/* ==========================================================================
   MODAL "MIS ESTADÍSTICAS" — Rediseño
   Causa del problema anterior: el modal se mostraba con display:flex en fila,
   así que título, tarjetas y gráfico quedaban uno al lado del otro y se
   desbordaban. Además usaba variables inexistentes (--bg-secondary...).
   Ahora: fondo oscurecido, tarjeta en columna, colores del tema activo.
   ========================================================================== */

.stats-overlay {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    animation: statsFondo 0.2s ease both;
}
.stats-overlay[hidden] { display: none !important; }

.stats-card {
    width: 520px;
    max-width: 100%;
    max-height: calc(100vh - 2rem);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
    padding: 1.6rem;
    border-radius: 20px;
    background: var(--t-surface, #161412);
    color: var(--t-ink, #f5f2ec);
    border: 1px solid var(--t-border, rgba(255, 255, 255, 0.1));
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
    font-family: 'Inter', sans-serif;
    line-height: 1.4;
    animation: statsEntrada 0.25s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
}

/* Encabezado */
.stats-head { display: flex; align-items: center; gap: 0.9rem; }
.stats-head-icono {
    width: 44px; height: 44px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    border-radius: 12px;
    background: var(--t-accent-soft, rgba(212, 175, 55, 0.14));
    color: var(--t-accent, #d4af37);
}
.stats-head-icono svg { width: 22px; height: 22px; }
.stats-head-textos { flex: 1; min-width: 0; }
.stats-head-textos h3 {
    margin: 0;
    font-family: var(--font-heading, 'Outfit', sans-serif);
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--t-ink, #f5f2ec);
    text-align: left;
}
.stats-head-textos p {
    margin: 0.1rem 0 0;
    font-size: 0.82rem;
    color: var(--t-muted, #c9c3b8);
    text-align: left;
}
.stats-cerrar {
    width: 38px; height: 38px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--t-border, rgba(255, 255, 255, 0.1));
    background: transparent;
    color: var(--t-muted, #c9c3b8);
    cursor: pointer;
    transition: all 0.2s ease;
}
.stats-cerrar svg { width: 18px; height: 18px; }
.stats-cerrar:hover { background: var(--t-hover, rgba(255, 255, 255, 0.08)); color: var(--t-ink, #fff); transform: rotate(90deg); }

/* Indicadores */
.stats-kpis {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.7rem;
}
.stats-kpi {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.85rem 0.75rem;
    border-radius: 14px;
    background: var(--t-surface-2, rgba(255, 255, 255, 0.05));
    border: 1px solid var(--t-border, rgba(255, 255, 255, 0.08));
    min-width: 0;
}
.stats-kpi-label {
    display: inline-flex; align-items: center; gap: 0.3rem;
    font-size: 0.68rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--t-muted, #c9c3b8);
}
.stats-kpi-label svg { width: 13px; height: 13px; }
.stats-kpi strong {
    font-family: var(--font-heading, 'Outfit', sans-serif);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--t-accent, #d4af37);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.stats-kpi small { font-size: 0.74rem; color: var(--t-muted, #c9c3b8); }
.stats-kpi-racha.activa strong { color: #f97316; }

/* Gráfico semanal */
.stats-semana {
    padding: 1rem 1rem 0.8rem;
    border-radius: 16px;
    background: var(--t-surface-2, rgba(255, 255, 255, 0.04));
    border: 1px solid var(--t-border, rgba(255, 255, 255, 0.08));
}
.stats-semana-head {
    display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem;
    margin-bottom: 0.8rem;
}
.stats-semana-head h4 {
    margin: 0;
    font-size: 0.78rem; font-weight: 800;
    text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--t-ink, #f5f2ec);
}
.stats-semana-head span { font-size: 0.75rem; color: var(--t-muted, #c9c3b8); }

.stats-chart {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    align-items: end;
    height: 170px;
}
.stats-dia {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    gap: 0.35rem;
    height: 100%;
    min-width: 0;
}
.stats-dia-valor {
    font-size: 0.68rem; font-weight: 700;
    color: var(--t-accent, #d4af37);
    min-height: 1em;
    white-space: nowrap;
}
.stats-dia-pista {
    position: relative;
    width: 100%;
    max-width: 38px;
    flex: 1;
    border-radius: 10px;
    background: var(--t-hover, rgba(128, 128, 128, 0.12));
    overflow: hidden;
}
.stats-dia-barra {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    border-radius: 10px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--t-accent, #d4af37) 70%, #fff), var(--t-accent, #d4af37));
    transform-origin: bottom;
    animation: statsBarra 0.6s cubic-bezier(0.2, 0.9, 0.3, 1) both;
}
.stats-dia-barra.cero { background: transparent; }
.stats-dia-nombre {
    font-size: 0.72rem; font-weight: 600;
    color: var(--t-muted, #c9c3b8);
    text-transform: capitalize;
}
.stats-dia.hoy .stats-dia-nombre {
    color: var(--t-accent, #d4af37);
    font-weight: 800;
}
.stats-dia.hoy .stats-dia-pista { box-shadow: inset 0 0 0 1.5px var(--t-accent, #d4af37); }

