    color: var(--bs-secondary-color);
}
.texto-historial h3 {
    font-size: .85rem;
    font-weight: 600;
    margin: .5rem 0 .1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.texto-historial small {
    color: var(--bs-secondary-color);
    font-size: .75rem;
}

/* ---------- Pantalla completa ---------- */
.zona-visor:fullscreen,
.zona-visor.pantalla-completa {
    max-width: none;
    width: 100vw;
    height: 100vh;
    background: var(--fondo-visor);
}
.zona-visor.pantalla-completa {
    position: fixed;
    inset: 0;
    z-index: 1060;
    height: 100dvh;
}
.zona-visor:fullscreen .visor,
.zona-visor.pantalla-completa .visor {
    flex: 1 1 auto;
    height: auto;
}
.zona-visor:fullscreen .info-revista,
.zona-visor.pantalla-completa .info-revista {
    display: none;
}

/* ---------- Sin revistas ---------- */
.estado-vacio {
    min-height: calc(100vh - var(--alto-barra));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}
.estado-vacio > i {
    font-size: 3.5rem;
    color: var(--bs-secondary-color);
    margin-bottom: 1rem;
}