/* =============================================================================
   SIDEBAR ENHANCED — UI/UX, Accessibility, Search improvements
   Complementa map-styles.css sin sobreescribir reglas de layout.
   ============================================================================= */

/* ── Highlight de término buscado ─────────────────────────────────────────── */
.sb-highlight {
    background: #fff176;
    color: #1a1a1a;
    border-radius: 2px;
    padding: 0 1px;
    font-style: normal;
    font-weight: inherit;
}

/* ── Loading indicator de búsqueda ───────────────────────────────────────── */
#search-loading {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 5px 0 2px;
    font-size: 12px;
    color: #667eea;
    font-weight: 600;
}
#search-loading.visible { display: flex; }

/* Spinner SVG animation */
@keyframes sb-spin {
    to { transform: rotate(360deg); }
}
.sb-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid #d0d5dd;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: sb-spin 0.7s linear infinite;
    flex-shrink: 0;
}

/* ── Estado "Sin resultados" ───────────────────────────────────────────────── */
.sb-empty-state {
    padding: 18px 12px;
    text-align: center;
    color: #6b7280;
    font-size: 13px;
    line-height: 1.55;
}
.sb-empty-state .sb-empty-icon {
    font-size: 28px;
    display: block;
    margin-bottom: 8px;
    opacity: 0.7;
}
.sb-empty-state strong {
    color: #374151;
    display: block;
    margin-bottom: 4px;
}

/* ── Estado "Error" ────────────────────────────────────────────────────────── */
.sb-error-state {
    padding: 12px;
    background: #fef2f2;
    border-left: 3px solid #e74c3c;
    border-radius: 0 6px 6px 0;
    font-size: 12px;
    color: #b91c1c;
    line-height: 1.5;
}

/* ── Botón "Mostrar más" (lazy render) ────────────────────────────────────── */
.sb-load-more-btn {
    width: 100%;
    padding: 8px 12px;
    background: #f0f4ff;
    border: 1.5px solid #c7d2fe;
    border-radius: 8px;
    color: #4338ca;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    margin-top: 6px;
    transition: background 0.15s, border-color 0.15s;
    font-family: inherit;
}
.sb-load-more-btn:hover {
    background: #e0e7ff;
    border-color: #818cf8;
}
.sb-load-more-btn:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* ── Foco visible mejorado (keyboard navigation) ──────────────────────────── */

/* Links y botones dentro del sidebar */
#sidebar a:focus-visible,
#sidebar button:focus-visible,
#sidebar input:focus-visible,
#sidebar select:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Items de la lista de resultados */
#lista .negocio:focus,
#lista .negocio:focus-visible,
#lista .marca:focus,
#lista .marca:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 1px;
}

/* Input de búsqueda: foco visible prominente */
#sidebar #busqueda:focus-visible,
#sidebar .sb-search-wrap #busqueda:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.18);
    border-color: #667eea;
}

/* ── Indicador activo en lista de resultados ──────────────────────────────── */
#lista .negocio.sb-item-active,
#lista .marca.sb-item-active {
    border-left: 3px solid #667eea;
    background: #f0f4ff;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.15);
}
#lista .negocio.sb-item-active strong,
#lista .marca.sb-item-active strong {
    color: #4338ca;
}

/* ── Indicador activo en secciones del sidebar ────────────────────────────── */
.sb-section-hdr.open {
    background: #f5f7ff !important;
}
.sb-section-hdr.open .sb-section-hdr-label {
    color: #4338ca;
}

/* ── Tooltips para secciones colapsadas ───────────────────────────────────── */
/* Visible en hover/focus cuando la sección está cerrada */
.sb-section-hdr[data-tooltip]:not(.open) {
    position: relative;
}
.sb-section-hdr[data-tooltip]:not(.open)::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    background: rgba(17, 24, 39, 0.92);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    padding: 5px 9px;
    border-radius: 6px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.18s;
    z-index: 2000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
.sb-section-hdr[data-tooltip]:not(.open):hover::after,
.sb-section-hdr[data-tooltip]:not(.open):focus-visible::after {
    opacity: 1;
}

/* ── Contraste de texto mejorado en el sidebar ────────────────────────────── */
.sb-section-hdr-label {
    color: #374151 !important; /* improved from #556 */
}
.sidebar-card-label {
    color: #6b7280 !important; /* improved from #999 */
}
.section-header {
    color: #6b7280 !important; /* improved from #999 */
}
/* Stats counter: mejor contraste */
#stats .stats-total {
    color: #1e3a5f;
    font-weight: 700;
}
#stats .stats-sep {
    color: #9ca3af;
}
#stats .stats-badge {
    color: #1e40af;
    font-weight: 700;
}

/* ── Items de la lista: mejor accesibilidad ───────────────────────────────── */
#lista .negocio,
#lista .marca {
    /* Asegurar que el cursor y tabindex sean correctos */
    outline: none;
}
#lista .negocio strong,
#lista .marca strong {
    color: #1e293b; /* antes #222 / heredado — mejorado para contraste */
}
#lista .negocio small,
#lista .marca small {
    color: #6b7280; /* antes #aaa — mejora contraste (era ratio ~2.3:1, ahora ~4.7:1) */
}

/* ── Transmisiones: antenna SVG icon color ─────────────────────────────────── */
.tx-antenna-icon {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

/* ── Sidebar scroll smooth ─────────────────────────────────────────────────── */
#sidebar {
    scroll-behavior: smooth;
}

/* ── Search input wrapper ──────────────────────────────────────────────────── */
.sb-search-wrap {
    position: relative;
    margin-bottom: 12px;
}
.sb-search-wrap #busqueda {
    width: 100%;
    padding: 10px 36px 10px 12px; /* right padding for clear btn */
    border: 1px solid #d0d5dd;
    border-radius: 8px;
    font-size: 13px;
    font-family: inherit;
    color: #374151;
    transition: all 0.2s ease;
    box-sizing: border-box;
    margin-bottom: 0; /* reset, margin handled by wrapper */
}
.sb-search-clear {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: #9ca3af;
    font-size: 16px;
    line-height: 1;
    padding: 2px 4px;
    border-radius: 50%;
    transition: color 0.15s, background 0.15s;
    display: none; /* shown via JS when input has value */
    width: 22px;
    height: 22px;
    align-items: center;
    justify-content: center;
    margin: 0;
}
.sb-search-clear:hover {
    color: #374151;
    background: #f1f5f9;
}
.sb-search-clear.visible {
    display: flex;
}

/* ── Mobile sidebar: transition smoother ──────────────────────────────────── */
@media (max-width: 768px) {
    #sidebar {
        transition: transform 0.28s cubic-bezier(.4, 0, .2, 1) !important;
    }
}