/* Estado vacío */
.stats-vacio {
    display: flex; align-items: center; gap: 0.6rem;
    margin: 0;
    padding: 0.8rem 1rem;
    border-radius: 12px;
    font-size: 0.82rem;
    text-align: left;
    color: var(--t-muted, #c9c3b8);
    background: var(--t-accent-soft, rgba(212, 175, 55, 0.1));
}
.stats-vacio[hidden] { display: none; }
.stats-vacio svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--t-accent, #d4af37); }

/* KPI con valor largo (ej. "23h 29m") → no truncar */
.stats-kpi strong.largo { font-size: 1.08rem; letter-spacing: -0.01em; text-overflow: clip; }

/* Historial de libros */
.stats-libros-historico[hidden] { display: none; }
.stats-hist-lista {
    display: flex; flex-direction: column; gap: 0.55rem;
    max-height: 290px; overflow-y: auto; padding-right: 0.35rem;
    scrollbar-width: thin; scrollbar-color: var(--t-accent, #d4af37) transparent;
}
.stats-hist-lista::-webkit-scrollbar { width: 5px; }
.stats-hist-lista::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--t-accent, #d4af37) 55%, transparent); border-radius: 10px; }
.stats-hist-item {
    display: flex; align-items: center; gap: 0.8rem;
    padding: 0.55rem 0.8rem;
    border-radius: 12px;
    background: var(--t-surface-2, rgba(255, 255, 255, 0.035));
    border: 1px solid var(--t-border, rgba(255, 255, 255, 0.08));
    transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.stats-hist-item:hover {
    border-color: color-mix(in srgb, var(--t-accent, #d4af37) 45%, transparent);
    background: var(--t-accent-soft, rgba(212, 175, 55, 0.06));
    transform: translateX(2px);
}
.stats-hist-cover {
    width: 34px; height: 50px; flex-shrink: 0;
    object-fit: cover; border-radius: 5px;
    background: #222;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.45);
}
.stats-hist-cover-vacia { display: flex; align-items: center; justify-content: center; color: var(--t-muted, #888); }
.stats-hist-cover-vacia svg { width: 16px; height: 16px; }
.stats-hist-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.2rem; }
.stats-hist-titulo {
    font-size: 0.86rem; font-weight: 650; color: var(--t-ink, #f1f1f1);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.stats-hist-fecha {
    display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 0.65rem;
    font-size: 0.72rem; color: var(--t-muted, #b5afa5);
}
.stats-hist-fecha > span { display: inline-flex; align-items: center; gap: 0.25rem; }
.stats-hist-fecha svg { width: 12px; height: 12px; opacity: 0.75; }
.stats-hist-badge {
    padding: 0.05rem 0.45rem; border-radius: 999px;
    font-size: 0.64rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em;
    color: var(--t-accent, #d4af37);
    background: var(--t-accent-soft, rgba(212, 175, 55, 0.14));
}
.stats-hist-sinhora { color: #6f6a63; font-style: italic; }
.stats-hist-dias { font-size: 0.68rem; color: #8c867d; }
.stats-hist-tiempo {
    font-family: var(--font-heading, 'Outfit', sans-serif);
    font-size: 0.9rem; font-weight: 800; white-space: nowrap;
    color: var(--t-accent, #d4af37);
}
.stats-hist-vacio { font-size: 0.8rem; color: #777; margin: 0; }

