.tooltip-container {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin-left: 6px;
    cursor: help;
    color: #94a3b8; /* Slate 400 */
    vertical-align: middle;
}

.tooltip-container:hover {
    color: #475569; /* Slate 600 */
}

.tooltip-text {
    visibility: hidden;
    width: 220px;
    background-color: #1e293b; /* Slate 800 */
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px 12px;
    position: absolute;
    z-index: 100;
    bottom: 125%; /* Posiciona arriba del ícono */
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    font-size: 11px;
    line-height: 1.4;
    font-weight: normal;
    pointer-events: none;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    text-transform: none; /* Asegura que no se aplique el uppercase heredado */
}

.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #1e293b transparent transparent transparent;
}

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(-2px);
}

/* ── Action icon buttons (table) ────────────────────────────── */
.btn-edit-number {
    transition: color .15s, transform .15s;
}
.btn-edit-number:hover {
    color: #1d4ed8 !important; /* blue-700 */
    transform: scale(1.15);
}

.btn-delete-number {
    transition: color .15s, transform .15s;
}
.btn-delete-number:hover {
    color: #b91c1c !important; /* red-700 */
    transform: scale(1.15);
}