/* Filtro por mes + retomar lectura */
.stats-hist-head { align-items: center; }
.stats-hist-head > div { display: flex; flex-direction: column; gap: 0.15rem; min-width: 0; }
.stats-hist-head h4 { margin: 0; }
.stats-hist-filtro { flex: 0 1 180px; padding: 0.4rem 0.6rem; font-size: 0.76rem; }
.stats-hist-item[role="button"] { cursor: pointer; outline: none; }
.stats-hist-item[role="button"]:focus-visible { border-color: var(--t-accent, #d4af37); box-shadow: 0 0 0 2px var(--t-accent-soft, rgba(212, 175, 55, 0.3)); }
.stats-hist-item.no-disponible { opacity: 0.55; }
.stats-hist-lado { display: flex; flex-direction: column; align-items: flex-end; gap: 0.2rem; flex-shrink: 0; }
.stats-hist-continuar {
    display: inline-flex; align-items: center; gap: 0.2rem;
    font-size: 0.68rem; font-weight: 700;
    color: var(--t-accent, #d4af37);
    opacity: 0; transform: translateX(-4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.stats-hist-continuar svg { width: 12px; height: 12px; }
.stats-hist-item:hover .stats-hist-continuar,
.stats-hist-item:focus-visible .stats-hist-continuar { opacity: 1; transform: none; }
/* En pantallas táctiles no hay hover: mostrar siempre */
@media (hover: none) { .stats-hist-continuar { opacity: 0.85; transform: none; } }

/* Zona de reinicio */
.stats-reset {
    display: flex; flex-direction: column; gap: 0.7rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--t-border, rgba(255, 255, 255, 0.1));
}
.stats-reset[hidden] { display: none; }
.stats-reset-head {
    display: flex; align-items: center; gap: 0.4rem;
    font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--t-muted, #c9c3b8);
}
.stats-reset-head svg { width: 14px; height: 14px; }
.stats-reset-fila { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.stats-reset-select {
    flex: 1 1 170px; min-width: 0;
    padding: 0.5rem 0.7rem;
    border-radius: 10px;
    border: 1px solid var(--t-border, rgba(255, 255, 255, 0.12));
    background: var(--t-surface-2, rgba(255, 255, 255, 0.05));
    color: var(--t-ink, #f5f2ec);
    font: inherit; font-size: 0.8rem;
    cursor: pointer;
}
.stats-reset-select option { background: #1b1916; color: #f5f2ec; }
.stats-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
    padding: 0.5rem 0.85rem;
    border-radius: 10px;
    font: inherit; font-size: 0.78rem; font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.stats-btn svg { width: 14px; height: 14px; }
.stats-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.stats-btn-sec {
    background: transparent;
    color: var(--t-ink, #f5f2ec);
    border: 1px solid var(--t-border, rgba(255, 255, 255, 0.14));
}
.stats-btn-sec:hover:not(:disabled) { border-color: var(--t-accent, #d4af37); color: var(--t-accent, #d4af37); }
.stats-btn-peligro {
    background: rgba(239, 68, 68, 0.08);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}
.stats-btn-peligro:hover:not(:disabled) { background: rgba(239, 68, 68, 0.16); border-color: rgba(239, 68, 68, 0.6); }
.stats-btn-peligro.solido { background: linear-gradient(135deg, #ef4444, #b91c1c); color: #fff; border-color: transparent; box-shadow: 0 6px 18px rgba(239, 68, 68, 0.25); }
.stats-btn-peligro.solido:hover { filter: brightness(1.1); transform: translateY(-1px); }
.stats-reset-confirm {
    display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 0.7rem; align-items: start;
    padding: 0.85rem 0.95rem;
    border-radius: 12px;
    background: rgba(239, 68, 68, 0.07);
    border: 1px solid rgba(239, 68, 68, 0.28);
    animation: statsEntrada 0.2s ease both;
}
.stats-reset-confirm[hidden] { display: none; }
.stats-reset-confirm > svg { width: 18px; height: 18px; color: #f87171; margin-top: 0.1rem; }
.stats-reset-confirm p { margin: 0; font-size: 0.8rem; color: var(--t-ink, #f1ece4); text-align: left; }
.stats-reset-confirm strong { color: #fca5a5; }
.stats-reset-acciones { grid-column: 1 / -1; display: flex; justify-content: flex-end; gap: 0.5rem; }

/* Celular */
@media (max-width: 520px) {
    .stats-card { padding: 1.2rem; gap: 1.1rem; border-radius: 18px; }
    .stats-kpis { grid-template-columns: repeat(2, 1fr); }
    .stats-chart { height: 140px; gap: 0.3rem; }
    .stats-reset-fila .stats-btn { flex: 1 1 auto; }
}

@keyframes statsFondo { from { opacity: 0; } to { opacity: 1; } }
@keyframes statsEntrada { from { opacity: 0; transform: translateY(14px) scale(0.97); } to { opacity: 1; transform: none; } }
@keyframes statsBarra { from { transform: scaleY(0); } to { transform: scaleY(1); } }
@media (prefers-reduced-motion: reduce) {
    .stats-overlay, .stats-card, .stats-dia-barra { animation: none; }
}